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Home My WebLink About7B WHPP Update Pt 2 Public Hearing Report Phone 952.447.9800 / Fax 952.447.4245 / www.cityofpriorlake.com 4646 Dakota Street SE Prior Lake, MN 55372 CITY COUNCIL AGENDA REPORT MEETING DATE: NOVEMBER 6, 2017 AGENDA #: 7B PREPARED BY: JASON WEDEL, PUBLIC WORKS DIRECTOR/CITY ENGINEER BRIAN WELCH, INFORMATION SYSTEMS COORDINATOR PRESENTED BY: JASON WEDEL AGENDA ITEM: PUBLIC HEARING ON PART 2 OF THE CITY OF PRIOR LAKE’S WELLHEAD PROTECTION PLAN UPDATE DISCUSSION: Introduction The purpose of the agenda item is for the City Council to hold a public hearing and accept comments on Part 2 of the Wellhead Protection Plan Update. History The State of Minnesota Department of Health (MDH) oversees and enforces Minnesota Rules applying to public water supplies. The rules require cities that use groundwater to develop a Wellhead Protection Plan (WHPP) and to update it every 10 years. The WHPP uses well pumping data and groundwater modeling to identify areas around the City’s drinking water wells that may be vulnerable to infiltration of contaminants into the city water supply. It catalogs land use and practices that may lead to contamination. Completion of the update makes the City eligible for MDH grants to facilitate the removal or phase-out of potential contaminants in the Wellhead Protection Zone. The City contracted with Barr Engineering to complete the City’s original WHPP ten years ago. The completed update to the WHPP is due to the MDH December 12, 2017. Part 1 of the update is a technical report that summarized groundwater conditions and possible future impacts on the aquifer via water level logs from existing wells and computer modeling of the aquifer. Part 1 of the update was completed by Barr Engineering and submitted to and approved by MDH in late 2016. Part 2 of the update is the implementation plan to identify potential contamination risks within the Wellhead Protection Zone that was defined during Part 1. Familiarity with the modeling results and groundwater conditions facilitates the development of the implementation plan. Current Circumstances Barr Engineering, Inc. was contracted by the City to complete the required elements of Part 2 of the WHPP update. The draft of Part 2 was completed in August 2017 and sent to relevant local government units for the required 60-day comment period. No comments have been received to date. The MDH requires the City to hold a public hearing to review the result of Part 2 2 of the WHPP. Upon completion of the public hearing and MDH approval of Part 2, the City Council will be asked to adopt the updated WHPP. ISSUES: The City has not received comments from local units of government as of October 30, 2017. The update is required to be submitted to the MDH by December 12, 2017. FINANCIAL IMPACT: Part 2 of the WHPP update outlines a variety of monitoring and ongoing remediation steps that the City must undertake to ensure safe drinking water from the groundwater wells. This monitoring work also helps the City track any changes to groundwater levels and impacts between local and regional pumping activity (e.g. from neighboring municipalities or commercial/industrial activities). Ongoing monitoring and test sampling of the City’s observation wells is already budgeted at $13,000 for 2018. Sealing and filling private wells and septic systems within the DWSMA remains a priority for the City. Most of these private systems were eliminated with the Welcome Ave. reconstruction in 2012-13, but there are still a few remaining systems. While some private systems will be eliminated through redevelopment, City Staff also looks for state and county grant monies that can be used to incentivize property owners and offset the costs of sealing wells, filling septic systems and connecting to City services. When possible, Staff utilizes existing budget to cover any required matching costs, but may request specific funds through the budget process when the grant application process has sufficient lead time. Itemizing these tasks in the WHPP makes them eligible for funding through different MDH grant programs. ALTERNATIVES: 1. Hold a Public Hearing and receive comments on Part 2 of the Wellhead Protection Plan. 2. Table this item to a certain date in the future. RECOMMENDED MOTION: Alternative #1 Wellhead and Source Water Protection – Part 2: Wellhead Protection Plan Amendment Prepared for August 2017 4300 MarketPointe Drive, Suite 200 Minneapolis, MN 55435 Phone: 952.832.2600 Wellhead and Source Water Protection – Part 2: Wellhead Protection Plan Amendment Prepared for August 2017 P:\Mpls\23 MN\70\23701056 WHPP Amendment\WorkFiles\Part 2 WHPP Amendment\Work Files\DRAFT Prior Lake Part 2 WHPP Amendment.docx i Wellhead and Source Water Protection – Part 2: Wellhead Protection Plan Amendment August 2017 Contents Executive Summary .............................................................................................................................................................................. 1 1.0 Introduction ...................................................................................................................................................................... 3 1.1 Background ....................................................................................................................................................................... 3 1.2 Description of the Public Water Supply System ................................................................................................. 3 1.3 DWSMAs ............................................................................................................................................................................ 4 2.0 Identification and Assessment of Data Elements ............................................................................................... 5 3.0 Inventory of Potential Contaminant Sources ....................................................................................................... 6 3.1 Inventory Process ............................................................................................................................................................ 6 3.2 Inventory Results ............................................................................................................................................................. 7 4.0 Impact of Changes to the Public Water Supply Wells ..................................................................................... 8 4.1 Potential Changes Identified ...................................................................................................................................... 8 4.1.1 Physical Environment ............................................................................................................................................... 8 4.1.2 Land Use ....................................................................................................................................................................... 8 4.1.3 Surface Water .............................................................................................................................................................. 9 4.1.4 Groundwater ............................................................................................................................................................... 9 4.2 Impact of Changes .......................................................................................................................................................10 4.2.1 Water Use ...................................................................................................................................................................10 4.2.2 Influence of Existing Water and Land Government Programs and Regulations ............................11 4.2.3 Administrative, Technical, and Financial Considerations .........................................................................12 5.0 Issues, Problems, and Opportunities ....................................................................................................................13 5.1 Land Use Issues, Problems, and Opportunities ................................................................................................13 5.1.1 Source Water Aquifers...........................................................................................................................................13 5.1.2 Groundwater Quality ..............................................................................................................................................14 5.1.3 DWSMAs .....................................................................................................................................................................14 5.2 Issues, Problems, and Opportunities Disclosed at Public Meetings and in Written Comments ...15 ii 5.3 Issues, Problems, and Opportunities Related to the Data Elements ........................................................15 5.4 Issues, Problems, and Opportunities Related to Local, State, and Federal Programs and Regulations......................................................................................................................................................................15 6.0 Wellhead Protection Goals .......................................................................................................................................17 7.0 Objectives and Plans of Action ................................................................................................................................18 7.1 Establishing Priorities ..................................................................................................................................................18 7.2 Well Management ........................................................................................................................................................19 7.2.1 Distribution of Well Operation and Maintenance Information .............................................................19 7.2.1.1 Source of Action ............................................................................................................................................20 7.2.1.2 Cooperators .....................................................................................................................................................20 7.2.1.3 Time Frame ......................................................................................................................................................20 7.2.1.4 Estimated Cost ................................................................................................................................................20 7.2.1.5 Goals Achieved ...............................................................................................................................................20 7.2.2 Promote the Proper Sealing of Unused, Unmaintained, Damaged, or Abandoned Wells within the DWSMAs .............................................................................................................................................................20 7.2.2.1 Source of Action ............................................................................................................................................20 7.2.2.2 Cooperators .....................................................................................................................................................21 7.2.2.3 Time Frame ......................................................................................................................................................21 7.2.2.4 Estimated Cost ................................................................................................................................................21 7.2.2.5 Goals Achieved ...............................................................................................................................................21 7.2.3 Locate Old Prior Lake Well 2 ...............................................................................................................................21 7.2.3.1 Source of Action ............................................................................................................................................21 7.2.3.2 Cooperators .....................................................................................................................................................21 7.2.3.3 Time Frame ......................................................................................................................................................21 7.2.3.4 Estimated Cost ................................................................................................................................................21 7.2.3.5 Goals Achieved ...............................................................................................................................................22 7.2.4 Identify New High-Capacity Wells Within or Near the DWSMA ..........................................................22 7.2.4.1 Source of Action ............................................................................................................................................22 7.2.4.2 Cooperators .....................................................................................................................................................22 7.2.4.3 Time Frame ......................................................................................................................................................22 7.2.4.4 Estimated Cost ................................................................................................................................................22 7.2.4.5 Goals Achieved ...............................................................................................................................................22 7.3 Potential Contaminant Source Properties...........................................................................................................23 7.3.1 Information for Registered Storage Tank Owners .....................................................................................23 iii 7.3.1.1 Source of Action ............................................................................................................................................23 7.3.1.2 Cooperators .....................................................................................................................................................23 7.3.1.3 Time Frame ......................................................................................................................................................23 7.3.1.4 Estimated Cost ................................................................................................................................................23 7.3.1.5 Goals Achieved ...............................................................................................................................................23 7.3.2 Tracking of Registered Storage Tanks ............................................................................................................24 7.3.2.1 Source of Action ............................................................................................................................................24 7.3.2.2 Cooperators .....................................................................................................................................................24 7.3.2.3 Time Frame ......................................................................................................................................................24 7.3.2.4 Estimated Cost ................................................................................................................................................24 7.3.2.5 Goals Achieved ...............................................................................................................................................24 7.3.3 Information for Chemical Storage and Hazardous Waste Generator Properties ..........................25 7.3.3.1 Source of Action ............................................................................................................................................25 7.3.3.2 Cooperators .....................................................................................................................................................25 7.3.3.3 Time Frame ......................................................................................................................................................25 7.3.3.4 Estimated Cost ................................................................................................................................................25 7.3.3.5 Goals Achieved ...............................................................................................................................................25 7.3.4 Inner Wellhead Management Zone Management .....................................................................................26 7.3.4.1 Source of Action ............................................................................................................................................26 7.3.4.2 Cooperators .....................................................................................................................................................26 7.3.4.3 Time Frame ......................................................................................................................................................26 7.3.4.4 Estimated Cost ................................................................................................................................................26 7.3.4.5 Goals Achieved ...............................................................................................................................................26 7.3.5 Transportation Corridors and Emergency Response ................................................................................26 7.3.5.1 Source of Action ............................................................................................................................................26 7.3.5.2 Cooperators .....................................................................................................................................................26 7.3.5.3 Time Frame ......................................................................................................................................................27 7.3.5.4 Estimated Cost ................................................................................................................................................27 7.3.5.5 Goals Achieved ...............................................................................................................................................27 7.3.6 Subsurface Sewage Treatment Systems .........................................................................................................27 7.3.6.1 Source of Action ............................................................................................................................................27 7.3.6.2 Cooperators .....................................................................................................................................................28 7.3.6.3 Time Frame ......................................................................................................................................................28 7.3.6.4 Estimated Cost ................................................................................................................................................28 iv 7.3.6.5 Goals Achieved ...............................................................................................................................................28 7.4 General Public Education ...........................................................................................................................................28 7.4.1 Wellhead Protection Information .....................................................................................................................28 7.4.1.1 Source of Action ............................................................................................................................................28 7.4.1.2 Cooperators .....................................................................................................................................................28 7.4.1.3 Time Frame ......................................................................................................................................................29 7.4.1.4 Estimated Cost ................................................................................................................................................29 7.4.1.5 Goals Achieved ...............................................................................................................................................29 7.4.2 Drinking Water Quality Report ..........................................................................................................................29 7.4.2.1 Source of Action ............................................................................................................................................29 7.4.2.2 Cooperators .....................................................................................................................................................29 7.4.2.3 Time Frame ......................................................................................................................................................29 7.4.2.4 Estimated Cost ................................................................................................................................................29 7.4.2.5 Goals Achieved ...............................................................................................................................................29 7.4.3 City of Prior Lake Website ....................................................................................................................................30 7.4.3.1 Source of Action ............................................................................................................................................30 7.4.3.2 Cooperators .....................................................................................................................................................30 7.4.3.3 Time Frame ......................................................................................................................................................30 7.4.3.4 Estimated Cost ................................................................................................................................................30 7.4.3.5 Goals Achieved ...............................................................................................................................................30 7.4.4 Inclusion of Wellhead and Source Water Protection in the Planning Process Within the DWSMAs .....................................................................................................................................................................30 7.4.4.1 Source of Action ............................................................................................................................................30 7.4.4.2 Cooperators .....................................................................................................................................................31 7.4.4.3 Time Frame ......................................................................................................................................................31 7.4.4.4 Estimated Cost ................................................................................................................................................31 7.4.4.5 Goals Achieved ...............................................................................................................................................31 7.5 Data Collection ..............................................................................................................................................................31 7.5.1 Monitoring Static and Pumping Levels in Municipal Wells ....................................................................31 7.5.1.1 Source of Action ............................................................................................................................................31 7.5.1.2 Cooperators .....................................................................................................................................................31 7.5.1.3 Time Frame ......................................................................................................................................................31 7.5.1.4 Estimated Cost ................................................................................................................................................32 7.5.1.5 Goals Achieved ...............................................................................................................................................32 7.5.2 Water Level Monitoring in City Observation Wells ....................................................................................32 v 7.5.2.1 Source of Action ............................................................................................................................................32 7.5.2.2 Cooperators .....................................................................................................................................................32 7.5.2.3 Time Frame ......................................................................................................................................................32 7.5.2.4 Estimated Cost ................................................................................................................................................32 7.5.2.5 Goals Achieved ...............................................................................................................................................33 7.5.3 Other Geologic and Hydrogeologic Data Collection ................................................................................33 7.5.3.1 Source of Action ............................................................................................................................................33 7.5.3.2 Cooperators .....................................................................................................................................................33 7.5.3.3 Time Frame ......................................................................................................................................................33 7.5.3.4 Estimated Cost ................................................................................................................................................33 7.5.3.5 Goals Achieved ...............................................................................................................................................33 7.5.4 Updating of the Groundwater Model Used in the WHPA Delineations ............................................33 7.5.4.1 Source of Action ............................................................................................................................................34 7.5.4.2 Cooperators .....................................................................................................................................................34 7.5.4.3 Time Frame ......................................................................................................................................................34 7.5.4.4 Estimated Cost ................................................................................................................................................34 7.5.4.5 Goals Achieved ...............................................................................................................................................34 7.5.5 Potential Contaminant Source Database .......................................................................................................34 7.5.5.1 Source of Action ............................................................................................................................................34 7.5.5.2 Cooperators .....................................................................................................................................................34 7.5.5.3 Time Frame ......................................................................................................................................................34 7.5.5.4 Estimated Cost ................................................................................................................................................35 7.5.5.5 Goals Achieved ...............................................................................................................................................35 7.5.6 Potential Contaminant Source Verification ...................................................................................................35 7.5.6.1 Source of Action ............................................................................................................................................35 7.5.6.2 Cooperators .....................................................................................................................................................35 7.5.6.3 Time Frame ......................................................................................................................................................35 7.5.6.4 Estimated Cost ................................................................................................................................................35 7.5.6.5 Goals Achieved ...............................................................................................................................................35 7.5.7 Tritium Sampling .....................................................................................................................................................36 7.5.7.1 Source of Action ............................................................................................................................................36 7.5.7.2 Cooperators .....................................................................................................................................................36 7.5.7.3 Time Frame ......................................................................................................................................................36 7.5.7.4 Estimated Cost ................................................................................................................................................36 vi 7.5.7.5 Goals Achieved ...............................................................................................................................................36 8.0 Evaluation Program ......................................................................................................................................................38 9.0 Alternative Water Supply Contingency Strategy ..............................................................................................39 10.0 References .......................................................................................................................................................................40 vii List of Tables Table 1 Municipal Well Construction Summary Table 2 Annual Volume of Water Pumped Table 3 Summary of Potential Sources of Contaminants and Assigned Management Priority Table 4 High Capacity Wells within One Mile of the DWSMAs List of Figures Figure 1 Municipal Wells, DWSMAs, and Aquifer Vulnerability Figure 2 Current Land Use Figure 3 Planned Future Land Use Figure 4 High Capacity Wells within One Mile of the DWSMAs List of Appendices Appendix A MDH Well Records Appendix B Part 1 Wellhead Protection Plan Amendment Appendix C Data Elements Assessment Appendix D Water Quality Information Appendix E Wellhead Protection Program Evaluation Template Appendix F Water Emergency and Conservation Plan viii Public Water Supply Profile The following persons are the contacts for the Prior Lake Wellhead Protection Plan: Public Water Supply Contact Brian Welch Information Systems Coordinator City of Prior Lake 4646 Dakota Street Southeast Prior Lake, Minnesota 55372 Telephone: 952-447-9855 email: bwelch@cityofpriorlake.com Wellhead Protection Manager Jason Wedel Public Works Director City of Prior Lake 4646 Dakota Street Southeast Prior Lake, Minnesota 55372 Telephone: (952) 447-9890 email: jwedel@cityofpriorlake.com Wellhead Protection Consultant John Greer, PG Barr Engineering Company 4300 MarketPointe Drive Suite 200 Minneapolis, Minnesota 55435 Telephone: 952-832-2600 Fax: 952-832-2601 email: jgreer@barr.com General Information UNIQUE WELL NUMBER(S) 207308, 110452, 420954, 603083, 655913, 686263, 686264 SIZE OF POPULATION SERVED 25,049 (2015 Metropolitan Council estimate) COUNTY Scott ix Documentation List Step Date Performed Scoping Meeting 2 Held (4720.5340, subp. 1) December 14, 2016 Scoping 2 Decision Notice Received (4720.5340, subp. 2) January 26, 2016 Remaining Portion of Plan Submitted to Local Units of Government (LUGs) (4720.5350) September XX, 2017 Review Received From Local Units of Government (4720.5350, subp. 2) September XX, 2017 to November XX, 2017 Review Comments Considered (4720.5350, subp. 3) September XX, 2017 to November XX, 2017 Public Hearing Conducted (4720.5350, subp.4) November XX, 2017 Remaining Portion WHP Plan Submitted (4720.5360, subp. 1) December XX, 2017 Final WHP Plan Review Received (4720.5360, subp. 4) x Certification I hereby certify that this plan, document, or report was prepared by me or under my direct supervision and that I am a duly Licensed Professional Geologist under the laws of the state of Minnesota. John C. Greer PG #: Date xi Acronyms Acronym Description DWSMA Drinking Water Supply Management Area MGD Million Gallons per Day MGY Million Gallons per Year MDH Minnesota Department of Health MDNR Minnesota Department of Natural Resources MGS Minnesota Geological Survey MnOPS Minnesota Office of Pipeline Safety MPCA Minnesota Pollution Control Agency PCSI Potential Contaminant Source Inventory WHPA Wellhead Protection Area WHPP Wellhead Protection Plan 1 1 Executive Summary The Wellhead and Source Water Protection Plan (the Plan) for the City of Prior Lake (the City) addresses the seven municipal water supply wells operated by the City. The City’s original Wellhead Protection Plan was approved by the Minnesota Department of Health in 2008. This Plan amendment was prepared in accordance with the applicable portions of the State of Minnesota Wellhead Protection Rules (Minnesota Rules 4720.5100 through 4720.5590) due to the age of the Plan. The City’s municipal water supply system includes seven primary wells: Wells 3, 4, 5, 6, 7, 8, and 9. Wells 3, 4, 5, 6, and 8 pump from the Jordan Sandstone aquifer. Wells 7 and 9 pump from the Tunnel City- Wonewoc aquifer. In accordance with Minnesota Rules 4720.5550, Prior Lake Wells 6, 7, and 9 are classified as not vulnerable to contamination from the surface while wells 3, 4, 5, and 8 are classified as vulnerable to contamination. This Plan amendment consists of two parts. In Part 1 of the Plan amendment, wellhead protection areas (WHPAs) for the City’s water supply wells were delineated as were the associated drinking water supply management areas (DWSMAs). Two DWSMAs were delineated for Prior Lake. The West DWSMA encompasses the WHPA for Well 6. The East DWSMA was delineated around the other six Prior Lake municipal wells. The West DWSMA lies entirely within Prior Lake’s city limits, while the East DWSMA extends into Spring Lake and Credit River Townships. Geologic conditions in and around the City’s DWSMAs result in the uppermost source water aquifer vulnerability being classified as Low in 100% of the West DWSMA. In the East DWSMA the aquifer vulnerability is classified as High in approximately 15 percent of the area within the DWSMA with the aquifer vulnerability classified as Moderate in approximately 16 percent of the area and as Low in approximately 68 percent of the area. This document comprises Part 2 of the Plan amendment and includes the following information:  A review of data elements identified by the Minnesota Department of Health as applicable to the DWSMAs.  Results of an inventory of potential contaminant sources within the DWSMAs.  A review of changes, issues, problems, and opportunities related to the public water supply and the identified potential contaminant sources.  A discussion of potential contaminant source management strategies and the goals, objectives, and action plans associated with these management strategies.  A summary of the Wellhead and Source Water Protection evaluation program and Prior Lake’s alternative water supply contingency strategy. The types of potential contaminant sources that must be inventoried depends on the aquifer vulnerability classification within the DWSMAs. Potential contaminant sources identified in the DWSMAs include non- municipal wells, potential Class V well locations, storage tanks, hazardous waste generators, chemical storage, SSTS, and a cemetery. 2 2 The goals and objectives of this WHPP will focus on reducing the potential contaminant pathways to the source water aquifers that may be provided by private wells, and educating property owners and water supply users to ensure proper management of the portions of the DWSMAs. The following goals have been identified for implementation of this WHPP:  The City will work to maintain or improve the current level of water quality so that the municipal water supply will continue to meet or exceed all applicable state and federal water quality standards.  Work with other Spring Lake and Credit River Townships to protect the source water aquifers  The City will provide information and promote activities that protect the source water aquifer that provides water to the municipal system. This will include increasing public awareness of the Wellhead and Source Water Protection Program and groundwater-related issues, and management of the identified potential contaminant sources within the DWSMAs.  The City will continue to collect data to support future wellhead and source water protection efforts. Actions identified to accomplish these goals include the following:  Wells o Promoting proper management of existing active wells in the DWSMAs o Encouraging the proper sealing of all unused wells within the DWSMAs o Locating old Prior Lake Well 2 o Maintaining up to date information on high capacity wells in/near the DWSMAs  Potential contaminant source properties o Encouraging proper handling of chemicals/wastes o Encouraging proper operation and maintenance of storage tanks o Notifying property owners that their properties lie within the DWSMAs o Periodically obtaining updated information on potential contaminant sources in the DWSMAs from the regulating agencies to maintain an up-to-date potential contaminant source database for the DWSMAs and allow timely recognition of potential issues that could affect the Prior Lake municipal water supply or DWSMA.  Public education o Distribution of the Prior Lake Annual Water Quality Report for the water supply system, o Posting Wellhead Protection Program information on the City of Prior Lake website http://www.cityofpriorlake.com/index.php o Inclusion of wellhead and source water protection in the City’s planning process  Continued data collection o Recording static and pumping water levels in the Prior Lake municipal wells o Recording water levels in the City’s observation well network o Collection of additional local geologic and hydrogeologic data as it becomes available from public sources or from City-sponsored projects. 3 3 1.0 Introduction 1.1 Background The City of Prior Lake (City) currently has seven municipal water supply wells: Wells 3, 4, 5, 6, 7, 8, and 9. are primary water supply wells. In total, these wells pump from two different aquifers: the Jordan Sandstone aquifer and the Tunnel City-Wonewoc aquifer. Minnesota unique well number along with well construction, status, aquifer, and well vulnerability classification for each of Prior Lake’s municipal water supply wells is presented in Table 1. Well locations and Drinking Water Supply Management Area (DWSMA) locations are shown on Figure 1. Minnesota Department of Health (MDH) well records for all the Prior Lake municipal wells are presented in Appendix A. The previous Prior Lake Wellhead Protection Plan (WHPP) Parts 1 and 2 were prepared in 2005-2007. The MDH issued final approval of the previous Part 2 WHPP in March 2008. In accordance with the Minnesota Wellhead Protection Rules (Minnesota Rules 4720.5100 through 4720.5590), amendment of the City’s WHPP was initiated based on the age of the Plan. The Part 1 WHPP amendment (Barr, 2016) was approved by the Minnesota Department of Health (MDH) in September 2016 (MDH, 2016a). A public information meeting on the Part 1 WHPP amendment was held on October 27, 2016. In the Part 1 WHPP amendment, two separate DWSMAs were delineated for Prior Lake that encompass the wellhead protection areas (WHPAs) delineated for the Prior Lake water supply wells. In addition to the delineation of the WHPAs and the DWSMAs, Part 1 of the WHPP amendment includes an assessment of the vulnerability to contamination of the Prior Lake municipal wells and the source water aquifers in the associated DWSMAs. In accordance with Minnesota Rules 4720.5550, Wells 6, 7, 8, and 9 are classified as not vulnerable to contamination from the surface and Wells 3, 4, and 5 are classified as vulnerable to contamination (see Table 1 and Appendix B). In the Part 1 amendment report, the vulnerability to contamination of the uppermost source water aquifers within the DWSMAs was identified as ranging from Low to High (Barr, 2016). Figure 1 shows the aquifer vulnerability zones in the Prior Lake DWSMAs. The Prior Lake Part 1 WHPP amendment is presented in Appendix B. 1.2 Description of the Public Water Supply System Prior Lake is located in Scott County. The City currently has seven primary water supply wells in the municipal water supply and distribution system for Public Water Supply #1700007. Locations of the wells are shown on Figure 1 and general construction details for the Prior Lake municipal wells are summarized in Table 1. Copies of the MDH well records for the Prior Lake municipal wells are presented in Appendix A. The 2010 census counted 22,796 people in Prior Lake. The Metropolitan Council estimated the 2015 population of Prior Lake to be 25,049. The Metropolitan Council projects Prior Lake’ population to reach 27,500 in 2020 and 33,900 in 2030 (Metropolitan Council, 2015a). 4 4 The Metropolitan Council (2015a) projects that the City’s daily average water demand in 2030 will be approximately 3.61 MGD (approximately 2,500 gpm). Current daily water demand (based on the period 2010-2015) averages approximately 2.0 MGD. Maximum day demand (the largest daily water use in a given year) ranged from approximately 3.9 MGD to approximately 6.4 MGD in the period 2010-2015. Prior Lake’ permitted annual appropriation volume is 900 million gallons per year (MGY). The permitted instantaneous total pumping rate for the Prior Lake system is 6,750 gpm. The City has operated a water treatment facility since 2009. The facility treats water from the City’s wells to remove iron and manganese and add fluoride and chlorine (a disinfectant) to the water before it enters the distribution system. The facility can treat up to 7.5 MGD. Prior Lake currently has two elevated water storage towers with a combined capacity of 1.75 million gallons (MG). In addition, the clearwell/reservoir at the water treatment facility can store an additional 1.5 MG. As discussed by Barr (2016), pumping information from the City for the period 2010 through 2014 and water demand projections were used to develop projected pumping rates for use in delineating the WHPAs. Annual volume of water pumped by each of th e City’s municipal water supply wells during the period 2010 through 2014 is shown in Table 2. 1.3 DWSMAs The DWSMAs delineated in the Part 1 WHPP amendment encompass the 10-year groundwater time of travel WHPAs around the City’s wells. As shown on Figure 1, the West DWSMA was delineated around Prior Lake Well 6. The East DWSMA encompasses the WHPAs for Wells 3, 4, 5, 7, 8, and 9. The West DWSMA is found in Township 115N, Range 22W, Sections 27, 28, 33, and 34. The East DWSMA is found in Township 114N, Range 21W, Sections 6, 7, and 18; Township 114N Range 22W, Sections 1, 2, 12, and 13; and Township 115N, Range 22W, Section 22. As shown on Figure 1, the West DWSMA is contained entirely within the Prior Lake city limits while the East DWSMA extends into Spring Lake and Credit River Townships. In the Part 1 amendment report, Aquifer vulnerability is classified as Low in 100 percent of the area within the West DWSMA. In the East DWSMA the aquifer vulnerability is classified as High in approximately 15 percent of the area within the DWSMA with the aquifer vulnerability classified as Moderate in approximately 16 percent of the area and as Low in approximately 68 percent of the area. 5 5 2.0 Identification and Assessment of Data Elements The Minnesota Wellhead Protection Rules specify data elements that must be addressed in wellhead protection plans. For the WHPP amendment, MDH staff met with City staff on two occasions to discuss the data elements that are specified in the Minnesota Rules 4720.5400. Results of these scoping meetings were transmitted to the City via two Scoping Decisions dated March 5, 2015 (MDH, 2015) and January 24, 2017 (MDH, 2017). The first Scoping Meeting was held on February 26, 2015. At this meeting, the data elements related to delineation of the WHPAs and DWSMAs and assessment of well and aquifer vulnerability were discussed. The second Scoping Meeting was held on December 14, 2016. At this meeting, the data elements required to support development of Part 2 of the WHPP amendment (this document) which identifies potential contaminant sources within the DWSMAs and identifies management strategies to help safeguard the municipal water supply from identified potential contaminants were discussed. An assessment of these data elements, as required by the Minnesota Wellhead Protection Rules, is presented in Appendix C. 6 6 3.0 Inventory of Potential Contaminant Sources In Part 1 of this WHPP amendment, WHPAs and the DWSMAs were delineated. The DWSMAs encompass the 10-year groundwater time of travel WHPAs around the City’s wells (Barr, 2016).The West DWSMA encompasses the WHPA for Well 6. The East DWSMA encompasses the WHPAs for Wells 3, 4, 5, 7, 8, and 9. The West DWSMA is contained entirely within the Prior Lake city limits while the East DWSMA extends into Spring Lake and Credit River townships (Figure 1). As shown in Appendix C, the current land use (i.e., year 2010 data from the Metropolitan Council) numerous land uses are found within the DWSMAs. . Land uses in the DWSMAs that cover 1% or more of the area in the DWSMAs include Residential (single family), Parks/Recreational/Preserve, Undeveloped, Open Water, Institutional, Industrial and Utility, Golf Course, and Retail and Other Commercial. Per the January 24, 2017 Scoping 2 Decision Notice, the City performed a Potential Contaminant Source Inventory (PCSI) within the DWSMAs. 3.1 Inventory Process At Scoping Meeting No. 2, the types of potential contaminant sources that must be inventoried in the Prior Lake DWSMAs Area were discussed. As discussed in Appendix C, sources of data accessed for the potential contaminant source inventory include Minnesota Department of Health (MDH), Minnesota Department of Natural Resources (MDNR), Minnesota Department of Public Safety (DPS), Minnesota Geological Survey (MGS), Minnesota Office of Pipeline Safety (MnOPS), Scott County, Minnesota Pollution Control Agency (MPCA), and U.S. Environmental Protection Agency (EPA) databases. Aquifer vulnerability in the Prior Lake DWSMAs varies (Figure 1). The aquifer vulnerability in the DWSMAs includes the following classifications: Low, Moderate, and High. The aquifer vulnerability within the entire West DWSMA around Prior Lake Well 6 is classified as Low. In the East DWSMA, the aquifer vulnerability is classified as High in approximately 15 percent of the area within the DWSMA with the aquifer vulnerability classified as Moderate in approximately 16 percent of the area and as Low in approximately 68 percent of the area. The potential contaminant source types that must be inventoried vary based on the aquifer vulnerability classification. In the areas where aquifer vulnerability is classified as High the types of potential contaminant point sources inventoried include chemical storage sites, potential Class V well locations (Class V wells are wells or other structures that facilitate injection of wastes into the subsurface), hazardous waste generators, subsurface sewage treatment systems (SSTS; a.k.a., septic systems), storage tank sites (registered storage tanks and leaking underground storage tank sites), cemeteries, pipeline facilities, and wells. It should be noted that no dump sites or spill sites not associated with leaking underground tanks (LUSTs) were identified in portions of the East DWSMA in which the aquifer vulnerability is classified as High. In areas where the aquifer vulnerability is classified as Moderate the types of potential contaminant point sources identified include a potential Class V well location (per the U.S. EPA, Class V wells include cesspools, large-scale septic systems serving more than 20 people, or 7 7 potential automotive maintenance waste disposal wells/pits), storage tank sites, and wells. In areas where the aquifer vulnerability is classified as Low the types of potential contaminant point sources identified include potential Class V well locations, and wells. The first step in the inventory was to determine if there were any potential contaminant sources in the Inner Wellhead Management Zone (IWMZ) or the Emergency Response Zone (ERZ) around each of the Prior Lake wells. The IWMZ is defined as the area within a 200 foot radius of each municipal well. The most recent IWMZ inventory for each of the Prior Lake municipal wells is presented in Appendix C. The ERZ is defined as the area within which the travel time of groundwater to a municipal well is one year or less. The inventory was then expanded out to the boundaries of the DWSMAs. As shown in Table 3, potential contaminant sources were assigned a priority based on the relative risk they pose to the public water supply. The evaluation of risk related to a potential contaminant source type is based on the locations of potential contaminant sources of that type and the aquifer vulnerability classification. Higher priority was assigned to those potential contaminant sources that would pose the highest risk to the municipal water supply should a contaminant release occur. 3.2 Inventory Results A more detailed discussion of the potential contaminant sources within the DWSMAs is presented in Appendix C. The inventory results are summarized in Table 3. The Wellhead Protection rules require that at least 25 locations of each type of potential contaminant source identified during the PCSI be verified during preparation of the plan. The rules also require that if there are fewer than 25 of a particular potential contaminant source type that all locations of that type be verified. For WHPP amendments, MDH policy modifies this requirement by applying the “25 rule” only to those portions of the new DWSMA that are outside the limits of the original DWSMA. In addition, MDH requires that potential contaminant source locations identified within the original DWSMA limits during preparation of the original plan be verified prior to submittal of the Part 2 WHPP amendment to MDH for approval. During the preparation of this Plan amendment, all identified potential contaminant source locations within the old Prior Lake DWSMA limits were verified. Furthermore, all potential contaminant source locations identified in the areas between the boundaries of the old and new Prior Lake DWSMAs were verified during preparation of this Plan amendment. Verification procedures used included matching mapped locations with addresses on MDH Well Records or State/County-issued permits or in County/State/Federal databases, published business addresses, local knowledge of City staff, and property parcel addresses (note that not all verification procedures were used for each type of potential contaminant source). Verified locations are identified in the tables in Appendix C. New information developed on contaminant sources in the future will be verified as they are discovered as part of the WHPP implementation. 8 8 4.0 Impact of Changes to the Public Water Supply Wells In accordance with the requirements of Minnesota Rules 4720.5220, anticipated changes in the physical environment, land use, surface water, and groundwater in the DWSMAs within the next ten years and the impact of these changes on the source water aquifers are discussed in this section. 4.1 Potential Changes Identified 4.1.1 Physical Environment Currently, significant or large-scale changes in the physical environment that might affect the DWSMAs, are not anticipated in the next ten years. Any changes are expected to be the result of development/redevelopment of properties or localized infrastructure changes. Such changes would not be expected to significantly affect the source water aquifers. Any minor changes to the physical environment will likely not affect the management strategies for the Prior Lake DWSMAs presented in this WHPP. As discussed below in Section 4.1.4, the City does not anticipate it will be necessary to install new wells to meet projected future water demand. The West DWSMA is contained entirely within the Prior Lake city limits while the East DWSMA extends into Spring Lake and Credit River Townships. The City of Prior Lake plans to work with Credit River and Spring Lake Townships to manage the portions of the East DWSMA that fall within these townships. 4.1.2 Land Use The Metropolitan Council’s 2015 System Statement indicates that Prior Lake has the planning designation Emerging Suburban Edge (Metropolitan Council, 2015b). Per the System Statement, “Emerging Suburban Edge communities include cities, townships and portions of both that are in the early stages of transitioning into urbanized levels of development.” A land use map for the year 2010 and a projected year 2030 land use map are shown on Figures 2 and 3, respectively. Current land uses in the Prior Lake DWSMAs include Residential of various types, Park/Recreational/Preserve, Open Water, Institutional, Agricultural, Industrial and Utility, Golf Course, and Retail and Other Commercial. Approximately 21 percent of the land in the DWSMAs is currently undeveloped or identified as an agricultural use (Figure 2). Projected land use in Prior Lake in 2030 is expected to be consistent with the City’s current growth planning. As shown on Figure 3, approximately 9 percent of the land in the current DWSMAs has a projected 2030 land use of Agricultural or Vacant/Unknown. The remainder of the land is projected to be developed. The land uses anticipated during the next ten years within the DWSMAs are currently present in the areas covered by this WHPP. As a result, adjustments in the land uses within the DWSMAs such as those projected for the year 2030 will be adequately addressed by the management strategies put forth in this WHPP. 9 9 4.1.3 Surface Water There are surface water bodies and wetlands within the Prior Lake DWSMAs. The City’s Local Surface Water Management Plan, City ordinances, and zoning address these surface water bodies and wetlands. Prior Lake’s management of surface water bodies and wetlands is not expected to adversely affect the management strategies for the DWSMAs. Rather, the City’s management of surface water bodies and wetlands is intended to preserve the quality of these resources and, therefore, is also consistent with the objectives of this Plan. The City is not aware of any plans to alter the course or location of any surface water bodies currently present within the DWSMAs in the next ten years. 4.1.4 Groundwater As the population of Prior Lake grows, water demand in the City is expected to grow. The City began purchasing water from the Shakopee Mdewakanton Sioux Community (SMSC) in 2014. At the time this WHPP amendment was prepared, the City was working to finalize an agreement with the SMSC to continue the water purchase into the future. Continuing purchase of water from the SMSC would likely eliminate the potential for the City to need to construct water supply infrastructure (new wells, treatment facility, or storage facilities) during the life of this Plan amendment. City staff inspect the municipal wells regularly. The MDH inspects all wells annually. This annual inspection includes sampling of the wells to ensure they comply with applicable regulatory standards. In addition, Prior Lake uses a SCADA system to measure the volume of water pumped from a well, the instantaneous pumping rate for each well, and the water level (static or pumping) in each well. The City has an ongoing program to collect groundwater level data using transducers installed in seven City-owned monitoring wells. The monitoring wells and the aquifers monitored are as follows:  Unique No. 745555 (Quaternary sand and gravel aquifer)  Unique No. 745556 (Jordan aquifer)  Unique No. 749808 (Quaternary sand and gravel aquifer)  Unique No. 749809 (Quaternary sand and gravel aquifer)  Unique No. 782131 (Jordan Sandstone aquifer) Data from the wells shows that piezometric levels in the aquifers fluctuate seasonally but do not indicate any long term, downward trend over the monitoring period. In addition, the City also has an ongoing program to collect groundwater quality data from two Jordan aquifer monitoring wells (Unique Nos. 782130 and 782131) located near Wells 3, 4, and 5. Data for samples from these monitoring wells do not indicate any water quality concerns. The City supports water conservation. The City’s water conservation program includes a tiered water rate structure, odd-even day sprinkling restrictions, and time of day watering restrictions (see Part 7 Section 705.701 of the City Code). The sprinkling restrictions are in place for the period May 1 through October 1. Part 7, Section 705.702 of the City Code identifies exemptions from the water use restrictions. Under Part 10 10 7, Section 705.703 of the City Code the City Manager Council or designee can put in place emergency water conservation measures during a water emergency. These measures may include, but are not limited to, total prohibition of watering, sprinkling, or irrigation. In the next ten years it is possible that new business or industrial developments in or near the Prior Lake DWSMAs may seek to construct privately-owned high capacity wells completed in one of the City’s source water aquifers. In addition, it is possible that the SMSC may construct additional new water supply wells in the area. Such wells could potentially affect the DWSMA boundaries, depending on their location and pumping rate. At the time this Plan was prepared, the City was not aware of any proposed new high capacity wells within or near the DWSMAs. Available information from the Minnesota Department of Natural Resources’ (MDNR) Minnesota Permitting and Reporting System (MPARS) database and the CWI was reviewed to identify active high capacity wells within a zone that includes the DWSMAs and extends one mile beyond the boundaries of the DWSMAs. High capacity wells outside of the DWSMAs were identified because changes in operation of these wells could, potentially, affect the DWSMA boundaries. The available information indicates there are five active high capacity well within the zone of interest in addition to the seven Prior Lake municipal water supply wells. Of these five non-Prior Lake wells, three are used for public water supply, one is used for golf course irrigation, and one is identified as being used for lake level maintenance. The high capacity wells in the DWSMAs and within one mile of the boundaries of the DWSMAs are shown on Figure 4 and summarized in Table 4. Additional information on these wells can be found in Appendix C. 4.2 Impact of Changes 4.2.1 Water Use The City’s average day water demand in 2030 is projected to be approximately 3.61 MGD (Metropolitan Council, 2015a) or approximately 2,500 gpm. For the period 2010–2015, average daily from the Prior Lake water supply wells averaged about 2.0 MGD. Prior Lake’s permitted total appropriation volume is 900 MGY. The permitted instantaneous total pumping rate for the Prior Lake system is 6,750 gpm. In the City’s 2030 Comprehensive Plan (Prior Lake, 2005) a peaking factor of 2.75 is assumed for future maximum water demand projections. Applying this peaking factor to the 2030 average day demand of 3.61 MGD discussed the projected 2030 maximum day demand would be approximately 9.9 MGD (approximately 6,900 gpm). For the period 2010-2015, the City’s maximum day water demand ranged from approximately 3.9 to 6.4 MGD. During this same period, the City’s average day water demand ranged from approximately 1.4 to 2.5 MGD. The City’s water distribution system is currently supplied with water from seven wells with a total permitted operating capacity of 6,750 gpm 9.72 MGD). Based on current projections and the anticipated purchase of water from the SMSC, the City does not anticipate the need to install additional wells to meet future water demand. If it would become necessary to install additional wells in the future, the City would have to review and, likely, update their WHPAs and DWSMAs to take into account the effects of pumping from the new wells. Commented [JG1]: City reviewers please confirm or modify this statement Commented [JG2]: NOTE TO CITY REVIEWERS: If the City has developed an alternate projection of 2030 maximum day demand this can be modified. 11 11 The placement of an additional high capacity well in or near the DWSMAs or significant changes in current groundwater appropriations by existing wells could have an impact on the source water aquifers and local water supplies. Such changes could also affect the WHPAs and DWSMAs identified for the existing City of Prior Lake wells or change the static water levels in the wells. The City will work with the MDH Source Water Protection Unit and the MDNR to identify any new proposed high capacity wells in the vicinity of the Prior Lake DWSMAs and provide interaction, to the extent practicable, with the proposed well owner to minimize potential problems. To conserve valuable water resources and to mitigate, to the extent possible, drought impacts, the City limits use of water from the municipal water supply system for lawn and garden sprinkling and irrigation to an odd-even schedule corresponding to property address from May 1 through October 1. In addition, the City Code allows additional water use restrictions to be put in place during periods of critical shortages. 4.2.2 Influence of Existing Water and Land Government Programs and Regulations As noted above, the City has controls on outdoor water usage and the ability to impose further restrictions on water use during periods of critical water shortages to conserve valuable water resources and address drought impacts. The City also provides water conservation information on their website and has a tiered billing structure for water use. These programs are designed to assist residents and businesses with water conservation strategies through incentives and educational information. The City has a storm water management program. The goals of the program include maintaining or improving water quality in surface water bodies in the City. A storm water pollution prevention plan was developed as part of Prior Lake’ storm water management program. The City believes that the current program is sufficient to meet the objectives of this WHPP. County and city ordinances, the MDNR Division of Waters’ appropriations permitting program, the MPCA’s storage tank permitting program and hazardous waste generator permitting program, the State of Minnesota Well Management and Drinking Water Supply Programs, State SSTS rules, State rules regarding chemical handling and storage, and the U.S. EPA’s rules regarding Class V wells will be relied upon for assistance in regulating the installation of new wells, the operation of wells, water appropriation permitting, the proper sealing of unused wells, proper operation and maintenance of SSTS, proper maintenance and operation of storage tanks, proper storage of chemicals, proper handling of hazardous wastes, proper operation of the cemetery in the East DWSMA, and addressing Class V wells. In addition, Prior Lake is aware of and supports the cost share and incentives program offered by the Scott Watershed Management Organization that covers sealing of unused private wells. The City believes that the current level of regulations and oversight by various governmental entities are adequate to address these issues. Land use control and land disturbing activities outside of the City of Prior Lake will be governed by the local unit of government with jurisdiction in a particular area. This WHPP has been developed to protect the interests of the City of Prior Lake and, to the extent practicable, to have no adverse effect on the plans and strategies developed for adjacent areas. 12 12 The City of Prior Lake will continue to rely on Federal, State, County, and local agencies and their regulations and programs to handle issues outside of the City’s boundaries regarding water conservation, water appropriations, and well drilling. City staff will look to the MDH for continued regulation of the installation of wells and proper sealing and abandonment of old wells. In addition, the City recognizes that the MDNR plays a role in the approval of applications for construction of new high capacity wells as well as administering water appropriations. The programs identified above have proven to be effective. City staff will cooperate with the appropriate agencies, to the extent practicable, if issues arise in the future. 4.2.3 Administrative, Technical, and Financial Considerations The City expects to have adequate resources available over a multi-year period to manage their source water aquifers within their DWSMAs. Funds to support ongoing wellhead and source water protection efforts will come from the City’s water utilities budget. Wellhead and so urce water protection activities will be evaluated periodically per MDH requirements and any changes in the focus of the tasks will also be evaluated to determine if additional funding will be necessary to accommodate the changes. When appropriate and to assist in funding of activities, the City may apply for grants from the MDH Source Water Protection Grant Program to fund implementation of management activities described later in this Plan. For this WHPP to be effective, the City will need to keep the public aware of the issues affecting the public water supply. Therefore, the wellhead and source water protection actions described later in this Plan will include public education. Routine administrative duties will be directed or performed by the Wellhead Protection Manager. Specific tasks and strategies will be performed by the Wellhead Protection Manager or delegated by the Manager to City staff or outside resources. The City believes that the current water supply system is sufficient to meet projected future water demands. The City has an ongoing maintenance program to ensure that the water supply system will continue to be sufficient to meet water demand in the future. The installation and operation of any additional high capacity wells in the source water aquifers in or near the DWSMAs would have the potential to affect the size and shape of the Prior Lake WHPAs and DWSMAs. At a minimum, the City will update its Wellhead Protection Plan every 10 years, as required by the Wellhead Protection Rules. If new high capacity wells are installed in the area, the City will evaluate if operation of such new wells would make it necessary to update the WHPA and DWSMA delineations. 13 13 5.0 Issues, Problems, and Opportunities In accordance with Minnesota Rules chapter 4720.5230, this section discusses issues, problems, and opportunities related to land use, comments from local units of government and the general public, the data elements and local, state, and federal programs and regulations. 5.1 Land Use Issues, Problems, and Opportunities 5.1.1 Source Water Aquifers As shown on Figure 1, the aquifer vulnerability classification in the Prior Lake DWSMAs ranges from Low to High. In the East DWSMA, the aquifer vulnerability is classified as High in approximately 15 percent of the area within the DWSMA. The aquifer vulnerability is classified as Moderate in approximately 16 percent of the area in the East DWSMA and as Low in approximately 68 percent of the area. The entire West DWSMA has an aquifer vulnerability classification of Low. The City currently has seven primary water supply wells (Table 1). At the time this Plan amendment was prepared, the City was working to finalize an agreement with the SMSC to purchase water into the future. With a water purchase agreement in place, the City would not expect to install any additional water supply wells during the 10-year life of this Plan amendment. The addition of high capacity wells within or near the DWSMAs could produce changes in the groundwater flow system (e.g., flow direction or static water level) which could result in changes to the shape and extent of the WHPAs and DWSMAs delineated for this WHPP. The City will work with the Wellhead Protection Consultant and MDH to evaluate the WHPA and DWSMA delineations and amend this WHPP as necessary if and when additional high capacity wells are installed within or near the DWSMAs. As discussed elsewhere in this Plan amendment, potential sources of contamination that could affect the source water aquifer were identified during the PCSI. These potential contaminant sources include wells, storage tanks, properties where Class V wells may be or may have been present, chemical storage locations, hazardous waste generators, properties containing SSTS, and a cemetery. As indicated in Table 3, the only potential contaminant source identified in an Inner Wellhead Management Zone is owned by the City (i.e., one observation well new Well 9). As such, the City maintains control over the site and manages it appropriately. A small number of the identified potential contaminant source locations fall in the Emergency Response Zones (ERZs) around the municipal wells. The entities in the various potential contaminant source categories are regulated and tracked by County, State, or Federal programs. The lack of City jurisdiction over the potential contaminant source entities poses a potential problem for protection of the source water aquifers. However, the jurisdictional issues also provide the City of Prior Lake with an opportunity to develop working relationships with County and State agencies that regulate and track the potential contaminant source entities. Therefore, the City will work with the appropriate County and State programs, to the extent practicable, to address the potential contaminant sources within the DWSMAs. 14 14 The East DWSMA extends into Spring Lake and Credit River Townships. This provides the City with an opportunity to work with the Townships to protect the source water aquifers, when mutually beneficial. The Prior Lake 2030 Comprehensive Plan (Prior Lake, 2005) includes policies for managing growth of the City, the allowable land uses and water supplies (Prior Lake, 2005). Policies identified in the Comprehensive Plan will help protect the City’s source water aquifers. At the time this Plan amendment was prepared, the City was working on their 2040 Comprehensive Plan. 5.1.2 Groundwater Quality Groundwater pumped from the Jordan Sandstone aquifer and Tunnel City-Wonewoc aquifer by the Prior Lake municipal wells is currently free of pathogens and disease-causing organisms. In addition, Prior Lake’s public water supply currently meets or exceeds all applicable federal standards related to human health as documented in the City’s annual Consumer Confidence Reports. The 2016 Consumer Confidence Report is presented in Appendix D. Consumer Confidence Reports from the past several years can be found on the City’s website at http://www.cityofpriorlake.com/drinking-water-supply.php. Prior Lake has always placed a high priority on the safety of the municipal water supply system. In order to safeguard the municipal water supply system, the City strictly limits access to their municipal wells and associated infrastructure to the City’s Public Works staff. As discussed in Appendix C, potential contaminant sources identified in the Prior Lake DWSMAs include wells, storage tanks, properties where Class V wells may be or may have been present, chemical storage locations, hazardous waste generators, properties containing SSTS, and a cemetery. Table 3 provides a summary of the numbers of these potential contaminant sources identified in the DWSMAs during development of this Plan amendment. Development of this Plan amendment provides Prior Lake with an opportunity to prepare and implement a program to track potential contaminant source locations within the DWSMAs and educate the public regarding source water protection. 5.1.3 DWSMAs Current land uses within the DWSMAs include Residential of various types, Park/Recreational/Preserve, Open Water, Institutional, Agricultural, Industrial and Utility, Golf Course, and Retail and Other Commercial As indicated in Table 1, Prior Lake Wells 3, 4, 5, and 8 have been classified as vulnerable to contamination. The vulnerability to contamination of the portions of the source water aquifers encompassed by the DWSMAs has been classified as ranging from Low to High. Current and future land uses could potentially affect the management strategies for Prior Lake’ DWSMAs. No other issues, problems, or opportunities, beyond those discussed herein, have been identified regarding land uses in the DWSMAs. Information gathered for this WHPP amendment provides the City with the basis for tracking potential contaminant sources within the DWSMAs. Thus, the City has an opportunity to catalog and track potential contaminant sources and stay informed of land use changes or potential future threats to the source water aquifers. 15 15 The presence of privately owned wells within the DWSMAs provides potential pathways for contaminants to reach the source water aquifers if they are not properly constructed, maintained, or, if unused, properly sealed. Locations of wells identified within the DWSMAs during the PCSI are shown in Appendix C. 5.2 Issues, Problems, and Opportunities Disclosed at Public Meetings and in Written Comments At the beginning of this wellhead protection planning process, the City of Prior Lake sent a notification to surrounding local units of government of its intention to initiate work on an amendment to its wellhead and source water protection plan. After approval by the MDH in September 2016 (MDH, 2016a), Prior Lake sent information on the WHPAs, DWSMAs, and aquifer and well vulnerability to the local units of government whose jurisdictions overlay some portion of the Prior Lake DWSMAs. The City of Prior Lake held a public information meeting on October 27, 2016 to receive comments from the general public regarding Part 1 of the WHPP. The local units of government whose jurisdictions overlay the DWSMAs were notified of the public information meeting. No comments on the Part 1 Wellhead Protection Plan were received from the local units of government or the general public at the Public Information Meeting. As required by the Wellhead Protection Rules, the City provided local units of government whose jurisdictions overlap the DWSMAs a copy of the draft Part 2 Wellhead Protection Plan amendment. ***NOTE TO REVIEWERS: ANY WRITTEN COMMENTS RECEIVED FROM LGUs WILL BE ADDRESSED HER E AFTER THE CONCLUSION OF THE LGU REVIEW PERIOD*** The City of Prior Lake held a Public Hearing on the WHPP amendment on XXXXXXX, 2017. The local units of government whose jurisdictions overlap the DWSMAs were notified of the Public Hearing date, time, and location. ***NOTE TO REVIEWERS: ANY COMMENTS RECEIVED AT THE PUBLIC HEARING WILL BE ADDRESSED HERE *** 5.3 Issues, Problems, and Opportunities Related to the Data Elements Beginning with the delineation of WHPAs and DWSMAs (i.e., Part 1 of the WHPP) and continuing in this document, the required data elements have been addressed. As discussed in Appendix C, available local and regional information was used in compiling and assessing the data elements. Prior Lake intends to continue collecting data from the municipal wells as well as other applicable information from public data sources, as it becomes available, during the life of this Plan. At a minimum, this Plan will be revised/updated in ten years, as required by the Wellhead Protection Rules. Each time this Plan is revised/updated the most recent and accurate data available will be used. 5.4 Issues, Problems, and Opportunities Related to Local, State, and Federal Programs and Regulations The State of Minnesota and local units of government currently enforce land use ordinances, zoning laws, sewer ordinances, well permitting regulations, and groundwater appropriation permit regulations. Prior Commented [JG3]: Date will be added prior to final submittal to MDH 16 16 Lake will work to promote the use of best management practices for potential contaminant source properties within the DWSMAs. It is anticipated that local issues will be adequately addressed through these existing processes and adoption of best management practices. The proximity of the Savage Fen to the City of Prior Lake requires that potential impacts to the Fen from pumping be considered if the municipal water supply system expands in the future. Potential adverse impacts on the Savage Fen could affect the quantity of water available to Prior Lake from the Jordan Sandstone aquifer in the future. Therefore, the City of Prior Lake will work with the Minnesota Department of Natural Resources (MDNR) to determine what, if any, affect future increases in pumping from Prior Lake municipal water supply system may have on the Savage Fen. 17 17 6.0 Wellhead Protection Goals In accordance with Minnesota Rules chapter 4720.5240, this section discusses the goals for present and future water use and land use to provide a framework for WHPP objectives and related actions. Goals presented in this section were selected based on the information gathered and compiled from the data elements, delineations of the WHPAs and DWSMAs, results of the vulnerability assessments, results of the PCSI, expected changes in land and water uses, identified issues, problems, and opportunities, and evaluation of this information. Through the years, the City has met water demands with a sufficient and safe water supply. Prior Lake intends to continue providing a safe water supply to its residents and businesses and other customers into the future by implementing this WHPP. Implementation of this WHPP amendment will help ensure that the City will meet this goal. As shown in Table 1, Prior Lake Wells 3, 4, 5, and 8 are classified as being vulnerable to contamination. As shown on Figure 1, aquifer vulnerability classifications of the uppermost source water aquifer within the Prior Lake DWSMAs ranges from Low to High. The goals and objectives of this WHPP will focus on reducing the potential contaminant pathways to the source water aquifers that may be provided by private wells, and educating property owners and water supply users to ensure proper management of the portions of the DWSMAs. Prior Lake has identified the following goals for implementation of this WHPP:  The City will work to maintain or improve the current level of water quality so that the municipal water supply will continue to meet or exceed all applicable state and federal water quality standards.  Work with other Spring Lake and Credit River Townships to protect the source water aquifers  The City will provide information and promote activities that protect the source water aquifer that provides water to the municipal system. This will include increasing public awareness of the Wellhead and Source Water Protection Program and groundwater-related issues, and management of the identified potential contaminant sources within the DWSMAs.  The City will continue to collect data to support future wellhead and source water protection efforts. 18 18 7.0 Objectives and Plans of Action In accordance with Minnesota Rules chapter 4720.5250, this section discusses the objectives and plans of action to goals for Prior Lake’s Wellhead and Source Water Protection Program. 7.1 Establishing Priorities Within the DWSMAs, the vulnerability to contamination of the source water aquifer from which the City of Prior Lake wells draw their water ranges from Low to High (Barr, 2016). The January 24, 2017 Scoping 2 Decision Notice from the MDH required Prior Lake to evaluate the following types of potential contaminant sources in the PCSI:  In areas where the aquifer vulnerability is classified as High: o Above-ground and underground storage tanks o Chemical storage locations o Hazardous waste generators o Leaking underground storage tank (LUST) locations o Potential Class V well locations o Pipeline facilities o Spills/potential contamination sites o Subsurface sewage treatment systems (SSTS) o Wells  In areas where the aquifer vulnerability is classified as Moderate o Above-ground and underground storage tanks o Leaking underground storage tank (LUST) locations o Potential Class V well locations o Pipeline facilities o Chemical storage locations o Spills/potential contamination sites o Wells  In areas where the aquifer vulnerability is classified as Low o Potential Class V well locations o Wells As discussed elsewhere in this Plan amendment, not all types of potential contaminant sources were identified as present in the applicable aquifer vulnerability zone. The number of each type of potential contaminant source in the DWSMAs is shown in Table 3. The City of Prior Lake has identified the objectives and corresponding actions described in the following sections for accomplishing the wellhead and source water protection goals presented above in Section 6. These goals for the City of Prior Lake’s Wellhead and Source Water Protection Program will be achieved through the following existing and planned programs: 19 19  Wells o Promoting proper management of existing active wells in the DWSMAs o Encouraging the proper sealing of all unused wells within the DWSMAs o Locating old Prior Lake Well 2 o Maintaining up to date information on high capacity wells in/near the DWSMAs  Potential contaminant source properties o Encouraging proper handling of chemicals/wastes o Encouraging proper operation and maintenance of storage tanks o Notifying property owners that their properties lie within the DWSMAs o Periodically obtaining updated information on potential contaminant sources in the DWSMAs from the regulating agencies to maintain an up-to-date potential contaminant source database for the DWSMAs and allow timely recognition of potential issues that could affect the Prior Lake municipal water supply or DWSMA.  Public education o Distribution of the Prior Lake Annual Water Quality Report for the water supply system, o Posting Wellhead Protection Program information on the City of Prior Lake website http://www.cityofpriorlake.com/index.php o Inclusion of wellhead and source water protection in the City’s planning process  Continued data collection o Recording static and pumping water levels in the Prior Lake municipal wells o Recording water levels in the City’s observation well network o Collection of additional local geologic and hydrogeologic data as it becomes available from public sources or from City-sponsored projects. 7.2 Well Management The well management objectives outlined in this section consist of promoting the proper sealing of any unused, unmaintained, damaged, or abandoned wells, promoting proper management of active wells within the DWSMAs, locating old Prior Lake Well 2, and tracking high capacity wells in/near the DWSMAs. 7.2.1 Distribution of Well Operation and Maintenance Information The MDH has developed a handbook of information on proper well construction, operation, and maintenance titled “Well Owner’s Handbook – A Consumer’s Guide to Water Wells in Minnesota”. This handbook is available on the MDH website. Prior Lake will attempt to provide the handbook information to all owners of active wells within the DWSMAs. To accomplish this, a link to the MDH website page where the handbook can be found will be added to the City’s website and the City will attempt to notify well owners within the DWSMAs via mail that the information is available through the City’s website. Prior Lake staff will track the number of well owners to whom they provide information regarding the Well Owner’s Handbook. 20 20 7.2.1.1 Source of Action Prior Lake staff will obtain the website information for the handbook from the MDH. City staff will then mail the website information to appropriate addresses within the DWSMAs, include a link to the MDH website on the City’s website and in the City’s The Wavelength newsletter, and have a copy of the handbook available in a publicly accessible location in the Prior Lake City offices. 7.2.1.2 Cooperators None. 7.2.1.3 Time Frame Distribution of the information to owners of will be done within one year after approval of this WHPP. 7.2.1.4 Estimated Cost Approximately $500 - $1,000. Costs will include City staff time, mailer printing and postage costs, and handbook printing costs. 7.2.1.5 Goals Achieved Through the MDH handbook, well owners will be educated concerning the proper operation and maintenance of wells. Proper operation and maintenance of wells will reduce the potential risk of these wells becoming pathways for contaminants to travel from the ground surface to the source water aquifer. Success criterion: Notification of well owners in the DWSMAs by mail that information on the proper operation and maintenance of private wells is available through the City’s website will be completed within one year of MDH approval of the WHPP and tracking of the number of well owners to whom the notification is sent. 7.2.2 Promote the Proper Sealing of Unused, Unmaintained, Damaged, or Abandoned Wells within the DWSMAs City staff will promote the proper sealing of unused, privately owned wells within the DWSMAs. As indicated in Table 3, the highest priority will be placed on those wells that are completed in the source water aquifers from which the Prior Lake municipal wells. Proper sealing of unused wells can be promoted by periodically mailing a reminder to owners of wells that unused wells should be properly sealed and/or by posting a reminder on the City’s website , in the Wavelength newsletter, and working with Credit River Township and Spring Lake Township to post reminders on their websites The reminder will include a notification of the loan and incentives program available through the Scott Watershed Management Organization for the sealing of unused wells. Proper sealing of unused wells at properties on which new developments are built or as properties are redeveloped can be promoted as part of the City’s development approval process. 7.2.2.1 Source of Action City of Prior Lake staff. 21 21 7.2.2.2 Cooperators Credit River Township, Spring Lake Township 7.2.2.3 Time Frame The first reminders to owners of wells identified as high priority will all occur within two years of approval of this Plan. Subsequent reminders will be distributed every three to five years after the first reminder. 7.2.2.4 Estimated Cost Approximately $1,000-$2,000 for each well sealing reminder mailing event. City staff time and costs for preparing and mailing reminders to well owners and for preparing reminders to be included in the City’s newsletter, on the City’s website, or on the Credit River Township and Spring Lake Township websites. 7.2.2.5 Goals Achieved As this action is implemented, the City’s goal of eliminating potential pathways for contaminants to travel from the ground surface to the source water aquifer will be realized. Success criterion: The first reminder distributed to well owners in the DWSMAs within two years of MDH approval of the WHPP and subsequent reminders distributed every three to five years thereafter for the life of the Plan and tracking of the number of reminders distributed. 7.2.3 Locate Old Prior Lake Well 2 The City has not used Well 2 (Unique No. 212318) for many years. Currently, the exact location of Well 2 is not known. City staff will research available records and, if necessary, request assistance from a utility locating contractor or others to identify the location of old Well 2 and evaluate options for the well. Once the well is located, the City will evaluate options for the well which may include sealing the well or converting it to a groundwater level monitoring well. 7.2.3.1 Source of Action City staff will research available records and, if necessary request assistance from others for locating the well or evaluating options for addressing the well. 7.2.3.2 Cooperators A utility locating contractor or others, as needed. 7.2.3.3 Time Frame City staff will begin the review of available information within two years of approval of this Plan amendment. 7.2.3.4 Estimated Cost It is possible that the cost could be $10,000 or more, depending on the level of assistance required from outside resources. 22 22 7.2.3.5 Goals Achieved Once old Well 2 is located, it can be properly sealed or, perhaps, put to a beneficial use such as monitoring of groundwater levels. Success criterion: Locating old Well 2 and determining what should be done with the well. 7.2.4 Identify New High-Capacity Wells Within or Near the DWSMA With assistance from the MDH and MDNR and, possibly, the Wellhead Protection Consultant, City staff will identify new high-capacity wells that are proposed for construction in or near Prior Lake’s DWSMAs, and/or major changes to groundwater appropriations for existing high-capacity wells, to determine whether the pumping of said wells will affect the groundwater flow direction, static water level, or groundwater availability within the DWSMAs or alter the current boundaries of the DWSMA delineations or other portions of the City’s WHPP. 7.2.4.1 Source of Action City staff will request, or direct the Wellhead Protection Consultant to request, that the MDH and Regional MDNR office provide information on any newly proposed/constructed high capacity wells within or near the DWSMAs or any changes to existing appropriations permits for existing, nearby high capacity wells. City staff will also request assistance from the Wellhead Protection Consultant and the MDH to evaluate whether proposed pumping (or changes to pumping) will change the boundaries of the DWSMAs delineated for Prior Lake’s wells. 7.2.4.2 Cooperators MDH, MDNR, and, possibly, the Wellhead Protection Consultant. 7.2.4.3 Time Frame Request information from the MDH and MDNR every two years; evaluation of potential changes to the DWSMA boundaries as needed. 7.2.4.4 Estimated Cost Approximately $3,000-$10,000 for each event of identifying new wells or changes to existing appropriations permits and evaluating how the changes may affect the DWSMA boundaries. City staff time and, potentially, Wellhead Protection Consultant time. 7.2.4.5 Goals Achieved As this action is implemented, the City’s WHPA/DWSMA delineations will remain current. New well owners will also be identified and educational materials identified/developed as part of other well management strategies can be provided to these new well owners. Success criterion: Bi-annual determination of whether there are new high capacity wells in or near the DWSMAs and if there have been any major changes in permitted appropriations for existing high capacity wells in or near the DWSMAs. 23 23 7.3 Potential Contaminant Source Properties The management objectives outlined in this section consist of promoting proper operation of storage tanks, maintaining an up-to-date database of storage tank properties in the portions of the DWSMAs where aquifer vulnerability is classified as Moderate or High, promoting proper handling of chemicals and wastes, reduction of waste streams at potential contaminant source properties within the DWSMAs, promoting proper operation of SSTS, and maintaining the Inner Wellhead Management Zone (IWMZ) around each well so that potential contaminants are prevented from entering the IWMZs. 7.3.1 Information for Registered Storage Tank Owners With the assistance of the MPCA, and possibly the Wellhead Protection Consultant, the City will prepare an information packet for owners of properties within the Moderate and High vulnerability portions of the East DWSMA that have registered storage tanks. Information packets will not be sent to owners of properties for which available information indicates that the storage tanks have been removed. This information packet will likely include information on the City’s Wellhead and Source Water Protection Program (the Program) and MPCA publications on proper operation and maintenance of storage tanks. Copies of the information packet materials will be retained by the City. 7.3.1.1 Source of Action City staff, possibly with the assistance of the Wellhead Protection Consultant, will obtain from the MPCA publications on proper storage tank operation and maintenance for the information packet. City staff, possibly with the assistance of the Wellhead Protection Consultant, will also prepare general information regarding the Program for inclusion in the information packet. 7.3.1.2 Cooperators MPCA and, possibly, the Wellhead Protection Consultant. 7.3.1.3 Time Frame The information packet will be sent to owners of active tanks on properties where aquifer vulnerability is classified as Moderate or High within two years of approval of this Plan. Updates to targeted registered storage tank owners will be provided every three to five years thereafter. 7.3.1.4 Estimated Cost Approximately $1,000-$3,000 each time information packets are distributed to owners of registered tanks. Estimated costs include City staff time, MPCA staff time, information packet production and postage costs, and Wellhead Protection Consultant costs (as necessary). 7.3.1.5 Goals Achieved Targeted property owners will be educated concerning the Wellhead and Source Water Protection program and on the issues associated with storage tanks and the requirements necessary to maintain a safe and secure system. Property owners will be encouraged to use best management practices regarding their storage tanks, and report any releases of contaminants to the City in addition to any other actions 24 24 required by applicable regulations. The property owners will also be educated about groundwater protection principles, and steps that everyone can take to protect the City ’s municipal water supply. This information packet provides the City the opportunity to heighten the awareness of wellhead and source water protection with these property owners. Success criterion: Distribution of information packets completed according to the schedule outlined in section 7.3.1.3 and tracking of the number of information packets distributed. 7.3.2 Tracking of Registered Storage Tanks Every two years after approval of this Plan amendment the City will request, or direct the Wellhead Protection Consultant to request, from the MPCA information on the status of registered storage tanks in the portions of the main Prior Lake DWSMA in which the aquifer vulnerability is classified as Moderate or High. This information will allow the City of Prior Lake to update the PCSI database and maintain current information regarding these potential contaminant sources in the DWSMAs. This activity should also identify new registered storage tanks in the DWSMAs. 7.3.2.1 Source of Action City staff, or the Wellhead Protection Consultant on behalf of the City, will contact MPCA staff to obtain the information on the status of registered storage tanks. 7.3.2.2 Cooperators MPCA and, possibly, the Wellhead Protection Consultant 7.3.2.3 Time Frame This information will be requested from the MPCA every two years starting two years after approval of this Plan. 7.3.2.4 Estimated Cost Approximately $500-$1,500 for each review and update. Estimated costs include City staff time and Wellhead Protection Consultant time (as necessary). 7.3.2.5 Goals Achieved By tracking the status of registered storage tanks within the target areas, the City will remain aware of the current status of these potential contaminant sources. This will allow the City to identify locations for potential impacts to the municipal water supply and give the City time to determine the best response to any potential impacts before the municipal water supply is compromised. Success criterion: Submittal of an annual request to the MPCA for information regarding the status of registered storage tanks in the portions of the main DWSMA where aquifer vulnerability is classified as Moderate or High and completion of any updates to the PCSI database necessitated by the new information. 25 25 7.3.3 Information for Chemical Storage and Hazardous Waste Generator Properties Through direct mail contact, the City will encourage the owners of the potential contaminant source properties associated with chemical storage or hazardous waste generator permits (that are not associated with LUSTs or existing storage tanks) within the East DWSMA to participate in self-audits of their chemical storage and waste generation and handling. The direct mail contact from the City will also encourage these businesses to request a site visit from the Minnesota Technical Assistance Program (MnTAP). MnTAP helps Minnesota businesses implement industry-tailored solutions that maximize resource efficiency, prevent pollution, and reduce costs to improve public health and the environment. MnTAP helps Minnesota businesses protect the environment and stay competitive by providing practical alternatives to prevent pollution of land, air, and water. By reducing waste and increasing efficiency, businesses can save on disposal and raw material costs, decrease the regulatory compliance burden, and make working conditions healthier and safer for their employees. 7.3.3.1 Source of Action City staff, perhaps with the assistance of the Wellhead Protection Consultant, will prepare and distribute the direct mail notice. 7.3.3.2 Cooperators Wellhead Protection Consultant, potentially. 7.3.3.3 Time Frame Distribution of the direct mail notice will occur within one year of approval of this Plan. Bi-annually thereafter the direct mail notice will be sent to owners of any newly identified properties within the Moderate or High vulnerability portions of the East DWSMA that are associated with chemical storage or hazardous waste generator permits. 7.3.3.4 Estimated Cost Costs for the preparation of the direct mail notice will include City staff time, printing, postage, and, potentially, Wellhead Protection Consultant costs and are estimated to be $800 to $1,800 each time a notice is prepared and sent. 7.3.3.5 Goals Achieved Business owners will become aware of issues related to their chemical storage or waste generation and handling and learn of available assistance for identifying ways to minimize and properly dispose their waste. Success criterion: Contact of property owners according to the schedule outlined in section 7.3.3.3. 26 26 7.3.4 Inner Wellhead Management Zone Management The Inner Wellhead Management Zone (IWMZ) is defined in the Minnesota Rules as that area within a 200-foot radius of a public water supply well. The City will monitor setbacks in the IWMZs, possibly with the assistance of the MDH, to ensure that the IWMZ around each Prior Lake municipal well remains free of potential contaminant sources. City staff will document each IWMZ inspection and any actions taken to remove potential contaminant sources from an IWMZ. 7.3.4.1 Source of Action Prior Lake staff 7.3.4.2 Cooperators Possibly the MDH 7.3.4.3 Time Frame The monitoring of setbacks within the IWMZs will be done biannually after approval of this Plan. 7.3.4.4 Estimated Cost Costs for monitoring the IWMZ setbacks include Prior Lake staff time estimated as $1,200. 7.3.4.5 Goals Achieved By monitoring the IWMZ setbacks, Prior Lake will be able to keep the IWMZ around each well free of potential contaminant sources and ensure that any new regulated activities will meet required setbacks. Success criterion: Completion of IWMZ potential contaminant source inventories keeping the IWMZ free of potential contaminant sources. 7.3.5 Transportation Corridors and Emergency Response Establish communication and create awareness among City of Prior Lake staff about transportation corridor issues that may affect the public water supply and the procedures in place to address spills and prevent released contaminants from entering the municipal water supply. Transportation corridors include County and State highways. The Wellhead Protection Manager will work with the City’s Emergency Manager to ensure that emergency procedures that will protect the municipal water supply are part of the City’s emergency response program. The Wellhead Protection Manager will also provide copies of the WHPP to the Minnesota Pollution Control Agency (MPCA). 7.3.5.1 Source of Action Prior Lake staff 7.3.5.2 Cooperators None 27 27 7.3.5.3 Time Frame Meeting with the Emergency Manager will occur within two years of approval of this plan. Transmittal of the WHPP to the MPCA will occur within one year after approval of this plan. 7.3.5.4 Estimated Cost Costs for this action will include City staff time and production costs for WHPP copies. Estimated cost is $1,000 to $2,000. 7.3.5.5 Goals Achieved The City’s emergency responders will work with and assist County and State first responders in the handling of spills in transportation corridors to ensure, to the extent possible, released contaminants from entering the environment and impacting the municipal water supply. Emergency responders will be educated regarding the boundaries of the Prior Lake DWSMAs and the management actions that are planned. Success criterion: Emergency responder awareness of the City’s DWSMAs. 7.3.6 Subsurface Sewage Treatment Systems The City of Prior Lake relies on Scott County Individual/Community Sewage Treatment Ordinance No. 4 and State rules for regulating the construction and operation of SSTS. The County ordinance incorporates by reference the MPCA rules for SSTS in Minnesota Rules part 7080. Scott County reviews SSTS plans and issues permits for construction of these systems. State statute requires that all SSTS are pumped out at least once every three years. There are a limited number of operating SSTS within the City limits. City staff will bi-annually request updates from Scott County on the status of SSTS within the East DWSMA. The City will rely on the existing County ordinance and State statute for enforcement of the regulations associated with SSTS. The City will provide a link on their website to information on how to obtain the document “Septic System Owner’s Guide” prepared by the Minnesota Extension Service to owners/residents of properties within the East DWSMA on which SSTS are located. The City will send a postcard or letter notifying the owner of the SSTS in the East DWSMA of the website link to regarding information on proper operation and maintenance of an SSTS. The notification will include a request for the property owner to assist Prior Lake in their efforts to protect their water supply by properly maintaining their SSTS. 7.3.6.1 Source of Action City staff will prepare the mailing and send it to the appropriate addresses within the East DWSMA. City staff will bi-annually request updates on the status of SSTS within the East DWSMA from Scott County. 28 28 7.3.6.2 Cooperators Scott County 7.3.6.3 Time Frame The notification will be sent out within two years of approval of this Plan amendment. Updates on the status of SSTS within the East DWSMA will be requested from Scott County every two years after the initial notification is sent out. If one of these updates from Scott County identifies a new owner of a property within the East DWSMA containing an SSTS the City will send a notification letter to the new property owner. 7.3.6.4 Estimated Cost City staff time, mailing preparation and postage costs. The cost of preparing and sending the initial mailing is estimated to be approximately $100. The estimated cost of bi-annual review of SSTS information received from Scott County is approximately $200 to $600. 7.3.6.5 Goals Achieved The primary goals are to make the SSTS owner aware of the issues related to system operation and maintenance and how these issues relate to wellhead protection, provide information on SSTS maintenance to the system owner, and to track the operational status of SSTS within the East DWSMA. Success criterion: Distribution of information completed according to the schedule outlined in section 7.3.6.3 and tracking of the number of notifications distributed. 7.4 General Public Education Public education concerning the DWSMAs associated with the City’s municipal wells will include: inclusion of Wellhead and Source Water Protection Program information in the City’s The Wavelength newsletter, distribution of the Prior Lake Annual Water Quality Reports to residents of Prior Lake, providing information on the City of Prior Lake website (http://www.cityofpriorlake.com/index.php) and inclusion of wellhead and source water protection into the City’s planning process. 7.4.1 Wellhead Protection Information The City will develop information regarding the Wellhead and Source Water Protection Program for inclusion in the City’s The Wavelength newsletter. The newsletter is available to all City residents. 7.4.1.1 Source of Action City staff will prepare information on wellhead protection for the City’s newsletter one to two times per year. If necessary, the Wellhead Protection Consultant will be contacted for assistance in preparing this information for the newsletter. The newsletter is distributed to Prior Lake residents and businesses. 7.4.1.2 Cooperators If necessary, the Wellhead Protection Consultant. 29 29 7.4.1.3 Time Frame One to two times per year upon approval of this WHPP. 7.4.1.4 Estimated Cost Approximately $500 - $2,500 each time information is prepared for the newsletter. Costs will include City staff time for preparing the information, and if needed, costs for Wellhead Protection Consultant assistance. 7.4.1.5 Goals Achieved The information in the newsletter will be intended to educate owners of property within the DWSMAs, and the general public, about the City’s Wellhead and Source Water Protection Program, groundwater protection principles, and steps that everyone can take to protect the City’s municipal wate r supply. Success criterion: At least annual distribution of information related to groundwater and wellhead protection via the City’s newsletter. 7.4.2 Drinking Water Quality Report The City will continue to prepare and distribute the Annual Water Quality Report to all Prior Lake residents. The report provides residents with information regarding the City’s municipal water supply and its water quality. 7.4.2.1 Source of Action City staff 7.4.2.2 Cooperators None 7.4.2.3 Time Frame Annually as required by Federal regulations 7.4.2.4 Estimated Cost Costs include City staff time for preparation of the report , including a notice in the City’s newsletter that the report is available on the City’s website, and posting the report on the City’s website. Estimated annual cost for preparation of the report is $500 to $1,000. 7.4.2.5 Goals Achieved The residents of Prior Lake will become more aware of the Federal water quality requirements for public water supplies. Residents will also become more aware of the overall water quality of Prior Lake’s municipal water supply. Success criterion: Annual publication/distribution of the Annual Water Quality Report. 30 30 7.4.3 City of Prior Lake Website The City will post information on the Wellhead and Source Water Protection Program on the City’s website (http://www.cityofpriorlake.com/index.php). If necessary, the Wellhead Protection Consultant will be asked to assist with the preparation of information to be posted on the website. 7.4.3.1 Source of Action City staff 7.4.3.2 Cooperators Wellhead Protection Consultant (as needed) 7.4.3.3 Time Frame To begin within 1 year of approval of this WHPP. Information on the website will be updated periodically thereafter. 7.4.3.4 Estimated Cost Approximately $500-$2,500. City staff time and, potentially, Wellhead Protection Consultant costs. 7.4.3.5 Goals Achieved The residents of Prior Lake will become more aware of wellhead and source water protection issues and the actions Prior Lake is taking to protect the municipal water supply. Education of the residents should lead to a better awareness of pollution prevention among the City’s population. Success criterion: Posting of Wellhead and Source Water Protection Program information on the City and County websites according to the schedule identified in section 7.4.3.3. 7.4.4 Inclusion of Wellhead and Source Water Protection in the Planning Process Within the DWSMAs A copy of this WHPP amendment will be supplied to the City’s Community Development Director so that they are aware of the Wellhead Protection Program. The Wellhead Protection Manager will work with the Community Development Director to determine the best way to ensure that the City’s planning process is consistent with the goals and objectives of this WHPP. Options that may be discussed could include developing checklists related to wellhead protection for use in the planning review process, development of guidelines (based on MDH guidance) regarding when to allow storm water control facilities in the DWSMAs, adjustments to zoning, amendments to the City Code, and available resources from Metropolitan Council. 7.4.4.1 Source of Action City staff 31 31 7.4.4.2 Cooperators Metropolitan Council, if necessary 7.4.4.3 Time Frame The Wellhead Protection Manager will meet with the Community Development Director within two years of approval of this WHPP to discuss how best to incorporate wellhead and source water protection into the City’s development, zoning, and planning processes. 7.4.4.4 Estimated Cost Approximately $3,000-$5,000. Costs to complete this task will include staff time to develop a process for including wellhead protection in the planning process and to review proposals that could affect the municipal wells and associated DWSMAs. Success criterion: Implementation of a method for incorporating wellhead and source water protection into the City’s planning and development process. 7.4.4.5 Goals Achieved Wellhead and source water protection will be incorporated into future planning efforts. Potential pollution risks to the source water aquifers will be reduced. 7.5 Data Collection Prior Lake will continue to collect and maintain local geologic and hydrogeologic data as it becomes available in order to improve and augment current information and to provide additional data for future revisions of this WHPP. The City will also continue to collect information on potential contaminant sources within the DWSMAs. 7.5.1 Monitoring Static and Pumping Levels in Municipal Wells The City will continue to routinely measure the static and pumping water levels in the municipal wells. These water levels will be recorded daily by the SCADA system and can be summarized in the reports obtained from the SCADA system. 7.5.1.1 Source of Action City staff 7.5.1.2 Cooperators None. 7.5.1.3 Time Frame Ongoing 32 32 7.5.1.4 Estimated Cost Approximately $2,000-$4,000 annually [CITY REVIEWERS PLEASE UPDATE COST ESTIMATE IF NECESSARY] 7.5.1.5 Goals Achieved Routine collection of groundwater levels in the municipal wells will provide data for the evaluation of groundwater elevation trends over time. Success criterion: Compilation of a long term groundwater elevation dataset that can be used to evaluate groundwater elevation trends in the source water aquifers. 7.5.2 Water Level Monitoring in City Observation Wells The City maintains a network of observation wells instrumented with Level Troll 500s (transducers with onboard dataloggers manufactured by In-Situ, Inc.) to measure and record water levels. Recorded groundwater level data are downloaded at least semiannually. The downloaded data are sent to the Wellhead Protection Consultant to be evaluated. The Wellhead Protection Consultant provides the City with a summary technical memorandum for each data set. When appropriate, the technical memorandum also will include recommendations for transducer maintenance or replacement. The observation well network currently includes wells completed in the Jordan aquifer and in the Quaternary sand and gravel in the bedrock valley that is between the East and West DWSMAs. The City plans to add a Level Troll 500 to the observation well completed in the Tunnel City-Wonewoc aquifer located near Wells 9 so that it can be added to the active observation well network. The Unique No. for the observation well is 721847. 7.5.2.1 Source of Action City staff 7.5.2.2 Cooperators Wellhead Protection Consultant 7.5.2.3 Time Frame The transducer will be added to well 721847 within two years of approval of this WHPP. The semiannual data downloads and evaluation of water level data will continue on the current schedule. 7.5.2.4 Estimated Cost The cost for a new transducer, cable, and dessicant in well 721847 will be approximately $1,500 to $2,000. The actual cost will depend upon the length of cable determined to be necessary. The annual cost for download of data from the transducers in the observation wells by City staff, and the Wellhead Protection Consultant’s evaluation of the data and preparation of the technical memorand a is approximately $7,000- $9,000 33 33 7.5.2.5 Goals Achieved Routine collection of groundwater levels in the observation wells will provide data for the evaluation of groundwater elevation trends over time in the source water aquifers. Success criterion: Deployment of a Level Troll 500 in well 721847 and continued semiannual downloading and evaluation of water level data from the observation wells. 7.5.3 Other Geologic and Hydrogeologic Data Collection The City will attempt to collect local geologic and hydrogeologic data for the Prior Lake area as it becomes available from other public sources or through City-sponsored projects. The City will also support, whenever possible, future data collection efforts by other governmental entities (e.g., MGS, MDH, MDA, MDNR, MPCA, and Scott County). 7.5.3.1 Source of Action City staff 7.5.3.2 Cooperators State and Scott County agencies conducting geologic and hydrogeologic studies, well drilling companies, Wellhead Protection Consultant, and others. 7.5.3.3 Time Frame Ongoing beginning with approval of this WHPP. 7.5.3.4 Estimated Cost Approximately $1,000 to $1,500 for compiling data from other public sources. 7.5.3.5 Goals Achieved More accurate hydrogeologic data will be available for use in siting future wells and for future revisions of the delineated WHPAs and the DWSMAs for existing and proposed municipal wells. Updated and more accurate vulnerability assessments may be possible as a result of new information. Success criterion: Compilation of a geologic/hydrogeologic dataset that can be used in the future. 7.5.4 Updating of the Groundwater Model Used in the WHPA Delineations Any new local geologic and hydrogeologic data for the Prior Lake area will be periodically reviewed to determine if the groundwater model used in the WHPA delineations will need to be updated. In addition, pumping from high capacity wells often changes over time. Changes in pumping from high capacity wells in or near the Prior Lake DWSMAs could affect the DWSMA boundaries. Therefore, the City will work with the Wellhead Protection Consultant to review available information and determine if the groundwater flow model should be updated so that future WHPA/DWSMA delineations will be consistent with available information. 34 34 7.5.4.1 Source of Action City staff 7.5.4.2 Cooperators City staff and the Wellhead Protection Consultant 7.5.4.3 Time Frame Five to seven years after approval of this WHPP 7.5.4.4 Estimated Cost Approximately $1,000 to $5,000 depending upon the magnitude of the revisions needed to make the groundwater flow model consistent with the most current available information. 7.5.4.5 Goals Achieved The groundwater flow model used in the WHPA delineations will be consistent with available information. Since the groundwater flow model used to delineate the WHPAs will be consistent with current information updating of the WHPAs in the future can be done more efficiently. Success criterion: An updated groundwater flow model that can be used for future well siting or updates to Part 1 of the City’s WHPP. 7.5.5 Potential Contaminant Source Database The City will periodically update the information on potential contaminant sources within the DWSMAs collected during the development of this WHPP, with the assistance of the Wellhead Protection consultant – if needed. The City will add information to the potential contaminant source database as additional potential contaminant source sites are identified or as sites are closed through working with the MPCA, MDH, MDNR, U.S. EPA, and Scott County. New information for the PCSI database will be obtained by contacting appropriate MPCA, MDH, MDNR, U.S. EPA, and County programs every two years regarding any new information on potential contaminant sources that may be available. 7.5.5.1 Source of Action City staff 7.5.5.2 Cooperators MPCA, MDH, MDNR, U.S. EPA, Scott County staff, and the Wellhead Protection Consultant, if needed. 7.5.5.3 Time Frame Every two years after approval of this WHPP. 35 35 7.5.5.4 Estimated Cost Approximately $500-$2,500 every two years. City staff time and, if needed, Wellhead Protection Consultant costs. Actual costs will depend upon the amount of new potential contaminant source location information that must be added to the potential contaminant source database and in any year could be higher than the estimated range shown. 7.5.5.5 Goals Achieved This database will be a useful tool to track, catalog, and document the status of potential contaminant sources within the DWSMAs. Success criterion: Maintaining an up to date potential contaminant source database. 7.5.6 Potential Contaminant Source Verification Potential contaminant sources were identified within the DWSMAs during the PCSI. As part of the development of this WHPP, all locations of identified potential contaminant sources were verified by the Wellhead Protection Consultant to the extent possible based on the available data. Any new potential contaminant source locations identified during the implementation of this WHPP will be verified by the City with the assistance of the Wellhead Protection Consultant, if needed. 7.5.6.1 Source of Action City staff 7.5.6.2 Cooperators City staff and the Wellhead Protection Consultant, if needed. 7.5.6.3 Time Frame Every two years after approval of this WHPP if new potential contaminant sources in the DWSMAs are identified. 7.5.6.4 Estimated Cost Approximately $500-$3,000. City staff time and Wellhead Protection Consultant, if needed. Actual costs will depend upon the number of new potential contaminant source locations that must be verified and in any update could be higher than the estimated range shown. 7.5.6.5 Goals Achieved Verification of newly identified potential contaminant source locations within the DWSMAs will allow the City to remain in compliance with the requirements of the State of Minnesota’s Wellhead and Source Water Protection Program. Verification of the newly identified locations will also ensure that the City uses the most accurate data on type and location of potential contaminant sources as implementation of this WHPP proceeds. 36 36 Success criterion: All potential contaminant source locations in the database are verified to the extent possible. 7.5.7 Tritium Sampling Tritium (3H), a radioactive isotope of hydrogen, whose atmospheric concentrations rose in the 1950s and early 1960s due to atmospheric hydrogen bomb testing, has been used extensively to date groundwater. Tritium activities peaked during atmospheric hydrogen bomb testing of the 1950s and 1960s, and values of 3H in precipitation reached a maximum of approximately 10,000 TU (tritium units) in 1963 (Mazor, 2004). Natural production of 3H in the upper atmosphere introduces approximately 5 TU to precipitation each year (Mazor, 2004). The presence of tritium at concentrations above 1 tritium unit in a groundwater sample indicates the presence of a significant fraction of post-1954 (i.e., recently infiltrated) water in the sample. The MDH sampled Wells 3, 6, and 7 in 2003 and Wells 8 and 9 in 2008 for tritium. Sampling of City wells for tritium at regular intervals will allow for tracking of tritium concentrations over time. If a tritium concentration in a groundwater sample from a well is significantly higher than the concentration in a previous sample from the same well it could be an indication that there is a pathway such as an unused, unsealed well in the vicinity or a hole in the wells’ casing that allows water to move from the surface to the source water aquifer faster than before the pathway became available. The City will ask the MDH to sample Wells 3, 6, and 7 within two years of approval of this Plan. Going forward, the City will then ask the MDH to sample up to three of the municipal wells for tritium every five years. Since the MDH already has a program to sample municipal wells for tritium the City would rely on the MDH to collect the samples and have them analyzed for tritium. 7.5.7.1 Source of Action City and MDH staff 7.5.7.2 Cooperators MDH 7.5.7.3 Time Frame Beginning within two years after approval of this WHPP and then every five years thereafter. 7.5.7.4 Estimated Cost At the time this WHPP was prepared, cities were not charged by the MDH for tritium sampling and analysis. 7.5.7.5 Goals Achieved Obtaining data to evaluate if pathways that allow for relatively rapid movement of water from the surface to the source water aquifers are present. 37 37 Success criterion: Collection of groundwater samples from the selected City wells and analysis of these samples for tritium on the schedule outlined in section 7.5.7.3. 38 38 8.0 Evaluation Program Per Minnesota Rule 4720.5270, the progress in implementing a WHPP must be evaluated routinely to determine the effectiveness of the WHPP in terms of accomplishment of goals. Monitoring and evaluation measures to ensure effectiveness of the management strategies are detailed below. Evaluation activities discussed in this WHPP amendment include the following:  Track the implementation of the objectives, activities, and tasks discussed above in Section 7.0.  Determine the effectiveness of specific management strategies for the protection of the Prior Lake municipal water supply.  Identify possible changes to the management strategies to improve overall effectiveness.  Determine the adequacy of financial resources and staff availability to perform and implement the management strategies planned each year.  Update the WHPP if new wells are added to the municipal water supply system or new high capacity wells make it necessary to revise the WHPA/DWSMA boundaries. The City of Prior Lake will continue to cooperate with the MDH in the monitoring of the City’s municipal water supply to determine if the management strategies presented in this WHPP are having a positive effect on water quality and to identify any water quality problems that may arise and need to be addressed. The Prior Lake Wellhead Protection Manager will strive to provide a report to the City Council every two years that summarizes the progress in implementing the management strategies and objectives in this WHPP. The report will be completed using the MDH Wellhead Protection Program Evaluation form (Appendix E). The City will retain a copy of the report in its Wellhead Protection file and send a copy of the report to the MDH Source Water Protection Unit in St. Paul. The intent of the bi-annual reports is to compile a comprehensive review of the implementation of the source management strategies for use when the City updates or revises this WHPP. As specified by the Wellhead Protection Rules, this WHPP will be updated a minimum of every 10 years, or more often as required due to changes to the municipal water supply system. 39 39 9.0 Alternative Water Supply Contingency Strategy The purpose of a contingency plan is to establish, provide, and keep updated certain emergency response procedures and information for the public water supply, which may become vital in the event of a partial or total loss of public water supply services as a result of natural disaster, chemical contamination, civil disorder, or human-caused disruptions. The City’s procedures for responding to water emergencies and the City’s water conservation plan are presented in the City’s 2006 Water Emergency and Conservation Plan. As required, the Water Emergency and Conservation Plan was submitted to the MDNR Division of Waters – Appropriation Permit Program and the Metropolitan Council for review and approval. The MDNR approval letter for the Water Emergency and Conservation Plan is dated YYYYYYYYY. The City Council adopted the Water Emergency and Conservation Plan on ZZZZZZZZ and the MDNR recorded the Water Emergency and Conservation Plan Certificate of Adoption as being completed on WWWWWW. A copy of the Water Emergency and Conservation Plan, the MDNR approval letter, and the Certificate of Adoption are presented in Appendix F. A copy of the Water Emergency and Conservation Plan can also be obtained from the City upon request. Commented [JG4]: NOTE TO CITY REVIEWERS: Please provide the correct dates for the highlighted items. A copy of the 2006 Water Emergency and Conservation Plan is presented in Appendix F. Please provide copies of the DNR approval letter and the certificate of adoption for inclusion in Appendix F. 40 40 10.0 References Barr Engineering Company (Barr), 2016. City of Prior Lake Wellhead Protection Plan Amendment – Part 1: Delineation of the Wellhead Protection Area (WHPA), Drinking Water Supply Management Area (DWSMA) and Assessments of Well and DWSMA Vulnerability, prepared for the City of Prior Lake, July 2016. Prior Lake, 2005. City of Prior Lake Draft 2030 Comprehensive Plan, prepared by Prior Lake Planning Commission, adopted by the Prior Lake City Council on May 2, 2005. Mazor, E. 2004. Chemical and Isotopic Groundwater Hydrology, 3rd ed., New York: Marcel Dekker Inc. Metropolitan Council, 2015a. Prior Lake Water Supply Profile in Appendix 1 of Master Water Supply Plan, September 23, 2015. Metropolitan Council, 2015b. 2015 System Statement – City of Prior Lake, issued September 17, 2015. Minnesota Department of Health (MDH), 2015. Scoping Decision Notice No. 1 for the City of Prior Lake, PWSID 1700007, for Amending the Wellhead Protection Plan, Letter from John Woodside of the MDH to Katheryn A. Gehler of the City of Prior Lake, March 5, 2015. Minnesota Department of Health (MDH), 2016a. Letter from James R. Lundy of the MDH to Katy A. Gehler of the City of Prior Lake approving the Part 1 Wellhead Protection Plan Amendment, dated September 14, 2016. Minnesota Department of Health (MDH), 2017. Scoping 2 Decision Notice and Meeting Summary – City of Prior Lake – PWSID 1 700007, letter from Karen S. Voz of the MDH to Katy A. Gehler of the City of Prior Lake, January 24, 2017. Tables Table 1 Municipal Well Construction Summary City of Prior Lake WHPP Amendment Local Well ID Unique Number Use/ Status1 Casing Diameter (in.) Casing Depth (ft.) Well Depth (ft.) Year Constructed Aquifer Well Vulnerability 3 207308 P 24 x 16 268 364 1973 CJDN Vulnerable 4 110452 P 24 x 16 264 345 1975 CJDN Vulnerable 5 420954 P 30 x 24 x 18 290 372 1988 CJDN Vulnerable 6 603083 P 36 x 30 x 24 318 410 2001 CJDN Not Vulnerable 7 655913 P 18 x 12 x 82 4303 640 2003 CTCW Not Vulnerable 8 686263 P 30 x 24 305 402 2006 CJDN Vulnerable 9 686264 P 24 x 18 x 12 454 640 2007 CTCW Not Vulnerable 1 P = Primary Aquifer Codes: CTCW = Tunnel City Group-Wonewoc Sandstone CJDN = Jordan Sandstone Table 2 Annual Volume of Water Pumped City of Prior Lake WHPP Amendment Total Annual Withdrawal (gal/yr) Unique Number Well Name 2010 2011 2012 2013 2014 207308 3 207,429,000 194,671,000 233,053,000 91,802,000 110,642,000 110452 4 75,995,000 70,355,000 94,660,000 80,211,000 90,470,000 420954 5 99,117,000 109,014,000 129,497,000 189,365,000 114,147,000 603083 6 1,438,000 914,000 5,549,000 1,291,013 1,978,000 655913 7 83,762,000 86,429,000 102,560,000 49,856,000 0 686263 8 224,943,000 260,543,000 257,447,000 307,002,000 194,802,000 686264 9 78,017,000 89,665,000 87,068,000 100,344,000 66,973,000 Totals 770,701,000 811,591,000 909,834,000 819,871,013 579,012,000 Source: City water use records Table 3 Summary of Potential Sources of Contaminants and Assigned Management Priority City of Prior Lake WHPP Amendment Potential Contaminant Source Category Total Number in DWSMAs1 Number Within IWMZ and Priority Assigned Number Within ERZ and Priority Assigned Number Within Remainder of the DWSMAs and Priority Assigned Chemical Storage Sites 3 MVZ – 13 (Mod.) HVZ – 0 MVZ – 0 HVZ – 0 MVZ – 0 HVZ – 2 (Mod.) Hazardous Waste Generator Sites 2 HVZ – 0 HVZ – 0 HVZ – 2 (Mod.) Cemeteries 1 HVZ – 0 HVZ – 1 (Low) HVZ – 0 Leaking Tank Sites Closed 1 MVZ – 0 HVZ – 0 MVZ – 0 HVZ – 0 MVZ – 0 HVZ – 1 (Low) Registered Storage Tank Sites Status = Active 3 MVZ – 0 HVZ – 0 MVZ – 1 (Mod.) HVZ – 0 MVZ – 1 (Mod.) HVZ – 1 (Mod.) Status = Inactive or Unknown 1 MVZ – 0 HVZ – 0 MVZ – 0 HVZ – 0 MVZ – 0 HVZ – 1 (Low) Wells (status = Active, Inactive, or Unknown) Completed in a source water aquifer 4 LVZ – 0 MVZ – 13 (Mod.) HVZ – 14 (Low) LVZ – 0 MVZ – 0 HVZ – 0 LVZ – 1 (High) MVZ – 1 (High) HVZ – 0 Not completed in or penetrating source water aquifer 39 LVZ – 0 MVZ – 0 HVZ – 0 LVZ – 0 MVZ – 0 HVZ – 1 (Mod.) LVZ – 33 (Mod.) MVZ – 3 (Mod.) HVZ – 2 (Mod.) Potential Class V Wells 9 LVZ – 0 MVZ – 0 HVZ – 0 LVZ – 0 MVZ – 0 HVZ – 0 LVZ – 8 (Low) MVZ – 1 (Mod.) HVZ - 0 SSTS Properties 1 HVZ – 0 HVZ – 0 HVZ – 1 (Mod.) HVZ High aquifer vulnerability zone MVZ Moderate aquifer vulnerability zone LVZ Low aquifer vulnerability zone ERZ Emergency Response Zone: defined as portion of the WHPA within the 1-year groundwater time of travel area. IWMZ Inner Wellhead Management Zone: defined in MR4720.5100 subpart 19 as the area within 200 feet of a public water supply well. 1 Total number of each potential contaminant source type identified during the PCSI. 2 Total number does not include the seven Prior Lake municipal water supply wells. 3 Site is under City control so priority is set as moderate. 4 Well was the pilot hole for Prior Lake Well 7 and, therefore, priority is set as low. Table 4 High Capacity Wells Within One Mile of the DWSMAs City of Prior Lake WHPP Amendment PCSI ID Unique ID Status Permittee Use Aquifer Permitted Volume MGY 3 207308 Active Prior Lake, City Of Municipal/Public Water Supply CJDN 900 4 110452 Active Prior Lake, City Of Municipal/Public Water Supply CJDN 900 5 420954 Active Prior Lake, City Of Municipal/Public Water Supply CJDN 900 6 603083 Active Prior Lake, City Of Municipal/Public Water Supply CJDN 900 7 655913 Active Prior Lake, City Of Municipal/Public Water Supply CTCW 900 8 686263 Active Prior Lake, City Of Municipal/Public Water Supply OPDC 900 9 686264 Active Prior Lake, City Of Municipal/Public Water Supply OPDC 900 208833 208833 Active Cleary Lake Golf Course Basin (Lake) Level Maintenance CJDN 33 208833 208833 Active Cleary Lake Golf Course Golf Course Irrigation CJDN 33 253021 253021 Active Shakopee Mdewakanton Sioux Community Public Supply/Non-Community CTCW Not Available 525938 525938 Active Shakopee Mdewakanton Sioux Community Public Supply/Non-Community CJDN Not Available 723530 723530 Active Shakopee Mdewakanton Sioux Community Public Supply/Non-Community CJDN Not Available PCSI ID refers to Figure 4 Aquifer/Formation Codes: CJDN = Jordan Sandstone CTCW = Tunnel City Group-Wonewoc Sandstone OPDC = Prairie du Chien Group Figures !H !H !H !H !H !H !H 47 9 5 8 3 6 Markley Cate'sor Hidden Rice Keup's Buck Lower Prior Cleary Spring Little Prior Upper Prior Crystal Arctic Blind ¨©87 ¨©81 456712 456744 456782 456783 456723 456721 456721 13 13 SavageCentralDWSMA ShakopeeDWSMA ShakopeeDWSMA Prior Lake Savage Ba r r F o o t e r : A r c G I S 1 0 . 4 . 1 , 2 0 1 7 - 0 7 - 2 4 1 7 : 4 3 F i l e : I : \ P r o j e c t s \ 2 3 \ 7 0 \ 1 0 5 6 \ M a p s \ R e p o r t s \ W H P P I I _ 2 0 1 7 \ F i g 0 1 D W S M A L o c a t i o n . m x d U s e r : j j l 2 MUNICIPAL WELLS, DWSMAs,AND AQUIFER VULNERABILITYPart 2 WHPP AmendmentCity of Prior LakeScott County, MN FIGURE 1 0 875 1,750 Feet !;N !H Municipal Well Municipal Boundary Prior Lake DWSMA Nearby DWSMAs DWSMA Vulnerability High Moderate Low FEMA Flood Zone 0.2% Annual ChanceFlood Hazard A AE X 3 - Municipal Well Location PCSI ID(PCSI ID refers to Table C-3) Image Source: FSA (2015) A - Areas with a 1% annual chance of flooding and a 26% chanceof flooding over the life of a 30-year mortgage. Because detailedanalyses are not performed for such areas; no depths or base floodelevations are shown within these zones. AE - The base floodplain where base flood elevations are provided.AE Zones are now used on new format FIRMs instead of A1-A30Zones. X - Area of minimal flood hazard, usually depicted on FIRMs as abovethe 500-year flood level. Zone C may have ponding and localdrainage problems that don't warrant a detailed study ordesignation as base floodplain. Zone X is the area determinedto be outside the 500-year flood and protected by levee from100-year flood. DR A F T !H !H !H !H !H !H !H 47 9 5 8 3 6 Markley Cate'sor Hidden Rice Keup's Buck Lower Prior Cleary Cleary Spring Little Prior Upper Prior Crystal ¨©87 ¨©81 456712 456744 456782 456783 456723 456721 13 13 Prior Lake Savage Ba r r F o o t e r : A r c G I S 1 0 . 4 . 1 , 2 0 1 7 - 0 7 - 2 1 1 8 : 5 1 F i l e : I : \ P r o j e c t s \ 2 3 \ 7 0 \ 1 0 5 6 \ M a p s \ R e p o r t s \ W H P P I I _ 2 0 1 7 \ F i g 0 2 C u r r e n t L a n d U s e - C h a r t . m x d U s e r : j j l 2 CURRENT LAND USEPart 2 WHPP AmendmentCity of Prior LakeScott County, MN FIGURE 2 0 875 1,750 Feet !;N !H Municipal Well Municipal Boundary Prior Lake DWSMA Current Land Use* Farmstead Single Family Detached Single Family Attached Multifamily Retail and Other Commercial Office Industrial and Utility Institutional Park, Recreational or Preserve Golf Course Agricultural Undeveloped Water * Land Use Data (Met Council2010 Generalized Land Use) 3 - Municipal Well Location PCSI ID(PCSI ID refers to Table C-3) DR A F T !H !H !H !H !H !H !H 47 9 5 8 3 6 Markley Cate'sor Hidden Rice Keup's Buck Lower Prior Cleary Cleary Spring Little Prior Upper Prior Crystal ¨©87 ¨©81 456712 456744 456782 456783 456723 456721 13 13 Prior Lake Savage Ba r r F o o t e r : A r c G I S 1 0 . 4 . 1 , 2 0 1 7 - 0 7 - 2 1 1 8 : 5 1 F i l e : I : \ P r o j e c t s \ 2 3 \ 7 0 \ 1 0 5 6 \ M a p s \ R e p o r t s \ W H P P I I _ 2 0 1 7 \ F i g 0 3 P l a n n e d F u t u r e L a n d U s e . m x d U s e r : j j l 2 PLANNED FUTURELAND USEPart 2 WHPP AmendmentCity of Prior LakeScott County, MN FIGURE 3 0 875 1,750 Feet !;N !H Municipal Well Municipal Boundary Prior Lake DWSMA Planned Future Land Use* Agricultural Rural or Large-Lot Residential Single Family Residential Multifamily Residential Commercial Industrial Institutional Mixed Use Park and Recreation Vacant or Unknown Open Water * Land Use Data (Met Council 2030Generalized Interpreted Land Use) 3 - Municipal Well Location PCSI ID(PCSI ID refers to Table C-3) DR A F T !P !P !P !P !P !P!P !P!P !P!P!P 3 4 5 6 7 8 9 208833 525938 253021 723530 Markley Cate's orHidden Rice Keup's Buck Lower Prior Lower Prior Howard Howard Cleary Cleary Spring Little Prior Upper Prior Crystal ¨©87 ¨©81 456744 456712 456721 456782 456783 456723 456721 456727 13 13 Prior Lake Savage Shakopee Ba r r F o o t e r : A r c G I S 1 0 . 4 . 1 , 2 0 1 7 - 0 7 - 2 5 1 7 : 5 7 F i l e : I : \ P r o j e c t s \ 2 3 \ 7 0 \ 1 0 5 6 \ M a p s \ R e p o r t s \ W H P P I I _ 2 0 1 7 \ F i g 0 4 H i g h C a p a c i t y W e l l s w i t h i n 1 M i l e o f t h e D W S M A . m x d U s e r : j j l 2 HIGH CAPACITY WELLS WITHIN ONE MILE OF THE DWSMAs Part 2 WHPP Amendment City of Prior LakeScott County, MN FIGURE 4 0 875 1,750 Feet !;N Permitted WaterAppropriations (MPARS)Within 1 Mile of DWSMA !P Basin (Lake)Level Maintenance !P Golf CourseIrrigation !P Municipal/PublicWater Supply !P Public Supply/Non-Community Municipal Boundary Prior Lake DWSMA DWSMA Vulnerability High Moderate Low 3 - MPARS Location PCSI ID(PCSI ID refers to Table C-10) DR A F T Appendix A MDH Well Records MINNESOTA DEPARTMENT OF HEALTH WELL AND BORING RECORD Minnesota Statutes Chapter 1031County Name Township Name Township Range Dir Section Subsection Well Head Completion Grouting Information Well Depth Depth Completed Date Well Completed Unique No. Nearest Known Source of Contamination Not Installed hrs. pumping Static Water Level ft. after From Casing Pump Well CONTRACTOR CERTIFICATION PUMPING LEVEL (below land surface) Drilling Method Well Hydrofractured? Screen Use Open Hole Make Any not in use and not sealed well(s) on property? Type 114 22 1 BDACBA 00207308 1973/04/14364 No ft. to 268 ft. to 364 45 g.p.m. Casing Protection Mfr nam Was a variance granted from the MDH for this Well? License Business Name At-grade(Environmental Wells and Borings ONLY) Pitless adapter mfr Yes No 27058 1973/04/14 ft. Yes NYes ft. from Date 12 in. above grade Model Well grouted? Well disinfected upon completion? Yes No ft. direction type Date Installed Volts0HPModel Drop Pipe Length g.p.m Yes Type No Update Date 2004/12/29 Entry Date 1989/12/28 364ft. ft. Drilling Fluid Capacity Drive Shoe? PRIOR LAKE 3Well Name ft. Scott W Community Supply (municipal) HE-01205-06 (Rev. 9/96) Name of Driller From ft. Report Copy Lic. Or Reg. No. N Land surface Hole Diameter NoYes Aquifer:CJDN Alt Id:75-6201 USGS Quad Prior Lake Elevation 918 GEOLOGICAL MATERIAL COLOR HARDNESS FROM TO 02DIRT BLACK 238SAND + GRAVEL 38 62 CLAY + FINE MIXED SAND BLUE 62 123 SHALE + FINE SAND + ROC YELLO 123 140 SHAKOPEE ROCK 140 263 SHAKOPEE ROCK 263 360 JORDAN SANDSTONE 360 364 SHALE GRY/G REMARKS, ELEVATION, SOURCE OF DATA, etc. M.G.S. NO. 891 Casing Diameter Weight(lbs/ft) 24 124in. t ft 16 268in. t ft Material From To (ft.) Amount(yds/bags) 0G40Y MINNESOTA DEPARTMENT OF HEALTH WELL AND BORING RECORD Minnesota Statutes Chapter 1031County Name Township Name Township Range Dir Section Subsection Well Depth Depth Completed Date Well Completed Unique No. 114 22 1 BDACBA 00207308 1973/04/14364 27058 Update Date 2004/12/29 Entry Date 1989/12/28 364ft. ft. PRIOR LAKE 3Well Name Scott W Name of DrillerLic. Or Reg. No. Prior LakeUSGS Quad 918Elevation GEOLOGICAL MATERIAL COLOR HARDNESS FROM TO STRAT LITH PRIM LITH SEC LITH MINOR CJDNAquifer 75-6201Alternative Id 02DIRT BLACK RUUK SOIL ORGD RUUK = Recent Deposit SOIL = Soil ORGD = Organic Deposits 238SAND + GRAVEL QHUU SAND GRVL QHUU = Sand & larger SAND = Sand GRVL = Gravel 38 62CLAY + FINE MIXED SAND BLUE QLUG CLAY SAND QLUG = Clay & sand CLAY = Clay SAND = Sand 62 123SHALE + FINE SAND + ROCKS YELLOW QPUY CLAY SAND BLDR QPUY = Pebbly sand/silt/clay CLAY = Clay SAND = Sand BLDR = Boulder 123 140SHAKOPEE ROCK OPDC DLMT OPDC = Prairie Du Chien Group DLMT = Dolomite 140 263SHAKOPEE ROCK OPDC DLMT OPDC = Prairie Du Chien Group DLMT = Dolomite 263 360JORDAN SANDSTONE CJDN SNDS CJDN = Jordan SNDS = Sandstone 360 364SHALE GRY/GRN CSTL SHLE SNDS CSTL = St.Lawrence SHLE = Shale SNDS = Sandstone MINNESOTA DEPARTMENT OF HEALTH WELL AND BORING RECORD Minnesota Statutes Chapter 1031County Name Township Name Township Range Dir Section Subsection Well Head Completion Grouting Information Well Depth Depth Completed Date Well Completed Unique No. Nearest Known Source of Contamination Not Installed hrs. pumping Static Water Level ft. after From Casing Pump Well CONTRACTOR CERTIFICATION PUMPING LEVEL (below land surface) Drilling Method Well Hydrofractured? Screen Use Open Hole Make Any not in use and not sealed well(s) on property? Type 114 22 1 BDADBB 00110452 1975/07/18345 No ft. to 264 ft. to 345 0 75 24 1500 g.p.m. Casing Protection Mfr nam Was a variance granted from the MDH for this Well? License Business Name At-grade(Environmental Wells and Borings ONLY) Pitless adapter mfr Yes No 27010 SCHMIDT, C. 1975/07/18 ft. Yes NYes ft. from Date 12 in. above grade Model Well grouted? Well disinfected upon completion? Yes No N ft. direction type Date Installed Volts0HPModel Drop Pipe Length g.p.m Yes Type No Update Date 2004/12/29 Entry Date 1989/12/28 345ft. ft. Drilling Fluid Capacity Drive Shoe? PRIOR LAKE 4Well Name ft. Scott W Cable Tool Community Supply (municipal) HE-01205-06 (Rev. 9/96) Name of Driller From ft. Report Copy Lic. Or Reg. No. N Land surface Hole Diameter NoYes Aquifer:CJDN Alt Id:75-6201 USGS Quad Prior Lake Elevation 915 CITY OF PRIOR LAKE PRIOR LAKE MN Contact's Name GEOLOGICAL MATERIAL COLOR HARDNESS FROM TO 010SURFACE TILL BLACK 10 105 SAND + GRAVEL BROW 105 257 SHAKOPEE LIMEROCK 257 340 JORDAN SANDSTONE 340 345 ST. LAWRENCE SHALE REMARKS, ELEVATION, SOURCE OF DATA, etc. M.G.S. NO. 1033 1500' E. OF 9TH AVE. & SUMMER ST. Casing Diameter Weight(lbs/ft) 24 113in. t ft 94.6 16 264in. t ft 62.6 Material From To (ft.) Amount(yds/bags) 0 264G20Y MINNESOTA DEPARTMENT OF HEALTH WELL AND BORING RECORD Minnesota Statutes Chapter 1031County Name Township Name Township Range Dir Section Subsection Well Depth Depth Completed Date Well Completed Unique No. 114 22 1 BDADBB 00110452 1975/07/18345 27010 SCHMIDT, C. Update Date 2004/12/29 Entry Date 1989/12/28 345ft. ft. PRIOR LAKE 4Well Name Scott W Name of DrillerLic. Or Reg. No. Prior LakeUSGS Quad 915Elevation GEOLOGICAL MATERIAL COLOR HARDNESS FROM TO STRAT LITH PRIM LITH SEC LITH MINOR CJDNAquifer 75-6201Alternative Id 010SURFACE TILL BLACK QTUK TILL ORGD QTUK = Till TILL = Till,tillite ORGD = Organic Deposits 10 105SAND + GRAVEL BROWN QHUB SAND GRVL QHUB = Sand & larger SAND = Sand GRVL = Gravel 105 257SHAKOPEE LIMEROCK OPDC DLMT OPDC = Prairie Du Chien Group DLMT = Dolomite 257 340JORDAN SANDSTONE CJDN SNDS CJDN = Jordan SNDS = Sandstone 340 345ST. LAWRENCE SHALE CSTL SHLE CSTL = St.Lawrence SHLE = Shale MINNESOTA DEPARTMENT OF HEALTH WELL AND BORING RECORD Minnesota Statutes Chapter 1031County Name Township Name Township Range Dir Section Subsection Well Head Completion Grouting Information Well Depth Depth Completed Date Well Completed Unique No. Nearest Known Source of Contamination Not Installed hrs. pumping Static Water Level ft. after From Casing Pump Well CONTRACTOR CERTIFICATION PUMPING LEVEL (below land surface) Drilling Method Well Hydrofractured? Screen Use Open Hole Make Any not in use and not sealed well(s) on property? Type 114 22 1 BADAAB 00420954 1988/04/06372 No ft. to 290 ft. to 372 68 g.p.m. Casing Protection Mfr nam Was a variance granted from the MDH for this Well? License Business Name At-grade(Environmental Wells and Borings ONLY) Pitless adapter mfr Yes No 27010 SCHMIDT, C. 1988/04/06 ft. Yes NYes ft. from Date 12 in. above grade Model Well grouted? Well disinfected upon completion? Yes No N ft. direction type Date Installed VoltsHPModel Drop Pipe Length g.p.m Yes Type No Update Date 2004/12/29 Entry Date 1989/05/05 372ft. ft. Drilling Fluid Capacity Drive Shoe? PRIOR LAKE 5Well Name ft. Scott W Cable Tool Community Supply (municipal) HE-01205-06 (Rev. 9/96) Name of Driller From ft. Report Copy Lic. Or Reg. No. N Land surface Hole Diameter NoYes Aquifer:CJDN Alt Id:75-6201 USGS Quad Prior Lake Elevation 928 PRIOR LAKE 5 PRIOR LAKE MN Contact's Name GEOLOGICAL MATERIAL COLOR HARDNESS FROM TO 060MEDIUM SAND BROW 60 140 GRAVEL BROW 140 147 BROKEN LIMESTONE + SH BROW 147 284 SHAKOPEE TAN 284 372 JORDAN SANDSTONE WHITE REMARKS, ELEVATION, SOURCE OF DATA, etc. ON BOUNTY ST. , 3 BLKS E. OF FRANKLIN TRAIL. Casing Diameter Weight(lbs/ft) 30 58in. t ft 24 148in. t ft 18 290in. t ft Material From To (ft.) Amount(yds/bags) 0 290G43Y MINNESOTA DEPARTMENT OF HEALTH WELL AND BORING RECORD Minnesota Statutes Chapter 1031County Name Township Name Township Range Dir Section Subsection Well Depth Depth Completed Date Well Completed Unique No. 114 22 1 BADAAB 00420954 1988/04/06372 27010 SCHMIDT, C. Update Date 2004/12/29 Entry Date 1989/05/05 372ft. ft. PRIOR LAKE 5Well Name Scott W Name of DrillerLic. Or Reg. No. Prior LakeUSGS Quad 928Elevation GEOLOGICAL MATERIAL COLOR HARDNESS FROM TO STRAT LITH PRIM LITH SEC LITH MINOR CJDNAquifer 75-6201Alternative Id 060MEDIUM SAND BROWN QFUB SAND QFUB = Sand SAND = Sand 60 140GRAVEL BROWN QGUB GRVL QGUB = Gravel (+larger)GRVL = Gravel 140 147BROKEN LIMESTONE + SHALE BROWN QPUB BLDR CLAY QPUB = Pebbly sand/silt/clay BLDR = Boulder CLAY = Clay 147 284SHAKOPEE TAN OPDC DLMT OPDC = Prairie Du Chien Group DLMT = Dolomite 284 372JORDAN SANDSTONE WHITE CJDN SNDS CJDN = Jordan SNDS = Sandstone MINNESOTA DEPARTMENT OF HEALTH WELL AND BORING RECORD Minnesota Statutes Chapter 1031County Name Township Name Township Range Dir Section Subsection Well Head Completion Grouting Information Well Depth Depth Completed Date Well Completed Unique No. Nearest Known Source of Contamination Not Installed hrs. pumping Static Water Level ft. after From Casing Pump Well CONTRACTOR CERTIFICATION PUMPING LEVEL (below land surface) Drilling Method Well Hydrofractured? Screen Use Open Hole Make Any not in use and not sealed well(s) on property? Type Water 115 22 34 BCABBA 00603083 2001/08/17410 No ft. to 318 ft. to 410 190 217 6 1200 g.p.m. Casing Protection Mfr nam Was a variance granted from the MDH for this Well? License Business Name At-grade(Environmental Wells and Borings ONLY) Pitless adapter mfr Yes No 62012 SAMPSON, J. 2001/08/09 ft. Yes NYes ft. from Date 12 in. above grade Model Well grouted? Well disinfected upon completion? Yes No 100 N ft. direction type Date Installed VoltsHPModel Drop Pipe Length g.p.m Yes Type No Update Date 2004/12/30 Entry Date 2001/10/30 410ft. ft. Drilling Fluid Capacity Drive Shoe? PRIOR LAKE 6Well Name ft. Scott W Cable Tool Community Supply (municipal) HE-01205-06 (Rev. 9/96) Name of Driller Y From ft. Report Copy Lic. Or Reg. No. SDFW N Land surface Hole Diameter NoYes Aquifer:CJDN Alt Id:4103 USGS Quad Prior Lake Elevation 971 100in. t ft 410in. t ft PRIOR LAKE 6 15248 WILDS PK PRIOR LAKE MN 55372 Well Owner's Name CITY OF PRIOR LAKE 16200 EAGLE CREEK SE AV PRIOR LAKE MN 55372 Contact's Name GEOLOGICAL MATERIAL COLOR HARDNESS FROM TO SOFT 0 203 DRIFT BROW SOFT 203 207 DRIFT BROW HARD 207 237 LIMESTONE- BROKEN YELLO HARD 237 299 LIMESTONE TAN HARD 299 303 LIMESTONE TAN MEDIUM 303 318 SHALEY SANDSTONE BROW MEDIUM 318 400 SANDSTONE YELLO MEDIUM 400 402 SHALE BLUE MEDIUM 402 410 SHALE BLUE REMARKS, ELEVATION, SOURCE OF DATA, etc. GAMMA LOGGED 8-23-2001. M.G.S. NO. 4103. Casing Diameter Weight(lbs/ft) 36 100in. t ft 142.68 30 237in. t ft 118.65 24 318in. t ft 94.62 Material From To (ft.) Amount(yds/bags) 0 100G17Y 0 318G25Y MINNESOTA DEPARTMENT OF HEALTH WELL AND BORING RECORD Minnesota Statutes Chapter 1031County Name Township Name Township Range Dir Section Subsection Well Depth Depth Completed Date Well Completed Unique No. 115 22 34 BCABBA 00603083 2001/08/17410 62012 SAMPSON, J. Update Date 2004/12/30 Entry Date 2001/10/30 410ft. ft. PRIOR LAKE 6Well Name Scott W Name of DrillerLic. Or Reg. No. Prior LakeUSGS Quad 971Elevation GEOLOGICAL MATERIAL COLOR HARDNESS FROM TO STRAT LITH PRIM LITH SEC LITH MINOR CJDNAquifer 4103Alternative Id SOFT 0 203DRIFT BROWN QUUB DRFT QUUB = Unknown deposit type DRFT = Drift SOFT 203 207DRIFT BROWN OPDC DLMT OPDC = Prairie Du Chien Group DLMT = Dolomite HARD 207 237LIMESTONE- BROKEN YELLOW OPDC DLMT OPDC = Prairie Du Chien Group DLMT = Dolomite HARD 237 299LIMESTONE TAN OPDC DLMT OPDC = Prairie Du Chien Group DLMT = Dolomite HARD 299 303LIMESTONE TAN CJDN SNDS CJDN = Jordan SNDS = Sandstone MEDIUM 303 318SHALEY SANDSTONE BROWN CJDN SNDS CJDN = Jordan SNDS = Sandstone MEDIUM 318 400SANDSTONE YELLOW CJDN SNDS CJDN = Jordan SNDS = Sandstone MEDIUM 400 402SHALE BLUE CJDN SNDS CJDN = Jordan SNDS = Sandstone MEDIUM 402 410SHALE BLUE CSTL SLSN DLMT CSTL = St.Lawrence SLSN = Siltstone DLMT = Dolomite MINNESOTA DEPARTMENT OF HEALTH WELL AND BORING RECORD Minnesota Statutes Chapter 1031County Name Township Name Township Range Dir Section Subsection Well Head Completion Grouting Information Well Depth Depth Completed Date Well Completed Unique No. Nearest Known Source of Contamination Not Installed hrs. pumping Static Water Level ft. after From Casing Pump Well CONTRACTOR CERTIFICATION PUMPING LEVEL (below land surface) Drilling Method Well Hydrofractured? Screen Use Open Hole Make Any not in use and not sealed well(s) on property? Type Water 114 22 1 BDACBC 00655913 2003/06/00640 No ft. to 415 ft. to 640 62 126 20 450 g.p.m. Casing Protection Mfr nam Was a variance granted from the MDH for this Well? License Business Name At-grade(Environmental Wells and Borings ONLY) Pitless adapter mfr Yes No 62012 ALLAN, J. 2003/04/14 ft. Yes NYes ft. from Date 12 in. above grade Model Well grouted? Well disinfected upon completion? Yes No 8PS1214WB 250 ft. direction type Date Installed Volts GOULDS 609RCLC HPModel Drop Pipe Length 460 g.p.m180 Yes Type No Update Date 2011/04/05 Entry Date 640ft. ft. Drilling Fluid Capacity 450 Drive Shoe? PRIOR LAKE 7Well Name ft. Scott W Cable Tool Community Supply (municipal) HE-01205-06 (Rev. 9/96) Name of Driller S From ft. Report Copy Lic. Or Reg. No. SDFSW N Hole Diameter NoYes Aquifer:CFIG Alt Id:4237 USGS Quad Prior Lake Elevation 915 415in. t ft 640in. t ft PRIOR LAKE 7 16341 ITASCA SE AV PRIOR LAKE MN Well Owner's Name CITY OF PRIOR LAKE 17073 ADELMANN SE ST PRIOR LAKE MN 55372 Contact's Name GEOLOGICAL MATERIAL COLOR HARDNESS FROM TO SOFT 0 58 SAND, GRAVEL, CLAY BROW MEDIUM 58 64 GRAVEL BLACK SOFT 64 125 SAND & GRAVEL BROW HARD 125 263 LIMESTONE YELLO MEDIUM 263 364 SANDSTONE BROW MEDIUM 364 405 SHALE BLUE MEDIUM 405 420 SANDSTONE GRAY MEDIUM 420 557 SANDSTONE GRAY MEDIUM 557 640 SANDSTONE GRAY REMARKS, ELEVATION, SOURCE OF DATA, etc. GAMMA LOGGED 5-28-2003. M.G.S. NO. 4237. LOGGED BY JIM TRAEN. Casing Diameter Weight(lbs/ft) 18 131in. t ft 12 415in. t ft Material From To (ft.) Amount(yds/bags) 0 415G42Y MINNESOTA DEPARTMENT OF HEALTH WELL AND BORING RECORD Minnesota Statutes Chapter 1031County Name Township Name Township Range Dir Section Subsection Well Depth Depth Completed Date Well Completed Unique No. 114 22 1 BDACBC 00655913 2003/06/00640 62012 ALLAN, J. Update Date 2011/04/05 Entry Date 640ft. ft. PRIOR LAKE 7Well Name Scott W Name of DrillerLic. Or Reg. No. Prior LakeUSGS Quad 915Elevation GEOLOGICAL MATERIAL COLOR HARDNESS FROM TO STRAT LITH PRIM LITH SEC LITH MINOR CFIGAquifer 4237Alternative Id SOFT 0 58SAND, GRAVEL, CLAY BROWN QPUB SAND GRVL CLAY QPUB = Pebbly sand/silt/clay SAND = Sand GRVL = Gravel CLAY = Clay MEDIUM 58 64GRAVEL BLACK QGUK GRVL QGUK = Gravel (+larger)GRVL = Gravel SOFT 64 125SAND & GRAVEL BROWN QHUB SAND GRVL QHUB = Sand & larger SAND = Sand GRVL = Gravel HARD 125 263LIMESTONE YELLOW OPDC DLMT OPDC = Prairie Du Chien Group DLMT = Dolomite MEDIUM 263 364SANDSTONE BROWN CJDN SNDS CJDN = Jordan SNDS = Sandstone MEDIUM 364 405SHALE BLUE CSTL SLSN DLMT CSTL = St.Lawrence SLSN = Siltstone DLMT = Dolomite MEDIUM 405 420SANDSTONE GRAY CSTL SLSN DLMT CSTL = St.Lawrence SLSN = Siltstone DLMT = Dolomite MEDIUM 420 557SANDSTONE GRAY CFRN SNDS SHLE DLMT CFRN = Franconia SNDS = Sandstone SHLE = Shale DLMT = Dolomite MEDIUM 557 640SANDSTONE GRAY CIGL SNDS CIGL = Ironton-Galesville SNDS = Sandstone MINNESOTA DEPARTMENT OF HEALTH WELL AND BORING RECORD Minnesota Statutes Chapter 1031County Name Township Name Township Range Dir Section Subsection Well Head Completion Grouting Information Well Depth Depth Completed Date Well Completed Unique No. Nearest Known Source of Contamination Not Installed hrs. pumping Static Water Level ft. after From Casing Pump Well CONTRACTOR CERTIFICATION PUMPING LEVEL (below land surface) Drilling Method Well Hydrofractured? Screen Use Open Hole Make Any not in use and not sealed well(s) on property? Type 114 22 1 DCCDAC 00686263 2006/06/26402 No ft. to 305 ft. to 402 76 113 8 1400 g.p.m. Casing Protection Mfr nam Was a variance granted from the MDH for this Well? License Business Name At-grade(Environmental Wells and Borings ONLY) Pitless adapter mfr Yes No 1347 GALVIN, M. 2006/06/06 ft. Yes NYes ft. from Date 12 in. above grade Model Well grouted? Well disinfected upon completion? Yes No 200 N ft. direction type Date Installed VoltsHPModel Drop Pipe Length g.p.m Yes Type No Update Date 2007/10/15 Entry Date 2005/12/20 402ft. ft. Drilling Fluid Capacity Drive Shoe? PRIOR LAKE 8Well Name ft. Scott W Cable Tool Community Supply (municipal) HE-01205-06 (Rev. 9/96) Name of Driller From ft. Report Copy Lic. Or Reg. No. BOWW N Land surface Hole Diameter NoYes Aquifer:CJDN Alt Id:75-6201 USGS Quad Prior Lake Elevation 943 402in. t ft 210in. t ft PRIOR LAKE 8 17073 ADELMANN ST PRIOR LAKE MN 55372 Well Owner's Name CITY OF PRIOR LAKE 17073 ADELMANN ST PRIOR LAKE MN 55372 Contact's Name GEOLOGICAL MATERIAL COLOR HARDNESS FROM TO SOFT 0 122 CLAY, SAND, GRAVEL BROW SOFT 122 145 SAND TAN SOFT 145 147 SAND TAN MEDIUM 147 192 ROCKS, SAND, LIMESTONE TAN HARD 192 290 LIMESTONE TAN HARD 290 291 LIMESTONE TAN MEDIUM 291 392 SANDSTONE WHITE MEDIUM 392 398 SANDSTONE/SHALE GRAY MEDIUM 398 400 SHALE BLU/G MEDIUM 400 402 SHALE BLU/G REMARKS, ELEVATION, SOURCE OF DATA, etc. GAMMA LOGGED 5-23-2006 & 6-23-2006. M.G.S. NO. 4545. LOGGED BY JIM TRAEN. Casing Diameter Weight(lbs/ft) 30 210in. t ft 118.76 24 305in. t ft 94.71 Material From To (ft.) Amount(yds/bags) G MINNESOTA DEPARTMENT OF HEALTH WELL AND BORING RECORD Minnesota Statutes Chapter 1031County Name Township Name Township Range Dir Section Subsection Well Depth Depth Completed Date Well Completed Unique No. 114 22 1 DCCDAC 00686263 2006/06/26402 1347 GALVIN, M. Update Date 2007/10/15 Entry Date 2005/12/20 402ft. ft. PRIOR LAKE 8Well Name Scott W Name of DrillerLic. Or Reg. No. Prior LakeUSGS Quad 943Elevation GEOLOGICAL MATERIAL COLOR HARDNESS FROM TO STRAT LITH PRIM LITH SEC LITH MINOR CJDNAquifer 75-6201Alternative Id SOFT 0 122CLAY, SAND, GRAVEL BROWN QPUB CLAY SAND GRVL QPUB = Pebbly sand/silt/clay CLAY = Clay SAND = Sand GRVL = Gravel SOFT 122 145SAND TAN QFUB SAND QFUB = Sand SAND = Sand SOFT 145 147SAND TAN OPDC DLMT OPDC = Prairie Du Chien Group DLMT = Dolomite MEDIUM 147 192ROCKS, SAND, LIMESTONE TAN OPDC DLMT OPDC = Prairie Du Chien Group DLMT = Dolomite HARD 192 290LIMESTONE TAN OPDC DLMT OPDC = Prairie Du Chien Group DLMT = Dolomite HARD 290 291LIMESTONE TAN CJDN SNDS CJDN = Jordan SNDS = Sandstone MEDIUM 291 392SANDSTONE WHITE CJDN SNDS CJDN = Jordan SNDS = Sandstone MEDIUM 392 398SANDSTONE/SHALE GRAY CJDN SNDS SHLE CJDN = Jordan SNDS = Sandstone SHLE = Shale MEDIUM 398 400SHALE BLU/GRY CJDN SNDS JASP CJDN = Jordan SNDS = Sandstone JASP = Jasper MEDIUM 400 402SHALE BLU/GRY CSTL SLSN DLMT CSTL = St.Lawrence SLSN = Siltstone DLMT = Dolomite MINNESOTA DEPARTMENT OF HEALTH WELL AND BORING RECORD Minnesota Statutes Chapter 1031County Name Township Name Township Range Dir Section Subsection Well Head Completion Grouting Information Well Depth Depth Completed Date Well Completed Unique No. Nearest Known Source of Contamination Not Installed hrs. pumping Static Water Level ft. after From Casing Pump PUMPING LEVEL (below land surface) Drilling Method Well Hydrofractured? Screen Use Open Hole Make Any not in use and not sealed well(s) on property? Type 114 22 1 DCCDCA 00686264 2007/04/07640 No ft. to 454 ft. to 638 102 283 12 500 g.p.m. Casing Protection Mfr nam Was a variance granted from the MDH for this Well? At-grade(Environmental Wells and Borings ONLY) Pitless adapter mfr Yes No 2007/04/03 ft. Yes NYes ft. from Date 12 in. above grade Model Well grouted? Well disinfected upon completion? Yes No 100 N ft. direction type Date Installed VoltsHPModel Drop Pipe Length g.p.m Yes Type No Update Date 2011/09/19 Entry Date 2006/04/11 640ft. ft. Drilling Fluid Capacity Drive Shoe? PRIOR LAKE 9Well Name ft. Scott W Cable Tool Community Supply (municipal) Y From ft. BOWNE N Land surface Hole Diameter NoYes 405in. t ft 193in. t ft 638in. t ft PRIOR LAKE 1 ADELMANN SE ST COTTONWOOD LANE PRIOR LAKE MN 55372 Well Owner's Name CITY OF PRIOR LAKE 17073 ADELMANN SE ST PRIOR LAKE MN 55372 Contact's Name GEOLOGICAL MATERIAL COLOR HARDNESS FROM TO SOFT 0 25 DRIFT BROW HARD 25 38 BOULDERS, GRAVEL, CLAY GRAY SOFT 38 116 SAND, GRAVEL BROW SOFT 116 150 SAND-FINE BROW HARD 150 170 SHALE/LIMESTONE GRN/B HARD 170 175 SAND, GRAVEL, LIMESTON BROW MEDIUM 175 182 SAND,GRAVEL, CLAY BROW HARD 182 189 CLAY, LIMESTONE BROW HARD 189 202 LIME BROKEN BROW HARD 202 212 LIMESTONE/CLAY BROW HARD 212 293 LIMESTONE TAN MEDIUM 293 396 SANDSTONE TAN/W MEDIUM 396 405 SANDSTONE/SHALE BLU/G MED-HRD 405 444 SHALE TAN/G MEDIUM 444 485 SANDSTONE, SHALE GRY/G MEDIUM 485 525 SANDSTONE & SHALE LEN GRY/G MEDIUM 525 545 SANDSTONE & SHALE LAY GRY/G MED-HRD 545 585 SANDSTONE & SHALE GRY/G SFT-MED 585 587 SANDSTONE LT. GR SFT-MED 587 620 SANDSTONE LT. GR SFT-MED 620 625 SANDSTONE LT. GR SFT-MED 625 635 SANDSTONE LT. GR MEDIUM 635 638 SHALE GRAY REMARKS, ELEVATION, SOURCE OF DATA, etc. GAMMA LOGGED AND TV 4-2-2007. M.G.S. NO. 4678. LOGGED BY JIM TRAEN. FIRST PART OF THE WELL DRILLED BY KEYS WELL CO. NEED SAMPLES FROM KEYS. BOTTOM PART OF THE WELL DRILLED BY MARK J. TRAUT WELLS. THIS WELL MAY END UP WITH TWO UNIQUE NUMBERS. ORIGINALLY COMPLETED BY KEYS WELL CO. ON 10-12-2006. Casing Diameter Weight(lbs/ft) 24 193in. t ft 97.71 18 223in. t ft 70.65 12 454in. t ft 49.56 Material From To (ft.) Amount(yds/bags) 320G15Y 365 454G5Y Well CONTRACTOR CERTIFICATION License Business Name 1404 ED/BUTCH HE-01205-06 (Rev. 9/96) Name of DrillerReport Copy Lic. Or Reg. No.Aquifer:CFIG Alt Id:4578 USGS Quad Prior Lake Elevation 943 MINNESOTA DEPARTMENT OF HEALTH WELL AND BORING RECORD Minnesota Statutes Chapter 1031County Name Township Name Township Range Dir Section Subsection Well Depth Depth Completed Date Well Completed Unique No. 114 22 1 DCCDCA 00686264 2007/04/07640 1404 ED/BUTCH Update Date 2011/09/19 Entry Date 2006/04/11 640ft. ft. PRIOR LAKE 9Well Name Scott W Name of DrillerLic. Or Reg. No. Prior LakeUSGS Quad 943Elevation GEOLOGICAL MATERIAL COLOR HARDNESS FROM TO STRAT LITH PRIM LITH SEC LITH MINOR CFIGAquifer 4578Alternative Id SOFT 0 25DRIFT BROWN QUUB DRFT QUUB = Unknown deposit type DRFT = Drift HARD 25 38BOULDERS, GRAVEL, CLAY GRAY QPUG BLDR GRVL CLAY QPUG = Pebbly sand/silt/clay BLDR = Boulder GRVL = Gravel CLAY = Clay SOFT 38 116SAND, GRAVEL BROWN QHUB SAND QHUB = Sand & larger SAND = Sand SOFT 116 150SAND-FINE BROWN QFUB SAND QFUB = Sand SAND = Sand HARD 150 170SHALE/LIMESTONE GRN/BRN OPDC DLMT OPDC = Prairie Du Chien Group DLMT = Dolomite HARD 170 175SAND, GRAVEL, LIMESTONE BROWN OPDC DLMT OPDC = Prairie Du Chien Group DLMT = Dolomite MEDIUM 175 182SAND,GRAVEL, CLAY BROWN OPDC CRVC OPDC = Prairie Du Chien Group CRVC = Crevice HARD 182 189CLAY, LIMESTONE BROWN OPDC DLMT SHLE OPDC = Prairie Du Chien Group DLMT = Dolomite SHLE = Shale HARD 189 202LIME BROKEN BROWN OPDC DLMT OPDC = Prairie Du Chien Group DLMT = Dolomite HARD 202 212LIMESTONE/CLAY BROWN OPDC DLMT SHLE OPDC = Prairie Du Chien Group DLMT = Dolomite SHLE = Shale HARD 212 293LIMESTONE TAN OPDC DLMT OPDC = Prairie Du Chien Group DLMT = Dolomite MEDIUM 293 396SANDSTONE TAN/WHT CJDN SNDS CJDN = Jordan SNDS = Sandstone MEDIUM 396 405SANDSTONE/SHALE BLU/GRN CSTL SLSN DLMT CSTL = St.Lawrence SLSN = Siltstone DLMT = Dolomite MED-HRD 405 444SHALE TAN/GRN CSTL SLSN DLMT CSTL = St.Lawrence SLSN = Siltstone DLMT = Dolomite MINNESOTA DEPARTMENT OF HEALTH WELL AND BORING RECORD Minnesota Statutes Chapter 1031County Name Township Name Township Range Dir Section Subsection Well Depth Depth Completed Date Well Completed Unique No. 114 22 1 DCCDCA 00686264 2007/04/07640 1404 ED/BUTCH Update Date 2011/09/19 Entry Date 2006/04/11 640ft. ft. PRIOR LAKE 9Well Name Scott W Name of DrillerLic. Or Reg. No. Prior LakeUSGS Quad 943Elevation GEOLOGICAL MATERIAL COLOR HARDNESS FROM TO STRAT LITH PRIM LITH SEC LITH MINOR CFIGAquifer 4578Alternative Id MEDIUM 444 485SANDSTONE, SHALE GRY/GRN CFRN SNDS SHLE DLMT CFRN = Franconia SNDS = Sandstone SHLE = Shale DLMT = Dolomite MEDIUM 485 525SANDSTONE & SHALE LENSES GRY/GRN CFRN SNDS SHLE DLMT CFRN = Franconia SNDS = Sandstone SHLE = Shale DLMT = Dolomite MEDIUM 525 545SANDSTONE & SHALE LAYERS GRY/GRN CFRN SNDS SHLE DLMT CFRN = Franconia SNDS = Sandstone SHLE = Shale DLMT = Dolomite MED-HRD 545 585SANDSTONE & SHALE GRY/GRN CFRN SNDS SHLE DLMT CFRN = Franconia SNDS = Sandstone SHLE = Shale DLMT = Dolomite SFT-MED 585 587SANDSTONE LT. GRY CFRN SNDS SHLE DLMT CFRN = Franconia SNDS = Sandstone SHLE = Shale DLMT = Dolomite SFT-MED 587 620SANDSTONE LT. GRY CIGL SNDS CIGL = Ironton-Galesville SNDS = Sandstone SFT-MED 620 625SANDSTONE LT. GRY CIGL SNDS CIGL = Ironton-Galesville SNDS = Sandstone SFT-MED 625 635SANDSTONE LT. GRY CIGL SNDS CIGL = Ironton-Galesville SNDS = Sandstone MEDIUM 635 638SHALE GRAY CIGL SNDS CIGL = Ironton-Galesville SNDS = Sandstone Appendix C Data Elements Assessment P:\Mpls\23 MN\70\23701056 WHPP Amendment\WorkFiles\Part 2 WHPP Amendment\Work Files\Appendices\Appendix C Data Elements Assessment\DRAFT Prior Lake Appendix C Data Elements Assessment.docx i Appendix C Data Elements Assessment Contents C1.0 Data Elements Assessment .……….……………………………………………………………………………………………………C-1 C1.1 Physical Data Elements .................................................................................................................................................. C-1 C1.1.1 Precipitation............................................................................................................................................................ C-1 C1.1.2 Geology and Hydrogeology ............................................................................................................................. C-2 C1.1.3 Soils ……………………………………………………………………………………………………………………………………..C-3 C1.1.4 Water Resources ................................................................................................................................................... C-4 C1.2 Land Use Data Elements............................................................................................................................................... C-5 C1.2.1 Current Land Use .................................................................................................................................................... C-5 C.1.2.1.1 Potential Contaminant Source Inventory ............................................................................................ C-5 C1.2.2 Historical Land Use ................................................................................................................................................ C-9 C1.3 Public Utilities ................................................................................................................................................................. C-10 C1.3.1 Pipelines ................................................................................................................................................................... C-10 C.1.3.2 Sewers ...................................................................................................................................................................... C-10 C.1.3.2.1 Sanitary Sewers ............................................................................................................................................ C-10 C.1.3.2.2 Storm Sewers ................................................................................................................................................ C-11 C1.4 Water Quantity Data Elements ................................................................................................................................ C-11 C1.4.1 Surface Water Quantity...................................................................................................................................... C-11 C1.4.2 Groundwater Quantity ....................................................................................................................................... C-12 C1.5 Water Quality Data Elements ................................................................................................................................... C-13 C1.5.1 Surface Water Quality......................................................................................................................................... C-13 C1.5.2 Groundwater Quality .......................................................................................................................................... C-13 C1.6 Assessment of Data Elements .................................................................................................................................. C-14 C1.6.1 Use of the Municipal Wells ............................................................................................................................... C-14 C1.6.2 Wellhead Protection Area Criteria ................................................................................................................. C-14 C1.6.2.1 Time of Travel ................................................................................................................................................ C-15 C1.6.2.2 Aquifer Transmissivity ................................................................................................................................ C-15 C1.6.2.3 Daily Volume of Water Pumped ............................................................................................................ C-15 C1.6.2.4 Flow Boundaries ........................................................................................................................................... C-15 C-ii C1.6.2.5 Groundwater Flow Field ............................................................................................................................ C-15 C1.6.3 Quantity and Quality of Water Supplying the Public Water Supply Wells .................................... C-15 C1.6.4 Land and Groundwater Uses in the DWSMAs .......................................................................................... C-16 C2.0 References……………………………………………………………………………………………………………………………………….C-17 List of Tables Table C-1 Prior Lake Municipal Well Construction Summary Table C-2 Potential Contaminant Source Inventory Data Sources Table C-3 PCSI Results – Well Locations in the DWSMAs Table C-4 PCSI Results – Potential Class V Well Locations in the DWSMAs Table C-5 PCSI Results – Storage Tank Locations in the DWSMAs Table C-6 PCSI Results – Hazardous Waste Generators in the DWSMAs Table C-7 PCSI Results – Chemical Storage Sites in the DWSMAs Table C-8 PCSI Results – SSTS in the DWSMAs Table C-9 PCSI Results – Cemetery Locations in the DWSMAs Table C-10 High Capacity Wells within One Mile of the DWSMAs List of Figures Figure C-1 Municipal Wells, DWSMAs, and Aquifer Vulnerability Figure C-2 Bedrock Subcrop Figure C-3 Soil Cover Figure C-4 Surficial Soil Permeability Figure C-5 Current Land Use Figure C-6 Current Zoning Figure C-7 Well Locations Figure C-8 Potential Class V Well Locations Figure C-9 Storage Tank Locations Figure C-10 Hazardous Waste Generator Locations Figure C-11 Chemical Storage Locations Figure C-12 Subsurface Sewage Treatment Systems Figure C-13 Cemetery Locations Figure C-14 High Capacity Wells Within One Mile of the DWSMAs Figure C-15 Historical Land Use Figure C-16 Natural Gas and Petroleum Pipelines Figure C-17 Sanitary Sewer Map Figure C-18 Storm Sewer Map C-iii List of Attachments Attachment C-1 Precipitation Data Attachment C-2 Other Maps Attachment C-3 Sealed Wells C-1 C1.0 Data Elements Assessment The data elements and their assessments required to be included in the Wellhead and Source Water Protection Plan amendment (WHPP) for the City of Prior Lake (Public Water Supply 1700007) are discussed in this appendix. Data elements related to the physical environment, land use, water quantity, and water quality required for this WHPP for the City of Prior Lake were specified in the January 24, 2017 Scoping 2 Decision Notice from the Minnesota Department of Health (MDH, 2017). The City of Prior Lake currently operates seven municipal water supply wells (Table C-1). Wells 3, 4, 5, 6, and 8 are completed in the Jordan Sandstone aquifer. Wells 7 and 9 are completed in the Tunnel City Group-Wonewoc Sandstone (Tunnel City-Wonewoc) aquifer. Two Drinking Water Supply Management Areas (DWSMAs) have been delineated for Prior Lake (Barr, 2016). The West DWSMA encompasses the Wellhead Protection Area (WHPA) for Prior Lake Well 6 and lies completely within the Prior Lake city limits. The East DWSMA encompasses the combined WHPA for Prior Lake Wells 3, 4, 5, 7, 8, and 9 and extends into Spring Lake and Credit River townships. Locations of the Prior Lake DWSMAs are shown on Figure C-1. C1.1 Physical Data Elements Physical data elements required to be considered for this Plan amendment are identified in the Scoping 2 Decision Notice (MDH, 2017). Per the Scoping 2 Decision Notice, precipitation, geology and hydrogeology, soils, and water resources data elements were required to be considered during development of the Plan amendment. C1.1.1 Precipitation Management of the Prior Lake DWSMAs must consider and reflect available precipitation information. As shown in Attachment C-1, there are a number of precipitation gaging stations in Scott County, including in Prior Lake, that report measurements to the State Climatology Office. Locations of these precipitation gaging stations are identified by township, range, and section in the Minnesota Climatology Working Group tables in Attachment C-1. These tables also show the monthly and annual precipitation measured at these stations in Scott County for the period 2012 through 2016. Annual precipitation in east-central Minnesota from the late 1830s to 2000 is shown in the following graph: C-2 The amount of precipitation affects recharge to the groundwater system and the potential for contaminant loading to the groundwater system. This is particularly important in areas of high aquifer vulnerability where the aquifer is not protected from infiltration of precipitation by significant confining units between the ground surface and the top of the source water aquifer. Recharge to the groundwater system affects the size of the WHPA. Recharge was included in the groundwater flow model used to identify the porous media flow portion of the WHPAs (e.g., Barr, 2016; MCES, 2009). In addition, the amount of precipitation also affects the amount of surface runoff. As noted in the Part 1 WHPP amendment (Barr, 2016), the Prior Lake DWSMAs include an area where aquifer vulnerability is classified as High but it was determined that additional data are needed to determine if there is a surface water contribution to the water pumped by the City’s wells so a surface water contribution area was not included in the DWSMA delineation. (Surface water contribution areas are areas of higher topography from which surface runoff drains onto areas within the WHPA where aquifer vulnerability is classified as High.) C1.1.2 Geology and Hydrogeology Existing information on the geology and hydrogeology in the vicinity of Prior Lake was used to define the extent of the source water aquifers used by the City, delineate the WHPAs, and to assess the vulnerability of the public water supply wells and the aquifers in the DWSMAs. The regional conceptual hydrogeologic model is described in detail by MCES (2009; 2014) and hydrogeologic conditions in the vicinity of Prior Lake are discussed by Barr (2016). Information pertinent to the Prior Lake area is summarized below. The Quaternary-aged unconsolidated sediments that overlie the bedrock in Prior Lake were deposited by multiple glacial advances during the Pleistocene Epoch (Meyer et al., 2013) and vary in thickness from approximately 100 feet to nearly 350 feet. The upper 30-50 feet of the Quaternary sediments are Source: Minnesota Dept. of Natural Resources website C-3 comprised of sand and gravel. The deeper sediments are predominantly fine-grained (i.e., clays and silts) with discontinuous pockets of sand and gravel. As shown on Figure C-2, the uppermost bedrock unit beneath almost the entire East DWSMA is the Prairie du Chien Group. There are a few small areas where the St. Peter Sandstone is the uppermost bedrock unit beneath the East DWSMA. The West DWSMA straddles the western side of a buried bedrock valley that trends north-northeast beneath the City (Figure C-2). Beneath the West DWSMA, the uppermost bedrock unit ranges from the Prairie du Chien Group to the Tunnel City Group (Figure C-2). The important bedrock hydrostratigraphic units relative to the Prior Lake DWSMAs are described in more detail by Barr (2016). In addition, the reader is referred to Runkel and Mossler (2006) for more information on the details of the bedrock in the Prior Lake area. Aquifers in the regional groundwater flow system in the vicinity of Prior Lake that were considered in the development of this WHPP amendment include the Prairie du Chien Group, the Jordan Sandstone, and the Tunnel City-Wonewoc. The Tunnel City-Wonewoc aquifer is underlain by the Eau Claire Formation which is generally considered to be a regional aquitard. A leaky aquitard lies between each of the aquifer units. The Oneota Dolomite is the lowermost unit in the Prairie du Chien Group. In many areas, the Oneota Dolomite acts as an aquitard that hydraulically separates the upper portions of the Praire du Chien Group from the Jordan Sandstone. In areas where the Prairie du Chien Group is under shallow bedrock conditions (i.e., overlying bedrock thickness < 200 feet; see Runkel et al. (2003)) the Oneota Dolomite may be sufficiently fractured that it does not act as an aquitard. Between the Jordan Sandstone and the Tunnel City Group (the uppermost unit in the Tunnel City-Wonewoc aquifer) is the St. Lawrence Formation. The St. Lawrence Formation is a dolomitic shale and siltstone that ranges in thickness from approximately 55 to 80 feet in Scott County (Runkel and Mossler, 2006). As noted above, five of the seven City of Prior Lake municipal wells are completed in the Jordan Sandstone aquifer and two are completed in the Tunnel City-Wonewoc aquifer. Well construction information for the Prior Lake municipal wells is summarized in Table C-1 and copies of the MDH well records are presented in Appendix A. Information regarding the geology and hydrogeology of the area was used to assess the vulnerability to contamination of the source water aquifers within the DWSMAs. The information is consistent with the classification of the susceptibility to contamination of the source water aquifers within the DWSMAs varying from Low to High depending upon location. C1.1.3 Soils Management of the vulnerable parts of the DWSMAs in the City of Prior Lake must consider and reflect available soil information. Review of available information from the U.S. Department of Agriculture – Natural Resources Conservation Service SSURGO database (USDA-NRCS, 2012) indicates that there are a variety of surficial soil types within the DWSMAs and that these soils have a range of infiltration characteristics. Surficial soil types within the DWSMAs are shown on Figure C-3 and surficial soil permeability is shown on Figure C-4. C-4 The Minnesota Board of Water and Soil Resources (BWSR) has developed a State-wide GIS coverage for soil erosion risk. The available information from BWSR indicates that soil erosion risk in the Prior Lake DWSMAs ranges from low to high. While there are areas of high soil erosion risk within the Prior Lake DWSMAs, the City is not aware of any eroding lands causing sedimentation problems within either the East or West DWSMA. Based on the aquifer vulnerability assessment results, issues related to surficial soil characteristics or the surficial soil types may potentially have an effect on the management strategies developed for the DWSMAs. Surficial geologic materials in the City of Prior Lake include sand, gravel, silt, and clay and porous soils. The City is well aware that land development and land use activity may have an impact on the uppermost source water aquifer, particularly in areas of high aquifer vulnerability within the DWSMAs, due to infiltration through the permeable soil types. C1.1.4 Water Resources Management of the vulnerable parts of the DWSMAs in the City of Prior Lake must consider and reflect available water resources information. Per the January 24, 2017 Scoping 2 Decision Notice (MDH, 2017) surface water resources must be evaluated to determine if they could potentially apply to this Plan. The Prior Lake DWSMAs lie within the Lower Minnesota River watershed. Smaller watersheds in the area that overlap a portion of one or more of the Prior Lake DWSMAs include the Prior Lake and Credit River watersheds. Flow directions in and boundaries of the watersheds in the area do not indicate any reasons for concern. Areas administered by the Prior Lake-Spring Lake Watershed District and the Scott County Watershed Management Organization overlap the Prior Lake DWSMAs. Surface water bodies within the DWSMAs include lakes, ponds, stormwater basins, and wetlands. A number of these surface water bodies meet the definition of public waters in Minnesota Statutes Section 103G.005, subdivision 15. In addition, several of the water bodies have shoreland classifications pursuant to Minnesota Statutes Sections 103F.201 to 103F.221 and consistent with Minnesota Rules part 6120.3300. There are several surface water bodies in the City that have a shoreland management classification (see Section 1104.201 of the City Code) and are designated as public lakes by the Minnesota Department of Natural Resources. Markley Lake (DNR ID no. 70-21W), Blind Lake (DNR ID no. 70-53), and Cleary Lake (DNR ID no. 70-22) are the only surface water bodies with shoreland management classifications that lie wholly or partially within the East DWSMA. Arctic Lake (DNR ID no. 70-85) and Upper Prior Lake (DNR ID no. 70-72P) are the only surface water bodies with a shoreland management classification that lie wholly or partially within the West DWSMA. The City manages the shoreland areas as described in Section 1104 of the City Code. Based on the aquifer vulnerability assessment results, issues related to surface water resources may potentially have an effect on the management strategies developed for the DWSMAs, particularly in areas where the aquifer vulnerability is classified as High. Geologic conditions in and around the City’s DWSMAs result in the aquifer vulnerability being classified as Low in 100 percent of the West DWSMA. In the East C-5 DWSMA, the aquifer vulnerability is classified as High in approximately 15 percent of the area within the DWSMA with the aquifer vulnerability classified as Moderate in approximately 16 percent of the area and as Low in approximately 68 percent of the area. There are no lakes within the portion of the East DWSMA where aquifer vulnerability is classified as High. There are a number of wetlands within the DWSMAs. Management of wetlands is addressed in the City’s Local Surface Water Management Plan (BRAA, 2012). As shown on Figure C-1, FEMA flood zone information does not indicate any areas within the Prior Lake DWSMAs that are within the 100-year flood zone. The quality of the groundwater in the source water aquifers is dependent on the quality of its recharge. Recharge sources/mechanisms include infiltration of precipitation, and possibly leakage from surface water, (particularly in areas where aquifer vulnerability is classified as High) and leakage from overlying or underlying aquifers. As noted above, additional data are required to determine if there is a surface water contribution to the water pumped by the City’s wells. The City’s existing surface water management program (BRAA, 2012) addresses water quality and, therefore, reduces the potential negative effects that infiltrating surface waters may have on the uppermost source water aquifer. The City believes that existing surface water management programs are adequate to address surface water quality in the DWSMAs and to ensure that aquifer recharge and water availability do not become an issue for the City. C1.2 Land Use Data Elements The January 24, 2017 Scoping 2 Decision Notice requires land use data elements to be considered during development of this Plan amendment. Land use and public utility services within the DWSMAs are discussed in this section. In Part 1 of this Plan amendment, property parcel boundaries were used as much as possible in the delineation of the DWSMAs (Barr, 2016). C1.2.1 Current Land Use Figure C-5 shows the current (year 2010) land uses within the DWSMAs. Numerous land uses are found within the DWSMAs. Land uses in the DWSMAs that cover 1% or more of the area in the DWSMAs include Residential (single family), Parks/Recreational/Preserve, Undeveloped, Open Water, Institutional, Agricultural, Industrial and Utility, Golf Course, and Retail and Other Commercial. As shown on Figure C-5, Residential (combined single family detached and attached) and Park/Recreational/Preserve are the most common land uses in the DWSMAs and occupy approximately 56 percent of the total area within the DWSMAs. Figure C-6 shows the current Prior Lake zoning within the DWSMAs. A map showing zoning in Spring Lake and Credit River Townships in the vicinity of the Prior Lake DWSMAs is presented in Attachment C-2. C.1.2.1.1 Potential Contaminant Source Inventory A potential contaminant source inventory (PCSI) was conducted within the DWSMAs. As shown on Figure C-1, the aquifer vulnerability in the DWSMAs includes the following classifications: Low, Moderate, and High. As noted above, 100 percent of the area within the West DWSMA has an aquifer vulnerability C-6 classification of Low and approximately 68 percent of the area within the East DWSMA has this aquifer vulnerability classification. The aquifer vulnerability is classified as Moderate in approximately 16 percent of the area within the East DWSMA. Approximately 15 percent of the area within the East DWSMA has an aquifer vulnerability classification of High. Per Scoping Decision Notice No. 2, the types of potential contaminant sources that must be inventoried in the DWSMAs vary according to aquifer vulnerability classification. In the area where aquifer vulnerability is classified as High the types of potential contaminant point sources identified include chemical storage sites, a subsurface sewage treatment system (SSTS) hazardous waste generators, storage tank sites (leaking underground storage tank sites), a cemetery, and wells. It should be noted that no dump sites or spill sites not associated with leaking underground tanks (LUSTs) were identified in portions of the East DWSMA in which the aquifer vulnerability is classified as High. In areas where the aquifer vulnerability is classified as Moderate the types of potential contaminant point sources identified include a potential Class V well location (per the U.S. EPA, Class V wells include cesspools, large-scale septic systems serving more than 20 people, or potential automotive maintenance waste disposal wells/pits), storage tank sites, and wells. In areas where the aquifer vulnerability is classified as Low the types of potential contaminant point sources identified include potential Class V well locations, and wells. As shown in Table C-2, information on potential contaminant source locations was obtained from the following sources: Minnesota Department of Health (MDH), Minnesota Department of Natural Resources (MDNR), Minnesota Department of Public Safety (DPS), Minnesota Geological Survey (MGS), Minnesota Office of Pipeline Safety (MnOPS), Scott County, Minnesota Pollution Control Agency (MPCA), and U.S. Environmental Protection Agency (EPA) databases. Information from the various sources was compared to identify overlaps/duplications. In keeping with the Wellhead Protection Rules and MDH policy, all identified potential contaminant source locations within the old Prior Lake DWSMA limits were verified during preparation of this plan amendment if they had not been previously verified. In addition, the locations of potential contaminant sources that fall in the areas between the boundaries of the old and new Prior Lake DWSMAs were also verified. As part of location verification, any inaccurate locations identified during the PCSI were corrected to the extent possible based on available data. For future updates of this Plan, the City will access available data sources and maintain as accurate and up to date a potential contaminant source database as possible in its wellhead protection file. The City maintains current records of the conditions around the municipal water supply wells. Water system operators check the area around each well routinely and report any conditions of concern. Results of this inventory indicate the presence of several potential contaminant source properties within the DWSMAs and include properties with wells, potential Class V well locations, storage tanks, hazardous waste generators, chemical storage, SSTS, and a cemetery. Properties identified as potential sources of contamination during the PCSI are listed in Tables C-3 through C-9 as follows: Commented [JG1]: NOTE TO CITY REVIEWERS: If you have completed Inner Wellhead Management Zone (IWMZ) potential contaminant survey forms for each of the water supply wells the completed surveys should be referenced here and copies of the forms included in an attachment to Appendix C. C-7  Wells – Table C-3  Potential Class V wells – Table C-4  Storage tanks – Table C-5  Hazardous waste generators – Table C-6  Chemical storage sites – Table C-7  SSTS – Table C-8  Cemeteries – Table C-9 These potential source properties include various commercial, government, and educational sites as well as residences. As noted below remediation activities have been completed at the LUST site in the East DWSMA. Locations of potential contaminant sources are shown on Figures C-7 through C-13 as follows:  Well locations – Figure C-7  Potential Class V Well locations – Figure C-8  Storage tank locations – Figure C-9  Hazardous waste generator locations – Figure C-10  Chemical storage site locations – Figure C-11  SSTS locations – Figure C-12  Cemetery location – Figure C-13 These potential contaminant sources have been considered in the development of the management strategies for the DWSMAs. Potential contaminant source locations that were verified, to the extent possible, during preparation of this Plan amendment are identified in Tables C-3 through C-8. Verification procedures used included matching mapped locations with addresses on MDH Well Records or State/County-issued permits, published business addresses, property parcel addresses, local knowledge of City staff, or information from City files (note that not all verification procedures were used for each type of potential contaminant source). The data tables indicate the status of verification for each potential contaminant source location. New information developed on contaminant sources in the future will be verified as they are discovered as part of the WHPP implementation. C.1.2.1.1.1 Wells Wells located within the DWSMAs, in particular wells completed in, or penetrating, a source water aquifer (i.e., an aquifer from which the City’s wells pump water) have the potential for being a pathway via which contamination could more rapidly reach the source water aquifer and the Prior Lake municipal wells; especially if the wells were not properly installed or have not been adequately maintained. Data obtained from the Minnesota County Well Index (CWI) during the PCSI indicates that there are 50 wells (this number includes the active Prior Lake municipal wells) within the Prior Lake DWSMAs (Figure C-7). Table C-3 lists the wells that were identified in the DWSMAs and indicates the aquifer in which each well is completed (if known), the date the well was completed (if known), and the status of the well (if known). During the search for wells in the DWSMAs, 59 sealed wells were identified. Per direction from the MDH the sealed well locations are not included in the PCSI. However, since an improperly sealed well could act as a pathway for contaminants to migrate from the surface into the groundwater system the City believes C-8 it is important to maintain a record of sealed well locations. Therefore, sealed well locations in the DWSMAs are shown in Attachment C-3. As indicated in Table C-3, uses for the wells in the DWSMAs known to be active include domestic (29), community (municipal) water supply (7), commercial (2), non-community public water supply (1), piezometer/monitoring well (2), and irrigation (1). The use category for 6 of the wells is not available (Table C-3). The aquifer in which eight of the wells are open is not available (i.e., not identified in the public database). Wells located within the DWSMAs, particularly those wells completed in or below a source water aquifer, have the potential for being a pathway for contamination to reach the source water aquifer(s) and the Prior Lake municipal water supply wells. Prior Lake Well 2 (unique number 212318) is identified in Table C-3 as an inactive well. This well is no longer part of the City’s water supply system. At the time this Plan amendment was prepared, the City was working to identify the location of Well 2 so that it could be sealed. Available information from the Minnesota Department of Natural Resources’ (MDNR) Minnesota Permitting and Reporting System (MPARS) database and the CWI was reviewed to identify active high capacity wells within a zone that includes the DWSMAs and extends one mile beyond the boundaries of the DWSMAs. The available information indicates there are five active high capacity well within the zone of interest in addition to the seven Prior Lake municipal water supply wells. The high capacity well locations are shown on Figure C-14. High capacity wells are defined as wells that pump more than 1,000,000 gallons per year or more than 10,000 gallons per day. Owners of these wells have obtained groundwater appropriation permits from the MDNR. As shown on Figure C-14, the two of the non-Prior Lake wells are located to the southeast of the East DWSMA. The other three wells are located northwest of the West DWSMA. A new high capacity well installed within or near one of the DWSMAs could, potentially, affect the boundaries of a DWSMA. Uses of the two non-Prior Lake municipal supply wells shown in the MPARS database are Golf Course Irrigation and Lake Level Maintenance (Table C-10). As shown in Table C-10, four of the non-Prior Lake municipal supply high capacity wells pump from the Jordan Sandstone aquifer and the other well pumps from the Tunnel City-Wonewoc aquifer. C.1.2.1.1.2 Potential Class V Well Locations An inventory of locations where Class V wells may be present within the DWSMAs was done as part of the PCSI. Typical land uses associated with the presence of Class V wells include automobile service stations and repair shops. As defined by the U.S. Environmental Protection Agency, cesspools and large-scale septic systems that serve more than 20 people also are also included in the Class V well classification. During the PCSI, it was determined that there are nine separate property parcels where Class V wells may be present based on the type of business that is or had operated there or the use of the property (see Table C-4 and Figure C-8). All of these addresses are located in the East DWSMA. For three of the properties, the assessment of potential for presence of a Class V well is due to the properties’ association with automobile repair. For the remaining six properties, the assessment of potential for presence of a Class V well is due to the potential for the septic system to serve 20 or more people. MDH did not require that the City determine if Class V wells are actually present on any of these properties. Results of the location verification are summarized in Table C-4. C-9 C.1.2.1.1.3 Storage Tanks The PCSI identified three properties with a total of 11 current or former storage tanks within the portions of the DWSMAs in which aquifer vulnerability is classified as Moderate or High (Table C-5 and Figure C-9). Products stored in the active storage tanks vary from site to site and include various fuels. Of the three properties identified, one of the properties was also a LUST site. Available information indicates that the MPCA had closed the LUST site prior to the time this Plan amendment was prepared. Results of the location verification are summarized in Table C-5. C.1.2.1.1.4 Hazardous Waste Generators The PCSI identified two property parcels within the portion of the East DWSMA where aquifer vulnerability is classified as High on which hazardous waste generators are present (Table C-6 and Figure C-10). Available information identifies the hazardous waste generators as “Active” and that both are permitted as Very Small Quantity Generators. As shown in Table C-6, the locations of the hazardous waste generators were verified. C.1.2.1.1.5 Chemical Storage Sites The PCSI identified three property parcels within the portions of the East DWSMA where aquifer vulnerability is classified as Moderate or High on which chemical storage occurs (Table C-7 and Figure C-11). These properties are listed as chemical storage sites due to the storage of fuels. As shown in Table C-7, these chemical storage locations have been verified. C.1.2.1.1.6 Subsurface Sewage Treatment Systems (SSTS) As indicated in Table C-8, the PCSI identified one property within the portion of the East DWSMA where aquifer vulnerability is classified as High on which an SSTS is present. This location is a private residence. The SSTS location is shown on Figure C-12. As shown in Table C-8, the location has been verified. The City Code does not currently address operation and maintenance of SSTS. Rather, the City relies on Scott County Subsurface Sewage Treatment System Ordinance No. 4 to regulate these systems. C.1.2.1.1.7 Cemeteries As indicated in Table C-9 and shown on Figure C-13, one cemetery was identified within the portion of the East DWSMA in which the aquifer vulnerability is classified as High. As noted in Table C-9, the cemetery location has been verified. The City Code does not currently address cemeteries. Rather, the City relies on Scott County and the State of Minnesota to regulate cemeteries. C1.2.2 Historical Land Use Prior Lake was incorporated as a village in 1891. Prior to the 1960s, Prior Lake experienced low to moderate growth. Historical land use shown on Figure C-15 is based on pre-1984 land use data from the Metropolitan Council. As indicated on Figure C-15, the vast majority of the historical land use in the areas that fall within the limits of the DWSMAs was agricultural or vacant. Metadata associated with ArcView C-10 shapefiles of pre-1984 land use maps available from the Metropolitan Council indicate that the maps are not considered reliable for determining land use of individual properties. Between 1960 and 1990, the population of Prior Lake grew from 848 to 11,482. By 2010, the population had nearly doubled to 22,796. At the time this Plan amendment was prepared, the City’s population was estimated at over 25,000. Using available information, historical land uses that might significantly affect the management strategies for the DWSMAs that are not currently present within the DWSMAs were not identified. While it is possible that buried features such as old farm wells that were not properly sealed or unused underground storage tanks not listed in any available database could be present within the DWSMAs, available information does not suggest the presence of such features. Thus, there is no basis for a concerted search for such buried features with in the DWSMAs. If any such, currently unknown, features are to be located in the future it would most likely occur only if they are encountered during redevelopment of a property. C1.3 Public Utilities Management of the DWSMAs in the City of Prior Lake must consider and reflect available public utility services information. As shown in Table C-1, the seven Prior Lake municipal wells pump from a total of two different bedrock aquifers. Wells 3, 4, 5, 6, and 8 pump from the Jordan Sandstone aquifer. Wells 7 and 9 pump from the Tunnel City-Wonewoc aquifer. Well construction information for the Prior Lake municipal wells is summarized in Table C-1. Copies of the MDH Well Records for these wells are presented in Appendix A. C1.3.1 Pipelines As shown on Figure C-16, no petroleum or natural gas pipelines cross the Prior Lake DWSMAs. There is one natural gas pipeline that ends approximately 0.75 miles west of the East DWSMA and does not present a potential risk to the DWSMA. The City will rely on State/Federal oversight and the management programs of the pipeline owners for proper operation and maintenance of the pipelines and response to releases from the pipelines. Therefore, additional measures in this Plan to address releases are not necessary. C.1.3.2 Sewers C.1.3.2.1 Sanitary Sewers The City’s sanitary sewer system is discussed in chapter 8 of the City’s 2030 Comprehensive Plan. The trunk sanitary sewer system in Prior Lake is shown on Figure C-17. An improperly designed or maintained sanitary sewer system may increase the chance for the release of untreated sewage into environmentally sensitive areas such as protected wetlands, lakes, and rivers. It could also result in releases of untreated sewage that could infiltrate and potentially reach the source water aquifer. This would be of particular concern in portions of the DWSMAs in which aquifer vulnerability is classified as High. Part 7 of the Prior Lake City Code addresses sanitary sewer use and service. The City of Prior Lake has an ongoing maintenance program to insure the integrity and proper C-11 operation of their sanitary sewer system. Additional measures in this Plan to address the sanitary sewers are considered to be unnecessary. C.1.3.2.2 Storm Sewers Stormwater management in Prior Lake is discussed in chapter 7 of the City’s 2030 Comprehensive Plan and in the City’s Local Surface Water Management Plan (BRAA, 2012). The City’s storm sewer lines are shown on Figure C-18. A municipal storm sewer and surface water drainage system plays a significant role in the management of storm water and can be an important part of management strategies developed for a wellhead protection plan. An improperly designed or maintained storm sewer and surface water drainage system may increase the chance for the spread of a contaminant into environmentally sensitive areas such as protected wetlands, lakes, and rivers or allow infiltration of contaminants within areas of the DWSMAs with aquifer vulnerability classified as High that could potentially reach the source water aquifer. A surface water management program is in place in Prior Lake. The City will rely on their existing surface water management program to address issues related to surface water. Therefore additional measures to address surface water in this Plan are considered to be unnecessary. Another component of surface water management in the vicinity of Prior Lake is the County’s ditch system. Figure C-2-2 in Attachment C-2 shows the County ditches in the vicinity of the Prior Lake DWSMAs. A comparison of the ditch inventory map to the Prior Lake DWSMA locations shows that there are no County drainage ditches within or crossing the DWSMAs. C1.4 Water Quantity Data Elements Surface water and groundwater quantity are discussed in this section as required by the January 24, 2017 Scoping 2 Decision Notice from the MDH. C1.4.1 Surface Water Quantity As discussed above, surface water features within the DWSMAs include lakes, ponds, storm water basins, and wetlands. Surface water management is discussed in the City’s Local Surface Water Management Plan (BRAA, 2012). Cleary Lake is located in the southeastern portion of the East DWSMA. Underlying aquifer vulnerability in this portion of the DWSMA is Low. The MPARS database indicates that under appropriation permit 1978- 6042, water is pumped from Cleary Lake for golf course irrigation. The annual permitted withdrawal from the lake is 33 million gallons with an instantaneous maximum pumping rate of 1,000 gallons per minute. This is the only permitted surface water withdrawal within the DWSMAs shown in the MPARS database. The City is not aware of any current water-use conflicts that impact surface water quantity in the vicinity of the DWSMAs. Therefore, measures in this Plan to address surface water quantity issues are considered to be unnecessary. C-12 C1.4.2 Groundwater Quantity The Prior Lake municipal water supply system currently includes seven primary water supply wells. Under MDNR Appropriation Permit No. 1975-6201, the City of Prior Lake currently has a permitted annual groundwater appropriation of 900 million gallons per year (MGY). The permitted instantaneous total pumping rate for the Prior Lake system is 6,750 gallons per minute (gpm) or approximately 9.7 million gallons per day (MGD). The projected water use (i.e., pumpage) used to delineate the Prior Lake WHPAs and DWSMAs was 1,012,911,500 gallons per year (Barr, 2016). Prior Lake incorporated as a village in 1891. In 1960, the population of Prior Lake was 848. Prior to the 1980’s, much of the land in Prior Lake remained undeveloped or was used for agriculture (e.g., Figure C-15). In 1980 the population of Prior Lake was 7,284. Significant growth occurred in Prior Lake after 1980. By 1990 the population of Prior Lake had increased to 11,482 (an increase of nearly 60 percent from 1980). In the next ten years between 1990 and 2000 the population of Prior Lake increased to 15,917. The 2010 census counted a total of 22,796 people in Prior Lake. As of 2016, Metropolitan Council estimated the Prior Lake population to be 25,520. Prior Lake’s population is projected to reach approximately 27,500 in 2020 and approximately 33,900 in 2030 (Metropolitan Council, 2015a). As shown in Table C-1, the existing Prior Lake municipal water supply wells were constructed between 1973 and 2007. Water demand is discussed in the 2030 Comprehensive Plan (Prior Lake, 2005). Water demand in Prior Lake has continued to grow along with the population. From 1996 to 2000 Prior Lake’s water demand increased approximately 32 percent and from 2000 to 2005 Prior Lake’s water demand increased approximately 15 percent. Between 2005 and 2013 the City’s water demand increased approximately 16 percent. The volume pumped from the City’s wells in 2015 was approximately 40 percent lower than the volume pumped in 2013. The City began purchasing water from the Shakopee Mdewakanton Sioux Community (SMSC) in 2014. As a result, the annual volumes pumped from the Prior Lake municipal wells decreased. The City’s population increased approximately 17 percent between 2005 and 2015. The City’s average day water demand in 2030 is projected to be approximately 3.61 MGD (Metropolitan Council, 2015b) or approximately 2,500 gpm. As discussed above, in addition to the City of Prior Lake municipal water supply wells two other high capacity wells within one mile of the DWSMAs were identified. Information on these two wells is presented in Table C-10. Prior Lake operates their wells in a manner that does not result in adverse impacts to sensitive ecosystems in the area. The City is not aware of any current adverse groundwater conflicts or interferences related to the existing Prior Lake municipal wells. Construction of other high capacity wells in or near the DWSMAs may influence groundwater flow in the source water aquifers and the groundwater quantity available to the municipal system. Such wells could potentially affect the boundaries of the DWSMAs, which would require the City to update the Wellhead Protection Plan. In addition, such wells could potentially reduce the static levels in the source water C-13 aquifers. Issues regarding changes in appropriations resulting from additions or deletions to the current list of water appropriations in the DWSMAs will be addressed in the management portion of this Plan. Persistent drought conditions or other water emergencies may also prove to be a threat to the quantity of groundwater available to the municipal system. Under Part 7, Section 705.703 of the City Code the City Manager Council or designee can put in place emergency water conservation measures during a water emergency. These measures may include, but are not limited to, total prohibition of watering, sprinkling, or irrigation. The City’s water conservation program includes a tiered water rate structure, odd-even day sprinkling restrictions, and time of day watering restrictions (see Part 7 Section 705.701 of the City Code). Prior Lake’s current water supply meets the demand of its consumers. The City is confident that the municipal water supply system will continue to have the capability of meeting future demand. C1.5 Water Quality Data Elements Surface water and groundwater quality are discussed in this section. Per the January 24, 2017 Scoping 2 Decision Notice from the MDH, submission of data elements related to surface water and groundwater quality are not required for this WHPP amendment. C1.5.1 Surface Water Quality The City’s Local Surface Water Management Plan (BRAA, 2012) identifies and addresses surface water quality issues. The Plan establishes the framework of a comprehensive program that is aimed at protecting and improving the quality of existing surface water resources within the City and provides guidelines for current and future urban development. C1.5.2 Groundwater Quality The MDH has an ongoing program to monitor the quality of municipal water supplies. City of Prior Lake municipal wells are sampled at least once every year for selected metals, other inorganic compounds, organic compounds, and bacteria as part of this program. To date, reported concentrations of all monitoring parameters meet the regulatory levels specified by the U.S. EPA as part of the Safe Drinking Water Act or by the State of Minnesota. These results are presented in the Prior Lake Annual Drinking Water Report. A copy of the 2016 annual report is presented in Appendix D. The 2016 report can also be accessed on the City’s website at http://www.cityofpriorlake.com/drinking-water-supply.php along with reports from previous years. The City treats water pumped from its water supply wells at a water treatment facility that has been in operation since 2009. In the treatment facility, raw water from the wells is treated to remove iron, and manganese. In addition, fluoride and chlorine (a disinfectant) are added to the water before it exits the treatment facility and is distributed to customers. The treatment facility has a capacity of 7.5 MGD. The MDH has prepared a study for Scott County which evaluates the relative susceptibility of the water table aquifer to contamination from nitrate (MDH, 2012). In the vicinity of the Prior Lake DWSMAs, the probability of contamination of the water table aquifer by nitrated was classified as mainly low or C-14 moderate. There are some small areas of high susceptibility identified by the MDH within both the East and West DWSMAs. In areas of the Prior Lake DWSMAs where the vulnerability of the uppermost source water aquifer is classified as High, the travel time from the water table aquifer to the uppermost source water aquifer would be relatively short. As shown in Part 1 of this WHPP amendment (Barr, 2016), little to no nitrate was reported in samples collected in 2016 from the Prior Lake municipal wells in the zone where aquifer vulnerability is classified as High. Thus, nitrate does not appear to be a concern for these wells. In areas of the Prior Lake DWSMAs where the vulnerability of the uppermost source water aquifer is classified as Moderate or Low the travel time from the water table aquifer to the uppermost source water aquifer would be significantly longer than in an area of High vulnerability. Nitrate was not reported in the 2016 samples from the Prior Lake wells located in the Low and Moderate aquifer vulnerability zones (Barr, 2016). It’s important to consider groundwater quality when determining management strategies for the land uses within the DWSMAs. Since the City currently enjoys good water quality, the City has developed management strategies in this WHPP amendment aimed at maintaining the groundwater quality in the source water aquifers. C1.6 Assessment of Data Elements C1.6.1 Use of the Municipal Wells Prior Lake currently has seven municipal water supply wells in the municipal water supply and distribution system for Public Water Supply 10700007. Locations of the wells are shown on Figure C-1 and construction details for the Prior Lake municipal wells are summarized in Table C-1. Copies of the MDH well records for these wells are presented in Appendix A. In the 2010 census Prior Lake had a population of 22,796. As of 2016, Metropolitan Council estimated the Prior Lake population to be 25,520. The Metropolitan Council projects Prior Lake’ population to reach 27,500 in 2020 and 33,900 in 2030 (Metropolitan Council, 2015a). As discussed above, the City’s average day water demand in 2030 is projected to be approximately 3.61 MGD (Metropolitan Council, 2015b) or approximately 2,500 gpm. For the period 2010–2015, daily demand on the Prior Lake water system averaged about 2.0 MGD. Prior Lake’s permitted total appropriation volume is 900 MGY. The permitted instantaneous total pumping rate for the Prior Lake system is 6,750 gpm. Prior Lake currently has two elevated water storage towers with a combined capacity of 1.75 million gallons (MG). In addition, the clearwell/reservoir at the water treatment facility can store an additional 1.5 MG. C1.6.2 Wellhead Protection Area Criteria Delineation of the WHPAs for the Prior Lake wells involved the evaluation of porous-media flow for all wells. The delineation also included evaluation of fracture flow for Wells 3, 4, 5, and 8 (Barr, 2016). C-15 Information/criteria used to perform the WHPA/DWSMA delineations are discussed in the WHPA delineation report (the Part 1 WHPP amendment prepared by Barr (2016)) and are summarized below. C1.6.2.1 Time of Travel A 10-year groundwater time of travel was used for the WHPA delineation for each of the Prior Lake municipal wells. A map in the Part 1 report shows the 10-year groundwater time of travel WHPAs for the Prior Lake wells. C1.6.2.2 Aquifer Transmissivity Pumping tests in Prior Lake Well 3 and SMSC well ST Jordan 1 (unique number 525938) were used to estimate the transmissivity of the Jordan aquifer. The transmissivity of the TCW aquifer was estimated from a combination of an aquifer test at Savage Well 12 (unique number 676443) and specific capacity data from Prior Lake Wells 7 and 9. A summary of the test results is included in Appendix B of the Part 1 WHPP Amendment report. Results from the tests were incorporated into the groundwater flow model as discussed in the WHPP Part 1 Amendment report (Barr, 2016). C1.6.2.3 Daily Volume of Water Pumped Daily volume of water pumped from each of Prior Lake’s municipal wells used in the groundwater flow model was determined by using the highest recorded or projected pumping annual volume for each well. Determination of the daily volume of water pumped for each well used in the groundwater flow models is discussed in detail in Barr (2016). C1.6.2.4 Flow Boundaries The primary flow boundary for the bedrock source water aquifers in the Prior Lake area is the Minnesota River to the west and north. Additionally, low-permeability valley fill sediments in the buried bedrock valley the runs between the East and West DWSMAs (see Figure C-2 for the orientation of the buried valley) may affect local flow directions near the buried bedrock valley. These flow boundaries were included in the groundwater model used for the porous medial flow portion of the WHPA delineation. C1.6.2.5 Groundwater Flow Field As discussed in Barr (2016), the groundwater model shows the groundwater flow in the Jordan Sandstone east of the buried valley to be primarily directed to the north towards the Minnesota River with some westerly component of flow near the buried bedrock valley. These flow directions are consistent with the Jordan contour map in Tipping and Runkel (2007). West of the buried valley, the model simulates a northwesterly flow direction. Tipping and Runkel (2007) show northerly flow in this area; however, the Jordan contour map from the original Scott County Geologic Atlas (Kanivetsky and Palen, 1982) indicates a northwesterly flow direction. C1.6.3 Quantity and Quality of Water Supplying the Public Water Supply Wells As discussed above, the Prior Lake municipal wells are open to two different aquifers. Construction details for the Prior Lake municipal wells are summarized in Table C-1. C-16 Based on the available information, there are no known groundwater quantity issues that will have any significant impact on the management of the DWSMAs associated with the Prior Lake wells. While it is possible that high capacity wells completed in the source water aquifers in the vicinity of Prior Lake or within the DWSMAs could affect the quantity of groundwater available, there are currently no known significant conflicts or interferences related to the municipal wells in the DWSMAs. It is possible that one or both of the DWSMAs could expand in the future if Prior Lake installs additional wells in the source water aquifers. Any new wells constructed within the 10-year life time of this Plan will be incorporated, as directed by the MDH, into the groundwater model and, if projected pumping from the new wells affects the boundaries of the DWSMAs, Plan amendments will be prepared with the help of the Wellhead Protection Consultant. As discussed above, the City participates in the MDH’s ongoing program to monitor the quality of municipal water supplies. To date, reported concentrations of all monitoring parameters meet the regulatory levels specified by the U.S. EPA as part of the Safe Drinking Water Act or by the State of Minnesota. Results of these analyses are available upon request from MDH or the City. C1.6.4 Land and Groundwater Uses in the DWSMAs Aquifer vulnerability within the DWSMAs ranges from Low to High. Aquifer vulnerability is classified as Low in 100 percent of the area within the West DWSMA. In the East DWSMA the aquifer vulnerability is classified as High in approximately 15 percent of the area within the DWSMA with the aquifer vulnerability classified as Moderate in approximately 16 percent of the area and as Low in approximately 68 percent of the area. When the DWSMAs are taken together, percentage of the total area within the DWSMAs for each aquifer vulnerability classification is as follows:  High: approximately 11 percent  Moderate: approximately 12 percent  Low: approximately 77 percent Land uses within the DWSMAs could affect source water protection efforts or the management of the DWSMAs. In particular, unmaintained, damaged, poorly-constructed, unused, or incorrectly abandoned wells could provide a direct route for contaminants to enter the source water aquifer(s). As discussed by Barr (2016), the DWSMAs were delineated to encompass the zone in which groundwater travel time to the Prior Lake municipal wells is ten years or less. The DWSMAs encompass the WHPAs as described above and are defined by geographically identifiable features. The West DWSMA lies entirely within Prior Lake’s city limits, while the East DWSMA extends into Spring Lake and Credit River townships. Potential contaminant sources within the DWSMAs identified through the PCSI include wells, storage tank sites (including one LUST site), potential Class V well locations, hazardous waste generators, chemical storage locations, SSTS, and a cemetery. These potential contaminant sources will be considered when developing the management strategies for the Prior Lake DWSMAs. C-17 C2.0 References Barr Engineering Company (Barr), 2016. City of Prior Lake Wellhead Protection Plan Amendment – Part 1: Delineation of the Wellhead Protection Area (WHPA), Drinking Water Supply Management Area (DWSMA) and Assessments of Well and DWSMA Vulnerability, prepared for the City of Prior Lake, July 2016. Bonestroo Rosene Anderlik & Associates (BRAA), 2012. Local Surface Water Management Plan, prepared for the City of Prior Lake. Kanivetsky, R., and B. Palen, 1982. Hydrogeology of Scott County. Plate 6 of 6, in Geologic Atlas of Scott County, Minnesota: N.H. Balaban and P.L. McSwiggen (ed.). Minnesota Geological Survey County Atlas Series, Atlas C-01. University of Minnesota, St. Paul. Metropolitan Council, 2015a. 2015 System Statement – City of Prior Lake, issued September 17, 2015. Metropolitan Council, 2015b. Master Water Supply Plan, September 23, 2015. Minnesota Department of Health (MDH), 2012. Nitrate-Nitrogen Probability Ranking Map for the Water Table Aquifer – Scott County, Minnesota, Environmental Health Division – Source Water Protection Unit, October 2012. Minnesota Department of Health (MDH), 2017. Scoping 2 Decision Notice and Meeting Summary – City of Prior Lake – PWSID 1700007, Letter from Karen S. Voz of the MDH to Katy A. Gehler of the City of Prior Lake, January 24, 2017. Prior Lake, 2005. City of Prior Lake Draft 2030 Comprehensive Plan, prepared by Prior Lake Planning Commission, adopted by the Prior Lake City Council on May 2, 2005. Runkel, A.C., Tipping, R.G., Alexander, E.C., Jr., and J.A. Green, 2003. Hydrogeology of the Paleozoic bedrock in southeastern Minnesota. Minnesota Geological Survey Report of Investigations 61. Runkel, A.C. and J.H. Mossler, 2006. “Bedrock Geology”, plate 2 of 6 in Geologic Atlas of Scott County, Minnesota, D. Setterholm, project manager, Minnesota Geologic Survey County Atlas Series C-17, University of Minnesota, St. Paul, Minnesota. Tipping, R.G., and A.C. Runkel, 2007. Hydrogeology of Scott County. Supplement to the Scott County Geologic Atlas. Minnesota Geological Survey Open File Report 08-02, 67 pp. C-18 Tables Table C-1 Prior Lake Municipal Well Construction Summary City of Prior Lake Wellhead Protection Plan Amendment Local Well ID Unique Number Use/ Status1 Casing Diameter (in.) Casing Depth (ft.) Well Depth (ft.) Year Constructed Aquifer Well Vulnerability 3 207308 P 24 x 16 268 364 1973 CJDN Vulnerable 4 110452 P 24 x 16 264 345 1975 CJDN Vulnerable 5 420954 P 30 x 24 x 18 290 372 1988 CJDN Vulnerable 6 603083 P 36 x 30 x 24 318 410 2001 CJDN Not Vulnerable 7 655913 P 18 x 12 x 82 4303 640 2003 CTCW Not Vulnerable 8 686263 P 30 x 24 305 402 2006 CJDN Vulnerable 9 686264 P 24 x 18 x 12 454 640 2007 CTCW Not Vulnerable 1 P = Primary Water Supply Well 2 CJDN = Jordan Sandstone CTCW = Tunnel City Group – Wonewoc Sandstone Table C-2 Potential Contaminant Source Inventory Data Sources City of Prior Lake Wellhead Protection Plan Amendment Potential Contaminant Source Type Data Source(s) Chemical Storage Sites MnDPS Cemetery Locations Scott County Hazardous Waste Generator Locations MPCA WIMN database; MPCA Agency Interests database; Scott County Potential Class V Well Locations MPCA WIMN database; U.S. EPA LUST Locations MPCA WIMN database; MPCA Agency Interests database Storage Tanks MPCA WIMN database; MPCA Agency Interests database SSTS Locations Scott County Wells MGS CWI Database; MDNR MPARS database; MDH Sealed Wells database Other Data Type Data Source(s) Current Land Use Met Council 2010 Generalized Land Use Historical Land Use Met Council pre-1984 Land Use Planned Land Use Met Council 2030 Generalized Interpreted Land Use Ditch Inventory Scott County (georeferenced map image based on http://gis.co.scott.mn.us/maps/maps/Community_Development/Ditch_Inventory.pdf) Bedrock Geology MGS - 2013 Bedrock Geology of the Twin Cities Ten-County Metropolitan Area Flood Zones FEMA Digital Flood Insurance Rate Map Database Roads and Railroads MnDOT Office of Transportation database Pipelines mnpipe.shp - MGIO & MnOPS 1996 Sewer Networks City of Prior Lake Sanitary Sewer Basemap; City of Prior Lake Stormwater Basemap Soils (Cover) NRCS SSURGO database Soils (Hydrologic) NRCS SSURGO database Zoning City of Prior Lake Zoning Map Acronyms CWI – County Well Index MGIO – Minnesota Geospatial Information Office MPCA – Minnesota Pollution Control Agency FEMA – Federal Emergency Management Admin. MDH – Minnesota Dept. of Health NRCS – Natural Resources Conservation Service MnDPS – Minnesota Dept. of Public Safety MnOPS – Minnesota Office of Pipeline Safety WIMN – What’s In My Neighborhood MGS – Minnesota Geological Survey MnDOT – Minnesota Dept. of Transportation U.S. EPA – United States Environmental Protection Agency Met Council – Metropolitan Council MPARS – Minnesota Permitting and Reporting System Table C-3 PCSI Results - Well Locations in the DWSMAs City of Prior Lake Part 2 WHPP Amendment Page 1 of 1 P:\Mpls\23 MN\70\23701056 WHPP Amendment\WorkFiles\Part 2 WHPP Amendment\Work Files\Tables\Table C-3 Wells.xlsx PCSI ID PID No.Unique No.Status Use Well Owner Well Location City Total Depth (Feet)Date Completed Aquifer PCS Code Location Verified 1 139-110570010 457221 Active Domestic Gressman, Michael 17260 Revere Wa Prior Lake 197 08/08/1989 OPDC WEL Yes 2 139-250040010 212318 Inactive Municipal City of Prior Lake Not Available Prior Lake 191 00/00/1950 QBAA WEL Uncertain 3 139-250210330 207308 Active Community Supply (municipal)City of Prior Lake Not Available Prior Lake 364 04/14/1973 CJDN WEL Yes 4 139-250210330 110452 Active Community Supply (municipal)City of Prior Lake Not Available Prior Lake 345 07/18/1975 CJDN WEL Yes 5 139-251870440 420954 Active Community Supply (municipal)City of Prior Lake Not Available Prior Lake 372 04/06/1988 CJDN WEL Yes 6 139-253820540 603083 Active Community Supply (municipal)City of Prior Lake 15248 Wilds Pk Prior Lake 410 08/17/2001 CJDN WEL Yes 7 139-250210330 655913 Active Community Supply (municipal)City of Prior Lake 16341 Itasca Av Se Prior Lake 640 06/00/2003 CTCW WEL Yes 8 139-253150010 686263 Active Community Supply (municipal)City of Prior Lake 17073 Adelmann St Prior Lake 402 06/26/2006 CJDN WEL Yes 9 139-253150010 686264 Active Community Supply (municipal)City of Prior Lake Adelmann St Se Prior Lake 640 04/07/2007 CTCW WEL Yes 10 139-251880010 722939 Active Public Supply/Non-Community St. Michael Cemetery 5437 160th St Se Prior Lake 125 04/28/2005 QWTA WEL Yes 11 139-259330200 211832 Active Domestic Tessmer, Ben 2790 154th St NW Prior Lake 340 03/21/1977 OPCJ WEL Yes 12 139-250210330 672729 Inactive Pilot Hole for Well 7 City of Prior Lake 16341 Itasca Av Se Prior Lake 650 03/18/2002 MTPL WEL Yes 13 139-259010190 1000012508 Unkown Not Available Not Available Not Available Prior Lake Not Available Not Available Not Available WEL Uncertain 14 139-40110010 451224 Active Domestic Hadac, Ronald 6076 Birch Rd Prior Lake 160 03/31/1989 OPDC WEL Yes 15 139-40110140 700747 Active Domestic Rausch, Ken 6125 Birch Rd Prior Lake 120 11/19/2003 QBAA WEL Yes 16 139-259360200 1000012502 Unkown Not Available Not Available Not Available Prior Lake Not Available Not Available Not Available WEL Uncertain 17 139-250850050 127110 Active Domestic Snell 15829 Island View Rd NW Prior Lake 325 08/13/1976 QBAA WEL Yes 18 139-119120025 424698 Active Domestic Theis, Charles 5570 180th St E Prior Lake 180 08/19/1986 OPDC WEL Yes 19 139-250850060 127111 Active Domestic Greenfield, L.15849 Island View Rd NW Prior Lake 323 08/23/1976 QBAA WEL Yes 20 139-253750290 502730 Active Domestic Walsh, Thomas 3327 Wild Horse Ci NW Prior Lake 206 06/12/1989 QBUA WEL Yes 21 139-259360740 462253 Active Irrigation Independent Sch Dis 15855 Fish Point Rd Prior Lake 255 09/12/1989 OPDC WEL Yes 22 139-250040180 207307 Active Domestic Clemmens, Irwin Not Available Prior Lake 157 10/04/1968 QBUA WEL Uncertain 23 139-49060100 495829 Active Domestic Bang, Richard 6010 170th St E Prior Lake 95 10/04/1991 QBUA WEL Yes 24 139-250850030 127114 Active Domestic Reid 15789 Island View Rd NW Prior Lake 302 08/06/1976 QBAA WEL Yes 25 139-40110140 207494 Active Domestic Not Available 6125 Birch Rd Prior Lake 100 04/18/1969 QBAA WEL Yes 26 139-259360220 1000012503 Unkown Not Available Not Available Not Available Prior Lake Not Available Not Available Not Available WEL Uncertain 27 139-110470010 420050 Active Domestic Ryan, Richard 17374 Revere Wa Prior Lake 195 05/07/1986 OPDC WEL Yes 28 139-119120043 150168 Active Domestic Zien, Jerry 17808 Revere Wa Prior Lake 140 00/00/1985 OPDC WEL Yes 29 139-255090010 221328 Active Domestic Bohnsach, Emma 15540 Drake Av NW Prior Lake 195 09/19/1977 QBAA WEL Approximate 30 139-254190120 490587 Active Domestic Hoff, Thomas 3752 154th St NW Prior Lake 222 09/23/1991 QBUA WEL Approximate 31 139-253180500 745556 Active Piezometer City of Prior Lake 16551 Blind Lake Trail Prior Lake 310 10/11/2006 CJDN WEL Yes 32 139-254270110 470275 Active Domestic Stankovich, Rod 17216 Revere Wa Prior Lake 110 03/14/1991 QBUA WEL Approximate 33 139-49060105 424667 Active Domestic Giles, William 6055 Birch Rd Prior Lake 155 07/31/1986 OPDC WEL Yes 34 139-259360210 212524 Active Domestic Fitzgerald, Dennis Not Available Prior Lake 258 02/16/1962 OPDC WEL Uncertain 35 139-40110020 207490 Active Domestic Not Available 6096 Birch Rd Prior Lake 112 02/14/1972 QBUA WEL Yes 36 139-259010160 207306 Active Commercial Prior Lake Machine Shop 16801 Industrial Ln Prior Lake 122 11/01/1972 QBUA WEL Yes 37 139-251990020 129184 Active Domestic Johnson, Robert 16860 Welcome Av Prior Lake 100 07/04/1977 QBUA WEL Yes 38 139-253150010 721847 Active Monitoring Well for Well 9 City of Prior Lake Cottonwood La Prior Lake 665 04/29/2005 CTCE WEL Yes 39 139-253760060 522693 Active Domestic Bothof, Tim & Mary 15250 Foxtail Te NW Prior Lake 192 03/29/1993 QBUA WEL Yes 40 139-259010083 428646 Active Commercial Meesenbrink, John 5980 Credit River Rd Prior Lake 112 03/19/1986 QBUA WEL Yes 41 139-254770020 193323 Active Domestic Schweich Const.17070 Revere Wa Prior Lake 102 02/25/1983 QBUA WEL Yes 42 139-252060010 545185 Active Domestic Richardson, Harvard 15820 Arctic Ci NW Prior Lake 194 05/31/1994 QBUA WEL Yes 43 139-110470030 544928 Active Domestic Ruchta, Tom 17496 Revere Wa Prior Lake 232 08/03/1994 OPDC WEL Yes 44 139-40110010 207492 Active Domestic Not Available 6076 Birch Rd Prior Lake 100 04/19/1969 QBUA WEL Yes 45 139-110470020 441526 Active Domestic Lasalle, Todd 17410 Revere Wa Prior Lake 220 07/12/1988 OPDC WEL Yes 46 139-119120042 150152 Active Domestic Shimer, Steve 17944 Revere Wa Prior Lake 160 00/00/1986 Not Available WEL Yes 47 139-252060020 1000011811 Active Not Available Milwood Jan 15880 Artic Ci Prior Lake Not Available Not Available Not Available WEL Yes 48 139-119120043 1000012012 Active Not Available Zien Jerry 17808 Revere Wa Prior Lake Not Available Not Available Not Available WEL Yes 49 139-259340160 1000011812 Active Not Available Klimmek Richard 3020 154th St NW Prior Lake Not Available Not Available Not Available WEL Approximate 50 139-40110020 739419 Active Domestic Hadac, William 6096 Birch Rd Prior Lake 160 06/15/2006 Not Available WEL Yes Approximate - Parcel not found but location is approximately where that address would exist Uncertain - Not enough address information to verify location DR A F T Table C-4 PCSI Results - Potential Class V Well Locations in the DWSMAs City of Prior Lake Part 2 WHPP Amendment Page 1 of 1 P:\Mpls\23 MN\70\23701056 WHPP Amendment\WorkFiles\Part 2 WHPP Amendment\Work Files\Tables\Table C-4 Potential Class V Wells.xlsx PCSI ID PID No.Status Location Name Street Address City or Twp PCS Code Location Verified 51 139-251990030 Inactive Ervs Auto Body 16950 Welcome Ave SE Prior Lake CVMVW Yes 52 139-254430010 Active Wreck-A-Mended Auto Body 17158 Adelmann St SE Ste 1 Prior Lake CVMVW Yes 53 139-259010111 Active Pro Service Automotive Inc 16857 Welcome Ave SE Prior Lake CVMVW Yes 54 139-259360010 Active Westwood Elementary School 5370 Westwood Dr SE Prior Lake CVWWD Yes 55 139-254770030 Active Schermer Steel Fab & Abhe Svoboda Inc.17066 Revere Way Prior Lake CVWWD Yes 56 139-254770010 Active Bohnsack & Hennen Excavating 17072 Revere Way Prior Lake CVWWD Yes 57 139-254770020 Active Prior Lake Blacktop Inc.17070 Revere Way Prior Lake CVWWD Yes 58 139-251990020 Active Johnson Robert W 16860 Welcome Ave SE Prior Lake CVWWD Yes 59 139-259010030 Active Schneider Stephen C 5333 160th St SE Prior Lake CVWWD Yes Potential Contaminant Source (PCS) Codes: CVMVW - Motor Vehicle Waste Disposal Well (potential Class V) CVWWD = Large Capacity Waste Water Disposal Site DR A F T Table C-5 PCSI Results - Storage Tank Locations in the DWSMAs City of Prior Lake Part 2 WHPP Amendment Page 1 of 1 P:\Mpls\23 MN\70\23701056 WHPP Amendment\WorkFiles\Part 2 WHPP Amendment\Work Files\Tables\Table C-5 Storage Tanks and LUST Sites.xlsx PCSI ID PCS Code- Material Code PID Number MPCA Agency Interests ID Site Site Address City Tank Number Install Date Registration Date Tank Capacity Tank Status Tank Product/Product Released Above or Underground Release Discovered Date Release Report Date Complete Site Closure Date Location Verified 60 UST 139-259360010 30509 Twin Oaks Middle School 15860 Fish Point Rd SE Prior Lake 001 1/1/1968 8/9/1990 8,000 Removed Fuel Oil Underground Not Applicable Not Applicable Not Applicable Yes 61 UST 139-259360010 30509 Twin Oaks Middle School 15860 Fish Point Rd SE Prior Lake 002 5/21/1996 6/26/1996 8,000 Active Fuel Oil Underground Not Applicable Not Applicable Not Applicable Yes 61 UST 139-259360010 30509 Twin Oaks Middle School 15860 Fish Point Rd SE Prior Lake 003 8/20/2014 12/22/2014 4,000 Active Fuel Oil Underground Not Applicable Not Applicable Not Applicable Yes 62 UST 139-253150010 50688 City of Prior Lake 17073 Adelmann St SE Prior Lake 001 5/22/1996 11/1/1996 6,000 Active Diesel Underground Not Applicable Not Applicable Not Applicable Yes 62 UST 139-253150010 50688 City of Prior Lake 17073 Adelmann St SE Prior Lake 002 5/22/1996 11/1/1996 6,000 Active Gasoline Underground Not Applicable Not Applicable Not Applicable Yes 63 UST 139-255130020 149434 Kwik Trip #281 16751 Fish Point Rd Prior Lake 001 7/8/2015 Not Available 20,000 Active E-10 - 10% ethanol & 90% gas Underground Not Applicable Not Applicable Not Applicable Yes 63 UST 139-255130020 149434 Kwik Trip #281 16751 Fish Point Rd Prior Lake 002C 7/8/2015 Not Available 10,000 Active E15 gasoline Underground Not Applicable Not Applicable Not Applicable Yes 63 UST 139-255130020 149434 Kwik Trip #281 16751 Fish Point Rd Prior Lake 002C 7/8/2015 Not Available 10,000 Active Diesel Underground Not Applicable Not Applicable Not Applicable Yes 63 UST 139-255130020 149434 Kwik Trip #281 16751 Fish Point Rd Prior Lake 003C 7/8/2015 Not Available 10,000 Active Non-oxygenated gasoline Underground Not Applicable Not Applicable Not Applicable Yes 63 UST 139-255130020 149434 Kwik Trip #281 16751 Fish Point Rd Prior Lake 003C 7/8/2015 Not Available 10,000 Active E85 Underground Not Applicable Not Applicable Not Applicable Yes 64 LUST 139-259360010 30509 Twin Oaks Middle School 15860 Fish Point Rd SE Prior Lake Not Available Not Available Not Available Not Available Not Available Fuel Oil Underground 5/2/1996 5/3/1996 5/23/1997 Yes LUST - Leaking Underground Storage Tank UST - Underground Storage Tank DR A F T Table C-6 PCSI Results - Hazardous Waste Generators in the DWSMAs City of Prior Lake Part 2 WHPP Amendment Page 1 of 1 P:\Mpls\23 MN\70\23701056 WHPP Amendment\WorkFiles\Part 2 WHPP Amendment\Work Files\Tables\Table C-6 Haz Waste Generator Sites.xlsx Map ID PID Number Generator Address City Generator Size Generator Type Generator Status PCS Code Location Verified 65 139-259360010 Twin Oaks Middle School 15860 Fish Point Rd SE Prior Lake Very Small Quantity Generator Not Available Active HWG Yes 66 139-259360740 Hidden Oaks Middle School 15855 Fish Point Rd SE Prior Lake Very Small Quantity Generator Not Available Active HWG Yes DR A F T Table C-7 PCSI Results - Chemical Storage Sites in the DWSMAs City of Prior Lake Part 2 WHPP Amendment Page 1 of 1 P:\Mpls\23 MN\70\23701056 WHPP Amendment\WorkFiles\Part 2 WHPP Amendment\Work Files\Tables\Table C-7 Chemical Storage Sites.xlsx PCSI ID PID Number CAS Number Facility Name Site Address Chemicals PCS Code - Material Code Location Verified 67 139-259360010 700720009 Twin Oaks Middle School 15860 Fish Point Rd FUEL OIL #2 (3)STOR-F000 Yes 68 139-259360740 700720016 Hidden Oaks Middle School 15855 Fish Point Rd FUEL OIL, [NO. 2] (3)STOR-F000 Yes 69 139-253150010 700720019 Maintenance Center 17073 Adelmann Street SE 87 OCTANE UNLEADED (3); DIESEL FUEL (3)STOR-F000 Yes Non-Agricultural Chemicals DR A F T Table C-8 PCSI Results - SSTS in the DWSMAs City of Prior Lake Part 2 WHPP Amendment Page 1 of 1 P:\Mpls\23 MN\70\23701056 WHPP Amendment\WorkFiles\Part 2 WHPP Amendment\Work Files\Tables\Table C-8 SSTS.xlsx MapID PID Number Name Address City Pumper Name Gallons Pumped PCS Code Location Verified 70 139-259010190 Affordable R&R Services Inc.5871 160th St SE Prior Lake Not Available Not Available SSTS Yes DR A F T Table C-9 PCSI Results - Cemetery Locations in the DWSMAs City of Prior Lake Part 2 WHPP Amendment Page 1 of 1 P:\Mpls\23 MN\70\23701056 WHPP Amendment\WorkFiles\Part 2 WHPP Amendment\Work Files\Tables\Table C-9 Cemetery Locations.xlsx PCSI ID PID Number Name Address City Status PCS Code Location Verified 71 139-251880010 St Michael's Cemetery 5437 SE 160 St Prior Lake Active GRV Yes DR A F T Table C-10 High Capacity Wells within One Mile of the DWSMAs City of Prior Lake Part 2 WHPP Amendment Page 1 of 1 P:\Mpls\23 MN\70\23701056 WHPP Amendment\WorkFiles\Part 2 WHPP Amendment\Work Files\Tables\Table C-10 High Capacity Wells Within 1 Mile of DWSMA.xlsx PCSI ID Unique ID Status Permittee Use Aquifer Permitted Volume MGY 3 207308 Active Prior Lake, City Of Municipal/Public Water Supply Jordan 900 4 110452 Active Prior Lake, City Of Municipal/Public Water Supply Jordan 900 5 420954 Active Prior Lake, City Of Municipal/Public Water Supply Jordan 900 6 603083 Active Prior Lake, City Of Municipal/Public Water Supply Jordan 900 7 655913 Active Prior Lake, City Of Municipal/Public Water Supply Tunnel City-Wonewoc 900 8 686263 Active Prior Lake, City Of Municipal/Public Water Supply Prairie du Chien 900 9 686264 Active Prior Lake, City Of Municipal/Public Water Supply Prairie du Chien 900 208833 208833 Active Cleary Lake Golf Course Basin (Lake) Level Maintenance Jordan 33 208833 208833 Active Cleary Lake Golf Course Golf Course Irrigation Jordan 33 253021 253021 Active Shakopee Mdewakanton Sioux Community Public Supply/Non-Community Tunnel City-Eau Claire Not Available 525938 525938 Active Shakopee Mdewakanton Sioux Community Public Supply/Non-Community Jordan Not Available 723530 723530 Active Shakopee Mdewakanton Sioux Community Public Supply/Non-Community Jordan Not Available DR A F T Figures !H !H !H !H !H !H !H 47 9 5 8 3 6 Markley Cate'sor Hidden Rice Keup's Buck Lower Prior Cleary Spring Little Prior Upper Prior Crystal Arctic Blind ¨©87 ¨©81 456712 456744 456782 456783 456723 456721 456721 13 13 SavageCentralDWSMA ShakopeeDWSMA ShakopeeDWSMA Prior Lake Savage Ba r r F o o t e r : A r c G I S 1 0 . 4 . 1 , 2 0 1 7 - 0 7 - 2 4 1 7 : 4 2 F i l e : I : \ P r o j e c t s \ 2 3 \ 7 0 \ 1 0 5 6 \ M a p s \ R e p o r t s \ W H P P I I _ 2 0 1 7 \ F i g C - 0 1 D W S M A L o c a t i o n . m x d U s e r : j j l 2 MUNICIPAL WELLS, DWSMAs,AND AQUIFER VULNERABILITYPart 2 WHPP AmendmentCity of Prior LakeScott County, MN FIGURE C-1 0 875 1,750 Feet !;N !H Municipal Well Municipal Boundary Prior Lake DWSMA Nearby DWSMAs DWSMA Vulnerability High Moderate Low FEMA Flood Zone 0.2% Annual ChanceFlood Hazard A AE X 3 - Municipal Well Location PCSI ID(PCSI ID refers to Table C-3) Image Source: FSA (2015) A - Areas with a 1% annual chance of flooding and a 26% chanceof flooding over the life of a 30-year mortgage. Because detailedanalyses are not performed for such areas; no depths or base floodelevations are shown within these zones. AE - The base floodplain where base flood elevations are provided.AE Zones are now used on new format FIRMs instead of A1-A30Zones. X - Area of minimal flood hazard, usually depicted on FIRMs as abovethe 500-year flood level. Zone C may have ponding and localdrainage problems that don't warrant a detailed study ordesignation as base floodplain. Zone X is the area determinedto be outside the 500-year flood and protected by levee from100-year flood. DR A F T !H !H !H !H !H !H !H 47 9 5 8 3 6 Markley Cate'sor Hidden Rice Keup's Buck Lower Prior Cleary Cleary Spring Little Prior Upper Prior Crystal ¨©87 ¨©81 456712 456744 456782 456783 456723 456721 13 13 Prior Lake Savage Ba r r F o o t e r : A r c G I S 1 0 . 4 . 1 , 2 0 1 7 - 0 7 - 2 6 1 2 : 5 2 F i l e : I : \ P r o j e c t s \ 2 3 \ 7 0 \ 1 0 5 6 \ M a p s \ R e p o r t s \ W H P P I I _ 2 0 1 7 \ F i g C - 0 2 B e d r o c k S u b c r o p . m x d U s e r : j j l 2 BEDROCK SUBCROPPart 2 WHPP AmendmentCity of Prior LakeScott County, MN FIGURE C-2 0 875 1,750 Feet !;N !H Municipal Well Municipal Boundary Prior Lake DWSMA Bedrock Subcrop* Jordan Sandstone Prairie du Chien Group St. Lawrence Formation St. Peter Sandstone Tunnel City Group Wonewoc Sandstone * Minnesota Geological Survey 3 - Municipal Well Location PCSI ID(PCSI ID refers to Table C-3) DR A F T !H !H !H !H !H !H !H 47 9 5 8 3 6 Markley Cate'sor Hidden Rice Keup's Buck Lower Prior Cleary Cleary Spring Little Prior Upper Prior Crystal ¨©87 ¨©81 456712 456744 456782 456783 456723 456721 13 13 Prior Lake Savage Ba r r F o o t e r : A r c G I S 1 0 . 4 . 1 , 2 0 1 7 - 0 7 - 2 2 1 2 : 1 6 F i l e : I : \ P r o j e c t s \ 2 3 \ 7 0 \ 1 0 5 6 \ M a p s \ R e p o r t s \ W H P P I I _ 2 0 1 7 \ F i g C - 0 3 S o i l C o v e r . m x d U s e r : j j l 2 SOIL COVERPart 2 WHPP AmendmentCity of Prior LakeScott County, MN FIGURE C-3 0 875 1,750 Feet !;N !H Municipal Well Municipal Boundary Prior Lake DWSMA * SSURGO Data (U.S. Dept. of Agriculture,Natural Resources Conservation Service) 3 - Municipal Well Location PCSI ID(PCSI ID refers to Table C-3) Soils by Component (SSURGO)* Beach materials and muck Blue Earth mucky silt loam Estherville loam and sandy loam Estherville loam Estherville sandy loam Estherville-Burnsville complex Glencoe silty clay loam Hayden loam Hayden sandy clay loam Hayden sandy loam Hayden soils Houghton muck Klossner muck Le Sueur loam Le Sueur-Lester complex Lester loam Marsh Pits, gravel Salida gravelly sandy loam Terrace escarpments Terril loam Wadena loam Water Webster-Glencoe silty clay loams DR A F T !H !H !H !H !H !H !H 47 9 5 8 3 6 Markley Cate'sor Hidden Rice Keup's Buck Lower Prior Cleary Cleary Spring Little Prior Upper Prior Crystal ¨©87 ¨©81 456712 456744 456782 456783 456723 456721 13 13 Prior Lake Savage Ba r r F o o t e r : A r c G I S 1 0 . 4 . 1 , 2 0 1 7 - 0 7 - 2 4 1 1 : 4 2 F i l e : I : \ P r o j e c t s \ 2 3 \ 7 0 \ 1 0 5 6 \ M a p s \ R e p o r t s \ W H P P I I _ 2 0 1 7 \ F i g C - 0 4 S u r f i c i a l S o i l P e r m e a b i l i t y . m x d U s e r : j j l 2 SURFICIAL SOILPERMEABILITYPart 2 WHPP AmendmentCity of Prior LakeScott County, MN FIGURE C-4 0 875 1,750 Feet !;N !H Municipal Well Municipal Boundary Prior Lake DWSMA Soil Permeability Classification* Not rated or not available A A/D B B/D C C/D * SSURGO Data (U.S. Dept. of Agriculture,Natural Resources Conservation Service) 3 - Municipal Well Location PCSI ID(PCSI ID refers to Table C-3) The soils in the United States are assigned to four groups (A, B, C, and D) and three dual classes (A/D, B/D, and C/D). The groups are defined as follows: Group A. Soils having a high infiltration rate (low runoff potential) when thoroughly wet. These consist mainly of deep, well drained to excessively drained sands or gravelly sands. These soils have a high rate of water transmission. Group B. Soils having a moderate infiltration rate when thoroughly wet. These consist chiefly of moderately deep or deep, moderately well drained or well drained soils that have moderately fine texture to moderately coarse texture. These soils have a moderate rate of water transmission. Group C. Soils having a slow infiltration rate when thoroughly wet. These consist chiefly of soils having a layer that impedes the downward movement of water or soils of moderately fine texture or fine texture. These soils have a slow rate of water transmission. Group D. Soils having a very slow infiltration rate (high runoff potential) when thoroughly wet. These consist chiefly of clays that have a high shrink-swell potential, soils that have a high water table, soils that have a claypan or clay layer at or near the surface, and soils that are shallow over nearly impervious material. These soils have a very slow rate of water transmission. If a soil is assigned to a dual hydrologic group (A/D, B/D, or C/D), the first letter is for drained areas and the second is for undrained areas. Only the soils that in their natural condition are in group D are assigned to dual classes. DR A F T !H !H !H !H !H !H !H 47 9 5 8 3 6 Markley Cate'sor Hidden Rice Keup's Buck Lower Prior Cleary Cleary Spring Little Prior Upper Prior Crystal ¨©87 ¨©81 456712 456744 456782 456783 456723 456721 13 13 Prior Lake Savage Ba r r F o o t e r : A r c G I S 1 0 . 4 . 1 , 2 0 1 7 - 0 7 - 2 2 1 2 : 2 2 F i l e : I : \ P r o j e c t s \ 2 3 \ 7 0 \ 1 0 5 6 \ M a p s \ R e p o r t s \ W H P P I I _ 2 0 1 7 \ F i g C - 0 5 C u r r e n t L a n d U s e - C h a r t . m x d U s e r : j j l 2 CURRENT LAND USEPart 2 WHPP AmendmentCity of Prior LakeScott County, MN FIGURE C-5 0 875 1,750 Feet !;N !H Municipal Well Municipal Boundary Prior Lake DWSMA Current Land Use* Farmstead Single Family Detached Single Family Attached Multifamily Retail and Other Commercial Office Industrial and Utility Institutional Park, Recreational or Preserve Golf Course Agricultural Undeveloped Water * Land Use Data (Met Council2010 Generalized Land Use) 3 - Municipal Well Location PCSI ID(PCSI ID refers to Table C-3) DR A F T Ba r r F o o t e r : P : \ M p l s \ 2 3 M N \ 7 0 \ 2 3 7 0 1 0 5 6 W H P P A m e n d m e n t \ W o r k F i l e s \ P a r t 2 W H P P A m e n d m e n t \ W o r k F i l e s \ F i g u r e s \ F i g C - 0 6 C u r r e n t Z o n i n g . p d f CURRENT ZONING Part 2 WHPP Amendment City of Prior Lake Scott County, MN FIGURE C-6 Source: City of Prior Lake DR A F T !> !> !> !> !> !>!> !> !> !> !> !> !> !> !> !> !> !> !> !> !> !> !> !> !> !> !> !> !> !> !> !> !> !> !> !> !> !> !> !> !> !> !> !H !H !H !H !H !H !H 1 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 2 42 43 44 45 46 47 48 49 50 47 9 5 8 3 6 Markley Cate'sor Hidden Rice Keup's Buck Lower Prior Cleary Cleary Spring Little Prior Upper Prior Crystal ¨©87 ¨©81 456712 456744 456782 456783 456723 456721 456721 13 13 Prior Lake Savage Ba r r F o o t e r : A r c G I S 1 0 . 4 . 1 , 2 0 1 7 - 0 7 - 2 5 1 8 : 3 5 F i l e : I : \ P r o j e c t s \ 2 3 \ 7 0 \ 1 0 5 6 \ M a p s \ R e p o r t s \ W H P P I I _ 2 0 1 7 \ F i g C - 0 7 W e l l L o c a t i o n s . m x d U s e r : j j l 2 WELL LOCATIONSPart 2 WHPP AmendmentCity of Prior LakeScott County, MN FIGURE C-7 0 875 1,750 Feet !;N !H Municipal Well Other Wells by Status !>Active !>Inactive !>Unknown Municipal Boundary Prior Lake DWSMA DWSMA Vulnerability High Moderate Low 10 - Well Location PCSI ID(PCSI ID refers to Table C-3) 3 - Municipal Well Location PCSI ID(PCSI ID refers to Table C-3) DR A F T !# !# !# !# !#!#!# !# !# !H !H !H !H !H !H !H 51 52 53 54 5556 57 58 59 47 9 5 8 3 6 Markley Cate'sor Hidden Rice Keup's Buck Lower Prior Cleary Cleary Spring Little Prior Upper Prior Crystal ¨©87 ¨©81 456712 456744 456782 456783 456723 456721 456721 13 13 Prior Lake Savage Ba r r F o o t e r : A r c G I S 1 0 . 4 . 1 , 2 0 1 7 - 0 7 - 2 5 1 8 : 2 5 F i l e : I : \ P r o j e c t s \ 2 3 \ 7 0 \ 1 0 5 6 \ M a p s \ R e p o r t s \ W H P P I I _ 2 0 1 7 \ F i g C - 0 8 P o t e n t i a l C l a s s V L o c a t i o n s . m x d U s e r : j j l 2 POTENTIAL CLASS VWELL LOCATIONSPart 2 WHPP AmendmentCity of Prior LakeScott County, MN FIGURE C-8 0 875 1,750 Feet !;N !H Municipal Well !#Potential Class VWell Locations Municipal Boundary Prior Lake DWSMA DWSMA Vulnerability High Moderate Low 56 - Potential Class V Well LocationPCSI ID (PCSI ID refers to Table C-4) 3 - Municipal Well Location PCSI ID(PCSI ID refers to Table C-3) DR A F T !P !P !P !P!< !H !H !H !H !H !H !H 47 9 5 8 3 6 Markley Cate'sor Hidden Rice Keup's Buck Lower Prior Cleary Cleary Spring Little Prior Upper Prior Crystal ¨©87 ¨©81 456712 456744 456782 456783 456723 456721 456721 13 13 61 62 63 6064Prior Lake Savage Ba r r F o o t e r : A r c G I S 1 0 . 4 . 1 , 2 0 1 7 - 0 7 - 2 2 1 2 : 2 3 F i l e : I : \ P r o j e c t s \ 2 3 \ 7 0 \ 1 0 5 6 \ M a p s \ R e p o r t s \ W H P P I I _ 2 0 1 7 \ F i g C - 0 9 S t o r a g e T a n k L o c a t i o n s . m x d U s e r : j j l 2 STORAGE TANKLOCATIONSPart 2 WHPP AmendmentCity of Prior LakeScott County, MN FIGURE C-9 0 875 1,750 Feet !;N !H Municipal Well !< MPCA LUST Site Tank Location !P Active !P Removed Municipal Boundary Prior Lake DWSMA DWSMA Vulnerability High Moderate Low 63 - Tank Location PCSI ID(PCSI ID refers to Table C-5) 3 - Municipal Well Location PCSI ID(PCSI ID refers to Table C-3) DR A F T !P !P !H !H !H !H !H !H !H 47 9 5 8 3 6 Markley Cate'sor Hidden Rice Keup's Buck Lower Prior Cleary Cleary Spring Little Prior Upper Prior Crystal ¨©87 ¨©81 456712 456744 456782 456783 456723 456721 456721 13 13 65 66 Prior Lake Savage Ba r r F o o t e r : A r c G I S 1 0 . 4 . 1 , 2 0 1 7 - 0 7 - 2 2 1 2 : 3 8 F i l e : I : \ P r o j e c t s \ 2 3 \ 7 0 \ 1 0 5 6 \ M a p s \ R e p o r t s \ W H P P I I _ 2 0 1 7 \ F i g C - 1 0 H a z a r d o u s W a s t e G e n e r a t o r L o c a t i o n s . m x d U s e r : j j l 2 HAZARDOUS WASTEGENERATOR LOCATIONSPart 2 WHPP AmendmentCity of Prior LakeScott County, MN FIGURE C-10 0 875 1,750 Feet !;N !H Municipal Well !P Hazardous WasteGenerator Location Municipal Boundary Prior Lake DWSMA DWSMA Vulnerability High Moderate Low 65 - Hazardous Waste GeneratorLocation PCSI ID(PCSI ID refers to Table C-6) 3 - Municipal Well Location PCSI ID(PCSI ID refers to Table C-3) DR A F T #0 #0 #0 !H !H !H !H !H !H !H 47 9 5 8 3 6 Markley Cate'sor Hidden Rice Keup's Buck Lower Prior Cleary Cleary Spring Little Prior Upper Prior Crystal ¨©87 ¨©81 456712 456744 456782 456783 456723 456721 456721 13 13 67 68 69 Prior Lake Savage Ba r r F o o t e r : A r c G I S 1 0 . 4 . 1 , 2 0 1 7 - 0 7 - 2 2 1 2 : 3 8 F i l e : I : \ P r o j e c t s \ 2 3 \ 7 0 \ 1 0 5 6 \ M a p s \ R e p o r t s \ W H P P I I _ 2 0 1 7 \ F i g C - 1 1 C h e m i c a l S t o r a g e L o c a t i o n s . m x d U s e r : j j l 2 CHEMICAL STORAGELOCATIONSPart 2 WHPP AmendmentCity of Prior LakeScott County, MN FIGURE C-11 0 875 1,750 Feet !;N !H Municipal Well #0 Chemical StorageLocation Municipal Boundary Prior Lake DWSMA DWSMA Vulnerability High Moderate Low 68 - Chemical Storage Location PCSI ID(PCSI ID refers to Table C-7) 3 - Municipal Well Location PCSI ID(PCSI ID refers to Table C-3) DR A F T XY !H !H !H !H !H !H !H 47 9 5 8 3 6 Markley Cate'sor Hidden Rice Keup's Buck Lower Prior Cleary Cleary Spring Little Prior Upper Prior Crystal ¨©87 ¨©81 456712 456744 456782 456783 456723 456721 456721 13 13 70 Prior Lake Savage Ba r r F o o t e r : A r c G I S 1 0 . 4 . 1 , 2 0 1 7 - 0 7 - 2 2 1 2 : 4 0 F i l e : I : \ P r o j e c t s \ 2 3 \ 7 0 \ 1 0 5 6 \ M a p s \ R e p o r t s \ W H P P I I _ 2 0 1 7 \ F i g C - 1 2 S S T S L o c a t i o n s . m x d U s e r : j j l 2 SUBSURFACE SEWAGETREATMENT SYSTEMSPart 2 WHPP AmendmentCity of Prior LakeScott County, MN FIGURE C-12 0 875 1,750 Feet !;N !H Municipal Well XY SSTS Location Municipal Boundary Prior Lake DWSMA DWSMA Vulnerability High Moderate Low 70 - SSTS Location PCSI ID(PCSI ID refers to Table C-8) 3 - Municipal Well Location PCSI ID(PCSI ID refers to Table C-3) DR A F T " !H !H !H !H !H !H !H 47 9 5 8 3 6 Markley Cate'sor Hidden Rice Keup's Buck Lower Prior Cleary Cleary Spring Little Prior Upper Prior Crystal ¨©87 ¨©81 456712 456744 456782 456783 456723 456721 456721 13 13 71 Prior Lake Savage Ba r r F o o t e r : A r c G I S 1 0 . 4 . 1 , 2 0 1 7 - 0 7 - 2 2 1 2 : 3 8 F i l e : I : \ P r o j e c t s \ 2 3 \ 7 0 \ 1 0 5 6 \ M a p s \ R e p o r t s \ W H P P I I _ 2 0 1 7 \ F i g C - 1 3 C e m e t e r y L o c a t i o n s . m x d U s e r : j j l 2 CEMETERY LOCATIONSPart 2 WHPP AmendmentCity of Prior LakeScott County, MN FIGURE C-13 0 875 1,750 Feet !;N !H Municipal Well "Cemetery Location Municipal Boundary Prior Lake DWSMA DWSMA Vulnerability High Moderate Low 71 - Cemetery Location PCSI ID(PCSI ID refers to Table C-9) 3 - Municipal Well Location PCSI ID(PCSI ID refers to Table C-3) DR A F T !P !P !P !P !P !P!P !P!P !P!P!P 3 4 5 6 7 8 9 208833 525938 253021 723530 Markley Cate's orHidden Rice Keup's Buck Lower Prior Lower Prior Howard Howard Cleary Cleary Spring Little Prior Upper Prior Crystal ¨©87 ¨©81 456744 456712 456721 456782 456783 456723 456721 456727 13 13 Prior Lake Savage Shakopee Ba r r F o o t e r : A r c G I S 1 0 . 4 . 1 , 2 0 1 7 - 0 7 - 2 5 1 7 : 5 7 F i l e : I : \ P r o j e c t s \ 2 3 \ 7 0 \ 1 0 5 6 \ M a p s \ R e p o r t s \ W H P P I I _ 2 0 1 7 \ F i g C - 1 4 H i g h C a p a c i t y W e l l s w i t h i n 1 M i l e o f t h e D W S M A . m x d U s e r : j j l 2 HIGH CAPACITY WELLS WITHIN ONE MILE OF THE DWSMAs Part 2 WHPP Amendment City of Prior LakeScott County, MN FIGURE C-14 0 875 1,750 Feet !;N Permitted WaterAppropriations (MPARS)Within 1 Mile of DWSMA !P Basin (Lake)Level Maintenance !P Golf CourseIrrigation !P Municipal/PublicWater Supply !P Public Supply/Non-Community Municipal Boundary Prior Lake DWSMA DWSMA Vulnerability High Moderate Low 3 - MPARS Location PCSI ID(PCSI ID refers to Table C-10) DR A F T !H !H !H !H !H !H !H 47 9 5 8 3 6 Markley Cate'sor Hidden Rice Keup's Buck Lower Prior Cleary Cleary Spring Little Prior Upper Prior Crystal ¨©87 ¨©81 456712 456744 456782 456783 456723 456721 13 13 Prior Lake Savage Ba r r F o o t e r : A r c G I S 1 0 . 4 . 1 , 2 0 1 7 - 0 7 - 2 4 1 6 : 2 8 F i l e : I : \ P r o j e c t s \ 2 3 \ 7 0 \ 1 0 5 6 \ M a p s \ R e p o r t s \ W H P P I I _ 2 0 1 7 \ F i g C - 1 5 H i s t o r i c a l L a n d U s e . m x d U s e r : j j l 2 HISTORICAL LAND USEPart 2 WHPP AmendmentCity of Prior LakeScott County, MN FIGURE C-15 0 875 1,750 Feet !;N !H Municipal Well Municipal Boundary Prior Lake DWSMA Historical (1984) Land Use* Single Family Residential Multi-Family Residential Commercial Industrial Public/Semi-Public Parks & Recreation Vacant/Agricultural Open Water Bodies Farmsteads Public/Semi-Public * Historical Land Use Data(Metropolitan Council) 3 - Municipal Well Location PCSI ID(PCSI ID refers to Table C-3) DR A F T !H !H !H !H !H !H !H 4 7 9 5 8 3 6 MarkleyCate's or Hidden Ri c e Ke u p ' s Bu c k Lo w e r P r i o r ClearyCleary Sp r i n g Li t t l e P r i o r Up p e r P r i o r Cr y s t a l ¨©87 ¨©81 4 5 6 7 12 4 5 6 7 44 4 5 6 7 82 4 5 6 7 83 4 5 6 7 23 4 5 6 7 21 13 13 Pr i o r L a k e Savage B a r r F o o t e r : A r c G I S 1 0 . 4 . 1 , 2 0 1 7 - 0 7 - 2 6 1 2 : 5 1 F i l e : I : \ P r o j e c t s \ 2 3 \ 7 0 \ 1 0 5 6 \ M a p s \ R e p o r t s \ W H P P I I _ 2 0 1 7 \ F i g C - 1 6 N a t u r a l G a s a n d P e t r o l e u m P i p e l i n e s . m x d U s e r : j j l 2 NATURAL GAS AND PETROLEUM PIPELINES Part 2 WHPP Amendment City of Prior Lake Scott County, MN FIGURE C-160 8 7 5 1 , 7 5 0 Feet!;N!H Municipal Well Natural Gas Pipeline*Petroleum Pipeline*Municipal Boundary Prior Lake DWSMA * Minnesota Office of Pipeline Safety (MnOPS)3 - Municipal Well Location PCSI ID (PC SI ID refers to Table C-3) DRAFT Ba r r Fo o t e r : P: \ M p l s \ 2 3 M N \ 7 0 \ 2 3 7 0 1 0 5 6 W H P P A m e n d m e n t \ W o r k F i l e s \ P a r t 2 W H P P A m e n d m e n t \ W o r k F i l e s \ F i g u r e s \ F i g C - 1 7 Sa n i t a r y S e w e r M a p .p d f SANITARY SEWER MAP Part 2 WHPP Amendment City of Prior Lake Scott County, MN FIGURE C-17 Source: City of Prior Lake DR A F T Ba r r Fo o t e r : P: \ M p l s \ 2 3 M N \ 7 0 \ 2 3 7 0 1 0 5 6 W H P P A m e n d m e n t \ W o r k F i l e s \ P a r t 2 W H P P A m e n d m e n t \ W o r k F i l e s \ F i g u r e s \ F i g C - 18 S t o r m S e w e r M a p .p d f STORM SEWER MAP Part 2 WHPP Amendment City of Prior Lake Scott County, MN FIGURE C-18 Source: City of Prior Lake DR A F T Attachment C-1 Precipitation Data Mi n n e s o t a C l i m a t o l o g y W o r k i n g G r o u p St a t e C l i m a t o l o g y O f f i c e - D N R D i v i s i o n o f E c o l o g i c a l a n d W a t e r R e s o u r c e s University of Minnesota ho m e | c u r r e n t c o n d i t i o n s | j o u r n a l | p a s t d a t a | s u m m a r i e s | a g r i c u l t u r e | o t h e r s i t e s | contact us | search | An n u a l R e p o r t s o f M o n t h l y P r e c i p i t a t i o n T o t a l s Th i s a p p l i c a t i o n c r e a t e s a n n u a l s u m m a r ie s o f p r e c i p i t a t i o n d a t a g a t h e r e d b y vo l u n t e e r - b a s e d o b s e r v a t i o n n e tw o r k s t h r o u g h o u t M i n n e s o t a . T h e d a t a p r e s e n t e d a r e m o n t h l y to t a l s a n d t h e d a t a a r e g r o u p e d b y c o u n t y . O b s e r v e r l o c a t i o n s a r e d e s c r i b e d u s i n g t o w n s h i p , r a n g e , a n d s e c t i o n n u m b e r s . Ch o o s e a c o u n t y a n d y e a r , t h e n c l i c k o n "A n n u a l r e p o r t " . S CO T T  20 1 2  An n u a l r e p o r t 20 1 2 S C O T T M o n t h l y P r e c i p i t a t i o n , T o t a l s c c t t t r r s s o o o o o o o o n n n n J A N F E B M A R A P R M A Y J U N J U L A U G S E P O C T N O V D E C A G R H Y D A N N G R O 7 0 1 1 3 N 2 1 W 2 6 S W C D . 6 0 1 . 9 1 1 . 8 0 2 . 8 2 8 . 6 2 8 . 6 7 3 . 5 9 6 . 4 4 . 8 9 1 . 7 4 . 5 9 1 . 5 0 3 7 . 7 8 3 7 . 8 1 3 9 . 1 7 2 8 . 2 1 7 0 1 1 3 N 2 2 W 3 1 S W C D . 5 9 1 . 9 4 1 . 6 4 3 . 2 0 8 . 9 8 7 . 5 2 4 . 1 2 5 . 3 2 . 5 9 1 . 3 2 . 6 2 1 . 1 4 3 5 . 9 1 3 6 . 0 7 3 6 . 9 8 2 6 . 5 3 7 0 1 1 3 N 2 3 W 3 0 N E W P R A G M O S Q 5 . 6 0 . 5 3 1 . 6 4 7 0 1 1 3 N 2 4 W 5 S W C D . 3 8 1 . 8 0 1 . 6 1 2 . 8 1 1 2 . 5 2 7 . 8 8 3 . 3 1 2 . 4 9 . 5 5 1 . 5 3 . 5 8 * 2 6 . 7 5 7 0 1 1 3 N 2 4 W 3 6 S W C D . 8 0 3 . 6 8 1 0 . 7 5 6 . 2 4 6 . 7 0 4 . 3 1 . 8 5 1 . 6 7 . 5 5 1 . 1 1 2 8 . 8 5 7 0 1 1 3 N 2 5 W 1 1 B E L L E P L M O S Q 2 . 4 5 9 . 8 3 7 . 4 6 4 . 1 0 2 . 3 1 . 7 6 1 . 8 7 2 4 . 4 6 7 0 1 1 3 N 2 5 W 1 3 S W C D . 3 6 1 . 7 9 1 . 8 1 2 . 5 8 1 1 . 4 2 7 . 3 3 4 . 3 7 3 . 4 5 . 6 7 1 . 9 7 . 5 3 1 . 9 8 3 5 . 9 7 3 6 . 1 2 3 8 . 2 6 2 7 . 2 4 7 0 1 1 3 N 2 5 W 2 9 S W C D . 5 0 1 . 5 4 1 . 5 7 2 . 9 0 1 0 . 3 2 7 . 2 8 3 . 1 3 2 . 5 3 . 7 4 1 . 4 6 . 7 9 1 . 3 6 3 2 . 4 3 3 2 . 7 4 3 4 . 1 2 2 4 . 0 0 7 0 1 1 4 N 2 1 W 5 S W C D . 6 0 1 . 7 7 1 . 9 1 3 . 2 8 9 . 9 5 5 . 5 1 3 . 4 6 1 . 7 6 . 5 9 1 . 2 1 . 5 8 1 . 0 9 3 0 . 6 8 3 0 . 4 8 3 1 . 7 1 2 1 . 2 7 7 0 1 1 4 N 2 2 W 3 S W C D 1 . 7 5 1 . 6 7 2 . 5 3 1 1 . 5 6 6 . 2 6 2 . 9 7 1 . 3 3 . 5 2 1 . 2 8 . 6 2 1 . 5 4 2 2 . 6 4 7 0 1 1 4 N 2 2 W 4 B Y R G . 6 8 1 . 9 7 1 . 5 8 2 . 8 8 1 0 . 2 3 6 . 4 9 2 . 9 2 1 . 6 1 . 7 2 1 . 3 5 . 6 6 1 . 5 5 3 0 . 7 1 3 0 . 9 4 3 2 . 6 4 2 1 . 9 7 7 0 1 1 4 N 2 2 W 1 6 W S D . 6 2 1 . 7 0 7 0 1 1 4 N 2 2 W 2 8 W S D 1 . 9 7 7 0 1 1 4 N 2 2 W 3 2 S W C D . 5 9 2 . 0 9 1 . 2 8 3 . 2 2 1 0 . 2 6 6 . 3 7 3 . 3 0 2 . 6 5 . 5 8 1 . 5 2 . 6 5 1 . 0 2 3 2 . 5 5 3 2 . 6 7 3 3 . 5 3 2 3 . 1 6 7 0 1 1 4 N 2 3 W 8 J O R D A N M O S Q 2 . 6 7 1 0 . 4 8 6 . 8 0 2 . 1 3 2 . 7 6 . 6 7 2 . 0 3 2 2 . 8 4 7 0 1 1 4 N 2 3 W 3 0 J O R D A N N W S . 6 6 2 . 0 1 1 . 4 3 2 . 7 8 1 1 . 0 8 7 . 3 9 2 . 6 1 3 . 2 7 . 5 8 1 . 7 8 . 4 7 1 . 5 1 3 3 . 9 6 3 3 . 9 9 3 5 . 5 7 2 4 . 9 3 7 0 1 1 4 N 2 4 W 3 5 S W C D . 3 6 1 . 6 7 1 . 2 0 2 . 7 6 1 1 . 5 4 7 . 5 7 2 . 6 7 3 . 4 6 . 6 4 1 . 4 9 3 3 . 4 0 3 3 . 3 8 2 5 . 8 8 7 0 1 1 5 N 2 1 W 2 7 P R I O R L A M O S Q 3 . 5 6 1 0 . 2 0 5 . 2 0 4 . 2 0 1 . 5 0 . 7 4 1 . 2 5 2 1 . 8 4 7 0 1 1 5 N 2 2 W 1 7 S W C D . 7 1 1 . 9 4 1 . 5 2 2 . 7 2 co u n t y a v e r a g e s . 5 7 1 . 8 5 1 . 5 9 2 . 9 3 1 0 . 5 2 6 . 9 3 3 . 5 7 3 . 1 7 . 6 6 1 . 5 7 . 6 1 1 . 4 6 3 3 . 7 1 3 3 . 8 0 3 5 . 2 5 2 4 . 7 0 # o f o b s 1 2 1 2 1 2 1 6 1 5 1 5 1 5 1 6 1 6 1 6 1 2 1 2 9 9 8 1 5 ◾ Da t a a s r e c e i v e d a n d d i g i t i z e d o n o r b e f o r e 9 / 1 4 / 2 0 1 6 . Al l v a l u e s a r e i n i n c h e s . ◾ 'c c t t t r r s s ' i s c o u n t y - t o w n s h i p - r a n g e - s e ct i o n n u m b e r , ' o o o o o o o o ' i s c o m m u n i t y n a m e (w h e r e a p p l i c a b l e ) , ' n n n n ' i s n e t w o r k t y p e . ◾ 'A G R ' , ' H Y D ' , a n d ' A N N ' a r e 1 2 m o n t h p r e c i p it a t i o n t o t a l s s t a r t i n g i n S e p 2 0 1 1 , O c t 20 1 1 , a n d J a n 2 0 1 2 , r e s p e c t i v e l y . ' G R O ' i s gr o w i n g s e a s o n ( M a y 2 0 1 2 t h r u S e p 2 0 1 2 ) pr e c i p i t a t i o n t o t a l . ◾ '* ' d e n o t e s a p a r t i a l m o n t h l y r e c o r d , ' e ' d e n o t e s t h at v a l u e i s w h o l l y o r p a r t i a l l y e s t i m a t e d . ◾ Pr e p a r e d b y : S t a t e C l i m a t o l o g y O ff i c e - D N R W a t e r s , p h o n e : 6 5 1 - 2 9 6 - 42 1 4 , w e b : h t t p : / / c l i m a t e . u m n . e d u Page 1 o f 2 An n u a l R e p o r t s o f M o n t h l y P r e c i p i t a t i o n T o t a l s 9 /14 /201 6 ht t p : / / c l i m a t e . u m n . e d u / h i d e na n n u a l / H I D E N a n n u a l . a s p Mi n n e s o t a C l i m a t o l o g y W o r k i n g G r o u p St a t e C l i m a t o l o g y O f f i c e - D N R D i v i s i o n o f E c o l o g i c a l a n d W a t e r R e s o u r c e s University of Minnesota ho m e | c u r r e n t c o n d i t i o n s | j o u r n a l | p a s t d a t a | s u m m a r i e s | a g r i c u l t u r e | o t h e r s i t e s | contact us | search | An n u a l R e p o r t s o f M o n t h l y P r e c i p i t a t i o n T o t a l s Th i s a p p l i c a t i o n c r e a t e s a n n u a l s u m m a r ie s o f p r e c i p i t a t i o n d a t a g a t h e r e d b y vo l u n t e e r - b a s e d o b s e r v a t i o n n e tw o r k s t h r o u g h o u t M i n n e s o t a . T h e d a t a p r e s e n t e d a r e m o n t h l y to t a l s a n d t h e d a t a a r e g r o u p e d b y c o u n t y . O b s e r v e r l o c a t i o n s a r e d e s c r i b e d u s i n g t o w n s h i p , r a n g e , a n d s e c t i o n n u m b e r s . Ch o o s e a c o u n t y a n d y e a r , t h e n c l i c k o n "A n n u a l r e p o r t " . S CO T T  20 1 3  An n u a l r e p o r t 20 1 3 S C O T T M o n t h l y P r e c i p i t a t i o n , T o t a l s c c t t t r r s s o o o o o o o o n n n n J A N F E B M A R A P R M A Y J U N J U L A U G S E P O C T N O V D E C A G R H Y D A N N G R O 7 0 1 1 3 N 2 1 W 2 6 S W C D . 8 1 1 . 2 5 1 . 7 7 4 . 9 6 7 . 4 4 4 . 4 0 6 . 6 4 1 . 1 2 1 . 6 7 2 . 5 3 . 7 5 1 . 0 7 3 3 . 1 1 3 3 . 8 9 3 4 . 4 1 2 1 . 2 7 7 0 1 1 3 N 2 2 W 3 1 S W C D . 7 4 1 . 4 1 1 . 7 9 5 . 7 7 6 . 5 8 4 . 9 1 5 . 1 7 1 . 1 5 1 . 4 1 2 . 5 0 . 5 6 1 . 2 6 3 1 . 1 9 3 2 . 0 1 3 3 . 2 5 1 9 . 2 2 7 0 1 1 3 N 2 4 W 5 S W C D . 4 4 2 . 1 8 1 . 2 3 5 . 6 8 4 . 5 4 5 . 3 1 3 . 0 6 . 9 7 1 . 3 7 . 5 1 . 8 1 1 . 7 4 2 7 . 8 4 1 5 . 2 5 7 0 1 1 3 N 2 4 W 3 6 S W C D . 6 3 1 . 9 1 1 . 3 6 5 . 1 9 4 . 4 2 5 . 1 3 2 . 9 8 1 . 2 6 1 . 4 8 2 . 5 1 . 5 5 2 7 . 0 6 2 7 . 6 9 1 5 . 2 7 7 0 1 1 3 N 2 5 W 1 3 S W C D . 9 2 1 . 5 7 2 . 2 2 5 . 8 1 4 . 6 5 5 . 6 6 2 . 9 6 . 9 2 1 . 7 2 3 . 2 4 . 5 6 1 . 2 4 2 9 . 8 6 3 0 . 9 1 3 1 . 4 7 1 5 . 9 1 7 0 1 1 3 N 2 5 W 2 9 S W C D 1 . 3 0 1 . 3 0 2 . 0 6 5 . 2 6 3 . 9 0 5 . 8 5 2 . 6 9 . 5 6 1 . 7 7 2 . 7 8 . 6 0 1 . 5 7 2 7 . 2 7 2 8 . 3 0 2 9 . 6 4 1 4 . 7 7 7 0 1 1 4 N 2 1 W 5 S W C D . 7 9 1 . 2 2 1 . 9 0 5 . 1 0 5 . 5 4 6 . 8 4 7 . 5 9 1 . 6 8 1 . 1 7 3 . 0 4 . 5 7 1 . 2 3 3 4 . 1 3 3 4 . 7 1 3 6 . 6 7 2 2 . 8 2 7 0 1 1 4 N 2 2 W 3 S W C D . 7 8 1 . 2 6 1 . 9 0 5 . 5 1 5 . 0 7 5 . 7 6 5 . 5 5 1 . 4 0 1 . 3 7 2 . 0 2 . 5 9 3 1 . 1 9 3 2 . 0 4 1 9 . 1 5 7 0 1 1 4 N 2 2 W 4 B Y R G . 3 7 1 . 9 4 1 . 9 1 5 . 6 5 6 . 3 9 6 . 3 6 5 . 7 5 1 . 3 3 1 . 4 8 2 . 8 4 . 7 7 1 . 3 3 3 3 . 9 8 3 4 . 7 4 3 6 . 1 2 2 1 . 3 1 7 0 1 1 4 N 2 2 W 1 6 W S D . 8 8 1 . 1 4 1 . 6 6 5 . 9 3 6 . 3 7 9 . 1 3 1 . 4 8 1 . 6 5 2 . 6 7 . 6 3 2 4 . 5 6 7 0 1 1 4 N 2 2 W 2 8 W S D . 7 3 1 . 0 3 1 . 6 5 4 . 9 4 6 . 3 3 6 . 6 5 6 . 5 7 1 . 3 3 1 . 8 0 2 . 7 3 . 4 8 2 2 . 6 8 7 0 1 1 4 N 2 2 W 3 2 S W C D . 8 1 . 9 7 1 . 6 4 4 . 6 2 6 . 3 9 6 . 2 6 5 . 6 1 1 . 2 2 1 . 5 1 2 . 4 3 . 6 6 . 8 6 3 1 . 2 9 3 2 . 2 2 3 2 . 9 8 2 0 . 9 9 7 0 1 1 4 N 2 3 W 8 J O R D A N M O S Q 4 . 6 0 4 . 5 4 1 . 5 2 7 0 1 1 4 N 2 3 W 3 0 J O R D A N N W S . 8 6 1 . 4 4 1 . 6 7 6 . 0 5 5 . 3 2 6 . 1 1 2 . 7 6 1 . 2 2 1 . 4 8 2 . 8 5 . 5 3 1 . 5 1 2 9 . 7 7 3 0 . 6 7 3 1 . 8 0 1 6 . 8 9 7 0 1 1 4 N 2 4 W 3 5 S W C D . 8 0 1 . 4 6 . 6 0 5 . 1 8 5 . 0 4 6 . 3 1 . 9 1 1 . 3 1 1 . 6 5 3 . 0 7 . 7 0 . 9 7 2 8 . 0 0 1 5 . 2 2 7 0 1 1 5 N 2 1 W 2 7 P R I O R L A M O S Q 4 . 3 2 6 . 1 6 6 . 0 5 6 . 1 2 1 . 6 0 1 . 5 6 2 . 7 4 2 1 . 4 9 co u n t y a v e r a g e s . 7 8 1 . 4 3 1 . 6 7 5 . 2 4 5 . 5 8 5 . 7 8 4 . 9 0 1 . 2 4 1 . 5 4 2 . 5 6 . 6 3 1 . 2 8 3 0 . 8 9 3 1 . 7 2 3 2 . 2 2 1 9 . 1 2 # o f o b s 1 4 1 4 1 4 1 5 1 5 1 6 1 5 1 5 1 6 1 5 1 4 1 0 1 0 1 0 1 0 1 5 ◾ Da t a a s r e c e i v e d a n d d i g i t i z e d o n o r b e f o r e 9 / 1 4 / 2 0 1 6 . Al l v a l u e s a r e i n i n c h e s . ◾ 'c c t t t r r s s ' i s c o u n t y - t o w n s h i p - r a n g e - s e ct i o n n u m b e r , ' o o o o o o o o ' i s c o m m u n i t y n a m e (w h e r e a p p l i c a b l e ) , ' n n n n ' i s n e t w o r k t y p e . ◾ 'A G R ' , ' H Y D ' , a n d ' A N N ' a r e 1 2 m o n t h p r e c i p it a t i o n t o t a l s s t a r t i n g i n S e p 2 0 1 2 , O c t 20 1 2 , a n d J a n 2 0 1 3 , r e s p e c t i v e l y . ' G R O ' i s gr o w i n g s e a s o n ( M a y 2 0 1 3 t h r u S e p 2 0 1 3 ) pr e c i p i t a t i o n t o t a l . ◾ '* ' d e n o t e s a p a r t i a l m o n t h l y r e c o r d , ' e ' d e n o t e s t h at v a l u e i s w h o l l y o r p a r t i a l l y e s t i m a t e d . ◾ Pr e p a r e d b y : S t a t e C l i m a t o l o g y O ff i c e - D N R W a t e r s , p h o n e : 6 5 1 - 2 9 6 - 42 1 4 , w e b : h t t p : / / c l i m a t e . u m n . e d u Fo r s o m e p u r p o s e s , da i l y p r e c i p i t a t i o n d a t a a r e r e q u i re d . T h e p r e c i p i t a t i o n d a t a a r c h i v e a l l o w s a u s e r t o in t e r a c t i v e l y r e t r i e v e d a i l y p r e c i p i t a t i o n d a t a f r om the site nearest to a ta r g e t . Ob t a i n i n g D a t a f o r L e g a l P u r p o s e s Page 1 o f 2 An n u a l R e p o r t s o f M o n t h l y P r e c i p i t a t i o n T o t a l s 9 /14 /201 6 ht t p : / / c l i m a t e . u m n . e d u / h i d e na n n u a l / H I D E N a n n u a l . a s p Mi n n e s o t a C l i m a t o l o g y W o r k i n g G r o u p St a t e C l i m a t o l o g y O f f i c e - D N R D i v i s i o n o f E c o l o g i c a l a n d W a t e r R e s o u r c e s University of Minnesota ho m e | c u r r e n t c o n d i t i o n s | j o u r n a l | p a s t d a t a | s u m m a r i e s | a g r i c u l t u r e | o t h e r s i t e s | contact us | search | An n u a l R e p o r t s o f M o n t h l y P r e c i p i t a t i o n T o t a l s Th i s a p p l i c a t i o n c r e a t e s a n n u a l s u m m a r ie s o f p r e c i p i t a t i o n d a t a g a t h e r e d b y vo l u n t e e r - b a s e d o b s e r v a t i o n n e tw o r k s t h r o u g h o u t M i n n e s o t a . T h e d a t a p r e s e n t e d a r e m o n t h l y to t a l s a n d t h e d a t a a r e g r o u p e d b y c o u n t y . O b s e r v e r l o c a t i o n s a r e d e s c r i b e d u s i n g t o w n s h i p , r a n g e , a n d s e c t i o n n u m b e r s . Ch o o s e a c o u n t y a n d y e a r , t h e n c l i c k o n "A n n u a l r e p o r t " . S CO T T  20 1 4  An n u a l r e p o r t 20 1 4 S C O T T M o n t h l y P r e c i p i t a t i o n , T o t a l s c c t t t r r s s o o o o o o o o n n n n J A N F E B M A R A P R M A Y J U N J U L A U G S E P O C T N O V D E C A G R H Y D A N N G R O 7 0 1 1 3 N 2 1 W 1 7 S W C D 4 . 3 0 9 . 6 9 3 . 2 3 5 . 5 9 1 . 2 9 1 . 8 7 . 7 1 2 4 . 1 0 7 0 1 1 3 N 2 1 W 2 6 S W C D 2 . 2 4 1 . 3 5 6 . 3 1 7 0 1 1 3 N 2 2 W 3 1 S W C D . 7 8 1 . 3 9 1 . 2 7 6 . 3 0 3 . 8 5 1 3 . 1 3 2 . 5 8 3 . 4 3 1 . 9 1 1 . 8 3 . 7 0 . 9 8 3 8 . 4 6 3 8 . 9 6 3 8 . 1 5 2 4 . 9 0 7 0 1 1 3 N 2 4 W 5 S W C D 1 . 3 5 6 . 7 6 8 . 4 2 1 2 . 4 7 3 . 4 9 2 . 0 4 2 . 4 2 1 . 4 2 2 8 . 8 4 7 0 1 1 3 N 2 5 W 1 3 S W C D . 7 1 . 7 7 1 . 1 7 7 . 2 5 7 . 8 6 1 3 . 2 2 3 . 2 9 3 . 5 6 1 . 1 0 1 . 5 2 . 7 1 . 9 7 4 4 . 5 9 4 3 . 9 7 4 2 . 1 3 2 9 . 0 3 7 0 1 1 3 N 2 5 W 2 9 S W C D 1 . 5 5 1 . 7 0 1 . 4 8 5 . 2 4 5 . 5 9 1 1 . 5 7 3 . 6 5 3 . 4 4 1 . 4 7 1 . 2 7 . 6 5 . 7 1 4 0 . 9 4 4 0 . 6 4 3 8 . 3 2 2 5 . 7 2 7 0 1 1 4 N 2 1 W 5 S W C D . 8 3 1 . 1 0 . 8 8 6 . 3 3 3 . 8 1 1 2 . 5 5 4 . 0 3 3 . 1 3 1 . 5 0 1 . 0 7 . 7 1 1 . 0 8 3 8 . 6 7 3 9 . 0 0 3 7 . 0 2 2 5 . 0 2 7 0 1 1 4 N 2 2 W 3 S W C D 1 . 0 4 1 . 4 0 . 9 6 6 . 1 2 4 . 1 6 1 1 . 7 0 3 . 9 3 3 . 5 1 . 9 3 1 . 8 0 . 6 6 . 9 9 3 7 . 2 0 2 4 . 2 3 7 0 1 1 4 N 2 2 W 4 B Y R G . 9 7 1 . 2 2 . 9 3 7 . 8 4 3 . 4 3 1 3 . 9 9 3 . 3 2 2 . 5 6 1 . 6 1 1 . 6 1 . 6 7 . 8 9 4 0 . 6 8 4 0 . 8 1 3 9 . 0 4 2 4 . 9 1 7 0 1 1 4 N 2 2 W 1 6 W S D . 7 7 1 . 0 8 . 6 1 6 . 9 6 4 . 2 2 1 3 . 7 9 7 0 1 1 4 N 2 2 W 2 8 W S D . 8 4 . 4 5 7 . 2 6 5 . 4 9 1 3 . 5 7 7 0 1 1 4 N 2 2 W 3 2 S W C D . 5 3 1 . 4 0 . 7 1 5 . 4 1 4 . 5 2 1 3 . 5 7 3 . 0 8 3 . 7 3 2 . 1 6 1 . 6 9 . 6 2 . 9 1 3 8 . 4 1 3 9 . 0 6 3 8 . 3 3 2 7 . 0 6 7 0 1 1 4 N 2 3 W 8 J O R D A N M O S Q 6 . 6 5 1 4 . 4 4 7 0 1 1 4 N 2 3 W 3 0 J O R D A N N W S 1 . 0 9 1 . 2 2 1 . 2 2 7 . 5 1 2 . 9 6 1 2 . 3 0 2 . 0 4 2 . 5 3 2 . 4 3 1 . 5 5 . 7 2 . 9 6 3 7 . 2 4 3 8 . 1 9 3 6 . 5 3 2 2 . 2 6 7 0 1 1 4 N 2 4 W 3 5 S W C D . 5 7 1 1 . 9 3 1 . 6 2 2 . 2 7 . 7 2 . 9 1 7 0 1 1 5 N 2 1 W 2 7 P R I O R L A M O S Q 6 . 7 1 3 . 6 9 1 2 . 7 8 7 0 1 1 5 N 2 2 W 6 S W C D 1 2 . 9 2 2 . 3 8 3 . 3 6 . 8 8 co u n t y a v e r a g e s . 9 3 1 . 3 1 1 . 0 0 6 . 6 2 4 . 7 9 1 2 . 7 3 3 . 1 8 3 . 3 5 1 . 6 1 1 . 6 3 . 6 9 . 9 3 3 9 . 8 6 4 0 . 0 9 3 8 . 3 4 2 5 . 6 1 # o f o b s 1 1 1 1 1 1 1 4 1 3 1 6 1 1 1 1 1 2 1 1 1 0 9 7 7 8 1 0 ◾ Da t a a s r e c e i v e d a n d d i g i t i z e d o n o r b e f o r e 9 / 1 4 / 2 0 1 6 . Al l v a l u e s a r e i n i n c h e s . ◾ 'c c t t t r r s s ' i s c o u n t y - t o w n s h i p - r a n g e - s e ct i o n n u m b e r , ' o o o o o o o o ' i s c o m m u n i t y n a m e (w h e r e a p p l i c a b l e ) , ' n n n n ' i s n e t w o r k t y p e . ◾ 'A G R ' , ' H Y D ' , a n d ' A N N ' a r e 1 2 m o n t h p r e c i p it a t i o n t o t a l s s t a r t i n g i n S e p 2 0 1 3 , O c t 20 1 3 , a n d J a n 2 0 1 4 , r e s p e c t i v e l y . ' G R O ' i s gr o w i n g s e a s o n ( M a y 2 0 1 4 t h r u S e p 2 0 1 4 ) pr e c i p i t a t i o n t o t a l . ◾ '* ' d e n o t e s a p a r t i a l m o n t h l y r e c o r d , ' e ' d e n o t e s t h at v a l u e i s w h o l l y o r p a r t i a l l y e s t i m a t e d . ◾ Pr e p a r e d b y : S t a t e C l i m a t o l o g y O ff i c e - D N R W a t e r s , p h o n e : 6 5 1 - 2 9 6 - 42 1 4 , w e b : h t t p : / / c l i m a t e . u m n . e d u Fo r s o m e p u r p o s e s , da i l y p r e c i p i t a t i o n d a t a a r e r e q u i re d . T h e p r e c i p i t a t i o n d a t a a r c h i v e a l l o w s a u s e r t o in t e r a c t i v e l y r e t r i e v e d a i l y p r e c i p i t a t i o n d a t a f r om the site nearest to a ta r g e t . Page 1 o f 2 An n u a l R e p o r t s o f M o n t h l y P r e c i p i t a t i o n T o t a l s 9 /14 /201 6 ht t p : / / c l i m a t e . u m n . e d u / h i d e na n n u a l / H I D E N a n n u a l . a s p Mi n n e s o t a C l i m a t o l o g y W o r k i n g G r o u p St a t e C l i m a t o l o g y O f f i c e - D N R D i v i s i o n o f E c o l o g i c a l a n d W a t e r R e s o u r c e s University of Minnesota ho m e | c u r r e n t c o n d i t i o n s | j o u r n a l | p a s t d a t a | s u m m a r i e s | a g r i c u l t u r e | o t h e r s i t e s | contact us | search | An n u a l R e p o r t s o f M o n t h l y P r e c i p i t a t i o n T o t a l s Th i s a p p l i c a t i o n c r e a t e s a n n u a l s u m m a r ie s o f p r e c i p i t a t i o n d a t a g a t h e r e d b y vo l u n t e e r - b a s e d o b s e r v a t i o n n e tw o r k s t h r o u g h o u t M i n n e s o t a . T h e d a t a p r e s e n t e d a r e m o n t h l y to t a l s a n d t h e d a t a a r e g r o u p e d b y c o u n t y . O b s e r v e r l o c a t i o n s a r e d e s c r i b e d u s i n g t o w n s h i p , r a n g e , a n d s e c t i o n n u m b e r s . Ch o o s e a c o u n t y a n d y e a r , t h e n c l i c k o n "A n n u a l r e p o r t " . S CO T T  20 1 5  An n u a l r e p o r t 20 1 5 S C O T T M o n t h l y P r e c i p i t a t i o n , T o t a l s c c t t t r r s s o o o o o o o o n n n n J A N F E B M A R A P R M A Y J U N J U L A U G S E P O C T N O V D E C A G R H Y D A N N G R O 7 0 1 1 3 N 2 1 W 1 7 S W C D . 4 1 . 3 8 . 9 9 1 . 4 2 3 . 4 5 6 . 7 7 9 . 6 4 3 . 3 4 3 . 7 0 2 6 . 9 0 7 0 1 1 3 N 2 2 W 1 2 S W C D 2 . 3 0 3 . 4 0 7 0 1 1 3 N 2 2 W 3 1 S W C D . 3 1 1 . 2 3 1 . 7 2 4 . 1 7 3 . 8 5 7 . 4 4 4 . 0 2 4 . 1 4 2 . 2 5 4 . 0 3 3 . 0 3 2 3 . 6 2 7 0 1 1 3 N 2 5 W 1 S W C D . 4 0 . 7 0 1 . 4 5 1 . 9 0 5 . 1 6 4 . 2 6 5 . 4 4 3 . 0 3 2 . 5 4 2 . 9 0 3 . 7 3 1 . 6 0 3 3 . 1 1 2 0 . 4 3 7 0 1 1 3 N 2 5 W 1 3 S W C D . 4 5 . 4 9 1 . 4 0 2 . 2 0 5 . 5 8 4 . 4 0 5 . 8 5 2 . 5 5 3 . 1 4 2 . 6 7 4 . 2 6 2 . 0 8 2 7 . 2 2 2 9 . 2 6 3 5 . 0 7 2 1 . 5 2 7 0 1 1 4 N 2 1 W 5 S W C D . 2 4 . 3 7 . 9 3 1 . 9 2 4 . 6 8 4 . 9 1 7 . 3 8 3 . 8 6 3 . 1 8 2 . 4 9 3 . 8 8 2 . 9 5 2 8 . 6 5 3 0 . 3 3 3 6 . 7 9 2 4 . 0 1 7 0 1 1 4 N 2 2 W 3 S W C D . 3 6 . 3 5 1 . 1 2 1 . 6 0 3 . 6 9 5 . 2 7 8 . 2 7 3 . 5 3 3 . 1 7 2 . 2 2 3 . 9 0 2 . 4 1 2 8 . 5 7 3 0 . 8 1 3 5 . 8 9 2 3 . 9 3 7 0 1 1 4 N 2 2 W 4 B Y R G . 2 8 . 3 9 1 . 1 0 2 . 1 2 4 . 8 5 4 . 5 3 7 . 4 7 4 . 9 0 2 . 7 8 2 . 3 8 3 . 8 7 2 . 9 5 3 0 . 4 2 3 1 . 5 9 3 7 . 6 2 2 4 . 5 3 7 0 1 1 4 N 2 2 W 1 6 W S D . 1 3 1 . 0 2 4 . 3 1 6 . 3 4 7 . 4 6 4 . 3 5 3 . 7 1 2 . 7 3 3 . 6 2 2 . 5 5 2 6 . 1 7 7 0 1 1 4 N 2 2 W 2 8 W S D . 1 5 . 2 3 1 . 0 5 1 . 2 5 4 . 6 4 6 . 0 8 8 . 1 6 3 . 8 1 4 . 0 4 2 . 4 8 3 . 6 7 2 . 8 9 3 8 . 4 5 2 6 . 7 3 7 0 1 1 4 N 2 2 W 3 2 S W C D . 2 8 . 2 5 . 9 2 1 . 8 2 4 . 7 5 5 . 2 7 7 . 9 6 3 . 5 9 4 . 0 6 2 . 4 6 3 . 5 6 2 . 4 9 3 0 . 2 2 3 2 . 1 2 3 7 . 4 1 2 5 . 6 3 7 0 1 1 4 N 2 3 W 8 J O R D A N M O S Q 2 . 1 9 3 . 9 5 4 . 3 3 5 . 3 1 2 . 1 6 7 0 1 1 4 N 2 3 W 3 0 J O R D A N N W S . 3 8 . 4 7 1 . 1 1 1 . 8 8 4 . 4 2 4 . 5 7 6 . 2 8 2 . 1 9 2 . 4 9 2 . 4 1 3 . 5 0 2 . 7 0 2 6 . 9 6 2 7 . 0 2 3 2 . 4 0 1 9 . 9 5 7 0 1 1 4 N 2 4 W 2 3 S W C D . 1 6 . 2 2 1 . 1 7 2 . 2 5 5 . 1 6 4 . 8 4 5 . 7 3 2 . 2 3 2 . 7 1 2 . 9 3 4 . 0 1 2 . 0 2 3 3 . 4 3 2 0 . 6 7 7 0 1 1 4 N 2 4 W 3 5 S W C D . 2 8 . 2 2 1 . 0 3 2 . 1 6 4 . 4 3 4 . 2 6 6 . 0 9 2 . 0 9 2 . 3 3 2 . 7 8 4 . 0 7 2 . 2 1 2 6 . 0 8 2 6 . 7 9 3 1 . 9 5 1 9 . 2 0 7 0 1 1 5 N 2 1 W 1 6 S W C D 2 . 2 5 3 . 3 0 3 . 4 1 7 0 1 1 5 N 2 1 W 1 6 S W C D 3 . 7 6 2 . 0 4 7 0 1 1 5 N 2 1 W 2 7 P R I O R L A M O S Q 2 . 5 0 4 . 3 9 4 . 5 9 6 . 8 0 7 0 1 1 5 N 2 3 W 1 1 S W C D 4 . 0 6 1 . 8 2 co u n t y a v e r a g e s . 2 9 . 3 7 1 . 1 2 1 . 9 2 4 . 5 1 4 . 9 5 7 . 0 2 3 . 2 6 3 . 2 3 2 . 5 2 3 . 8 1 2 . 5 3 2 8 . 3 0 2 9 . 7 0 3 5 . 2 1 2 3 . 3 3 # o f o b s 1 3 1 1 1 3 1 4 1 5 1 5 1 5 1 4 1 3 1 4 1 5 1 6 7 7 1 0 1 3 ◾ Da t a a s r e c e i v e d a n d d i g i t i z e d o n o r b e f o r e 9 / 1 4 / 2 0 1 6 . Al l v a l u e s a r e i n i n c h e s . ◾ 'c c t t t r r s s ' i s c o u n t y - t o w n s h i p - r a n g e - s e ct i o n n u m b e r , ' o o o o o o o o ' i s c o m m u n i t y n a m e (w h e r e a p p l i c a b l e ) , ' n n n n ' i s n e t w o r k t y p e . ◾ 'A G R ' , ' H Y D ' , a n d ' A N N ' a r e 1 2 m o n t h p r e c i p it a t i o n t o t a l s s t a r t i n g i n S e p 2 0 1 4 , O c t 20 1 4 , a n d J a n 2 0 1 5 , r e s p e c t i v e l y . ' G R O ' i s gr o w i n g s e a s o n ( M a y 2 0 1 5 t h r u S e p 2 0 1 5 ) pr e c i p i t a t i o n t o t a l . ◾ '* ' d e n o t e s a p a r t i a l m o n t h l y r e c o r d , ' e ' d e n o t e s t h at v a l u e i s w h o l l y o r p a r t i a l l y e s t i m a t e d . ◾ Pr e p a r e d b y : S t a t e C l i m a t o l o g y O ff i c e - D N R W a t e r s , p h o n e : 6 5 1 - 2 9 6 - 42 1 4 , w e b : h t t p : / / c l i m a t e . u m n . e d u Page 1 o f 2 An n u a l R e p o r t s o f M o n t h l y P r e c i p i t a t i o n T o t a l s 9 /14 /201 6 ht t p : / / c l i m a t e . u m n . e d u / h i d e na n n u a l / H I D E N a n n u a l . a s p Mi n n e s o t a C l i m a t o l o g y W o r k i n g G r o u p St a t e C l i m a t o l o g y O f f i c e - D N R D i v i s i o n o f E c o l o g i c a l a n d W a t e r R e s o u r c e s University of Minnesota ho m e | c u r r e n t c o n d i t i o n s | j o u r n a l | p a s t d a t a | s u m m a r i e s | a g r i c u l t u r e | other sites | contact us | search | An n u a l R e p o r t s o f M o n t hl y P r e c i p i t a t i o n T o t a l s Th i s a p p l i c a t i o n c r e a t e s a n n u a l s u m m a r i e s o f p r e c i p i t a t i o n d a t a g a t h e r e d b y vo l u n t e e r - b a s e d o b s e r v a t i o n n e t w o r k s t h r o u g h o u t M i n n e s o t a . T h e d a t a p r e s e n t e d a r e m o n t h l y t o t a l s an d t h e d a t a a r e g r o u p e d b y c o u n t y . O b s e r v e r l o c a t i o n s a r e d e s c r i b e d u s i n g t o w n s h i p , r a n g e , a n d s e c t i o n n u m b e r s . Ch o o s e a c o u n t y a n d y e a r , t h e n c l i c k o n "A n n u a l r e p o r t " . SC O T T  20 1 6  An n u a l r e p o r t 20 1 6 S C O T T M o n t h l y P r e c i p i t a t i o n , T o t a l s c c t t t r r s s o o o o o o o o n n n n J A N F E B M A R A P R M A Y J U N J U L A U G S E P O C T N O V D E C A G R H Y D A N N G R O 7 0 1 1 3 N 2 2 W 1 2 S W C D . 4 1 . 6 9 2 . 0 9 1 . 7 3 2 . 5 5 4 . 1 8 4 . 6 4 6 . 6 7 5 . 8 3 3 . 0 7 2 . 6 5 2 . 3 8 3 6 . 8 9 2 3 . 8 7 7 0 1 1 3 N 2 2 W 3 1 S W C D . 3 1 . 6 1 1 . 8 8 1 . 7 6 2 . 9 4 4 . 5 2 5 . 1 8 6 . 7 7 5 . 9 8 3 . 0 3 2 . 7 2 2 . 3 6 3 7 . 4 2 3 9 . 2 6 3 8 . 0 6 2 5 . 3 9 7 0 1 1 3 N 2 3 W 3 4 S W C D 2 . 4 9 6 . 4 3 5 . 8 2 2 . 8 8 2 . 3 2 2 . 0 5 7 0 1 1 3 N 2 4 W 3 6 S W C D 5 . 5 0 7 0 1 1 3 N 2 5 W 1 S W C D . 2 0 . 7 0 1 . 2 1 2 . 5 6 3 . 9 1 3 . 3 3 4 . 6 7 6 . 3 8 5 . 9 5 2 . 9 6 1 . 5 7 2 . 2 2 3 3 . 7 3 3 7 . 1 4 3 5 . 6 6 2 4 . 2 4 7 0 1 1 3 N 2 5 W 1 3 S W C D . 2 6 . 5 1 1 . 5 5 2 . 5 3 3 . 2 9 3 . 1 9 6 . 3 6 6 . 1 9 5 . 6 9 3 . 2 9 2 . 0 3 1 . 9 4 3 6 . 0 3 3 8 . 5 8 3 6 . 8 3 2 4 . 7 2 7 0 1 1 4 N 2 1 W 5 S W C D . 2 7 . 6 5 1 . 6 1 1 . 8 5 2 . 8 7 3 . 5 8 5 . 1 5 9 . 7 4 5 . 3 4 3 . 5 1 2 . 6 1 2 . 4 0 3 8 . 2 2 4 0 . 3 8 3 9 . 5 8 2 6 . 6 8 7 0 1 1 4 N 2 2 W 4 B Y R G . 3 2 . 8 6 2 . 5 2 2 . 4 3 2 . 6 9 3 . 1 8 4 . 4 2 1 0 . 4 1 5 . 1 0 3 . 5 0 3 . 1 5 2 . 4 8 3 8 . 8 1 4 1 . 1 3 4 1 . 0 6 2 5 . 8 0 7 0 1 1 4 N 2 2 W 7 S W C D . 3 7 . 7 9 1 . 9 1 1 . 8 0 2 . 3 0 3 . 1 0 4 . 2 0 9 . 9 0 5 . 8 0 3 . 4 0 2 . 0 0 1 . 5 1 3 7 . 0 8 2 5 . 3 0 7 0 1 1 4 N 2 2 W 1 6 W S D . 2 7 . 5 4 2 . 2 6 1 . 6 6 3 . 5 1 2 . 8 0 4 . 9 2 1 0 . 4 1 5 . 0 8 3 . 2 4 3 . 0 9 2 . 1 8 3 8 . 9 8 4 0 . 3 5 3 9 . 9 6 2 6 . 7 2 7 0 1 1 4 N 2 2 W 2 8 W S D . 7 3 2 . 2 0 1 . 9 3 3 . 4 1 3 . 1 7 4 . 4 7 7 . 8 8 5 . 4 2 3 . 2 0 3 . 0 6 2 . 0 0 2 4 . 3 5 7 0 1 1 4 N 2 2 W 3 2 S W C D . 3 1 . 9 1 1 . 8 8 2 . 1 0 3 . 5 4 2 . 6 7 4 . 6 8 8 . 4 0 5 . 4 8 3 . 1 6 2 . 8 1 2 . 0 1 3 7 . 0 6 3 8 . 4 8 3 7 . 9 5 2 4 . 7 7 7 0 1 1 4 N 2 3 W 8 J O R D A N M O S Q 7 . 8 9 7 0 1 1 4 N 2 3 W 3 0 J O R D A N N W S . 3 0 1 . 0 6 1 . 7 0 2 . 1 9 2 . 4 7 2 . 1 0 4 . 7 8 8 . 6 8 4 . 9 0 3 . 1 0 1 . 8 2 2 . 0 5 3 4 . 3 8 3 6 . 7 9 3 5 . 1 5 2 2 . 9 3 7 0 1 1 4 N 2 4 W 2 3 S W C D . 2 3 . 2 8 1 . 7 3 2 . 4 1 2 . 2 5 2 . 7 9 4 . 2 8 7 . 5 8 5 . 0 7 3 . 5 7 1 . 7 7 2 . 0 3 3 3 . 2 2 3 5 . 5 8 3 3 . 9 9 2 1 . 9 7 7 0 1 1 4 N 2 4 W 3 5 S W C D . 2 5 . 2 6 1 . 3 5 2 . 0 3 2 . 7 3 2 . 5 4 4 . 5 1 7 . 5 4 4 . 6 9 2 . 9 4 1 . 7 3 2 . 1 0 3 2 . 6 0 3 4 . 9 6 3 2 . 6 7 2 2 . 0 1 7 0 1 1 5 N 2 1 W 1 6 S W C D . 3 6 . 9 5 1 . 7 5 2 . 3 8 * * 6 . 1 1 9 . 3 3 3 . 8 9 4 . 6 9 * 2 . 0 0 7 0 1 1 5 N 2 1 W 1 6 S W C D . 0 3 7 0 1 1 5 N 2 1 W 2 7 P R I O R L A M O S Q 2 . 1 7 9 . 9 0 7 0 1 1 5 N 2 3 W 1 1 S W C D . 1 6 . 3 1 1 . 6 5 2 . 0 0 1 . 7 5 3 . 1 9 5 . 0 1 8 . 3 4 6 . 9 2 3 . 6 1 1 . 8 5 1 . 6 8 3 6 . 4 7 2 5 . 2 1 co u n t y a v e r a g e s . 2 7 . 6 6 1 . 8 2 2 . 1 0 2 . 8 7 3 . 1 7 4 . 7 4 8 . 2 5 5 . 4 4 3 . 3 2 2 . 3 5 2 . 0 9 3 6 . 0 5 3 8 . 2 7 3 7 . 0 3 2 4 . 5 7 # o f o b s 1 5 1 5 1 5 1 6 1 4 1 4 1 6 1 8 1 7 1 6 1 5 1 6 1 0 1 0 1 3 1 4 ◾ Da t a a s r e c e i v e d a n d d i g i t i z e d o n o r b e f o r e 6 / 5 / 2 0 1 7 . Al l v a l u e s a r e i n i n c h e s . ◾ 'c c t t t r r s s ' i s c o u n t y - t o w n s h i p - r a n g e - s e c t i o n n u m b e r , ' o o o o o o o o ' i s c o m m u n i t y n a m e ( w h e r e a p p l i c a b l e ) , ' n n n n ' i s n e t w o r k t y p e . ◾ 'A G R ' , ' H Y D ' , a n d ' A N N ' a r e 1 2 m o n t h p r e c i p i t a t i o n t o t a l s s t a r t i n g i n S e p 2 0 1 5 , O c t 2 0 1 5 , a n d J a n 2 0 1 6 , r e s p e c t i v e l y . ' G R O ' i s gr o w i n g s e a s o n ( M a y 2 0 1 6 t h r u S e p 2 0 1 6 ) pr e c i p i t a t i o n t o t a l . ◾ '* ' d e n o t e s a p a r t i a l m o n t h l y r e c o r d , ' e ' d e n o t e s t h a t v a l u e i s w h o l l y o r p a r t i a l l y e s t i m a t e d . ◾ Pr e p a r e d b y : S t a t e C l i m a t o l o g y O f f i c e - D N R W a t e r s , p h o n e : 6 5 1 - 2 9 6 - 4 2 1 4 , w e b : h t t p : / / c l i m a t e . u m n . e d u Page 1 o f 2 6 /5 /201 7 Fo r s o m e p u r p o s e s , da i l y p r e c i p i t a t i o n d a t a a r e r e q u i r e d . T h e p r e c i p i t a t i o n d a t a a r c h i v e a l l o w s a u s e r t o in t e r a c t i v e l y r e t r i e v e d a i l y p r e c i p i t a t i o n d a t a f r o m t h e s i t e n e a r e s t t o a ta r g e t . Ob t a i n i n g D a t a f o r L e g a l P u r p o s e s Last modified: April 10, 2008Page 2 o f 2 6 /5 /201 7 Attachment C-2 Other Maps !H !H !H !H !H !H !H 47 9 5 8 3 6 Ba r r F o o t e r : A r c G I S 1 0 . 4 . 1 , 2 0 1 7 - 0 7 - 2 5 1 8 : 1 7 F i l e : I : \ P r o j e c t s \ 2 3 \ 7 0 \ 1 0 5 6 \ M a p s \ R e p o r t s \ W H P P I I _ 2 0 1 7 \ F i g C - 0 2 - 2 D i t c h S y s t e m . m x d U s e r : j j l 2 DITCH SYSTEMPart 2 WHPP AmendmentCity of Prior LakeScott County, MN FIGURE C-2-2 0 875 1,750 Feet !;N !H Municipal Well Ditch Inventory Municipal Boundary Prior Lake DWSMA Ditch Inventory High Moderate Low * Ditch Inventory Data (Scott County) 3 - Municipal Well Location PCSI ID(PCSI ID refers to Table C-3) !H !H !H !H !H !H !H 47 9 5 8 3 6 Markley Cate'sor Hidden Rice Keup's Buck Lower Prior Cleary Spring Little Prior Upper Prior Crystal Arctic Blind ¨©87 ¨©81 456744 456712 456721 456782 456783 456723 456721 456727 13 13 Prior Lake Savage Shakopee Ba r r F o o t e r : A r c G I S 1 0 . 4 . 1 , 2 0 1 7 - 0 7 - 2 5 1 3 : 0 5 F i l e : I : \ P r o j e c t s \ 2 3 \ 7 0 \ 1 0 5 6 \ M a p s \ R e p o r t s \ W H P P I I _ 2 0 1 7 \ F i g C - 2 - 1 T o w n s h i p Z o n i n g . m x d U s e r : J C G ZONING IN SPRING LAKE &CREDIT RIVER TOWNSHIPSPart 2 WHPP AmendmentCity of Prior LakeScott County, MN FIGURE C-2-1 0 875 1,750 Feet !;N !H Municipal Well Municipal Boundary Township Boundary Prior Lake DWSMA Zoning A-1 A-2 A-3 C-1 I-1 RR-1 RR-1C RR-2 RR-3 UBR UER UERC UTR UTR-C Image Source: FSA (2015) Spring Lake Twp Credit River Twp Attachment C-3 Sealed Wells PCSI Results - Sealed Wells in the DWSMAs City of Prior Lake WHPP Amendment PCSI ID PID No.Unique No.Status Use Well Owner Well Location City Total Sealed Depth (Feet) Date Completed/Sealed Aquifer PCS Code Location Verified 1 139-250850030 127108 Sealed Not Available Lynch, Joseph 15757 Island View Rd Nw Prior Lake 309 7/19/2004 Not Available WEL No 2 139-250850080 127113 Sealed Not Available Handt, Marvin 15923 Island View Rd Prior Lake 456 8/1/2001 Not Available WEL No 3 139-253760490 464012 Sealed Not Available Hyland, Mark 154th (& Fremont Av N) St Nw Prior Lake 220 8/14/1996 Not Available WEL No 4 139-254120150 552204 Sealed Not Available Shamrock Development 3270 154th Nw Prior Lake 207 9/9/2003 Not Available WEL No 5 Not Available H9437 Sealed Not Available Coldwell Banker 15947 Island View Prior Lake 463 11/8/1990 Not Available WEL No 6 Not Available H25062 Sealed Not Available Brady, Harry 15784 Candy Cove Tr Se Prior Lake 162 8/26/1992 Not Available WEL No 7 Not Available H43582 Sealed Not Available Christenson, Jim 3270 154th St Nw Prior Lake 203 Not Available Not Available WEL No 8 139-253150010 H37660 Sealed Not Available Adelmann, Anthony 5247 Credit River Rd Prior Lake 138 6/28/1994 Not Available WEL No 9 Not Available H37686 Sealed Not Available O'halloran, Sean 320 154th St Nw Prior Lake 185 6/1/1995 Not Available WEL No 10 139-259010111 H37000 Sealed Not Available Greystone Construction Company Cottonwood La Prior Lake 15 4/22/1994 Not Available WEL No 11 Not Available H51741 Sealed Not Available Leitzau, Dick 15680 Fish Point Rd Prior Lake 133 10/31/1995 Not Available WEL No 12 139-252060020 H51966 Sealed Not Available Richardson, Harvard 15820 Arctic Ci Nw Prior Lake 180 5/31/1994 Not Available WEL No 13 Not Available H43278 Sealed Not Available Bixby Oil Company 16765 Welcome Av Prior Lake 10 3/4/1994 Not Available WEL No 14 Not Available H67022 Sealed Not Available Bousamra, William 15871 Island View Rd Nw Prior Lake 342 6/2/1995 Not Available WEL No 15 139-254170250 H80376 Sealed Not Available Bohnsack, Emma 15540 Drake Av Nw Prior Lake 17 11/8/1992 Not Available WEL No 16 Not Available H79924 Sealed Not Available Baudette, Bertha 5086 Credit River Rd Se Prior Lake 80 1/15/1993 Not Available WEL No 17 Not Available H95039 Sealed Not Available Hadac, Ronald 6076 Birch Rd Prior Lake 117 3/31/1989 Not Available WEL No 18 Not Available H130294 Sealed Not Available Russco, Verda 5348 160th St Se Prior Lake 99 10/29/1999 Not Available WEL No 19 139-259330200 H117294 Sealed Not Available Shakopee Mdwakahton Sioux Community 2790 154th St Prior Lake 340 10/3/1997 Not Available WEL No 20 139-259330200 H117295 Sealed Not Available Shakopee Mdewakahton Sioux Community 2790 154th St Prior Lake 216 10/2/1997 Not Available WEL No 21 Not Available H134031 Sealed Not Available Haugh, Bob/betty 5364 160th St E Prior Lake 91 3/18/1999 Not Available WEL No 22 Not Available H152848 Sealed Not Available Mn Pca 6076 Birch Rd Prior Lake 15 7/26/2001 Not Available WEL No 23 Not Available H154080 Sealed Not Available Crown Oil Company 16735 Franklin Tr Se Prior Lake 12 6/23/2000 Not Available WEL No 24 Not Available H154081 Sealed Not Available Crown Oil Company 16670 Franklin Tr Se Prior Lake 12 6/23/2000 Not Available WEL No 25 139-253750020 H156797 Sealed Not Available Prior Lake, City Of 15248 Wilds Pk Ne Prior Lake 207 7/11/2000 Not Available WEL No 26 Not Available H165223 Sealed Not Available Wensmanns Homes Not Available Prior Lake 220 3/15/2001 Not Available WEL No 27 Not Available H175201 Sealed Not Available Bridgeland Development Credit River Bl Prior Lake 95 12/5/2001 Not Available WEL No 28 139-254170250 H188037 Sealed Not Available Chaska Building Center 15611 Drake Av N Prior Lake 172 5/20/2002 Not Available WEL No 29 139-254170250 H188038 Sealed Not Available Chaska Building Center 15556 Drake Av N Prior Lake 153 5/20/2002 Not Available WEL No 30 139-254170250 H188039 Sealed Not Available Chaska Building Center 15540 Drake Av N Prior Lake 196 5/20/2002 Not Available WEL No 31 139-259340160 H177371 Sealed Not Available Shamrock Development 3020 155th St Prior Lake 222 4/1/2001 Not Available WEL No 32 139-259340160 H177379 Sealed Not Available Shamrock Development 3020 155th St Prior Lake 275 4/1/2001 Not Available WEL No 33 Not Available H176831 Sealed Not Available Tj Tire And Towing 16675 Franklin Tr Prior Lake 16 12/1/2000 Not Available WEL No 34 Not Available H212611 Sealed Not Available Prior Lake Mini Storage 6000 Credit River Rd Prior Lake 117 12/30/2003 Not Available WEL No 35 Not Available H204240 Sealed Not Available Mesenbrink Construction 17216 Revere Wa Prior Lake 116 6/20/2003 Not Available WEL No 36 Not Available H199067 Sealed Not Available Busse, Jeanette 5032 Credit River Rd Se Prior Lake 78 3/28/2003 Not Available WEL No 37 139-40110140 H214647 Sealed Not Available Rausch, Ken 6125 Birch Rd Prior Lake 100 11/20/2003 Not Available WEL No 38 Not Available H207056 Sealed Not Available Chaska Building Center 3620 154th St Nw Prior Lake 201 9/22/2003 Not Available WEL No 39 Not Available H207057 Sealed Not Available Chaska Building Center 3600 154th St Nw Prior Lake 197 9/22/2003 Not Available WEL No 40 Not Available H225549 Sealed Not Available Kath Fuel Oil Service 16765 Welcome Av Se Prior Lake 16 8/4/2004 Not Available WEL No 41 Not Available H219583 Sealed Not Available Farmington Development 3810 154th St Nw Prior Lake 220 5/3/2004 Not Available WEL No 42 Not Available H237307 Sealed Not Available Shakopee Mdewakanton Sioux Community Dakota Tr N Prior Lake 0 7/29/2005 Not Available WEL No 43 Not Available H228819 Sealed Not Available Raaen, Verlyn 5437 160th St Se Prior Lake 110 5/7/2005 Not Available WEL No 44 139-254540460 424664 Sealed Not Available Ryan Contracting 17686 Revere Wa Prior Lake 155 2/15/2006 Not Available WEL No 45 Not Available H227012 Sealed Not Available Gastony, Conrad Industrial La Prior Lake 20 11/19/2004 Not Available WEL No 46 Not Available H233816 Sealed Not Available Northwest Asphalt 5280 160th St Se Prior Lake 131 8/25/2005 Not Available WEL No 47 Not Available 190289 Sealed Not Available Crown Coco 16735 Franklin Tr Se Prior Lake 12 3/27/2008 Not Available WEL No 48 Not Available 248983 Sealed Not Available Crown Coco 16735 Franklin Tr Se Prior Lake 14 3/26/2008 Not Available WEL No 49 Not Available 547722 Sealed Not Available Crown Coco 16735 Franklin Tr Se Prior Lake 13 3/26/2008 Not Available WEL No 50 Not Available H268515 Sealed Not Available Crown Coco 16735 Franklin Tr Se Prior Lake 16 3/26/2008 Not Available WEL No 51 Not Available H268516 Sealed Not Available Crown Coco 16735 Franklin Tr Se Prior Lake 16 3/26/2008 Not Available WEL No 52 Not Available H268517 Sealed Not Available Crown Coco 16735 Franklin Tr Se Prior Lake 24 3/26/2008 Not Available WEL No 53 Not Available H268519 Sealed Not Available Crown Coco 16735 Franklin Tr Se Prior Lake 14 3/27/2008 Not Available WEL No 54 Not Available 747736 Sealed Not Available Crown Coco Co.16735 Franklin Tr Se Prior Lake 14 3/26/2008 Not Available WEL No 55 Not Available H262049 Sealed Not Available Integra Telecom 5786 Credit River Rd Prior Lake 96 9/20/2010 Not Available WEL No 56 139-259360010 H0291685 Sealed Not Available Arneson, Nick 5344 160th St SE Prior Lake 100 2/4/2011 Not Available WEL No 57 Not Available 127109 Sealed Not Available Anderson, George V.15809 Island View Rd NW Prior Lake 276 8/28/2012 Not Available WEL No 58 139-252920010 510416 Sealed Domestic Swenson, Rick 16940 Welcome Av Prior Lake 107 12/05/1989 QBUA WEL No 59 139-259010150 768989 Sealed Dewatering well Prior Lake City 5660 Credit River Rd Se Prior Lake 40 9/11/2015 Not Available WEL No Page 1 of 1 \\barr.com\projects\Mpls\23 MN\70\23701056 WHPP Amendment\WorkFiles\Part 2 WHPP Amendment\Work Files\Tables\Sealed Wells in the DWSMAs.xlsx !> !> !> !> !> !> !> !> !> !> !>!> !> !> !> !> !> !> !>!> !> !>!> !> !> !> !> !>!>!>!>!> !> !> !> !> !> !>!> !> !> !> !> !> !> !> !>!>!>!>!>!>!>!> !> !> !> !> !> !H !H !H !H !H !H !H 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 47 9 5 8 3 6 Markley Cate'sor Hidden Rice Keup's Buck Lower Prior Cleary Cleary Spring Little Prior Upper Prior Crystal ¨©87 ¨©81 456712 456744 456782 456783 456723 456721 456721 13 13 Prior Lake Savage Ba r r F o o t e r : A r c G I S 1 0 . 4 . 1 , 2 0 1 7 - 0 7 - 2 2 1 3 : 1 0 F i l e : I : \ P r o j e c t s \ 2 3 \ 7 0 \ 1 0 5 6 \ M a p s \ R e p o r t s \ W H P P I I _ 2 0 1 7 \ S e a l e d W e l l s i n t h e D W S M A s . m x d U s e r : j j l 2 SEALED WELLSIN THE DWSMASPart 2 WHPP AmendmentCity of Prior LakeScott County, MN FIGURE C-3-1 0 875 1,750 Feet !;N !H Municipal Well !>Sealed Well Municipal Boundary Prior Lake DWSMA DWSMA Vulnerability High Moderate Low 10 - Sealed Well Location PCSI ID(PCSI ID refers to Table - SealedWells in the DWSMAs) 3 - Municipal Well Location PCSI ID(PCSI ID refers to Table C-3) Appendix D Water Quality Information Appendix E Wellhead Protection Program Evaluation Template CITY OF PRIOR LAKE, MINNESOTA Wellhead Protection Program Evaluation Evaluation Completed By (Wellhead Protection Manager): Date Evaluation Completed: Plan Evaluation Frequency (according to wellhead protection plan): 1 year 2.5 years Copies of Evaluation Presented or Sent to: Minnesota Department of Health Environmental Health Division Source Water Protection Unit P.O. Box 64975 St. Paul, MN 55164-0975 Prior Lake City Council (Date Presented) City’s Wellhead Protection File I. Changes to Water System, Delineations, or Contaminant Sources A. List the unique number and locations of new wells installed since the last plan evaluation: Unique Well Number Date Online Delineation Completed? . B. List any new facilities or changes in current facilities in the drinking water supply management area(s) that may be of concern with regard to groundwater quality (list the facility name and nature of concern): Facility Name Change Distance to Well Well Number Date Change Made C. Was any component of the contingency plan implemented by your system at any time since the last program evaluation? Yes (What was the reason? ) No List changes that are needed in the contingency plan and update the plan accordingly: 1. 2. 3. II. Wellhead Protection Plan Evaluation Approaches In letters A-D below, complete the sections that apply to the evaluation approaches that were specified in your wellhead protection plan (Chapter 6). A. Sampling the quality of groundwater throughout the drinking water supply management area. (Summarize efforts or attach report of sampling results and conclusions.) B. Documenting inventory control of potential contaminants. (Summarize efforts.) C. Documentation of the implementation of wellhead protection measures. (Summarize efforts.) D. Using monitoring data that are required by existing laws and rules in effect at the time of plan adoption. (List data used and summarize conclusions made from data.) III. New Wellhead Protection Data List any new data that relates to wellhead protection delineations or source management (i.e., groundwater study results, water quality monitoring data, well construction logs, etc.) that may be used during the next update of the wellhead protection plan: Nature of Data Source of Data IV. Plan Implementation Administrative and Financial Concerns A. Estimate the annual expense of plan implementation for each plan year including staff time and actual dollar amount spent. Year Annual Expense Year Annual Expense 1 $ 6 $ 2 $ 7 $ 3 $ 8 $ 4 $ 9 $ 5 $ 10 $ B. Estimate full-time equivalency (FTE) spent on wellhead protection implementation in terms of percentage of FTE. FTE = % C. Has the wellhead protection budget been adequate to conduct wellhead protection implementation activities during the last evaluation period? Yes No If no, where could it improve? D. Itemize difficulties incurred during your plan implementation. 1. 2. 3. 4. Appendix F Water Emergency and Conservation Plan 1 DEPARTMENT OF NATURAL RESOURCES - DIVISION OF WATERS and METROPOLITAN COUNCIL WATER EMERGENCY AND CONSERVATION PLANS These guidelines are divided into four parts. The first three parts, Water Supply System Description and Evaluation, Emergency Response Procedures and Water Conservation Planning apply statewide. Part IV, relates to comprehensive plan requirements that apply only to communities in the Seven-County Twin Cities Metropolitan Area. If you have questions regarding water emergency and conservation plans, please call (651) 259-5703 or (651) 259-5647 or e-mail your question to wateruse@dnr.state.mn.us. Metro Communities can also direct questions to the Metropolitan Council at watersupply@metc.state.mn.us or (651) 602-1066. DNR Water Appropriation Permit Number(s) 756201 Name of Water Supplier City of Prior Lake Address 17073 Adelmann Street SE Prior Lake, MN 55372 Contact Person Craig Eldred Title Street & Utilities Supervisor Phone Number 952-447-9891 E-Mail Address celdred@cityofpriorlake.com PART I. WATER SUPPLY SYSTEM DESCRIPTION AND EVALUATION The first step in any water supply analysis is to assess the current status of demand and supplies. Information in Part I, can be used in the development of Emergency Response Procedures and Conservation Plans. A. ANALYSIS OF WATER DEMAND. Fill in Table 1 for the past 10 years water demand. If your customer categories are different than the ones listed in Table 1, please note the changes below. Please note the following regarding the City’s historic use data: 1) A problem with the record system for 2002 resulted in inaccurate totals for water sold. 2) The City completed a major water meter overhaul in 1995 (residential) and again in 2003 (commercial) eliminating numerous metering inaccuracies. 2 TABLE 1 Historic Water Demand Year Total Population Total Connections Residential Water Sold (MG) C/I/I Water Sold (MG) Wholesale Deliveries (MG) Total Water Sold (MG) Total Water Pumped (MG) Percent Unmetered/ Unaccounted Average Demand (MGD) Maximum Demand (MGD) Residential gallons/ capita/day Total gallons/ capita/day 2005 21,395 7,205 607.0 47.5 - 654.5 704.8 7.1% 1.9 5.7 77.7 90.2 2004 19,662 6,985 627.8 43.3 - 671.1 722.9 7.2% 2.0 4.8 87.5 100.7 2003 18,729 6,722 684.4 53.3 - 737.6 780.6 5.5% 2.1 6.0 100.1 114.2 2002 17,310 6,311 - 597.6 1.6 3.7 94.6 2001 16,457 5,543 537.2 38.2 - 575.4 626.4 8.1% 1.7 4.5 89.4 104.3 2000 15,917 5,351 502.3 41.5 - 543.8 614.6 11.5% 1.7 4.3 86.5 105.8 1999 15,708 5,105 395.8 48.5 - 444.4 503.6 11.8% 1.4 3.3 69.0 87.8 1998 15,214 4,758 391.5 44.4 - 435.9 481.1 9.4% 1.3 3.7 70.5 86.6 1997 14,723 4,567 390.8 39.3 - 430.6 445.1 3.3% 1.2 3.9 72.2 82.8 1996 14,312 4,402 393.8 40.8 - 434.6 465.9 6.7% 1.3 4.0 75.4 89.2 MG – Million Gallons MGD – Million Gallons per Day C/I/I- Commercial, Industrial, Institutional Residential. Water used for normal household purposes, such as drinking, food preparation, bathing, washing clothes and dishes, flushing toilets, and watering lawns and gardens. Institutional. Hospitals, nursing homes, day care centers, and other facilities that use water for essential domestic requirements. This includes public facilities and public metered uses. You may want to maintain separate institutional water use records for emergency planning and allocation purposes. Commercial. Water used by motels, hotels, restaurants, office buildings, commercial facilities, both civilian and military. Industrial. Water used for thermoelectric power (electric utility generation) and other industrial uses such as steel, chemical and allied products, food processing, paper and allied products, mining, and petroleum refining. Wholesale Deliveries. Bulk water sales to other public water suppliers. Unaccounted. Unaccounted for water is the volume of water withdrawn from all sources minus the volume sold. Residential Gallons per Capita per Day = total residential sales in gallons/population served/365 days Total Gallons per Capita per Day = total water withdrawals/population served/365 days NOTE: Non-essential water uses defined by Minnesota Statutes 103G.291, include lawn sprinkling, vehicle washing, golf course and park irrigation and other non-essential uses. Some of the above categories also include non-essential uses of water. 3 Water Use Trends. Discuss factors that influence trends in water demand (i.e. growth, weather, industry, conservation). If appropriate, include a discussion of other factors that affect daily water use, such as use by non-resident commuter employees or large water consuming industry. In 2004 the City implemented a very aggressive water conservation program. Weekend enforcement procedures along with fines and water shutoffs were implemented. The City also increased the public awareness programs related to water use. These measures combined with a more stable number of building permits have resulted in a decrease in water use per capita. TABLE 2 Large Volume Users - List the top 10 largest users. Customer Gallons per year (MG) % of total annual use Deerfield Association (586500) 4.3 0.6 Holiday Station (1014100) 2.8 0.4 Harborview Association 2.6 0.4 Meadowview Association 2.2 0.3 Glynwater South Association 2.2 0.3 Private Residence Hidden Oak Cir 2.1 0.3 Wilds Golf Course 2.0 0.3 Lakefront Plaza 2.0 0.3 Holiday Station (1136000) 1.9 0.3 Deerfield Association (548600) 1.5 0.1 B. TREATMENT AND STORAGE CAPACITY. TABLE 3(A) Water Treatment Water Treatment Plant Capacity 0 Gallons per day Describe the treatment process used (ie, softening, chlorination, fluoridation, Fe/Mn removal, reverse osmosis, coagulation, sedimentation, filtration, others). Also, describe the annual amount and method of disposal of treatment residuals, if any. The City does not have a treatment plant. Chlorination and fluoridation are provided at the individual well houses. The City is in the preliminary process of developing a plan for a 6.0 to 6.5 MGD plant for Fe/Mn removal to be on-line by the end of 2008. This plant will include 1.5 MG of ground storage. Another 1.0 MG ground storage facility is planned for 2009-2010. TABLE 3(B) Storage Capacity - List all storage structures and capacities. Total Storage Capacity Average Day Demand (average of last 5 years) 1,750,000 Gallons 1,900,000 Gallons per day Type of Structure Number of Structures Gallons Elevated Storage 2 1,750,000 Ground Storage 0 0 Other: - - 4 C. WATER SOURCES. List all groundwater, surface water and interconnections that supply water to the system. Add or delete lines to the tables as needed. TABLE 4(A) Total Water Source Capacity for System (excluding emergency connections) Total Capacity of Sources 4,700 Gallons per minute Firm Capacity (largest pump out of service) 3,500 Gallons per minute TABLE 4(B) Groundwater Sources - Copies of water well records and well maintenance information should be included with the public water supplier’s copy of the plan in Attachment “A”. If there are more wells than space provided or multiple well fields, please use the List of Wells template (see Resources) and include as Attachment . Well # or name Unique Well Number Year Installed Well & Casing Depth (ft) Well Diameter (in) Capacity (GPM) Geologic Unit Status 3 207308 1973 364/268 16 1,200 Jordan Active 4 110452 1975 345/264 16 1,100 Jordan Active 5 420954 1988 372/290 18 1,000 Jordan Active 6 603083 2001 410/318 24 950 Jordan Active 7 655913 2003 640/415 12 450 FIG Active Status: Active use, Emergency, Standby, Seasonal, Peak use, etc. GPM – Gallons per Minute Geologic Unit: Name of formation(s), which supplies water to the well TABLE 4(C) Surface Water Sources Intake ID Resource name Capacity (GPM/MGD) NA NA NA GPM – Gallons per Minute MGD – Million Gallons per Day TABLE 4(D) Wholesale or Retail Interconnections - List interconnections with neighboring suppliers that are used to supply water on a regular basis either wholesale or retail. Water Supply System Capacity (GPM/MGD) Wholesale or retail NA NA NA GPM – Gallons per Minute MGD – Million Gallons per Day TABLE 4(E) Emergency Interconnections - List interconnections with neighboring suppliers or private sources that can be used to supply water on an emergency or occasional basis. Suppliers that serve less than 3,300 people can leave this section blank, but must provide this information in Section II C. Water Supply System Capacity (GPM/MGD) Note any limitations on use City of Savage 1.0 MGD Interconnect pipe size/zone pressure Shakopee Mdewakanton Sioux 0.25 MGD* Interconnect pipe size/zone pressure GPM – Gallons per Minute MGD – Million Gallons per Day * The SMSC are currently making water improvements including additional storage that will make more water available to the City of Prior Lake for emergency use. 5 D. DEMAND PROJECTIONS. TABLE 5 Ten Year Demand Projections Year Population Served Average Day Demand (MGD) Maximum Day Demand (MGD) Projected Demand (MGY) 2006 21,914 2.0 5.8 757.5 2007 23,060 2.1 6.1 781.5 2008 24,206 2.2 6.4 795.2 2009 25,352 2.3 6.7 832.8 2010 26,500 2.4 6.8 870.5 2011 27,180 2.45 7.1 892.9 2012 27,860 2.5 7.2 915.2 2013 28,540 2.55 7.4 937.5 2014 29,220 2.6 7.5 959.9 2015 29,900 2.7 7.8 982.2 MGD – Million Gallons per Day MGY – Million Gallons per Year Projection Method. Describe how projections were made, (assumptions for per capita, per household, per acre or other methods used). 1) Projected Demand = 90 gpcd * 365 days * population (assumes 250 homes per year growth) 2) Average Day Demand = Projected Demand/365 days 3) Maximum Day Demand = Projected Day Demand * 2.9 peaking factor (based on historical average peaking factor) - 90 gpcd (2005) - 2.9 peaking factor is based on actual conditions in 2005 and 2006 E. RESOURCE SUSTAINABILITY Sustainable water use: use of water to provide for the needs of society, now and in the future, without unacceptable social, economic, or environmental consequences. Monitoring. Records of water levels should be maintained for all production wells and source water reservoirs/basins. Water level readings should be taken monthly for a production well or observation well that is representative of the wells completed in each water source formation. TABLE 6 Monitoring Wells - List all wells being measured. Unique well number Type of well (production, observation) Frequency of Measurement (daily, monthly etc.) Method of Measurement (steel tape, SCADA etc.) 6 207308 (#3) Production Daily SCADA 110452 (#4) Production Daily SCADA 420954 (#5) Production Daily SCADA 603083 (#6) Production Daily SCADA 756201 (#7) Production Daily SCADA Water Level Data. Summarize water level data including seasonal and long-term trends for each ground and/or surface water source. If water levels are not measured and recorded on a routine basis then provide the static water level (SWL) when the well was constructed and a current water level measurement for each production well. Also include all water level data taken during well and pump maintenance. The City’s water level trending data has not indicated any decrease in water levels. However when Wells 3, 4 and 5 are operated together at full capacity Well 5 is impacted. City Staff monitors this very closely during peak water use season. The City is in the process of upgrading our printout capabilities for water level data records. Until this is complete comparison graph printouts will not be available. Additionally we will be working on our SCADA system to make the data printout more user friendly. The City is proposing to install 5 monitoring wells as part of our pumping test of the Jordan Aquifer. These will be useful in monitoring the effects of well field development. Additionally the City constructed a FIG monitoring well in 2004. Ground Water Level Monitoring – DNR Waters in conjunction with federal and local units of government maintain and measure approximately 750 observation wells around the state. Ground water level data are available online www.dnr.state.mn.us/waters. Information is also available by contacting the Ground Water Level Monitoring Manager, DNR Waters, 500 Lafayette Road, St. Paul, MN 55155 -4032 or call (651) 259-5700. Natural Resource Impacts. Indicate any natural resource features such as calcareous fens, wetlands, trout streams, rivers or surface water basins that are or could be influenced by water withdrawals from municipal production wells. Also indicate if resource protection thresholds have been established and if mitigation measures or management plans have been developed. The City of Prior Lake has completed initial modeling studies that indicate there is some level of influence between the City’s Jordan wells and the Savage Fen. The City has discussed the impacts with the DNR and is currently working on options to reduce the impacts. The City is currently undertaking a aquifer pumping test on the west side of Prior Lake to establish whether or not the lake acts as a sufficient barrier to the fen. Upon completion of this test the City will be working with the DNR to develop a long term water supply source strategy. Sustainability. Evaluate the adequacy of the resource to sustain current and projected demands. Describe any modeling conducted to determine impacts of projected demands on the resource. The City has several challenges in developing a sustainable ground water sources. The Jordan aquifer presents 2 challenges to the City: 7 1) Because of the large bedrock valley running across the City the area for Jordan well development is limited. 2) Development of Jordan wells may also be substantially inhibited by influence on the Savage Fen. The FIG aquifer is present but does not generate adequate water supply. The City has one existing FIG well that produces 300 gpm. The City is currently developing a 2nd FIG well and will be closely monitoring the production. The goal of the City’s current studies is to establish the necessary parameters for development of a long term source water strategy with the DNR. Source Water Protection Plans. The emergency procedures in this plan are intended to comply with the contingency plan provisions required in the Minnesota Department of Health’s (MDH) Wellhead Protection (WHP) Plan and Surface Water Protection (SWP) Plan. Date WHP Plan Adopted: Part 1 of the WHP was adopted by the City on April 17, 2006. The City is currently completing Part 2. The MDH approved Part 1 in November of 2005. The City recently received the Part 2 Scoping document and will be working toward completion in the spring of 2007. The final plan is due in fall of 2007. Date for Next WHP Update: See above SWP Plan: X In Process Completed Not Applicable The SWP is scheduled for adoption by the City Council on June 26, 2006. F. CAPITAL IMPROVEMENT PLAN (CIP) Adequacy of Water Supply System. Are water supply installations, treatment facilities and distribution systems adequate to sustain current and projected demands? Yes X No If no, describe any potential capital improvements over the next ten years and state the reasons for the proposed changes (CIP Attachment A). The City completed a comprehensive water system CIP analysis that is scheduled for approval on June 26th by the City Council. The 5 year CIP (2007-2011) is attachment “A” to this document. The major system improvements are as follows: 2006 a) Complete Wells #8 and #9 b) Begin Water Treatment Plant #1 design c) Initiate Well #10 and bedrock valley pumping test including installation of monitoring wells. 8 2007 a) Install CR 21 raw water lines to treatment plant b) Begin Water Treatment Plant #1 and 1.5 MG underground water storage construction c) Install CR 82 Trunk Watermain 2008 a) Construct Well #11 b) Install Brooksville Hills raw water lines to treatment plant 2009 a) Construct 1.0 MG underground water storage in Wilds Ridge Area b) Install CR 21 Trunk Watermain 2010 a) Install CR 12 Trunk Watermain to annexation area In addition to the above CIP improvements the City anticipates construction of Wells No. 12 (2012) and Well No. 13 (2014) along with a 2nd Water Treatment Plant and ground storage to be located in the annexation area by 2015 based on the current rate of growth. Proposed Water Sources. Does your current CIP include the addition of new wells or intakes? X Yes No If yes, list the number of new installations and projected water demands from each for the next ten years. Plans for new production wells must include the geologic source formation, well location, and proposed pumping capacity. Well Year Formation Location Pumping Capacity #8* 2006 Jordan Maintenance Center 1,000 gpm #9* 2006 FIG Maintenance Center 400 gpm #10 2007 Jordan Spring Lake Estates 1,000 gpm #11 2008 Jordan CR 87 1,000 gpm *Under construction for completion in Summer of 2006 Water Source Alternatives. If new water sources are being proposed, describe alternative sources that were considered and any possibilities of joint efforts with neighboring communities for development of supplies. The City of Prior Lake is monitoring the City of Burnsville/Kramer Quarry proposal for a surface water plant. This will require the City of Savage to participate, as the water would need to be delivered through their system. It appears that a maximum of 1.0 MGD could be available for to the City of Prior Lake. The cost and feasibility of this source are still be evaluated as it will not meet the City’s ultimate growth needs. Preventative Maintenance. Long-term preventative programs and measures will help reduce the risk of emergency situations. Identify sections of the system that are prone to failure due to age, 9 materials or other problems. This information should be used to prioritize capital improvements, preventative maintenance, and to determine the types of materials (pipes, valves, couplings, etc.) to have in stock to reduce repair time. The City annually undertakes a reconstruction project. This project typically involves replacement of all valves, hydrants and water services in the project area. Additionally segments of watermain are replaced as needed. All City valves and hydrants are evaluated at least once a year. 10 PART II. EMERGENCY RESPONSE PROCECURES Water emergencies can occur as a result of vandalism, sabotage, accidental contamination, mechanical problems, power failures, drought, flooding, and other natural disasters. The purpose of emergency planning is to develop emergency response procedures and to identify actions needed to improve emergency preparedness. In the case of a municipality, these procedures should be in support of, and part of, an all-hazard emergency operations plan. If your community already has written procedures dealing with water emergencies we recommend that you use these guidelines to review and update existing procedures and water supply protection measures. Federal Emergency Response Plan Section 1433(b) of the Safe Drinking Water Act as amended by the Public Health Security and Bioterrorism Preparedness and Response Act of 2002 (Public Law 107-188, Title IV – Drinking Water Security and Safety) requires community water suppliers serving over 3,300 people to prepare an Emergency Response Plan. Community water suppliers that have completed the Federal Emergency Response Plan and submitted the required certification to the U.S. Environmental Protection Agency have satisfied Part II, Sections A, B, and C of these guidelines and need only provide the information below regarding the emergency response plan and source water protection plan and complete Sections D (Allocation and Demand Reduction Procedures), and E (Enforcement). Provide the following information regarding your completed Federal Emergency Response Plan: Emergency Response Plan Contact Person Contact Number Emergency Response Lead Steve Albrecht 952-447-9890 (o) 952-292-2081 (m) Alternate Emergency Response Lead Craig Eldred 952-447-9891 (o) 952-292-2083 (m) Emergency Response Plan Certification Date December 2004 Operational Contingency Plan. An operational contingency plan that describes measures to be taken for water supply mainline breaks and other common system failures as well as routine maintenance is recommended for all utilities. Check here if the utility has an operational contingency plan. At a minimum a contact list for contractors and supplies should be included in a water emergency telephone list. The City has completed the Federal Emergency Response Plan and is currently developing a routine maintenance and main break standard procedure. Communities that have completed Federal Emergency Response Plans should skip to Section D. 11 EMERGENCY RESPONSE PROCEDURES A. Emergency Telephone List. A telephone list of emergency contacts must be included as Attachment “B” to the plan (complete template or use your own list). The list should include key utility and community personnel, contacts in adjacent communities, and appropriate local, state and federal emergency contacts. Please be sure to verify and update the contacts on the emergency telephone list on a regular basis (once each year recommended). In the case of a municipality, this information should be contained in a notification and warning standard operating procedure maintained by the warning point for that community. Responsibilities and services for each contact should be defined. B. Current Water Sources and Service Area. Quick access to concise and detailed information on water sources, water treatment, and the distribution system may be needed in an emergency. System operation, water well and maintenance records should be maintained in a central secured location so that the records are accessible for emergency purposes and preventative maintenance. A detailed map of the system showing the treatment plants, water sources, storage facilities, supply lines, interconnections, and other information that would be useful in an emergency should also be readily available. Check here X if these records and maps exist and staff can access the documents in the event of an emergency. C. Procedure for Augmenting Water Supplies. List all available sources of water that can be used to augment or replace existing sources in an emergency. In the case of a municipality, this information should be contained in a notification and warning standard operating procedure maintained by the warning point for that community. Copies of cooperative agreements should be maintained with your copy of the plan and include in. The interconnection agreements between the City’s and SMSC detail the protocol. Be sure to include information on any physical or chemical problems that may limit interconnections to other sources of water. Approvals from the MN Department of Health are required for interconnections and reuse of water. TABLE 7 (A) Public Water Supply Systems – List interconnections with other public water supply systems that can supply water in an emergency. Water Supply System Capacity (GPM/MGD) Note any limitations on use City of Savage 1.0 MGD Shakopee Mdewakanton Sioux Community (SMSC) 0.25 MGD The SMSC are currently completing upgrades to their system which will increase the available emergency supply. GPM – Gallons per Minute MGD – Million Gallons per Day 12 TABLE 7 (B) - Private Water Sources – List other sources of water available in an emergency. Name Capacity (GPM/MGD) Note any limitations on use None GPM – Gallons per Minute MGD – Million Gallons per Day D. Allocation and Demand Reduction Procedures. The plan must include procedures to address gradual decreases in water supply as well as emergencies and the sudden loss of water due to line breaks, power failures, sabotage, etc. During periods of limited water supplies public water suppliers are required to allocate water based on the priorities established in Minnesota Statutes 103G.261. Water Use Priorities (Minnesota Statutes 103G.261) First Priority. Domestic water supply, excluding industrial and commercial uses of municipal water supply, and use for power production that meets contingency requirements. NOTE: Domestic use is defined (MN Rules 6115.0630, Subp. 9 ), as use for general household purposes for human needs such as cooking, cleaning, drinking, washing, and waste disposal, and uses for on -farm livestock watering excluding commercial livestock operations which use more than 10,000 gallons per day or one million gallons per year. Second Priority. Water uses involving consumption of less than 10,000 gallons per day. Third Priority. Agricultural irrigation and processing of agricultural products. Fourth Priority. Power production in excess of the use provided for in the contingency plan under first priority. Fifth Priority. Uses, other than agricultural irrigation, processing of agricultural products, and power production. Sixth Priority. Non-essential uses. These uses are defined by Minnesota Statutes 103G.291 as lawn sprinkling, vehicle washing, golf course and park irrigation, and other non-essential uses. List the statutory water use priorities along with any local priorities (hospitals, nursing homes, etc.) in Table 8. Water used for human needs at hospitals, nursing homes and similar types of facilities should be designated as a high priority to be maintained in an emergency. Local allocation priorities will need to address water used for human needs at other types of facilities such as hotels, office buildings, and manufacturing plants. The volume of water and other types of water uses at these facilities must be carefully considered. After reviewing the data, common sense should dictate local allocation priorities to protect domestic requirements over certain types of economic needs. In Table 8, list the priority ranking, average day demand and demand reduction potential for each customer category (modify customer categories if necessary). Table 8 Water Use Priorities Customer Category Allocation Priority Average Day Demand (GPD) Demand Reduction Potential (GPD) Domestic Water Supply 1 1,700,000 200,000 Low Volume Water Users (< 10,000 gpd) 2 Not broken out from Domestic at this time 0 Agricultrural Irrigation/ Ag 3 0 0 13 Processing Power Production 4 0 0 Com/Inst/Ind. 5 130,000 60,000 Irrigation 6 * * Wholesale 6 ** ** TOTALS 1,830,000 260,000 GPD – Gallons per Day *The reduction shown under Com/Inst/Ind reflects the reduction in irrigation by those users. **The City will be installing a bulk filling station this year which will allow us to better track and estimate savings of water use for this priority. Demand Reduction Potential. The demand reduction potential for residential use will typically be the base demand during the winter months when water use for non-essential uses such as lawn watering do not occur. The difference between summer and winter demands typically defines the demand reduction that can be achieved by eliminating non-essential uses. In extreme emergency situations lower priority water uses must be restricted or eliminated to protect first priority domestic water requirements. Short-term demand reduction potential should be based on average day demands for customer categories within each priority class. Triggers for Allocation and Demand Reduction Actions. Triggering levels must be defined for implementing emergency responses, including supply augmentation, demand reduction, and water allocation. Examples of triggers include: water demand >100% of storage, water level in well(s) below a certain elevation, treatment capacity reduced 10% etc. Each trigger should have a quantifiable indicator and actions can have multiple stages such as mild, moderate and severe responses. Check each trigger below that is used for implementing emergency responses and for each trigger indicate the actions to be taken at various levels or stages of severity in Table 9. X Water Demand X Water Main Break Treatment Capacity X Loss of Production X Storage Capacity X Security Breach X Groundwater Levels X Contamination Surface Water Flows or Levels Other (list in Table 9) X Pump, Booster Station or Well Out of Service X Governor’s Executive Order – Critical Water Deficiency (required by statute) Table 9 Demand Reduction Procedures Condition Trigger(s) Actions Stage 1 (Mild) Seasonal\Water Demand The City implements seasonal water bans form May 1 though September 1 annually. Stage 2 (Moderate) Storage Capacity Groundwater Levels Well Out of Service Water Main Break Loss of Production When City Towers are below critical level for fire protection due to the listed triggers. 1)Work with SMSC and City of Savage to augment water system to meet need. 2) Consider complete outdoor watering ban not just odd sides for outdoor uses identified in plan. Stage 3 (Severe) Security Breach Contamination 1) Implement City’s Emergency response plan. Critical Water Deficiency Executive Order by Governor & as Stage 1: Restrict lawn watering, vehicle washing, golf course and park irrigation and other 14 (M.S. 103G.291) provided in above triggers nonessential uses Stage 2: Suspend lawn watering, vehicle washing, golf course and park irrigation and other nonessential uses Note: The potential for water availability problems during the onset of a drought are almost impossible to predict. Significant increases in demand should be balanced with preventative measures to conserve supplies in the event of prolonged drought conditions. Notification Procedures. List methods that will be used to inform customers regarding conservation requests, water use restrictions, and suspensions. Customers should be aware of emergency procedures and responses that they may need to implement. City uses the following media outlets: Cable TV, user email lists, Prior Lake American, City News Letter, Local Media E. Enforcement. Minnesota Statutes require public water supply authorities to adopt and enforce water conservation restrictions during periods of critical water shortages. Public Water Supply Appropriation During Deficiency. Minnesota Statutes 103G.291, Subdivision 1. Declaration and conservation. (a) If the governor determines and declares by executive order that there is a critical water deficiency, public water supply authorities appropriating water must adopt and enforce water conservation restrictions within their jurisdiction that are consistent with rules adopted by the commissioner. (b) The restrictions must limit lawn sprinkling, vehicle washing, golf course and park irrigation, and other nonessential use s, and have appropriate penalties for failure to comply with the restrictions. An ordinance that has been adopted or a draft ordinance that can be quickly adopted to comply with the critical water deficiency declaration must be included in the plan (include with other ordinances in Attachment 7 for Part III, Item 4). Enforcement responsibilities and penalties for non-compliance should be addressed in the critical water deficiency ordinance. Sample regulations are available at www.dnr.state.mn.us/waters Authority to Implement Water Emergency Responses. Emergency responses could be delayed if city council or utility board actions are required. Standing authority for utility or city managers to implement water restrictions can improve response times for dealing with emergencies. Who has authority to implement water use restrictions in an emergency? X Utility Manager X City Manager X City Council or Utility Board Other (describe): Emergency Preparedness. If city or utility managers do not have standing authority to implement water emergency responses, please indicate any intentions to delegate that authority. Also indicate any other measures that are being considered to reduce delays for implementing emergency responses. All emergency staff carry contact lists and have on duty phones pre-programmed with mobile and home phone numbers. Additionally alternate staff are named during vacation periods by critical staff. 15 16 PART III. WATER CONSERVATION PLAN Water conservation programs are intended to reduce demand for water, improve the efficiency in use and reduce losses and waste of water. Long-term conservation measures that improve overall water use efficiencies can help reduce the need for short-term conservation measures. Water conservation is an important part of water resource management and can also help utility managers satisfy the ever-increasing demands being placed on water resources. Minnesota Statutes 103G.291, requires public water suppliers to implement demand reduction measures before seeking approvals to construct new wells or increases in authorized volumes of water. Minnesota Rules 6115.0770, require water users to employ the best available means and practices to promote the efficient use of water. Conservation programs can be cost effective when compared to the generally higher costs of developing new sources of supply or expanding water and/or wastewater treatment plant capacities. A. Conservation Goals. The following section establishes goals for various measures of water demand. The programs necessary to achieve the goals will be described in the following section. Unaccounted Water (calculate five year averages with data from Table 1) Average annual volume unaccounted water for the last 5 years 53,374,706 gallons Average percent unaccounted water for the last 5 years 7.7 percent AWWA recommends that unaccounted water not exceed 10%. Describe goals to reduce unaccounted water if the average of the last 5 years exceeds 10%. 2002 is excluded due to water record issues. Residential Gallons Per Capita Demand (GPCD) Average residential GPCD use for the last 5 years (use data from Table 1) 88.3 GPCD In 2002, average residential GPCD use in the Twin Cities Metropolitan Area was 75 GPCD. Describe goals to reduce residential demand if the average for the last 5 years exceeds 75 GPCD. 1) Active water restriction enforcement including weekends implemented in summer of 2005 and 2006. Morning and weekend tagging enforcement. 2) Active public information campaigns in 2005 and 2006. 3) The City is considering revising the enforcement procedures to up the fines associated with violations. We are going to evaluate our number of repeat offenders after this summer to determine if bigger fines are warranted. City saw GPCD drop in 2005 to 78.1 and is striving to make this a trend not an anomaly. Total Per Capita Demand: From Table 1, is the trend in overall per capita demand over the past 10 years X increasing or decreasing? If total GPCD is increasing, describe the goals to lower overall per capita demand or explain the reasons for the increase. The overall trend did increase however the current trend shows a decrease. We hope the above listed goals will continue this trend. Additionally stabilized growth of 175-250 new units per 17 year should help long term. Peak Demands (calculate average ratio for last five years using data from Table 1) Average maximum day to average day ratio 2.6 If peak demands exceed a ratio of 2.6, describe the goals for lowering peak demands. Continue active enforcement and awareness of watering restrictions. B. Water Conservation Programs. Describe all short-term conservation measures that are available for use in an emergency and long-term measures to improve water use efficiencies for each of the six conservation program elements listed below. Short-term demand reduction measures must be included in the emergency response procedures and must be in support of, and part of, a community all-hazard emergency operation plan. 1. Metering. The American Water Works Association (AWWA) recommends that every water utility meter all water taken into its system and all water distributed from its system at its customer’s point of service. An effective metering program relies upon periodic performance testing, repair, repair and maintenance of all meters. AWWA also recommends that utilities conduct regular water audits to ensure accountability. Complete Table 10 (A) regarding the number and maintenance of customer meters. TABLE 10 (A) Customer Meters Number of Connections Number of Metered Connections Meter testing schedule (years) Average age/meter replacement schedule (years) Residential 7,047 7,047 None <10 / 15-20 Com/Inst/Ind 158 158 Annual 3 or less/ as needed based on annual testing Public Facilities 6 3 Annual 5 or less/ as needed based on annual testing Other / TOTALS 911 908 Unmetered Systems. Provide an estimate of the cost to install meters and the projected water savings from metering water use. Also indicate any plans to install meters. Currently the biggest un-metered facility is our bulk water loading. While the City tracks users the manual metering is very inaccurate. The City will be installing a bulk water station with card reader this year for a cost of about $15,000.00. The City estimates a loss of about $7,000 annually in non-metered bulk water use. This will also reduce the City’s unaccounted for water use. 18 TABLE 10 (B) Water Source Meters Number of Meters Meter testing schedule (years) Average age/meter replacement schedule (years) Water Source (wells/intakes) 5 annually 15 years/ as needed based on annual testing Treatment Plant None / 2. Unaccounted Water. Water audits are intended to identify, quantify, and verify water and revenue losses. The volume of unaccounted-for water should be evaluated each billing cycle. The AWWA recommends a goal of ten percent or less for unaccounted-for water. Water audit procedures are available from the AWWA and MN Rural Water Association. Frequency of water audits: each billing cycle yearly X other: City staff completes informal water audits monthly as we review water use data to detect issues. Leak detection and survey: every year every years X periodic as needed Year last leak detection survey completed: The City completes segmented leak detection surveys annually. Reducing Unaccounted Water. List potential sources and efforts being taken to reduce unaccounted water. If unaccounted water exceeds 10% of total withdrawals, include the timeframe for completing work to reduce unaccounted water to 10% or less. The City will be installing a bulk water station this year which will help reduce the unnacounted by an estimated 0.4%. The City is also looking at adding a budgetary amount for contract valve replacement services which would increase the amount of repairs done annually and thereby decrease water loss. 3. Conservation Water Rates. Plans must include the current rate structure for all customers and provide information on any proposed rate changes. Discuss the basis for current price levels and rates, including cost of service data, and the impact current rates have on conservation. Billing Frequency: Monthly X Bimonthly Quarterly Other (describe): Volume included in base rate or service charge: 1,000 gallons or cubic feet Conservation Rate Structures X Increasing block rate: rate per unit increases as water use increases Seasonal rate: higher rates in summer to reduce peak demands 19 Service charge or base fee that does not include a water volume Conservation Neutral Rate Structure Uniform rate: rate per unit is the same regardless of volume Non-conserving Rate Structures Service charge or base fee that includes a large volume of water Declining block rate: rate per unit decreases as water use increases Flat rate: one fee regardless of how much water is used (unmetered) Other (describe): Water Rates Evaluated: every year X every 3 years no schedule Date of last rate change: Declining block (the more water used, the cheaper the rate) and flat (one fee for an unlimited volume of water) rates should be phased out and replaced with conservation rates. Incorporating a seasonal rate structure and the benefits of a monthly billing cycle should also be considered along with the development of an emergency rate structure that could be quickly implemented to encourage conservation in an emergency. Current Water Rates. Include a copy of the actual rate structure in Attachment or list current water rates including base/service fees and volume charges below. Current Water Rates Tier 1 User ($/1,000 gal up to 25,000 gal) = $2.65/1,000 gal Tier 2 User ($/1,000 gal over 25,000 gal) = 3.65/1,000 gal There is no separate category for institutional, commercial or industrial users. Non-conserving Rate Structures. Provide justification for the rate structure and its impact on reducing demands or indicate intentions including the timeframe for adopting a conservation rate structure. Not applicable 4. Regulation. Plans should include regulations for short-term reductions in demand and long-term improvements in water efficiencies. Sample regulations are available from DNR Waters. Copies of adopted regulations or proposed restrictions should be included in Attachment of the plan. Indicate any of the items below that are required by local regulations and also indicate if the requirement is applied each year or just in emergencies. X Time of Day: no watering between 11 am and 5 pm 20 (reduces evaporation) year around X seasonal emergency only X Odd/Even: (helps reduce peak demand) year around X seasonal emergency only Water waste prohibited (no runoff from irrigation systems) Describe ordinance: Limitations on turf areas for landscaping (reduces high water use turf areas) Describe ordinance: X Soil preparation (such as 4”-6” of organic soil on new turf areas with sandy soil) Describe ordinance: Included in ordinance however enforcement has not been consistant. X Tree ratios (plant one tree for every square feet to reduce turf evapotranspiration) Describe ordinance: A minimum of 2 trees are required per lot for all new homes. X Prohibit irrigation of medians or areas less than 8 feet wide Describe ordinance: Irrigation is allowed by permit only. No vegetative areas less than 8 feet are permitted. Permit required to fill swimming pool every year emergency only Other (describe): State and Federal Regulations (mandated) X Rainfall sensors on landscape irrigation systems. Minnesota Statute 103G.298 requires “All automatically operated landscape irrigation systems shall have furnished and installed technology that inhibits or interrupts operation of the landscape irrigation system during periods of sufficient moisture. The technology must be adjustable either by the end user or the professional practitioner of landscape irrigation services.” X Water Efficient Plumbing Fixtures. The 1992 Federal Energy Policy Act established manufacturing standards for water efficient plumbing fixtures, including toilets, urinals, faucets, and aerators. Enforcement. Are ordinances enforced? X Yes No If yes, indicate how ordinances are enforced along with any penalties for non-compliance. Watering Ordinance: Odd/Even ban with watering permitted between 11 a.m. and 5 p.m. During ban on call staff patrols City on weekends to identify violators. During peak weekends additional staff are added for enforcement and police department also acts as spotters for public works staff. 1) First violation a warning is given. 2) 2nd violation a $25 fine per day is levied on water bill 3) Water service is shut-off Last year staff did fine several residences. To date no shut-offs have been required. Weekend patrols seemed to result in higher compliance and therefore are being continued this year. The above listed state and federal regulations are enforced via the building permit process. 21 5. Education and Information Programs. Customers should be provided information on how to improve water use efficiencies a minimum of two times per year. Information should be provided at appropriate times to address peak demands. Emergency notices and educational materials on how to reduce water use should be available for quick distribution during an emergency. If any of the methods listed in the table below are used to provide water conservation tips, indicate the number of times that information is provided each year and attach a list of education efforts used for the last three years. Current Education Programs Times/Year Billing inserts or tips printed on the actual bill 2 Consumer Confidence Reports 1 Local news papers 2 Community news letters 7 Direct mailings (water audit/retrofit kits, showerheads, brochures) 0 Information at utility and public buildings Yes Public Service Announcements No Cable TV Programs 2 Demonstration projects (landscaping or plumbing) No K-12 Education programs (Project Wet, Drinking Water Institute) No School presentations No Events (children’s water festivals, environmental fairs) Yes 1 Community education No Water Week promotions No Information provided to groups that tour the water treatment plant Na Website (include address: cityof priorlake.com ) Yes Targeted efforts (large volume users, users with large increases) 0 Notices of ordinances (include tips with notices) 2 Emergency conservation notices (recommended) 2 Other: List education efforts for the last three years in of the plan. Be sure to indicate whether educational efforts are on-going and which efforts were initiated as an emergency or drought management effort. Ongoing Community Education Plan (annual) Year Round (04-06): a) Literature on water conservation available at City Hall and Public Works Buildings b) Website info on water conservation March(04-06): a) Tips on billing b)Community News Letter April (04-06): a) Local News Paper b) Community News Letter c) Cable TV “Inside City Hall” d) Published Notices on Ordinances and Conservation in Prior Lake American. May (04-06): a) Local News Paper b) Community News Letter c) Published Notices on 22 Ordinances and Conservation in Prior Lake American. June (04-06): a) Community Newsletter b) active watering restriction enforcement July (04-06): a) Community Newsletter b) active watering restriction enforcement August (04-06): a) Community Newsletter b) active watering restriction enforcement c) Informational booth at Lake Front Days (06 only) September (04-06): a) Community Newsletter Proposed Education Programs. Describe any additional efforts planned to provide conservation information to customers a minimum of twice per year (required if there are no current efforts). The City is looking to add an educational program as part of tours for the Water Treatment Plant currently under consideration. The City’s biggest effort will be in establishing the best ways to reach the public. A packet of conservation tips and information can be obtained by contacting DNR Waters or the Minnesota Rural Water Association (MRWA). The American Water Works Association (AWWA) www.awwa.org or www.waterwiser.org also has excellent materials on water conservation that are available in a number of formats. You can contact the MRWA 800/367 - 6792, the AWWA bookstore 800/926-7337 or DNR Waters 651/259-5703 for information regarding educational materials and formats that are available. 6. Retrofitting Programs. Education and incentive programs aimed at replacing inefficient plumbing fixtures and appliances can help reduce per capita water use as well as energy costs. It is recommended that communities develop a long-term plan to retrofit public buildings with water efficient plumbing fixtures and that the benefits of retrofitting be included in public education programs. You may also want to contact local electric or gas suppliers to see if they are interested in developing a showerhead distribution program for customers in your service area. A study by the AWWA Research Foundation (Residential End Uses of Water, 1999) found that the average indoor water use for a non-conserving home is 69.3 gallons per capita per day (gpcd). The average indoor water use in a conserving home is 45.2 gpcd and most of the decrease in water use is related to water efficient plumbing fixtures and appliances that can reduce water, sewer and energy costs. In Minnesota, certain electric and gas providers are required (Minnesota Statute 216B.241) to fund programs that will conserve energy resources and some utilities have distributed water efficient showerheads to customers to help reduce energy demands required to supply hot water. Retrofitting Programs. Describe any education or incentive programs to encourage the retrofitting of inefficient plumbing fixtures (toilets, showerheads, faucets, and aerators) or appliances (washing machines). With the completion of the new City Hall and Police Station later this year all major City 23 Facilities will be less than 12 years old. Water and Energy conservation measures have been implemented at all facilities. The City does not currently have a retrofitting program for existing users. The City is evaluating this as a tool when dealing with reclassification water users based on conservation measures implemented by the user. The City’s largest private water users are generally Homeowners Associations. City Staff is looking at proposing a retrofitting program that offer financial assistance for Plan Approval. Water Emergency and Conservation Plans must be approved by the Department of Natural Resources (DNR) every ten years. Please submit plans for approval to the following address: DNR Waters or Submit electronically to Water Permit Programs Supervisor wateruse@dnr.state.mn.us. 500 Lafayette Road St. Paul, MN 55155-4032 Adoption of Plan. All DNR plan approvals are contingent on the formal adoption of the plan by the city council or utility board. Please submit a certificate of adoption (example available) or other action adopting the plan. The Plan is scheduled for adoption by the City Council at its July 17, 2006 meeting. Metropolitan Area communities are also required to submit these plans to the Metropolitan Council. Please see PART IV. ITEMS FOR METROPOLITAN AREA PUBLIC SUPPLIERS. 24 METROPOLITAN COUNCIL PART IV. ITEMS FOR METROPOLITAN AREA PUBLIC SUPPLIERS Minnesota Statute 473.859 requires water supply plans to be completed for all local units of government in the seven-county Metropolitan Area as part of the local comprehensive planning process. Much of the required information is contained in Parts I-III of these guidelines. However, the following additional information is necessary to make the water supply plans consistent with the Metropolitan Land Use Planning Act upon which local comprehensive plans are based. Communities should use the information collected in the development of their plans to evaluate whether or not their water supplies are being developed consistent with the Council's Water Resources Management Policy Plan. Policies. Provide a statement(s) on the principles that will dictate operation of the water supply utility: for example, "It is the policy of the city to provide good quality water at an affordable rate, while assuring this use does not have a long-term negative resource impact." It is the City’s goal to provide a reliable, sustainable, quality and environmentally responsible water source for existing and future residents. Impact on the Local Comprehensive Plan. Identify the impact that the adoption of this water supply plan has on the rest of the local comprehensive plan, including implications for future growth of the community, economic impact on the community and changes to the comprehensive plan that might result. This plan was developed within the framework of the 2030 Comp Plan. Demand Projections Year Total Community Population Population Served Average Day Demand (MGD) Maximum Day Demand (MGD) Projected Demand (MGY) 2010 26,500 26,500 2.4 6.8 870.5 2020 33,300 33,300 3.0 8.7 1,093.0 2030 40,000 40,000 3.6 10.4 1,314.0 Ultimate 40,000 40,000 3.6 10.4 1,314.0 Population projections should be consistent with those in the Metropolitan Council’s 2030 Regional Development Framework or the Communities 2008 Comprehensive Plan update. If population served differs from total population, explain in detail why the difference (ie, service to other communities, not complete service within community etc.). PLAN SUBMITTAL AND REVIEW OF THE PLAN The plan will be reviewed by the Council according to the sequence outlined in Minnesota Statutes 473.175. Prior to submittal to the Council, the plan must be submitted to adjacent governmental units for a 60-day review period. Following submittal, the Council determines 25 if the plan is complete for review within 15 days. If incomplete, the Council will notify the community and request the necessary information. When complete the Council will complete its review within 60 days or a mutually agreed upon extension. The community officially adopts the plan after the Council provides its comments. Plans can be submitted electronically to the Council; however, the review process will not begin until the Council receives a paper copy of the materials. Electronic submissions can be via a CD, 3 ½” floppy disk or to the email address below. Metropolitan communities should submit their plans to: Reviews Coordinator electronically to: Metropolitan Council watersupply@metc.state.mn.us 230 E 5th Street, St. Paul, MN 55101