HomeMy WebLinkAboutDraft Phase I Environ Site Assess
7710 Computer Avenue, Suite101
Minneapolis, Minnesota 55435
(612) 831-3341
Fax (6121 831-4552
Mr. Michael Lewis
Crystal Care, LLC
5200 Willson Road
Suite 150
Edina, Minnesota 55424
July 26, 2000
RE: Proposed Crystal Care Housing Development
Southeast of Highway 13 and Toronto Avenue
Prior Lake, Minnesota
Dear Mr. Lewis:
Enclosed are two copies of the draft Phase I Environmental Site Assessment report for
the Prior Lake site. The following is a summary of the environmental issues related to
both the subject property and the TJ's Tire and Towing site:
Subject Property
. Three areas of surficial debris were identified on the subject property. Debris Areas 1
and 2 were located on the northern portion of the property, immediately south ofTJ's
Towing property. Debris Area 3 was located on the central portion of the property.
No evidence of significant amounts of buried debris (e.g. hummock ground surface or
material partially buried or protruding from the ground) were noted on the debris
areas.
. Materials located in Debris Areas I and 2 (i.e. a drum of unknown contents, parts
washer, oil stained carpet and oil soaked sorb ant material in Area 1 and the roofing
material and a car battery in Area 2) appear to contain or have previously contained
petroleum products and potential hazardous substances such as solvents. Although
no evidence of a specific release was observed in these areas (with the possible
exception of the oil soaked sorbant material observed on the ground surface in Area
I), this potential for a release represents a recognized environmental condition.
I Limited Phase II investigation in the Debris Areas 1 and 2 appears warranted to
confirm that no significant releases of petroleum products or hazardous substances
have occurred in these areas.
. Small amounts of discarded debris was observed at several other locations on the
property and included items such as tires, rusted metal, and an empty rusty drum.
Due the presence of dense vegetation which obscured direct observations of the
ground surface at all locations, there is a potential that other debris than observed
during the site reconnaissance and noted in this report could be present on the subject
property .
Peer Env ronmental & Eng neer ng Resources,
I n c.
Michael Lewis
Crystal Care, LLC
Page 2
July 26, 2000
. All identified debris should be properly characterized and removed from the property
prior to its development. Because the various materials may contain residual product
or may be contaminated with petroleum products or other hazardous substances,
some of these materials will require special handling and disposal procedures.
. Based on review of the MPCA files regarding the TJ's Tire and Towing and the EZ
Stop service station petroleum releases, it appears there is a low potential that shallow
groundwater at the subject property has been contaminated by these sources.
However, should the future development require construction dewatering or
permanent dewatering, sampling and testing of the groundwater would be prudent.
TJ's Tire and Towing Site
. Two gasoline underground storage tanks (USTs) were removed from the site in 1992.
The USTs were located adjacent to the existing building. Releases were reported
from both of the USTs and were investigated in 1993. The MPCA has issued file
closure for the releases in 1993 and did not require any cleanup. Groundwater occurs
a depth of about 7 feet. Ground water testing was conducted and no ground water
contamination was identified, however the testing completed was very limited in
scope and there is a potential that ground water contamination exists. In addition,
groundwater on this site may have been impacted by the adjacent EZ Stop service
station site. Petroleum contaminated soil is present in both of the former tank basins.
Should site development require excavation and dewatering, additional investigation
may be warranted and some soil cleanup may be required as part of the development.
. A waste oil UST is apparently present at the site. The UST will require removal and
environmental monitoring prior to development of the property. If a release is
identified from the waste oil UST, it will need to be investigated and cleaned up as
required by the MPCA and as needed to facilitate the site development.
. The site has had a history of auto repair operations which likely involved use and
handling of petroleum products and hazardous substances. The majority of the site is
unpaved and has apparently been used for storage and repair operations. There is a
potential that surficial contamination may exist on the exterior areas of the site. Prior
to acquisition of this site, investigation of the surficial soils at the property will likely
be required. Should surficial soil contamination be identified, it may need to be
cleaned up as part of site development.
,.
Michael Lewis
Crystal Care, LLC
Page 3
July 26, 2000
Closing Remarks
After you reviewed the enclosed report, we should meet to discuss the findings. If you
have any questions in the interim, please feel free to call us at (952) 831-3341.
S7~7n-:
Kristiaalch, P.G.
Environmental Geologist
r-"-
,
DRAFT
PHASE I ENVIRONMENTAL
SITE ASSESSMENT
Vacant Property
Southeast of Highway 13
and Toronto Avenue
Prior Lake, Minnesota
July, 2000
Prepared for:
Crystal Care, LLC
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DRAFT
PHASE I ENVIRONMENTAL SITE ASSESSMENT
VACANT PROPERTY
SOUTHEAST OF HIGHWAY 13 AND TORONTO AVENUE
PRIOR LAKE, MINNESOTA
JULY 26, 2000
Prepared for:
Crystal Care, LLC
520 Willson Road
Edina, Minnesota 55424
Prepared by:
Peer Environmental & Engineering Resources, Inc.
7710 Computer Avenue, Suite 101
Minneapolis, Minnesota 55435
(952) 831-3341
PEER File #10117
@ Peer Environmental & Engineering Resources, Inc., 2000
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TABLE OF CONTENTS
1. 0 INTRODUCTION ....................................................................................................... ................1
1.1 PURPOSE... ....... .... ...................... ...... ....... .... ............ ............... ........ .......... ......... ....... .............1
1.2 SPECIAL TERMS AND CONDITIONS ..............................................................................1
1.3 LIMITING CONDITIONS AND METHODOLOGY USED ..............................................2
2.0 BA CKG ROUND INFO RMA TI ON ..........................................................................................2
2.1 SITE LOCATION AND DESCRIPTION .............................................................................2
2.2 PROPOSED DEVELOPMENT .............................................................................................2
3.0 REeo RDS REVIEW ........................................ ..........................................................................3
3.1 SITE GEOLOGY ................ ......... ........ .............. ........... ................. ................. ......... ....... ....... 3
3 .2 PREVIOUS INVESTIGATIONS ........ ...... ........ ............ ................ .............. .......... .......... ...... 4
3.3 mSTORICAL LAND USE INFORMATION ......................................................................5
3.3.1 Historical Sources.... ................................................................................ ................5
3.3.2 Aerial Photographs...................................................................................................6
3.3.3 Historical Topographic Maps ........................ ...................... ....................................7
3.4 STATE AND FEDERAL GOVERNMENT RECORDS SEARCH ....................................8
3.4.1 Source................................ ........... ...... .............. .......................................................8
3.4.2 Subj ect Property.................................................................... .......... ............ .............8
3.4.3 Surrounding Area.............................. .......................................................................8
3.5 SCOTT COUNTY RECORDS REVIEW ...........................................................................11
4. 0 INTERVIEWS ...................... .......... ................... ........................................................................13
4.1 PROPERTY OWNER......... .............. ... ........................ ......................... ...... ..................... ....13
4.2 CITY OF PRIOR LAKE FIRE MARSHAL .......................................................................13
5.0 SITE RECO NN AISS AN CE ....... ............................ ..................................................................14
5.1 GENERAL............. ..... ............................. ............................. ........ ................. ............. ... ...... .14
5.2 SUBJECT PROPERTy.... ......................... .... ....................... .......... ................ .... ............. ......14
5.3 HAZARDOUS SUBSTANCES AND PETROLEUM PRODUCTS................................. 15
5.4 CHEMICAL OR PETROLEUM STORAGE TANKS .......................................................15
5 .5 ADJOINING PROPERTIES...... .......... .... .......... ............ ................... ........ ......... .... ........... ...15
6.0 FIND IN GS AND CON CL USI 0 NS .........................................................................................16
6.1 GENERAL... ................................ .............. ......... ............. ..................... ..... ...... ..... .... ......... ...16
6.2 RECOGNIZED ENVIRONMENTAL CONDITIONS ......................................................17
6.2.1 On-Site Recognized Environmental Conditions.... ...................... ......... .................17
6.2.2 Off-Site Recognized Environmental Conditions ...................................................18
7. 0 GENERAL REMARKS .......................................... ............. ..... ................................................18
7 .1 STANDARD OF CARE ......................................................................................................18
7.2 SUMMARY OF QUALIFICATIONS ................................................................................18
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Figure
1
Appendix
A
B
C
D
E
F
G
LIST OF FIGURES
Site Location Map
LIST OF APPENDICES
Survey Diagram
Previous Site Documentation
State and Federal Government Records Review (VISTA Report)
Previous Investigation Data - TJ's Tire and Towing
Previous Investigation Data - EZ Stop
County Records Review
Summary of Qualifications
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Phase I Environmental Site Assessment - PEER # 10117
SE of State Highway 13 and Toronto Avenue, Prior Lake, Minnesota
1.0 INTRODUCTION
1.1 PURPOSE
Peer Environmental & Engineering Resources, Inc. (PEER) was retained by Crystal Care,
LLC to perform a Phase I Environmental Site Assessment of vacant property located
southeast of State Trunk Highway 13 and Toronto Avenue in Prior Lake, Minnesota
(subject property). Crystal Care is considering purchasing the property and developing it
with senior housing. The purpose of this assessment was to identify Recognized
Environmental Conditions associated with the property according to the ASTM E 1527-
97 Standard Practice for Environmental Site Assessments: Phase I Environmental Site
Assessment Process.
The ASTM E 1527-97 Standard defines the term recognized environmental condition as
meaning the presence or likely presence of any hazardous substances or petroleum
products on a property under conditions that indicate an existing release, a past release, or
a material threat of a release of any hazardous substances or petroleum products into
structures on the property or into the ground, groundwater, or surface water of the
property. The term includes hazardous substances and petroleum products even under
conditions in compliance with laws. The term is npt intended to include de minimis
conditions that generally do not present a material risk of harm to public health or the
environment and that generally would not be subject to enforcement action if brought to
the attention of appropriate governmental agencies.
1.2 SPECIAL TERMS AND CONDITIONS
PEER provided a Proposal for a Phase I Environmental Site Assessment, dated June 13,
2000 to Mr. Mike Lewis of Crystal Care, LLC. The Proposal defines the Terms,
Conditions, and Scope of Services for this Phase I Environmental Site Assessment.
This report has been prepared exclusively for the use of Crystal Care, LLC. No
additional parties may rely on the contents of this report unless written authorization is
obtained from PEER.
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Phase I Environmental Site Assessment - PEER # 1 0 117
SE of State Highway 13 and Toronto A venue, Prior Lake, Minnesota
2
1.3 LIMITING CONDITIONS AND METHODOLOGY USED
This Phase I Environmental Site Assessment was performed in general accordance with
ASTM E 1527-97 Standard Practice for Environmental Site Assessments. No conditions
or exceptions to the Standard Practice were encountered that were deemed to be limiting
to the purpose of this assessment.
2.0 BACKGROUND INFORMATION
2.1 SITE LOCATION AND DESCRIPTION
The subject property is located southeast of the intersection of State Trunk Highway 13
and Toronto Avenue in Prior Lake, Minnesota. The location of the subject property is
shown on Figure 1. Crystal Care provided a site survey diagram which includes the
subject property and depicts the approximate property boundaries (see Appendix A).
The subject property is approximately 3.0 acres in size and is part of a larger 11.6 acre
parcel of land currently owned by HealthSystem Minnesota. The subject property
consists of undeveloped grass and tree covered land. Based on historical information (see
Section 3.2), the subject property has been used as agricultural land and as part of a drive-
in movie theater in the past
Surrounding property uses from adjoining to outlying include:
NORTH:
TJ's Tire and Towing, Veleshkie Auto Service and EZ Stop (gas station)
followed by Franklin Trail (County Road 39).
Residential townhouse development.
Vacant land owned by HealthSystem Minnesota followed by apartments
and residential housing.
Park Nicollet Health Care facility followed by Toronto Avenue.
EAST:
SOUTH:
WEST:
2.2 PROPOSED DEVELOPMENT
The proposed senior housing development will include a three-story slab-on-grade
apartment building. The exterior of the property will be occupied by landscaped areas
and bituminous paved parking and drive areas. Some detached parking garages may also
be constructed on the property exterior.
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Phase I Environmental Site Assessment - PEER # 1 0 117
SE of State Highway 13 and Toronto Avenue, Prior Lake, Minnesota
3
3.0 RECORDS REVIEW
3.1 SITE GEOLOGY
Site geology can influence the susceptibility to, and relative magnitude of environmental
impacts and liabilities associated with on-site and off-site sources of contamination. The
following maps and publications were used to estimate the physical characteristics of the
subject property:
. Geologic Atlas, Scott County, Minnesota, Minnesota Geological Survey, County
Atlas Series Map C-l, 1982.
. Prior Lake, Minnesota, 7.5 Minute Series Topographic Map, United States
Geological Survey, 1974 (revised 1993).
. Protected Waters and Wetlands Map, Scott County, Minnesota, Minnesota
Department of Natural Resources, Division of Waters, 1987.
The subject property is generally level with a surface elevation of approximately 960 feet
(:1:10 feet) above mean sea level. Surficial soils in the area consist of glacial calcareous
and shale-rich clayey till with many small inclusions of reddish-brown drift. The depth
to bedrock in the vicinity of the subject property is approximately 200 feet below ground
surface. Bedrock consists of sandy dolomite with thin beds of quartzose sandstone of the
Prairie Du Chien Group.
The water table below the subject property is estimated to occur at a depth of
approximately 10 to 15 feet below the ground surface. Regional ground water flow is
estimated to be northwesterly toward Prior Lake. It should be noted that the depth and
gradient of the water table could change seasonally in response to variation in
precipitation and recharge, and over time in response to urban development such as storm
water controls, impervious surfaces, and pumping wells.
Soil boring logs reviewed by PEER for subsurface investigations completed on adjacent
properties encountered up to 5 feet of fill material underlain by silty sand, sand and sandy
clay. Water table depths in the borings ranged from approximately 7 to 14 feet below the
ground surface, which is consistent with the published data.
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Phase I Environmental Site Assessment - PEER # 1 0 117
SE of State Highway 13 and Toronto Avenue, Prior Lake, Minnesota
4
The Protected Waters and Wetlands Map for Scott County depicts no protected waters or
wetlands on the subject property or adjoining properties.
3.2 PREVIOUS INVESTIGATIONS
PEER visited the Minnesota Pollution Control Agency (MPCA) to review State files for
the petroleum releases reported at TJ's Tire and Towing and the EZ Stop service station
sites. In the MPCA file for EZ Stop, PEER identified investigation data for the 11.6 acre
parcel (which includes the subject property) currently owned by HealthSystem
Minnesota. Information regarding TJ's Tire and Towing and EZ Stop is presented in
section 3.3.3. Details regarding the previous investigations which included the subject
property are discussed below.
Phase I Assessment
A TEC Associates, Inc. (A TEC) completed a Phase I Environmental Site Assessment in
November 1995 for HealthSystem Minnesota. The assessment covered the entire 11.6
acres of property currently owned by HealthSystem Minnesota, which the subject
property encompasses only a portion of. Results of the Phase I assessment are included
in the report: Phase I Environmental Site Assessment, Former Drive In Theater, Franklin
Trail Southeast, Prior Lake, Scott County, Minnesota, dated November 16, 1995. A copy
of the Executive Summary section of the report and a site plan are included in Appendix
B.
In summary, the Phase I assessment did not indicate any historical uses on the property
that are of environmental concern. However, the identified petroleum releases at TJ's
Tire and Towing and the EZ-Stop service station located immediately north of the
property were identified as potential concerns to the property. It was recommended that a
subsurface assessment be completed in order to evaluate if the property has been
impacted from these potential off-site sources of contamination.
- -- - ---- -- -- --------
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Phase I Environmental Site Assessment - PEER # 1 0 117
SE of State Highway 13 and Toronto A venue, Prior Lake, Minnesota
5
Subsurface Evaluation
A TEC subsequently completed a subsurface evaluation of the HealthSystem Minnesota
property to determine if it had been impacted by the adjacent petroleum release sites.
The subsurface evaluation consisted of advancing a total of nine sampling probes near the
boundaries of the adjacent petroleum release sites and in the vicinity of the proposed
HealthSystem building now located immediately west of the subject property. (Note:
none of the probes completed were located on the subject property). Soil and ground
water samples were analyzed on-site for the presence of gasoline range organics (GRO),
benzene, ethyl benzene toluene and xylenes (BETX). Results of the subsurface
evaluation are summarized in the report: Geoprobe Subsurface Investigation Report,
Former Drive-in Theater, Franklin Trail Southeast, Prior Lake, Scott County, Minnesota,
dated December 15, 1995. A copy of the report is included in Appendix B.
In summary, elevated concentrations of benzene and GRO were detected in one of the
sampling probes (GP-2) completed in the property access road adjacent to the EZ-Stop
site. The area is immediately north-northwest of the subject property. No elevated
contaminant concentrations were detected in any of the other soil or ground water
samples analyzed. A TEC concluded that the contaminants identified in GP-2 were from
the petroleum release at the adjacent EZ-Stop site and recommended that current and/or
future property owners obtain an "Off-site Source Determination" letter from the MPCA
Voluntary Petroleum Investigation and Cleanup (VPIC) Program for the detected
contamination.
HealthSystem Minnesota subsequently enrolled the property in the MPCA VPIC
program. An "Off-Site Petroleum Storage Tank Release Determination" letter dated
December 29, 1995 was issued by the MPCA for the contamination identified in the
property access road area. A copy of the MPCA letter is included in Appendix B.
3.3 HISTORICAL LAND USE INFORMATION
3.3.1 Historical Sources
PEER obtained and reviewed historical information from the following sources to
evaluate past and present land use activities at the subject property:
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Phase I Environmental Site Assessment - PEER # 1 0 117
SE of State Highway 13 and Toronto A venue, Prior Lake, Minnesota
6
SOURCE LOCATION
University of Minnesota - Borchert Map Library.
University of Minnesota -Borchert Map Library.
The ASTM Standard requires that all obvious uses of the property be identified back to the
property's first developed use or back to 1940, whichever is earlier. This task requires
reviewing only as many of the "Standard Sources" as are necessary, reasonably
ascertainable, and likely to be useful to meet the ASTM Standard. Historical information
concerning the property was available back to 1937 on aerial photographs. The subject
property was cultivated agricultural land in 1937. Based on aerial photographs and
interviews, the subject property has been only used as cultivated agricultural land, a drive-in
movie theater and vacant property. Although these are developed uses, based on the type of
uses (cultivated land and a drive-in theater) and the early date of available information for
this area, review of additional sources of information was deemed unlikely to be useful for
purposes of this assessment. Therefore, further research of historical records prior to 1937
was not conducted.
Details regarding the evaluation of the historical information are provided in Sections
3.2.2 through 3.2.3.
3.3.2 Aerial Photographs
PEER reviewed aerial photographs providil1g coverage of the subject property. The
following historical aerial photographs were examined:
YEAR
1937
1940
1951
1957
1964
1980
1990
1991
1997
IDENTIFICATION CODE
Scott County, WJ-3-87
Scott County, WJ-2A-79
Scott County, WJ-4H-90
Scott County, WJ-4T-36
Scott County, WJ-5EE-26
Metropolitan Council, M9West
Metropolitan Council, M9West
Scott County, 3142-65 Metropolitan Council, 93-08-664
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Phase I Environmental Site Assessment - PEER # I 0 117
SE of State Highway 13 and Toronto Avenue, Prior Lake, Minnesota
7
The following is a description of discernible features observed on the photographs.
Subject Property
The subject property appears to be cultivated agricultural land in the 1937 through 1957
aerial photographs. In the 1964 and 1980 photographs, the subject property appears to be
part of a larger property that is occupied by a drive-in movie theater. The subject
property is located on the eastern half of the drive-in theater. A portion of the subject
property was occupied by parking areas for the drive-in theater and an access road, while
the remainder appears to have been vacant and grass covered. On the 1990 through 1997
photographs, the drive-in movie theater is no longer evident and the subject property
appears to be vacant and covered with trees and vegetation. No environmental concerns
such as bulk chemical or petroleum storage, indications of dumping or significant cutting
and filling, or other uses of potential environmental concern are apparent on the subject
property in any of the photographs reviewed.
Surrounding Properties
The adjoining properties appear to be undeveloped or cultivated agricultural land in the
1937 through 1957 aerial photographs. The buildings for TJ's Tire and Towing, EZ Stop
and Velishak Auto are evident to the north and northwest of the subject property on the
1964 through 1997 photographs. The areas surrounding the Velishak Auto and TJ's Tire
and Towing buildings appear to be extensiv~ly used for storage of vehicles and other
associated materials on the 1980 through '1997 photographs. A fence is evident
surrounding TJ's Towing property on the 1997 photograph. A residential townhouse
development is located to the southeast of the subject property on the 1990 photograph,
while an apartment building is located to the south. Additional townhomes are evident
immediately east of the subject property on the 1997 photograph.
3.3.3 Historical Topographic Maps
Topographic maps produced by the United States Geological Survey (USGS) depict
cultural as well as natural surface features and elevation contours. The following USGS
topographic maps were examined:
. Prior Lake Quadrangle, Minnesota, 15 Minute Series, United States Geological
Survey, 1957.
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Phase I Environmental Site Assessment - PEER # 1 0 I 17
SE of State Highway 13 and Toronto Avenue, Prior Lake, Minnesota
8
. Prior Lake, Minnesota, 7.5 Minute Series Topographic Map, United States
Geological Survey, 1974 (revised 1993).
No environmentally suspect conditions such as land disturbances or other unexplained
features are depicted on the subject property or surrounding properties on either map.
3.4 STATE AND FEDERAL GOVERNMENT RECORDS SEARCH
3.4.1 Source
PEER utilizes a regulatory database search report supplied by VISTA Information
Solutions, Inc. (VISTA). A VISTA report was generated for the subject property on June
16,2000. This report was used to identify verified or potential hazardous substance and
petroleum release sites in the vicinity of the subject property. A copy of the report is
included in Appendix C. The Federal and State regulatory agency databases evaluated
and the approximate minimum search distances used are consistent with the requirements
of the ASTM E 1527-97 Standard Practice. The VISTA report includes descriptions of
the databases examined, and radius maps showing the approximate locations of many of
the listings identified.
3.4.2 Subject Property
The subject property was not identified in the VISTA report.
3.4.3 Surrounding Area
The MPCA evaluation identified five leaking underground storage tank (LUST) sites within
one-half mile of the subject property and two adjacent properties with registered
underground storage tanks (USTs). In addition, the VISTA report identified eight database
listings that are identified as "unmapped". Unmapped listings are sites for which VISTA
could not determine an exact location due to incomplete or inaccurate database information.
The eight listings appear to be located beyond the ASTM search distances for the database
on which they were identified (as determined by the limited location information provided).
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Phase I Environmental Site Assessment - PEER # 1 0 117
SE of State Highway 13 and Toronto A venue, Prior Lake, Minnesota
9
The following is a discussion of the identified sites.
LUST Sites
The five LUST sites identified within 0.5 mile of the subject property consist of the
following:
1. TJ's Tire and Towing, located immediately north of the subject property at 16675
Franklin Trail.
2. Crown E-Z Stop, located immediately northwest of the subject property at 16735
Franklin Trail SE.
3. Holiday Station Store #198, located approximately 0.25 miles west of the subject
property at 16800 Highway 13 or Duluth Ave. SE.
4. Scott/Rice Telephone Co., located approximately 0.4 miles north of the subject
property at 4690 Colorado Street.
5. Prior Lake Amoco, located approximately 0.4 miles north of the subject property at
1621 0 Walker Street SE.
Sites 3, 4, and 5 are located at or greater than 0.25 mile from the subject property and are
located downgradient or side-gradient of the subject property with respect to the
estimated northwesterly direction of shallow ground water flow. Sites 1, 3,4, and 5 are
also identified as "closed" by the MPCA. LUST sites that are listed as "closed,"
generally indicate that adequate investigation and/or cleanup at the site has been
completed, and that the MPCA has issued a letter of closure requiring no additional
investigation and/or cleanup work at that time or in the foreseeable future. Based on their
closed status, distances from the subject property, and locations with respect to the
estimated northwesterly direction of ground water flow, sites # 3, 4 and 5 appear to have
a low potential to impact the subject property.
Sites 1 and 2 are located on adjoining properties. Site 1 (TJ's Tire and Towing) has been
assigned a "closed" status. Site 2 (EZ-Stop) is listed as an active LUST site. Based on
their proximity to the subject property there is a potential for impacts to the subject
property from the petroleum releases at these sites. PEER completed a review of the
MPCA files for each site in order to determine the magnitude and extent of the petroleum
releases and to assess the potential for petroleum impacts to the subject property. The
following is a brief discussion of each site.
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Phase I Environmental Site Assessment - PEER # 1 0 117
SE of State Highway 13 and Toronto Avenue, Prior Lake, Minnesota
10
TJ's Towing - Leak #5428
Two 1,000 gasoline USTs were removed from the site in July 1992. A petroleum release
was reported on July 20, 1992. Observations made during completion of the UST
removals indicate that petroleum impacts were encountered below each UST, at a depth
just below the water table. Contamination appeared to be concentrated in the northern
portion of each UST basin.
A subsurface investigation was subsequently completed. The investigation consisted of
advancing 7 hydraulically driven sampling probes and 2 manual hand auger borings to
depths of approximately 9 feet below the ground surface. Soil samples were collected
from four of the sample probes at the approximate depth of the water table (7 to 9 feet).
In addition, one ground water sample was collected. No elevated contaminant
concentrations were detected in any of the soil samples or in the ground water sample.
The MPCA granted the site file closure in a letter dated September 7, 1993. A copy of
the MPCA closure letter and relevant investigation data for the site is included in
Appendix D.
EZ Stop - Leak # 180
An unknown amount of gasoline was apparently released from a UST at the site in M~rch
1986. A release was reported on April 3, 1986. A subsurface investigation was
subsequently completed that included advanc~ment of 15 soil borings and installation of
4 ground water monitoring wells. Contaminated ground water was detected across the
site and free-phase petroleum product was also observed at several locations. Ground
water contamination appears to extend to the east, north and northwest of the EZ Stop
site.
A ground water recovery system was installed at the site to remove the free-phase
product and treat contaminated ground water. A total of approximately 2,445 gallons of
free product had been recovered from the subsurface as of August 1998. Free product
was apparently not observed in the site wells during 1999 due to a low water table
elevation throughout the year.
Data from site investigation and monitoring indicate that shallow ground water at the site
flows toward the north to northwest, towards Prior Lake. Copies of relevant investigation
data for the site is included in Appendix E.
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Phase I Environmental Site Assessment - PEER #10117
SE of State Highway 13 and Toronto A venue, Prior Lake, Minnesota
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UST Sites
Two adjoining properties were identified as having USTs; the EZ Stop site and TJ's Tire
and Towing. EZ Stop is identified as having a total of four active petroleum USTs on
site. TJ's towing was identified in the VISTA report as having two registered USTs
previously removed. However, correspondence included in the MPCA site file reviewed
by PEER indicates that a third UST containing waste oil may still be present on the
property.
3.5 SCOTT COUNTY RECORDS REVIEW
PEER requested that Scott County complete a review of their environmental files to
determine if there have been any past concerns associated with the subject property or
surrounding properties. The County provided the requested information in a letter report
dated June 24, 2000. A copy ofthe letter is provided in Appendix F.
Scott County did not identify any specific violations or environmental concerns
associated with the subject property.
LUST Sites
Four open LUST sites were identified by Scott County. The identified sites are as
follows:
1. County Road 21 Right of Way, located approximately 0.7 miles northwest of the
subject property.
2. Crown E-Z Stop, located immediately northwest of the subject property at 16735
Franklin Trail SE.
3. Prior Lake Police Annex, located approximately 0.6 miles north of the subject
property on Dakota Street.
4. City of Prior Lake, located approximately 0.5 miles north of the subject property at
16200 Eagle Creek Avenue SE.
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Phase I Environmental Site Assessment - PEER # I 0 117
SE of State Highway 13 and Toronto Avenue, Prior Lake, Minnesota
12
All four of these LUST sites are located downgradient of the subject property with
respect to the estimated direction of shallow ground water flow. In addition, based on the
distance of sites #1,3 and 4 from the subject property, they appear to have a low potential
to impact the subject property. Based on the information presented in Section 3.3.2, the
petroleum release at the EZ Stop also appears to have a low potential to impact the
subject property.
Scott County identified five additional LUST sites that have received file closure status
from the MPCA. The sites include the following:
1. Grainwood Elementary School, located at 5061 Minnesota Street SE.
2. Holiday Station Store #198, located at Duluth Ave. SE
3. Prior Lake Amoco, located at 4805 Dakota Street.
4. Scott Rice Telephone Company, located at 4690 Colorado Street SE
5. TJ's Tire and Towing, located at 16675 Franklin Trail SE.
Sites #2 through 5 were also identified on the MPCA VISTA report and discussed in
Section 3.3.3. Sites #1 through #4 appear to have a low potential to negatively impact
the subject property based on their distance from the subject property and/or their closed
regulatory status. Based on the information presented in Section 3.3.2, the petroleum
release at the TJ's Tire and Towing site also appears to have a low potential to impact the
subject property.
Dump Site
The County's letter identified a dump located north of Dakota Street Southeast and west
of Main Avenue Southeast approximately 0.6 miles north of the subject property. The
dump was closed in the mid 1980's. No evidence of ground water contamination has
been reported in association with the dump site. Based on its distance and location with
respect to the subject property, impacts to the subject property from this dump site are not
anticipated.
Hazardous Waste Generators
Scott County provided a list of licensed hazardous waste generators within Scott County.
Four hazardous waste generators located adjacent to the subject property were identified
on the list. The sites are as follows:
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Phase I Environmental Site Assessment - PEER # 10117
SE of State Highway 13 and Toronto Avenue, Prior Lake, Minnesota
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1. HSM Park Nicollet Clinic Prior Lake, located immediately west of the subject
property at 16705 Franklin Trail SE.
2. Park Dental Prior Lake, located immediately west of the subject property at 16705
Franklin Trail SE.
3. TJ's Tire and Towing, located immediately north of the subject property at 16675
Franklin Trail SE.
4. Velishek Auto Sales, located immediately northwest of the subject property at 16661
Highway 13 South.
With the exception ofTJ's Tire and Towing being identified as a LUST site, none of the
sites were identified by the County on any other Cleanup Lists or any other lists which
would indicate that violations or releases have occurred in association with them.
4.0 INTERVIEWS
4.1 PROPERTY OWNER
PEER contacted Mr. Dean Williamson, a representative of the property owner, by
telephone on July 12, 2000. Mr. Williamson indicated that the property was purchased
by HealthSystems Minnesota in 1995 and that the building on the property adjacent to the
subject property was constructed in 1997-98. The subject property has apparently not
been utilized by HealthSystems Minnesota, but has been left vacant. He was not aware of
any existing or former underground storage tanks (USTs), dumps, leaks, spills or
additional potential environmental concerns on the subject property.
4.2 CITY OF PRIOR LAKE FIRE MARSHAL
PEER contacted the Prior Lake Fire Marshal, Mr. Bruce Sames, by telephone on July 14,
2000. Mr. Sames indicated that he was not aware of any past releases or storage of
hazardous substances or petroleum products at the property. He also indicated that the
property has been vacant for at least the last 10 years.
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Phase I Environmental Site Assessment - PEER #10117
SE of State Highway 13 and Toronto A venue, Prior Lake, Minnesota
14
5.0 SITE RECONNAISSANCE
5.1 GENERAL
Ms. Kristin Walch of PEER performed on-site observations of the subject property on
June 23, 2000. PEER conducted observations of the subject property by walking the
perimeter and traversing through the approximate center of the subject property from
south to north. No access limitations were encountered. Dense vegetation cover limited
direct observations of the ground surface throughout much of the property.
5.2 SUBJECT PROPERTY
As discussed in Section 2.0, the subject property is approximately 3.0 acres of vacant
grass and tree covered land. No buildings or structures are present on the property. A
paved access road is present along the northwestern property boundary.
Surficial debris was noted in three obvious areas of the subject property. Debris Areas 1
and 2 were located on the northern portion of the property, immediately south of TJ's
Tire and Towing property. Debris Area 3 was located on the central portion of the
property. No evidence of significant amounts of buried debris (e.g. hummock ground
surface or material partially buried or protruding from the ground) were noted in the
debris areas.
Debris Area 1 is situated next to the wooden fence for the TJ's Tire and Towing property.
The observed items in this area included: a red sealed steel drum (which was unlabeled
and apparently had residual liquid contents of unknown composition), an empty parts
washer, a bathroom sink, a shovel, some miscellaneous car parts, an empty 5-gallon
bucket labeled as "High Performance Pavement Sealer", a tire, several concrete blocks,
and old carpet (which had pooled oil on it). In addition, a pathway was observed leading
up to this area from the south. The ground surface of the pathway was covered with oil
soaked sorbant material (i.e. "Floor Dry").
Debris Area 2 was located to the south of Debris Area 1. Items observed in this area
included an empty 5-gallon bucket of pavement sealer, tires, metal pipes, wire, glass jars
and a car battery. A mound of excavated surficial soil was also observed.
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Phase I Environmental Site Assessment - PEER # 1 0 117
SE of State Highway 13 and Toronto Avenue, Prior Lake, Minnesota
15
Debris Area 3, in the central portion of the subject property, was located within what
appeared to be a recently excavated depression of approximately 5 feet by 7 feet in size.
The items observed in this area included two empty rusted steel drums, an old empty
parts washer and an old LP gas tank of approximately 40 gallons in size.
Small amounts of discarded debris was observed at several other locations on the
property and included items such as tires, rusted metal, and an empty rusty drum. Due to
the presence of dense vegetation which obscured direct observations of the ground
surface at all locations, there is a potential that debris other than that observed during the
site reconnaissance and noted in this report could be present on the subject property.
No wells, pits, septic systems, wastewater ponds or lagoons were observed on the subject
property .
5.3 HAZARDOUS SUBSTANCES AND PETROLEUM PRODUCTS
With the exception of possible residual unknown products remaining in the discarded
containers and oil staining observed on the surface as described in section 5.2, no
evidence of hazardous substances or petroleum products were observed on the subject
property .
5.4 CHEMICAL OR PETROLEUM STORAGE TANKS
No aboveground storage tanks were observed on the subject property. No evidence of
underground storage tanks was observed on the subject property.
5.5 ADJOINING PROPERTIES
Adjoining properties are described in Section 2.0. Observations of adjoining properties
were limited to those made from the subject property and public thoroughfares.
A tall wooden fence was observed separating the subject property and TJ's Tire and
Towing property located to the north. It was evident that the majority of TJ's Tire and
Towing property is used for storage of various vehicles and equipment. The presence of
the fence obstructed observations of the property.
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Phase I Environmental Site Assessment - PEER # 1 0 117
SE of State Highway 13 and Toronto Avenue, Prior Lake, Minnesota
16
Adjacent properties to the east of the subject property consisted of residential
townhomes. The adjacent property to the south consists of vacant vegetated land owned
by HealthSystem Minnesota followed by apartments and residential housing. The
property immediately to the west of the subject property is occupied by a health care
facility with associated parking area and driveway.
The property located northwest of the subject property is occupied by Velishak Auto and
EZ Stop service station. Numerous vehicles were observed to be parked around the
Velishak auto site. The building was observed to have three auto service stalls and
various automotive equipment located both inside and outside of the building.
Numerous monitoring wells were apparent at the EZ Stop site. In addition, what
appeared to be a remediation system shed was also observed on the southern portion or'
that site. An AST surrounded by a fence was observed adjacent to the shed.
6.0 FINDINGS AND CONCLUSIONS
6.1 GENERAL
The ASTM E 1527-97 Standard defines a recognized environmental condition as the
presence or likely presence of any hazardous substances or petroleum products on a
property under conditions that indicate an existing release, a past release, or a material
threat of a release of any hazardous substances or petroleum products into structures on
the property or into the ground, groundwater, or surface water of the property. The term
includes conditions even in compliance with laws.
PEER has performed a Phase I Environmental Site Assessment in conformance with the
scope and limitations of ASTM Practice E 1527-97 of the subject property as described in
Section 2.0. Any exceptions to or deletions from this practice are described in this report.
This assessment has revealed no evidence of recognized environmental conditions in
connection with the subject property except for those listed in Section 6.2.
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Phase I Environmental Site Assessment - PEER # 1 0 117
SE of State Highway 13 and Toronto A venue, Prior Lake, Minnesota
17
6.2 RECOGNIZED ENVIRONMENTAL CONDITIONS
6.2.1 On-Site Recognized Environmental Conditions
Surficial debris was noted in three obvious areas of the subject property. Debris Areas 1
and 2 were located on the northern portion of the property, immediately south of TJ's
Tire and Towing property. Debris Area 3 was located on the central portion of the
property. No evidence of significant amounts of buried debris (e.g. hummock ground
surface or material partially buried or protruding from the ground) were noted in the
debris areas.
Debris Area 1 contained a sealed steel red drum apparently containing an unknown
volume of an unknown liquid, an old empty parts washer, a bathroom sink, a shovel,
some miscellaneous car parts, an empty 5-gallon bucket labeled as "High Performance
Pavement Sealer", a tire, several concrete blocks, and old carpet (with pooled oil on it).
The ground surface of the pathway leading to this area was covered with oil soaked
sorbant material (i.e. "Floor Dry"). Debris Area 2 contained an empty 5-gallon bucket of
pavement sealer, tires, metal pipes, wire, glass jars and a car battery. Debris Area 3 was
located in what appeared to be a recently excavated depression of approximately 5 feet by
7 feet in size and contained two empty rusted steel drums, an old empty parts washer and
an old LP gas tank of approximately 40 gallons in size.
Small amounts of discarded debris was ol;>served at several other locations on the
property and included items such as tires, rusted metal, and an empty rusty drum. Due
the presence of dense vegetation which obscured direct observations of the ground
surface at all locations, there is a potential that other debris than observed during the site
reconnaissance and noted in this report could be present on the subject property.
Materials located in Debris Areas 1 and 2 (i.e. the drum of unknown contents, parts
washer, oil stained carpet and oil soaked sorbant material in Area 1 and the roofing
material and car battery in Area 2) appear to contain or have previously contained
petroleum products and potential hazardous substances such as solvents. Although no
evidence of a specific release was observed in these areas (with the possible exception of
the oil soaked sorbant material observed on the ground surface in Area 1), this potential
for a release represents a recognized environmental condition. Limited Phase II
investigation in Debris Areas 1 and 2 appears warranted to confirm that no significant
releases of petroleum products or hazardous substances have occurred in these areas.
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Phase I Environmental Site Assessment - PEER # 10117
SE of State Highway 13 and Toronto Avenue, Prior Lake, Minnesota
18
The identified debris should be properly characterized and removed from the property
prior to its development. Because the various materials may contain residual product or
may be contaminated with petroleum products or other hazardous substances, some of
these materials will require special handling and disposal procedures.
6.2.2 Off-Site Recognized Environmental Conditions
Petroleum releases have been identified on the adjoining TJ's Tire and Towing and EZ
Stop sites located to north and northwest of the subject property, respectively. Due to the
proximity, the petroleum releases at these sites have the potential to impact the subject
property. However based on review of available MPCA technical files, the potential for
soil and/or groundwater impacts to the subject property from these petroleum releases
appears low.
7.0 GENERAL REMARKS
7.1 STANDARD OF CARE
The services performed by Peer Environmental & Engineering Resources, Inc. have been
conducted with that level of care and skill ordinarily exercised by reputable members of
the profession, practicing in the same locality under similar budget and time constraints.
No other warranty is made or intended.
7.2 SUMMARY OF QUALIFICATIONS
A summary of corporate and individual qualifications for PEER and the individuals
associated with this project is included in Appendix G.
Prepared by:
Peer Environmental & Engineering Resources, Inc.
Kristin J. Walch, P.G.
Environmental Geologist
Step.qen T. Jansen, PO, M.S.
Vice President
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SCALE IN FEET
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MAP LOCATION
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TAKEN FROM:
PRIOR LAKE, MN
7.5 MINUTE SERIES
TOPOGRAPHIC MAP
1974 (REVISED 1993)
UNITED STATES GEOLOGICAL SURVEY
.,
SITE LOCATION MAP
JULY 2000
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IE:\10000\10100\10117 Sit. location Color T<<raln.CA.D 17/13/00
PROJECT #: 10117.00
VACANT LAND
SOUTHEAST OF HIGHWAY 13 AND TORONTO AVENUE
PRIOR LAKE, MINNESOTA
FIGURE
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EXHIBIT B
of
Real Estate Purchase Agreement
By and Between
Crystal Care, LLC and/or assigns, as Buyer, and
HealthSystem Minnesota, as Seller
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Phase I Environmental Site Assessment
Former Drive In Theater
Franklin Trail Southeast
~rior Lake, Scott County, Minnesota
ATEC Project No. 55-07-95-00151
Prepared For:
Mr. John Herman
HealthSystem Minnesota
5800 Excelsior Boulevard
S1. Louis Park, MN 55116
November 17, 1995
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EXECUTIVE SUMMARY
ATEC Associates, Inc. (A.TEC) was retained by HealthSystem Minnesota to conduct
a Phase I Environmental Site Assessment (ESA) of the property located on Franklin
Trail Southeast, Prior Lake, Scott County, Minnesota (Site). On November 7, 1995,
A.TEC visited the Site to visually identify potential environmental concerns. A.TEC also
reviewed local records and a commercial regulatory database report during this study
to determine the land-use history of the Site and to ascertain whether such land-use
involved the use, storage or disposal of hazardous materials. The Site consists of a
vacant 11.64 acre parcel of land which was formerly utilized as a drive in movie
theater.
The findings of this assessment indicate that there are two leaking underground storage
tank facilities located adjacent to the Site. Concerns represented by these sites are
described as follows:
. The first facility, TJ's Towing and Tire, has been granted file closure by
the Minnesota Pollution Control Agency (MPCA). TJ's is located
up gradient from the Site, with respect to groundwater. As such,
petroleum from this facility. may have migrated onto the Site.
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The second facility, the EZ-Stop gas station/convenience store, has not
been granted file closure by the MPCA. The petroleum leak at this
facility has contaminated groundwater and active remediation is ongoing
at this facility. This facility is located downgradient to the Site with
respect to groundwater. However, due to the close proximity of detected
free phase petroleum product to the Site, contaminants from this facility
could have impaired the Site.
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According to the Geologic Atlas of Scott County (1982), bedrock in the area of the Site
is comprised of the Prairie Du Chien Group which is located at a depth of
approximately 210 feet below land surface (BLS). Sediments overlying the bedrock are
sand and gravel glacial till or outwash deposits.
Eleven soil borings were conducted on-site by Professional Engineering Consultants,
Inc. (PEC) on November 9 and 10, 1995. ATEC reviewed PEC's Subsurface
Exploration report dated November 14, 1995. A copy of this report is included under
separate cover. Sediment excavated in the drilling operations consisted of fill to a
maximum depth of three feet BLS. The fill is reported to be underlain by various
deposits of fine to coarse grained alluvium. The lithology of the sediments generally
ranged from sand to clay. No evidence of contaminants were observed in the sediments
discussed in the Subsurface Exploration Report. Please refer to the Subsurface
Exploration Report for specific details pertaining to encountered subsurface sediment
at the Site.
Regional groundwater is expected to be located at a depth of between ten to twenty
feet BLS at the Site as evidenced by the Subsurface Exploration Report. Groundwater
is expected to flow from the southeast to the northwest (upgradient to downgradient
respectively) towards the Minnesota' River according to published hydrologic
information.
The actual surficial groundwater flow direction in the vicinity of the Site can be
influenced by factors such as pond "storage, underground structures, seasonal
fluctuations, soil and bedrock geology, and production wells, none of which were
considered during this study.
2.2
Storage Tanks
Visual evidence (i.e., pipes, vents, pumps, stains, concrete foundations or containment
walls, pedestals, or steel support structures) indicating past or present aboveground
6
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MN
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SITE VICINITY AND TOPOGRAPIDC MAP
Former Drive-in Theater
Franklin Trail Southeast
Prior Lake, Minnesota
# 55-07-95-00160
Scale: 1:24000
Pi ure: 1
ATEC
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Franklin Trail SE
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EZ 0 T J's Tire
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Residential Apartments
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SITE PLAN #55-07-95-00151
Fonner Drive In Theater Scale: Not to scale ATEC'
Franklin Trail Southeast
Prior Lake, Minnesota Figure: 2
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Associates, Inc.
1479 Energy Park Drive
SI. Paul, Minnesota 55108
(612) 645-9520, FAX (612) 645-9529
December 15, 1995
Mr. John Herman
HealthSystem Minnesota
5800 Excelsior Boulevard
St. Louis Park, MN 55116
Subject:
Geoprobe Subsurface Evaluation Report
Former Drive-in Theater
Franklin Trail Southeast
Prior Lake, Scott County, Minnesota
A TEC Project #55-07-95-00160
Dear Mr. Herman:
In accordance with A TEC Associates, Inc. (A TEC) proposal dated November 30, 1995, A TEC
has completed a Geoprobe Subsurface Evaluation at the referenced property (Site). This report
summarizes our findings.
Nine Geoprobes were advanced at the Site. Select soil and groundwater samples were analyzed
on Site for total petroleum hydrocarbons (TPH) as gasoline range organics (GRO), benzene,
ethyl benzene, toluene and total xylenes. With the exception of the groundwater sample
collected from advanced Geoprobe GP-2, thy analyzed parameters were not detected above
laboratory method detection limits. Benzene and GRO were detected at concentrations of 15 and
351 micrograms per Liter in the GP-2 groundwater sample.
ATEC's Phase I Environmental Site Assessment (ESA) dated November 17, 1995, did not
encounter any historical, regulatory or other information, and A TEC did not observe any
features during its site reconnaissance, which would suggest that the detected benzene
contamination is a result of historical or current land-use activities on the Site. The ESA,
however, revealed that the EZ Stop Service Station, located west and adjacent to the Site access
road, is a petroleum storage tank release Site (Minnesota Pollution Control Agency site 10
#LEAKOOOOOI80). Free phase petroleum hydrocarbons have been reported to be located at EZ
Stop within approximately 30 feet of the Site access road. A TEC concludes that the detected
dissolved benzene and TPH as GRO contamination in the groundwater sample collected from
GP-2 is a result of the nearby free phase petroleum hydrocarbons released on the EZ Stop
property.
This conclusion is premised on the following factors: the limited extent of petroleum detected
on the Site (only one sample beneath the access road immediately adjacent to the EZ Stop
service station), the absence of any historical or regulatory evidence or sampling data indicating
that there could be an on-Site source of the detected petroleum, the data submitted to MPCA
indicating that the nearby TJ Tire petroleum release did not migrate across property boundaries,
American Testing and Engineering Corporation
Offices in Major U.S. Cities/Since 1958
Consulting Environrne'~r~~f
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,
and the magnitude and extent of the EZ Stop release. Given the amount of the free phase
petroleum reported at EZ Stop, it is likely that the release at that facility has resulted in a
contaminant plume not only migrating to the northwest due to the direction of the shallow
groundwater flow, but also to the south and east in the immediate vicinity of the release area.
Because of the Site's close proximity to EZ Stop, the Site access road apparently has been
impacted by this limited southeast migration.
Additional subsurface investigation activities of the Site do not appear warranted. It is A TEC's
recommendation that current and/or future property owners of the Site obtain an Off-site Source
Determination Letter from the MPCA Voluntary Petroleum Investigation and Cleanup program
for the detected contamination.
We appreciate the opportunity to provide you with these services. If you should have any
questions or comments regarding this report, please feel free to contact us at 645-9520.
Sincerely,
American Testing and Engineering Corporation
dba A TEC Associates, Inc.
~ <,...;/"
.,./ ~1?~
~i G,. '/:.<~.'
Rod [~hn
Project Manager
~-j
.6~/ p; c?~
~id A. Tetley
Senior Project Manager
pc: Mr. Dean Williamson, Frauenshuh Companies
Mr. Greg Fontaine, Dorsey & Whitney
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Geoprobe Subsurface Evaluation Report
Fonner Drive-in Theater
Franklin Trail Southeast
Prior Lake, Scott County, Minnesota
A TEC Project # 55-07-95-00160
1.0 INTRODUCTION
The purpose of this report is to summarize the results of work performed at the referenced Site
in accordance with ATEC Associates, Inc. (ATEC) proposal 55-763, dated November 30, 1995.
This proposal was approved on December 1, 1995. Please refer to the Site Vicinity and
Topographic Map, Figure 1 for the location of the Site.
2.0 BACKGROUND
The Phase I Environmental Site Assessment (ESA) report by A TEC, dated November 17, 1995,
revealed two leaking underground storage tank (LUST) facilities adjacent to the Site. A TEC
recommended a subsurface assessment to evaluate the potential of soil and/or groundwater
impacts from current and historic off-site sources of potential subsurface contamination to the
Site.
A TEC reviewed available documents at the Minnesota Pollution Control Agency (MPCA) for
two adjacent LUST facilities: TJ's Tire (MPCA site ID # Leak00005428) and EZ Stop Gasoline
Station and Convenience Store (MPCA site ID # LEAK00000180).
TJ's Tire, located east and adjacent to the Site access road, had a gasoline release identified
during the removal of two 1,000-gallon USTs in July 1992. According to reports submitted to
MPCA, soil and groundwater were apparently impacted with petroleum hydrocarbons from the
TJ's Tire release. Additional investigation involving seven soil probes, hand auguring and an
additional round of groundwater sampling was performed to define the extent of the petroleum
release. The soil and groundwater samples collected did not detect petroleum hydrocarbons at
concentrations above laboratory method detection limits. The MPCA granted facility closure
in September 1993.
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EZ Stop, located west and adjacent to the Site access road, discovered a leaking UST, which
contained unleaded gasoline, during a routine tank tightness test in March 1986. According to
records on file with MPCA, an approximately 90-gallon spill of unleaded gasoline occurred in
August 1988. Two recovery wells were installed to pump free phase petroleum
hydrocarbons/water from the aquifer. Two recovery trenches were excavated by EZ Stop to
hydraulically connect the recovery wells to the tank basin, the station backfill, and the sanitary
sewer backfill. In June 1994, free phase petroleum hydrocarbons identified as gasoline were
measured in a monitoring well located at the northeast portion of the EZ Stop facility and within
30 feet of the Site access road. An additional monitoring well was installed on the EZ Stop
property, near the access road of the subject Site. Free phase petroleum hydrocarbons were
measured in the installed monitoring well. Less than 20 gallons of free phase product was
passively collected from two monitoring wells located at the northeast portion EZ Stop from
August 1994 to December 1994. An additional groundwater recovery well in the location of the
newly discovered free product was recommended by EZ Stop's consultant. The MPCA in April
1995 agreed with the recommendation for installing an additional recovery well at the EZ Stop
facility. The July 1995 MPCA Monitoring Worksheets fot EZ Stop indicate a total of 2,176-
gallons of free product collected to date. EZ Stop's consultant indicated to the MPCA that a
third recovery well located on the EZ Stop property near the Site access road would be installed
by September 1995.
3.0 PROJECT RESULTS
The Geoprobe subsurface evaluation was conducted on December 5 and 6, 1995, to evaluate the
potential for on-Site contamination as a result of the adjacent LUST facilities as well as possible
on-Site release sources in the vicinity of the new building proposed for the Site. Mobile
Environmental Sampling & Analysis, Inc. (MESA) was the Geoprobe subcontractor to A TEe.
A Geoprobe sampling unit was used to drive nine probes (test holes) at selected locations (see
Figure 2).
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3.1 Methods and Procedures
The probes consisted of hydraulically pushing or hammering one-inch outside diameter stainless
steel rods to the desired test depth. At the test depth, soil or groundwater samples were
collected. Following removal of the probe rods, the holes were filled with high solids bentonite
grout to the ground surface.
Soil and groundwater sample collection procedures are outlined in the MESA report in Appendix
A.
Soil and groundwater samples were analyzed on Site by MESA for total petroleum hydrocarbons
as gasoline range organics (GRO) and benzene, ethyl benzene, toluene, and total xylenes
(BETX) using a SRI Instrument Model 8610 Gas Chromatograph.
3.2 Probe Locations
Probe locations were based in part on information reviewed at the MPCA covering the EZ Stop
and TJ's Tire LUST sites and the proximity of auto~obile related businesses located adjacent
to the west and north boundaries of the Site. Also, a draft Site map provided to A TEC by
Frauenshuh indicates a 10,000 to 15,000 square foot building is proposed for the northwest
corner of the Site. GP-6, GP-8 and GP-9 specifically evaluated this proposed building area for
off-Site or on-Site release source areas. The remaining probe locations focused on the potential
off-site sources, the two LUST sites and the automobile related businesses (see Figure 2).
3.3 Soil Conditions
Soil boring logs were generated for GP-6, GP-8 and GP-9. Soil sample cores were collected
at depths of 5-7, 10-12 and 15-17 feet below land surface (BLS) (see Appendix B). Fill soil was
encountered to a depth of 5 feet BLS. The fill soil consisted of silty sand. The underlying
native soil consisted of alternating sequences of fine grained sand and silt with fine grained sand
laminations to a depth of at least 17 feet BLS. Soil discoloration was not observed in the
sampled probe locations.
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4.0 CONCLUSIONS
A TEC evaluated the potential for soil and groundwater contamination from current and historical
known and potential off-Site sources of subsurface contamination. Although no potential on-Site
source of contamination was identified during the performance of the Phase I ESA, the Phase
II investigation also served to evaluate whether there could be on-Site petroleum release sources.
The only potential sources of contamination identified were the two known LUST facilities
adjacent to the Site (EZ Stop and TJ's Tire) and the automobile related businesses located
adjacent to the site to the north and west.
Soil samples were collected from both GP-6 and GP-8, which exhibited PIO readings of 1.5 and
1.2 ppm, respectively. These samples were submitted for chemical analysis of GRO and BETX.
None of the analyzed parameters were detected above laboratory method detection limits in
either of these samples.
With the exception of the groundwater sample collected from GP-2, the samples collected from
GP-I, GP-(3-5), GP-7, and GP-9 did not contain analyzed parameters above laboratory method
detection limits. Benzene and GRO were detected at concentrations of 15 and 351 micrograms
per Liter in the GP-2groundwatersample. No free phase petroleum hydrocarbons were detected
during subsurface work conducted by A TEC.
5.0 DISCUSSION/RECOMMENDATIONS
A TEC concludes that dissolved benzene and GRO detected in the groundwater sample collected
from GP-2 on-Site is a result of the nearby free phase petroleum hydrocarbons released at EZ
Stop. This conclusion is premised on the following factors: the limited extent of petroleum
detected on the Site (only one sample beneath the access road immediately adjacent to the EZ
Stop service station), the absence of any historical or regulatory evidence or sampling data
indicating that there could be an on-Site source of the detected petroleum, the data submitted to
MPCA indicating that the TJ's Tire petroleum release did not migrate across property
boundaries, and the magnitude and extent of the EZ Stop release. Given the amount of the free
5
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phase petroleum reported at EZ Stop, it is likely that the release at that facility has resulted in
a contaminant plume not only migrating to the northwest due to the direction of the shallow
groundwater flow, but had also spread to the south and east in the immediate vicinity of the
release area. Because of the Site's close proximity to EZ Stop, the Site access road apparently
has been impacted by this limited southeast migration.
6.0 QUALIFICA TIONS
Our professional services have been performed, our findings obtained, and our recommendations
prepared in accordance with customary principles and practices in the fields of environmental
science and engineering. This statement is in lieu of all other statements either expressed or
implied. This company is not responsible for the independent conclusions, opinions, or
recommendations made by others based on the field exploration and laboratory test data
presented in this report.
6
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ATEC ASSOCIATES, Inc.
Health Systems Minnesota Site
Project No. 95144
December 9, 1995
Page 3
2.3. Chemical Analysis
The groundwater samples were analyzed in general accordance with EP A Method 8020 for
Aromatic Volatile Organic Compounds and the Wisconsin DNR Modified GRO Method.
A SRI Instruments Model 8610 Gas Chromatograph equipped with an EP A style purge and
trap sample concentrator was used to perform the analyses. A ten component GRO
standard including methyl tertiary butyl ether, benzene, toluene, ethylbenzene, meta-xylene,
para-xylene, ortho-xylene, 1,3,5-trimethylbenzene, 1,2,4-trimethylbenzene and naphthalene
was analyzed at a range of concentrations to generate response factors for each analyte.
3.0 Results
3.1 Groundwater and Soil Sample Analysis
Table 1 presents a summary of the sample analytical results.
Table 1
Sample Analysis Results
Health Systems Minnesota
Prior Lake, Minnesota
,
Probe Benzene Toluene Ethyl Xylenes GRO
Location Benzene
GP-1 GW 13.6' <4.0 <4.0 <4.0 <4.0 <100
GP-2 GW 13.8' 15 <4.0 <4.0 <4.0 351
GP-3 GW 12.9' <4.0 <4.0 <4.0 <4.0 <100
GP-4 GW 12.2' <4.0 <4.0 <4.0 <4.0 <100
GP-5 GW 11.8' <4.0 <4.0 <4.0 <4.0 <100
GP-6 Soil 15'-17' <500 <500 <500 <500 <5,000
GP-7 GW 12.3' <4.0 <4.0 <4.0 <4.0 <100
GP-8 Soil 5'-7' <500 <500 <500 <500 <5,000
GP-9 GW 11.8' <4.0 <4.0 <4.0 <4.0 <100
Notes: The soil analytical results are presented on a wet weight basis in ugIL or parts per billion.
The groundwater analytical results are presented in ugIL or parts per billion.
< = Parameter not detected at or above the indicated detection limit.
GRO = Gasoline range organics
3.2. Probe Locations
Upon completion of the subsurface contaminant survey, the probe locations were measured
by ATEC for addition to the site map.
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AlEC AssociaTe~ Inc.
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PROJECT NAME Former Drive-in TheaTer
PROJECT LOCATION Pr i or Lake M i nnesaTa
DRILLING MTHD Geaprabe
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DATE STARTED 12-05-95
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NO = NON-DETECTABLE
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PIO = PHOTO-IONIZATION DETECTOR
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BORING LOG
BORING NO: GP-8
PROJECT NO: 55-07-95-00150
CLIENT HealTh SYSTem MinnesoTa
DRILLING CONTRACTOR MES A.
SAMPLE MTHD AceToTe LIner
DATE FINISHED 12-05-95
DRILLER Dove Russe I I
INSPECTOR David DavIS
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SURFACE ELEVATION
LITHOLOGIC
DESCRIPTION
FILL Fi II, si Ity sand/clay mixed, brawn,
mOIS~ Z' frost
.
SAND Native, san~ fine to medium 9rarne~
light brawn, ma i st
SIL T Sri t, gray, wet to waterbear r ng.
laminations and lenses of fine grained
sand
End of Sarong
REMARKS
.
Sample 50i I for GRO and BETX
\
WaTer Level at 10 O'
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Minnesota Pollution Control Agency
December 29, 1995
Mr. John Herman
HealthSystem Minnesota
3800 Park Nicollet Boulevard
Minneapolis, Minnesota 55416
RE: Off-Site Petroleum Storage Tank Release Determination
Affected Property: Former Prior Lake Drive-In Theatre, Franklin Trail Southeast (PID
#259020420), Prior Lake, Minnesota
Dear Mr. Herman:
The Minnesota Pollution Control Agency (MPCA) Tanks and Emergency Response Section,
Voluntary Petroleum Investigation and Cleanup Program staff has r,eviewed the following
documents regarding the above-referenced property:
.
" Phase I Environmental Site Assessment, Former Drive-In Theater, Franklin Trail Southeast,
Prior Lake, Scott County, Minnesota" dated November 17, 1995, and prepared by staff of A TEC
Associates, Inc. (A TEe);
.
"Geoprobe Subsurface Evaluation Report, Former Drive-In Theater, Franklin Trail Southeast,.
Prior Lake, Scott County, Minnesota" dated December 15, 199~, and prepared by staff of A TEC;
.
"Progress Report, Prior Lake E-Z Stop, Prior Lake, Minnesota, MPCA Leak No. 180" dated
September 7, 1993, and prepared by staff of Delta Environmental Consultants, Inc. (Delta);
.
"Site and CAD System Monitoring Worksheets - Fourth Quarter 1994, Prior Lake E-Z Stop,
Prior Lake, Minnesota, MPCA Leak No. 180" dated February 2, 1995, and prepared by staff of
Delta; and
.
"Site and CAD System Monitoring Worksheets - Second Quarter 1995, Prior Lake E-Z Stop,
Prior Lake, Minnesota, MPCA Leak No. 180" dated August 23, 1995, and prepared by staff of
Delta.
Based upon our review of the information contained in the above documents, MPCA Voluntary
Petroleum Investigation Cleanup staff have determined that the petroleum contamination
identified at the affected property resulted from a petroleum storage tank release(s) that was not
located on the affected property. The petroleum contamination appears to have originated at the
Crown Oil Co./E-Z Stop property at street address 16735 Franklin Trail Southeast, Prior Lake
TDO (for hearing and speech impaired only): (612)282-5332
Printed on recycled paper containing at least 10% fibers from paper recycled by consumers
1520 Lafayette Rd.; 81. Paul, MN 55155-4194; (612) 296-6300; Regional Offices: Duluth. Brainerd. Detroit Lakes 3 Marshai! ';=cc::ss:s
Fn",,1 Oooortunitv Emplover . Printed on Recvcled Paper
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Mr. John Herman
Page 2
December 29, 1995
located immediately west and adjacent to the access road of the affected property. This petroleum
storage tank release has been assigned MPCA leak site # 00000180.
Due to the fact that the release came from a tank(s) not located on the affected property, the
Commissioner of the MPCA has determined that you are not a responsible person as defined in
Minn. Stat. S 11SC.021 (1992), for the petroleum contamination described above. The
Commissioner is authorized to make this determination by Minn. Stat. S llSC.03, subd. 9 (c) (as
amended by Minn. Laws 1994).
This determination extends to the successors and assigns of the entity to whom it originally applies,
if the successors and assigns are not otherwise responsible for the release.
This letter should not be construed as releasing any person from liability under state or federal laws.
If you have questions concerning your particular situation, the MPCA recommends that you discuss
your concerns with your legal counsel.
If future development of the affected property or the surrounding area is planned, it should be
assumed that petroleum contamination may still be present. If petroleum contamination is
encountered during future development work, the MPCA staff should be notified immediately.
If you would like to obtain information regarding petroleum contamination that may remain at the
leak site and/or the affected property, please call the Tanks and Emergency Response Section File
Request Program at 612/297-8499. The "Leak/Spill and Underground Storage Tank File Request
Form" (Fact Sheet #36) must be completed prior to arranging a time for file review.
If you have any questions regarding this letter, please call Laurie Kania at 612/297-8600.
Sincerely,
L~O_N~'J
Laurie M. Kania
Project Manager
Voluntary Petroleum Investigation and Cleanup
Tanks and Emergency Response Section
LMK:vs
cc: Gregory A. Fontaine, Dorsey & Whitney
David Tetley, A TEC Associates, Inc.
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APPENDIX C
STATE AND FEDERAL GOVERNMENT RECORDS REVIEW (VISTA REPORT)
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SITE ASSESSMENT REPORT
Project Na me/Ref #: 10117
Crystal Care Facility
Franklin Trail SE
Prior Lake, MN
Cross Street: State Highway 13
Latitude/Lon itude: 44.707121, 93.425033
Matt Erickson
Peer Environmental Engineeri
7710 Compurter Avenue, Ste 10
Minneapolis, MN 55435
A) Databases searched to 1 mile:
US EPA NPL National Priority List 0 0 0 0
USEPA CORRACTS RCRA Corrective Actions and
(TSO) associated TSO 0 0 0 0
STATE SPL State equivalent priority list 0 0 0 0
B) Databases searched to 1/2 mile:
STATE SCL State equivalent CERCLlS list 0 0 0
US EPA CERCLlS / Sites currently or formerly under review
NFRAP by US EPA 0 0 0
US EPA TSO RCRA permitted treatment. storage,
disposal facilities 0 0 0
STATE LUST Leakinq Underqround Storaqe Tanks 2 0 3
STATE SWLF Permitted as solid waste landfills,
incinerators, or transfer stations 0 0 0
C) Databases searched to 1/4 mile:
STATE UST Reqistered underqround storaqe tanks 2 0
STATE AST Registered aboveground storage
tanks 0 0
-.
For more information call VISTA Information Solutions, Inc. at 1 - 800 - 767 - 0403.
Report 10: 691501901 Date of Report: June 16. 2000
Version 2.6. 1 Page #1
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USEPA
ERNS
Emergency Response Notification
System of spills
RCRA registered large generators of
hazardous waste
RCRA registered small generators of
hazardous waste
State spills list
o
o
o
US EPA
LG GEN
o
US EPA
SM GEN
STATE
SPILLS
This report meets the ASTM standard E-1527 for standard federal and state government database
research in a Phase I environmental site assessment. A (-) indicates a distance not searched because it
exceeds these ASTM search parameters.
UMITATlON OF UABIUTY
Customer proceeds at its own risk in choosing to rely on VISTA services, in whole or in part, prior to proceeding with any transaction. VISTA
cannot be an insurer of the accuracy of the information, errors occurring in conversion of dala, or for cuslomer's use of dala. VISTA and its
affilialed companies, officers, agents, employees and independenl contractors cannol be held liable for accuracy, slorage, delivery, loss
or ex ense suffered b customer resultin direcll or indirecll from an information rovided b VISTA.
NOTES
-.
For more information call VISTA Information Solutions. Inc. at 1 - 800 - 767 - 0403.
Report ID: 691501901 Date of Report: June 16, 2000
Version 2.6. 1 Page #2
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'4f
....... ......"..
. .
..) ~.....
\~ ..~:~
:...-..........:
Subject Site
Category:
Databases Searched to:
Single Sites
Multiple Sites
Highways and Major Roads
Roads
Railroads
Rivers or Water Bodies
Utilities
*
~
~
~
..oo..............................
....... ...................
..... -'" ......
SITE ASSESSMENT REPORT
Map of Sites within 1 Mile
...........
.' .
: ../....
S?
o
,
0.25
Miles
0.5
,
A
1 mi.
B
1/2 mi.
C
1/4 mi.
D
1/8 mi.
.
+
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o
II
II
NPL, SPL,
CORRACTS
(TSD)
CERCLlS\
NFRAP,
TSD, LUST,
SWLF, SCL
UST
ERNS,
GENERATORS
For More Information Call VISTA Information Solutions, Inc. at 1 - 800 - 767 - 0403
Report 10: 691501901 Date of Report: June 16, 2000
Page #3
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SITE ASSESSMENT REPORT
Map of Sites within 1/4 Mile
170th St
Category: A B
Subject Site Databases Searched to: 1 mi. 1/2 mi.
* Single Sites . II
Multiple Sites + .
~ Highways and Major Roads NPL, SPL, CERCLlS\
~ Roads CORRACTS NFRAP,
~ Railroads (TSD) TSD, LUST,
......."'.................. Rivers or Water Bodies SWLF, SCL
., ........,..""..........--...... Utilities
C
1/4 mi.
0 0.05 0.1
, ,
Miles
D
1/8 mi.
0
0
ERNS,
GENERATORS
UST
For More Information Call VISTA Information Solutions, Inc. at 1 - 800 - 767 - 0403
Report 10: 691501901 Date of Report: June 16, 2000
Page #L1
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SITE ASSESSMENT REPORT
Street Map
....... ..
.' .
: ~j-_.
~
=> 0 0.25 0.5
() , ,
....... Miles
Subject Site
~
~
~
Highways and Major Roads
Roads
Railroads
Rivers or Water Bodies
Utilities
*
............................"'..
...................
......-.. .....
For More Information Call VISTA Information Solutions, Inc. at 1 - 800 - 767 - 0403
Report ID: 691501901 Date of Report: June 16, 2000
Page #5
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SITE ASSESSMENT REPORT
SITE INVENTORY
T JS TIRE TOWING 2939323
1 16675 FRANKLIN TRAIL 0.02 MI X X
NE
PRIOR LAKE, MN 55372
CROWN E-Z STOP 630870
2 16735 FRANKLIN TRAIL SE - PO BOX 57 0.04 MI X X
NW
PRIOR LAKE, MN 55372
No Records Found
HOLIDAY STATIONSTORE #198
3 16800 HWY 13 OR DULUTH AVE SE X .
PRIOR LAKE, MN55372
SCOTT/RICE TELEPHONE CO 3406870
4 4690 COLORADO ST 0.38 MI X
N
PRIOR LAKE, mn 55372
PRIOR LAKE AMOCO 3408972
5 16210 WALKER ST SE 0.43 MI X
N
PRIOR LAKE. mn 55372
..
X = search criteria; . = tag-along (beyond search criteria).
For more information call VISTA Information Solutions, Inc. at 1 - 800 - 767 - 0403.
Report 10: 691501901 Date of Report: June 16, 2000
V~~n267 fuge~
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No Records Found
..
x = search criteria; · = tag-along (beyond search criteria).
For more information call VISTA Information Solutions, Inc. at 1 - 800 - 767 - 0403.
Report 10: 691501901 Date of Report: June 16, 2000
Version 2.6.7 Page #7
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WESTWOOD ELEMENTARY SCHOOL 2941907
5370 WESTWOOD DR SE X
PRIOR LAKE, MN 55372
TOM THUMB (NOKES FOOD) 12681840
1495 160TH ST SE X
PRIOR LAKE, MN 55372
OLD MAINTENANCE SHOP 12682366
MAIN AVE BETWEEN 160TH AND DAKOTA X
PRIOR LAKE. mn 55372
SPRING LAKE CHEMICAL TREATMENT FACIL 12683132
NW 1/4 OF SEC 17 SPRING LAKE TOWNSHI X
PRIOR LAKE. MN 55372
SCOTT CO HIGHWAY DEPT 6750270
MAIN AVE SE CO RD 21 X
PRIOR LAKE, mn 55372
THE WILDS GOLF CLUB 6702854
14998 WILDS PARKWAY X
PRIOR LAKE, MN 55372
PRIOR LAKE MAINTENANCE FACILITY 6702447
17073 ADLEMAN ST X
PRIOR LAKE, MN 55372
.
X = search criteria; . = tag-along (beyond search criteria).
For more information call VISTA Information Solutions, Inc. at 1 - 800 - 767 - 0403.
Report ID: 691501901 Date of Report: June 16, 2000
Version 2.6. 1 Page #8
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SITE ASSESSMENT REPORT
DETAilS
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STATE UST - State Under
Agency Address:
Underground Tanks:
Aboveground Tanks:
Tanks Removed:
Tank ID:
Tank Contents:
Tank Age:
Tank Size (Units):
Tank ID:
Tank Contents:
Tank Age:
Tank Size (Units):
STATE LUST - State Leakin
Agency Address:
Leak ID#:
Leak Re ort Date:
Case Closed Date:
Remediation Status:
Contact:
Description I Comment:
..
e Tank I SRC# 6728
SAME AS ABOVE
2
NOT REPORTED
2
007U
GASOLINE (UNSPECIFIED)
98
REMOVED
NO MONITOR
GAL VANIZED STEEl
BARE/PAINT/ASPH COAT STEEL
REMOVED
NO MONITOR
STEEUIRON
BARE/PAINT/ASPH COAT STEEL
98
Tank Status:
Leak Monitoring:
Tank Piping:
Tank Material:
Tank Status:
Leak Monitoring:
Tank Piping:
Tank Material:
round Stora e Tank I SRC# 6729 EPAI A
us TIRE TOWING
16675 FRANKLIN TRAIL SE
PRIOR LAKE, mn 55372
5428
N/A
1000 (GAllONS)
002U
DIESEL
07/20/1992
09/07/1993
CLOSED
LEROY BOHNSACK
COUNTY: SCOTTOWNER INFO: LEROY BOHNSACK 17072 REVERE WA Y,PRIOR
LAKE, MN, 55372PROJECT MANAGER: JRM/ HYDROGEOLOGISURL
F
~
e Tank I SRC# 6728
SAME AS ABOVE
4
NOT REPORTED
NOT REPORTED
* VISTA address includes enhanced city and ZIP.
For more information call VISTA Information Solutions. Inc. at 1 - 800 - 767 - 0403.
Report ID: 691501901 Date of Report: June 16, 2000
Version 2.6.1 Page #9
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Tank ID: 007U Tank Status: RECONDITIONED
Tank Contents: GASOLINE (UNSPECIFIED) leak Monitoring: MONITOR PRESENT
Tank Age: NOT REPORTED Tank Piping: GAL VANIZED STEEL
Tank Size (Units): 4000 (GALLONS) Tank Material: BARE/PAINT/ASPH COAT STEEL
Tank ID: 002U Tank Status: RECONDITIONED
Tank Contents: GASOLINE (UNSPECIFIED) leak Monitoring: MONITOR PRESENT
Tank Age: NOT REPORTED Tank Piping: GAL VANIZED STEEL
Tank Size (Units): 4000 (GALLONS) Tank Material: BARE/PAINT/ASPH COAT STEEL
Tank ID: 003U Tank Status: RECONDITIONED
Tank Contents: DIESEL leak Monitoring: MONITOR PRESENT
Tank Age: 73 Tank Piping: GAL VANIZED STEEL
Tank Size (Units): 8000 (GALLONS) Tank Material: BARE/PAINT/ASPH COAT STEEL
Tank ID: 004U Tank Status: RECONDITIONED
Tank Contents: GASOLINE (UNSPECIFIED) leak Monitoring: MONITOR PRESENT
Tank Age: 73 Tank Piping: GAL VANIZED STEEL
Tank Size (Units): 4000 (GALLONS) Tank Material: BARE/PAINT/ASPH COAT STEEL
I STATE LUST - State leakina Underaround StoraQe Tank I SRC# 6729 I EPAI Aqencv 10: IN/A
Agency Address: CROWN OIL CO/E-Z STOP
76735 FRANKLIN TRAIL SE
PRIOR LAKE mn 55372
leak 10#: 780
leak Report Date: 04/03/7986
Contact: DA VE MILLER
Description I Comment: COUNTY: SCOTTPROJECT MANAGER: SHV/ HYDROGEOLOGIST:SCT
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STATE LUST - State leakin
Agency Address:
I
leak ID#:
leak Report Date:
Case Closed Date:
Remediation Status:
Contact:
Description I Comment:
I
05/07/7997
CLOSED
KEITH YOKOM
COUNTY: SCOTTOWNER INFO: HOLlDA Y COMPANIES,PO BOX
7224,MINNEAPOLlS,MN55440PROJECT MANAGER: RHN/ HYDROGEOLOGIST:
II
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* VISTA address includes enhanced city and ZIP.
For more information call VISTA Information Solutions, Inc. at 1 - 800 - 767 - 0403.
Report 10: 691501901 Date of Report: June 16, 2000
Version 2.6.7 Page #70
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STATE LUST - State leakin
Agency Address:
leak 10#:
leak Re ort Date:
Case Closed Date:
Remediation Status:
Contact:
Description / Comment:
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STATE LUST - State leakin
Agency Address:
Leak 10#:
leak Re ort Date:
Case Closed Date:
Remediation Status:
Description / Comment:
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5355
0612517992
7017317993
CLOSED
JOHN CRAIG
COUNTY: SCOTTOWNER INFO: SCOTTIRICE TELEPHONE C0,4690 COLORADO
ST,PRIOR LAKEMN,55372PROJECT MANAGER' SMI HYDROGEOLOGIST:
497
0810717987
0817717988
CLOSED
COUNTY: SCOTT PROJECT MANAGER: MKBI HYDROGEOLOGIST:JEA
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No Records Found
· VISTA address includes enhanced city and ZIP.
For more information call VISTA Information Solutions, Inc. at 1 - 800 - 767 - 0403.
Report ID: 691501901 Date of Report: June 16. 2000
Version 1.6,7 Page #7 7
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STATE LUST - State Leakin
Agency Address:
Leak 10#:
Leak Report Date:
Contact:
Description / Comment:
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STATE LUST - State Leakin
Agency Address:
Leak 10#:
Leak Re ort Date:
Case Closed Date:
Remediation Status:
Description / Comment:
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round Stora e Tank / SRC# 6729
SAME AS ABOVE
72033
77/02/7998
PAUL HOKENESS
COUNTY: SCOTTOWNER INFO: CITY OF PRIOR LAKE, 76200 EAGLE CREEK AVE
SE,PRIOR LAKE,MN55372-7 774PROJECT MANAGER: AA/ HYDROGEOLOGIST:CI
. VISTA address includes enhanced city and ZIP.
For more information call VISTA Information Solutions, Inc. at 1 - 800 - 767 - 0403.
Report ID: 691501901 Date of Report: June 16, 2000
Version 2. 6. 7 Page #7 2
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SITE ASSESSMENT REPORT
DESCRIPTION OF DATABASES SEARCHED
NPl
SRC#: 6558
VISTA conducts a database search to identify all sites within 1 mile of your property.
The agency release date for NPl was January, 2000.
The National Priorities List (NPL) is the EPA's database of uncontrolled or abandoned
hazardous waste sites identified for priority remedial actions under the Superfund
program. A site must meet or surpass a predetermined hazard ranking system score, be
chosen as a state's top priority site, or meet three specific criteria set jointly by the US
Dept of Health and Human Services and the US EPA in order to become an NPL site.
SPl
SRC#: 6493
VISTA conducts a database search to identify all sites within 1 mile of your property.
The agency release date for Superfund Permanent list Of Priorities was October, 1999.
This database is provided by the Pollution Control Agency. The agency may be
contacted at: 612-297-1607.
The Minnesota Superfund Permanent list of Priorities (PLP) includes identified hazardous
waste sites where investigation and cleanup are needed, activities leading to cleanup
are underway, or cleanup actions have been completed and long term motitoring or
maintenance continues.
SPl
SRC#: 6494
VISTA conducts a database search to identify all sites within 1 mile of your property.
The agency release date for Master Entity list was October, 1999.
This database is provided by the Pollution Control Agency, PW and SW Division. The
agency may be contacted at: 651-296-17~6.
CORRACTS
SRC#: 6556
VISTA conducts a database search to identify all sites within 1 mile of your property.
The agency release date for HWDMS/RCRIS was December, 1999.
The EPA maintains this database of RCRA facilities which are undergoing "corrective
action". A "corrective action order" is issued pursuant to RCRA Section 3008 (h) when
there has been a release of hazardous waste or constituents into the environment from a
RCRA facility. Corrective actions may be required beyond the facility's boundary and
can be required regardless of when the release occurred, even if it predates RCRA.
~
For more information call VISTA Information Solutions, Inc. at 1 - 800 - 767 - 0403.
Report ID: 691501901 Date of Report: June 16,2000
Version 2.6.7 Page #73
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CERClIS
SRC#: 6474
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NFRAP
SRC#: 6475
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SCl
SRC#: 6492
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RCRA-TSD
SRC#: 6556
SWlF
SRC#: 5818
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SWlF
SRC#: 6493
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VISTA conducts a database search to identify all sites within 1/2 mile of your property.
The agency release date for CERClIS was October, 1999.
The CERCLlS List contains sites which are either proposed to or on the National Priorities
List(NPL) and sites which are in the screening and assessment phase for possible inclusion
on the NPL. The information on each site includes a history of all pre-remedial. remedial.
removal and community relations activiies or events at the site. financial funding
information for the events. and unrestricted enforcement activities.
VISTA conducts a database search to identify all sites within 1/2 mile of your property.
The agency release date for CERClIS-NFRAP was October, 1999.
NFRAP sites may be sites where. following an initial investigation. no contamination was
found. contamination was removed quickly. or the contamination was not serious
enough to require Federal Superfund action or NPL consideration.
VISTA conducts a database search to identify all sites within 1/2 mile of your property.
The agency release date for Voluntary Investigation Cleanup Program (VIe) Database
was October, 1999.
This database is provided by the Pollution Control Agency. Site Assessment Unit. The
agency may be contacted at: 612-296-8407.
The Minnesota Voluntary Investigation and Cleanup Program Database includes
identified hazardous waste sites where the investigation and cleanup activities are
completed through Voluntary actions of the responsible party(s).
VISTA conducts a database search to identify all sites within 1/2 mile of your property.
The agency release date for HWDMS/RCRIS was December, 1999.
The EPA's Resource Conservation and Recovery Act (RCRA) Program identifies and
tracks hazardous waste from the point of generation to the point of disposal. The RCRA
Facilities database is a compilation by the EPA of facilities which report generation.
storage. transportation. treatment or disposal of hazardous waste. RCRA TSDs are
facilities which treat. store and/or dispose of hazardous waste.
VISTA conducts a database search to identify all sites within 1/2 mile of your property.
The agency release date for Permitted Solid Waste Disposal Facilities was March, 1999.
This database is provided by the Pollution Control Agency. Document Center. The
agency may be contacted at: 612-296-7276.
VISTA conducts a database search to identify all sites within 1/2 mile of your property.
The agency release date for Open Dump Inventory was October, 1999.
This database is provided by the PW SW Division. PGM Development. The agency may
be contacted at: 612-297-1796.
For more information call VISTA Information Solutions. Inc. at 1 - 800 - 767 - 0403.
Report 10: 691501901 Date of Report: June 16, 2000
Version 2.6. 1 Page #14
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LUST
SRC#: 6729
VISTA conducts a database search to identify all sites within 112 mile of your property.
The agency release date for Spills and leak Report log was November, 1999.
This database is provided by the Pollution Control Agency, Hazardous Waste
Division-Tanks and Spills. The agency may be contacted at: 612-297-2552.
UST's
SRC#: 6724
UST's
SRC#: 6728
AST's
SRC#: 6728
VISTA conducts a data base search to identify all sites within 1 14 mile of your property.
The agency release date for Statewide Facilities Tank Information was January, 2000.
This database is provided by the Department of Agriculture, Agronomy and Plant
Protection. The agency may be contacted at: 612-297-5640.
VISTA conducts a database search to identify all sites within 1/4 mile of your property.
The agency release date for Underground Storage Tanks was November, 1999.
This database is provided by the Print Communications Division. The agency may be
contacted at: 612-297 -2552; Caution-Many states do not require registration of heating
oil tanks, especially those used for residential purposes.
VISTA conducts a database search to identify all sites within 1/4 mile of your property.
The agency release date for Aboveground Storage Tanks was November, 1999.
This database is provided by the Print Communications Division. The agency may be
contacted at: 612-297-2552.
ERNS
SRC#: 6181
RCRA-lgGen
SRC#: 6556
..
VISTA conducts a database search to identify all sites within 1/8 mile of your property.
The agency release date for was August, 1999.
The Emergency Response Notification System (ERNS) is a national database containing
records from October 1986 to the release date above and is used to collect information
for reported releases of oil and hazardous substances. The database contains
information from spill reports made to federal authorities including the EPA. the US Coast
Guard, the National Response Center and the Department ofTransportation. The ERNS
hotline number is (202) 260-2342.
VISTA conducts a database search to identify all sites within 1/8 mile of your property.
The agency release date for HWDMS/RCRIS was December, 1999.
The EPA's Resource Conservation and Recovery Act (RCRA) Program identifies and
tracks hazardous waste from the point of generation to the point of disposal. The RCRA
Facilities database is a compilation by the EPA of facilities which report generation,
storage, transportation, treatment or disposal of hazardous waste. RCRA Large
Generators are facilities which generate at least 1000 kg./month of non-acutely
hazardous waste ( or 1 kg./month of acutely hazardous waste).
For more information call VISTA Information Solutions, Inc. at 1 - 800 - 767 - 0403.
Report 10: 691501901 Date of Report: June 16, 2000
Version 2.6. 7 Page #75
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RCRA-SmGen VISTA conducts a database search to identify all sites within 1/8 mile of your property.
SRC#: 6556 The agency release date for HWDMS/RCRIS was December, 1999.
The EPA's Resource Conservation and Recovery Act (RCRA) Program identifies and
tracks hazardous waste from the point of generation to the point of disposal. The RCRA
Facilities database is a compilation by the EPA of facilities which report generation,
storage, transportation, treatment or disposal of hazardous waste. RCRA Small and Very
Small generators are facilities which generate less than 1000 kg./month of non-acutely
hazardous waste.
SPILL
SRC#: 6339
VISTA conducts a database search to identify all sites within 118 mile of your property.
The agency release date for Spills and Leak Report Log was September, 1999.
This database is provided by the Pollution Control Agency, Hazardous Waste
Division-Tanks and Spills. The agency may be contacted at: 651-297-8499.
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For more information call VISTA Information Solutions, Inc. at 1 - 800 - 767 - 0403.
Report 10: 691501901 Date of Report: June 16, 2000
Version 2.6.7 Page #76
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Minnesota Pollution Control Agency
September 7, 1993
Mr. Leroy Bohnsack
17072 Revere Yay
Prior Lake, Minnesota 55372
Dear Mr. Bohnsack:
RE: retroleum Tank Release Site Closure
Site: TJ's Tire and Towing, 16675 Franklin Trail Southeast
Site 1D*: LEAK00005428
The Minnesota Pollution Control Agency (MPCA) staff has determined that the
cleanup performed in response to the petroleum tank release at the site
referenced above has adequately addressed the petroleum contamination, and
therefore the file regarding this release will be closed.
On July 20, 1992, a petroleum tank release was reported to the MPCA. Since
then, the following corrective actions have been taken in response to the
release:
1. Two 1,000 gallon gasoline underground storage tanks (USTs) were removed
from the site.
2. Seven soil probes were completed to a depth of 9 feet below grade.
Photoionization detector results indicate, contamination below 10 parts per
million total petroleum hydrocarbons (THC) in the hand auger borings.and
250 parts per million THC was detected at nine feet in soil probe SP~2.
Soil stratigraphy consists of alternating coarse sand, clay and gravel
deposits.
3. Ground water was detected in the tank basin at approximately 7 feet below
grade: A water well receptor survey identified 14 wells within a one mile
radius of the site. The static water level of the wells appears to be
between 60 and 115 feet. A water sample collected at the base of the
excavation indicated non-detectabie levels of petroleum hydrocarbons.
4. Based on the available information, it appears the threat to human health
and the environment is minimal.
The MPCA staff concur with the conclusions of Nova that these actions have
adequately addressed the petroleum tank release. Therefore, MPCA staff does
not intend to require any more investigation or clean-up work in response to
this release. However, the MPCA reserves the right to reopen this file and
require additional work if in the future more work is determined to be
necessary, and this letter does not release any party from liability for this
contamination.
MPCA Toll Free 1-800-657-3864. TcJcphone Device for the Deaf (TOO) ~121291.~3~3. Greater Minnesota TOO 1-8~27-3~:)
520 Lafayette Rd.; St. PnuL MN 55155-4194; (612) 296-6300; Regional Offices: Duluth. Brainerd. Detroit Lai~es' i\ilarshcii , -
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Mr. Leroy Bohnsack
Page 2
September 7, 1993
Because you performed the requested work, the state may reimburse you for a
major portion of your costs. The Petroleum Tank Release Cleanup Act
establishes a fund which in certain circumstances provides partial
reimbursement for petroleum tank release cleanup costs. This fund is
administered by the Petroleum Tank Release Compensation Board. More specific
eligibility rules are available from the Petro Board (612/297-1119 or
612/297-4203).
Thank you for your cooperation with the MPCA in responding to this petroleum
tank release to protect the public health and the environment of the state of
Minnesota. If you have any questions regarding this correspondence, please
call me at 612/297-8613.
II Sincerely,
I~~fr
Project Leader
Cleanup Unit I
Tanks and Spills Section
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cc:
Robin Hanson, Department of Commerce
Kay Kuhlmann, Manager
Al Frechette, Scott County Solid Waste Officer
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Page ii
M93-127R.OO1\Hl
August S, 1993
List of Tables
Table
1. Organic Vapor Screening Results
2. Laboratory Analysis Results
List of Figures
Figure
1. Site Location Map
2. Site Diagram
3. MGS Water Well Location Map
List of Appe~dices
Appendix
A. MPCA Excavation Report for Petroleum Release Sites
B. Soil Probe and Hand Auger Boring Logs
C. Laboratory Analysis Reports
D. MGS Water Well Logs
E. MPCA Hydrogeologic Setting and Characterization Worksheet
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Pageiii
M93-127R.OOl\HI
August 5, 1993
PREPARED BY:
~JvJ.il'(. ~
Julie K. Swanson
Geologist
REVIEWED BY:
RoJt:;kkegf-
Geological Engineer
Project Manager
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Page 1
M93-127R.OOl\Hl
August 5, 1993
1.0 INTRODUCTION
1.1 Purpose
Nova Environmental Services, Inc. (Nova) was retained by LeRoy Bohnsack to investigate a
petroleum release at TJ's Tire, 16675 Franklin Trail, Prior Lake, Minnesota (Figure 1). The
purpose of the investigation was to determine the extent of a gasoline release identified
during the removal of ~ 1 ~ gal~nderground storage tanks (UST).
1.2 Scope of Work
The Scope of Services performed by Nova during the investigation included:
.
Advancing ~ve~robes to a depth of 9 feet;
.
Advancing two hand auger borings to depths of 8.5 and 10 feet;
.
Collecting soil samples for classification and field analysis of organic vapors using an
HNU photoionization detector (PID);
.
. Collecting four soil samples for laboratory analysis of benzene, ethyl benzene,
toluene, xylenes (BETX) and gasoline range organics (GRO);
.
Collecting one water sample from a hand auger boring for laboratory analysis of
BETX and GRO;
.
Preparing a Petroleum Tank Release Investigation report presenting our data, methods
and procedures, conclusions and recommendations.
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Page 2
M93-127R.OO1\Hl
August 5, 1993
2.0 BACKGROUND INFORMATION
2.1 Site Location
TJ's Tire property is located in the northeast I.4 of the southeast I.4 of the northwest 1,4 of the
southeast I.4 of Section 2, Township 114 North, Range 22 West in Prior Lake, Minnesota
(Figure 1). The site is located in a commercial and residential neighborhood.
2.2 Site History
Two USTs were excavated from separate tank basins on the -site. Petroleum impacted soil
was encountered below both tanks (tank basin #1 and tank basin #2) at depths of
approximately 8 to 9 feet below ground surface. Petroleum impacts appeared to be
concentrated on the north sides of the excavations. Ground water was encountered in both
tank basins at 7 feet below ground surface.
Test pits were dug at the time of the tank remov~s to determine the extent of petroleum
impacts. Impacted soil was encountered in the test pit dug north of tank basin #1. No
evidence of contamination was observed in the test pit north of tank basin #2.
Excavation of petroleum impacted soil was not attempted due to the presence of ground
water in the excavations. A copy of the MPCA Excavation Report for Petroleum Release
sites prepared by Applied Engineering dated September 29, 1992 is presented in Appendix
A.
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Page 3
M93-127R.OOI\HI
August S, 1993
3.0 METHODS AND PROCEDURES
3.1 Soil Probe Borings
Seven soil probes were advanced in the locations shown on Figure 2, on April 23, 1993.
The soil probes were performed by a Nova representative using a JMC Environmental Sub-
Soil Probe. The soil probe consists of a 1 inch diameter by 36 inch long stainless steel
sampling tube which is alternately pounded into the soil and removed. Extensions were
added to the sampling tube as it was advanced deeper into the soil. Soil samples were
collected in a plastic sleeve which was removed from the sampling tube after each sample
was collected. Soil probe borings were backfilled with bentonite and sealed at the ground
surface with an asphalt cold patch.
3.2 Hand Auger Borings
Two hand auger borings (HA-I and HA-2) were advanced in the locations of the former UST
tank basins on April 23, 1993 (Figure 2). Hand au~er HA-I was advanced to a depth of 8.5
feet through tank basin #2. Hand auger HA-2 was advanced to a depth of 10 feet through
tank basin #1. The hand auger borings were advanced by a Nova representative using a four
inch diameter, stainless steel, bucket type hand auger. Soil samples were collected from
cuttings contained in the auger bucket.
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Page 4
M93-127R.OO1\Hl
August S, 1993
3.3 Decontamination of Equipment
All tubing and sampling equipment was decontaminated prior to arrival on site, and between
probe locations. The cleaning procedure consisted of soap and water wash using a brush and
tap water rinse.
The hand auger was cleaned between samples to minimize the risk of cross-contamination.
The cleaning procedure consisted of a soap and water wash using a brush and tap water
rinse.
3.4 Soil Sample Collection and Classification
Continuous soil samples were collected in each soil probe and hand auger boring. A
physical description of the soil collected from each sampling interval was recorded in the
field. Logs of the soil probe and hand auger borings are presented in Appendix B.
3.5 Soil Organic Vapor Monitoring
A portion of each soil sample was placed in a glass container and screened for headspace
organic vapors with a PID in accordance with Minnesota Pollution Control Agency (MPCA)
recommended procedures. The PID was equipped with a 10.2 eV bulb and was calibrated to
an isobutylene standard.
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Page 5
M93-127R.OOl\Hl
August 5. 1993
3.6 Soil Sample Collection and Analysis
Soil samples for laboratory analysis were collected from soil probes SP-l (7-8 feet), SP-4 (7-
8 feet), SP-5 (8-9 feet) and SP-6 (7-8 feet). Soil samples were collected in laboratory-
cleaned glass jars with teflon-lined lids and placed on ice in the field. The samples were
submitted to Twin City Testing Laboratories in St. Paul, Minnesota on April 23, 1993 under
chain-of-custody protocol, for analysis of BETX and GRO.
3.7 Ground Water Sample Collection and Analysis
A ground water sample for laboratory analysis was collected from hand auger HA-2. The
sample was collected by advancing the hand auger to a depth below the water table,
removing the hand auger and inserting a temporary well constructed of 2 inch diameter
threaded PVC riser pipe and screen. The temporary well was installed so that the screen
intersected the water table. After a sufficient amount of water had entered the temporary
well, a bailer was used to extract a ground water sample. A ground water sample from hand
auger HA-l was not obtained due to the clayey soil conditions. The ground water sample
from hand auger HA-2 was transferred into laboratory-cleaned 40 ml vials and immediately
placed in a cooler with ice. The ground water sample was delivered to Twin City Testing
Corporation of St. Paul, Minnesota for analysis of BETX and GRO.
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Page 6
M93-127R.OOl \HI
August 5, 1993
4.0 SUBSURFACE INVESTIGATION REPORT
4.1 Regional Geology/Hydrogeology
The Quaternary geology in the vicinity of the site consists of unconsolidated glacial deposits
extending to a depth of approximately 160 feet below the ground surface where the upper
most bedrock is present. The unconsolidated glacial deposits consist of a grey, yellowlbrown
clayey till underlain by Prairie du Chein bedrock.
4.2 Local Geology/Hydrogeology
Soil encountered during the soil probes and hand auger consisted of fine to coarse silty sand
with gravel and trace clay to the termination depth of the borings, 9 feet (Appendix B).
----.,,;'
Ground water was encountered approximately 8 feet below grade. The local ground water
flow direction is estimated toward Prior Lake, located 1/2 mile northwest of the site.
4.3 Organic Vapor Screening Results
Jar headspace monitoring with the PID detected the presence of organic vapors in soil
samples from soil probe SP-2 and hand auger HA-l and HA-2. Organic vapors were
detected at a concentration of 250 ppm in the soil sample collected from a depth of 6 to 9
feet in soil probe SP-2. Soil probe SP-2 was located north of tank basin #1. Organic vapors
were detected from a depth of 0 to 3 feet in tank basin # 1 and 2 at concentrations of 1 and 6
ppm, respectively. No organic vapors were detected in the soil samples collected from soil
probes SP-I, SP-3, SP-4, SP-5, SP-6 or SP-7. PID readings are summarized on Table 1 and
are included on the boring logs presented in Appendix B.
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Page 7
M93-127R.OOl\Hl
August S, 1993
4.4 Laboratory Results - Soil and Ground Water
Laboratory analysis results show that hydrocarbons were not detected in the four soil samples
submitted for laboratory analysis. Laboratory analysis results show that hydrocarbons were
not detected in the water sample collected from HA-2(tank basin #1). A summary of
laboratory results is included in Table 2 and a copy of the laboratory report is presented in
Appendix C.
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Page 8
M93-127R'()() 1 \H 1
Auguat S, 1993
5.0 POTENTIAL RECEPTOR SURVEY
A receptor survey was conducted to identify potential on-site and off site receptors of
petroleum vapors or impacted ground water associated with the petroleum release. The
receptor survey consisted of:
. Reviewing water well records within one mile of the site.
. Evaluating petroleum vapor impacts to surrounding structures and utilities.
Minnesota Geological Survey (MGS) records of water wells indicate three public and eleven
private water supply wells are located within a one mile radius of the site (Figure 3). The
recorded depths of the water wells range from 94 to 372 feet below ground surface. Two of
the water wells identified are located hydraulically downgradient with respect to shallow
ground water flow (MGS # 207320 and 207319). Review of the downgradient well logs
show the presence of confining layers (clay) between the near surface impacted water and the
screened depth of the downgradient wells. Static water levels range between 60 to 115 feet
below grade. Copies of the available water well. logs are included in Appendix D.
An MPCA Hydrogeologic Setting and Ground Water Contamination Characterization
Worksheet summarizing the potential risk associated with this release is included in
Appendix E.
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Page 9
M93-127R.OOI\H1
August S, 1993
6.0 DISCUSSION
A petroleum release was detected at this site on July 20, 1992 during the removal of two
.
1,000 gallon gasoline USTs. Ground~ter was present in both tank basins at 7 feet belo~
grade. Petroleum contaminated soil was encountered to approximately 9 feet below grade in
-......... --
each tank basin. Excavation of petroleum impacted SOllWas not conducted because of the
presence of ground water in the tank basins. A test pit dug northeast of tank basin #1
encountered impacted soil.
-
Additional investigation was performed to define the extent of the petroleum release. The
additional investigative work included advancing seven soil probes surrounding the former
UST basins, advancing a hand auger in each UST basin, screening soil samples for organic
vapors, and collecting soil and ground water samples for laboratory analysis.
PID screening of soil samples from soil probe SP- 2 confirmed that petroleum impacted soil
was present north of tank basin #1. The remaining soil probes did not detect the presence of
organic vapors. There is no evidence of impacted ~oil of organic vapors extending off-site.
Hand auger borings HA-l and HA-2 were advanced through the center of each tank basin.
Relatively low concentrations of organic vapors were detected in the soil samples collected
from a depth of 0 to 6 feet in each tank basin. No organic vapors were detected in the soil
samples collected from a depth of 6 to 10 feet and 6 to 8.5 feet in tank basin #1 and #2,
respectively.
Eour soil samples and one ground water sample were collected for laboratory analysis of
-........... --------
BETX and GRO. Laboratory analysis of soil samples collected'from soil probes SP-l, SP-4,
SP-5 and SP-6 did nnt i1PU{ct petroleum hydrocarbons at concentrations above the laboratory
...,.--
detection limits. Laboratory analysis of a ground water sample (Water-I) collected from tank
basin #1 did ~ -.det~t ~troleum hydrocarbons at concentrations above the laboratory
detection limit.
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Page 10
M93-127R.OO1\Hl
August S, 1993
Review of well logs from properties located within a one-mile radius of the site indicate that
downgradient wells are cased through confining layers to depths of at least 153 feet. There
is no evidence of potential receptors of impacted ground water from this site.
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Page 11
M93-121R.OO1\HI
August S, 1993
7.0 CONCLUSIONS AND RECOMMENDATIONS
A petroleum release has occurred at TJ's Tire located at 16675 Franklin Trail, Prior Lake,
Minnesota. The source of the release were two 1,000 gallon gasoline USTs.
Soil and ground water samples collected from the hand auger and soil probes indicate the
extent of soil and ground water impacts are limited to 'the north of tank basin #1, and do not
extend off-site.
The MGS file search did not identify water wells in the vicinity that would be at risk of
being impacted by the release. The building on-site does not have a basement.
Based on the results of this investigation, the limited extent of the release, and the absence of
potential receptors, no additional investigative or corrective actions are warranted.
,
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M93-127R.OOI \HI
Auguat S, 1993
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Page 13
M93-127R.OOl\Hl
August S, 1993
TABLE 2
LABORATORY RESULTS - SOIL
Concentrations (ppm)
Soil-l Soil-2 Soil-3 Soil-4
SP-I. (7'-8') SP-4. (7'-8') SP-5. (8'-9') SP-6. (7'-8') POL
Benzene ND ND ND ND 0.05
Toluene ND ND ND ND 0.05
Ethyl Benzene ND ND ND ND 0.05
Xylenes ND ND ND ND 0.05
GRO ND ND ND ND 10
Note: Soil results recorded in mg/kg = milligrams per kilogram = parts per million (ppm).
LABORATORY RESULTS - GROUND WATER
Concentrations (Ppb)
Water 1
HA-2.8' POL
Benzene ND 5
Ethyl Benzene ND 5
Toluene ND 5
Xylene ND 5
GRO ND 30
Note: Ground water results recorded in ug/l - micrograms per liter = parts per billion
(Ppb) .
ND = Not Detected
PQL = Practical Quantitative Limit
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I
Table 1
Ground Water ElevatIon Data
I E-Z Stop
Prior Lake. Minnesota
Delta No. A092-536-1
Top Of
Casing Depth Ground
I Elevation To Water Product
Well Date (feet ASL) Water Elevation Thickness
MW-l 09/09/87 966.33 10.76 955.57
MW-l 10/13/87 966.33 10.97 955.36
I MW-l 11123/87 966.33 11.3 955.03
MW-l 03118188 966.33 11.76 954.57
MW-l 07/14/88 966.33 11.22 955.11
MW-l 08125188 966.33 11.42 954.91
MW-l 10/03188 966.33 11.55 954.78
I MW-l 10/12/88 966.33 11.63 954.7
MW-l 10/14/88 966.33 11.66 954.67
MW-l 12109188 966.33 11.64 954.69
MW-l 01118189 966.33 12.05 954.28
I MW-l 02123/89 966.33 12.30 954.03
MW-l 04105189 966.33 11.97 954.36 0.06
MW-l 04121/89 966.33 11.86 954.47
MW-l 05110/89 966.33 11.48 954.85
MW-l 06107/89 966.33 11.12 955.21
I MW-l 06114/89 966.33 11.07 955.26
MW-l 07/07/89 966.33 10.91 955.42
MW-l 08104/89 966.33 10.6 955.73
MW-l 08109/89 966.33 10.63 955.5
MW-l 09104/89 966.33 1105 955.26
I MW-l 10/10/89 966.33 1123 9551
MW-1 11/03/69 966.33 11.17 955.16
MW-l 11120/89 966.33 11 17 95516
MW-l 03/12/90 966.33 12 954.33
I MW-l 03/19/90 966.33 11.92 954.41
MW-1 03123/90 966 33 1201 954 32
MW-l 03129/90 966.33 1181 954 52
MW-1 04/12/90 966.33 1179 954.54
MW-l 04128/90 966.33 11.65 954.68
I MW-l 05116190 966.33 11.41 954.92
MW-l 06/05190 966.33 11.06 955.27
MW-l 07/10/90 966.33 9.9 956.43
MW-1 06/07/90 966.33 8.81 957.52
MW-1 09/13/90 966.33 9.21 957.12
I MW-l 10/04/90 966.33 9.39 956.94
MW-l 11/02/90 966.33 9.42 956.91
MW-l 12/11/90 966.33 9.95 956.38
MW-l 01110/91' 966.33 10.52 955.81
MW-l 03121/91 966.33 10.8 955.53
I MW-l 04/19/91 966.33 10.42 955.91
MW-l 05115/91 966 33 9.89 956.44
MW-1 06/20/91 966.33 6.61 95772
MW-1 07/24191 966.33 9.14 95719
I MW-1 08/16/91 966.33 6.33 960
MW-1 09/17/91 966.33 9.26 957 07
MW-1 10/24/91 966.33 9.63 956.7
MW-l 11121/91 966.33 9.26 957.07
MW-l 12118/91 966.33 9.68 956.65
I MW-1 14/31191 966 33 9.79 956 54
MW-l 01/21/92 966.33 9.82 956.51
MW-l 04129/92 966.33 9.21 957.12
MW-l 07/17/92 966.33 8.19 958.14
I MW-l 08/07/92 966.33 8.57 957.76
MW-l 09/08192 966.33 8.2 958.13
MW-l 10/13192 966.33 8.23 958.1
MW-l 11105192 966.33 8.55 957 78
MW-l 12/11/92 96633 8.90 957.43
I MW-l 01/08/93 966 33 776 95857
! MW-1 02110/93 966.33 9.86 956.47
MW-l 03131/93 966. 33 10.05 95628
MW-l 04126/93 966.33 9.45 956 88
MW-l 05124193 966.33 909 957 24
I MW-l 06/03/93 966. 33 884 957.49
MW-l 07/12193 966.33 758 958.75
MW-l 08126/93 966.33 748 958.85
MW-l 09/16/93 966.33 7 ;1 958.62
I MW-l 10/14/93 966.33 8.73 957.6
MW-1 11126193 966.33 8.59 957.74
MW-l 01/21/94 966.33 9.96 956.37
Page 1
I
I
I Table 1
Ground Water Elevation Data
E-Z Stop
Prior Lake. Minnesota
Delta No. A092-536-1
I Top Of
Casing Depth Ground
Elevation To Water Product
Well Date (feet ASL) Water Elevation Thickness
MW-1 OS/20/94 966.33 9.42 956.91
I MW-1 06109/94 966.33 9.67 956.66 NM
MW-1 07108194 966.33 9.94 956.39 NM
MW-1 08/05/94 966.33 10.01 956.32
MW-1 11/10/94 966.33 9.59 956.74
I MW-1 12106/94 966.33 9.62 956.71
MW-1 05112/95 966.33 9.69 956.64
MW-1 06126/95 966.33 9.59 956.74
MW-1 10/12/95 966.33 12.04 954.29
MW-1 01109/96 966.33 12.38 953.95 0.01
I MW-1 OS/22/96 966.33 11.78 954.55
MW-1 08/24/96 966.33 10.86 955.47
MW-1 11/22/96 966.33 10.99 955.34 0.01
MW-1 02/11/97 966.33 11.48 954.85 0
MW-1 05113/97 966.33 10.4 955.93 0
I MW-1 09/16/97 966.33 9.25 95708 0
MW-1 12/09/97 966.33 9.91 956.42 0
MW-1 03/18/98 966.33 10.5 955.83 0
I MW-2 09109/87 964.41 9.06 955.35
MW-2 10/13/87 964.41 9.87 954.54
MW-2 11/23187 964.41 9.61 954.8
MW-2 03/18/88 964.41 10 954.41
MW-2 07/14/88 964.41 9.62 954.79
I MW-2 08/25188 964.41 9.73 954.68
MW-2 10/03/88 964.41 9.86 954.55
MW-2 10/12/88 964.41 9.95 954.46
MW-2 10/14/88 964.41 9.99 954.42
MW-2 12/09/88 964.41 9.92 954.49
I MW-2 01/18/89 964.41 105 953.91
MW-2 02/23/89 964.41 10.81 953.6
MW-2 04/05189 964.41 9.98 954.43
MW-2 04/21/89 964.41 9.92 954.49
I MW-2 05/10/89 96441 9.45 954.96
MW-2 06107189 96441 9.16 955.25
MW-2 06114/89 964.41 9.18 955.23
MW-2 07/07/89 964.41 9.11 955.3
MW-2 08/04/89 964.41 9 955.41
I MW-2 08/09/89 964.41 9.15 955.26
MW-2 09104/89 964.41 9.2 955.21
MW-2 10/10/89 964.41 9.44 954.97
MW-2 11/03/89 964.41 9.4 955.01
MW-2 11/20/89 964.41 9.41 955
I MW-2 03/12/90 964.41 10.35 954.06
MW-2 03/19/90 964.41 9.97 954.44
MW-2 03/23/90 964.41 10 95441
MW-2 03129/90 964.41 9.8 954.61
I MW-2 04/12/90 964.41 9.85 954.56
MW-2 04/28/90 96441 9.14 954.67
MW-2 05/16/90 964.41 10.1 954.31
MW-2 06105/90 964.41 9.08 955.33
MW-2 07/10/90 964.41 872 955.69
I MW-2 08/07/90 96441 7.43 956.98
MW-2 09/13/90 964.41 765 956.76
MW-2 10104/90 964.41 7.79 956.62
MW-2 11102/90 964.41 7.86 956.55
MW-2 12/11/90 964.41 8.22 956.19
I MW-2 01/10/91 964.41 8.84 955.57
MW-2 03/21/91 964.41 8.93 955.48
MW-2 04/19/91 964.41 8.42 955.99
MW-2 05/15/91 96441 8 95641
I MW-2 06/20/91 964.41 7 13 957 28
MW-2 07/24/91 964.41 761 956.8
MW-2 08/16/91 96441 7i2 956.69
MW-2 09/17/91 964.41 753 956.88
MW-2 10/24/91 96441 793 956.48
I MW-2 11/21/91 964.41 749 956.92
MW-2 12/18/91 96441 789 95652
MW-2 12/31/91 964.41 797 956.44
MW-2 01/21/92 964.41 806 956.35
I Page 2
I
Table 1
I Ground Water Elevation Data
E-Z Stop
Prior Lake, Minnesota
Delta No. A092-536-1
Top Of
I Casing Depth Ground
Elevation To Water Product
Well Date lfeet ASll Water Elevation Thickness
MW-2 04/29/92 964.41 7.45 956.96
I MW-2 07117/92 964.41 6.81 957.6
MW-2 08107/92 964.41 6.67 957.74
MW-2 09108/92 964.41 6.84 957.57
MW-2 10113/92 964.41 6.83 957.58
MW-2 11105/92 964.41 6.83 957.58
I MW-2 12/11/92 964.41 7.27 957.14
MW-2 01108193 964.41 9.4 955.01
MW-2 02/10/93 964.41 8.02 956.39
MW-2 03131/93 964.41 7.93 956.48
I MW-2 04/26/93 964.41 7.64 956.77
MW-2 05124/93 964.41 7.47 956.94
MW-2 06/03/93 96441 734 95707
MW-2 07/12/93 964.41 6.3 958 11
MW-2 08126/93 964.41 6.27 958.14
I MW-2 09/16/93 964.41 6.35 958.06
MW-2 10/14/93 964.41 715 957.26
MW-2 11/26/93 964.41 7.23 957.18
MW-2 01/21/94 964.41 8.39 956.02
MW-2 05120194 964.41 8.63 955.78
I MW-2 06/09/94 96441 8.44 955.97 0.32
MW-2 07/08/94 964.41 8.47 955.94 1.23
MW-2 08/05194 964.41 7.96 956.45 0
MW-2 11/10/94 964.41 7.86 956.55 _0.02
MW-2 12106/94 964.41 7.90 956.51
I MW-2 05112/95 964.41 783 956.58 0.06
MW-2 06/26/95 964.41 7.79 956.62 0.03
MW-2 10112/95 964.41 10.58 953.83 0.23
MW-2 01/09/96 964.41 10.77 953.64 0.14
! I MW-2 05122/96 964.41 9.84 954.57 0.03
MW-2 08/24/96 964.41 9.18 955.23 0.23
MW-2 11/22/96 964.41 8.99 955.42 0.14
MW-2 02/11/97 964.41 10.4 954.01 0
MW-2 05/13/97 964.41 8.79 955.62 0
I MW-2 09/16/97 964.41 804 956.37 0
MW-2 12/09/97 964.41 8.33 956.08 0
MW-2 03/18/98 964.41 8 7~ 955.69 0
MW-3 09/09/87 963.94 9.n 954.17
I MW-3 10/13/87 963.94 10.05 953.89
MW-3 11/23/87 963.94 10.04 953.9 0.02
MW-3 03/18/88 963.94 1009 953.85
MW-3 07114/88 963.94 10.17 953.77
I MW-3 08/25/88 963.94 10.2 953.7 4
MW-3 10103188 963.94 1009 953.85
MW-3 10/12/88 963.94 10.29 953.65
MW-3 10/14/88 963.94 10.25 953.69
MW-3 12/09/88 963.94 1004 953.9
I MW-3 01/18/89 963.94 10.6 953.34
MW-3 02/23189 963.94 10.87 953.07 0.05
MW-3 04/05189 963.94 9.99 953.95 0.08
MW-3 04/21/89 963.94 10.04 953.9
I MW-3 05/10189 963.94 9.34 954.6
MW-3 06/07/89 963.94 9.81 954.13
MW-3 06/14/89 963.94 9.51 954.43
MW-3 07/07/89 963.94 9.76 954.18
MW-3 08/04/89 963.94 9.72 954.22
I MW-3 08/09189 963.94 9.93 954.01
MW-3 09104/89 963.94 9.62 954.32
MW-3 10/10/89 963.94 10.1 953.84
MW-3 11/03189 963.94 9.95 953.99
MW-3 11/20/89 963.94 9.94 954
I MW-3 03/12/90 963.94 10 953.94
MW-3 03/19/90 96394 989 95405
MW-3 03/23/90 963.94 10.13 953.81
MW-3 03/29/90 963.94 9.98 953.96
I MW-3 04/12/90 963.94 1008 953.86
MW-3 04/28/90 96394 9.26 954 68
MW-3 05/16/90 96394 9.34 954.6
MW-3 06/05/90 963 94 9 ~4 9547
I Page 3
I
Table 1
I Ground Water Elevation Data
E-Z Stop
Prior Lake. Minnesota
Delta No. A092-536-1
Top Of
I Casing Depth Ground
Elevation To Water Product
Well Date (feet ASL) Water Elevation Thickness
MW-3 07/10/90 963.94 9.1 954.84
MW-3 08/07190 963.94 9.03 954.91
I MW-3 09/13/90 963.94 9.33 954.61
MW-3 10104190 963.94 9.33 954.61
MW-3 11/02/90 963.94 9.36 954.58
MW-3 12/11/90 963.94 9.48 954.46
I MW-3 01/10191 963.94 10.2 953.74
MW-3 03121/91 963.94 9.75 954.19
MW-3 04119/91 963.94 9.55 954.39
MW-3 05/15/91 963.94 9.33 954.61
MW-3 06/20191 963.94 8.88 955.06
I MW-3 07/24/91 963.94 9.22 954.72
MW-3 08/18/91 963.94 9.07 954.87
MW-3 09/17/91 963.94 8.63 955.31
MW-3 10/24/91 963.94 9.14 954.8
I MW-3 11/21/91 963.94 8.55 95539
MW-3 12/18191 963.94 9.32 954.62
MW-3 12/31/91 963.94 9.35 954.59
MW-3 01/21/92 963.94 941 95453
MW-3 04/29/92 963.94 8.76 955.18
I MW-3 07/17/92 963.94 8.44 955.5
MW-3 08/07/92 963.94 72 95674
MW-3 09/08/92 963.94 721 956.73
MW-3 10/13/92 963.94 720 956.7 4
MW-3 11/05/92 963.94 8.17 955.77
I MW-3 12/11/92 963.94 8.83 955.11
MW-3 01/08/93 963.94 9.21 954.73
MW-3 02/10/93 963.94 943 954.51
MW-3 03/31/93 963.94 9.06 954.88
MW-3 04/26/93 963.94 9.15 954.79
I MW-3 05124/93 963.94 8.7 955.24
MW-3 06/03/93 963.94 8.74 955.2
MW-3 07/12/93 963.94 7.95 955.99
MW-3 08/26/93 963.94 7.91 956.03
I MW-3 09/16/93 963.94 8.03 955.91
MW-3 10/14/93 963.94 8.81 955.13
MW-3 11/26/93 963.94 8.71 955.23
MW-3 01/21/94 963.94 9.37 954.57
MW-3 OS/20/94 963.94 924 954.7
I MW-3 06/09/94 963.94 9.21' 954.73 NM
MW-3 07/08/94 963.94 9.12 954.82 NM
MW-3 08/05/94 963.94 9.39 954.55
MW-3 11/10/94 963.94 9.06 954.88 0
I MW-3 12/06/94 963.94 9.06 954.88
MW-3 05/12/95 963.94 8.85 955.09
MW-3 06/26/95 963.94 8.65 955 29
MW-3 10/12/95 963.94 10.07 953.87
MW-3 01/09/96 963.94 1070 953.24 0.01
I MW.3 OS/22/96 963.94 9.61 954 33
MW-3 08/24/96 963.94 974 954.2
MW-3 11/22/96 963.94 928 95466 001
MW-3 02/11/97 963.94 1014 953.8 0
MW-3 05/13/97 963.94 9.41 954.53 0
I MW-3 09/16/97 963.94 8.82 955.12 0
MW-3 , 2/09/97 963.94 918 954 76 0
MW-3 03/18/98 963.94 9.38 954.56 0
I MW-4 09/09/87 965.77 10.28 955.49
MW-4 10113/87 965.77 10.68 955.09
MW-4 11/23/87 965.77 10.91 954.86
MW-4 03/18/88 965.77 11.21 954.56
MW-4 07/14/88 965.77 10.93 954.84
I MW-4 08/25/88 965.77 10.98 954 79
MW-4 10/03/88 965.77 1104 954 73
MW-4 10/12/88 965.77 11.31 95446
MW-4 10/14/88 965.77 1152 954.25
MW-4 12/09/88 965.7i 11.09 954.68
I MW-4 01/18/89 965. 77 11.65 95412
MW-4 02/23/89 965.77 13.12 952.65 1.73
MW-4 04/05/89 . 965.77 12.46 953.31 1.74
I Page 4
I
Table 1
I Ground Water Elevation Data
E-Z Stop
Prior Lake. Minnesota
Delta No. A092-536-1
Top Of
I Casing Depth Ground
Elevation To Water Product
Well Date (feet ASL) Water Elevation Thickness
MW-4 04/21/89 965.77 12.45 95332 12
I MW-4 05/10/89 965.77 11 71 954 06 11
MW-4 06107/89 965. 77 11.76 954.01 125
MW-4 06114/89 965. 77 11.45 954.32 0.63
MW-4 07/07/89 965.77 11.33 954.44 07
MW-4 08104189 965.77 10.75 955.02 0.61
I MW-4 08/09/89 965.77 1111 954.66 0.71
MW-4 09/04189 965.77 11.35 954.42 0.62
MW-4 10/1 0/89 965.77 11.60 954.17
MW-4 11/03189 965.77 11.47 954.3 0.6
MW-4 11120/89 965.77 11.18 954.59 0.45
I MW-4 03/12/90 965.77 12.09 953.68 1.09
MW-4 03119/90 965.77 11.99 953.78 0.54
MW-4 03123l9O 965.77 12.13 953.64 0.57
MW-4 03129/90 965.77 11.91 953.86 0.56
I MW-4 04/12/90 965.77 11.97 9538 0.58
MW-4 04128190 965.77 11.65 954.12 0.50
MW-4 05116/90 96577 11.33 954.44 0.35
MW-4 06/05190 965.77 10.96 954.81 0.26
MW-4 07/10/90 965.77 9.45 956.32
I MW-4 08/07/90 965.77 8.4 957.37 0.13
MW-4 09/13/90 965.77 9.3 956.47 0.25
MW-4 10/04/90 96577 9.37 956.4 0.3
MW-4 11/02190 965.77 9.02 956.75
MW-4 12111/90 965.77 9.8 955.97
I MW-4 01/10/91 965.77 10.52 955.25 0.33
MW-4 03121/91 965.77 10.42 955.35
MW-4 04/19/91 965.77 10.46 955.31
MW-4 05/15/91 965.77 10.7 955.07 1.14
I MW-4 06120/91 965.77 9 956.77 0.58
MW-4 07124/91 965.77 9.78 955.99 0.82
MW-4 08116/91 965.77 9.9 955.87 079
MW-4 09/17/91 965. 77 9.83 955.94 081
MW-4 10124/91 965 77 1023 955.54 09
I MW-4 11121/91 965.77 918 956 59
MW-4 12/18/91 965 77 9.6 955.97 0.35
MW-4 01121/92 965.77 10.02 955.75 042
MW-4 04/29/92 965.77 9.26 956.51 0.11
MW-4 07/17/92 965.77 7.82 95795
I MW-4 08/07/92 965.77 863 957.14 0.41
MW-4 09/08/92 965.77 8.63 957.14 0.31
MW-4 10/13/92 965.77 8.61 957.16 0.21
MW-4 1 1/05/92 965.77 8.74 95703 0.22
I MW-4 12111/92 965.77 10.25 955.52 0.09
MW-4 01/08/93 965.77 9.41 956.36 0.16
MW-4 02/10/93 965.77 9.87 955.9
MW-4 03/31/93 965.77 10.25 955.52 0.2
MW-4 04126/93 965.77 9.65 956.12 0.1
I MW-4 05124/93 965.77 8.66 957.11 0.57
MW-4 06/03/93 965.77 8.41 957.36 0.36
MW-4 07/12/93 965.77 7.87 9579
MW-4 08/26/93 965.77 8.31 957.46
MW-4 09/16/93 965.77 8.41 957.36
I MW-4 10/14/93 965. 77 8.83 956.94 0
MW-4 11126/93 965.77 839 957.38 0
MW-4 01/21/94 965.77 9.69 956.08 0.01
MW-4 05120/94 965.77 9.21 956.56
I MW-4 06/09/94 965.77 7.95 95782 0.13
MW-4 07/08/94 965.77 8.24 95753 NM
MW-4 06105194 965.77 8.13 957 64
MW-4 11/10194 965.77 762 958.15 0
MW-4 12/06/94 965. 77 770 958. 07
I MW-4 05112/95 965.77 8.16 95761 0.11
MW-4 06/26/95 965. i7 8.28 957 49 0.10
MW-4 10/12/95 965 77 10.11 955.66 0.13
MW-4 01/09/96 965. 77 1090 954.87 0.63
MW-4 OS/22/96 965. 77 1043 955 34
I MW-4 08124/96 965 77 9.38 956 39
MW-4 11/22/96 965.77 902 95675 0.01
MW-4 02/11/97 965.77 10.5 955.27 0.5
I Page 5
I
Table 1
I Ground Water Elevation Data
E-Z Stop
Prior Lake, Minnesota
Delta No. A092-536-1
Top Of
I Casing Depth Ground
Elevation To Water Product
Well Date (feet ASL) Water Elevation Thickness
MW-5 05122196 957.64 6.86 950.78
I MW-5 08124/96 957.64 9.61 948.03
MW-5 11122196 957.64 6.63 951.01
MW-5 02/11/97 957.64 8.99 948.65 0
MW-5 05/13197 957.64 7.35 950.29 0
MW-5 09/16197 95764 7.15 950.49 0
I MW-5 12/09/97 957.64 7.81 949.83 0
MW-5 03118198 957.64 7.28 950.36 0
MW-6 08105194 NA 4.64 0
MW-6 11/10194 NA 4.33 0
I MW-6 12106194 NA 4.44
MW-6 05112195 NA 4.22
MW-6 06126195 NA 4.26
MW-6 10112196 NA 5.39
I MW-6 05122196 NA 472
MW-6 08124196 NA 5.15
MW-6 11122196 NA 5.05
MW-6 02111/97 NA 5.48 0
MW-6 05113197 NA 459 0
I MW-6 09/16/97 NA 39 0
MW-6 12/0919 7 NA 456 0
MW-6 03/18198 NA 4.49 0
MW-7 08/05194 NA 8.90 1.13
I MW-7 11/10194 NA 795 0.7
MW-7 12/06/94 NA NM 0.3
MW-7 10112/95 NA 12.51 2.22
MW-7 01/09196 NA 12.31 1.61
I MW-7 05122196 NA 9.48
MW-7 08124/96 NA 9.02
MW-7 11122196 NA 8.62
MW-7 02111197 NA 9.84 0.1
MW-7 05/13/97 NA 8.33 0
I MW-7 09/16197 NA 754 0
MW-7 12/09/97 NA 8.13 0
MW-7 03/18/98 NA 9.81 0
RW-l 09/09/87 963.26 105 952.76
I RW-l 10113/87 963.26 10.53' 952.73 0.13
RW-l 11/23/87 963.26 10.58 952.68 0.01
RW-l 03/18/88 963.26 10.57 952.69
RW-l 07114188 963.26 10.46 952.8
I RW-l 08125188 963.26 10.5 952.76
RW-l 10103188 963.26 10.39 952.87 0.02
RW-l 10112/88 963.26 10.41 952.85
RW-l 10/14/88 963.26 10.42 952.84
RW-l 12/09/88 963.26 10.49 952.77
I RW-1 01/18/89 963.26 10.42 952.84
RW-l 02/23/89 963.26 10.49 952.77
RW-l 04/05/89 963.26 10.39 952.87
RW-l 04/21/89 963.26 10.41 952.85
RW-l 08/09/89 963.26 10.45 952.81
I RW-1 09/04189 963 26 1052 952.7 4
RW-l 10/10189 963.26 10.49 952.77
RW-1 11/03/89 963.26 10.4 952.86
RW-l 11120189 963.26 10.31 95295
I RW-l 03/12190 963.26 11.98 951.28
RW-l 03/19/90 963.26 14.36 948.9
RW-l 03/23190 963.26 14.56 948.7
RW-l 03129/90 963.26 14.4 948.86
RW-l 04/12/90 963.26 14.32 948.94
I RW-l 04/28/90 963.26 12.29 950.97
RW-l 05116/90 963.26 1461 948. 65
RW-l 06/05190 963.26 14.44 948.82
RW-l 07/10190 963.26 10.38 952.88
RW-l 08/07/90 96326 12.79 950.47
I RW-1 09/13/90 963.26 14.45 948.81
RW-l 10104/90 963.26 1484 948.42
RW-1 11/02/90 963.26 10.79 952.47
I Page 7
I
Table 1
I Ground Water Elevallon Data
E-Z Stop
Prior Lake. Minnesota
Delta No. A092-536-1
I TopOl
Casing Depth Ground
Elevation To Water Product
Well Date (feet ASL) Water Elevation Thickness
RW-1 12/11/90 963.26 10.45 952.81
I RW-1 01/10191 963.26 10.58 952.68
RW-1 03/21/91 963.26 10.43 952.83
RW-1 04119/91 963.26 14.36 948.9
RW-1 05/15/91 963.26 14.26 949
RW-1 06120/91 963.26 14.48 948.78
I RW-1 07/24/91 963.26 14.42 948.84
RW-1 08116/91 963.26 14.75 948.51
RW-l 09/17/91 963.26 11.77 951.49
RW-l 10124/91 963.26 10.34 952.92
I RW-l 11/21/91 963.26 10.32 952.94
RW-1 12/18/91 963.26 14.35 948.91
RW-1 01/21/92 963.26 14.29 948.97
RW-l 04/29/92 963.26 14.43 948.83
RW-l 07117/92 963.26 9.99 953.27 0.03
I RW-1 08107/92 963.26 9.5 953.76
RW-l 09108192 963.26 9.55 953.71
RW-l 10113/92 963.26 12.71 950.55 0.05
RW-1 11105/92 963.26 10.07 953.19 0.06
RW-l 12111192 963.26 11.72 951.54
I RW-l 01/08/93 963.26 15.78 947.48 0
RW-l 02/10193 963.26 14.33 948.93
RW-1 03131/93 963.26 14.34 948.92
RW-l 04/26/93 96326 14.46 948.78
I RW-1 OS/24193 963.26 10.89 952.37
RW-1 06/03193 963.26 906 954.2
RW-l 07112193 963.26 8.88 954.38
RW-l 08126193 963.26 1198 951.28
RW-1 09/16193 963.26 1001 953.25
I RW-l 10/14/93 963.26 14.32 948.94
RW-1 11126/93 963.26 9.39 953.87
RW-1 01/21194 963.26 9.37 953.89
RW-1 05120/94 963.26 14.46 948.8
RW-1 06/09/94 963.26 14.37 948.89 0
I RW-1 07/08194 963.26 14.95 948.31 0.08
RW-l 08105/94 963.26 14.95 948.31 0.31
RW-1 11/10/94 963.26 14.17 949.09 0.05
RW-l 12/06/94 963.26 14.95 948.31 0.41
I RW-l 05/12/95 963.26 9.36 953.9 0.06
RW-l 06/26/95 963.26 9.41 953.85 0.08
RW-l 10/12/95 963.26 10.00 953.26 NM
RW-l 01109196 963.26 10.31 952.95 0.01
RW-1 01/16196 963.26 14.21 949.05 0
I RW-1 01/25/96 963.26 10.1 953.16 sheen
RW-1 03/18/96 963.26 9.93 953.33 0.01
RW-l 04/02/96 963.26 962 953.64 sheen
RW-l 04/15/96 963.26 14.42 948. 84 sheen
RW-1 05/15/96 963.26 13.6 949.66 sheen
I RW-l 06/17/96 963.26 9.23 954.03 sheen
RW-l 07/16/96 963.26 13.6 949.66 0.01
RW-l 08121196 963.26 14.12 949.14 sheen
RW-l 09/23/96 963.26 141 949.16 sheen
I RW-1 02/20/97 963.26 9.81 953.45 0
RW-l 03/28/97 963.26 16.01 947 25 0.11
RW-l 04/15/97 963.26 8.64 954 62 0
RW.1 06/27/97 963.26 8.67 954.59 0
RW-1 07/31197 963.26 784 955 42 0
I RW-2 09109/87 966.42 10.77 955.65
RW-2 10/13187 966.42 10.97 955.45 0.07
RW-2 111:?3187 966 42 1132 9551 001
RW-2 03118/88 966.42 11.61 95481 0.06
I RW-2 07/14/88 966.42 11.34 955.08 0.03
RW-2 08/25/88 966.42 11.38 955.04
RW-2 10103/88 966.42 11.67 954.75
RW-2 10/12/88 966.42 12.65 953.77 0.24
I RW-2 10/14/88 966.42 15.84 950.58 0.24
RW-2 12/09188 966.42 1166 954.76 02
RW-2 01/18/89 966.42 12.16 954.26 0.04
RW-2 02/23189 966.42 12.75 953.67 0.41
I Page 8
I
Table 1
I Ground Waler Bevalion Dala
E-Z Stop
Prior Lake, Minnesota
Delta No. A092 -536-1
I Top Of
Casing Depth Ground
Elevation To Water Product
Well Date (feet ASL) Water Elevation Thickness
RW-2 04105189 966.42 11.72 954.7 0.15
I RW-2 04121/89 966.42 14.22 952.2 0.3
RW-2 05110189 966.42 13.87 952.55 0.5
RW-2 05124189 966.42 11.2 955.22 0.09
RW-2 06107189 966.42 16.23 950.19 0.5
RW-2 06114/89 966.42 16.25 950.17 0.35
I RW-2 08104189 966.42 10.14 956.28 0.05
RW-2 08109189 966.42 12.32 954.1 0.05
RW-2 09104189 966.42 15.53 950.89 0.25
RW-2 10110189 966.42 15.16 951.26
RW-2 1 1103189 966.42 13.38 953.04 0.4
I RW-2 1 1120189 966.42 11.36 955.06 0.05
RW.2 03112/90 966.42 1048 95594
RW-2 03119190 966.42 15.56 950.86 0.31
RW-2 03123190 966.42 16.6 949.82 0.09
I RW-2 03129190 966.42 15.98 950.44 0.25
RW-2 04112190 966.42 16.22 950.2 0.12
RW-2 04128190 966.42 16.38 950.04 0.01
RW-2 05116190 966.42 16.46 949.96
RW-2 06lO5I90 966.42 16.5 949.92 0.49
I RW-2 07110190 966.42 10.81 955.61 0.08
RW-2 08107190 966.42 9.5 956.92 1.1
RW-2 09113190 966.42 16.7 949.72 0.77
RW-2 10104190 966.42 14 952.42 12
RW-2 11/02190 966.42 9.51 956.91 0.12
I RW-2 12111190 966.42 12.74 953.68 019
RW-2 01110191 966.42 11.81 954.61
RW-2 03121/91 966.42 10.69 955.73
RW-2 04119/91 966.42 15.93 950.49
I RW-2 05115191 966.42 16.83 949.59 0.31
RW-2 0612019 1 966.42 10.69 955.73 0.29
RW-2 07124191 966.42 15.81 950.61 0.33
RW-2 08116/91 966.42 16.5 949.92 0.05
RW-2 09117/91 966.42 16.71 949.71 0.49
I RW-2 10124191 966.42 16.44 949.98 0.27
I RW-2 11/21191 966.42 9.40 95702
I RW-2 12/18191 966.42 16.51 949.91 0.55
RW-2 01121192 966.42 16.18 950.24 0.24
RW-2 04129192 966.42 16.44 949.98 0.93
I RW-2 07117192 966 42 825' 95817 009
RW-2 08107192 966.42 1553 950.89 01
RW-2 09/08192 966.42 8.43 957 99 0.08
RW-2 10113192 966.42 1473 95169 0.58
I RW-2 11105192 966.42 14.32 952.1 0.56
RW-2 12111192 966.42 16.48 949.94
RW-2 01108193 966.42 1453 951.89 0
RW-2 02110/93 966.42 16.22 950.2 0.02
RW-2 03131/93 966.42 16.69 949.73
I RW-2 04126/93 966.42 16.69 949.73
RW-2 05124/93 966.42 9.54 956.88
RW-2 08lOJ/93 966.42 9.83 956.59
RW-2 07112/93 966.42 14.52 951.9 0.44
RW-2 08126/93 966.42 14.73 951.69 0.37
I RW-2 09116/93 966.42 15.06 951.36 0.13
RW-2 10114193 966.42 16.7 949.72 0.05
RW-2 11126/93 966.42 15.9 950.52 0.03
RW-2 01121/94 96642 10.01 956.41 0.04
I RW-2 05120/94 966.42 1333 953.09 0.13
RW-2 06109/94 966.42 16.39 950. OJ 017
RW-2 07108194 966.42 16.66 949.76 0.11
RW-2 08lO5I94 966.42 16.66 949.76 0.11
RW-2 11110/94 966.42 12.68 953.74 0.03
I RW-2 12106/94 966.42 15.97 950.45 101
RW-2 05112/95 966.42 15.96 950.46 016
RW-2 06126/95 966.42 14.99 951.43 0.10
RW-2 10112/95 966.42 12.40 954.02 0.13
I RW-2 01/09196 966.42 12.73 953.69 0.03
RW-2 01116196 966.42 15.9 950.52 0.12
RW-2 01125/96 96642 15.59 950.83 0.16
I Page 9
I
Table 1
I Ground Water Elevation Data
E-Z Stop
Prior Lake. Minnesota
Delta No. A092-536-1
Top Of
I Casing Depth Ground
Elevation To Water Product
Wen Date (feet ASL) Water Elevation Thickness
RW-2 03118/96 966.42 13.25 953.17 0.83
I RW-2 04102/96 966.42 16.15 950.27 0.13
RW-2 04/15196 966.42 16.58 949.84 0.19
RW-2 05115196 966.42 16.62 949.8 0.17
RW-2 06117/96 966.42 10.94 955.48 0.04
RW-2 07/16/96 966.42 16.48 949.94 0.18
I RW-2 08121/96 966.42 16.02 950.4 0.12
RW-2 09/23/96 966.42 15.68 950.74 0.17
RW-2 02120197 966.42 15.26 951.16 0
RW-2 03128/97 966.42 13.51 952.91 0
I RW-2 04/15/97 966.42 13.26 953.16 0
RW-2 06127/97 966.42 11.35 955.07 0
RW-2 07/31/97 966.42 9.43 956.99 sheen
RW-3 Well was Installed on 10113/95
I RW-3 01104/96 966.42 10.40 956.02 0.26
RW-3 01/09/96 966.42 10.64 955.78 0.18
RW-3 01/16/96 966.42 21.42 945 0.61
RW-3 01/25/96 966.42 22.33 944 09 0.69
RW-3 03107/96 966.42 11.62 954.8 122
I RW-3 03/18/96 966.42 11.10 955.32 0.73
RW-3 04102/96 966.42 22.22 944.2 0.6
RW-3 04/15/96 966.42 22.08 944.34 0.5
RW-3 05/15/96 966.42 21.35 944.47 -0.12
I RW-3 06/17/96 966.42 8.42 958 film
RW-3 07/19/96 966.42 21.96 944.46 0.02
RW-3 08/21/96 966.42 20.93 945.49 film
RW-3 09/23/96 966.42 20.52 945.9 0.02
RW-3 02/20197 966.42 14.79 951.63 0
I RW-3 03128/97 966.42 21.46 944.96 0.16
RW-3 04115/97 966.42 21.00 945.42 0.23
RW-3 06127/97 966.42 19.80 946.62 0.04
RW-3 07/31/97 966.42 7.25 959. 17 0.02
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Table 2
Ground Water Chemistry
E-Z Stop
Prior Lake, Minnesota
Delta No. A092-536-1
MW-1
Benzene
09/09/87 970
1 0/14/88 2700
11/03/89 1300
05/16/90 750
11/02/90 250
05/15/91 28
12/18/91 47
04/29/92 32
07/17/92 41
11/05/92 25
01/08/93 33
04/26/93 16
07/12/93 19
10/14/93 9.9
01/21/94 2.3
08/05/94 4.6
11/1 0/94 3
01/11/95 2.4
05/12/95 3.2
02/26/96 130
OS/22/96 40
08/20/96 12
11/22/96 60
05/13/97 20
09/16/97 20
12/09/97 19
03/18/98 22
Toluene
Analytical Parameters
y-
benzene
IJg/L
Xylenes
IJglL
)):1):OOQ: ....
47
2100
350
65
0.83
3.9
9.1
8
4.6
9.2
6.8
9.1
3.4
1.9
0.05
4
2.7
1.4
1.5
48
6.8
<6.3
33
16
3.3
<1.5
<7.5
8
360
230
91
49
24
34
16
9.5
20
25
23
24
8.1
16
8.9
3.6
4.7
38
13
8.5
31
19
6.4
6.1
6.9
IJg/L
.. ....1.0.0.. 00..........
. . . . . . . . .. . . . . . . . .
r}~:}: .:;:.i..=:-~ .:.-. ".//::::;::::::
770
2100
1700
1500
5.1
420
200
26
120
860
130
180
92
68
40
31
14
14
20
25
3.8
<13
30
23
5.8
4.9
<13
TPH/GRO
8500
29000
18000
19000
5800
5400
4100
3600
2700
2300
1700
3800
4800
3800
2000
3300
1400
1000
1400
3900
2200
1600
3600
2400
2100
2100
2000
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Table 2
Ground Water Chemistry
E-Z Stop
Prior Lake, Minnesota
Delta No. A092-536-1
MW-2
Benzene
g1L
09/09/87 NO
10/14/88 NO
11/03/89 NO
05/16/90 NO
11/02/90 NO
05/15/91 NO
12/18/91 NO
04/29/92 NO
07/17/92 NO
11/05/92 NO
01/08/93 1.9
04/26/93 NO
07/12/93 NO
10/14/93 NO
01/21/94 NO
OS/22/96 9800
08/20/96 8800
11/22/96 7700
05/13/97 3000
09/16/97 2900
12/09197 7700
03/18/98 8800
Toluene
Analytical Parameters
y-
benzene
\Jg/L
Xylenes
\Jg/L
/\:..4/000::............ .
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
24000
23000
23000
15000
9900
13000
14000
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
2500
2300
2500
22000
, 1400
1700
1700
\JglL
................4D/OOO..... .
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
4.2
NO
NO
NO
NO
15000
18000
21000
21000
15000
16000
16000
TPH/GRO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
78000
83000
76000
69000
66000
74000
60000
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Table 2
Ground Water Chemistry
E-Z Stop
Prior Lake, Minnesota
Delta No. A092-536-1
MW-3
Benzene
~gJL
09/09/87 300
1 0/14/88 2000
11/03/89 780
05/16/90 900
11/02/90 210
05/15/91 320
12/18/91 87
04/29/92 78
07/17/92 43
11/05/92 31
01/08/93 46
04/26/93 260
07/12/93 53
10/14/93 100
01/21/94 ND
08/05/94 3500
11/10/94 58
01/11/95 55
05/12/95 91
02/16/96 170
OS/22/96 650
08/20/96 500
11/22196 700
05/13/97 250
09/16/97 490
12/09/97 11 0
03/18/98 210
Toluene
Analytical Parameters
y-
benzene
~g/L
Xylenes
~gJL
........t..O"'O.
::::{:::r:::::: ::::.:: ...;;!.; }{
290
1300
350
600
220
280
110
110
67
68
59
180
99
32
22
190
52
50
110
65
240
130
120
26
210
80
140
34
250
200
180
210
37
63
42
21
26
140
75
73
21
120
72
72
110
290
450
200
280
130
240
95
280
~gJL
.. ,<10::000::>
4400
2200
890
1600
780
540
310
310
220
110
150
580
340
160
76
220
152
170
410
880
1000
410
780
310
870
300
830
TPH/GRO
34000
31000
9700
24000
7800
820
6400
3700
3500
1200
920
3600
5200
1400
3700
6400
1200
4600
2000
5100
6000
3100
4000
2000
4700
2100
3600
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Table 2
Ground Water Chemistry
E-Z Stop
Prior Lake, Minnesota
Delta No. A092-536-1
MW-4
Benzene
Analytical Parameters
Toluene b Y - Xylenes
enzene
IJglL
..........700.
TPH/GRO
10/14/88 18000 17000 1500 14000 190000
11/02/90 14000 22000 3800 35000 270000
11/10/94 15000 24000 3200 27000 140000
05/13/97 17000 19000 3200 22000 11 0000
09/16/97 15000 23000 3000 21000 11 0000
12/09/97 15000 25000 3000 21000 120000
03/18/98 17000 26000 3400 23000 100000
06/12/98 15000 23000 31000 21000 90000
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Table 2
Ground Water Chemistry
E-Z Stop
Prior Lake, Minnesota
Delta No. A092-536-1
MW-5
Analytical Parameters
Benzene Toluene y- Xylenes TPH/GRO
benzene
jJg/L jJg/L jJg/L
.... ^{()(J() ... ..... in..........tO/QOO<.
. -.. ... .........
..... .. _ . ...H.....
^ . \:;:;::::,.}.::.:}...::.::::::::::>>:-:"
09/09/87
12/09/88 NO NO NO NO NO
11/03/89 NO 1 NO NO NO
05/16/90 NO NO NO NO NO
11/02/90 NO NO NO NO NO
05/15/91 NO NO NO NO NO
12/18/91 NO NO NO NO NO
04/29/92 NO NO NO NO NO
07/17/92 NO NO NO NO NO
11/05/92 NO NO NO NO NO
01/08/93 NO NO NO NO NO
04/26/93 NO NO NO NO NO
07/12/93 NO NO NO NO NO
10/14/93 NO NO NO NO NO
01/21/94 NO NO NO NO NO
08/05/94 NO NO NO NO NO
11/10/94 NO NO NO NO NO
01/11/95 NO NO NO NO NO
05/12/95 <0.40 . <0.80 <0.30 <1.0 <20
02/16/96 <0.70 <2.5 , <2.5 <4.6 <33
OS/22/96 <0.60 <1.3 <0.55 <2.7 <65
08/20/96 <0.70 <2.5 <2.5 <4.6 <33
11/22/96 <0.60 <1.3 <0.55 <2.7 <65
05/13/97 <0.60 2.1 <0.55 2.9 <40
09/16/97 <0.60 <1.5 <0.55 <2.7 <40
12/09/97 <0.60 <1.5 <0.55 <2.7 <40
03/18/98 <0.60 <1.5 <0.55 <2.7 <40
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Table 2
Ground Water Chemistry
E-Z Stop
Prior lake, Minnesota
Delta No. A092-536-1
MW~
Analytical Parameters
Benzene Toluene y- Xylenes TPH/GRO
benzene
~glL
11/10/94 9500 2900 730 1200 23000
01/11/95 10000 2500 870 1900 25000
05/12/95 12000 3000 860 2600 28000
02/16/96 11000 4700 900 1600 31000
OS/22/96 12000 5700 1000 3000 33000
08120/96 14000 8800 1200 4200 42000
11/22/96 14000 10000 1600 5400 39000
05/13/97 14000 14000 1700 7900 57000
09/16/97 9600 8800 1100 5300 43000
12/09/97 10000 11 000 1500 7000 56000
03/18/98 13000 12000 1800 8900 53000
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Table 2
Ground Water Chemistry
E-Z Stop
Prior Lake, Minnesota
Delta No. A092-536-1
MW-7
Benzene
Date Sampled IJg/L
....:::::rHR~?:/::/ ..
OS/22/96 4400
05/13/97 3500
09/16/97 8000
12/09197 7900
03/18/98 7400
06/12/98 1300
Toluene
Analytical Parameters
Ethyl-
benzene
IJg/L
Xylenes
IJgJL
...'4..000..........
:ft1::i~:..:,.,:._.:.:~..{~{::::::::::
1200
500
380
680
820
79
970
190
<28
21
21
<28
IJg/L
........ ."'.00. 0.........
<;0:;1<4 ,.. .....}}}}
6100
2600
480
950
1100
210
TPH/GRO
IJg/L
440000
210000
53000
18000
14000
3600
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",.
SCOTT COUNTY
COMMUNITY DEVELOPMENT DIVISION
ENVIRONMENTAL HEALTH DEPARTMENT
GOVERNMENT CENTER A 102
200 FOURTH AVENUE WEST
SHAKOPEE, MN 55379-1220
(612) 496-8177 Fax: (612) 496-8496
June 24, 2000
KRISTIN WALCH
PEER ENV & ENG
7710 COMPUTER AVE SUITE 101
MINNEAPOLIS MN 55435
Dear Ms. Walch:
This letter is in response to your request for information on environmental concerns in the one-
half mile area near State Hwy. 13 and Toronto Ave. in the City of Prior Lake as described on
the map you provided to me. The concerns we know about are as follows:
1. Enclosed is a list of hazardous waste generators licensed by Scott County. There may be
additional generators of hazardous waste in this area, but they are not licensed by the
County at this time.
2. For information on above ground and under ground storage tanks, call the Minnesota
Pollution Control Agency (MPCA) at 651-297-8679.
3. Hazardous material or petroleum spills:
A. In April 1989, the Scott County Highway Departmentdiscovered an underground
storage tank (UST) in the road right-of-way during the construction of County Road
21 in the City of Prior Lake. The UST was located immediately north of County Road
21 and just to the east of Main Avenue S,E. The property was purchased from a
railroad company that operated there until the 1970s. Some contamination was
found during the tank excavation, however, the MPCA did not require any additional
work at the site (MPCA site ID# LEAK00001 088). Call me for more information.
B. To the best of our knowledge, the MPCA is still working with Crown Coco/EZ Stop of
Prior Lake regarding a tank release. MPCA site ID# LEAK00000180. This business
is located at 16735 Franklin Trail SE. There were a number of reported releases at
this gasoline station in the 1980s and 1990s. Contact the MPCA for more
information.
C. We were copied by the MPCA on two UST petroleum spills. In both cases, we
received the MPCA's first standard notification letter in October 1998, followed by
letters to each dated letter November 8, 1999 because the responsible party had not
responded. No other information is known about the sites. The sites are:
Prior Lake Police Annex. MPCA site 10# LEAK00012015. Located on Dakota
St.
City of Prior Lake. MPCA site 10# LEAK00011911. Located at 16200 Eagle
Creek Ave. SE.
An Equal Opportunity/Safety Aware Employer
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Page 2
D. We have received "no action letters" from the MPCA for the following companies:
Grainwood Elementary School. MPCA site 10# LEAK00007033. Located at
5061 Minnesota St. SE.
Holiday Station Store #198. MPCA site 10# LEAK00009748. Located at 16800
Duluth Ave. SE.
Prior Lake Amoco. MPCA site 10# LEAK00000491. Located at 4805 Dakota St.
SE.
Scott Rice Telephone Company. MPCA site 10# LEAK00005355. Located at
4690 Colorado St. SE.
T J's Tire & Towing. MPCA site 10# LEAK00005428. Located at 16675 Franklin
Trail SE.
4. Hazardous material storage: Call the Prior Lake Fire Chief at 952-447-4230, or the
Minnesota Emergency Response Commission at 651-297-7372.
5. Hazardous waste disposal sites: Our Office is not aware of any hazardous waste disposal
sites in this area.
6. Operating or closed landfills: There are no solid waste landfills in this area that are, or have
been, licensed by Scott County. However, there is one dump located to the north of
Dakota St. SE. and to the west of Main Ave. SE. The dump closed in the mid 1980s. We
have only a limited amount of information about this dump, although a large variety of solid
and liquid wastes were reportedly dumped there'., We have no evidence of any
groundwater contamination resulting from the dump.
7. Soil or groundwater contamination: We are not aware of any soil or groundwater
contamination in this area other than what may have resulted from the releases noted in
item 3. above.
The information provided herein is based on Office records and staff recall since 1978. There is
very little information on file regarding problems of this nature prior to 1978. You may be able
to obtain additional information by calling the City of Prior Lake at 952-4472-4230.
Please call me at 952-496-8352 if you have any questions.
~~?J~
Peter M. Schmitt
Environmental Health
Enclosures
~
6/26/00
lCOTT COUNTY LICENSED HAZARDOUS WASTE GENERATORS AND WASTE STREAMS
.he list of generators below are in order by generator name. Township, Range and Sectional information is located
anmediately above each generator name, the site address is below the name. Waste amounts are either actual
amounts reportedly generated for calendar year 1999, or estimated annual amounts if the generator was first
_censed in 2000.
114N 22W 02
A-1 RADIATOR
16309 MAIN AVE SE
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H1
H2
H3
H4
H5
H6
H7
H8
01
02
o Gallons
20 Gallons
o Units
o Gallons
o Gallons
2 Units
10 Units
5 Gallons
3 Gallons
o Units
MINERAL SPIRITS
PAINT THINNER
PAINT BOOTH ARRESTORS
TEST TANK SLUDGE
BOIL OUT LIQUID
LEAD ACID BATTERIES
FLUORESCENT LAMPS
USED ANTIFREEZE
USED OIL
USED OIL FILTERS
114N 22W 01
APEX GRAPHICS INC
5500 COTTONWOOD LANE SUITE 100
H1
H2
H3
H4
H5
1 Gallons
650 Units
25 Pounds
25 Gallons
15 Units
SPENT FIXER
SOLVENT CONTAMINATED RAGS
SCRAP FILM
WASTE INKS/SOLVENTS
FLUORESCENT LAMPS
114N 22W 02
BRAD HANSON'S PRO FINISHERS
16117 MAIN AVE SE
H1
H2
H3
111 Gallons PAINT RELATED WASTE
14 Units PAINT BOOTH ARRESTORS
12 Units FLUORESCENT LAMPS
114N 22W 01
BUCKINGHAM COMPANIES
5980 CREDIT RIVER RD SE
H1
H2
01
02
o Units
195 Units
3980 Gallons
275 Gallons
114N 22W 02
CARLSON, DR SCOTT 0 DDS
4667 DAKOTA ST SE
H1
H2
H3
H4
H5
8 Gallons
50 Units
1 Pounds
5 Pounds
6 Units
FLUORESCENT LAMPS
LEAD ACID BATTERIES
USED OIL
USED OIL FILTERS
PHOTO FIXER
PHOTO FILM
WASTE AMALGAM
LEAD FOIL
FLUORESCENT LAMPS
I H3 10 Units FLUORESCENT LAMPS
114N 22W 02
OUTDOOR POWER HOUSE
I 16991 MUSHTOWN RD SE
H1 24 Gallons MINERAL SPIRITS
I H2 5 Units lEAD ACID BATTERIES
H3 2 Units FLUORESCENT LAMPS
01 5 Gallons USED Oil
I 114N 22W 02
PARK DENTAL PRIOR LAKE
I 16705 FRANKLIN TRl SE
H1 5 Pounds SCRAP AMALGAM
H2 32 Gallons X-RAY FIXER
I H3 29 Pounds lEAD FOIL
H4 4 Pounds X-RAY FILM
H5 10 Pounds SCRAP AMALGAM-VACUUM SYS.
I 114N 22W 02
PEARSON'S PRIOR LAKE AUTO BODY
I 16111 MAIN AVE SE
H1 32 Gallons PAINT RELATED WASTE
H2 10 Units lEAD ACID BATTERIES
I H3 12 Units FLUORESCENT LAMPS
H4 10 Units PAINT BOOTH ARRESTORS
H5 40 Gallons WASTE THINNER
I 114N 22W 01
PHILLIPS & TEMRO INC
;1 5380 COTTONWOOD LN SE
H1 o Gallons PAINT WASTE
H2 13 Units FLUORESCENT LAMPS
I N1 o Gallons PAINT BOOTH ARRESTORS
01 10 Gallons USED Oil
I 114N 22W 02
PRIOR LAKE AMOCO
4805 DAKOTA ST SE
I H1 10 Gallons MINERAL SPIRITS
H2 o Gallons CARBURETOR CLEANER
H3 155 Units lEAD ACID BATTERIES
I H4 o Gallons USED ANTIFREEZE
H5 o Units FLUORESCENT LAMPS
01 2975 Gallons USED OIL
I 02 3000 Units USED Oil FIL TERS
114N 22W 01
I PRIOR LAKE MACHINE INC
16801 INDUSTRIAL CIR SE
H1 35 Gallons MINERAL SPIRITS
I H2 o Units LEAD ACID BATTERIES
H3 184 Units FLUORESCENT LAMPS/HID
H4 31 Units PCB LAMP BALLAST
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114N 22W 02
VALLEY SIGN & SILKSCREEN CO
16511 DULUTH AVE SE
H1 1 Gallons INK RELATED WASTE/SLUDGE
H2 4 Units FLUORESCENT LAMPS
114N 22W 02
VELlSHEK AUTO SALES
16661 HWY 13 S
H1
H2
H3
H4
H5
01
02
78 Gallons
o Pounds
61 Units
37 Units
o Gallons
1160 Gallons
2000 Pounds
MINERAL SPIRITS
CARBURETOR CLEANER
LEAD ACID BATTERIES
FLUORESCENT LAMPS
USED ANTIFREEZE
USED OIL
USED OIL FILTERS
114N 22W 02
WRECK-A-MENDED AUTO BODY
16783 TORONTO AVE SE
H1 90 Gallons PAINT RELATED WASTE
H2 0 Units PAINT BOOTH ARRESTORS
H3 0 Units FLUORESCENT LAMPS
5
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CORPORATE PROFILE
Peer Environmental & Engineering Resources, Inc. (PEER) is a specialized consulting firm with
demonstrated capabilities in providing environmental engineering and related services to a broad
base of clients. PEER offers comprehensive services in real estate environmental site
assessments, petroleum and chemical storage tanks, soil and ground water remediation and solid
and hazardous waste management. Services are provided to municipal, industrial, institutional
and governmental clients.
PEER has participated in the development of national standards for the conduct of
Environmental Site Assessments, has been qualified by major lenders and national institutions,
and actively monitors legislative developments and related issues. PEER is committed to
performing Environmental Site Assessments in accordance with the recognized industry standard
of care to ensure that our client's environmental due diligence is satisfied.
PEER also provides information seminars and formal training to various associations and clients
on environmental site assessments and related topics. We have assisted lenders with training and
the development of policies and procedures for their environmental risk program required by the
Federal Deposit Insurance Corporation (FDIC). The feedback received from this experience
provides PEER with greater insight and understanding of the special needs and concerns of
lending institutions and other parties to a transaction.
Special concerns, such as asbestos, lead paint and radon can be fully addressed for clients whose
properties present elevated risk due to age, type of construction or occupancy issues. PEER can
perform screening sampling and analysis during the initial site visit, or complete a
comprehensive survey, prepare abatement plans and specifications, and monitor repair and
removal activities. Our experience includes development of Operations and Maintenance
programs to assist clients in properly maintaining. asbestos in-place and meeting financing
covenants.
PEER has significant experience working with the MPCA's Voluntary Investigation and Cleanup
Program. We have assisted clients in securing various no-action, site closure and assurance
letters, and where applicable reimbursement for cleanup costs from state funding programs -
accomplishments that have been instrumental to the success of many transactions and
development projects. The experience of managing projects under the authority of CERCLA,
RCRA and various other federal and state law and regulations enables our professionals to apply
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STEPHEN T. JANSEN, M.S.
VICE PRESIDENT
EDUCATION
Bachelor of Arts Degree, 1983, Geology, College of St.
Thomas, St. Paul, Minnesota.
Master of Science Degree, 1987, Geology, Idaho State
University, Pocatello, Idaho.
Continuing Education Courses in soil and ground water
sampling methods, ground water and fate and transport
modeling, well design and construction, and remediation
technologies.
REGISTRA TlONS/CERTlFICA TlONS
Registered Professional Geologist, Minnesota.
Registered Professional Geologist, Wisconsin.
OSHA 40 Hour Hazardous Waste Operations Training (40
CFR 1910.120).
PROFESSIONAL AFFILIATIONS
Minnesota Ground Water Association.
Association of Ground Water Scientists and Engineers.
PRESENTATIONS AND PUBLICATIONS
Key Speaker, "Brownfield Reclamation",
Recycling Association of America and Solid Waste
Association of North America Conference, November
1998.
Co-speaker, "Minnesota Library Access Center,
Environmental Issues and Solutions", Minnesota Ground
Water Association Conference, November 1998.
Co-author, "Design Considerations Due to Groundwater
Contamination, Minnesota Library Access Center',
American Society of Civil Engineers, Geo-engineering for
Underground Facilities Conference, December 1998 (under
review).
SUMMARY
Mr. Jansen is the Vice President of Remediation at PEER and
is a registered professional geologist with over 12 years of
environmental consulting experience. Mr. Jansen supervises
and provides oversight to technical staff involved with projects
related to hazardous substance, petroleum and agricultural
chemical releases. Mr. Jansen specializes in design and
implementation of voluntary investigations and cleanups
related to Brownfield redevelopment projects.
Mr. Jansen has directecl investigation and cleanup actions on
a wide variety of industrial, commercial and residential sites
with soil and ground water contamination from chlorinated
solvents, heavy metals, petroleum products, PCBs, solid
waste, and agricultural chemicals. He is experienced in
investigative methods and techniques related to drilling and
well construction, sampling, geophysics and analytical testing.
He has designed and implemented site cleanups using in-situ
and ex-situ technologies including air and bio-sparging, soil
venting, bioventing, solidification and stabilization, thermal
desorption, and landfarming.
SELECTED EXPERIENCE
Most recently, Mr. Jansen has managed several large
Brownfield voluntary investigation and cleanup projects under
the direction of the Minnesota Pollution Control Agency
(MPCA) and Minnesota Department of Agriculture (MDA).
These include the Quarry Retail Shopping Center
Development in Northeast Minneapolis, the Minnesota Ubrary
Access Center on the University of Minnesota west Bank
Campus, and a former pesticide manufacturing facility in
Minneapolis.
Mr. Jansen's work on Brownfield and investigation/cleanup
projects routinely involves working with the MPCA VIC/VPIC
and MDA Voluntary Oeanup and Technical Assistance
(VCTAP) programs to obtain liability assurance letters. He
also has hands-on experience with public cleanup funding
programs including Department of Trade and Economic
Development (DTED), Met Council, Petrofund and Agricultural
Chemical Response and Reimbursement Account (ACRRA).
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Mr. Jansen's property transfer experience has involved management and/or oversight of more than 500 Phase I and
Phase II environmental assessments on commercial, industrial and multi-family housing properties. He works on a
regular basis with purchasers, owners and lenders to resolve identified environmental issues and to close property
transactions on a timely basis.
VOLUNTARY INVESTIGATION AND CLEANUP PROJECTS
Minnesota Library Access Center (MLAC), University of Minnesota, Minneapolis, Minnesota. MLAC is a unique
underground facility constructed within sandstone bedrock 70 feet below the ground surface. This facility will
be used for long-term storage of paper-based library and archival materials. Project manager for services
provided to the University of Minnesota prior to and during construction of the MLAC. A pre-construction
environmental investigation of the proposed project area was conducted to define the nature and extent of
polynuclear aromatic hydrocarbon (PAH) and petroleum ground water contamination, which originated from off-
site sources. A "No Association" determination was obtained from the Minnesota Pollution Control Agency
(MPCA) Voluntary Investigation and Cleanup (VIe) Program for the identified contamination, which allowed
construction to proceed. An environmental contingency plan was developed to ensure proper identification,
management and disposition of contaminated bedrock and ground water encountered during construction. Mr.
Jansen is currently providing oversight and documentation of contingency plan implementation and related
construction activities.
Quarry Retail Development, Minneapolis, Minnesota. Project manager for services provided to the Minneapolis
Community Development Agency prior to property acquisition and during construction of the Quarry shopping
center. Pre-acquisition services included an extensive Phase II investigation of a planned re-development
project. A portion of the site was a former limestone quarry later used as a dump. Investigation activities
involved completion of 116 soil gas, soil, ground water and methane sampling probes and on-site analysis of the
samples, completion of 41 soil borings, installation of 9 monitoring wells, a geophysical (electromagnetic)
survey, monitoring well sampling, and analytical testing of soil and ground water samples. An investigation
report was prepared which summarized all data. A detailed response action plan was prepared which evaluated
response action alternatives and associated costs, and recommended the preferred alternatives. MPCA
approved response actions included in-situ soil venting, venting of methane at the site perimeter and in new
site structures, in-situ soil stabilization, excavation and treatment of contaminated soil, and long term ground
water monitoring.
Site Investigation and Cleanup, Lightning and Transients Research Institute, Lauderdale, Minnesota. Senior
project manager for investigation and cleanup services provided to the University of Minnesota prior to the sale
of the property. An electrical substation and electrical research facility previously occupied the L TRI site. Past
site activities had resulted in extensive polychlorinated biphenyls (PCB) contamination to soils and building
materials. The site contamination prohibited its occupancy and redevelopment. Site investigation and cleanup
was conducted in two stages. In 1995, additional investigation and interim cleanup activities were implemented
which included testing, segregation, removal and disposition of over 100 drums and boxes of hazardous PCB
waste and over 400 tons of non-hazardous debris and scrap material. A Response Action Plan for full site
cleanup was prepared and approved by EPA Region V and the MPCA VIC Program. Subsequently, PEER
assisted in preparation of a cleanup grant application to the Metropolitan Council's "Metropolitan Livable
Communities Fund Tax Base Revitalization Account Grant" program. A sizable cleanup grant was awarded to
the site. In 1997-1998, the full-scale cleanup was implemented which involved decontamination of the on-site
building, excavation of PCB-contaminated soils, and disposal of soils and cleanup derived wastes at either a
local landfill (non-hazardous PCB levels) or an out-of-state landfill (hazardous PCB levels). A "Certificate of
Completion" was obtained from the MPCA, which allowed sale of the property to a private developer.
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PETROLEUM STORAGE TANK INVESTIGATION/CLEANUP PROJECTS
Two Former Service Stations, New York Mills, Minnesota. Project manager for current owner trying to obtain
file closure from the MPCA for petroleum releases from two former service stations. Initial services involved
evaluation of existing hydrogeologic investigation data and a pump-and-treat corrective action design (CAD
prepared for the site by a previous consultant. Mr. Jansen developed a more cost-effective cleanup approach
involving in-situ air sparging and soil venting. A pilot study was conducted to demonstrate the effectiveness of
air sparging and soil venting in remediating petroleum contaminated soil and ground water at the site. A
revised CAD was prepared and regulatory approval was obtained. Two separate in-situ air sparging and soil
venting systems were subsequently installed and operated at the site. File closure for both petroleum releases
was obtained from the MPCA approximately three years after the start of remediation. Mr. Jansen assisted the
client in obtaining maximum reimbursement from the state Petrofund.
Former Railyard Fueling Depot, Southern Minnesota. Project manager for current property owner of a former
railyard site with past petroleum releases. Initial services included a detailed evaluation of existing
hydrogeologic and analytical data from SO soil borings, 12 monitoring wells, and 42 test pits previously
generated by other consultants. The site data was summarized and interpreted to determine the extent and
magnitude of petroleum contaminated soil and ground water. Remedial alternatives and remediation costs
were evaluated and a free product recovery system was designed. A ground water pumping test was
conducted to confirm the effectiveness of the proposed system. Follow-up investigation was completed to
evaluate potential impacts to an underlying limestone bedrock drinking water aquifer. MPCA-approved remedial
actions are in progress and include passive product recovery and ground water monitoring.
Former Bulk Oil Storage Facility, St. Pau~ Minnesota. Project geologist for field investigation activities of a
former, 7 million-gallon capacity bulk oil storage facility located on a bedrock bluff along the Mississippi River.
Investigation activities included completion of soil borings, installation of monitoring wells in the St. Peter
Sandstone bedrock formation, completion of test pits in the adjacent river flood plain, and soil and ground
water sampling and analysis. An investigation report was prepared, and response action alternatives and
cleanup cost estimates were developed.
AGRICULTURAL CHEMICAL INVESTIGATION/CLEANUP PROJECTS
Former Pesticide Manufacturing Facility, Minneapolis, Minnesota. Senior project manager for an ongoing
investigation and cleanup project related to a former "grasshopper bait" manufacturing facility located within a
commercial/residential area of Minneapolis. The property is targeted for sale and redevelopment. The project has
involved an extensive investigation program to delineate the on-site and off-site extent of arsenic and lead-
contaminated soil and ground water. The project is being conducted in cooperation with the Minnesota Department
of Agriculture (MDA) Voluntary Cleanup and Technical Assistance Program (VCTAP). A preliminary corrective action
design has been prepared and submitted to the MDA. Computer-aided ground water/fate and transport modeling,
and health-based risk assessment are being conducted in support of site,..specific cleanup goals.
Agricultural Research/Experimental Stations, Rural Minnesota. Project manager for the University of Minnesota
related to agricultural chemical investigation and cleanup services at four active facilities. Initial project services
included design and removal/disposal of six pesticide rinsate underground storage tanks located at four
facilities. Pesticide releases were identified at each location. Visually contaminated soil was excavated,
stockpiled on-site, and then treated by on-site land application. Remedial investigations were conducted at two
of the facilities to define the extent of soil and ground water contamination. Additional investigation is in
progress at these two facilities in support of obtaining file closure. Project has been conducted under the
direction of MDA's VCTAP and Comprehensive Cleanup programs.
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Former Grain Storage Facility, St Pau~ Minnesota. Project manager investigation and remediation services provided
to the City of St. Paul in conjunction with demolition of a grain storage facility along the Mississippi River. During
site wide demolition, releases were identified from PCB electrical transformers, an underground petroleum storage
tank and an unidentified source of creosote. Investigation activities included risk assessment and fate and transport
calculations to evaluate potential impacts to the river from ground water contamination. A clean-up plan was
developed and approved by the MPCA VIC Program. Oeanup activities included off-site disposal of PCB
contaminated materials and on-site biological treatment of creosote and petroleum impacted soil. A No Action letter
was obtained from the MPCA following completion of post-cleanup monitoring. The site is currently being used for
temporary parking and is part of the Upper Landing redevelopment area.
Agricultural Chemical Release Investigation and Cleanup, Rural Farm Sites, Minnesota. Project manager for
investigation and cleanup services of agricultural chemical spills (herbicide and fungicide) at farm sites acquired by
the U.S. Farmers Home Administration. Remediation of the herbicide spill included excavation of contaminated soil
and land application per product label rates. Remediation of the fungicide spill involved excavation of contaminated
soil and incineration at an out-of-state RCRA approved facility. File closure regarding both incidents was obtained
from the MDA.
PROPERTY TRANSFER PROJECTS
Portfolio - Phase I and Phase II Environmental Assessments, 33 Apartment Complexes located throughout the
Midwest Senior project manager for a comprehensive Phase I Environmental Assessments of thirty-three
apartment complexes conducted for a nationwide property management firm. The assessments were prepared
in accordance with both ASTM and Fannie Mae guidelines and were completed within a 45-day time frame.
Additional investigation was performed at six sites, either in the form of Phase II investigation or additional
historical research, on a rush basis to facilitate the property transactions. The buyer and their lender used the
environmental assessment results to successfully complete all of the property transactions.
Phase I and Phase II Environmental Assessment, Apartment Complex on Former Dump Site, Minneapolis,
Minnesota. Project manager for a comprehensive environmental assessment of an apartment complex property
completed for a prospective buyer. The Phase I identified that the apartments were built on a former un-
permitted dump. A former underground fuel oil storage tank was also identified. The property was entered
into the MPCA VIC Program to obtain liability assurances. A Phase II investigation was conducted to
characterize the nature and extent of the dump materials present. The Phase II results were utilized to obtain a
"No Association" determination from the MPCA for identified ~ontamination, which allowed the buyer to obtain
financing and purchase the property.
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EDUCATION
Bachelor of Sdence Degree in Geology, emphasis in
Hydrogeology, 1992, Institute of Technology, University
of Minnesota, Minneapolis, Minnesota.
OSHA 4O-Hour Hazardous Waste Operations
Certification (29 CFR 1910.120).
PROFESSIONAL AFFILIATIONS
Registered Professional Geologist, Minnesota
Minnesota Ground Water Assodation (MGWA).
National Ground Water Assodation.
KRISTIN J. WALCH
SUMMARY
Ms. Walch is an environmental geologist with over five years of
professional experience. Ms. Walch manages a variety of projects
and has supervised all types of field investigation activities. Ms.
Walch's project management responsibilities include the design,
oversight and implementation of environmental investigations
and remediation techniques, evaluation and interpretation of
geologic, hydrogeologic and chemical data, providing
recommendations based on investigation results and preparation
of a variety of reports and documents. Project experience has
included voluntary investigation & cleanup (VIe) projects,
monitoring underground storage tank (UST) removals, UST
release investigations, corrective action implementation, Property
Transfer Assessments, environmental monitoring for large
development and construction projects, browfields
redevelopment projects, agricultural chemical release
investigations and all types of soil and ground water
investigations.
SELECTED EXPERIENCE
Cooperative Service Station Site, Big Stone County, Clinton,
Minnesota. Managed investigation of a former underground
storage tank (UST) system release located in a small
community residential area. Investigation activities included
completion of soil borings and sampling probes, installation of
monitoring wells, completion of a vapor survey of all
underground utilities in the vicinity of the site, soil and ground
water sampling and analysis and oversight of the excavation
. and subsequent land farming of petroleum contaminated soil.
A risk assessment was completed which identified a
downgradientsurface water receptor. Long term monitoring is
being performed to evaluate plume characteristics and the
risks associated with the downgradient surface water body and
to determine if additional corrective actions are necessary at
the site. Assistance was provided to the client in obtaining
state reimbursement for a majority of the investigation costs.
Former Service Station Site, Garden City, Minnesota. Served
as project manager for the investigation of a former service
station site, partially redeveloped as a state highway. Ms.
Walch evaluated geologic, hydrogeologic and analytical
investigations completed at the site by other consultants,
managed additional soil and ground water investigations to
evaluate the extent of petroleum contamination and the impact
to nearby drinking water receptors and bedrock aquifers. A
nearby shallow drinking water well was identified as a potential
receptor. A corrective action design (CAD) was developed to
remediate the contaminated ground water and soil vadose
zone. CAD implementation included completion of 50 sampling
probes, subsurface injection of oxygen release compound
(ORC), installation of ground water monitoring points and wells,
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evaluation of hydrogeologic characteristics and recovery of free phase petroleum product. Long term ground
water monitoring is currently being conducted to assess the results of the CAD and to determine if additional
remediation will be necessary at the site. Assistance was provided to the client in obtaining reimbursement for a
majority of the investigation and cleanup costs.
Proposed Underground Library Access Center, Minneapolis, Minnesota. Managed field activities during the
subsurface investigation for a proposed underground structure. The structure was to be constructed in the
vicinity of a contaminant plume from a former manufactured gas tank holder. Investigative activities included
completion of borings and monitoring wells through unconsolidated soils as well as limestone bedrock using air
rotary drilling and rock coring techniques, logging soil types and geological features of bedrock units, collecting
and analyzing soil and ground water samples, reviewing geotechnical logs of additional bedrock borings from
the area, characterizing bedrock fracture data and ground water flow, and analyzing the investigation results.
Site Redevelopment, Science Museum of Minnesota, Sf. Paul, Minnesota. Served as project manager for the
redevelopment of 9 separate parcels located along the riverfront. An extensive Phase II investigation was
completed for the site. Investigation activities included: completion of 40 soil borings, installation of 4 ground
water monitoring wells, soil and ground water sampling and analytical testing, and review of geotechnical boring
data from the site. Based on the investigation results, several summary reports were prepared to document the
conditions across the site. Ms. Walch assisted the client in obtaining a "No Association" determination
Assurance from the Minnesota Pollution Control Agency (MPCA) regarding the identified contamination. A
detailed Contingency Plan was then developed for dealing with contaminated soils and ground water
encountered during facility construction. Ms. Walch managed field personnel in performing daily oversight and
monitoring of all subsurface excavations and drilling of subsurface support piers during facility construction.
Oversight and coordination of the excavation and disposal of contaminated soil encountered during facility
construction was provided. Appropriate permits were obtained for construction dewatering activities and
sampling and monitoring of the dewateing was provided. Numerous documentation reports were prepared for
the MPCA during the coarse of site redevelopment. Upon completion of construction monitoring, a detailed
contingency plan implementation report was prepared which summarized the site history and all construction
monitoring and contamination disposition activities completed.