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Home My WebLink About02-07 Site Plan Oversize PlanApproved Plans L:\TEMPLATEXFILEINFO.DOC Church St. Michael -) 16511 Duluth Ave. S.E. · Prior Lake, MN 55572 Phone: (952) 447-2491 · Fax: (952) 447-2489 LEASE OF PARKING AREA AGREEMENT Recitals: The Church of St. Michael of Prior Lake, a Minnesota religious corporation ("St. Michael's"), owns a parcel of land (among others) in Scott County, Minnesota, located generally on the Northwest comer of Pleasant Street and Duluth Avenue next to the Church Education Building, in the City of Prior Lake, containing approximately 56 marked parking spaces (the "Church lot"). Ballard-Sunder Funeral Home ("Ballard Sunder") owns a parcel of land in Scott County, Minnesota located about ½ block East of the Church lot, 4565 Pleasant Street SE, in the City of Prior Lake, containing approximately 20 marked parking spaces. ( The "Ballard-Sunder lot"). Both St. Michael's and Ballard-Sunder maintain these paved parking lots for the use of their customers, guests, parishioners and invitees. The hours of operation and use differ in that the busiest time at the Church is Saturday afternoon and evening and Sunday mornings, while the Funeral Home is generally closed at that time. Conversely, the busiest time for the Funeral Home is during the week, when the church does not generally have large functions scheduled. Therefore, the parties have agreed to enter into this Lease Agreement to allow the each other to use their parking lot during those busiest times. NOW, THEREFORE, St. Michael's does hereby lease from Ballard-Sunder for $1 00 per year the right for its parishioners, guests and invitees to park up to 20 cars in the Ballard-Sunder lot from Saturday at 4:00 p.m. through Sunday at 1:00 p.m., and on Christmas Eve and Christmas Day. APPROVED Buildin9 a strong Christ.centered cororounit}, where all are wekoroed, valued and eropowered to share their 9iris and talents. In return, in the event Ballard-Sunder needs additional parking, St. Michael's Church will allow Bailard-Sunder's customers, guests and invitees to park up to 56 cars in the Church lot during the normal business hours of the funeral home. IT IS FURTI-I~R AGREED AS FOLLOWS: 1. Each party shall be responsible for ail maintenance, repairs, plowing and sanding as necessary on its own property. Each party shail hold the other harmless from and against all claims, liabilities, damages, costs and expenses, injuries to the property and/or to persons, arising out of each other's use of the described parking lots. 2. Each party shall obtain and maintain their own policy of general liability insurance naming the other as an additional insured. 3. This Agreement shall be binding on and inure to the benefit of each party's successors and assigns. 4. This Agreement may be terminated by either party by giving 30 days notice in writing, to the other party. Otherwise it shail automaticaily renew, on the yearly anniversary date, for an additi.'onal year. Dated April ~'T]4 ,2002 BALLARD-SUNDER FUNERAL HOME CHURCH OF ST. MICHAEL OF PRIOR LAKE By ~d/-~4 PARKING LOT NUMBERS Parking Lot spaces needed for Church Expansion 433 Church Lot School Lot Parish Office Lot Ballard-Sunder &?2-~spaces 110 spaces 7 spaces 20 spaces Total Spaces 44~9 spaces APPROVED May13,2002 Church of St. Michael Attention: Judy Menden, Facilities Manager 16311 Duluth Avenue SE Pdor Lake, MN 55372 RE: St. Michael's Church Addition Dear Ms: Menden: The City of Prior Lake has completed its review of the site plan application for the addition to St. Michael's church. This letter serves as the official notice of approval of the site plan for this addition. Attached is an approved set of plans for your files. Approval of this site plan is subject to the following conditions: The addition, 'parking and landscaping must be constructed as shown on the approved plans. Any building permits necessary for the addition must be obtained prior to any construction on the site. If you have any questions, please contact me at the Planning Department at 952-447- 9810. Sincerely, Planning Coordinator Enclosures: 1. Approved Plans c: DRC Members 1:\02files\02siteplan\02-07stmike~approval.doc Page 1 16200 Ea§le Creek Ave. S.E., Prior Lake, Minnesota 55372-1714 / Ph. (952) 447-4230 / Fax (952) 447-4245 AN EQUAL OPPORTUNITY EMPLOYER FILE C6P¥ May 3, 2002 Church of St. Michael Attention: Judy Meriden, Facilities Manager 16311 Duluth Avenue SE Prior Lake, MN 55372 RE: City of Prior Lake Review of the Site Plan Application for St. Michael's Church Addition Dear Judy: The City of Prior Lake has completed its review of the site plan for the addition to St. Michael's Church. Before this plan can be approved, the issues listed on the attached memorandum from WSB Associates must be addressed. In essence, a wetland delineation must be completed on this site. Thank you for your attention to this matter. If you have any questions, please contact me directly at 952-447-9810. Sincerely, cc: DRC Members 1:\02files\O2siteplan\O2-O7strnike\changes.doc Page 1 16200 Eagle Creek Ave. $.E., Prior Lake, Minnesota 55372-1714 / Ph. (952) 447-4230 / Fax (952) 447-4245 AN EQUAL OPPORTUNITY EMPLOYER Memorandum ~om .' Date: Re: Sue McDermott, P.E., City Engineer City of Prior Lake Andi Moffatt, Biologist }VSB & Associates, Inc. May 1, 2002 Review of Church of St. Michael Expansion Project WSB Project No. 1430-13 As requested, we have completed our water resource review of the plans dated March 22, 2002 for the Church of St. Michael expansion project. Based on our review, we offer the following comments: : Wetland Conservation Act Review Comments 1. The site plans show two areas labeled as "edge of low area" to the south and west of the parking lot. Based on a brief field review on April 30, 2002, these areas appear to be jurisdictional wetland. Further, the National Wetland Inventory also identifies these areas as wetlands. The wetlands will need to be delineated in conformance with the Wetland Conservation Act, the wetland edge will need to be identified on the plans, and the delineation will need to be field reviewed by the City. If the parking lot expansion is anticipated to fill a portion of the wetland, wetland mitigation will need to be provided. If these areas are jurisdictional wetland, the City requires a 30-foot buffer to be included around the wetlands for those portions of the wetland on the church property. Hydrologic/Hydraulic. Water Quality? and Grading Comments 2. There is no treatment provided for the runoffbefore it enters the infiltration basin. This treatment may be necessary. ~ay ~, 2002 Pa~e 2 of 2 3. The infiltration basin may be in an area that is currently a wetland. Water table depth and the presence of organic soils may affect the ability of the infiltration basin to function effectively. A wetland delineation is needed to verify the placement of this infiltration basin. This concludes our review of these plans. If you have any questions or need additional information, please feel free to call me at (763)287-7196. Dave Hutton, P.E., WSB C:I WlNDOW,~Temporary Internet FileslOLK39410423025m-stmike.doc have reviewed the attached following: L_ ................. Water City Code Grading Sewer v/'' Storm Water Signs Zoning Flood Plain County Road Access Parks Natural Features Legal Issues Assessment Electric Roads/Access Policy Septic System Gas Building Code Erosion Control Other Recommendation: Approval Denial Conditional Approval Comments: Signed: ¢ ~"~!, ~ Date: Please return any comments by Thursday, May 2, 2002, to Jane Kansier, DRC Coordinator City of Prior Lake 16200 Eagle Creek Avenue SE Prior Lake, MN 55372 Phone: (952) 447-9812 Fax: (952) 447-4245 1:\02files\02siteplan\02-07stmike\referral.doc Page 2 04/i8/2002 07:59 9522263756 INTEGRA TELECOH PL PAGE 0i/0i I have reviewed the attached proposed request (St. Michael's Church Addition) for the following: Water City Code Grading Sewer Storm Water Si~lns Zonin~l Flood Plain County Road Access Parks Natural Features Legal Issues Assessment Electdc Roads/Access Policy Septic System' Gas Building Code Eros!on C~ntrol ~(; Oiher -/'F_LE, Recommendation; X Approval Denial ConditionaJ Approvel Comments: · -." TELECOM rtolq Barlage 0.S.R Engineering & Design Please return any comments by Thursday, May 2, 2002, to Jane Kansier, DRC Coordinator City of Prior Lake 16200 Eagle Creek Avenue SE Prior Lake, MN 55372 Phone: (952) 447-9812 Fax: (952) 447-4245 1:\02files~O2slteplan\n2.07$[mike\referraLdoc Page 2 I have reviewed the attached proposed request (St. Michael's Church Addition) for the following: Water I City Code Grading Sewer /'~ Storm Water Zoning Flood Plain County Road Access Parks Natural Features Legal Issues Assessment Electric Roads/Access Policy Septic System Gas Building Code . Erosion Control Other Reoommendatlon: ~'"Approval Denial , , , Conditional Approval Please return any comments by Thursday, May 2. 2002. to Jane Kansiar, DRC Coordinator City of Prior Lake 16200 Eagle Creak Avenue SE Prior Lake, MN 55372 Phone: (952) 447-g812 Fax: (952) 447-4245 h\02flles\02alteplant02-07etmlke'~'eferml.doc 'd Page 2 urch St. Michael 16511 Duluth Ave. S.E. · Prior Lake, MN 55572 Phone: (952) 447-2491 · Fax: (952) 447-2489 LEASE OF PARKING AREA AGREEMENT Recitals: The Church of St. Michael of Prior Lake, a Minnesota religious corporation ("St. Michael's"), owns a parcel of land (among others) in Scott County, Minnesota, located generally on the Northwest corner of Pleasant Street and Duluth Avenue next to the Church Education Building, in the City of Prior Lake, containing approximately 56 marked parking spaces (the "Church lot"). Ballard-Sunder Funeral Home ("Ballard Sunder") owns a parcel of land in Scott County, Minnesota located about ½ block East of the Church lot, 4565 Pleasant Street SE, in the City of Prior Lake, containing approximately 20 marked parking spaces. ( The "Ballard-Sunder lot"). Both St. Michael's and Ballard-Sunder maintain these paved parking lots for the use of their customers, guests, parishioners and invitees. The hours of operation and use differ in that the busiest time at the Church is Saturday afternoon and evening and Sunday mornings, while the Funeral Home is generally closed at that time. Conversely, the busiest time for the Funeral Home is during the week, when the church does not generally have large functions scheduled. Therefore, the parties have agreed to enter into this Lease Agreement to allow the each other to use their parking lot during those busiest times. NOW, THEREFORE, St. Michael' s does hereby lease from B allard- Sunder for $1.00 per year the right for its parishioners, guests and invitees to park up to 20 cars in the Ballard-Sunder lot from Saturday at 4:00 p.m. through Sunday at 1:00 p.m., and on Christmas Eve and Christmas Day. Buildin9 a stroh9 Christ-centered community where all are wekomed, valued and empowered to share their 9if ts and talents. In return, in the event Ballard-Sunder needs additional parking, St. Michael's Church will allow Ballard-Sunder's customers, guests and invitees to park up to 56 cars in the Church lot during the normal business hours of the funeral home. IT IS FURTHER AGREED AS FOLLOWS: I. Each party shall be responsible for all malmenance, repairs, plowing and sanding as necessary on its own property. Each party shall hold the other harmless from and against all claims, liabilities, damages, costs and expenses, injuries to the property and/or to persons, arising out of each other's use of the described parking lots. 2. Each party shall obtain and maintain their own policy of general liability insurance naming the other as an additional insured. 3. This Agreement shall be binding on and inure to the benefit o£ each party's successors and assigns. 4. This Agreement may be terminated by either party by giving 30 days notice in writing, to the other party. Otherwise it shall automatically renew, on the yearly anniversary date, for an additional year. Dated April ~'-/7-1 ,2002 BALLARD-SUNDER FUNERAL HOME By~(~~~ CHURCH OF ST. MICHAEL OF PRIOR LAKE PARKING LOT NUMBERS Parking Lot spaces needed for Church Expansion 433 Church Lot School Lot Parish Office Lot Ballard-Sunder .3-1~spaces 110 spaces 7 spaces 20 spaces Total Spaces spaces go'o0~ ~.~' [,6~OOS Owner Church of St. Michael 16311 Duluth Ave S.E. Prior Lake, Minnesota 55372 PH. (952) 447-2491 Judy Menden, Facilities Manager Surveyor Valley Surveying Co. 16670 Franklin Trail S.E. Suite 230 Prior Lake, Minnesota 55372 PH. (952) 447-2570 Designer Professional Design Group 105 East Fourth Street Suite 200 PO Box 641 Northfield, Minnesota 55057 PH. (507) 645-2298 Construction Contractor Mahowald Builders, Inc. 7877 West 150th Street Prior lake, Minnesota 55379 PH. (952) 447-2788 FILE COPY April 15, 2002 Church of St. Michael Attention: Judy Menden, Facilities Manager 16311 Duluth Avenue SE Pdor Lake, MN 55372 RE: City of Prior Lake Review for Application Completeness for the Site Plan Application for St. Michael's Church Addition Dear Judy: On April 15, 2002, the City of Prior Lake determined all of the necessary submittals for the above application have been received. This letter serves as your official notification that the application is now complete. The DRC will now begin formal review of this request. We will notify you of any additional information or any changes to the plans that may be required. If necessary, we will schedule a DRC meeting with you to review this application. In accordance with Section 1108.900 of the City Zoning Ordinance, the Planning staff will notify you within 60 days, or by June 15, 2002, abut the action on this application. If you have questions relative to the review process or related issues, please contact me directly at 952-447-9810. Sincerely, , , , ~ne Kansier, AICP Planning Coordinator cc: DRC Members 1:\02files\O2siteplan\O2-O7stmike\complete.doc Page 1 16200 Eagle Creek Ave. S.E., Prior Lake, Minnesota 55372-1714 / Ph. (952) 447-4230 / Fax (952) 447-4245 AN EQUAL OPPORTUNITY EMPLOYER PRIOR LAKE-SPRING LAKE WATERSHED DISTRICT REVIEW of PERMIT APPLICATION March 7, 2002 Permit A~elication No. 02.08 Applicant: Church of St Michael 3udith Menden, Facilities Manager 16311 Duluth Ave SE Prior Lake. MN 55372 Recommendation: Approve with the following conditions: 1. Low land to the immediate south of the site will be protected with a soil berm just off the entire south edge of the parking area. The berm location with respect to topography is to be verified by the final survey to be provided by the applicant before permit issuance. 2. Berm is to be smooth graded and seeded. 3. Applicant/owner is to maintain the berm and associated area such that it retains initial site runoff and allows infiltration. This is not a permit. If this project is approved, the owner/applicant is required to obtain an actual permit prior to starting construction. Location: Church of St Michael, City of Prior Lake, Scott County, MN. Purpose: Expansions of building and parking areas. Exhibits: Findings: Fee of $60 received by check dated 2/26/02. List of landowners and mailing labels, for the 136 landowners within 600 of the project. Application received on 2/28/02. Plan drawing that includes erosion control and berm. Profile drawing showing typical cross section of the berm and basin area. Notice dated 3/4/02. This was mailed to landowners within 600 feet of subject area. Site requires a permit since it involves more than 10,000 sq. ft of disturbed area in a shoreland protection zone as defined in Rule A. During the construction phases of the project and until the total site is stabilized, erosion control is required to be maintained around the downstream perimeter of the site. The design meets the stormwater requirements of the District. This will be accomplished by the retention and infiltration of runoff resulting from at least the 0.5 inch rain on the incremental impervious area (0.37 acres). Board Action: PERMIT# 02.0~ (:;hu~ ~ St Michael- Buildin~ & Parkin~ Expansion Name of Permittee (Must be same as original Owner. Applicant) I-I~ .M,.e, Bden, Facilities Manager I Permittee's Address (Street, RFD, Box, City, State, Zip Code) t631t I~ltuth Ave SE Pdor Lake, MN 55372 PRIOR LAKE-SPRING LAKE WATERSHED DISTRICT 16670 Fmnldln Trail S.E., ~ 110, Prior !.a~, MN 56372, (612) 447-4166, 447~167 (fax) This permit consists of several pages, including the appmy~d plan, Telephone # Project Location (Township, Range, Section) and Address Exi~ Church property at SW comer of Duluth and Pleasant, in the Cit~( of Pdor Lake Project Legal Description (attach separate sheet if necessary) AS~ in Scoff Co Abstract&Title letter of 2/26/02 to,Church of St Michael; copy supplied to PLSLWD. ~ERMIT CATEGORY (check applicable type(s)) ~ Land Disturbance (C) ~ Flood PI Alt (F) ~-) Stormwater Mgt (D) ~--~ Wetland Alt (G) ~-~ Erosion &Seal Ctrl (E) ~'~ Bridge/Culvert xing(H) PROJECT DESCRIPTION Drainage Alteration (I) Buffer Strips (J) other, explain ExPansion of Chumh parking lot and building; total new disturbed area of about 16,000 sq ft. The Board found the above Project to conform with the District's Overall Plan and Rules, and ordered that this Permit be issued, effective on the date shown below, SUBJECT TO THE GENERAL TERMS AND CONDITIONS ON PAGE 2 AND THE SPECIAL CONDITIONS LISTED BELOW: ~ermittee is required to keep a set of the approved plan on the site while authodzod work is in ~rogress on the site. The approved plan is shown on RLK drawing (sheet 1/1, 2002147M) received at PLSLWD on 3126/02. Applicant/owner is to maintain the berm and associated area such that it retains initial runoff and promotes infiltration. This permit includes the two pages of this form and the above referenced RLK drawing. This permit incorporates by reference the information submitted with the application.. Signature of Distd~ct Repr~,M~ative Is~anc.,e Date! EXPIRATION DATE '~//,'~:/~ ~-INone specifiod; see Rule B 10. Page I of 2 page~ PRIOR LAKE-SPRING LAKE WATERSHED DISTRICT 16670 Fren~in Tre# SE., Suite 110, Pr',~- LMm, MN 56372, (612) 447-4166, 447-4167 (fax) PERMIT GENERAL TERMS AND CONDITIONS OF PERMIT 1. All provisions of the Minnas~a Watershed Act, Overall Plan and Rules of the District, and the General Conditions of the Permit Application, ara by referenoa made pert of this Permit. 2. By acoaf~noa of this Permit, Permittee acknow~dges and agrees to perform and be bound by all Gens~al and Special Terms and Conditiorm of the issuance of this Permit. 3. The Permittae shell ob(ain ali neoa~mry permits and approvals from any other governmental entities with jurisdiction over the Protect, inctuding, but not limited to, the U.S. Army Corl:m of Enginsom, Board of Water and Soil Resources, MN Department of Natural Resources, MN Poltutio~ Control Agency, county, city and township zoning 4. The Permittee shell construct the Project in accordance with the conditions of the Permit, applicable laws, ordinances and regulations of other governmental entities wRh jurisdiction over the Project, and the plans and spsoiflcatic~s outlined under the exhibits co page 1 of the Permit. 5. The Permittso shall not modify the Project or the Plans 'without the prior approval of the District. 6. Pormittso will indemnify, defewd and hold the District harmless from any claims for injury or damage resulting directly or indirectly from the Project. 7 Before starting work on the Project, Permittso shall: (a) obtain and file with the Disb'ict copies of any pea. nits required by other governml entitiso or agenct~; (b) if required by the Oistr~ (see Special Conditicna), datx~t with the District a financial escurRy for an amount and on terms and conditions acceptable to the Board; and c) no, fy the District of the date it intends to begin work. so that the wod( may be viewed in progress. 8. It ia the responsibility of the Permittoe to provide all measures necessary to contain sediment on the site dudng comtructinn. This may reduim the use of ercaion control measures not outlined on the erosion control plan. If this requirement is not met, the Permittee may be ordered to provide additional erc~on control mm if deemed necessary by the District Inspector. 9. The permittee grants to the District, and its agents, empinysso, off'mars and contmotom, a license to effa~,' the Project to perform any inspections or woM( authorized by the Permit or any appiicabis law. The IIcense shall expire after accap~noa of the work by the District and ~auanca of a Certificate of Completion. I0. A Certifloat~ of Completion (PLSLWD Form 6) shall be filed wRh the Distttot withic 10 days after compto['icn of the Projsot so that a final ir~oaction can be made to a~ure comp~anoa with this Permit. 11. If the project is not completed before the Permit e)q~raUon date, penmittee must apply for' renewal of this Permit. if work co the Project is under way, a time extenalon may be granted by the Board for go~xl oause. Wntten reqoast for a time extenaton is to be filed by the Permittee at least 30 days ~ to the eXp~raticn date. Work is no{ permitted ~ a valid Permit. If the Permit expires ~ to the granting of an exten~on, the guidelines eatablished for a new bennR applk:atinn must be fctlo~ed. 12. A transfer of this Permit without p~n changes may be sdminla;ieiivaty approved ~ recetp~ of a Permit Al~inatia~ fee and financial secu~ty from the tranaferes. Any outstanding fees under the initial Permit muat be paid in fu# before ~=e,,~nce of the transfer. Transfare w~th plan changes must follow the guid~inss established for a new permit appacafion. 13. Failure to compfy with this Permit may resuit in one or more of the enforcement actions specif'md in District Rule H 14. if Permittso fails to mpiy w~l this permit, the District may, at its op~on, perf~-m any work necessa~ or incidental to cure the da~ult. Perrniftee ~ait p~eml:~y up(x1 demand reimburse the Disth~ f~' any expense so incurred by the OtstMct, pmv~decl that the Permitt~e shall first he gWen at least 48 hours w~te~ nsUce by oantfied mad, return recaip~ reduested, of the work in dafautt atxl the requtrements to cure default. In the event of an emergency, as de~ermined by the District, the 48 hour noUce requiremec~t to Penntttso may be wisved, and the Pmmittoe s~all reimburse the Disa~ct for any exT,~-~se so incurred in the same manner as if ~ nclioa has been given. 15. The Oi~'i,.ct may draw against the escu~t'/after any default by the Permittso in pedormanoa under this permit, or if the perm~/Jee fails to replace any secunty prior to 30 days of its e~q~ratlon, or if any of the w~k or (x'her obitgafions of the Peffnittee under this Permit have nc( been compiated at leeat 30 days Pne¢ to the expiraticn date specified on Page 1 of the Permit. Alt pmceeda o~ainsd from a draw en the 16. All noticas required to ~3e gm s~all be esnt to the address specified on Page 1 of this Permit. 17 Perm~tee shall reimburse the Dis~ct upon demand for cost or e~q~wr'ae incurred by it to enfo¢ce this Permit. including court costs and reasonable enginetmng and attorney's fees. PLSLWO Form 52 (8/01) Page 2 of 2 pegoa PRIOR LAKE-SPRING LAKE WATERSHED DISTRICT 18670 F ranHin Trail 8.E., Suite 110, Prior I. al~, MN 5E372, (612} 447.41~6, 447-4167 (fax) CERTIFICATE OF COMPLETION PERMITTEE: FORWARD TO OISTRICT UPON COMPLETION ~' PROJECT & PERMIT REQUIREMENTS PROJECT NAME ~.h~! Michael * Building & Parking Expansion Pefmittss (same aa Owner - Applicant) ~ ~llden, Facilities ManaQer tPERMIT NO. Permittee'a Address: I6311 Dut'th Ave SE, Pdor Lake, MN 55372 The undersigned hereby certifies that the work described in the above referenced Permit has been completed as of the day of ,20 , in accordance with the permit granted by the Pdor Lake-Spring Lake Watershed Distdct and is now ready for final inspection. Signature of Permitee Date FINAL INSPECTION FINDINGS (PLSLWD staff use only) ACTIONS REQUIRED [] Send Letter [] Advise Board [] Advise City/Town of Signature of District Representative PLSLWD Fo~m 8 (8~01) [] Advise [] Release of Surety [] Other IDate Stormwater Management Plan fOF KUUSISTO LTD ) Church of St. Michael Prior Lake, MN February, 2002 (( Creating Extraordinary Communities STORMWATER MANAGEMENT NARRATIVE Introduction The proposed building expansion to the Church of St. Michael has created the need for additional parking in order to comply with the City of Prior Lake's ordinances. As a result, the total impervious cover of the site will increase by 0.37 acres. The proposed impervious surfaces would flow across a strip of grass directly into the adjacent municipal stormwater pond. Rule "D" requires that best management practices be used to infiltrate the rtmoff from the impervious areas to the extent feasible considering site- specific conditions. Accordingly, the Church proposes to construct a containment berm along the municipal pond high water line to trap stormwater runoff from the expanded parking lot. Stormwater would be allowed to pool up to a depth of 1.3 feet before overflowing the principal spillway. The pool behind the berm caused by one-half inch of runoff would drain dry over a 72 hour period by infiltration into the underlying soils. Underlying soils are classified according to the "Soil Survey of Scott County" published by the U.S. Department of Agriculture. These soils are identified as Estherville gravelly, sandy loam (Eb) and Lakeville- Bumsville gravelly sandy loam (Lb). Both of these soils fall into Hydrologic Group "B." The infiltration hydraulics for one-half inch of runoff from the proposed impervious area are calculated by the HydroCad® Stormwater Modeling System program. In addition, the 2-year, 10-year and 100-year rainfall events are modeled in order to evaluate the proposed pond and spillway design. Copies of the computer model input and output are attached. Also attached is the Concept Stormwater Management Plan. Conclusions and Recommendations One-half inch of runoff from the proposed building and parking surfaces will produce a volume of 0.19 acre-feet. The proposed infiltration basin will assimilate this volume in 72 hours. Rainfall events that produce more than one-half inch ofrtmoffwill safely pass over the principal spillway. The peak flood elevation of the infiltration basin would be 922.0 as a result of the 100-year, 6"-24 hour storm. The entrance to the Church was measured at 926.1, providing a minimum vertical separation of 4.1 feet. In consideration of the foregoing, it is our opinion that the proposed infiltration basin as designed meets or exceeds the requirements of Rule "D.' Data for St. Michael's Church - Prior Lake Page 1 TYPE II 24-HOUR RAINFALL= 6.00 IN Prepared by RLK-KUUSISTO 25 Feb 02 HydroCkD 5.11 000754 (c) 1986 1999 ApDlied MicrocomDuter Systems WATERSHED ROUTING ............................................................. SUB CATCBI~ENT 1 SUBCATCHMENT 2 POND 2 = Existing Conditions = Proposed Conditions = Proposed Infiltration Basin POND 2 Data for St. Michael's Church - Prior Lake TYPE II 24-HOUR RAINFALL= 6.00 IN Prepared by RLK-KUUSIST0 HydroCAD 5.11 000754 (c/ 1986-1999 Applied Microcomputer Systems Page 2 25 Feb 02 SUBCATCHI~ENT 1 Existing Conditions PEA/K= 22.56 CFS @ 12.01 HRS, VOLUME_ 1.37 AF ACRES CN 1.86 61 2.61 98 4,47 83 Grassed Areas Building, walks, parking lot SCS TR-20 METHOD TYPE II 24-HOUR RAINFALL_ 6.00 IN SPAN= 10-20 HRS, dt=.l HRS Method Comment Tc (min) DIRECT ENTRY Segment ID: 15.0 SUBCATCH/~ENT 2 Proposed Conditions PEAK= 24.02 CFS @ 12.01 HRS, VOLUME= 1.46 AF ACRES CN 1.49 61 Grassed areas 2.98 98 Building, walks, parking lot 4.47 86 SCS TR-20 METHOD TYPE II 24-HOUR RAINFALL= 6.00 IN SPAN= 10-20 HRS, dt=.l HRS Method Comment Tc (min) DIRECT ENTRY Seg~nent ID: 15.0 Data for St. Michael's Church - Prior Lake TYPE II 24-HOUR RAINFALL= 6.00 IN Prepared by RLK-KUUSIST0 HydroC~D 5.11 000754 (c} 1986-1999 ApDtied Microcomputer Systems Page 3 25 Feb 02 POND 2 Proposed Infiltration Basin Qin = 24.02 CFS @ 12.01 HRS, VOLUME- 1.46 AF Qout= 22.68 CFS @ 12.05 HRS, VOLUME= 1.12 AF, ATTEN- 6%, LAG= 2.5 MIN ELEVATION ~qEA INC.STOR CUM.STOR (FT) (AC) (AP) (AF) 920.4 .21 0.00 0.00 921.0 .25 .14 .14 922.0 .31 .28 .42 STOR-IND METHOD PEAK STORAGE - .41 AF PEAK ELEVATION= 922.0 FT FLOOD ELEVATION= 922.0 FT START ELEVATION= 920.4 FT SPAN= 10-20 HRS, dt=.l HRS Tdet= 83.3 MIN (1.11 AF) ROUTE INVERT OUTLET DEVICES 1 P 920.4' 2 P 921.7' EXEILTRATION V= 1.7E-5 FPM over (SURFACE P~REA - .21 AC) 40' BROAD-CRESTED RECTANGULAR WEIR X 1.81 Q=C L H^l.5 C=0, 0, 0, 1.96, 1.96, 1.97, 1.99, 2.02 Data for St. Michael's Church - Prior Lake TYPE II 24-HOUR RAINFALL= 4.20 IN Prepared by RLK-KUUSIST0 HydroCAD 5.11 000754 (c} 1986-1999 ApDlied Microcomputer Systems Page 4 25 Feb 02 SUBCATCHMENT i Existing Conditions PEAK= 13.72 CFS ~ 12.02 HRS, VOLUME= .83 AF ACRES CN 1.86 61 2.61 98 4.47 83 Grassed Areas Building, walks, parking lot SCS TR-20 METHOD TYPE II 24-HOUR RAINFALL= 4.20 IN SPAN= 10-20 HRS, dt=.l HRS Method Comment Tc (min) DIRECT ENTRY Segment ID: 15.0 SUBCATCHMENT 2 Proposed Conditions PEAK= 15.12 CFS @ 12.02 HRS, VOLUME= .92 AF ACRES CN 1.49 61 Grassed areas 2.98 98 Building, walks, 4.47 86 Method parking lot Comment SCS TR-20 METHOD TYpE II 24-HOUR RAINFALL= 4.20 IN SPAN= 10-20 HRS, dt=.l HRS Tc (min) DIRECT ENTRY Segment ID: 15.0 Data for St. Michael's Church - Prior Lake TYPE II 24-HOUR RAINFALL= 4.20 IN Prepared by RLK-KUUSIST0 HydroCAD 5.11 000754 Ic) 1986-1999 Applied Microcomputer Systems Page 5 25 Feb 02 POND 2 Proposed Infiltration Basin Qin - 15.12 CFS @ 12.02 HRS, VOLUME= .92 AF Qout- 10.05 CFS @ 12.18 HRS, VOLUME= .58 AF, ATTEN- 34%, LAG= 9.6 MIN ELEVATION AREA INC.STOR CUM.STOR IFT) (AC) (AF/ /AF) 920.4 .21 0~00 0.00 92t.0 .25 .14 .14 922.0 .31 .28 .42 STOR-IND METHOD PEAK STORAGE = .38 AF PEAK ELEVATION= 921.9 FT FLOOD ELEVATION= 922.0 FT START ELEVATION= 920.4 FT SPAiq- 10-20 HRS, dt=.l HRS Tdet= 115.6 MIN (.58 AF) ROUTE INVERT OUTLET DEVICES 1 P 920.4' 2 P 921.7' EXFILTRATION V= 1.7E-5 FPM over (SURFACE AREA - .21 AC) 40' BROAD-CRESTED RECTANGULAR WEIR X 1.81 Q=C L H^l.5 C=0, 0, 0, 1.96, 1.96, 1.97, 1.99, 2.02 Data for St. Michael's Church - Prior Lake TYPE II 24-HOUR RAINFALL= 2.80 IN Prepared by RLK-KUUSISTO HydroCAD 5.11 000754 (c} 1986-1999 Applied Microcomputer Systems Page 6 25 Feb 02 SUBCATCHMENT 1 Existing Conditions PEAK= 7.15 CFS ® 12.02 HRS, VOLUME= .44 AF ACRES CN 1.86 61 2.61 98 4.47 83 Building, walks, parking lot SCS TR-20 METHOD TYPE II 24-HOI/R RAINFALL= 2.80 IN SPAN_ 10 20 HRS, dt=.l HRS Method Comment Tc (min} DIRECT ENTRY Segment ID: 15.0 SUBCATC~ENT 2 Proposed Conditions PEAK= 8.33 CFS ® 12.02 HRS, VOLUME= .51 AF ACRES CN 1.49 61 Grassed areas 2.98 98 Building, walks, parking lot 4.47 86 SCS TR-20 METHOD TYPE II 24-HOUR R3kINFALL= 2.80 IN SP~/q= 10-20 HRS, dt=.l HRS Method Comment Tc (min} DIRECT ENTRY Segment ID: 15.0 Data for St. Michael's Church - Prior Lake TYPE II 24-HOUR RAINFALL= 2.80 IN Prepared by RLK-KUUSIST0 HydroCAD 5.11 000754 (c) 1986-1999 Applied Microcomputer Systems Page 7 25 Feb 02 POND 2 Proposed Infiltration Basin Qin = 8.33 CFS @ 12.02 HRS, VOLUME= .51 AF Qout= .70 CFS @ 13.02 HRS, VOLUME= .17 AF, ATTEN= 92%, LAG- 60.1 MIN ELEVATION AREA INC.STOR CUM.STOR (FT} (AC/ (AF) (AF) 920.4 .21 0.00 0.00 921.0 .25 .14 .14 922.0 .31 .28 .42 STOR IND METHOD PEAK STORAGE - .34 AF PEAK ELEVATION= 921.7 FT FLOOD ELEVATION= 922.0 FT START ELEVATION= 920.4 FT SPAN= 10-20 HRS, dt=.l HRS Tdet- 225.9 MIN (.17 AF) ROUTE INVERT OUTLET DEVICES 1 P 920.4' EXFILTRATION V= 1.7E-5 FPM over (SURFACE AREA - .21 AC) 2 P 921.7' 40' BROAD-CRESTED RECTANGULAR WEIR X 1.81 Q=C L H~l.5 C=0, 0, 0, 1.96, 1.96~ 1.97, 1.99, 2.02 ~/~gg NR '3N¥'~ ~Ol~d 3'10,~10 C]OOMNI¥~9 LgL'~ 1]NOPIHO$ I/',tVIq-IIM 0/9 q]VHglR '1S ~0 H:D~nHO N¥qd IN3R3OVNVR VIOS]NNlt~t ']~V1 ~JOl~d ~/L L--