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CAS-03_MINNETONKA MIDDLE SCHOOL WEST - ISD 276Thomas J. Camphell Roger N. Knutson Thomas M. Scott Elliott B. Knetsch Joel J. Jamnik Andrea McDowell Poehler Matthew K. Brokl' John F. Kelly Soren M. Mattick Henry A. Schaeffer, III Alina Schwartz Craig R. McDowell Marguerite M. McCarron • Also Licensed in Wirconsin 1380 Corporate Center Curve Suite 317 • Fagan, MN 55121 651-452-5000 Fax 651-452-5550 www.ck-law.com CAMPBELL KNUTSON Professional Association Direct Dial: (651)134-6221 E-mailAddress: snelson@ck-l".com October 12, 2006 Ms. Kim Meuwissen City of Chanhassen 7700 Market Boulevard P.O. Box 147 Chanhassen, Minnesota 55317 RECEIVED OCT 1 3 2006 CITY OF CHANHASSEN RE: CHANHASSEN —MISC. RECORDED DOCUMENTS ➢ Interim Use Permit #06-03 — To Permit the Grading of Approximately 3,400 Cubic Yards For an Infiltration Basin and Drainage Swales - Minnetonka Middle School West / PID #25-0033000 (Part of SW '/A of NW '/4 of Section 3-116-23) Dear Kim: Enclosed for the City's files please find original recorded Interim Use Permit 406-03 which was filed with Carver County on September 25, 2006 as Abstract Document No. A450423. SRN:ms Enclosure Regards, CAMPBELL KNUTSON Professional Association B S san R. Nelson, Leg Assistant SCANNED Document No. OFFICE OF THE A 450423 COUNTY RECORDER CARVER COUNTY, MINNESOTA Fee $ 46 00 Check#: 16316 Certified Recorded on 09-25-2006 at 02:00 ❑AAA PM 1150423 dW III Coun eco CITY OF CHANHASSEN CARVER AND HENNEPIN COUNTIES, MINNESOTA INTERIM USE PERMIT #06-03 1. Permit. Subject to the terms and conditions set forth herein, the City of Chanhassen hereby grants an interim use permit for the following use: To permit the grading of approximately 3,400 cubic yards for an infiltration basin and drainage swales. 2. Property. The permit is for property situated in the City of Chanhassen, Carver County, Minnesota, and legally described as follows: Part of the SW 1/4 of the NW 1/s of Section 3, Township 116, Range 23, Carver County, Minnesota 3. Conditions. The permit is issued subject to plans dated December 19, 2005 prepared by Larson Engineering of Minnesota and the following conditions: a. The applicant shall provide the City with a cash escrow or letter of credit in the amount of $5,600.00 to guarantee erosion control measures and site restoration and compliance with the interim use permit. b. Verify the existing 24 -inch culvert has sufficient capacity before replacing the private drive entrance. c. The applicant must provide a proposed haul route for review and approval. d. If fill is coming from and/or going to another site in Chanhassen, a separate grading permit will be required for the other property. e. All disturbed areas as a result of construction are required to be reseeded and mulched within two weeks of site grading. L An erosion control blanket must be installed on all sides around the infiltration basin. All disturbed areas as a result of construction are required to be sodded or reseeded and mulched within two weeks of site grading. SCANNED g. Submit a full size drainage area map. h. Add City Detail Plates Nos. 3101, 3102, 3103, 5300, 5301 and 5302. Show rock construction entrance per Detail Plate No. 5301. The applicant shall construct and maintain a rock construction access to the site. Access to the site shall be restricted to this access point only. j. The applicant shall obtain and comply with all permit requirements of the Watershed District and MOOT. k. Revise the existing storm sewer flow direction in all plans to match. 1. The applicant shall supply the City with a mylar as -built survey prepared by a professional engineer upon completion of filling and/or excavation to verify the grading plan has been performed in compliance with the proposed plan. in. A plumbing permit must be obtained before installing the storm sewer piping. n. The applicant shall provide a cross section for the filtration area showing the elevation of the draintile and the trenches, as well as a cross section of the trench and details of the material used. The draintile trenches shall be lined with drainage fabric (4% to 6% open space) and filled with pea rock at a depth of at least 18 inches and 3 feet wide. The bottom of the entire filtration basin shall be backfilled with a mixture of 50% coarse clean sand, 25% compost, 25% loamy topsoil for a minimum depth of 6 inches (from approximately 1034.5 to 1035.0). The rest of the area shall be top - dressed with native topsoil. CB -1 shall be revised to be an open beehive inlet at an approximate elevation of 1037 for handling large storm event runoff if the calculations for rate control work out to avoid overwhelming the filtration area and having long periods (greater than 72 hours) of ponding. o. Erosion control blanket/turf reinforcement mat (MnDOT Category 5) shall be used for restoration of the exposed slope from the emergency overflow to the ditch along Highway 41 within 7 days of final grade. The blanket shall be specified and a detail provided. Erosion control blanket shall be installed on any exposed soils south of the private drive within 24 hours of final grade. p. A seed mix for shaded, wooded areas shall be specified in the plan, along with the proposed rate of application. A seed mix for the filtration area and slopes shall also be specified. q. The rip rap at the flared -end section at the south end of the 24 -inch pipe south of the private drive shall be replaced. r. Runoff from the storm sewer system from the school shall be controlled during construction. The water shall be conveyed through a non-erosive means to the Highway 41 ditch through the job site. s. Erosion control blanket category 2 or 3 shall be installed within the filtration area within 24 hours of connecting the 18 -inch PVC to the basin. The blanket shall be applied following a seeding. Remaining exposed soils on site shall be mulched and seeded or sodded within 14 days of final grade. t. The silt fence used shall be a City of Chanhassen type 1 silt fence; monofilament silt fence with metal T -posts, 6 foot maximum spacing and 3 plastic zip ties in the top 8 inches of the fabric. The silt fence specified for the filtration area shall be labeled as "Installed after drain tile installation." u. A rock construction exit pad shall be installed from the bituminous edge 40 to 50 feet long into the job site. v. Street sweeping shall be completed within 24 hours should soil be tracked upon paved surfaces. w. Catch basin inlet control shall be provided for the catch basins adjacent to the school building if tracking of soil becomes a problem on the paved surfaces. 4. Termination of Permit. The City may revoke the permit following a public hearing for violation of the terms of this permit. 5. Lapse. If within one year of the issuance of this permit the authorized construction has not been substantially completed or the use commenced, this permit shall lapse, unless an extension is granted in accordance with the Chanhassen Zoning Ordinance. 6. Criminal Penaltv. Violation of the terms of this conditional use permit is a criminal misdemeanor. Dated: February 27, 2006 3 CITY OF CHANHASSEN By: ✓ Un STATE OF MINNESOTA ) (ss COUNTY OF CARVER ) A. Furlong, Gerhardt, City Manager The foregoing instrument was acknowledged before me this J7L day of 2006, by Thomas A. Furlong, Mayor and Todd Gerhardt, City Manager, of the City of Chanhassen, a Minnesota municipal corporation, on behalf of the corporation and pursuant to authority granted by its City Council. , Not�(rv/Public " DRAFTID BY: l.% City of Chanhassen 7700 Market Boulevard °" + KAREN J. ENGELHARDT P. O. Box 147 j. �, Notary Public -Minnesota z'-- Chanhassen, MN 55317 Mr Commission Exc� Jan 31, 2010 (952)227-1100 Proposed Description (Not of Record as of March 29, 2006) That part of the Southwest Quarter of the Northwest Quarter of Section 3, Township 116, Range 23, Carver County lying easterly of State Highway No. 41; EXCEPT that portion platted as MELODY HILL. CITY OF CHANHASSEN CARVER AND HENNEPIN COUNTIES, MINNESOTA 1. Permit. Subject to the terms and conditions set forth herein, the City of Chanhassen hereby grants an interim use permit for the following use: To permit the grading of approximately 3,400 cubic yards for an infiltration basin and drainage swales. 2. ProcertX. The permit is for property situated in the City of Chanhassen, Carver County, Minnesota, and legally described as follows: Part of the SW 1/4 of the NW 1/4 of Section 3, Township 116, Range 23, Carver County, Minnesota 3. Conditions. The permit is issued subject to plans dated December 19, 2005 prepared by Larson Engineering of Minnesota and the following conditions: a. The applicant shall provide the City with a cash escrow or letter of credit in the amount of $5,600.00 to guarantee erosion control measures and site restoration and compliance with the interim use permit. b. Verify the existing 24 -inch culvert has sufficient capacity before replacing the private drive entrance. c. The applicant must provide a proposed haul route for review and approval. d. If fill is coming from and/or going to another site in Chanhassen, a separate grading permit will be required for the other property. e. All disturbed areas as a result of construction are required to be reseeded and mulched within two weeks of site grading. f. An erosion control blanket must be installed on all sides around the infiltration basin. All disturbed areas as a result of construction are required to be sodded or reseeded and mulched within two weeks of site grading. g. Submit a full size drainage area map. h. Add City Detail Plates Nos. 3101, 3102, 3103, 5300, 5301 and 5302. Show rock construction entrance per Detail Plate No. 5301. The applicant shall construct and maintain a rock construction access to the site. Access to the site shall be restricted to this access point only. j. The applicant shall obtain and comply with all permit requirements of the Watershed District and MnDOT. k. Revise the existing storm sewer flow direction in all plans to match. 1. The applicant shall supply the City with a mylar as -built survey prepared by a professional engineer upon completion of filling and/or excavation to verify the grading plan has been performed in compliance with the proposed plan. in. A plumbing permit must be obtained before installing the storm sewer piping. n. The applicant shall provide a cross section for the filtration area showing the elevation of the draintile and the trenches, as well as a cross section of the trench and details of the material used. The draintile trenches shall be lined with drainage fabric (4% to 6% open space) and filled with pea rock at a depth of at least 18 inches and 3 feet wide. The bottom of the entire filtration basin shall be backfilled with a mixture of 50% coarse clean sand, 25% compost, 25% loamy topsoil for a minimum depth of 6 inches (from approximately 1034.5 to 1035.0). The rest of the area shall be top - dressed with native topsoil. CB -1 shall be revised to be an open beehive inlet at an approximate elevation of 1037 for handling large storm event runoff if the calculations for rate control work out to avoid overwhelming the filtration area and having long periods (greater than 72 hours) of ponding. o. Erosion control blanket/turf reinforcement mat (MnDOT Category 5) shall be used for restoration of the exposed slope from the emergency overflow to the ditch along Highway 41 within 7 days of final grade. The blanket shall be specified and a detail provided. Erosion control blanket shall be installed on any exposed soils south of the private drive within 24 hours of final grade. p. A seed mix for shaded, wooded areas shall be specified in the plan, along with the proposed rate of application. A seed mix for the filtration area and slopes shall also be specified. q. The rip rap at the flared -end section at the south end of the 24 -inch pipe south of the private drive shall be replaced. r. Runoff from the storm sewer system from the school shall be controlled during construction. The water shall be conveyed through a non-erosive means to the Highway 41 ditch through the job site. 2 s. Erosion control blanket category 2 or 3 shall be installed within the filtration area within 24 hours of connecting the 18 -inch PVC to the basin. The blanket shall be applied following a seeding. Remaining exposed soils on site shall be mulched and seeded or sodded within 14 days of final grade. t. The silt fence used shall be a City of Chanhassen type 1 silt fence; monofilament silt fence with metal T -posts, 6 foot maximum spacing and 3 plastic zip ties in the top 8 inches of the fabric. The silt fence specified for the filtration area shall be labeled as "Installed after drain tile installation." u. A rock construction exit pad shall be installed from the bituminous edge 40 to 50 feet long into the job site. v. Street sweeping shall be completed within 24 hours should soil be tracked upon paved surfaces. w. Catch basin inlet control shall be provided for the catch basins adjacent to the school building if tracking of soil becomes a problem on the paved surfaces. 4. Termination of Permit. The City may revoke the permit following a public hearing for violation of the terms of this permit. 5. Lam. If within one year of the issuance of this permit the authorized construction has not been substantially completed or the use commenced, this permit shall lapse, unless an extension is granted in accordance with the Chanhassen Zoning Ordinance. 6. Criminal Penalty. Violation of the terms of this conditional use permit is a criminal misdemeanor. Dated: February 27, 2006 CITY OF CHANHASSEN By: Thomas A. Furlong, Mayor 0 STATE OF MINNESOTA ) ( ss COUNTY OF CARVER ) Todd Gerhardt, City Manager The foregoing instrument was acknowledged before me this day of 2006, by Thomas A. Furlong, Mayor and Todd Gerhardt, City Manager, of the City of Chanhassen, a Minnesota municipal corporation, on behalf of the corporation and pursuant to authority granted by its City Council. DRAFTED BY: City of Chanhassen 7700 Market Boulevard P. O. Box 147 Chanhassen, MN 55317 (952)227-1100 4 Notary Public 0 N oto -C)3 April 4, 2006 CITY OF 7700 Market Boulevard Mr. Michael Murphy PO Box 147 Project Manager Chanhassen, MN 55317 Larson Engineering of Minnesota 3524 Lahore Road Administration downstream erosion and sedimentation along Highway 41. Upon review of the revised Phone: 952.227.1100 White Bear Lake, MN 55110 Fax: 952.227.1110 find no objections to the revised plans. Before issuing a notice to proceed letter, we still Park & Recreation Re: Revisions to Interim Use Permit to Grade - Minnetonka Middle School West Building Inspections Planning Case No. 06-03 & Grading Permit File No. 06-01 Phone: 952.227.1180 1. The applicant shall provide the City with a cash escrow or letter of credit in the Fax: 952.221.1190 amount of $5,600 to guarantee erosion control measures and site restoration and Planning & 2• The applicant shall obtain and comply with all permit requirements of the Natural Resources Watershed District and MnDOT. Phone: 952.227.1130 Fax 952.227.1110 3. The applicant shall supply the Ci hwith a m lar as -built survey prepared by a Public works professional engineer upon completion of filling and/or excavation to verify the 1591 Park Road grading plan has been performed in compliance with the proposed plan. Phone: 952.227.1300 Fax: 952.227.1310 Sincerely, Senior Center Phone: 952227.1125 CITY OF CHANHASSEN Fax:952.227.1110 Web Site www.d.ehanhassen.mn.us ak Sweidan Engineer, Err c: Steve Torell, Building Official Bob Generous, Senior Planner Paul Oehme, City Engineer/Dir. Of Public Work Alyson Fauske, Assistant City engineer Rollyn Peterson, Engineering Tech. IV WAN"D Mike Condon, Minnetonka Public School The City of Chanhassen • A growing community with clean lakes, quality schools, a du coling downtown, thriving businesses, winding trails, and beautiful parks. A genal place to live, work, and play. Dear Mr. Murphy: Engineering Phone: 952.227.1180 Fax: 952.227.1170 This letter is a follow up to your request to grade approximately 3,400 cubic yards of material to construct an infiltration basin on the existing school property to reduce Finance downstream erosion and sedimentation along Highway 41. Upon review of the revised Phone: 952.227.1140 Fax: 952.227.1110 plans and based on the conditions of approval City letter dated February 27, 2006, we find no objections to the revised plans. Before issuing a notice to proceed letter, we still Park & Recreation need the following items: Phone: 952.227.1120 Fax 952.227.1110 1. The applicant shall provide the City with a cash escrow or letter of credit in the Recreation Center 2310 Coulter Boulevard amount of $5,600 to guarantee erosion control measures and site restoration and Phone: 952.227.1400 compliance with the Interim Use Permit. Fax: 952.227.1404 Planning & 2• The applicant shall obtain and comply with all permit requirements of the Natural Resources Watershed District and MnDOT. Phone: 952.227.1130 Fax 952.227.1110 3. The applicant shall supply the Ci hwith a m lar as -built survey prepared by a Public works professional engineer upon completion of filling and/or excavation to verify the 1591 Park Road grading plan has been performed in compliance with the proposed plan. Phone: 952.227.1300 Fax: 952.227.1310 Sincerely, Senior Center Phone: 952227.1125 CITY OF CHANHASSEN Fax:952.227.1110 Web Site www.d.ehanhassen.mn.us ak Sweidan Engineer, Err c: Steve Torell, Building Official Bob Generous, Senior Planner Paul Oehme, City Engineer/Dir. Of Public Work Alyson Fauske, Assistant City engineer Rollyn Peterson, Engineering Tech. IV WAN"D Mike Condon, Minnetonka Public School The City of Chanhassen • A growing community with clean lakes, quality schools, a du coling downtown, thriving businesses, winding trails, and beautiful parks. A genal place to live, work, and play. P 06-03 City Council Meeting — February 27, 2006 Receive Commission Minutes: -Planning Commission Verbatim & Summary Minutes b. Resolution #2006-14: 2005 MUSA Expansion, Bid Package #2, Project 06-05: Receive Feasibility Study, Call for Public Hearing. c. Resolution #2006-15: TH 101 Corridor Scoping and Environmental Screening from Lyman Boulevard South to Scott County Line, PW067174: Approval of Consultant Contract. e. Resolution #2006-16: Lift Station No. 27, PWO55AA: Approve Quotes for Upgrade Improvements. E Minnetonka Middle School West: Approval of Request for an Interim Use Permit to Allow Over 1,000 Cubic Yards of Grading, 6421 Hazeltine Boulevard, (Highway 41). g. Approval of Appointments to Slow -No Wake Task Force for Lake Susan. h. Approval of Agreement with Plowshares for Regional Storm Water Ponding. i. Public Surplus Auction Web Services: Approval of Joint Powers Agreement with the City of St. Paul. j. Sand Companies: Approval of Loan Agreement for Local Housing Incentive Account Grant Award. k. Surface Water Management Plan Update: Approval of Contract Change Order. 1. Approval of Ordinance Renaming Hemlock Lane. m. Resolution #2006-17: Resolution of Support for Dedication of 100% of Motor Vehicle Sales Tax (MVST) to Transportation and Transit Purposes. All voted in favor and the motion carried unanimously with a vote of 4 to 0. VISITOR PRESENTATIONS: PRESENTATION OF LOCAL HOUSING INCENTIVE GRANT; JULIUS SMITH, METROPOLITAN COUNCIL. Mayor Furlong: This evening I would like to welcome our representative to Metropolitan Council, Jules Smith who's here this evening and would like to make a presentation to the council. Jules Smith: Mr. Mayor and council members, it's my pleasure tonight to advance to the City of Chanhassen the $300,000 to help facilitate development of a 3 story, 48 unit building to provide $CANNED CITY OF CHANASEN PLANNING DEPARTMENT 7700 Market Boulevard P.O. Box 147 CHANHASSEN, MN 55317 (952) 227-1100 FAX (952) 227-1110 TO: Campbell Knutson, PA 317 Eagandale Office Center 1380 Corporate Center Curve Eagan, MN 55121 WE ARE SENDING YOU ❑ Shop drawings ❑ Copy of letter LETTER OFTRANSMITTAL Sue Nelson RE: ® Attached ❑ Under separate cover via the following items: ❑ Prints ❑ Plans ❑ Samples ❑ Specifications ❑ Change Order ❑ Pay Request ❑ COPIES DATE NO. DESCRIPTION 1 1/23/06 05-30 Conditional Use Permit - Electric Substation 1 2/27/06 06-03 Interim Use Permit - Minnetonka Middle School West ❑ PRINTS RETURNED AFTER LOAN TO US THESE ARE TRANSMITTED as checked below: ❑ For approval ❑ Foryouruse ❑ As requested ❑ For review and comment ❑ FOR BIDS DUE REMARKS COPY TO: ❑ Approved as submitted ❑ Resubmit ❑ Approved as noted ❑ Submit ❑ Returned for corrections ❑ Return ® For Recording ❑ PRINTS RETURNED AFTER LOAN TO US copies for approval copies for distribution corrected prints SIGNED: Kim Meu isse , (952) 227-1107 If enclosures are not as noted, Kindly notify us at once. SCANNED 0 L CITY OF CHANHASSEN CARVER AND HENNEPIN COUNTIES, MINNESOTA INTERIM USE PERMIT #06-03 1. Permit. Subject to the terns and conditions set forth herein, the City of Chanhassen hereby grants an interim use permit for the following use: To permit the grading of approximately 3,400 cubic yards for an infiltration basin and drainage swales. 2. Property. The permit is for property situated in the City of Chanhassen, Carver County, Minnesota, and legally described as follows: Part of the SW 1/4 of the NW 1/4 of Section 3, Township 116, Range 23, Carver County, Minnesota 3. Conditions. The permit is issued subject to plans dated December 19, 2005 prepared by Larson Engineering of Minnesota and the following conditions: a. The applicant shall provide the City with a cash escrow or letter of credit in the amount of $5,600.00 to guarantee erosion control measures and site restoration and compliance with the interim use permit. b. Verify the existing 24 -inch culvert has sufficient capacity before replacing the private drive entrance. c. The applicant must provide a proposed haul route for review and approval. d. If fill is coming from and/or going to another site in Chanhassen, a separate grading permit will be required for the other property. e. All disturbed areas as a result of construction are required to be reseeded and mulched within two weeks of site grading. f. An erosion control blanket must be installed on all sides around the infiltration basin. All disturbed areas as a result of construction are required to be sodded or reseeded and mulched within two weeks of site grading. SCANNED 0 0 g. Submit a full size drainage area map. h. Add City Detail Plates Nos. 3101, 3102, 3103, 5300, 5301 and 5302. i. Show rock construction entrance per Detail Plate No. 5301. The applicant shall construct and maintain a rock construction access to the site. Access to the site shall be restricted to this access point only. j. The applicant shall obtain and comply with all permit requirements of the Watershed District and MnDOT. k. Revise the existing storm sewer flow direction in all plans to match. 1. The applicant shall supply the City with a mylar as -built survey prepared by a professional engineer upon completion of filling and/or excavation to verify the grading plan has been performed in compliance with the proposed plan. in. A plumbing permit must be obtained before installing the storm sewer piping. n. The applicant shall provide a cross section for the filtration area showing the elevation of the draintile and the trenches, as well as a cross section of the trench and details of the material used. The draintile trenches shall be lined with drainage fabric (4% to 6% open space) and filled with pea rock at a depth of at least 18 inches and 3 feet wide. The bottom of the entire filtration basin shall be backfilled with a mixture of 50% coarse clean sand, 25% compost, 25% loamy topsoil for a minimum depth of 6 inches (from approximately 1034.5 to 1035.0). The rest of the area shall be top - dressed with native topsoil. CB -1 shall be revised to be an open beehive inlet at an approximate elevation of 1037 for handling large storm event runoff if the calculations for rate control work out to avoid overwhelming the filtration area and having long periods (greater than 72 hours) of ponding. o. Erosion control blanket/turf reinforcement mat (NInDOT Category 5) shall be used for restoration of the exposed slope from the emergency overflow to the ditch along Highway 41 within 7 days of final grade. The blanket shall be specified and a detail provided. Erosion control blanket shall be installed on any exposed soils south of the private drive within 24 hours of final grade. p. A seed mix for shaded, wooded areas shall be specified in the plan, along with the proposed rate of application. A seed mix for the filtration area and slopes shall also be specified. q. The rip rap at the flared -end section at the south end of the 24 -inch pipe south of the private drive shall be replaced. r. Runoff from the storm sewer system from the school shall be controlled during construction. The water shall be conveyed through a non-erosive means to the Highway 41 ditch through the job site. `a s. Erosion control blanket category 2 or 3 shall be installed within the filtration area within 24 hours of connecting the 18 -inch PVC to the basin. The blanket shall be applied following a seeding. Remaining exposed soils on site shall be mulched and seeded or sodded within 14 days of final grade. t. The silt fence used shall be a City of Chanhassen type 1 silt fence; monofilament silt fence with metal T -posts, 6 foot maximum spacing and 3 plastic zip ties in the top 8 inches of the fabric. The silt fence specified for the filtration area shall be labeled as "Installed after drain tile installation." u. A rock construction exit pad shall be installed from the bituminous edge 40 to 50 feet long into the job site. v. Street sweeping shall be completed within 24 hours should soil be tracked upon paved surfaces. w. Catch basin inlet control shall be provided for the catch basins adjacent to the school building if tracking of soil becomes a problem on the paved surfaces. 4. Termination of Permit. The City may revoke the permit following a public hearing for violation of the terms of this permit. 5. Lapse. If within one year of the issuance of this permit the authorized construction has not been substantially completed or the use commenced, this permit shall lapse, unless an extension is granted in accordance with the Chanhassen Zoning Ordinance. 6. Criminal Penalty. Violation of the terms of this conditional use permit is a criminal misdemeanor. Dated: February 27, 2006 0 STATE OF MINNESOTA ) (ss COUNTY OF CARVER ) is CITY OF CHANHASSEN 'rte By: ✓ Thomas A. Furlong UA Gerhardt, City Manager The foregoing instrument was acknowledged before me this s44 day of r r,t4i , 2006, by Thomas A. Furlong, Mayor and Todd Gerhardt, City Manager, of the City of Chanhassen, a Minnesota municipal corporation, on behalf of the corporation and pursuant to authority granted by its City Council. Not blic DRAFTED BY: City of Chanhassen 7700 Market Boulevard*�lk KAREN J. ENGELHARDT P. O. Box 147 Notary Public -Minnesota Chanhassen, MN 55317 My Commieslon ExOrw Jan 31, 2010 (952)227-1100 0 CITY OF 7700 Market Boulevard PO Boz 147 Chanhassen, MN 55317 Administration Phone: 952.227.1100 Fax: 952.227.1110 Building Inspections Phone: 952 227.1180 Fax: 952.227.1190 Engineering Phone: 952.227.1160 Fax: 952.227.1170 Finance Phone: 952.227.1140 Fax: 952.227.1110 Park & Recreation Phone: 952.227.1120 Fax: 952.227.1110 Recreation Center 2310 Coulter Boulevard Phone: 952.227.1400 Fax: 952.227.1404 Planning & Natural Resources Phone: 952.227.1130 Fax: 952.227.1110 Public Works 1591 Park Road Phone: 952.227.1300 Fax: 952.227.1310 Senior Center Phone: 952.227.1125 Fax 952.227.1110 Web Site wwwci.danhassen.mn.us to MEMORANDUM TO: Todd Gerhardt, City Manager FROM: Bob Generous, Senior Planner DATE: February 27, 2006 b�- SUBJ: Minnetonka Middle School West Interim Use Permit Planning Case 06-03 EXECUTIVE SUMMARY The Minnetonka School District is requesting an interim use permit to grade approximately 3,400 cubic yards of material to construct an infiltration basin on the Minnetonka Middle School West property to address existing erosion problems and prevent future erosion and sedimentation into the downstream DNR State Protected Water (132 W). ACTION REQUIRED City Council approval requires a majority of City Council present. PLANNING COMMISSION SUMMARY The Planning Commission held a public hearing on February 7, 2006, to review the proposed development. The Planning Commission voted 6 to 0 to approve the proposed project subject to the conditions of the staff report. The Planning Commission minutes are item la of the February 27, 2006, City Council agenda. One question that a neighbor asked was whether trees would be replaced. The applicant does not intend to replace the trees that washed out. Those trees would be within MnDOT right-of-way as well as within the electric company easement. A second question was asked related to the drainage area involved. Staff has included the drainage area map to this memo. The area involved includes the south half of the building and a portion of the field. It does not include the bus area or the parking lot north of the school and fields. RECOMMENDATION Staff and the Planning Commission recommends adoption of the revised motion on pages 4 and 5 of the Planning Commission staff report approving the Interim Use Permit #06-03 to permit the grading of approximately 3,400 cubic yards for a infiltration basin and drainage swales, plans prepared by Larson Engineering of Minnesota, dated December 19, 2005. 06-03 The City of Chanhassen • A growing community with clean lakes, quality schools, a charming downtown, thriving businesses, winding trails, and beautiful parks. A great place to live, work, and play. Mr. Todd Hardt • Minnetonka Middle School West ILTP February 27, 2006 Page 2 ATTACHMENTS 1. Reduced Copy Drainage Area Plan. 2. Letter From Jonathan Osmond (MnDOT) to Robert Generous dated 1/30/06. 3. Letter from Robert C. Obermeyer to Mike Wyatt dated 2/1/06. 4. Planning Commission Staff Report Dated February 7, 2007. gAplan\2006 planning cases\06-03 minnetonka middle school west iup\ezecutive summary.doc 2MS DRAINAGE IMPROVEMENTS Ila DRAINAGE OREA MAP MINNETONNA MIDDLE SCHOOL WEST INOEPENDENT SCHOOL DISTRICT 6276 B l HAZ MNE BOULEVARD EXCELSIOR, MINNESOTA 55331 Larson Englooenng of Mlnne6ob maw Minnesota Dortment of Transportation • Metropolitan District Waters Edge 1500 West County Road B-2 Roseville MN 55113-3174 January 30, 2005 Mr. Robert Generous City of Chanhassen Planning Department 7700 Market Boulevard Chanhassen, MN 55317 RECOftIyED FEB 0 " 2006 CTyOFCHANHASSEN Subject: Minnetonka Middle School West Mn/DOT Review # S06-002 East side of TH 41 at the school entrance (South of Chaska Road) Chanhassen, Carver County Control Section 1008 Dear Mr. Generous: Thank you for the opportunity to review Minnetonka Middle School West. Mn/DOT's staff has reviewed the site plan and has the following comments: Right of Way The site plan does not adequately identify Trunk Highway 41 Right of Way. The final plat should identify the Right of Way by reference to the appropriate plat(s) and in place monuments. The distances from the acquisition center line and offset dimensions from the center line to the edge of the plat should also be identified. Access Control is not marked on the plat. Access Control should also be identified in the Final Plat. Please direct questions concerning these issues to Soosan Nichols (651- 634-2166) in Mn/DOT's Right of Way section. Surface Water Runoff A drainage permit will be required. Drainage information has been submitted and a drainage permit is currently pending (Permit #D-2005-11756). Please direct questions regarding drainage issues to Bryce Fossand (651-634-2408) of Mn/DOT's Water Resources Engineering Section. Permits Any use of or work within or affecting Mn/DOT right of way requires a permit. Permit forms are available from MnDOT's utility website at: www.dot.state.mn.us/tecsup/utility Please direct any questions regarding permit requirements to Buck Craig (651-582-1447) of MnDOT's Metro Permits Section. An equal opportunity employer Mn/DOT Review # S06-002 • 2 As a reminder, please address all initial future correspondence for development activity such as plats and site plans to: Development Reviews Coordinator Mn/DOT - Metro Division Waters Edge 1500 West County Road B-2 Roseville, Minnesota 55113 Mn/DOT document submittal guidelines require three (3) complete copies of plats and two (2) copies of other review documents including site plans. Failure to provide three (3) copies of a plat and/or two (2) copies of other review documents will make a submittal incomplete and delay Mn/DOT's review and response to development proposals. We appreciate your anticipated cooperation in providing the necessary number of copies, as this will prevent us from having to delay and/or return incomplete submittals. Feel free to contact me at (651) 634-2083 if you have any questions. Sincerely, i� Jonathan Osmo Transportatio lanner Cc: Michael A. Murphy, P.E., Larson Engineering of Minnesota Daniel L. Thurmes, L.S., Cornerstone Land Surveying, Inc. Copies to Mn/DOT Metro Division files: Mn/DOT Division File C.S. 1008 Mn/DOT LGL File - City of Chanhassen Copies distributed via Groupwise: Tod Sherman Cindy Carlsson Buck Craig Soosan Nichols Bryce Fossand Ann Braden / Metropolitan Council Michael A. Murphy, P.E. Larson Engineering of Minnesota 3524 Labore Road White Bear Lake, MN 55110 Daniel L. Thurmes, L.S. Cornerstone Land Surveying, Inc. 200 East Chestnut Street Stillwater, MN 55082 Riley LegaiAdvisor: Krebsbach and Haik, Ltd. 225 South Sixth Street, Suite 4320 Minneapolis, MN 55402 Purgatory 612 333-7400 Fax: 612 333-6959 B I u ff Creek Engineering Advisor: Barr Engineering 4700 West 77th Street 35 Watershed District Minneapolis, MIFax: 95 952 632-2600 Fax: 952 832-2601 Web Site: http//www.rileypurgatorybluffcreek.org February 1, 2006 Mir Mike Wyatt Minnehaha Creek Watershed District 18202 Minnetonka Boulevard Deephaven, MN 55391 Re: Drainage Improvements — Minnetonka Middle School West: Chanhassen Dear Mr. Wyatt: The Board of Managers of the Riley -Purgatory -Bluff Creek Watershed District has reviewed the plans and grading and land alteration permit application as submitted to the District for drainage improvements at Middle School Westin Chanhassen. Upon review of the information submitted, this project is within the legal boundaries of the Minnehaha Creek Watershed District; however, it drains to the Riley -Purgatory -Bluff Creek Watershed District. Minnehaha Creek is the permitting district with Riley -Purgatory -Bluff Creek providing a recommendation to Minnehaha. This project is consistent with District policy and criteria. If you have any questions regarding the conditions of the District's permit, please call us at 952-832-2600. Sincerely, R bertC. Obermeyer BARR ENGINEERING CO. Engineers for the District by the Board of Managers JRGA'COn BLOtF CREEK WATERSHED DISTRICT Date: c: Paul Haik Mark Dillon Mike Condon Mike Murphy Lori Hank✓ ::0DMA\PCD0CS\DoCS\246752\1 President lv, ZDo,( Board of Managers Howard Peterson Mark Dillon Conrad Fiskness Michael Casanova Erin Ahola F z U 0* a a F A W H i� STAFF REPORT PROPOSAL: Request for an interim use permit to permit over 1,000 cubic yards of grading. LOCATION: 6421 Hazeltine Boulevard (Highway 41). APPLICANT: Minnetonka Public Schools k� 5621 County Road 101 Minnetonka, MN 55345 (952)401-5039 PRESENT ZONING: Office & Institutional District, OI 2020 LAND USE PLAN: Public/Semi-Public ACREAGE: Approximately 40 DENSITY: N/A SUMMARY OF REQUEST: Request for an interim use permit to permit grading of approximately 3,400 cubic yards for the creation of a storm water infiltration basin. LEVEL OF CITY DISCRETION IN DECISION-MAKING: The City has limited discretion in approving or denying interim use permits, based on whether or not the proposal meets the use standards outlined in the Zoning Ordinance. If the City finds that all the applicable use standards are met, the permit must be approved. This is a quasi judicial decision. �OMIN Location Map Minnetonka Middle School West Interim Use Permit Planning Case No. 06-03 6421 Hazeltine Boulevard City of Chanhassen State Hwy 7 Q SUBJECT PROPERTY Lake Minnewashm 0 Planning Commission 0 Minnetonka Middle School West IUP Planning Case No. 06-03 February 7, 2006 Page 2 of 5 PROPOSAL The Minnetonka School District is requesting an interim use permit to grade approximately 3,400 cubic yards of material to construct an infiltration basin on the Minnetonka Middle School West property to reduce downstream erosion and sedimentation along Highway 41. Staff is recommending approval of the interim use permit subject to the conditions of the staff report. APPLICABLE REGUATIONS Chapter 7, Article III, Excavating, Mining, Filling and Grading Chapter 20, Article IV, Division 2, Conditional Use Permits Chapter 20, Article IV, Division 5, Interim Use Permits BACKGROUND On June 9, 2003, City Council approved Interim Use Permit #2003-2 to permit grading in excess of 1,000 cubic yards to install a storm water pond and reconfigure the bus circulation route and parking area on the north side of the school. ANALYSIS GRADING/DRAINAGE/EROSION CONTROL The applicant is requesting an interim use permit to grade approximately 3,400 cubic yards of material to construct an infiltration basin on the existing school property to reduce downstream erosion and sedimentation along Highway 41. The site drains from east to west, via an existing swale and two storm sewer lines, toward the existing ditch along Highway 41. The swale is proposed to be filled and the 125 -foot long existing southern storm sewer will be removed. The plans show a proposed infiltration basin with three rows of 4 -inch draintile. The infiltration basin will receive drainage from the east side of the site and the existing building's roof and discharge to the Highway 41 ditch through an 8 -inch PVC pipe. The applicant must verify that the existing 24 -inch culvert along Highway 41 has sufficient capacity before replacing the private drive entrance. The applicant should be aware that if the fill is coming from and/or going to another site in Chanhassen, a separate grading permit will be required for the other property. Staff has not yet received a proposed haul route as required. Staff is recommending that the applicant provide a proposed haul route for review and approval. The hauling operation is anticipated to begin as soon as permit approval is obtained. Permitted hours of operation will be 7:00 a.m. to 6:00 p.m., Monday through Friday, and 9:00 a.m. to 5:00 p.m. on Saturday with no work permitted on Sunday or legal holidays. The applicant should be aware that any off-site grading will require an easement from the appropriate property owner. Erosion control has been shown on the plan in accordance with the City's Standard Detail Plates. Staff recommends that an erosion control blanket be installed on the sides of the infiltration basin. All Planning Commission 0 Minnetonka Middle School West IUP Planning Case No. 06-03 February 7, 2006 Page 3 of 5 disturbed areas as a result of construction are required to be sodded or reseeded and mulched within two weeks of site grading. An interim use permit expires one year from the date of approval from the City Council. The permit may be renewed, however, on an annual basis subject to City Council approval. The applicant will need to request a formal extension 45 days prior to the expiration date. Financial security to guarantee restoration and erosion control measures will be required with the permit. STORM WATER MANAGEMENT The applicant should provide a cross section for the filtration area showing the elevation of the draintile and the trenches, as well as a cross section of the trench and details of the material used. The draintile trenches should be lined with drainage fabric (4% to 6% open space) and filled with pea rock at a depth of at least 18 inches and 3 feet wide. The bottom of the entire filtration basin should be backfilled with a mixture of 50% coarse clean sand, 25% compost, 25% loamy topsoil for a minimum depth of 6 inches (from approximately 1034.5 to 1035.0). The rest of the area should be top -dressed with native topsoil. CB -1 should be revised to be an open beehive inlet at an approximate elevation of 1037 for handling large storm event runoff if the calculations for rate control work out to avoid overwhelming the filtration area and having long periods (greater than 72 hours) of ponding. EROSION AND SEDIMENT CONTROL Erosion control blanket/turf reinforcement mat (MnDOT Category 5) should be used for restoration of the exposed slope from the emergency overflow to the ditch along Highway 41 within 7 days of final grade. The blanket should be specified and a detail provided. Erosion control blanket will also be needed for any exposed soils south of the private drive within 24 hours of final grade. A seed mix for shaded, wooded areas is needed. A seed mix should be specified in the plan with the rate of application. A seed mix for the filtration area and slopes will also be needed. The rip rap at the flared -end section at the south end of the 24 -inch pipe south of the private drive should be replaced. Runoff from the storm sewer system from the school should be controlled during construction. The water should be conveyed through a non-erosive means to the Highway 41 ditch through the job site. A temporary slope drain or bypass pipe may be an option. (This could be a flexible temporary pipe placed down the slope to the ditch with energy dissipation at the discharge point.) Erosion control blanket category 2 or 3 is needed for the filtration area within 24 hours of connecting the 18 -inch PVC to the basin. The blanket must be applied following a seeding. Remaining exposed soils on site must be mulched and seeded or sodded within 14 days of final grade. The silt fence used must be a City of Chanhassen Type I silt fence; monofilament silt fence with metal T -posts, 6 -foot maximum spacing and 3 plastic zip ties in the top 8 inches of the fabric. The silt fence specified for the filtration area should be labeled as "Installed after drain tile installation." A rock construction exit pad is needed from the bituminous edge 40 to 50 feet long into the job site. Street sweeping will be needed within 24 hours should soil be tracked upon paved surfaces. Catch basin inlet control should be provided for the catch basins adjacent to the school building if tracking of soil becomes a problem on the paved surfaces. Planning Commission • Minnetonka Middle School West NP Planning Case No. 06-03 February 7, 2006 Page 4 of 6 RECOMMENDATION Staff recommends that the Planning G@__.: - City Council adopt the following motion: "The Chanhassen City Council approves e€ Interim Use Permit #106-03 to permit the grading of approximately 3,400 cubic yards for a infiltration basin and drainage swales, plans prepared by Larson Engineering of Minnesota, dated December 19, 2005 subject to the following conditions: 1. The applicant shall provide the City with a cash escrow or letter of credit in the amount of $5,600.00 to guarantee erosion control measures and site restoration and compliance with the interim use permit. 2. Verify the existing 24 -inch culvert has sufficient capacity before replacing the private drive entrance. 3. The applicant must provide a proposed haul route for review and approval. 4. If fill is coming from and/or going to another site in Chanhassen, a separate grading permit will be required for the other property. 5. All disturbed areas as a result of construction are required to be reseeded and mulched within two weeks of site grading. 6. An erosion control blanket must be installed on all sides around the infiltration basin. All disturbed areas as a result of construction are required to be sodded or reseeded and mulched within two weeks of site grading. 7. Submit a full size drainage area map. 8. Add City Detail Plates Nos. 3101, 3102, 3103, 5300, 5301 and 5302. 9. Show rock construction entrance per Detail Plate No. 5301. The applicant shall construct and maintain a rock construction access to the site. Access to the site shall be restricted to this access point only. 10. The applicant shall obtain and comply with all permit requirements of the Watershed District and MnDOT. 11. Revise the existing storm sewer flow direction in all plans to match. 12. The applicant shall supply the City with a mylar as -built survey prepared by a professional engineer upon completion of filling and/or excavation to verify the grading plan has been performed in compliance with the proposed plan. 13. A plumbing permit must be obtained before installing the storm sewer piping. Planning Commission 0 Minnetonka Middle School West IUP Planning Case No. 06-03 February 7, 2006 Page 5 of 6 14. The applicant shall provide a cross section for the filtration area showing the elevation of the dralntile and the trenches, as well as a cross section of the trench and details of the material used. The draintile trenches shall be lined with drainage fabric (4% to 6% open space) and filled with pea rock at a depth of at least 18 inches and 3 feet wide. The bottom of the entire filtration basin shall be backfilled with a mixture of 50% coarse clean sand, 25% compost, 25% loamy topsoil for a minimum depth of 6 inches (from approximately 1034.5 to 1035.0). The rest of the area shall be top -dressed with native topsoil. CB -I shall be revised to be an open beehive inlet at an approximate elevation of 1037 for handling large storm event runoff if the calculations for rate control work out to avoid overwhelming the filtration area and having long periods (greater than 72 hours) of ponding. 15. Erosion control blanket/turf reinforcement mat (MnDOT Category 5) shall be used for restoration of the exposed slope from the emergency overflow to the ditch along Highway 41 within 7 days of final grade. The blanket shall be specified and a detail provided. Erosion control blanket shall be installed on any exposed soils south of the private drive within 24 hours of final grade. 16. A seed mix for shaded, wooded areas shall be specified in the plan, along with the proposed rate of application. A seed mix for the filtration area and slopes shall also be specified 17. The rip rap at the flared -end section at the south end of the 24 -inch pipe south of the private drive shall be replaced. 18. Runoff from the storm sewer system from the school shall be controlled during construction. The water shall be conveyed through a non-erosive means to the Highway 41 ditch through the job site. 19. Erosion control blanket category 2 or 3 shall be installed within the filtration area within 24 hours of connecting the 18 -inch PVC to the basin. The blanket shall be applied following a seeding. Remaining exposed soils on site shall be mulched and seeded or sodded within 14 days of final grade. 20. The silt fence used shall be a City of Chanhassen type 1 silt fence; monofilament silt fence with metal T -posts, 6 foot maximum spacing and 3 plastic zip ties in the top 8 inches of the fabric. The silt fence specified for the filtration area shall be labeled as "Installed after drain tile installation." 21. A rock construction exit pad shall be installed from the bituminous edge 40 to 50 feet long into the job site. 22. Street sweeping shall be completed within 24 hours should soil be tracked upon paved surfaces. 23. Catch basin inlet control shall be provided for the catch basins adjacent to the school building if tracking of soil becomes a problem on the paved surfaces." ATTACHMENTS 1. Findings of Fact and Recommendation. 2. Development Review Application. 3. Reduced Copy Topographic Survey. 4. Reduced Copy Grading and Erosion Control Plan. Planning Commission 0 Minnetonka Middle School West NP Planning Case No. 06-03 February 7, 2006 Page 6 of 6 5. Reduced Copy Utility Plan. 6. Public Hearing Notice Affidavit of Mailing. gAp1an\2006 planning cas \06-03 minnetonka middle school west iup\staff report mtka middle school wmt.dac CITY OF CHANHASSEN CARVER AND HENNEPIN COUNTIES, MINNESOTA FINDINGS OF FACT AND RECOMMENDATION PR t Application of Minnetonka School District for an Interim Use Permit to permit the grading of approximately 3,400 cubic yards for the creation of a storm water retention pond — Planning Case No. 06-03. On February 7, 2006, the Chanhassen Planning Commission met at its regularly scheduled meeting to consider the application of Minnetonka School District for an interim use permit for the property located at 6421 Hazeltine Boulevard (Highway 41). The Planning Commission conducted a public hearing on the proposed interim use which was preceded by published and mailed notice. The Planning Commission heard testimony from all interested persons wishing to speak and now makes the following: FINDINGS OF FACT The property is currently zoned Office & Institutional District, OI. 2. The property is guided by the Land Use Plan for Public/Semi-Public use. 3. The legal description of the property is: Part of the SW 1/4 of the NW 1/4 of Section 3, Township 116, Range 23, Carver County, Minnesota. 4. When approving an interim use permit the City follows the standards for conditional use permits. The City must determine the capability of a proposed development with existing and proposed uses. The city makes the following findings: a. The proposed use will not be detrimental to the public health, safety, comfort, convenience or general welfare of the neighborhood or the city, but will enhance drainage and erosion issues in the area. b. The proposed use will be consistent with the objectives of the city's comprehensive plan and the Chanhassen City Code. 6-7 c. The proposed use will be designed, constructed, operated and maintained so to be compatible in appearance with the existing or intended character of the general vicinity and will not change the essential character of that area. d. The proposed use will not be hazardous or disturbing to existing or planned neighboring uses. e. The proposed use will be served adequately by essential public facilities and services, including streets, police and fire protection, drainage structures, refuse disposal, water and sewer systems and schools; or will be served adequately by such facilities and services provided by the persons or agencies responsible for the establishment of the proposed use. f. The proposed use will not create excessive requirements for public facilities and services and will not be detrimental to the economic welfare of the community. g. The proposed use will not involve uses, activities, processes, materials, equipment and conditions of operation that will be detrimental to any persons, property or the general welfare because of excessive production of traffic, noise, smoke, fumes, glare, odors, rodents, or trash. h. The proposed use will have vehicular approaches to the property which do not create traffic congestion or interfere with traffic or surrounding public thoroughfares. i. The proposed use will not result in the destruction, loss or damage of solar access, natural, scenic or historic features of major significance. j. The proposed use will be aesthetically compatible with the area. k. The proposed use will not depreciate surrounding property values. I. The proposed use will meet standards prescribed for certain uses as provided in the City Code. 5. The planning report #06-03 dated February 7, 2006, prepared by Robert Generous, et al, is incorporated herein. 0 0 The Planning Commission recommends that the City Council approve the interim use permit. ADOPTED by the Chanhassen Planning Commission this 7's day of February, 2006. CHANHASSEN PLANNING COMNUSSION M Its Chairman 3 0 • CITY OF CHANHASSEN 7700 Market Boulevard - P.O. Box 147 Chanhassen, MN 55317 - (952) 227-1100 DEVELOPMENT REVIEW APPLICATION Planning Case No. (G - Q CIT/ OF CHANHASSEN RECEIVED JAN 1 0 2006 PLEASE PRINT t;MNMAn =nru+nnm l Applicant Name and Address: Owner Name and Address: /LJiNNb�tn/.� .%lBUG •5/�nvL�v 5b-iy�asFD /01 j 5 Contact nl Contact: Phone v 4o1- go Fax: Phone: Fax: Email: Email: NOTE: Consultation with City staff is required prior to submittal, including review of development plans Comprehensive Plan Amendment Conditional Use Permit (CUP) Interim Use Permit (IUP) Non -conforming Use Permit Planned Unit Development* Rezoning Sign Permits Sign Plan Review Site Plan Review (SPR)' Subdivision' Temporary Sales Permit Vacation of Right-of-Way/Easements (VAC) Variance (VAR) Wetland Alteration Permit (WAP) Zoning Appeal Zoning Ordinance Amendment __.eK Notification Sign - $200 (City to install and remove) X Es w for Filing Fees/Attorney Cost" 50 UP/SPRNACNAR/WAP/Metes & Bounds O Minor SUB � q zig cr- —i TOTAL FEE $ §fpt 05fxl 2-00 C4 40Zt I An additional fee of $3.00 per address within the public hearing notification area will be prior to the public hearing. to the annlicant 'Sixteen (16) full-size folded copies of the plans must be submitted, including an 81/:" X 11" reduced copy for each plan sheet along with a digital copy in TIFF -Group 4 (t.tif) format. "Escrow will be required for other applications through the development contract. Building material samples must be submitted with site plan reviews. NOTE: When multiple applications are processed, the appropriate fee shall be charged for each application. SCANNED PROJECT NAME: zknzi17b/w m�/ /l�L)lr; L bl�iNAG� /.�lP�✓itffn/r� LOCATION: G42� �A� TINF� Y?lLEr//�GI� LEGAL DESCRIPTION: PST -WIi4/7�- LVW114 fi—� 157,`G77d1/3 T/iGL l�evE-•,e [ .Im/ R/V / J TOTALACREAGE: WETLANDS PRESENT: YES / NO PRESENT ZONING: REQUESTED ZONING: PRESENT LAND USE DESIGNATION: REQUESTED LAND USE DESIGNATION: REASON FOR REQUEST: " &a -M This application must be completed in full and be typewritten or clearly printed and must be accompanied by all information and plans required by applicable City Ordinance provisions. Before filing this application, you should confer with the Planning Department to determine the specific ordinance and procedural requirements applicable to your application. A determination of completeness of the application shall be made within 15 business days of application submittal. A written notice of application deficiencies shall be mailed to the applicant within 15 business days of application. This is to certify that I am making application for the described action by the City and that I am responsible for complying with all City requirements with regard to this request. This application should be processed in my name and I am the party whom the City should contact regarding any matter pertaining to this application. I have attached a copy of proof of ownership (either copy of Owner's Duplicate Certificate of Title, Abstract of Title or purchase agreement), or I am the authorized person to make this application and the fee owner has also signed this application. I will keep myself informed of the deadlines for submission of material and the progress of this application. I further understand that additional fees may be charged for consulting fees, feasibility studies, etc. with an estimate prior to any authorization to proceed with the study. The documents and information I have submitted are true and correct to the best of my knowledge. Signature of Applicant Dat Signature of Fee Owner Date G:\pLAN\formslDevelopment Review Application.DOC Rev. 12105 SCANNED w LLCSS Y1053NNIW bdSl3J%3 � � U r ��1� OabA3111053NLLl3ZVH LLV9 gpplWwIIp �IM�3 8/281'.1M181O lDOHJ51N30N3d30N1 U04J87 ® 13nans dNaraoodoa as3ra �ooHos 3�adn vNNoa3Nww iHwsaaaao� NouranlevH3a n3aas naols lose 8 5 3 tjo z fil III EtE UA € E' 8"s g3js_8. �5=a'.,s..�sS��ui-,.3 � @ i s{i I I` at II 11'IN �I(Ilul, F �3� •4'. r1�..1 � e��tl 4 } a jilt It a Hy -74 v4s ' e a III_ �. ,�' ,;, � ,.• 5�3 W a[ 1 s` ZjWwZD q unr's� �. -. LttSi Y1053NNIW YlO1 t (� 3N32tlLL6B LLlH LZ" Ypgg ��3 ® Lp �,y„yyg HYIA IOWNOJ HpI$Oy30NY OHIOYM'> 9Li61JRI1SIO lODHJ=Ghf3d30N1 143M lOOHJS 3lOO1W"NO1 NNIW 1a. aa04i� Yi SLN3W Obdnl sv"M G sm y3 z Irk; eg "Tf L , Z- 4vIf' ' ti4 II 16•%ii�'� s l-�+�I \ a,11s El \�I11I�i1 v \tai � '��' • i , i � •� i ' �"�,'�Y A yl4;. I 1 ) KJ f',' /' - •I �1 \111 i� ------------------ ed _-__f t ZjWwZD q v y fri� a WO 4 Y6 Z2_ WD a Ypgg ��3 j g f a9 6 1a. y3 z -ri 4SAFo ED t q v y fri� a WO 4 Y6 Z2_ WD a Ypgg ��3 j g f a9 6 1a. y3 z -ri d ON Ypgg ��3 , h «Q \ � ^ }J�� y ' { 0 ifNN' ` ^ 1 \ iG /if f ` ` • }} � }\ � ^ }J�� y ' { 0 0 0 CITY OF CHANHASSEN AFFIDAVIT OF MAILING NOTICE STATE OF MINNESOTA) ) ss. COUNTY OF CARVER ) I, Karen J. Engelhardt, being first duly sworn, on oath deposes that she is and was on January 26, 2006, the duly qualified and acting Deputy Clerk of the City of Chanhassen, Minnesota; that on said date she caused to be mailed a copy of the attached notice of Public Hearing for Minnewashta Middle School West Interim Use Permit — Planning Case No. 06- 03 to the persons named on attached Exhibit "A", by enclosing a copy of said notice in an envelope addressed to such owner, and depositing the envelopes addressed to all such owners in the United States mail with postage fully prepaid thereon; that the names and addresses of such owners were those appearing as such by the records of the County Treasurer, Carver County, Minnesota, and by other appropriate records. Subscribed and sw to before me thibday of , 2006. Notary Q.tR� KarrA J. Eng4jrdt, DeVaty Clerk KIM T MEUWISSEN 3 Notary Public-Minnesota .._— My Commission Expires Jan 31, 2010 BCANNED Notice of Public Hearing Chanhassen Planning Commission Meeting Date & Tlme: Tuesday, February 7, 2006 at 7:00 p.m. Location: City Hall Council Chambers, 7700 Market Blvd. Request for an Interim Use Permit to permit over 1,000 cubic Proposal: yards of grading on property zoned Office& Institutional district — MINNETONKA MIDDLE SCHOOL WEST Planning File: 06-03 Applicant: Independent School District No. 276 Property 6421 Hazeltine Blvd. (Highway 41) Location: I A location map Is on the reverse side of this notice. The purpose of this public hearing is to inform you about the applicant's request and to obtain input from the neighborhood about this project. During the meeting, the Chair will lead the public hearing through the following steps: What Happens at the Meeting: 1. Staff will give an overview of the proposed project. 2. The applicant will present plans on the project. 3. Comments are received from the public. 4. Public hearing is closed and the Commission discusses the project. If you want to see the plans before the meeting, please stop by City Hall during office hours, 8:00 a.m. to 4:30 p.m., Monday through Friday. If you wish to talk to someone about this project, please contact Robert Generous at 952-227-1131 Questions & or e-mail boenerous@ci.chanhassen.mn.us. If you choose to Comments: submit written comments, it is helpful to have one copy to the department in advance of the meeting. Staff will provide copies to the Commission. The staff report for this Item will be available online at http://206.10.76.6(webllnk7 the Thursday prior to the Planning Commission meeting. City Review Procedure: • Subdivisions, Planned Unit Developments, Site Plan Reviews, Conditional and Interim Uses, Welland Alterations, Rezonings, Comprehensive Plan Amendments and Code Amendments require a public hearing before the Planning Commission. City ordinances require all property within 500 feet of the subject site to be notified of the application in writing. Any interested party is Invited to attend the meeting. • Staff prepares a report on the subject application that Includes all pertinent information and a recommendation. These reports are available by request. At the Planning Commission meeting, staff will give a verbal overview of the report and a recommendation. The Item will be opened for the public to speak about the proposal as a part of the hearing process. The Commission will close the public hearing and discuss the item and make a recommendation to the City Council. The City Council may reverse, affirm or modify wholly or partly the Planning Commission's recommendation. Rezonings, land use and code amendments take a simple majority vote of the City Council except rezonings and land use amendments from residential to commercial/industrial. • Minnesota State Statute 519.99 requires all applications to be processed within 60 days unless the applicant waives this standard. Some applications due to their complexity may take several months to complete. Any person wishing to follow an Item through the process should check with the Planning Department regarding its status and scheduling for the City Council meeting. • A neighborhood spokesperson/representative is encouraged to provide a contact for the city. Often developers are encouraged to meet with the neighborhood regarding their proposal. Staff is also available to review the project with any interested person(s). • Because the Planning Commission holds the public hearing, the City Council does not. Minutes are taken and any correspondence regarding the application will be included in the report to the City Council. If you wish to have something to be included in the report, lease contact the Planning Staff person named on the notification. Notice of Public Hearing Chanhassen Planning Commission Meeting Date & Time: Tuesday, February 7, 2006 at 7:00 p.m. Location: City Hall Council Chambers, 7700 Market Blvd. Request for an Interim Use Permit to permit over 1,000 cubic Proposal: yards of grading on property zoned Office& Institutional district — MINNETONKA MIDDLE SCHOOL WEST Planning File: 06-03 Applicant: Independent School District No. 276 Property 6421 Hazeltine Blvd. (Highway 41) Location: A location map Is on the reverse side of this notice. The purpose of this public hearing is to inform you about the applicant's request and to obtain input from the neighborhood about this project. During the meeting, the Chair will lead the public hearing through the following steps: What Happens at the Meeting: 1. Staff will give an overview of the proposed project. 2. The applicant will present plans on the project. 3. Comments are received from the public. 4. Public hearing is closed and the Commission discusses the project. If you want to see the plans before the meeting, please stop by City Hall during office hours, 8:00 a.m. to 4:30 p.m., Monday through Friday. If you wish to talk to someone about this project, please contact Robert Generous at 952-227-1131 Questions & or e-mail bbaenerous@ci.chanhassen.mn.us. If you choose to Comments: submit written comments, it is helpful to have one copy to the department in advance of the meeting. Staff will provide copies to the Commission. The staff report for this item will be available online at http://206.10.76.6/weblink7 the Thursday prior to the Planning Commission meeting. City Review Procedure: Ar • Subdivisions, Planned Unit Developments, Site Plan Reviews, Conditional and Interim Uses, Wetland Altera Rezonings, Comprehensive Plan Amendments and Code Amendments require a public hearing before the Planning Commission. City ordinances require all property within 500 feet of the subject site to be notified of the application in writing. Any interested party is invited to attend the meeting. • Staff prepares a report on the subject application that includes all pertinent information and a recommendation. These reports are available by request. At the Planning Commission meeting, staff will give a verbal overview of the report and a recommendation. The item will be opened for the public to speak about the proposal as a part of the hearing process. The Commission will close the public hearing and discuss the item and make a recommendation to the City Council. The City Council may reverse, affirm or modify wholly or partly the Planning Commission's recommendation. Rezonings, land use and code amendments take a simple majority vote of the City Council except rezonings and land use amendments from residential to commerciaUndustrial. • Minnesota State Statute 519.99 requires all applications to be processed within 60 days unless the applicant waives this standard. Some applications due to their complexity may take several months to complete. Any person wishing to follow an item through the process should check with the Planning Department regarding its status and scheduling for the City Council meeting. • A neighborhood spokesperson/representative is encouraged to provide a contact for the city. Often developers are encouraged to meet with the neighborhood regarding their proposal. Staff is also available to review the project with any interested person(s). • Because the Planning Commission holds the public hearing, the City Council does not. Minutes are taken and any correspondence regarding the application will be included in the report to the City Council. If you wish to have something to be included in the report, lease contact the Plannina Staff person named on the notification. This map is neither a legally recorded map nor a survey and is trot intended to be used as one. This map is a cortpilagon of records, intomr-I and data located in various city, county. state and federal offices and other sources regarding the area shown, and is to be used for reference purposes onty. The City does not wamdnt that the Geographic Infonretion System (GIS) Data used to prepare this mi are error free, and the City Was not represent that the GIS Data can be used for navigational, tracking or any other purpose requiring enacting meawrement of distance or direction or precision in the depiction nt geographic features. If emm or discrepancies are found please contact 952-227-1107. The practicing disclaimer is provided W rsuant to Minnesota Statutes §466.03, Subd- 21 (2000). and the user of this map acknowledges that the City shall not W liable for any damages. and expressly waives all dans, and agrees to defend, indermify, and had harmless the Gty from any and all dens brought by User, its employees or agents, or MirC parties which arse out a gle user's access or use of data provided. The map is neither a legally recorded map nor a survey and is nor intended to be used as one. This map is a compilation of moods, mform ion and data located in various city, county, state and federal offices and anter, spumes regarding the area shovm, and is to be used for reference purposes only. The CM does not warrent that the Geographic Infomudon System (GIS) Data used to prepare this map are error hem, antl the City does not represent that the GIS Data can be used for navigational. tracking or any other purpose requiring enacting measurement of distance or direction or precision in the depiction of geographic features. If errors or discrepancies are found pease contact 952-227-1107. The preceding disclaimer is provided pursuant to Minnesota Statutes §466.03, Subd. 21 (2000), and the user of this map acknowledges that the City shall not bo liable for any damages, and expressly waves all darts, and agrees to defend, indemnify, and had harmless the City from any and ad dams brought by User, its employees or agents, or Mind parties which arise out of the user's ecus or use of data proyided. 0 7 & 41 CROSSINGS CENTER LTD GEORGE & BEULAH G BAER THOMAS & VIRGINIA A RODE 3800 AMERICAN BLVD W 6300 CHASKA RD 6275 CHASKA RD BLOOMINGTON, MN 55431 -4552 EXCELSIOR. MN 55331 -8825 EXCELSIOR, MN 55331 -8824 RICHARD D & JOYCE H MCFARLAND DEBRA LEIGH THOMASSON-HIGGINS GARY S BRUNSVOLD 6341 MURRAY HILL RD 6285 CHASKA RD 6287 CHASKA RD EXCELSIOR, MN 55331 -8832 EXCELSIOR, MN 55331 -8824 EXCELSIOR, MN 55331 -8824 LYNDA M KUZMA PERRY C HARRISON CLAUDE W & KAYE L BENSON 2241 SOMMERGATE 2221 SOMMERGATE 2211 SOMMERGATE EXCELSIOR , MN 55331 -8800 EXCELSIOR, MN 55331 -8800 EXCELSIOR , MN 55331 -8800 MICHAEL C & MARGARET L BUCHNER MARK L & CAROL J RIESE MARK S & LORENA M FLANNERY 2191 SOMMERGATE 6320 MURRAY HILL RD 2350 MELODY HILL RD EXCELSIOR , MN 55331 -8917 EXCELSIOR. MN 55331 -8834 EXCELSIOR . MN 55331 -8893 CHAPMAN & LAUREL M ACHEN ROR INC DAVID L & MARY JO WILLADSEN 2231 SOMMERGATE 2461 64TH ST W 2325 MELODY HILL RD EXCELSIOR , MN 55331 -8800 EXCELSIOR, MN 55331 -8809 EXCELSIOR, MN 55331 -8894 TIMOTHY C & ANN S GRAHAM CHARLES R & JOANNE F LEWELLEN NANCY JO PERKINS-BROOKS 2300 MELODY HILL RD 6340 MURRAY HILL RD 2448 64TH ST W EXCELSIOR, MN 55331 -8893 EXCELSIOR. MN 55331 -8834 EXCELSIOR, MN 55331 -8808 BRYAN P & ELIZABETH WUTZKE LESLIE A POLTRACK & ROBERT E LEE III 2280 MELODY HILL RD ALICE M HAUSLADEN 2250 MELODY HILL RD EXCELSIOR , MN 55331 -8891 164 DOUD DR EXCELSIOR , MN 55331 -8891 LOS ALTOS. CA 94022 -2369 KAREN SIGNE PETERSON GREG GOLMEN & MICHELLE M CURTIS 2240 MELODY HILL RD JUNE HOFF-GOLMEN 2446 64TH ST W EXCELSIOR, MN 55331 -8891 2220 MELODY HILL RD EXCELSIOR, MN 55331 -8808 EXCELSIOR, MN 55331 -8891 THEODORE DORENKAMP II & MARK P GUSTAFERRO & MATTHEW R HANSON & BONITA JANE DORENKAMP BARBARA -ANN C GUSTAFERRO JENNIFER M HANSON 6370 MURRAY HILL RD 6366 MELODY LN 6378 MELODY LN EXCELSIOR , MN 55331 -8834 EXCELSIOR. MN 55331 -6402 EXCELSIOR, MN 55331 -6402 WAYNE PETERSON & JAMES J & PHILIPPA YOWAN THOMAS G & NEYSA L WINTERER KELLY WATSON 6361 MELODY LN 2210 MELODY HILL RD 2444 64TH ST W EXCELSIOR, MN 55331 -6405 EXCELSIOR, MN 55331 -8891 EXCELSIOR. MN 55331 -8808 ROBERT & JERI LOU PRCHAL BENJAMIN & H GOWEN BRIAN D & KRISTINE V MCMENAMIN 2150 MURRAY HILL CT 6440 HAZELTINE BLVD 6393 MELODY LN EXCELSIOR, MN 55331 -8882 EXCELSIOR, MN 55331 -8049 EXCELSIOR, MN 55331 -6405 RICHARD D BLISS & 10SPRING HOMES INC MYKE L & LYNN S MILLER GAIL ANN PRATT 622 82ND ST W 6405 MELODY LN 6400 MELODY LN CHASKA , MN 55318 -4600 EXCELSIOR, MN 55331 -6404 EXCELSIOR, MN 55331 -6403 GREGORY I & JULIE M NELSON JANE QUILLING REVSBECH GILBERT H & JILLENE KREIDBERG 2165 MURRAY HILL CT 2155 MURRAY HILL CT TRUSTEES OF TRUSTS EXCELSIOR, MN 55331 -8882 EXCELSIOR, MN 55331 -8882 6444 MURRAY HILL RD EXCELSIOR. MN 55331 -8994 JOHN D & KATHRYN D DESMET JOHN J & LYNNETTE J DELUCA RICHARD & BARBARA D ATHERTON 6454 MURRAY HILL RD 6484 MURRAY HILL RD 2082 65TH ST W EXCELSIOR, MN 55331 -8994 EXCELSIOR, MN 55331 -8994 EXCELSIOR, MN 55331 -9005 CARVER COUNTY CAROL ASLESEN CHILD RICHARD E & KAREN HERRBOLDT CARVER COUNTY GOVT CTR -ADMIN 6482 MURRAY HILL RD 6464 MURRAY HILL RD 600 4TH ST E EXCELSIOR, MN 55331 -8994 EXCELSIOR , MN 55331 -8994 CHASKA , MN 55318 -2102 DOUGLAS V SCHROEDER DENNIS M & JOAN E CLARK CHARLES R & KATHLEEN J MOWREY PO BOX 625 6651 HAZELTINE BLVD 6610 BRENDEN CT CHANHASSEN , MN 55317 -0625 EXCELSIOR, MN 55331 -8039 CHANHASSEN , MN 55317 -7560 JOHN A & DEBORAH S MASCHOFF MARK CONRAD GREGERSON DAVID L & HOLLY J JESSEN 6613 BRENDEN CT 6633 BRENDEN CT 6618 BRENDEN CT CHANHASSEN , MN 55317 -7560 CHANHASSEN , MN 55317 -7560 CHANHASSEN , MN 55317 -7560 PAUL J & KRISTI L BORCHERT WILLIAM 0 & KRISTEN K FLANAGAN MICHAEL L & AMY C DEGENEFFE 6636 BRENDEN CT 6653 BRENDEN CT 6654 BRENDEN CT CHANHASSEN , MN 55317 -7560 CHANHASSEN , MN 55317 -7560 CHANHASSEN , MN 55317 -7560 DAN V & CYNTHIA M SEEMANJOSEPH R COOK & THOMAS &MARY KUHN 6673 BRENDEN CIR 6693 BRENDEN CT KATHLEEN L TINGTON CHANHASSEN , MN 55317 -7560 CHANHASSEN , MN 55317 -7560 6672 BRENDENN CCT CHANHASSEN . MN 55317 -7560 JOHN T & ANNE C CARTER ANDREW G SEIFERT & CHARLES G GOERS SR 6390 MELODY LN RENEE B WILSON 2160 MURRAY HILL CT EXCELSIOR, MN 55331 -6402 6377 MELODY LN EXCELSIOR, MN 55331 -8882 EXCELSIOR, MN 55331 -6405 ROBERT & JERI LOU PRCHAL BENJAMIN & H GOWEN BRIAN D & KRISTINE V MCMENAMIN 2150 MURRAY HILL CT 6440 HAZELTINE BLVD 6393 MELODY LN EXCELSIOR, MN 55331 -8882 EXCELSIOR, MN 55331 -8049 EXCELSIOR, MN 55331 -6405 RICHARD D BLISS & 10SPRING HOMES INC MYKE L & LYNN S MILLER GAIL ANN PRATT 622 82ND ST W 6405 MELODY LN 6400 MELODY LN CHASKA , MN 55318 -4600 EXCELSIOR, MN 55331 -6404 EXCELSIOR, MN 55331 -6403 GREGORY I & JULIE M NELSON JANE QUILLING REVSBECH GILBERT H & JILLENE KREIDBERG 2165 MURRAY HILL CT 2155 MURRAY HILL CT TRUSTEES OF TRUSTS EXCELSIOR, MN 55331 -8882 EXCELSIOR, MN 55331 -8882 6444 MURRAY HILL RD EXCELSIOR. MN 55331 -8994 JOHN D & KATHRYN D DESMET JOHN J & LYNNETTE J DELUCA RICHARD & BARBARA D ATHERTON 6454 MURRAY HILL RD 6484 MURRAY HILL RD 2082 65TH ST W EXCELSIOR, MN 55331 -8994 EXCELSIOR, MN 55331 -8994 EXCELSIOR, MN 55331 -9005 CARVER COUNTY CAROL ASLESEN CHILD RICHARD E & KAREN HERRBOLDT CARVER COUNTY GOVT CTR -ADMIN 6482 MURRAY HILL RD 6464 MURRAY HILL RD 600 4TH ST E EXCELSIOR, MN 55331 -8994 EXCELSIOR , MN 55331 -8994 CHASKA , MN 55318 -2102 DOUGLAS V SCHROEDER DENNIS M & JOAN E CLARK CHARLES R & KATHLEEN J MOWREY PO BOX 625 6651 HAZELTINE BLVD 6610 BRENDEN CT CHANHASSEN , MN 55317 -0625 EXCELSIOR, MN 55331 -8039 CHANHASSEN , MN 55317 -7560 JOHN A & DEBORAH S MASCHOFF MARK CONRAD GREGERSON DAVID L & HOLLY J JESSEN 6613 BRENDEN CT 6633 BRENDEN CT 6618 BRENDEN CT CHANHASSEN , MN 55317 -7560 CHANHASSEN , MN 55317 -7560 CHANHASSEN , MN 55317 -7560 PAUL J & KRISTI L BORCHERT WILLIAM 0 & KRISTEN K FLANAGAN MICHAEL L & AMY C DEGENEFFE 6636 BRENDEN CT 6653 BRENDEN CT 6654 BRENDEN CT CHANHASSEN , MN 55317 -7560 CHANHASSEN , MN 55317 -7560 CHANHASSEN , MN 55317 -7560 DAN V & CYNTHIA M SEEMANJOSEPH R COOK & THOMAS &MARY KUHN 6673 BRENDEN CIR 6693 BRENDEN CT KATHLEEN L TINGTON CHANHASSEN , MN 55317 -7560 CHANHASSEN , MN 55317 -7560 6672 BRENDENN CCT CHANHASSEN . MN 55317 -7560 0 • DOUGLAS E & MARY K JOHNSON CHARLES R & BEVERLY J JACKSON 6474 MURRAY HILL RD 2110 CRESTVIEW DR EXCELSIOR, MN 55331 -6994 EXCELSIOR, MN 55331 -6009 STEVEN S & LORI A ABBLETT PLOWSHARES DEVELOPMENT LLC 2081 CRESTVIEW DR 1851 WESTLAKE DR EXCELSIOR, MN 55331 -8008 SUITE 550 CHANHASSEN . MN 55317 -8567 TIMOTHY P & HEIDI S LARKIN & U S HOME CORP LECY BROS CONSTRUCTION 935 EAST WAYZATA BLVD 2150 CRESTVIEW DR EXCELSIOR . MN 55331 -8009 WAYZATA, MN 55391 -1849 IND SCHOOL DIST 276 261 SCHOOL AVE EXCELSIOR, MN 55331 -1987 LECY BROTHERS CONSTRUCTION INC 15012 HWY 7 HOPKINS , MN 55345 -3634 0 ' Public Hearing Notification Area (500 feet) Minnetonka Middle School West Interim Use Permit Planning Case No. 06-03 6421 Hazeltine Boulevard City of Chanhassen P� State Hwy 7 OmNb Y O� lane P a� G� ep � MMwt/ W N� u SUBJECT PROPERTY � c w % a S Lake Minnewashla MnrenaNN Rep'wal VnM Q� l TnP / 1 Larson Engineering of Minnesota 3524 Labors Road White Bear Lake, MN 55110.5100 651.481.9120 Fax: 651.481.9201 w Jarsonengrmm March 16, 2006 Mr. Robert Generous, AICP City of Chanhassen 7700 Market Blvd. P.O. Box 147 Chanhassen, MN 55317 9':rrl71"rD MAR 1 7 2.006 01TY OF a-MANHASSEN RE: Interim Use Permit — Minnetonka Middle School West, Planning Case #06-03 Dear Mr. Generous: This letter is in response to a letter addressed to Mike Condon with Minnetonka Public Schools and dated February 27, 2006. Below are comments to conditions subject to the approval of Chanhassen City Council Interim Use Permit #06-03. The letter dated February 27, 2006 is attached. 1. The applicant will provide the City with a cash escrow or letter of credit in the amount of $5,600.00 to guarantee erosion control measures and site restoration and compliance with the interim use permit. 2. According to our calculations the existing 24 -inch culvert within the private drive will receive a runoff rate of 4.13 cubic feet per second from the Minnetonka Middle School West site for a 100 -year storm event after construction of the infiltration basin event while currently the culvert receives 16.8 cubic feet per second from the same site during the same storm. Currently the maximum discharge without considering head pressure from the 24" CMP @ 4.1% slope is 24.9 cubic feet per second. The Mirmetonka Middle School West is currently using 67.4% of the maximum capacity of the culvert, while with the construction of the infiltration basin that usage drops to 16.6% of the maximum capacity. The 24" culvert should be sufficient with the construction of the infiltration basin. 3. The proposed haul route for all construction equipment will be through the school property and out of the existing entrance to the property. 4. When a contract has been awarded the successful bidder will be notified of the separate grading permit required for the placement of fill to another site in Chanhassen. 5. The following notes have been added to Sheet CI of the Construction Documents. 1. Fill coming from and/or going to another site in Chanhassen, a separate grading permit will be required for the other property. 2. All disturbed areas as a result of construction are required to be reseeded and mulched within two weeks of site grading. EAQWI Pro,eGs -Zxo ?AnnetonMa Public SchcolsNinnetonm West Mddle Sct oenReeponee to Gty 308-06 doc 3. An erosion control blanket must be installed on all sides around the infiltration basin. 4. The applicant shall construct and maintain a rock construction access to the site. Access to the site shall be restricted to this point only. 5. Contractor shall obtain a plumbing permit prior to installing the storm sewer piping. 6. Erosion control blanket/turf reinforcement mat (MnDOT Category 5) shall be used for restoration of the exposed slope from the emergency overflow to the ditch along Highway 41 within 7 days of final grade. Erosion control shall be installed on any exposed soils south of the private drive within 24 hours of final grade. 7. Erosion control blanket category 2 or 3 shall be installed within the filtration area within 24 hours of connecting the 18 -inch PVC to the basin. The blanket shall be applied following a seeding. Remaining exposed soils on the site shall be mulched and seeded or sodded within 14 days of final grade. 8. The silt fence used shall be a City of Chanhassen type 1 silt fence; monofilament silt fence with metal T -posts, 6 foot maximum spacing and 3 plastic zip ties in the top 8 inches of the fabric. 9. Street sweeping shall be completed within 24 hours should soil be tracked upon paved surfaces. 10. Catch basin inlet control shall be provided for the catch basins adjacent to the school building if tracking soil becomes a problem on the paved surfaces. 11. Seed mixture 5B shall be used in the shaded and wooded areas. The seed mix or species to be furnished and used shall be a uniform blend as stated in MnDOT Section 3876. Seed mixture 310 should be used in the lower portion of the interior of the infiltration basin between the normal water elevation and the high water elevation. Seed mixture 328 can be used in the infiltration basin from the high water level elevation to the crest. Seed mixtures 260 or 270 can be used in the lawn areas. Seed mixture 150 can be used for temporary stabilization of the slopes and grading areas during construction. 12. The seed mixture shall be applied with a seed drill that will accurately meter the types of seed to be planted and keep all seeds uniformly mixed during drilling. The mix application rate for seed mixes 5B, 260, and 270 shall be 120 lbs/acre and for seed mix 310 and 325 the rate shall be 82 lbs/acre. The application rate for seed mix 150 shall be 50 lbs/acre. 6. A full size drainage area map for the subwatershed is attached as Sheet C4. 7. City Detail Plates Nos. 3101, 3102, 3103, 5300, 5301 and 5302 have been added to Sheet C3 of the Construction Documents. 8. A rock construction entrance Detail Plate No. 5301 has been added to Sheet C3. 9. The Minnetonka Middle School West will obtain and comply with all permit requirements of the Watershed District and MnDOT. The existing storm sewer flow direction has been revised in all plans to match. 10. The Minnetonka Middle School West will supply the City with a mylar as -built survey prepared by a licensed surveyor upon completion of filling and/or excavation to verify the grading plan has been performed in compliance with the proposed plan. 11. A cross-section for the infiltration area has been added to Sheet Cl. 12. Riprap has been added to the flared -end section at the south end of the 24 -inch pipe south of the private drive. Shown on Sheet C 1. EAOYNkojecls-2005UfnnetmM Pudic S&4aswinnetonm West Middle Sch dlRespwn to City M-0 .dM 13. The existing 18" PVC pipe to be removed will be capped so all runoff from the Minnetonka Middle School West will be routed through the existing 12" pipe and daylight in the Highway 41 ditch during construction of the infiltration basin. Note added to sheet Cl. 14. The silt fence specified for the filtration area has been labeled as "Installed after drain tile installation." See Sheet C 1 for note. 15. A rock construction exit pad has been added to Sheet C 1. If you have any questions or need additional information, please contact me at (651) 481-9120. Sincerely, Larson Engineering, Inc. Michael A. Murphy,�P E. / Project Manager cc: Mike Condon, Minnetonka Public Schools Alyson Fauske, Assistant City Engineer Lori Haak, Water Resources Coordinator Steve Torell, Building Official E1CmriPrc ec-2005U9nnetmiu, Pudic SchcobiNuinetonMe West t.SEEIe SModVtesPonse b City 3d8-06.dw 7700 Market Boulevard PO Box 147 Chanhassen, MN 55317 Administration Phone: 952.227.1100 Fax: 952.227.1110 Building Inspections Phone: 952.227.1180 Fax: 952 227.1190 Engineering Phone: 952.227.1180 Fax: 952.227.1170 Finance Phone: 952.227.1140 Fax: 952.227.1110 Park & Recreation Phone: 952127.1120 Fax: 952.227.1110 Recreation Center 2310 Coulter Boulevard Phone: 952.227.1400 Fax: 952.227.1404 Planning d Natural Resources Phone: 952.227.1130 Fax: 952.227.1110 Public Works 1591 Park Road Phone: 952.227.13W Fax: 952.227.1310 Senior Center Phone: 952227.1125 Fax: 952.227.1110 Web She wxw.ci.chanhassen.nnoxs 0 February 28, 2006 Mr. Mike Condon Minnetonka Public Schools 5621 County Road 101 Minnetonka, MN 55345 Re: Interim Use Permit — Minnetonka Middle School West Planning Case #06-03 Dear Mr. Condon: 06-01 This letter is to confirm that on February 27, 2006, the Chanhassen City Council approved Interim Use Permit #06-03 to permit the grading of approximately 3,400 cubic yards for an infiltration basin and drainage swales, plans prepared by Larson Engineering of Minnesota, dated December 19, 2005 subject to the following conditions: The applicant shall provide the City with a cash escrow or letter of credit in the amount of $5,600.00 to guarantee erosion control measures and site restoration and compliance with the interim use permit. 2. Verify the existing 24 -inch culvert has sufficient capacity before replacing the private drive entrance. 3. The applicant must provide a proposed haul route for review and approval. 4. If fill is coming from and/or going to another site in Chanhassen, a separate grading permit will be required for the other property. All disturbed areas as a result of construction are required to be reseeded and mulched within two weeks of site grading. 6. An erosion control blanket must be installed on all sides around the infiltration basin. All disturbed areas as a result of construction are required to be sodded or reseeded and mulched within two weeks of site grading. 7. Submit a full size drainage area map. 8. Add City Detail Plates Nos. 3101, 3102, 3103, 5300, 5301 and 5302. 9. Show rock construction entrance per Detail Plate No. 5301. The applicant shall construct and maintain a rock construction access to the site. Access to the site shall be restricted to this access point only. $CANNED The City of Chanhassen • A growing community with clean lakes, quality schools, a charming downtown, thriving businesses, winding trails, and beautiful parks. A gieat place to live, work, and play. 0 0 Minnetonka Public Schools February 28, 2006 Page 2 of 3 10. The applicant shall obtain and comply with all permit requirements of the Watershed District and MnDOT.Revise the existing storm sewer flow direction in all plans to match. 11. The applicant shall supply the City with a mylar as -built survey prepared by a professional engineer upon completion of filling and/or excavation to verify the grading plan has been performed in compliance with the proposed plan. 12. A plumbing permit must be obtained before installing the storm sewer piping. 13. The applicant shall provide a cross section for the filtration area showing the elevation of the draintile and the trenches, as well as a cross section of the trench and details of the material used. The draintile trenches shall be lined with drainage fabric (4% to 6% open space) and filled with pea rock at a depth of at least 18 inches and 3 feet wide. The bottom of the entire filtration basin shall be backfilled with a mixture of 50% coarse clean sand, 25% compost, 25% loamy topsoil for a minimum depth of 6 inches (from approximately 1034.5 to 1035.0). The rest of the area shall be top -dressed with native topsoil. CB -1 shall be revised to be an open beehive inlet at an approximate elevation of 1037 for handling large storm event runoff if the calculations for rate control work out to avoid overwhelming the filtration area and having long periods (greater than 72 hours) of ponding. 14. Erosion control blanket/turf reinforcement mat (MnDOT Category 5) shall be used for restoration of the exposed slope from the emergency overflow to the ditch along Highway 41 within 7 days of final grade. The blanket shall be specified and a detail provided. Erosion control blanket shall be installed on any exposed soils south of the private drive within 24 hours of final grade. 15. A seed mix for shaded, wooded areas shall be specified in the plan, along with the proposed rate of application. A seed mix for the filtration area and slopes shall also be specified. 16. The rip rap at the flared -end section at the south end of the 24 -inch pipe south of the private drive shall be replaced. 17. Runoff from the storm sewer system from the school shall be controlled during construction. The water shall be conveyed through a non-erosive means to the Highway 41 ditch through the job site. 18. Erosion control blanket category 2 or 3 shall be installed within the filtration area within 24 hours of connecting the 18 -inch PVC to the basin. The blanket shall be applied following a seeding. Remaining exposed soils on site shall be mulched and seeded or sodded within 14 days of final grade. 19. The silt fence used shall be a City of Chanhassen type 1 silt fence; monofilament silt fence with metal T -posts, 6 foot maximum spacing and 3 plastic zip ties in the top 8 inches of the fabric. The silt fence specified for the filtration area shall be labeled as "Installed after drain tile installation." O. A rock construction exit pad shall be installed from the bituminous edge 40 to 50 feet long into the job site. f M Minnetonka Public Schools February 28, 2006 Page 3 of 3 21. Street sweeping shall be completed within 24 hours should soil be tracked upon paved surfaces. 22. Catch basin inlet control shall be provided for the catch basins adjacent to the school building if tracking of soil becomes a problem on the paved surfaces. Please submit a cash escrow or letter of credit in the amount of $5,600.00 as security for compliance with the permit. If you have any questions or need additional information, please contact me at (952) 227-1131 or Alyson Fauske, Assistant City Engineer, at (952) 227-1164. Robert Generous, A1CP Senior Planner c: Mike Murphy, Larson Engineering ec: Alyson Fauske, Assistant City Engineer Lori Haak, Water Resources Coordinator Steve Torell, Building Official 9:\plan\2006 planning cases\06-03 minnetonka middle school west iup\approval letter.doc It . • I- 040 -03 CITY OF CHANHASSEN CARVER AND HENNEPIN COUNTIES, MINNESOTA FINDINGS OF FACT AND RECOMMENDATION fIMIM Application of Minnetonka School District for an Interim Use Permit to permit the grading of approximately 3,400 cubic yards for the creation of a storm water retention pond — Planning Case No. 06-03. On February 7, 2006, the Chanhassen Planning Commission met at its regularly scheduled meeting to consider the application of Minnetonka School District for an interim use permit for the property located at 6421 Hazeltine Boulevard (Highway 41). The Planning Commission conducted a public hearing on the proposed interim use which was preceded by published and mailed notice. The Planning Commission heard testimony from all interested persons wishing to speak and now makes the following: FINDINGS OF FACT The property is currently zoned Office & Institutional District, OI. 2. The property is guided by the Land Use Plan for Public/Semi-Public use. The legal description of the property is: Part of the SW 1/4 of the NW 1/a of Section 3, Township 116, Range 23, Carver County, Minnesota. 4. When approving an interim use permit the City follows the standards for conditional use permits. The City must determine the capability of a proposed development with existing and proposed uses. The city makes the following findings: a. The proposed use will not be detrimental to the public health, safety, comfort, convenience or general welfare of the neighborhood or the city, but will enhance drainage and erosion issues in the area. b. The proposed use will be consistent with the objectives of the city's comprehensive plan and the Chanhassen City Code. • c. The proposed use will be designed, constructed, operated and maintained so to be compatible in appearance with the existing or intended character of the general vicinity and will not change the essential character of that area. d. The proposed use will not be hazardous or disturbing to existing or planned neighboring uses. e. The proposed use will be served adequately by essential public facilities and services, including streets, police and fire protection, drainage structures, refuse disposal, water and sewer systems and schools; or will be served adequately by such facilities and services provided by the persons or agencies responsible for the establishment of the proposed use. f. The proposed use will not create excessive requirements for public facilities and services and will not be detrimental to the economic welfare of the community. g. The proposed use will not involve uses, activities, processes, materials, equipment and conditions of operation that will be detrimental to any persons, property or the general welfare because of excessive production of traffic, noise, smoke, fumes, glare, odors, rodents, or trash. h. The proposed use will have vehicular approaches to the property which do not create traffic congestion or interfere with traffic or surrounding public thoroughfares. i. The proposed use will not result in the destruction, loss or damage of solar access, natural, scenic or historic features of major significance. j. The proposed use will be aesthetically compatible with the area. k. The proposed use will not depreciate surrounding property values. 1. The proposed use will meet standards prescribed for certain uses as provided in the City Code. 5. The planning report #06-03 dated February 7, 2006, prepared by Robert Generous, et al, is incorporated herein. 2 0 RECOMMENDATION The Planning Commission recommends that the City Council approve the interim use permit. ADOPTED by the Chanhassen Planning Commission this 7h day of February, 2006. CHANHASSEN PLANNING COMMISSION ?VTI I" February 28, 2006 CITY OF CIIANIIASSEN Mr' Mtke Condon Minnetonka Public Schools 7700 Market Boulevard 5621 County Road 101 PBoz 141 Chanhass sen, MN 55311 Minnetonka, MN 55345 Administration Re: Interim Use Permit — Minnetonka Middle School West Phone: 952.227.1100 Fax: 952.227 1110 Planning Case #06-03 g Building Inspections Dear Mr. Condon: Phone: 952.227.1180 Fax: 952.227.1190 This letter is to confirm that on February 27, 2006, the Chanhassen City Council Engineering approved Interim Use Permit #06-03 to permit the grading of approximately 3AW Phone: 952.221.10 cubic yards for an infiltration basin and drainage swales, plans prepared by Larson Fax: 952.227.17770 Engineering of Minnesota, dated December 19, 2005 subject to the following Finance conditions: Phone: 952.227.1140 Fax: 952.711.1110 1. The applicant shall provide the City with a cash escrow or letter of credit in the Park a Recreation amount of $5,600.00 to guarantee erosion control measures and site restoration Phone. 952.2271120 and compliance with the interim use permit. Fax: 952.227 1110 RecreationCoulter center 2310 Coulter Boulevard 2, Verify culvert has sufficient i capacity the �' the existing 24 hl ent ca act before replacing Phone 952.227.1400 private drive entrance. Fax: 957227.1404 3. The applicant must provide a proposed haul route for review and approval. Planning a Natural Resources Phone: 952.2271130 4. If fill is coming from and/or going to another site in Chanhassen, a separate Fax: 952.227.1110 grading permit will be required for the other property. Public Works 1591 Park Road 5. All disturbed areas as a result of construction are required to be reseeded and Phone: 952.2171300 mulched within two weeks of site grading. Fax: 952.227.1310 Senior Center 6. An erosion control blanket must be installed on all sides around the infiltration Phone: 952.227 1125 basin. All disturbed areas as a result of construction are required to be sodded Fax: 952.227.1110 or reseeded and mulched within two weeks of site grading. Web She wwwci.chanhassen.mn.us 7. Submit a full size drainage area map. 8. Add City Detail Plates Nos. 3101, 3102, 3103, 5300, 5301 and 5302. 9. Show rock construction entrance per Detail Plate No. 5301. The applicant shall construct and maintain a rock construction access to the site. Access to the site shall be restricted to this access point only. The City of Chanhassen • A growing community with clean lakes, quality schools, a charming downtown, thriving businesses, winding trails, and beautiful parks. A great place to live, work, and play. Minnetonka Public Schools February 28, 2006 Page 2 of 3 10. The applicant shall obtain and comply with all permit requirements of the Watershed District and MnDOT.Revise the existing storm sewer flow direction in all plans to match. 11. The applicant shall supply the City with a mylar as -built survey prepared by a professional engineer upon completion of filling and/or excavation to verify the grading plan has been performed in compliance with the proposed plan. 12. A plumbing permit must be obtained before installing the storm sewer piping. 13. The applicant shall provide a cross section for the filtration area showing the elevation of the draintile and the trenches, as well as a cross section of the trench and details of the material used. The draintile trenches shall be lined with drainage fabric (4% to 6% open space) and filled with pea rock at a depth of at least 18 inches and 3 feet wide. The bottom of the entire filtration basin shall be backfilled with a mixture of 50% coarse clean sand, 25% compost, 25% loamy topsoil for a minimum depth of 6 inches (from approximately 1034.5 to 1035.0). The rest of the area shall be top -dressed with native topsoil. CB -1 shall be revised to be an open beehive inlet at an approximate elevation of 1037 for handling large storm event runoff if the calculations for rate control work out to avoid overwhelming the filtration area and having long periods (greater than 72 hours) of ponding. 14. Erosion control blanket/turf reinforcement mat (MnDOT Category 5) shall be used for restoration of the exposed slope from the emergency overflow to the ditch along Highway 41 within 7 days of final grade. The blanket shall be specified and a detail provided. Erosion control blanket shall be installed on any exposed soils south of the private drive within 24 hours of final grade. 15. A seed mix for shaded, wooded areas shall be specified in the plan, along with the proposed rate of application. A seed mix for the filtration area and slopes shall also be specified. 16. The rip rap at the flared -end section at the south end of the 24 -inch pipe south of the private drive shall be replaced 17. Runoff from the storm sewer system from the school shall be controlled during construction. The water shall be conveyed through a non-erosive means to the Highway 41 ditch through the job site. 18. Erosion control blanket category 2 or 3 shall be installed within the filtration area within 24 hours of connecting the 18 -inch PVC to the basin. The blanket shall be applied following a seeding. Remaining exposed soils on site shall be mulched and seeded or sodded within 14 days of final grade. 19. The silt fence used shall be a City of Chanhassen type 1 silt fence; monofilament silt fence with metal T -posts, 6 foot maximum spacing and 3 plastic zip ties in the top 8 inches of the fabric. The silt fence specified for the filtration area shall be labeled as "Installed after drain tile installation." 20. A rock construction exit pad shall be installed from the bituminous edge 40 to 50 feet long into the job site. Minnetonka Public Schools February 28, 2006 Page 3 of 3 21. Street sweeping shall be completed within 24 hours should soil be tracked upon paved surfaces. 22. Catch basin inlet control shall be provided for the catch basins adjacent to the school building if tracking of soil becomes a problem on the paved surfaces. Please submit a cash escrow or letter of credit in the amount of $5,600.00 as security for compliance with the permit. If you have any questions or need additional information, please contact me at (952) 227-1131 or Alyson Fauske, Assistant City Engineer, at (952) 227-1164. Since Robert Generous, AICP Senior Planner c: Mike Murphy, Larson Engineering ec: Alyson Fauske, Assistant City Engineer Lori Haak, Water Resources Coordinator Steve Torell, Building Official g:\plan\2006 planning cases\06-03 minnetonka middle school west iup\approval letter.doc Administration January 4, 2006 CITY OF Mr. M'chael Condon Independent School District 276 Fax:952.227.1110 261 School Avenue WNSEN Excelsior, MN 55331 7700 Market Boulevard PO Bax 147 Re: Minnetonka Middle School West Interim Use Permit (IUP) Application Chanhassen, MN 55317 1. A check for $675 ($425 IUP permit application fee; $200 development review sign; $50 recording Fax: 952.227.1190 Dear Mr. Condon: Administration Phone: 952.227.1100 Staff has reviewed the documents which were submitted for the above -referenced project Based on Fax:952.227.1110 this review, the submittal is incomplete and cannot be scheduled for public review. The following information needs to be submitted before we can initiate the City review process: Building inspections Phone: 952.227.1180 1. A check for $675 ($425 IUP permit application fee; $200 development review sign; $50 recording Fax: 952.227.1190 fee. You will be invoiced for the public hearing notice at a later date.); Engineering Phone: 952.717.1160 2. An original signed development review application (form available online at Fax: 952.227.1170 www.ci.chanhassen.mn.us); Finance 3. 16 full-size copies of the plan set; Phone: 952.227.1140 fax: 952.227.1110 4. A 8 '/s x 11" reduction of each sheet in the plan set; and Park A Recreation 5. An electronic set of plans in TIFF format. Phone: 952.227.1120 Fax 952.227.1110 I am returning the Application for Earthwork Permit and check to you with this letter. Once you have Recreation Center submitted the required information, we will schedule this item for Planning Commission and City 2310 Coulter Boulevard Council review. If the above materials are submitted by Friday, January 6 at 4:30 p.m., the IUP will be Phone: 952.227.1400 scheduled to appear on the February 7 Planning Commission meeting agenda and the February 27 City Fax: 952.227.1404 Council meeting agenda. Planning & Natural ResourcesThe complete application may be submitted to Bob Generous, Senior Planner, at the address to the left. Phone: 952.227.1130 Bob will ensure your application is complete and will be your primary contact as you take your Fax:952.227.1110 application through the process. Public Works If you have any questions or need additional information, please contact me at 952.227.1135 or Bob 1591 Park Road Generous at 952.227.1131. Phone: 952.227.1300 Fac: 952.227.1310 Sincerely, Senior Center CITY OF CHANHAS EN Phone: 952.227.1125 Fax: 952.227.1110 Web Site wwx.d.dianhassen.mn.us ri Haak ater our Coordinator cc: Michael Murphy, Larson Engineering Enclosures sca!1w=_D The City of Chanhassen • A growing community with clean lakes, quality schools, a charming downtown, thriving businesses, winding trails, and beaulilul parks. A gieal place to live, work, and play CITY OF CHMMSSEN 7700 Market Boulevard PO Boz 147 Chanhassen,. MN 55317 Administration Phone: 952.227d! 100 Fax: 952.227.1110 Building Inspections Phone: 952.227.1180 Fax: 952.227.1190 Engineering Phone: 952227.1180 Fax: 952.227.1170 Finance Phone: 952.227.1140 Fax: 952.227.1110 Park & Recreation Phone: 952.227.1120 Fax: 952.227.1110 Recreation Center 2310 Coulter Boulevard Phone: 952.227.1400 Fax 952 227,1404 Planning & Natural Resources Phone: 952.221.1130 Fax: 952.227.1110 Public Works 1591 Park Road Phone: 952.227.1300 Fax: 952.227.1310 Senior Center Phone: 952.227.1125 Fax: 952.227.1110 Web Site www.ci.chanhassen.mnos January 9, 2006 Mr. Michael Condon Independent School District 276 5621 Co. Rd. 101 Minnetonka, MN 55345 Re: Minnetonka Middle School West Interim Use Permit (IUP) Application Dear Mr. Condon: Staff has received the additional information for the above IUP application submitted on Friday, January 6. One item is still outstanding. Please submit an original signed development review application (form available online at www.ci.chanhassen.mn.us) to Bob Generous, Senior Planner, at the address to the left. Bob will ensure that the application is complete and will be your primary contact as you take your application through the process. If you have any questions or need additional information, please contact me at 952.227.1135 or Bob Generous at 952.227.1131. Sincerely, CITY OF CHANHAS EN Lori Hoak Water Resources Coordinator cc: Michael Murphy, Larson Engineering SCANNED The City of Chanhassen • A growing community with clean lakes, quality schools, a charming downtown, thriving businesses, winding trails, and beautiful parks. A gieat place to live, work, and play. 0 0 O (�- O� CHANHASSEN PLANNING COMMISSION REGULAR MEETING FEBRUARY 7, 2006 Acting Chair McDonald called the meeting to order at 7:00 p.m. MEMBERS PRESENT: Jerry McDonald, Kurt Papke, Deborah Zorn, Dan Keefe, Debbie Larson and Mark Undestad MEMBERS ABSENT: Uli Sacchet STAFF PRESENT: Bob Generous, Senior Planner; Sharmeen Al-Jaff, Senior Planner; and Alyson Fauske, Assistant City Engineer PUBLIC PRESENT FOR ALL ITEMS: Janet & Jerry Paulsen 7305 Laredo Drive PUBLIC HEARING: MINNETONKA MIDDLE SCHOOL WEST: REOUEST FOR AN INTERIM USE PERMIT TO PERMIT OVER 1,000 CUBIC YARDS OF GRADING ON PROPERTY ZONED OFFICE & INSTITUTIONAL DISTRICT LOCATED AT 6421 HAZELTINE BOULEVARD (HIGHWAY 41), PLANNING CASE NO. 06-03. Public Present: Name Address Dennis Clark 6651 Hazeltine Blvd. Bob Generous presented the staff report on this item. McDonald: Kurt, you want to go first? Papke: Are there going to be any issues, I mean kids, water, playing in the water? Any fencing? Any barrier? Any concerns? What's the plan there? Generous: There's nothing proposed as part of this development. Fencing generally we don't put around storm water ponds. There's over 3,000 in the community. We need to start setting that precedent to go on. This is on the back side of the school. It's not a heavy use area for the school district. So and again this is intended to be a dry pond so there will only be water in storm events. Papke: In a storm event, how deep does it get? !CANNED 0 0 Planning Commission Meeting — February 7, 2006 Fauske: The plans indicate for a 100 year event 4.4 feet. Which is quite typically in your typical design for a pond in a development you will typically have between 3 and 10 feet all the time with another 3 feet of bounce on top of that. Zom: Bob, is there any type of recommendation for timing of construction? Perhaps at the end of the school year that we can recommend to help alleviate children being near this area. Generous: That didn't come up as part of our discussion. I wonder if the applicant might be able to answer that. Zorn: Okay. Mike Murphy: I'm Mike Murphy, Larson Engineering. I prepared the plans and I'm representing the applicant tonight since he's on vacation. It's scheduled for June 15th when school's out through August 15th. The construction on this project. Zom: Thank you. Mike Murphy: Anything else? McDonald: No? The only question I have for staff is that you had placed in the report about there may be the need to take some of this fill and put it someplace else within the city of Chanhassen and you were unaware of what those plans were. Has that been resolved? Generous: No, and as part of any grading permit they would, if they're going to export it to the location in the community, they need to notify us and we have to verify they have a grading permit for that site. If they're taking it out of the city, then they just have to notify us as to the haul routes. McDonald: Okay, but at this point they have not made you aware of what their plans are? Generous: No, I'm not sure. They could know that details. McDonald: Okay. Then in that case we'll ask the applicant to come forward and present their case. Mike Murphy: Well Bob mentioned, described it very well. Basically we're adding a 3,400 cubic yard infiltration basin at the request basically of the Department of Transportation and the DNR. They're requiring a maximum of 5 to 6 cubic feet per second runoff. We've met that requirement. It's currently under review from the Department of Transportation. There's a permit application for right-of-way from MnDot and also a drainage permit that they're reviewing currently and the DNR has provided the school with a cease and desist order to remove the erosion across Dennis Clark's driveway and that will be done in May. Before May 30th. McDonald: Any questions for the applicant? `a Planning Commission Meeting — February7, 2006 • Keefe: I've got a quick question. In terms of the fill requirements, are you anticipating that you'll be removing a lot and then back filling or how does, what is the process for this particular site? Mike Murphy: Well it's entirely, almost entirely removal. It's currently I believe 600 to 700 cubic yards on site from a previous project is how it was brought in, fill in. Which was a road is calculated at 600 and 700 cubic yards. Last year before we knew of this issue with MnDot so now it's, they're removing yet another 3,400 cubic yards to come up with this plan. Keefe: Okay. McDonald: Thank you very much. At this time I'll open the meeting to the public. Anyone wishes to make comment, please come forward. State your name and address and we will hear your comments. Dennis Clark: I'm Dennis Clark and my property is south of, south of the, it sits on the bottom of the hill. It's about 7 acres so the wash, the 600 or 700 yards that has washed that's gone now into the pond has kind of been an issue so they're, everyone's doing their best to clean that up. It's a pretty big canyon actually of what is washed. 700 yards of dirt would probably be as big a hole as this room and there's also been some fairly mature trees that have come down in this. I would say maybe 8 that are 100 foot trees. Pretty big in diameter. They're talking about reforesting that. I haven't really seen the, any particular plan on that or what they're trying to do. I'm sure they're going to try to, or we'd like to see something replace. You're not going to be able to put back 100 foot trees so I do got some concern on that. The amount of water that comes down in the spring, and where this started was from the reconstruction up on the top of the school when they re -graded and blacktopped all of that and there was some question then from the folks south where's all this water going to go? We pretty reassured them that this was under control. I don't understand what 5 to 6 cubic feet of water a second are, but this stuff is a river that's coming off and the holding pond on the top, I don't quite get it. It's, you know I mean I'm sure the engineers have studied the water but I don't know if they know how much water, what created this canyon now or what the existing shore was for years that was fined so there must have been enough, being able to be dispersed but then when they added all that blacktop on the top, that water I think surprised everybody, and this has really been going on for 2 years. And finally the trees started falling down and that's when the alert was. So 3 questions are, even the trick of getting this stuff out of the pond is going to take more equipment and there's a lot of mature trees all over this property that I'm thinking they're going to get affected so I'm kind of concerned because that's my berm to the highway, to the school. The frontage. I've got a pretty long driveway. 100 yards there probably. So I sit, and I don't know, can we put the map up on how big that piece of property is. It's kind of hidden so nobody knows, it was the only one on that pond. It's been there 20 years. Okay so this, there's actually two sections. That little sliver right up here is where the erosion is and that's the forestation that's taken out. It actually goes in and has a slot there but I'm just trying to make sure that it's on record that we're looking for some serious reforestation there. And I don't know how they used to do the equivalent to that when they're, I know when they're cutting trees down it's so many inches bigger. You know if you take, there's probably some formula there. If you take a 24 inch tree • Planning Commission Meeting — February 7, 2006 you get 24, you know you might end up with 2 more trees or bigger pine trees. I believe there's some formula there. I would like to see that applied in this case. And maybe that's in the plan. I didn't look at the plan. I've been out of town and. And then it's the part that's going also down to the pond so there's the hill where the big canyon is where the trees are coming down, the power company's probably got a little concern in there too because their big power poles, they're now within 10 feet would you say. Have you been up there? 10 feet of the hole. That will shut down the whole west metro so I think they want to get on this thing. If those things, you know that's that big power trunk k line that goes through there. But that doesn't show up on the map. So urgency, you've got spring water coming. I don't know if there's any contingencies. I think the original dirt was just even, we thought we'd probably patch it up and maybe we just had a sewer that was plugged but, so it's back to these how big is this sewer. My concern is, I don't understand the 4 foot water holding pond. When this water comes, it's a river folks. It's not just a trickle so I don't know how big that thing is. If it's a swimming pool? Two swimming pools? It doesn't mean anything to me. I just question that and how fast. If you have two rain storms in a row or 3 in a row, this thing's coming over and now when it comes over and breaks that dike, now you've got this whole western, or the whole southern slope which, this whole property line right here, that's all hill. They don't show the contours. See it back up here. That's all, the school sits, I don't know what the height of that hill is. 100 feet higher. So DNR got involved and they wanted this water to go north. What ever happened to that, I mean they wanted to divert this water north and everything naturally. That pond is a runoff holding pond and then that goes under the road, over to Minnewashta and my first discussion was why don't we shoot it right under the road now into Minnewashta Park because that's all swamp down there on the other side. And the other thing I'd like in consideration here, one more note and then I'm done, is Carver Park is going to start a project on the other side of the road and I think they're going to make an egress into the park there for a dog park, and I don't know what happened to that plan, if that's going down, but this whole driveway area that's going to have what, bulldozers or going down into this thing and pulling the silt out. You ain't going to do it with shovels. They made a beach. 700 yards of dirt like this just went down onto that sand and it's made a beach and you know I don't know if there's going to be more construction going on there but that whole spot out on the highway there is probably going to be coned up and you know I don't know if there's projects, you know just don't know if they're going to make that wider. Put a new culvert in. I don't know the engineering part of this thing that's coming down. That's all a wash now. Everything's, it's even taken out my driveway underneath. So the school has come back in and has re -packed underneath my driveway to hold some of that dirt, and that will be gone in the spring. So there's, you know just trying to say it's, I don't know what the dates are but spring is coming and water's going to be flowing there pretty soon and it's going to be another 500 cubic yards of dirt down in that pond. McDonald: Okay. Thank you very much. Does anyone else wish to come forward and make comment? Seeing no one else coming forward, I now close the public meeting and I bring it back up to the commissioners for discussion and review. Keefe: Yeah, I just have a question. Maybe, can you speak at all to any of you speak to the adjacent properties in terms of the water flow that the gentleman was speaking about. I mean h it, is the water really flowing? Is this going to slow down the water that goes onto that adjacent property or what can you tell us? 4 0 • Planning Commission Meeting — February 7, 2006 Fauske: I can speak in generalities on the storm sewer pipe design shows that it will discharge into that basin and the intent of the basin is to slow the water down. Provide it an area where it can pond and then slowly outflow through the outlet pipe. They do have some drain tile showing at the bottom of the pond which will go into the pipe just to slowly bleed that water down the slope, so to decrease the discharge rate. I don't have the pre and post conditions to be able to speak to how much they are reducing that. I think that's something their engineer might be able to answer, but that's the intent of the system is just to slow that water down and then pipe it down. I believe they have it piped it all the way down the slope there which we were glad to minimize the amount of water going down that slope because they'll have to actually eliminate the water going down the slope for a 100 year event. Keefe: How about in terms of reforestation on the adjacent properties? Is that contemplated as a part of this project? Generous: There's nothing shown in this plans. I wonder if the applicant may have more information on that. I know that's a separate DNR thing. Mike Murphy: We met with the Carver County Soil and Water Conservation District to help to deal with the wetland restoration. They have told us, me personally that we could remove small trees. That that erosion would be replaced or it could be removed with a, like a mini -excavator and a skid loader and trucks. We work within the right-of-way. MnDot right-of-way so we're working with them right now to find out what their requirements are for traffic control, you know what times of day, if it has to be at night or what not. As far as the I guess canyon in this, as we're calling it today, we're not planning to add any trees in there. Again a majority of it's within MnDot right-of-way. It's kind of their call. They've seen it. They've seen it for over a month now. We're waiting, anxiously awaiting comments from them. If that's part of their plan, we'll definitely put that stuff in. I guess I'd like to comment also on the discharge rate. We are at, we currently have an 8 inch, or 18 inch PVC pipe leading into this area currently. It drains directly over about 3:1 slope. Very steep slope causing the erosion. We're going to replace that with this infiltration basin and an 8 inch outlet. That's all there is to this pond. The high water level, the difference between the high water level and emergency overflow for the pond would be over a foot. So in a 100 year storm it should never overflow. You mentioned back to back storm events. This isn't designed for back to back 100 year storms. It needs infiltration time. Keefe: Just sound, as the Planning Commission, I mean is it typical that when we look at restoration of adjacent properties? Kurt you brought it in. I'm trying to. McDonald: I guess the thing I would have for staff is, what's our input? If this is on MnDot right-of-way and it's probably more their call than anything but what input do we have into that as far as getting it put back to the way it was? Generous: As he said, it will never be put back the way it is because of the age of the trees. We can make recommendations to MnDot however it is their jurisdiction and they can say they don't want them in their right-of-way or they do. 0 0 Planning Commission Meeting — February 7, 2006 Papke: Just one other point you know from a Planning Commission perspective, the only thing we're looking at tonight is the pond. Okay, that's the only thing we have any say over at this point. McDonald: Right, and that's all the plan addresses too. That's why all this other stuff isn't in there. Mark. Larson: Yeah, I've got one. Sorry. Dennis mentioned that the blacktop was put in what, 2 years ago? At the middle school. The blacktop that you mentioned. When they expanded the blacktop at the school. Generous: For parking on the north side. Larson: So is that what's causing the problem? I mean we've had incredible high rain amounts this last, well last year anyway. I mean I've had water problems in my home personally that has never happened in 20 years so what I'm trying to determine is it because they added the additional hard surface area and it sounds to me like you know, is the hard surface area then going to drain towards this pond? It kind of looks that way from what I'm seeing but it's a little difficult to read. Generous: Yeah, this is on the south side of the building so this isn't picking up the parking lot. Larson: Oh it's not? Generous: As a part of that project they put in a separate storm water pond north of the school. Larson: It's little isn't it? Generous: I don't know. Larson: Well I don't know, I was just, it's really hard to read this. Generous: ...yeah and this shows that southwest comer, the entire site so you have all the field to the east of it. Larson: So where is it draining from? To this pond. Generous: I assume it's coming down to this pond it would be the south side of the building and down into the right-of-way it would be on the west side of the building. Mike Murphy: Yeah, we prepared a drainage area map indicating, just based upon the existing contours out there, what is all draining toward this area of the site and it's quite a bit of impervious surface from the building and there's a large parking lot. There's a track up there... Larson: But he just said the parking lot's not going to drain this way so that's not going to be... Planning Commission Meeting — February 7, 2006 Mike Murphy: Well there's service drives around the building. There's a parking lot on the side of the site draining to the west so it's, I don't have the numbers right in front of me but I had submit a drainage calculations and I believe it was somewhere between like 3 or 4 or 5 acres or something like that that drains to the southeast comer. Larson: That's not up to me to call. Dennis Clark: If I can address the Chair one more time? There's an issue with, that needs to be solved. McDonald: Well at this point the open meeting session has been closed. I think what I'm going to have to do is defer that. The opportunity was earlier to bring that up. As has been stated, the only real issue before us that we can look at is the pond itself. Anything else that would deal with that is probably beyond the scope of this particular meeting. So I apologize for that but that's what we have to do. We've got quite a few things to get through today. Mark, you were skipped. Do you want to? Undestad: No. McDonald: Well I guess I really don't have too much to add to all this. I think that staff you know does need to stay in touch as far as where all this is going to go. Any input we can provide to alleviate some of these other problems I think we should go ahead and do. Having said that, can I have a motion before the commission. Keefe: Yeah I'll make a motion. Planning Commission recommends approval of Interim Use Permit #06-03 to permit grading of approximately 3,400 cubic yards for an infiltration basin and drainage swale, plans prepared by Larson Engineering of Minnesota dated December 19, 2005 subject to the following conditions, number 1 through 23. McDonald: Okay. Do I have a second? Zorn: I second. Keefe moved, Zorn seconded that the Planning Commission recommends approval of Interim Use Permit #06-03 to permit the grading of approximately 3,400 cubic yards for a infiltration basin and drainage swales, plans prepared by Larson Engineering of Minnesota, dated December 19, 2005 subject to the following conditions: The applicant shall provide the City with a cash escrow or letter of credit in the amount of $5,600.00 to guarantee erosion control measures and site restoration and compliance with the interim use permit. 2. Verify the existing 24 -inch culvert has sufficient capacity before replacing the private drive entrance. 7 0 Planning Commission Meeting— February 7, 2006 3. The applicant must provide a proposed haul route for review and approval. 4. If fill is coming from and/or going to another site in Chanhassen, a separate grading permit will be required for the other property. 5. All disturbed areas as a result of construction are required to be reseeded and mulched within two weeks of site grading. 6. An erosion control blanket must be installed on all sides around the infiltration basin. All disturbed areas as a result of construction are required to be sodded or reseeded and mulched within two weeks of site grading. 7. Submit a full size drainage area map. 8. Add City Detail Plates Nos. 3101, 3102, 3103, 5300, 5301 and 5302. 9. Show rock construction entrance per Detail Plate No. 5301. The applicant shall construct and maintain a rock construction access to the site. Access to the site shall be restricted to this access point only. 10. The applicant shall obtain and comply with all permit requirements of the Watershed District and MnDOT. 11 _ Revise the existing storm sewer flow direction in all plans to match. 12. The applicant shall supply the City with a mylar as -built survey prepared by a professional engineer upon completion of filling and/or excavation to verify the grading plan has been performed in compliance with the proposed plan. 13. A plumbing permit must be obtained before installing the storm sewer piping. 14. The applicant shall provide a cross section for the filtration area showing the elevation of the drain tile and the trenches, as well as a cross section of the trench and details of the material used. The drain file trenches shall be lined with drainage fabric (4% to 6% open space) and filled with pea rock at a depth of at least 18 inches and 3 feet wide. The bottom of the entire filtration basin shall be backfilled with a mixture of 50% coarse clean sand, 25% compost, 25% loamy topsoil for a minimum depth of 6 inches (from approximately 1034.5 to 1035.0). The rest of the area shall be top -dressed with native topsoil. CB -1 shall be revised to be an open beehive inlet at an approximate elevation of 1037 for handling large storm event runoff if the calculations for rate control work out to avoid overwhelming the filtration area and having long periods (greater than 72 hours) of ponding. 15. Erosion control blanket/turf reinforcement mat (MnDOT Category 5) shall be used for restoration of the exposed slope from the emergency overflow to the ditch along Highway 41 within 7 days of final grade. The blanket shall be specified and a detail provided. Erosion 91 0 • Planning Commission Meeting — February 7, 2006 control blanket shall be installed on any exposed soils south of the private drive within 24 hours of final grade. 16. A seed mix for shaded, wooded areas shall be specified in the plan, along with the proposed rate of application. A seed mix for the filtration area and slopes shall also be specified. 17. The rip rap at the flared -end section at the south end of the 24 -inch pipe south of the private drive shall be replaced. 18. Runoff from the storm sewer system from the school shall be controlled during construction. The water shall be conveyed through a non-erosive means to the Highway 41 ditch through the job site. 19. Erosion control blanket category 2 or 3 shall be installed within the filtration area within 24 hours of connecting the 18 -inch PVC to the basin. The blanket shall be applied following a seeding. Remaining exposed soils on site shall be mulched and seeded or sodded within 14 days of final grade. 20. The silt fence used shall be a City of Chanhassen type 1 silt fence; monofilament silt fence with metal T -posts, 6 foot maximum spacing and 3 plastic zip ties in the top 8 inches of the fabric. The silt fence specified for the filtration area shall be labeled as "Installed after drain tile installation." 21. A rock construction exit pad shall be installed from the bituminous edge 40 to 50 feet long into the job site. 22. Street sweeping shall be completed within 24 hours should soil be tracked upon paved surfaces. 23. Catch basin inlet control shall be provided for the catch basins adjacent to the school building if tracking of soil becomes a problem on the paved surfaces." All voted in favor and the motion carried unanimously with a vote of 6 to 0. PUBLIC HEARING: PINEHURST REPLAT: REOUEST FOR PRELIMINARY AND FINAL PLAT APPROVAL TO SUBDIVIDE APPROXIMATELY 28 ACRES WITH VARIANCES ON PROPERTY ZONED SINGLE-FAMILY RESIDENTIAL (RSF) DISTRICT, AND THE VACATION OF DRAINAGE AND UTILITY EASEMENTS LOCATED AT PINEHURST DRIVE AND GALPIN BOULEVARD. APPLICANT: LENNAR CORPORATION (LUNDGREN BROS. CONSTRUCTION. INC.) — PLANNING CASE NO. 06-07. Public Present: Name Address Troy Bader 2244 Lake Lucy Road 4 Planning Commission 0 Minnetonka Middle School West IUP Planning Case No. 06-03 February 7, 2006 Page 4 of 5 RECOMMENDATION Staff recommends that the Planning Commission adopt the following motion: "The Planning Commission recommends approval of Interim Use Permit #06-03 to permit the grading of approximately 3,400 cubic yards for a infiltration basin and drainage swales, plans prepared by Larson Engineering of Minnesota, dated December 19, 2005 subject to the following conditions: 1. The applicant shall provide the City with a cash escrow or letter of credit in the amount of $5,600.00 to guarantee erosion control measures and site restoration and compliance with the interim use permit. 2. Verify the existing 24 -inch culvert has sufficient capacity before replacing the private drive entrance. 3. The applicant must provide a proposed haul route for review and approval. 4. If fill is coming from and/or going to another site in Chanhassen, a separate grading permit will be required for the other property. 5. All disturbed areas as a result of construction are required to be reseeded and mulched within two weeks of site grading. 6. An erosion control blanket must be installed on all sides around the infiltration basin. All disturbed areas as a result of construction are required to be sodded or reseeded and mulched within two weeks of site grading. 7. Submit a full size drainage area map. 8. Add City Detail Plates Nos. 3101, 3102, 3103, 5300, 5301 and 5302. 9. Show rock construction entrance per Detail Plate No. 5301. The applicant shall construct and maintain a rock construction access to the site. Access to the site shall be restricted to this access point only. 10. The applicant shall obtain and comply with all permit requirements of the Watershed District and MnDOT. 11. Revise the existing storm sewer flow direction in all plans to match. 12. The applicant shall supply the City with a mylar as -built survey prepared by a professional engineer upon completion of filling and/or excavation to verify the grading plan has been performed in compliance with the proposed plan. 13. A plumbing permit must be obtained before installing the storm sewer piping. 14. The applicant shall provide a cross section for the filtration area showing the elevation of the draintile and the trenches, as well as a cross section of the trench and details of the material used. The draintile Planning Commission 0 • Minnetonka Middle School West IUP Planning Case No. 06-03 February 7, 2006 Page 5 of 5 trenches shall be lined with drainage fabric (4% to 6% open space) and filled with pea rock at a depth of at least 18 inches and 3 feet wide. The bottom of the entire filtration basin shall be backfilled with a mixture of 50% coarse clean sand, 25% compost, 25% loamy topsoil for a minimum depth of 6 inches (from approximately 1034.5 to 1035.0). The rest of the area shall be top -dressed with native topsoil. CB -1 shall be revised to be an open beehive inlet at an approximate elevation of 1037 for handling large storm event runoff if the calculations for rate control work out to avoid overwhelming the filtration area and having long periods (greater than 72 hours) of ponding. 15. Erosion control blanket/turf reinforcement mat (MnDOT Category 5) shall be used for restoration of the exposed slope from the emergency overflow to the ditch along Highway 41 within 7 days of final grade. The blanket shall be specified and a detail provided. Erosion control blanket shall be installed on any exposed soils south of the private drive within 24 hours of final grade. 16. A seed mix for shaded, wooded areas shall be specified in the plan, along with the proposed rate of application. A seed mix for the filtration area and slopes shall also be specified. 17. The rip rap at the flared -end section at the south end of the 24 -inch pipe south of the private drive shall be replaced. 18. Runoff from the storm sewer system from the school shall be controlled during construction. The water shall be conveyed through a non-erosive means to the Highway 41 ditch through the job site. 19. Erosion control blanket category 2 or 3 shall be installed within the filtration area within 24 hours of connecting the 18 -inch PVC to the basin. The blanket shall be applied following a seeding. Remaining exposed soils on site shall be mulched and seeded or sodded within 14 days of final glade. 20. The silt fence used shall be a City of Chanhassen type 1 silt fence; monofilament silt fence with metal T -posts, 6 foot maximum spacing and 3 plastic zip ties in the top 8 inches of the fabric. The silt fence specified for the filtration area shall be labeled as "Installed after drain tile installation." 21. A rock construction exit pad shall be installed from the bituminous edge 40 to 50 feet long into the job site. 22. Street sweeping shall be completed within 24 hours should soil be tracked upon paved surfaces. 23. Catch basin inlet control shall be provided for the catch basins adjacent to the school building if tracking of soil becomes a problem on the paved surfaces." ATTACHMENTS 1. Findings of Fact and Recommendation. 2. Development Review Application. 3. Reduced Copy Topographic Survey. 4. Reduced Copy Grading and Erosion Control Plan. 5. Reduced Copy Utility Plan. gAplan12006 planning cases\06-03 minnetouka mule school west iup\staff report mtka middle school west.doc Zoom (Jut NORTH Search Distance Selected Parcel Information Feet LBuffer SOUTH IIPID IlSite Address IlTaxnaver IlAddress 110ty. State ZIP 11250033000 116421 HAZELTINE BLVD HIND SCHOOL DIST 276 11261 SCHOOL AVE IIEXCELSIOR , MN 55331 SCANNED 0 0 Carver County GIS Mapping Application ev 41 i� Copyrght ®2005, liner ixegota Legend Xwd Ten US Ngh"r; ./ W Nignnaps N Map Created on: CSAN ewmr nwne 1-13-2006 Likes Carver ""me'i County Aval Vha02002 This map was created using Carver County's Geographic Information Systems (GIS), it is a compilation of information and data from various City, County, State, and Federal offices. This map is not a surveyed or legally recorded map and is intended to be used as a reference. Carver County is not responsible for any inaccuracies contained herein. 0 0 Location Map Minnetonka Middle School West Interim Use Permit Planning Case No. 06-03 6421 Hazeltine Boulevard City of Chanhassen lle�men Fieq PYk I C MinnewasMa Repon Pe SUBJECT PROPERTY SCANNED This map is neither a legally recorded map nor a wrvey and is not intended to W usetl as are. This rtap is a tonpilation of remrds, information and data located in various city, wuny, state and federal offices and What awmare regarding the area shown, and is to be used for reference purposes only. The City does not warrant that the Geographic Infomabon System (GIS) Data used to prepare this map are error free, sW the City does not represent that Ne GIS Data can ce used to navigational, tracking a any other purpose rewiring exaWing meawnanard of distar¢e or direction or precision in the dapcdon al geographic features. R more or dscr p i is are found pease contact 952-227-1107. The preceding disclaimer is Woinded pursuant to Minnesota Statutes §666.03. Su W. 21 (2000), and the user of this map w1aiOWedges Nat the City shall not tie liable fa any daragas, and ea nessly waives afi Claim, and agrees to defend, indemnity, and hold hamiess Ne City from any and WI clalma brought by User, its employees or agents, or third l a des whits arise out W the users access or use of data provided. g -,? 1 a ] 3 = 45S%* 75:rd9 47 6't'��SSF2 JAN 2 6 '116 CITY OF CHANN ASS '.Y ✓ � U S POST—d I.039r CYE1 EB Z� `r 8013768 R A• 7700 Market Boulevard RECEIVED P.O. Box 147 Chanhassen, Minnesota 55317 FEB 0 u 2006 www.ci.chanhassen. mn.us CITY OF CHANHASSEN NIXIE 553 1 06 02/01/05 RETURN TO SENDER NOT DELIVERABLE UNAMLLETo FORWARDESSED 9C= 55317014747 *0676-10420-26-44 �l�alnla�ul��n11'Ilin�llnllnllllu ll1nl11 ul1n11111u1 � �d &L a,Q_e CCUVLeZf C -C t— -4-& / ' ` rte. 4%it fo UTF IND SCHOOL DIST 276 "clets -c� 9GAWD I:III:IIfI:Illlfffll:::fllfffllllififfllffilfliflfllfllfllfffl ChWhNotice of ^ublic Hearing assen Planning Commission Meet9g, Date & Time: Tuesday, February 7, 2006 at 7:00 p.m. Location: City Hall Council Chambers 7700 Market Blvd. Request for an Interim Use Permit to permit over 1,000 cubic Proposal: yards of grading on property zoned Office& Institutional district — MINNETONKA MIDDLE SCHOOL WEST Planning File: 06-03 Applicant: Independent School District No. 276 Property 6421 Hazeltine Blvd. (Highway 41) Location: I A location map Is on the reverse side of this notice. The purpose of this public hearing is to inf� you about the yy applicant's request and to obtain input fro the neighborhood about this project. During the meeting, the Chair will lead the public hearing through the following steps: What Happens at the Meeting: 1. Staff will give an overview of the proposed project. 2. The applicant will present plans on the project. 3. Comments are received from the public. 4. Public hearing is closed and the Commission discusses the project. If you want to see the plans before the meeting, please stop by City Hall during office hours, 8:00 a.m. to 4:30 p.m., Monday through Friday. If you wish to talk to someone about this project, please contact Robert Generous at 952-227-1131 Questions & or e-mail baenerousOci.chanhassen.mn.us. If you choose to Comments: submit written comments, it is helpful to have one copy to the department in advance of the meeting. Staff will provide copies to the Commission. The staff report for this item will be available online at http://206.10.76.6/weblink7 the Thursday prior to the Planning Commission meeting. City Review Procedure: • Subdivisions, Planned Unit Developments, Site Plan Reviews, Conditional and Interim Uses, Wetland Alterations, Rezonings, Comprehensive Plan Amendments and Cdp'de Amendments require a public hearing before the Planning Commission. City within 500 feet of the subject site to be notified of the ordinances require all property application In writing. Any Interested parry Is invited to attend the meeting. • Staff prepares a report on the subject application that includes all pertinent Information and a recommendation. These reports are available by request. At the Planning Commission meeting, staff will give a verbal overview of the report and a recommendation. The Item will be opened for the public to speak about the proposal as a part of the hearing process. The Commission will close the public hearing and discuss the item and make a recommendation to the City Council. The City Council may reverse, affirm or modify wholly or partly the Planning Commission's recommendation. Rezonings, land use and code amendments take a simple majority vote of the City Council except rezonings and land use amendments from residential to commerciaUndustrlal. • Minnesota State Statute 519.99 requires all applications to be processed within 60 days unless the applicant waives this standard. Some applications due to their complexity may take several months to complete. Any person wishing to follow an Item through the process should check with the Planning Department regarding Its status and scheduling for the City Council meeting. • A neighborhood spokesperson/representative Is encouraged to provide a contact for the city. Often developers are encouraged to meet with the neighborhood regarding their proposal. Staff Is also available to review the project with any interested person(s). • Because the Planning Commission holds the public hearing, the City Council does not. Minutes are taken and any correspondence regarding the application will be included In the report to the City Council. If you wish to have something to be included In the report, lease contact the Planning Staff person named on the notification. SCANNED 553 NTOy SENDE.n RETURN pppRESS pETERSMOvEOR LEFT NFORWPRO NASU-F TO SEaOt370-104g0 8FZaT6 44 g0; 55317014747 i!lh�u�l'1u��nn��nl��nthll��l�lh��lll�l�n��!1 11'IIeVl19wonal. msoe«decdm «gedsim M f dprea na ahh•act 952-227-110]. T ... amer is PmAded W!suart b Afmao!a SleMas §4ffi.03, Sub& 21 (201)(11 mM die user Of fie map ad-owedgm dlm the Cay Shall not be fable 1« my danhagm, and eW essly waive M dahhha, ahM apse to deland, incimmily, and tgld bamiea fie City fhotn any and all deihhha �SSFti JA9 2 6 '16 CITY OF CHANHASA 7700 Market Boulevard P.O. Box 147 Chanhassen, Minnesota 55317 VUN—Po . r�=0.39 " FMEI ER e 8013768 • •• www.b.chanhassen.mn.us �W p� I) ACD SCANNED Ll KAREN SIGNE PETERSON FWD 2240 MELODY HILL RD EXCELSIOR, MN 55331 -8891 IIIIIIII IIIIFIIIIIIIIIIIIIIIfill IItiIlIF1!11IIfillIIIIIIIIIIIII ChANotice of Public Hearing `I ssen Planning Commission Meeti� Date & Time: Tuesday, February 7 2006 at 7:00 p.m. Location: City Hall Council Chambers, 7700 Market Blvd. Request for an Interim Use Permit to permit over 1,000 cubic Proposal: yards of grading on property zoned Office& Institutional district — MINNETONKA MIDDLE SCHOOL WEST Planning File: 06-03 Applicant: Independent School District No. 276 Property 6421 Hazeltine Blvd. (Highway 41) Location: I A location map Is on the reverse side of this notice. The purpose of this public hearing is to infor_rn you about the applicant's request and to obtain input from the neighborhood about this project. During the meeting, the Chair will lead the public hearing through the following steps: What Happens at the Meeting: 1. Staff will give an overview of the proposed project. 2. The applicant will present plans on the project. 3. Comments are received from the public. 4. Public hearing is closed and the Commission discusses the project. If you want to see the plans before the meeting, please stop by City Hall during office hours, 8:00 a.m. to 4:30 p.m., Monday through Friday. If you wish to talk to someone about this project, please contact Robert Generous at 952-227-1131 Questions & or e-mail bboenerous@ci.chanhassen.mn.us. If you choose to Comments: submit written comments, it is helpful to have one copy to the department in advance of the meeting. Staff will provide copies to the Commission. The staff report for this item will be available online at httu://206.10.76.6/webllnk7 the Thursday prior to the Planning Commission meeting. City Review Procedure: • Subdivisions, Planned Unit Developments, Site Plan Reviews, Conditional and Interim Uses, Wetland Alterations, Rezonings, Comprehensive Plan Amendments and Code Amendments require a public hearing before the Planning Commission. City ordinances require all property within 500 feet of the liubject site to be notified of the application in writing. Any Interested party is invited to attend the meeting. • Staff prepares a report on the subject application that Includes all pertinent information and a recommendation. These reports are available by request. At the Planning Commission meeting, staff will give a verbal overview of the report and a recommendation. The item will be opened for the public to speak about the proposal as a part of the hearing process. The Commission will close the public hearing and discuss the Item and make a recommendation to the City Council. The City Council may reverse, affirm or modify wholly or partly the Planning Commission's recommendation. Rezonings, land use and code amendments take a simple majority vote of the City Council except rezonings and land use amendments from residential to commerciavindustrial. • Minnesota State Statute 519.99 requires all applications to be processed within 60 days unless the applicant waives this standard. Some applications due to their complexity may take several months to complete. Any person wishing to follow an Item through the process should check with the Planning Department regarding its status and scheduling for the City Council meeting. • A neighborhood spokesperson/representative is encouraged to provide a contact for the city. Often developers are encouraged to meet with the neighborhood regarding their proposal. Staff Is also available to review the project with any Interested person(s). • Because the Planning Commission holds the public hearing, the City Council does not. Minutes are taken and any correspondence regarding the application will be included in the report to the City Council. If you wish to have something to be Included In the report, lease contact the Planning Staff person named on the notification. SCANNED 0 0 Affidavit of Publication Southwest Suburban Publishing State of Minnesota) )SS. County of Carver ) Laurie A. Hartmann, being duly sworn, on oath says that she is the publisher or the authorized CITY OF CHAConth F agent of the publisher of the newspapers known as the Chaska Herald and the Chanhassen Vil- lager has full knowledge the facts herein as follows: CAR ER &% and of stated - eacon NOTICE OF PUBI.punty I (A) These newspapers have complied with the requirements constituting qualification as a legal PLANNING CAS➢e Thu newspaper, as provided by Minnesota Statute 331A.02, 331A.07, and other applicable laws, as NOTICEISHERimuing the Chanhassegogran amended. Commission will 14 West hearrngonTuesdayN}rd intE (B) The printed public notice that is attached to this Affidavit and identified as No. at 7:00 p.m. in the Co was published on the date or dates and in the newspaper stated in the attached Notice and said in Chanhassen CityHanng it E Notice is hereby incorporated as pari of this Affidavit Said notice was cut from the columns of Blvd. The purpose of tne. the newspaper specified. Printed below is a copy of the lower case alphabet from A to Z, both to consider a request gowinc Use Permit to permitourougF inclusive, and is hereby acknowledged as being the kind and size of type used in the composition yards of grading on nldeos and publication of the Notice: Minnetonka Public SclfeCp1 A plan showing thlt 00 the proposal is availabl review at City Hall dot business hours. All persons are invited to Public hearing and exi,a.e. opinions with respet proposal. Generous, Seni<ai:ne' 1011111 be n ro+ Aci ch t+- BA Phone: 9 TRI (PublishedintheChanhassi . on Thursday, January 26,6ung 4595) tov, abcdefghljkhnnopgr z B Laurie A. Hartmann Subscribed and sworn before me on this 1n-khday of _J 1111a'ii 2006 Notary Public RATE INFORMATION GWEN M. HADUENZ NOTARY PUBLIC-MRJIWA y,CgmriWpn FSM Jn 91.2110 Lowest classified rate paid by commercial users for comparable space.... $40.00 per column inch Maximum rate allowed by law for the above matter ................................ $40.00 per column inch Rate actually charged for the above matter ..... ... .... ...... _......................... $11.51 per column inch SCANNED Public Hearing Notification Area (500 feet) Minnetonka Middle School West Interim Use Permit Planning Case No. 06-03 6421 Hazeltine Boulevard City of Chanhassen SCANNED �a "q State Hwy 7 OrcMNI i a�Alnne ,p � %qW v i a Wm, Nu C e AMXx�'XII i MemaiF PeA SUBJECT PROPERTY c O 3� ,a m L=_k2 L1u u�e..a sh 4. C Z� V a poi a k � 0 � qOb r I l 1m SCANNED Date: January 9, 2006 City of Chanhassen 7700 Market Boulevard Chanhassen, MN 55317 (952) 227-1100 To: Development Plan Referral Agencies From: Planning Department By: Robert Generous, Senior Planner Subject: MINNETONKA MIDDLE SCHOOL WEST: Request for an interim use permit to permit over 1,000 cubic yards of grading on property zoned Office& Institutional district located at 6421 Hazeltine Blvd. (Highway 41). Planning Case: 06-03 The above described application for approval of a land development proposal was filed with the Chanhassen Planning Department on January 6, 2006. The 60 -day review period ends March 7, 2006. In order for us to provide a complete analysis of issues for Planning Commission and City Council review, we would appreciate your comments and recommendations concerning the impact of this proposal on traffic circulation, existing and proposed future utility services, storm water drainage, and the need for acquiring public lands or easements for park sites, street extensions or improvements, and utilities. Where specific needs or problems exist, we would like to have a written report to this effect from the agency concerned so that we can make a recommendation to the Planning Commission and City Council. This application is scheduled for consideration by the Chanhassen Planning Commission on February 7, 2006 at 7:00 p.m. in the Council Chambers at Chanhassen City Hall. We would appreciate receiving your comments by no later than January 27, 2006. You may also appear at the Planning Commission meeting if you so desire. Your cooperation and assistance is greatly appreciated. City Departments: a. City Engineer b. City Attorney c. City Park Director d. Fire Marshal e. Building Official L Water Resources Coordinator g. Forester 2. Carver Soil & Water Conservation District 3. MN Dept. of Transportation 4. MN Dept. of Natural Resources 5. U.S. Army Corps of Engineers 6. U.S. Fish & Wildlife Carver County a. Engineer b. Environmental Services 8. Watershed District Engineer a. Riley -Purgatory -Bluff Creek b. Lower Minnesota River c. Minnehaha Creek 9. Telephone Company (Qwest or Sprint/United) 10. Electric Company (Xcel Ener2y or MN Valley) 11. Mediacom 12. CenterPoint Energy Minnegasco 13. Other - aeuean 14. Other - cliff OF MEMORANDUM MANUAVEN TO: Bob Generous, Senior Planner • 7700 Market Boulevard FROM: Mak Sweidan, Engineer( PO Bax 147 Chanhassen, MN 55317 The applicant is requesting an interim use permit to grade approximately 3,400 cubic Finance Phone: 952.227.1140 DATE: January 18, 2006 Administration reduce downstream erosion and sedimentation along Highway 41. Phone: 952 227.1100 SUBJ: Interim Use Permit to Grade in Excess of 1000 Cubic Yards at 6421 Fax: 952.227 1110 Hazeltine Boulevard (Highway 41) Building Inspections Minnetonka Middle School West Phone: 952.227.1180 Interim Use Permit File No. 2006-03 & Grading Permit File 06-01 Fax: 952 227.1190 will receive drainage from the east side of the site and the existing building's roof and Engineering Phone: 952.227.1160 GRADING/DRAINAGMROSION CONTROL Fax: 952.227.1170 The applicant is requesting an interim use permit to grade approximately 3,400 cubic Finance Phone: 952.227.1140 yards of material to construct an infiltration basin on the existing school property to Fax: 952.227.1110 reduce downstream erosion and sedimentation along Highway 41. Park Recreation Phone:: 952.227..11201120 The site drains from east to west, via an existingswale and two storm sewer lines, Fax: 952.227.1110 toward the existing ditch along Highway 41. The swale is proposed to be filled and Recreation Center the 125 -foot long existing southern storm sewer will be removed. The plans show a 2310 Coulter Boulevard proposed infiltration basin with three rows of 4 -inch draintile. The infiltration basin Phone: 952227.1400 will receive drainage from the east side of the site and the existing building's roof and Far 952227.1404 discharge to the Highway 41 ditch through an 8 -inch PVC pipe. The applicant must Planning & verify that the existing 24 -inch culvert along Highway 41 has sufficient capacity Natural Resources before replacing the private drive entrance. Phone: 952.227.1130 Fax:952.227.1110 The applicant should be aware that if the fill is coming from and/or going to another Public Works site in Chanhassen, a separate grading permit will be required for the other property. 1591 Park Road Staff has not yet received a proposed haul route as required. Staff is recommending Phone: 952.227.1300 that the applicant provide a proposed haul route for review and approval. The Fax: 952.227.1310 hauling operation is anticipated to begin as soon as permit approval is obtained. Senior Center Permitted hours of operation will be 7:00 a.m. to 6:00 p.m., Monday through Friday, Phone: 952.227.1125 and 9:00 a.m. to 5:00 p.m. on Saturday with no work permitted on Sunday or legal Fax: 952.227.1110 holidays. The applicant should be aware that any off-site grading will require an Web She easement from the appropriate property owner. www.d.chanhassen.mn.us Erosion control has been shown on the plan in accordance with the City's Standard Detail Plates. Staff recommends that an erosion control blanket be installed on the sides of the infiltration basin. All disturbed areas as a result of construction are required to be sodded or reseeded and mulched within two weeks of site grading. An interim use permit expires one year from the date of approval from the City Council. The permit may be renewed, however, on an annual basis subject to City Council approval. The applicant will need to request a formal extension 45 days prior to the expiration date. Financial security to guarantee restoration and erosion control measures will be required with the permit. The City of Chanhassen • A growing community with clean lakes, quality schools, a charming downtown, thriving businesses, winding trails, and beautiful parks. A peal place to live, work, and play. Bob Generous 6421 Hazeltine Boulevard January 18, 2006 Page 2 RECOMMENDED CONDITIONS OF APPROVAL 1. The applicant shall provide the City with a cash escrow or letter of credit in the amount of $5,600.00 to guarantee erosion control measures and site restoration and compliance with the interim use permit. 2. Verify the existing 24 -inch culvert has sufficient capacity before replacing the private drive entrance. 3. The applicant must provide a proposed haul route for review and approval. 4. If fill is coming from and/or going to another site in Chanhassen, a separate grading permit will be required for the other property. 5. All disturbed areas as a result of construction are required to be reseeded and mulched within two weeks of site grading. 6. An erosion control blanket must be installed on all sides around the infiltration basin. All disturbed areas as a result of construction are required to be sodded or reseeded and mulched within two weeks of site grading. 7. Submit a full size drainage area map. 8. Add City Detail Plates Nos. 3101, 3102, 3103, 5300, 5301 and 5302. 9. Show rock construction entrance per Detail Plate No. 5301. The applicant shall construct and maintain a rock construction access to the site. Access to the site shall be restricted to this access point only. 10. The applicant shall obtain and comply with all permit requirements of the Watershed District and MnDOT. 11. Revise the existing storm sewer flow direction in all plans to match. 12. The applicant shall supply the City with a mylar as -built survey prepared by a professional engineer upon completion of filling and/or excavation to verify the grading plan has been performed in compliance with the proposed plan. c: Paul Oehme, Director of Public Works/City Engineer Alyson Fauske, Assistant City Engineer g:\eng\gmdmg perm W06-0IVup.dw Engineering • • bC�-v3 CITY OF MEMORANDUM CHA NSEN TO: Bob Generous, Senior Planner yards of material to construct an infiltration basin on the existing school property to Fax: 952.227.1110 reduce downstream erosion and sedimentation along Highway 41. 7700 Market Boulevard FROM: Mak Sweidan,Engineer �V" PO Box 147 Recreation Center the 125 -foot long existing southern storm sewer will be removed. The plans show a Chanhassen, AN 55317 proposed infiltration basin with three rows of 4 -inch draintile. The infiltration basin Phone: 952.227.1400 will receive drainage from the east side of the site and the existing building's roof and DATE: January 18, 2006 Administration verify that the existing 24 -inch culvert along Highway 41 has sufficient capacity Natural Resources Phone: 952.227.1100 SUBJ: Interim Use Permit to Grade in Excess of 1000 Cubic Yards at 6421 Fax: 952.227.1110 The applicant should be aware that if the fill is coming from and/or going to another Hazeltine Boulevard (Highway 41) Building Inspections 1591 Park Road Minnetonka Middle School West Phone: 952.227.1180 that the applicant provide a proposed haul route for review and approval. The Interum Use Permit File No. 2006-03 & Grading Permit File 06-01 Fax: 952.2271190 Senior Center Permitted hours of operation will be 7:00 a.m. to 6:00 p.m., Monday through Friday, Engineering Phone: 952.227.1160 GRADING/DRAINAGWEROSION CONTROL Fax 952.227.1170 The applicant is requesting an interim use permit to grade approximately 3,400 cubic Finance Phone: 952.227.1140 yards of material to construct an infiltration basin on the existing school property to Fax: 952.227.1110 reduce downstream erosion and sedimentation along Highway 41. Park & Recreation The site drains from east to west, via an existing swale and two storm sewer lines, Phone: 9522271120 Fax 952.227.1110 toward the existing ditch along Highway 41. The swale is proposed to be filled and Recreation Center the 125 -foot long existing southern storm sewer will be removed. The plans show a 2310 Coulter Boulevard proposed infiltration basin with three rows of 4 -inch draintile. The infiltration basin Phone: 952.227.1400 will receive drainage from the east side of the site and the existing building's roof and Fax: 952.227.1404 discharge to the Highway 41 ditch through an 8 -inch PVC pipe. The applicant must Planning & verify that the existing 24 -inch culvert along Highway 41 has sufficient capacity Natural Resources before replacing the private drive entrance. Phone: 952.227.1130 - - - - - -- Fax:952.227.1110 The applicant should be aware that if the fill is coming from and/or going to another Public Warks site in Chanhassen, a separate grading permit will be required for the other property. 1591 Park Road Staff has not yet received a proposed haul route as required. Staff is recommending Phone: 952.227.1300 that the applicant provide a proposed haul route for review and approval. The Fax: 952.227.1310 hauling operation is anticipated to begin as soon as permit approval is obtained. Senior Center Permitted hours of operation will be 7:00 a.m. to 6:00 p.m., Monday through Friday, Phone: 952.227.1125 and 9:00 a.m. to 5:00 p.m. on Saturday with no work permitted on Sunday or legal Fax:952.227.1110 holidays. The applicant should be aware that any off-site grading will require an Web Site easement from the appropriate property owner. www.ci.chanhassen.mn.us Erosion control has been shown on the plan in accordance with the City's Standard Detail Plates. Staff recommends that an erosion control blanket be installed on the sides of the infiltration basin. All disturbed areas as a result of construction are required to be sodded or reseeded and mulched within two weeks of site grading. An interim use permit expires one year from the date of approval from the City Council. The permit may be renewed, however, on an annual basis subject to City Council approval. The applicant will need to request a formal extension 45 days WANIXEo prior to the expiration date. Financial security to guarantee restoration and erosion control measures will be required with the permit. The City of Chanhassen • A growing community with dean lakes, quality schools, a charming downtown, thriving businesses, winding trails, and beautiful parks. A gent place to live, work, and play. 0 0 Bob Generous 6421 Hazeltine Boulevard January 18, 2006 Page 2 RECOMMENDED CONDITIONS OF APPROVAL 1. The applicant shall provide the City with a cash escrow or letter of credit in the amount of $5,600.00 to guarantee erosion control measures and site restoration and compliance with the interim use permit. 2. Verify the existing 24 -inch culvert has sufficient capacity before replacing the private drive entrance. 3. The applicant must provide a proposed haul route for review and approval. 4. If fill is coming from and/or going to another site in Chanhassen, a separate grading permit will be required for the other property. 5. All disturbed areas as a result of construction are required to be reseeded and mulched within two weeks of site grading. 6. An erosion control blanket must be installed on all sides around the infiltration basin. All disturbed areas as a result of construction are required to be sodded or reseeded and mulched within two weeks of site grading. 7. Submit a full size drainage area map. 8. Add City Detail Plates Nos. 3101, 3102, 3103, 5300, 5301 and 5302. 9. Show rock construction entrance per Detail Plate No. 5301. The applicant shall construct and maintain a rock construction access to the site. Access to the site shall be restricted to this access point only. 10. The applicant shall obtain and comply with all permit requirements of the Watershed District and MnDOT. 11. Revise the existing storm sewer flow direction in all plans to match. 12. The applicant shall supply the City with a mylar as -built survey prepared by a professional engineer upon completion of filling and/or excavation to verify the grading plan has been performed in compliance with the proposed plan. c: Paul Oehme, Director of Public Works/City Engineer Alyson Fauske, Assistant City Engineer g: enftreding pelmits\06-0I\iup.dm 03NNAle CARVER a?*- 4%1%9 Cam` 219 East Frontage Road 1946 % Waconia, MN 55387 & WA►TER o Phone: 952-442-5101 °nh► sxc Fax: 952-442-5497 NSERVATION DISTRKT litlnc//�.eaamr.mn.us/SWCD/SWCD main.ntml Mission St"went To provide leadership in conservation and teach stewardship of the soil, water, and related resources through a balanced, cooperative prograre that protects, restores, and improves those resources. January 19, 2005 Robert Generous, Senior Planner City of Chanhassen 7700 Market Boulevard Chanhassen, MN 55317 Re: Minnetonka Middle School West Mr. Generous: The SWCD has taken the opportunity to review the Minnetonka Middle School West plan. The plan reviewed is dated 11/23/05 with a City stamp of January 05, 2006. Please review and consider the following comments and suggestions regarding erosion and sediment controls, filtration area and NPDES compliance. Erosion Control 1. Erosion control blanket / turf reinforcement mat, MN DOT category 5 will be needed for restoration of the exposed slope from the emergency overflow to the ditch along Hwy 41 within 7 days of final grade. The blanket should be specified and a detail provided. 2. Erosion control blanket will also be needed for any exposed soils south of the private drive within 24 hours of final grade. 3. A seed mix for shaded, wooded areas is needed. A seed mix should be specified in the plan with the rate of application. A seed mix for the filtration area and slopes will also be needed. 4. Riprap replacement may be needed for the FES at the south end of the 24 -inch CMP south of the private drive unless the contractor can salvage adequate riprap on site. 5. Consideration will be needed to control the runoff from the storm sewer system from the school during construction. The water will need to be conveyed through a non-erosive means to the Hwy 41 ditch through the job site. A temporary slope drain or bypass pipe may be an option. A flexible temporary pipe placed down the slope to the ditch with energy dissipation at the discharge point. 6. Erosion control blanket category 2 or 3 is needed for the filtration area within 24 hours of connecting the 18 -inch PVC to the basin. The blanket must be applied following a seeding. 7. Remaining exposed soils on site must be mulched and seeded or sodded within 14 days of final grade. AN EQUAL OPPORTUNITY EMPLOYER Sediment Control 1. The silt fence used must be a City of Chanhassen type 1 silt fence; monofilament silt fence with metal T -posts, 6 foot maximum spacing and plastic 3 plastic zip ties in the top 8 inches of the fabric. 2. The silt fence specified for the filtration area should be labeled as installed after drain tile installation. 3. A rock construction exit pad is needed from the bituminous edge 40 to 50 feet long into the job site. 4. Street sweeping will be needed within 24 hours should soil be tracked upon paved surfaces. 5. Catch basin inlet control may also be needed for the CB's adjacent to the school building if tracking of soil becomes a problem on the paved surfaces. Filtration Area / Storm Sewer 1. A cross section is needed for the filtration area showing the elevation of the draintile and the trenches. 2. A cross section of the trench and details of the material used is also needed. The draintile trenches should be lined with drainage fabric (4% to 6% open space) and filled with pea rock at a depth of at least 18 inches and 3 feet wide. The bottom of the entire filtration basin should be backfilled with a mixture of 50% coarse clean sand, 25% compost, 25% loamy topsoil for a minimum depth of 6 inches (from approximately 1034.5 to 1035.0). The rest of the area could be top -dressed with native topsoil. 3. CB -1 could be an open beehive inlet at an approximate elevation of 1037 for handling large storm event runoff if the calculations for rate control work out to avoid overwhelming the filtration area and having long periods (greater than 72 hours) of ponding. SWPPP - If the total area disturbed by the project will be an acre or greater, a NPDES permit will be required for the development and be applied for and received from the MPCA by the Owner and operator of the site. - If necessary a completed SWPPP meeting NPDES conditions is needed for the development prior to application of the NPDES permit. If there are any questions or if I can be of further assistance please contact the SWCD office. Sincerely, Aaron Mlynek, CPESC Urban Conservation Technician c. Lori Haak, City of Chanhassen (email) CITY OF CHANHASSEN P O BOX 147 CHANHASSEN MN 55317 01/10/2006 9:40:52 AM Receipt No. 0000261 CLERK: danielle PAYEE: Larson Engineering of Minn 3524 Labore Road White Bear Lake MN 55110 Minnetonka Middle School West IUP ------------------------------------------------------- Use & Variance 425.00 Sign Rent 200.00 Recording Fees 50.00 Total 675.00 Cash 0.00 Check 90212 425.00 Check 90211 200.00 Check 90199 50.00 Change 0.00 SCANNED MINNETONKA MIDDLE SCHOOL WEST IUP $425 Interim Use Permit $200 Notification Sign $50 Recording Escrow $675 $425 Larson Engineering of Minnesota Check 90212 $200 Larson Engineering of Minnesota Check 90211 $50 Larson Engineering of Minnesota Check 90199 SCANNED Larson Engineering of Minnesota 3524 Labors Road White Bear Lake, Minnesota 55110-5100 651-481-9120 Fax: 651-481-9201 w .larsonengccom TRANSMITTAL To: Ms. Lori Haak Date: January 5, 2006 Company: City of Chanhassen Transmittal Number: Address: 7700 Market Blvd. 1/5/06 Chanhassen, MN 55317 Project Name: Minnetonka West Drainage Project No: 16 Improvements We are sending you the following: F- Calculations r Shop Drawings r Report r Change Order r Specifications r Other r— r Copy of Letter r Prints Sent Via: r Pick Up r Hand Deliver r Email r Messenger/Courier I' [JPS r Gmuod r Mail r 2nd Day r FedEx r 0�misht Copies Date Sht. No. Description 16 1/5/06 T Minnetonka West Drainage Improvements 4 6.5-0tt 16 1/5/06 CO Minnetonka West Drainage Improvements -1 6.sx11 16 1/5/06 C1 Minnetonka West Drainage Improvements d x vll 16 1/5/06 C2 Minnetonka West Drainage Im rvements K s I 1 1/5/06 $425 Interim use it a lication fee 1 1/5/06 $200 Development review fee These are transmitted as noted below: r For approval r For you use r For review and comment I�=moi Signed: CC: r As requested r Return corrected prints CITY OF RECEIVED SSEN JAN 0 5 2006 CNANHASSEN PLANNING DEPT r Resubmit for approval CITY OF RECEIVED SEN JAN 0 5 2006 CHAMASSEN PLANNING DEPT If enclosures are not as noted, please notify us at once. SCANNED LARSON ENGINEERING OF MINNESOTA 4m. Invoice Number Date Voucher Amunt Discounts Previous Pay Net Amunt plan application 12/31/05 0039765 50.00 0.00 0.00 50.00 City of Chanhassen Totals 50.00 0.00 0.00 50.00 Il 3 IC -126 SCANNED LARSON ENGINEERING OF MINNESOTA 90211 Invoice Number Date Voucher Amount Discounts Previous Pay Net Amount Minnetonak West Perm 1 1/4/05 0039797 200.00 0.00 0.00 200.00 City of Chanhassen Totals 200.00 0.00 0.00 200.00 11 1 14126 CITY RECEIVEDSSEN JAN 0 5 2006 CHANNASM PLANNING DEPT sem"o LARSON ENGINEERING OF MINNESOTA 90212 Invoice Number Date Voucher Amount Discounts Previous Pay Net Arnount Minnetonka Wes[ 1/4/05 0039798 425.00 0.00 0.00 425.00 City of Chanhassen Totals 425.00 0.00 0.00 425.00 II 2 IC -126 CITY RECEIVED JAN 0 5 2006 CHANHASSEN PLANNING DEPT S,... "rF City of Chanhassen 7700 Market Boulevard Invoice P.O. Box 147 Chanhassen, MN 55317 00F (952) 227-1100 MMIS To: Mike Condon Ship To: Minnetonka Public Schools 5621 County Road 101 Minnetonka, MN 55345 SALESPERSON DATE TERMS KTM 1/26/06 upon receipt NOTE: This invoice is in accordance with the Development Review Application submitted to the City by the Addressee shown above (copy attached) and must be paid prior to the public hearing scheduled for February 7. 2006. Make all checks payable to: City of Chanhassen Please write the following code on your check: Planning Case #06-03. If you have any questions concerning this invoice, call: (952)-227-1107. THANK YOU FOR YOUR BUSINESS! SCANNED CITY OF CHANHASSEN APPLICATION FOR EARTHWORK PERMIT Name and Address of Property Owner: ids nr �a`� t Cc_.lnval Di s+rl tt 2-110 _ ,26 "1 �1 S�4tp,ol �4ve. /:XGelSior- �Mwl S$331 Contact: /Li/C� G'o/YDoi✓ Phone 52 4e - Fax: Alternate Phone: Legal Description of subject property: Lot Block Subdivision Permit No. Name and Address of Excavator: Phone: Alternate Property Identification Number: 2 5 0 o 33 0 o o Site Address: 6 42.1 H a 2,,-1 t-: n e. Q LV D Description of work to be done: C rec.-+i' o r o f Jr-+cx+'i o^ bas -' n -to reclLkc.e. 6owins+rt vn e.rosia^ o, d& sad'ine ia�iavy Indicate the use or occupancy for which the proposed work is intended: W cvr �1* oy. bcas % ;S bw—i&g d C.X�tj'rnw sc.11.o�l ��oP�.rty Estimated quantity of excavation (cubic yards): 39 �d G Attach a plan showing the following: 1. Present elevations. 2. Proposed elevations. 3. Elevations of neighboring property within 15 feet of excavation. 4. Location of any buildings or structures on the property where the work is to be performed and the location of any buildings or structures on land of adjacent owners that are within 15 feet of the property or which may be affected by the proposed grading operations. I have read and understand the City ojCCCfhanhassen's General Requirements for obtaining a grading/earthwork permit. Signature of Applicant: /?/ /��iL�i G/�� Date: v a Office Use Only Date Received: $50 Application Fee Received: ❑ Yes ❑ No Approved ❑ Denied ❑ Receipt No. Date: Security Amount: $ Processed by: Receipt No. Date: Larson Engineering of Minnesota 3524 Labore Road White Bear Lake, MN 55110-5100 651.481.9120 Fax: 651.481.9201 �.larsonengr wm MINNETONKA WEST MIDDLE SCHOOL STORMWATER RUNOFF CALCULATIONS M LARSON ENGINEERING OF MINNESOTA DECEMBER 19, 2005 CONTENTS: 1. Stormwater Summary 2. HYDROCAD report for new site conditions (1 -year, 10 -year and 100 -year events) 3. Drainage area map SCANNED Larson Engineering o/ Minnesota 3524 Labore Road White Bear Lake, MN 55110-5100 651.481.9120 Fax: 651.481.9201 ww Arsonengr.c= Larson MINNETONKA WEST MIDDLE SCHOOL SUMMARY OF STORMWATER RUNOFF Feature Peak Runoff Rates 1 -yr Event 10- Event 100- r event Filtration Basin 0.63 cfs 3.61 cfs 4.13 cfs The stormwater runoff from the site will enter a new filtration basin for rate and quality control. The filtration basin will use draintile to assure adequate drawdown times and allow for increased usability of the grassed area. The filtration basin will discharge to the discharge to the MNDOT drainage ditch along highway 41 through an 8" PVC pipe. The discharge rates for the 10 -year and 100 -year rainfall events are below the maximum rate of 5 cfs allowed by MNDOT. `'' I c E d a � t 2 5 G 1 RCP � 7 18" 1Y 4" DT P PVC \ 12" RC Filtration Basin 1 _ \ O 0 D Subcat Reach on: Lj[lk Drainage Diagram for Runoff Calculations - Filtration Prepared by Larson Engineering 12/19/2005 HydroCAD® 7.10 s/n 001935 C 2005 HydroCAD Software Solutions LLC Runoff Calculations - Filtration Prepared by Larson Engineering Subcatchment A: Type// 24 -hr 1 -yr Rainfall=2.40" Page 2 Runoff = 0.13 cfs @ 12.22 hrs, Volume= 0.013 af, Depth> 0.55" Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 1 -yr Rainfall=2.40" Area (ac) CN Description 0.286 74 >75% Grass cover, Good, HSG C Tc Length Description 25.0 220 0.0110 0.1 Sheet Flow, Grass: Short n=0.150 P2=2.80" Subcatchment B: Runoff = 2.46 cfs @ 12.43 hrs, Volume= 0.304 af, Depth> 1.28" Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 1 -yr Rainfall=2.40" Area (ac) CN Description 1.170 74 >75% Grass cover, Good, HSG C 1.674 98 Impervious 2.844 88 Weighted Average Tc Length Slope Velocity Capacity Description min (feet) (ft/ft) (ftisec) (cfs) 38.0 250 0.0050 0.1 Sheet Flow, Grass: Short n=0.150 P2=2.80" 3.0 50 0.1100 0.3 Sheet Flow, Grass: Short n=0.150 P2=2.80" 2.9 350 0.0100 2.0 Shallow Concentrated Flow, Paved Kv= 20.3 fos 43.9 650 Total Subcatchment C: Runoff = 0.32 cfs @ 11.94 hrs, Volume= 0.014 af, Depth> 1.52" Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 1 -yr Rainfall=2.40" Area (ac) CN Description 0.032 74 >75% Grass cover, Good, HSG C 0.078 98 Impervious 0.110 91 Weighted Average Runoff Calculations - Filtration Prepared by Larson Engineering Tc Length Description Type 1124 -hr 1 -yr Rainfall=2.40" Page 3 2.6 25 0.0400 0.2 Sheet Flow, Grass: Short n=0.150 P2=2.80" 0.9 80 0.0290 1.4 Sheet Flow, Smooth surfaces n= 0.011 P2= 2.80" 3.5 105 Total Subcatchment D: Runoff = 0.37 cfs @ 11.98 hrs, Volume= 0.018 af, Depth> 1.04" Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 1 -yr Rainfall=2.40" Area (ac) CN Description 0.115 74 >75% Grass cover, Good, HSG C 0.089 98 Impervious 0.204 84 Weighted Average Tc Length Slope Velocity Capacity Description 6.2 85 0.0530 0.2 Sheet Flow, Grass: Short n=0.150 P2=2.80" 0.3 25 0.0600 1.5 Sheet Flow, Smooth surfaces n=0.011 P2=2.80" 6.5 110 Total Subcatchment E: Runoff = 0.08 cfs @ 11.90 hrs, Volume= 0.003 af, Depth> 2.17" Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 1 -yr Rainfall=2.40" Area (ac) CN Description 0.019 98 Impervious Subcatchment F: Runoff = 0.41 cfs @ 11.98 hrs, Volume= 0.019 af, Depth> 0.87' Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 1 -yr Rainfall=2.40" Area (ac) CN Description 0.192 74 >75% Grass cover, Good, HSG C 0.073 98 Impervious 0.265 81 Weighted Average Runoff Calculations - Filtration Prepared by Larson Engineering Tc Length Slope Velocity iin) (feet) (ft/ft) (ft/sec) 4.6 70 0.0780 0.3 1.3 110 0.0230 1.4 5.9 180 Total Type 11 24 -hr 1 -yr Rainfall=2.40" Page 4 Description Sheet Flow, Grass: Short n=0.150 P2=2.80" Sheet Flow, Smooth surfaces n=0.011 P2=2.80" Subcatchment G: Runoff = 2.49 cfs @ 12.03 hrs, Volume= 0.137 af, Depth> 0.98" Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 1 -yr Rainfall=2.40" Area (ac) CN Description 1.064 74 >75% Grass cover, Good, HSG C 0.613 98 Impervious 1.677 83 Weighted Average Tc Length Slope Velocity Capacity Description 1.1 60 0.0100 0.9 Sheet Flow, 0.013 af, Atten= 0%, Lag= 0.0 min Discarded = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of Primary = 0.13 cfs @ 12.22 hrs, Volume= Smooth surfaces n=0.011 P2=2.80" 5.8 48 0.0200 0.1 Sheet Flow, Grass: Short n=0.150 P2=2.80" 3.1 64 0.1700 0.3 Sheet Flow, Grass: Short n=0.150 P2=2.80" 0.4 25 0.0200 1.0 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fos 10.4 197 Total Pond 1: 4" DT Inflow Area = 0.286 ac, Inflow Depth > 0.55" for 1 -yr event Inflow = 0.13 cfs @ 12.22 hrs, Volume= 0.013 of Outflow = 0.13 cfs @ 12.22 hrs, Volume= 0.013 af, Atten= 0%, Lag= 0.0 min Discarded = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of Primary = 0.13 cfs @ 12.22 hrs, Volume= 0.013 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 55.99'@ 12.22 hrs Plug -Flow detention time= (not calculated: outflow precedes inflow) Center -of -Mass det. time= 0.0 min ( 891.8 - 891.8 ) Device Routing Invert Outlet Devices #1 Primary 55.67' 4.0" x 425.0' long Culvert CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 40.13' S= 0.0366T Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior #2 Discarded 56.77' 50.0' long x 20.0' breadth Broad -Crested Rectangular Weir Runoff Calculations - Filtration Prepared by Larson Engineering HydroCAD® 7.10 s/n 001935 © 2005 H Type 1124 -hr 1 -yr Rainfall=2.40" Page 5 Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Discarded OutFlow Max=0.00 cfs @ 0.00 hrs HW=55.67' (Free Discharge) t2=Broad-Crested Rectangular Weir ( Controls 0.00 cis) Primary OutFlow Max=0.13 cfs @ 12.22 hrs HW=55.99' (Free Discharge) t1=Culvert (Inlet Controls 0.13 cfs @ 1.5 fps) Pond 2:12" RCP Inflow Area = 3.130 ac, Inflow Depth > 1.21" for 1 -yr event Inflow = 2.54 cfs @ 12.43 hrs, Volume= 0.317 of Outflow = 2.54 cfs @ 12.43 hrs, Volume= 0.317 af, Atten= 0%, Lag= 0.0 min Primary = 2.54 cfs @ 12.43 hrs, Volume= 0.317 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 41.08'@ 12.43 hrs Flood Elev= 48.63' Plug -Flow detention time= (not calculated: outflow precedes inflow) Center -of -Mass det. time= 0.0 min ( 853.8 - 853.8 ) _Device Routing Invert Outlet Devices #1 Primary 40.13' 12.0" x 59.0' long Culvert RCP, square edge headwall, Ke= 0.500 Outlet Invert= 39.35' S=0.0132? Cc= 0.900 n= 0.012 Concrete pipe, finished Primary OutFlow Max=2.55 cfs @ 12.43 hrs HW=41.08' (Free Discharge) t-1 =Culvert (Inlet Controls 2.55 cfs @ 3.3 fps) Pond 3:12" RCP Inflow Area = 3.240 ac, Inflow Depth > 1.22" for 1 -yr event Inflow = 2.57 cfs @ 12.40 hrs, Volume= 0.331 of Outflow = 2.57 cfs @ 12.40 hrs, Volume= 0.331 af, Atten= 0%, Lag= 0.0 min Primary = 2.57 cfs @ 12.40 hrs, Volume= 0.331 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 40.31'@ 12.40 hrs Flood Elev= 48.65' Plug -Flow detention time= 0.0 min calculated for 0.331 of (100% of inflow) Center -of -Mass det. time= (not calculated: outflow precedes inflow) Device Routing Invert Outlet Devices #1 Primary 39.35' 12.0" x 100.0' long Culvert RCP, square edge headwall, Ke= 0.500 Outlet Invert= 38.20' S= 0.0115 'f Cc= 0.900 n=0.012 Concrete pipe, finished Primary OutFlow Max=2.58 cfs @ 12.40 hrs HW=40.31' (Free Discharge) t1=Culvert (Inlet Controls 2.58 cfs @ 3.3 fps) Runoff Calculations - Filtration Prepared by Larson Engineering HvdroCAD® 7.10 s/n 001935 n 2005 F Type 11 24 -hr 1 -yr Rainfall=2.40" Page 6 Pond 4:12" Inflow Area = 3.444 ac, Inflow Depth > 1.21" for 1 -yr event Inflow = 2.61 cfs @ 12.40 hrs, Volume= 0.348 of Outflow = 2.61 cfs @ 12.40 hrs, Volume= 0.348 af, Atten= 0%, Lag= 0.0 min Primary = 2.61 cfs @ 12.40 hrs, Volume= 0.348 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 39.85'@ 12.40 hrs Flood Elev= 44.42' Plug -Flow detention time= (not calculated: outflow precedes inflow) Center -of -Mass det. time= (not calculated: outflow precedes inflow) Device Routing Invert Outlet Devices #1 Primary 38.20' 12.0" x 108.0' long Culvert RCP, square edge headwall, Ke= 0.500 Outlet Invert= 38.10' S= 0.0009'P Cc= 0.900 n= 0.012 Concrete pipe, finished #2 Primary 44.42' 20.0' long x 5.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=2.61 cfs @ 12.40 hrs HW=39.85' (Free Discharge) t1=Culvert (Barrel Controls 2.61 cfs @ 3.3 fps) 2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Pond 5: 12" Inflow Area = 0.019 ac, Inflow Depth > 2.17" for 1 -yr event Inflow = 0.08 cfs @ 11.90 hrs, Volume= 0.003 of Outflow = 0.08 cfs @ 11.90 hrs, Volume= 0.003 af, Primary = 0.08 cfs @ 11.90 hrs, Volume= 0.003 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 37.92'@ 11.90 hrs Flood Elev= 41.21' Plug -Flow detention time= (not calculated: outflow precedes inflow) Center -of -Mass det. time= (not calculated: outflow precedes inflow) Atten= 0%, Lag= 0.0 min Device Routing Invert Outlet Devices #1 Primary 37.75' 12.0" x 56.0' long Culvert RCP, square edge headwall, Ke= 0.500 Outlet Invert= 37.55' S= 0.0036T Cc= 0.900 n=0.012 Concrete pipe, finished Primary OutFlow Max=0.07 cfs @ 11.90 hrs HW=37.91' (Free Discharge) t1=Culvert (Barrel Controls 0.07 cfs @ 1.3 fps) Runoff Calculations - Filtration Prepared by Larson Engineering Type /124 -hr 1 -yr Rainfall=2.40" Page 7 Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 38.42'@ 12.39 hrs Flood Elev= 42.46' Plug -Flow detention time= 0.0 min calculated for 0.371 of (100% of inflow) Center -of -Mass det. time= 0.0 min ( 850.3 - 850.3 ) Device Routing Invert Outlet Devices #1 Primary 37.55' 18.0" x 72.0' long Culvert CPP, square edge headwall, Ke= 0.500 Outlet Invert= 37.29' S= 0.00367 Cc= 0.900 n= 0.010 PVC, smooth interior Primary OutFlow Max=2.66 cfs @ 12.39 hrs HW=38.42' (Free Discharge) t1=Culvert (Barrel Controls 2.66 cfs @ 3.6 fps) Invert Avail.Storage Storage Pond 6:18" PVC Inflow Area = 3.728 ac, Inflow Depth > 1.19" for 1 -yr event Inflow = 2.67 cfs @ 12.39 hrs, Volume= 0.371 of Outflow = 2.67 cfs @ 12.39 hrs, Volume= 0.371 af, Atten= 0%, Lag= 0.0 min Primary = 2.67 cfs @ 12.39 hrs, Volume= 0.371 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 38.42'@ 12.39 hrs Flood Elev= 42.46' Plug -Flow detention time= 0.0 min calculated for 0.371 of (100% of inflow) Center -of -Mass det. time= 0.0 min ( 850.3 - 850.3 ) Device Routing Invert Outlet Devices #1 Primary 37.55' 18.0" x 72.0' long Culvert CPP, square edge headwall, Ke= 0.500 Outlet Invert= 37.29' S= 0.00367 Cc= 0.900 n= 0.010 PVC, smooth interior Primary OutFlow Max=2.66 cfs @ 12.39 hrs HW=38.42' (Free Discharge) t1=Culvert (Barrel Controls 2.66 cfs @ 3.6 fps) Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 36.75' @ 13.58 hrs Surf.Area= 7,612 sf Storage= 11,211 cf Plug -Flow detention time= 246.3 min calculated for 0.415 of (82% of inflow) Center -of -Mass det. time= 169.7 min ( 1,018.9 - 849.2 ) Volume Invert Avail.Storage Storage Pond 7: Filtration Basin Inflow Area = 5.405 ac, Inflow Depth > 1.13" for 1 -yr event Inflow = 4.13 cfs @ 12.02 hrs, Volume= 0.507 of Outflow = 0.63 cfs @ 13.58 hrs, Volume= 0.415 af, Atten= 85%, Lag= 94.2 min Primary = 0.63 cfs @ 13.58 hrs, Volume= 0.415 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 36.75' @ 13.58 hrs Surf.Area= 7,612 sf Storage= 11,211 cf Plug -Flow detention time= 246.3 min calculated for 0.415 of (82% of inflow) Center -of -Mass det. time= 169.7 min ( 1,018.9 - 849.2 ) Volume Invert Avail.Storage Storage Description #1 35.00' 58,556 cf Custom Stage Data (Pyramidal) Listed below (Recalc) Elevation Surf.Area Inc -Store Cum.Store Wet.Area (feet) (sq -ft) (cubic -feet) (cubic -feet) (sq -ft) 35.00 5,350 0 0 5,350 36.00 6,500 5,916 5,916 6,540 37.00 8,000 7,237 13,153 8,078 38.00 9,550 8,764 21,916 9,673 39.00 11,200 10,364 32,280 11,373 40.00 13,150 12,162 44,442 13,372 41.00 15,100 14,114 58,556 15,379 Device Routing Invert Outlet Devices #1 Primary 33.00' 8.0" x 80.0' long Culvert CPP, square edge headwall, Ke= 0.500 Outlet Invert= 23.00' S= 0.1250T Cc= 0.900 n= 0.010 PVC, smooth interior #2 Device 1 34.00' 4.0" x 88.0' long Culvert X 3.00 Runoff Calculations - Filtration Prepared by Larson Engineering Type// 24 -hr 1 -yr Rainfall=2.40" Page 8 CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 33.00' S= 0.0114'/' Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior #3 Device 2 35.00' 12.000 in/hr Exfiltration over Surface area above invert Excluded Surface area = 5,350 sf #4 Device 1 37.00' 24.0" Vert Orifice/Grate C= 0.600 Primary OuTlow Max=0.63 cfs @ 13.58 hrs HW=36.75' (Free Discharge) t-1=Culvert (Passes 0.63 cfs of 3.11 cfs potential flow) T-2=Culvert (Passes 0.63 cfs of 0.71 cfs potential flow) L3=Exfiltration (EAltration Controls 0.63 cfs) 4=Orifice/Grate ( Controls 0.00 cfs) Runoff Calculations - Filtration Prepared by Larson Engineering HvdroCAD® 7.10 s/n 001935 © 2005 E Subcatchment A: Type// 24 -hr 10 -yr Rainfall=4.20" Page 9 Runoff = 0.48 cfs @ 12.19 hrs, Volume= 0.041 af, Depth> 1.73" Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 10 -yr Rainfall=4.20" Area (ac) CN Description 0.286 74 >75% Grass cover, Good, HSG C Tc Length Slope Velocity Capacity Description min (feet) (ft/ft) (ft/sec) (cfs) 25.0 220 0.0110 0.1 Sheet Flow, Grass: Short n=0.150 P2=2.80" Subcatchment B: Runoff = 5.53 cfs @ 12.40 hrs, Volume= 0.684 af, Depth> 2.89" Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 10 -yr Rainfall=4.20" Area (ac) CN Description 1.170 74 >75% Grass cover, Good, HSG C 1.674 98 Impervious 2.844 88 Weighted Average Tc Length Slope Velocity Capacity Description 38.0 250 0.0050 0.1 Sheet Flow, Grass: Short n=0.150 P2=2.80" 3.0 50 0.1100 0.3 Sheet Flow, Grass: Short n=0.150 P2=2.80" 2.9 350 0.0100 2.0 Shallow Concentrated Flow, Paved Kv= 20.3 fos 43.9 650 Total Subcatchment C: Runoff = 0.64 cfs @ 11.94 hrs, Volume= 0.029 af, Depth> 3.21" Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 10 -yr Rainfall=4.20" Area (ac) CN Description 0.032 74 >75% Grass cover, Good, HSG C 0.078 98 Impervious 0.110 91 Weighted Average Runoff Calculations - Filtration Prepared by Larson Engineering Tc Length Slope iin) (feet) (ft/ft) 2.6 25 0.0400 0.9 80 0.0290 3.5 105 Total Type// 24 -hr 10 -yr Rainfall=4.20" Page 10 Description 0.2 Sheet Flow, Grass: Short n=0.150 P2=2.80" 1.4 Sheet Flow, Smooth surfaces n=0.011 P2=2 Subcatchment D: Runoff = 0.90 cfs @ 11.98 hrs, Volume= 0.043 af, Depth> 2.54" Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 10 -yr Rainfall=4.20" Area (ac) CN Description 0.115 74 >75% Grass cover, Good, HSG C 0.089 98 Impervious 0.204 84 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (fUft) (ft/sec) (cfs) 6.2 85 0.0530 0.2 Sheet Flow, Grass: Short n= 0.150 P2= 2.80" 0.3 25 0.0600 1.5 Sheet Flow, Smooth surfaces n=0.011 P2=2.80" 6.5 110 Total Subcatchment E: Runoff = 0.13 cfs @ 11.90 hrs, Volume= 0.006 af, Depth> 3.96" Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 10 -yr Rainfall=4.20" Area (ac) CN Description 0.019 98 Impervious Subcatchment F: Runoff = 1.08 cfs @ 11.97 hrs, Volume= 0.051 af, Depth> 2.29" Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 10 -yr Rainfall=4.20" _ Area (ac) CN Description 0.192 74 >75% Grass cover, Good, HSG C 0.073 98 Impervious 0.265 81 Weighted Average Runoff Calculations - Filtration Prepared by Larson Engineering Tc Length Software Description 10961 Type// 24 -hr 10 -yr Rainfall=4.20" Page 11 4.6 70 0.0780 0.3 Sheet Flow, Grass: Short n= 0.150 P2= 2.80" 1.3 110 0.0230 1.4 Sheet Flow, Smooth surfaces n=0.011 P2=2.80" 5.9 180 Total Subcatchment G: Runoff = 6.23 cfs @ 12.02 hrs, Volume= 0.343 af, Depth> 2.45" Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 10 -yr Rainfall=4.20" Area (ac) CN Description 1.064 74 >75% Grass cover, Good, HSG C 0.613 98 Impervious 1.677 83 Weighted Average Tc Length Slope iin) (feet) (ft/ft) 1.1 60 0.0100 5.8 48 0.0200 3.1 64 0.1700 0.4 25 0.0200 Description 0.9 Sheet Flow, Smooth surfaces n=0.011 P2=2.80" 0.1 Sheet Flow, Grass: Short n=0.150 P2=2.80" 0.3 Sheet Flow, Grass: Short n= 0.150 P2= 2.80" 1.0 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 10.4 197 Total Pond 1: 4" DT Inflow Area = 0.286 ac, Inflow Depth > 1.73" for 10 -yr event Inflow = 0.48 cfs @ 12.19 hrs, Volume= 0.041 of Outflow = 0.48 cfs @ 12.19 hrs, Volume= 0.041 af, Atten= 0%, Lag= 0.0 min Discarded = 0.24 cfs @ 12.19 hrs, Volume= 0.005 of Primary = 0.24 cfs @ 12.19 hrs, Volume= 0.036 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 56.78'@ 12.19 hrs Plug -Flow detention time= (not calculated: outflow precedes inflow) Center -of -Mass det. time= (not calculated: outflow precedes inflow) Device Routing Invert Outlet Devices #1 Primary 55.67' 4.0" x 425.0' long Culvert CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 40.13' S= 0.03667 Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior #2 Discarded 56.77' 50.0' long x 20.0' breadth Broad -Crested Rectangular Weir Runoff Calculations - Filtration Type// 24 -hr 10 -yr Rainfall=4.20" Prepared by Larson Engineering Page 12 HydroCADO 7.10 s/n 001935 0 2005 HydroCAD Software Solutions LLC 12/19/2005 Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Discarded OutFlow Max=0.23 cfs @ 12.19 hrs HW=56.78' (Free Discharge) t2=13road-Crested Rectangular Weir (Weir Controls 0.23 cfs @ 0.3 fps) Primary OutFlow Max=0.24 cfs @ 12.19 hrs HW=56.78' (Free Discharge) t1=Culvert (Barrel Controls 0.24 cfs @ 2.8 fps) Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 42.96'@ 12.40 hrs Flood Elev= 48.63' Plug -Flow detention time= (not calculated: outflow precedes inflow) Center -of -Mass det. time= (not calculated: outflow precedes inflow) Atten= 0%, Lag= 0.0 min Device Routing Invert Outlet Devices #1 Primary 40.13' 12.0" x 59.0' long Culvert RCP, square edge headwall, Ke= 0.500 Outlet Invert= 39.35' S=0.01327 Cc= 0.900 n= 0.012 Concrete pipe, finished Primary OutFlow Max=5.77 cfs @ 12.40 hrs HW=42.96' (Free Discharge) t1=Culvert (Inlet Controls 5.77 cfs @ 7.3 fps) Pond 2:12" RCP Inflow Area = 3.130 ac, Inflow Depth > 2.76" for 10 -yr event Inflow = 5.77 cfs @ 12.40 hrs, Volume= 0.720 of Outflow = 5.77 cfs @ 12.40 hrs, Volume= 0.720 af, Primary = 5.77 cfs @ 12.40 hrs, Volume= 0.720 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 42.96'@ 12.40 hrs Flood Elev= 48.63' Plug -Flow detention time= (not calculated: outflow precedes inflow) Center -of -Mass det. time= (not calculated: outflow precedes inflow) Atten= 0%, Lag= 0.0 min Device Routing Invert Outlet Devices #1 Primary 40.13' 12.0" x 59.0' long Culvert RCP, square edge headwall, Ke= 0.500 Outlet Invert= 39.35' S=0.01327 Cc= 0.900 n= 0.012 Concrete pipe, finished Primary OutFlow Max=5.77 cfs @ 12.40 hrs HW=42.96' (Free Discharge) t1=Culvert (Inlet Controls 5.77 cfs @ 7.3 fps) Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 42.76' @ 12.40 hrs Flood Elev= 48.65' Plug -Flow detention time= (not calculated: outflow precedes inflow) Center -of -Mass det. time= 0.0 min ( 830.3 - 830.3 ) Atten= 0%, Lag= 0.0 min Device Routing Invert Outlet Devices #1 Primary 39.35' 12.0" x 100.0' long Culvert RCP, square edge headwall, Ke= 0.500 Outlet Invert= 38.20' S= 0.0115'P Cc= 0.900 n= 0.012 Concrete pipe, finished Primary OutFlow Max=5.82 cfs @ 12.40 hrs HW=42.76' (Free Discharge) t1=Culvert (Barrel Controls 5.82 cfs @ 7.4 fps) Pond 3:12" RCP Inflow Area = 3.240 ac, Inflow Depth > 2.78" for 10 -yr event Inflow = 5.82 cfs @ 12.40 hrs, Volume= 0.749 of Outflow = 5.82 cfs @ 12.40 hrs, Volume= 0.749 af, Primary = 5.82 cfs @ 12.40 hrs, Volume= 0.749 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 42.76' @ 12.40 hrs Flood Elev= 48.65' Plug -Flow detention time= (not calculated: outflow precedes inflow) Center -of -Mass det. time= 0.0 min ( 830.3 - 830.3 ) Atten= 0%, Lag= 0.0 min Device Routing Invert Outlet Devices #1 Primary 39.35' 12.0" x 100.0' long Culvert RCP, square edge headwall, Ke= 0.500 Outlet Invert= 38.20' S= 0.0115'P Cc= 0.900 n= 0.012 Concrete pipe, finished Primary OutFlow Max=5.82 cfs @ 12.40 hrs HW=42.76' (Free Discharge) t1=Culvert (Barrel Controls 5.82 cfs @ 7.4 fps) Runoff Calculations - Filtration Prepared by Larson Engineering HydroCAD® 7.10 s/n 001935 © 2005 HydroCAD Software Solutions LLC Pond 4: 12" Inflow Area = 3.444 ac, Inflow Depth > 2.76" for 10 -yr event Inflow = 5.92 cfs @ 12.39 hrs, Volume= 0.793 of Outflow = 5.92 cfs @ 12.39 hrs, Volume= 0.793 af, Primary = 5.92 cfs @ 12.39 hrs, Volume= 0.793 of Type// 24 -hr 10 -yr Rainfall=4.20" Page 13 Atten= 0%, Lag= 0.0 min Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 42.97'@ 12.39 hrs Flood Elev= 44.42' Plug -Flow detention time= 0.0 min calculated for 0.793 of (100% of inflow) Center -of -Mass det. time= 0.0 min ( 829.5 - 829.5 ) Device Routing Invert Outlet Devices #1 Primary 38.20' 12.0" x 108.0' long Culvert RCP, square edge headwall, Ke= 0.500 Outlet Invert= 38.10' S= 0.0009'P Cc= 0.900 n=0.012 Concrete pipe, finished #2 Primary 44.42' 20.0' long x 5.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=5.92 cfs @ 12.39 hrs HW=42.97' (Free Discharge) 1=Culvert (Barrel Controls 5.92 cfs @ 7.5 fps) L 2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Pond 5: 12" Inflow Area = 0.019 ac, Inflow Depth > 3.96" for 10 -yr event Inflow = 0.13 cfs @ 11.90 hrs, Volume= 0.006 of Outflow = 0.13 cfs @ 11.90 hrs, Volume= 0.006 af, Atten= 0%, Lag= 0.0 min Primary = 0.13 cfs @ 11.90 hrs, Volume= 0.006 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 37.97'@ 11.90 hrs Flood Elev= 41.21' Plug -Flow detention time= 0.0 min calculated for 0.006 of (100% of inflow) Center -of -Mass det. time= (not calculated: outflow precedes inflow) Device Routing Invert Outlet Devices #1 Primary 37.75' 12.0" x 56.0' long Culvert RCP, square edge headwall, Ke= 0.500 Outlet Invert= 37.55' S= 0.0036T Cc= 0.900 n= 0.012 Concrete pipe, finished Primary OutFlow Max=0.13 cfs @ 11.90 hrs HW=37.9T (Free Discharge) t1=Culvert (Barrel Controls 0.13 cfs @ 1.6 fps) Runoff Calculations - Filtration Prepared by Larson Engineering Pond 6:18" PVC Inflow Area = 3.728 ac, Inflow Depth > 2.73" for 10 -yr event Inflow = 6.04 cfs @ 12.39 hrs, Volume= 0.849 of Outflow = 6.04 cfs @ 12.39 hrs, Volume= 0.849 af, Primary = 6.04 cfs @ 12.39 hrs, Volume= 0.849 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 39.01'@ 12.39 hrs Flood Elev= 42.46' Plug -Flow detention time= (not calculated: outflow precedes inflow) Center -of -Mass det. time= 0.0 min ( 828.4 - 828.4) Type// 24 -hr 10 -yr Rainfall=4.20" Page 14 Atten= 0%, Lag= 0.0 min Device Routing Invert Outlet Devices #1 Primary 37.55' 18.0" x 72.0' long Culvert CPP, square edge headwall, Ke= 0.500 Outlet Invert= 37.29' S= 0.0036 T Cc= 0.900 n= 0.010 PVC, smooth interior Primary OutFlow Max=6.04 cfs @ 12.39 hrs HW=39.01' (Free Discharge) t1=Culvert (Barrel Controls 6.04 cfs @ 4.4 fps) Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 37.94'@ 12.83 hrs Surf.Area= 9,456 sf Storage= 21,365 cf Plug -Flow detention time= 170.9 min calculated for 1.033 of (87% of inflow) Center -of -Mass det. time= 110.1 min ( 936.1 - 826.0 ) Volume Invert Avail.Storage Storage Pond 7: Filtration Basin Inflow Area = 5.405 ac, Inflow Depth > 2.65" for 10 -yr event Inflow = 10.40 cfs @ 12.01 hrs, Volume= 1.192 of Outflow = 3.61 cfs @ 12.83 hrs, Volume= 1.034 af, Atten= 65%, Lag= 49.0 min Primary = 3.61 cfs @ 12.83 hrs, Volume= 1.034 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 37.94'@ 12.83 hrs Surf.Area= 9,456 sf Storage= 21,365 cf Plug -Flow detention time= 170.9 min calculated for 1.033 of (87% of inflow) Center -of -Mass det. time= 110.1 min ( 936.1 - 826.0 ) Volume Invert Avail.Storage Storage Description #1 35.00' 58,556 cf Custom Stage Data (Pyramidal) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store Wet.Area (feet) (sq -ft) (cubic -feet) (cubic -feet) (sq -ft) 35.00 5,350 0 0 5,350 36.00 6,500 5,916 5,916 6,540 37.00 8,000 7,237 13,153 8,078 38.00 9,550 8,764 21,916 9,673 39.00 11,200 10,364 32,280 11,373 40.00 13,150 12,162 44,442 13,372 41.00 15,100 14,114 58,556 15,379 Device Routing Invert Outlet Devices #1 Primary 33.00' 8.0" x 80.0' long Culvert CPP, square edge headwall, Ke= 0.500 Outlet Invert= 23.00' S= 0.1250 'P Cc= 0.900 n= 0.010 PVC, smooth interior #2 Device 1 34.00' 4.0" x 88.0' long Culvert X 3.00 Runoff Calculations - Filtration Prepared by Larson Engineering Type 1124 -hr 10 -yr Rainfall=4.20" Page 15 CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 33.00' S=0 -0114T Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior #3 Device 2 35.00' 12.000 in/hr Exfiltration over Surface area above invert Excluded Surface area = 5,350 sf #4 Device 1 37.00' 24.0" Vert Orifice/Grate C= 0.600 Primary OutFlow Max=3.61 cfs @ 12.83 hrs HW=37.94' (Free Discharge) t1=Culvert (Inlet Controls 3.61 cfs @ 10.3 fps) �2--Culvert (Passes < 0.82 cfs potential flow) t3=Exfiltration (Passes < 1.14 cfs potential flow) 4=Orifice/Grate (Passes < 4.81 cfs potential flow) Runoff Calculations - Filtration Prepared by Larson Engineering Subcatchment A: Type 1124 -hr 100 -yr Rainfall=6.00" Page 16 Runoff = 0.89 cfs @ 12.19 hrs, Volume= 0.075 af, Depth> 3.16" Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 100 -yr Rainfall=6.00" Area (ac) CN Description 0.286 74 >75% Grass cover, Good, HSG C Tc Length Slope min) (feet) (ft/ft) 25.0 220 0.0110 Description 0.1 Sheet Flow, Grass: Short n=0.150 P2=2.80" Subcatchment B: Runoff = 8.67 cfs @ 12.39 hrs, Volume= 1.086 af, Depth> 4.58" Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 100 -yr Rainfall=6.00" Area (ac) CN Description 1.170 74 >75% Grass cover, Good, HSG C 1.674 98 Impervious 2.844 88 Weighted Average Tc Length Slope Velocity Capacity Description 38.0 250 0.0050 0.1 Sheet Flow, Grass: Short n= 0.150 P2= 2.80" 3.0 50 0.1100 0.3 Sheet Flow, Grass: Short n=0.150 P2=2.80" 2.9 350 0.0100 2.0 Shallow Concentrated Flow, Paved Kv= 20.3 fps 43.9 650 Total Subcatchment C: Runoff = 0.96 cfs @ 11.94 hrs, Volume= 0.045 af, Depth> 4.95' Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 100 -yr Rainfall=6.00" Area (ac) CN Description 0.032 74 >75% Grass cover, Good, HSG C 0.078 98 Impervious 0.110 91 Weighted Average Runoff Calculations - Filtration Type Il 24 -hr 100 -yr Rainfall=6.00" Prepared by Larson Engineering Page 17 HydroCAD® 7.10 s/n 001935 © 2005 HydroCAD Software Solutions LLC 12/19/2005 Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (f /sec) (cfs) 2.6 25 0.0400 0.2 Sheet Flow, Grass: Short n=0.150 P2=2.80" 0.9 80 0.0290 1.4 Sheet Flow, Smooth surfaces n=0.011 P2=2.80" 3.5 105 Total Subcatchment D: Runoff = 1.44 cfs @ 11.98 hrs, Volume= 0.071 af, Depth> 4.19" Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 100 -yr Rainfall=6.00" Area (ac) CN Description 0.115 74 >75% Grass cover, Good, HSG C _ 0.089 98 Impervious 0.204 84 Weighted Average Tc Length Slope Velocity Capacity Description 6.2 85 0.0530 0.2 Sheet Flow, Grass: Short n=0.150 P2=2.80" 0.3 25 0.0600 1.5 Sheet Flow, Smooth surfaces n= 0.011 P2= 2.80" 6.5 110 Total Subcatchment E: Runoff = 0.19 cfs @ 11.90 hrs, Volume= 0.009 af, Depth> 5.76" Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 100 -yr Rainfall=6.00" Area (ac) CN Description 0.019 98 Impervious Subcatchment F: Runoff = 1.80 cfs @ 11.97 hrs, Volume= 0.085 af, Depth> 3.88" Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 100 -yr Rainfall=6.00" Area (ac) CN Description 0.192 74 >75% Grass cover, Good, HSG C _ 0.073 98 Impervious 0.265 81 Weighted Average Runoff Calculations - Filtration Prepared by Larson Engineering HydroCAD® 7.10 s/n 001935 © 2005 h Tc Length Slope Velocity iin) (feet) (ft/ft) (fUsec) 4.6 70 0.0780 0.3 1.3 110 0.0230 1.4 5.9 180 Total Type 11 24 -hr 100 -yr Rainfall=6.00" Page 18 Capacity Description Sheet Flow, Grass: Short n=0.150 P2=2.80" Sheet Flow, Subcatchment G: Runoff = 10.17 cfs @ 12.02 hrs, Volume= 0.570 af, Depth> 4.08" Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 100 -yr Rainfall=6.00" Area (ac) CN Description 1.064 74 >75% Grass cover, Good, HSG C _ 0.613 98 Impervious 1.677 83 Weighted Average Tc Length Slope Velocity iin) (feet) (ftht) (ft/sec) 1.1 60 0.0100 0.9 Description Sheet Flow, Smooth surfaces n=0.011 P2=2.80" 5.8 48 0.0200 0.1 Sheet Flow, Grass: Short n=0.150 P2=2.80" 3.1 64 0.1700 0.3 Sheet Flow, Grass: Short n=0.150 P2=2.80" 0.4 25 0.0200 1.0 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 10.4 197 Total Inflow Area = 0.286 ac, Inflow = 0.89 cfs @ Outflow = 0.89 cfs @ Discarded = 0.65 cfs @ Primary = 0.24 cfs @ Pond 1: 4" DT Inflow Depth > 3.16" for 100 -yr event 12.19 hrs, Volume= 0.075 of 12.19 hrs, Volume= 0.075 af, Atten= 0%, Lag= 0.0 min 12.19 hrs, Volume= 0.020 of 12.19 hrs, Volume= 0.056 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 56.80'@ 12.19 hrs Plug -Flow detention time= (not calculated: outflow precedes inflow) Center -of -Mass det. time= 0.0 min ( 839.2 - 839.2) Device Routing Invert Outlet Devices #1 Primary 55.67' 4.0" x 425.0' long Culvert CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 40.13' S=0.0366? Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior #2 Discarded 56.77' 50.0' long x 20.0' breadth Broad -Crested Rectangular Weir Runoff Calculations - Filtration Prepared by Larson Engineering HydroCAD@ 7.10 s/n 001935 © 2005 H Type// 24 -hr 100 -yr Rainfall=6.00" Page 19 Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Discarded OutFlow Max=0.64 cfs @ 12.19 hrs HW=56.80' (Free Discharge) t2=Broad-Crested Rectangular Weir (Weir Controls 0.64 cfs @ 0.5 fps) Primary OutFlow Max=0.24 cfs @ 12.19 hrs HW=56.80' (Free Discharge) t1=Culvert (Barrel Controls 0.24 cfs @ 2.8 fps) Pond 2:12" RCP Inflow Area = 3.130 ac, Inflow Depth > 4.38" for 100 -yr event Inflow = 8.91 cfs @ 12.39 hrs, Volume= 1.142 of Outflow = 8.91 cfs @ 12.39 hrs, Volume= 1.142 af, Atten= 0%, Lag= 0.0 min Primary = 8.91 cfs @ 12.39 hrs, Volume= 1.142 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 46.50'@ 12.39 hrs Flood Elev= 48.63' Plug -Flow detention time= (not calculated: outflow precedes inflow) Center -of -Mass det. time= (not calculated: outflow precedes inflow) Device Routing Invert Outlet Devices #1 Primary 40.13' 12.0" x 59.0' long Culvert RCP, square edge headwall, Ke= 0.500 Outlet Invert= 39.35' S= 0.0132 'f Cc= 0.900 n=0.012 Concrete pipe, finished Primary OutFlow Max=8.90 cfs @ 12.39 hrs HW=46.49' (Free Discharge) L1=Culvert (Barrel Controls 8.90 cfs @ 11.3 fps) Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 47.69'@ 12.39 hrs Flood Elev= 48.65' Plug -Flow detention time= 0.0 min calculated for 1.187 of (100% of inflow) Center -of -Mass det. time= (not calculated: outflow precedes inflow) Device Routing Invert Outlet Devices #1 Primary 39.35' 12.0" x 100.0' long Culvert RCP, square edge headwall, Ke= 0.500 Outlet Invert= 38.20' S= 0.0115'f Cc= 0.900 n=0.012 Concrete pipe, finished Primary OutFlow Max=8.98 cfs @ 12.39 hrs HW=47.68' (Free Discharge) t1 --Culvert (Barrel Controls 8.98 cfs @ 11.4 fps) Pond 3: 12" RCP Inflow Area = 3.240 ac, Inflow Depth > 4.40" for 100 -yr event Inflow = 8.99 cfs @ 12.39 hrs, Volume= 1.187 of Outflow = 8.99 cfs @ 12.39 hrs, Volume= 1.187 af, Atten= 0%, Lag= 0.0 min Primary = 8.99 cfs @ 12.39 hrs, Volume= 1.187 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 47.69'@ 12.39 hrs Flood Elev= 48.65' Plug -Flow detention time= 0.0 min calculated for 1.187 of (100% of inflow) Center -of -Mass det. time= (not calculated: outflow precedes inflow) Device Routing Invert Outlet Devices #1 Primary 39.35' 12.0" x 100.0' long Culvert RCP, square edge headwall, Ke= 0.500 Outlet Invert= 38.20' S= 0.0115'f Cc= 0.900 n=0.012 Concrete pipe, finished Primary OutFlow Max=8.98 cfs @ 12.39 hrs HW=47.68' (Free Discharge) t1 --Culvert (Barrel Controls 8.98 cfs @ 11.4 fps) Runoff Calculations - Filtration Type /124 -hr 100 -yr Rainfall=6.00" Prepared by Larson Engineering Page 20 HydroCAD® 7.10 s/n 001935 © 2005 HydroCAD Software Solutions LLC 12/19/2005 Pond 4:12" Inflow Area = 3.444 ac, Inflow Depth > 4.38" for 100 -yr event Inflow = 9.13 cis @ 12.39 hrs, Volume= 1.258 of Outflow = 9.13 cfs @ 12.39 hrs, Volume= 1.258 af, Atten= 0%, Lag= 0.0 min Primary = 9.13 cfs @ 12.39 hrs, Volume= 1.258 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 44.55'@ 12.39 hrs Flood Elev= 44.42' Plug -Flow detention time= (not calculated: outflow precedes inflow) Center -of -Mass det. time= (not calculated: outflow precedes inflow) Device Routing Invert Outlet Devices #1 Primary 38.20' 12.0" x 108.0' long Culvert RCP, square edge headwall, Ke= 0.500 Outlet Invert= 38.10' S= 0.0009 'P Cc= 0.900 n= 0.012 Concrete pipe, finished #2 Primary 44.42' 20.0' long x 5.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=9.13 cfs @ 12.39 hrs HW=44.55' (Free Discharge) 1=Culvert (Barrel Controls 7.02 cfs @ 8.9 fps) L 2=Broad-Crested Rectangular Weir (Weir Controls 2.10 cfs @ 0.8 fps) Pond 5: 12" Inflow Area = 0.019 ac, Inflow Depth > 5.76" for 100 -yr event Inflow = 0.19 cfs @ 11.90 hrs, Volume= 0.009 of Outflow = 0.19 cfs @ 11.90 hrs, Volume= 0.009 af, Atten= 0%, Lag= 0.0 min Primary = 0.19 cfs @ 11.90 hrs, Volume= 0.009 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 38.01'@ 11.90 hrs Flood Elev= 41.21' Plug -Flow detention time= 0.0 min calculated for 0.009 of (100% of inflow) Center -of -Mass det. time= (not calculated: outflow precedes inflow) Device Routing Invert Outlet Devices #1 Primary 37.75' 12.0" x 56.0' long Culvert RCP, square edge headwall, Ke= 0.500 Outlet Invert= 37.55' S=0.00367 Cc= 0.900 n=0.012 Concrete pipe, finished Primary OutFlow Max=0.19 cfs @ 11.90 hrs HW=38.01' (Free Discharge) t 1=Culvert (Barrel Controls 0.19 cfs @ 1.8 fps) Runoff Calculations - Filtration Prepared by Larson Engineering H droCADO 7.10 s/n 001935 0 2005 HvdroCAD Software Solutions LLC Type// 24 -hr 100 -yr Rainfall=6.00" Page 21 Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 39.78'@ 12.39 hrs Flood Elev= 42.46' Plug -Flow detention time= (not calculated: outflow precedes inflow) Center -of -Mass det. time= (not calculated: outflow precedes inflow) Atten= 0%, Lag= 0.0 min Device Routing Invert Outlet Devices #1 Primary 37.55' 18.0" x 72.0' long Culvert CPP, square edge headwall, Ke= 0.500 Outlet Invert= 37.29' S= 0.0036'P Cc= 0.900 n= 0.010 PVC. smooth interior Primary OutFlow Max=9.33 cfs @ 12.39 hrs HW=39.78' (Free Discharge) l 1=Culvert (Barrel Controls 9.33 cfs @ 5.3 fps) Pond 7: Filtration Basin Inflow Area = 5.405 ac, Pond 6:18" PVC Inflow Area = 3.728 ac, Inflow Depth > 4.36" for 100 -yr event Inflow = 9.33 cfs @ 12.39 hrs, Volume= 1.353 of Outflow = 9.33 cfs @ 12.39 hrs, Volume= 1.353 af, Primary = 9.33 cfs @ 12.39 hrs, Volume= 1.353 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 39.78'@ 12.39 hrs Flood Elev= 42.46' Plug -Flow detention time= (not calculated: outflow precedes inflow) Center -of -Mass det. time= (not calculated: outflow precedes inflow) Atten= 0%, Lag= 0.0 min Device Routing Invert Outlet Devices #1 Primary 37.55' 18.0" x 72.0' long Culvert CPP, square edge headwall, Ke= 0.500 Outlet Invert= 37.29' S= 0.0036'P Cc= 0.900 n= 0.010 PVC. smooth interior Primary OutFlow Max=9.33 cfs @ 12.39 hrs HW=39.78' (Free Discharge) l 1=Culvert (Barrel Controls 9.33 cfs @ 5.3 fps) Pond 7: Filtration Basin Inflow Area = 5.405 ac, Inflow Depth > 4.27" for 100 -yr event Inflow = 16.80 cfs @ 12.01 hrs, Volume= 1.924 of Outflow = 4.13 cfs @ 13.00 hrs, Volume= 1.714 af, Atten= 75%, Lag= 59.6 min Primary = 4.13 cfs @ 13.00 hrs, Volume= 1.714 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 39.36' @ 13.00 hrs Surf.Area= 11,886 sf Storage= 36,448 cf Plug -Flow detention time= 153.3 min calculated for 1.714 of (89% of inflow) Center -of -Mass det. time= 100.8 min ( 913.9 - 813.1 ) Volume Invert Avail.Storage Storaqe Description #1 35.00' 58,556 cf Custom Stage Data (Pyramidal) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store Wet.Area (feet) (sq -ft) (cubic -feet) (cubic -feet) (sq -ft) 35.00 5,350 0 0 5,350 36.00 6,500 5,916 5,916 6,540 37.00 8,000 7,237 13,153 8,078 38.00 9,550 8,764 21,916 9,673 39.00 11,200 10,364 32,280 11,373 40.00 13,150 12,162 44,442 13,372 41.00 15,100 14,114 58,556 15,379 Device Routing Invert Outlet Devices #1 Primary 33.00' 8.0" x 80.0' long Culvert CPP, square edge headwall, Ke= 0.500 Outlet Invert= 23.00' S= 0.1250 'P Cc= 0.900 n= 0.010 PVC, smooth interior #2 Device 1 34.00' 4.0" x 88.0' long Culvert X 3.00 Runoff Calculations - Filtration Prepared by Larson Engineerinq Type 1124 -hr 100 -yr Rainfall=6.00" Page 22 CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 33.00' S= 0.0114 'P Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior #3 Device 2 35.00' 12.000 in/hr Exfiltration over Surface area above invert Excluded Surface area = 5,350 sf #4 Device 1 37.00' 24.0" Vert Orifice/Grate C= 0.600 Primary OutFlow Max=4.13 cfs @ 13.00 hrs HW=39.36' (Free Discharge) t1=Culvert (Inlet Controls 4.13 cfs @ 11.8 fps) � 2=Culvert (Passes < 0.94 cfs potential flow) t3=Exfltration (Passes < 1.82 cfs potential flow) _:Orifice/Grate (Passes < 17.65 cfs potential flow) I _ _ — 1 �,. —._. of - !/ i � yy� \gym i I� s r �I 3MISDRAINAGE IMPROVENEHTS DRAINAGE AREA MAP Larson NINNETONKA MIDDLE SCHOOL WEST Ea.,, QnW.o'Mlnneaod INDEPENDENT SCHOOL DISTRICT 1@7S Bt21 e'icTINE BOULEVARD (% ! EXCELSIOR, MINNESOTA 55391 0 o y,aum� PROJECT: 2005 DRAINAGE IMPROVEMENTS ,. MINNECU144A. PUdLIC SCHISUrLS it27u MINNETONKA PUBLIC SCHOOLS INDEPENDENT SCHOOL DISTRICT 276 17000 LAKE STREET EXTENSION MINNETONKA, MINNESOTA 55345 VICINITY MAP T Title. Vicinity Map, Sheet Index, Contacts CO Topographic Survey C1 Grading and Erosion Control Plan C2 Utility Plan PROJECT CONTACTS Civil Engineer. Sum Michael A. Murphy, P.E. Daniel L. Thurmes, L.S. Lemon Engineering of Minnesota Cornerstone Land Surveying, Inc. 3524 Labors Road 200 East Chestnut Street White Beer Lake, MN 55110 Stillwater, MN 55082 Tel: 051.481.9120 Tel 651 275.8969 Fez: 651.481.9201 Fax: 651.275.8976 mmurphy@lamommn.com dit-cels®mcleoduse.net CITY OF CHANHASSEN RECEIVED IAN 0 5 2006 CHANHASSEN PLANNING DEPT SCANNI1110 Pn o X6 810 aeoao-0 2�OWZ 6�pJ4 NS�6e� zIll a0 Generous, Bob From: James Wisker Dwisker@minnehahacreek.org] Sent: Wednesday, January 18, 2006 3:02 PM To: Generous, Bob Subject: Minnetonka Middle School West Dear Robert, After reviewing plans for Minnetonka Middle School West it has been determined that no permit is necessary through the Watershed District. The District permits: Floodplain Dredging Shoreline Crossings Thank you for the opportunity to comment. James Wisker District Technician 952-471-0590 Extension: 206 Jwisker@minnehahacreek.org 1 PROJECT: 2005 DRAINAGE IMPROVEMENTS P.1.nnulunha. Ccdnrry Ch.O _ N51noy Ln 1. Iq MINNETONKA PUBLIC SCHOOLS 4276 MINNETONKA PUBLIC SCHOOLS INDEPENDENT SCHOOL DISTRICT 276 17000 LAKE STREET EXTENSION MINNETONKA, MINNESOTA 55345 VICINITY MAP INDEX OF DRAWINGS G:rGivin2005\12056054 - Minnetonka West\56054 T.dwit :1n S 1 hrunn00 Field Park hlary :. Lake 16 J� a� g gel 1 a— ,.:6� tim ktl >.IeloJy R,. R�o E I 5 G a 3 ��L fl n St Minnetonka Midd!e School West 6421 Hazeltine Boulevard Pneasan;; MGs Park , Ory Ln " 9 01 T Title, Vicinity Map, Sheet Index, Contacts CO Topographic Survey C1 Grading and Erosion Control Plan C2 Utility Plan 1� N Z O Q W H 5m,—Z° p m¢c1w a" N = z Z 2 ° ~ W Z � ILL I-- Z < Pneasan;; MGs Park , Ory Ln " 9 01 T Title, Vicinity Map, Sheet Index, Contacts CO Topographic Survey C1 Grading and Erosion Control Plan C2 Utility Plan PROJECT CONTACTS Civil Engineer: Michael A. Murphy, P.E. Larson Engineering of Minnesota 3524 Labore Road White Bear Lake, MN55110 Tel: 651.481.9120 Fax: 651.481.9201 mmurphy@larsommn.com Surveyor: Daniel L. Thurmes, L.S. Cornerstone Land Surveying, Inc. 200 East Chestnut Street Stillwater, MN 55082 Tel: 651.275.8969 Fax: 651.275.8976 dlt-csls@mcleodusa.net C1TM OF RECEIVED SSEIv JAN 0 5 2006 Z O Y W Q W F= o U Z 7 p o W p Z o IL ¢ N Z O Q W H 5m,—Z° ° m¢c1w z N = z Z 2 ° ~ W Z � ILL I-- Z < F --< a ¢ Z W 00 N (p F=WZZ WW a n N ¢ W F- ¢ K OW u WK W W U 7 a I- e Y O N W W m -I-NO ? WW U Z n LU W m W =0a:5 m o m r o O N S d C C SHEET 0 N W O N (p W YTWw O 1' O N �=Q d, J L 0 N CO M B ova J p N N _!W �a •�I W W W laaa F'W4tTaa W_jGM UQton wO�wQ > ,m T) D O U a m O aNJmw LU 2 j0LL, Z Wo VL U J C ZZN.W� �Z�o W N _ 00ZW W 04 U� NZWto CHANHASSEN PLANNING DEPT o 12056054 o S o SHEET W YTWw �=Q ALL EXISTING ITEMS AND CONDITIONS SHOULD BE VERIFIED BY THE CONTRACTOR BEFORE CONSTRUCTION. p U p v0 BENCHMARKS: ELEVATIONS BASED ON TOPOGRAPHIC SURVEY BY CLARK ENGINEERING DATED AUG. 14, 1996. THE RIM ELEVATION OF THE CATCH BASINS AS SHOWN ON THE SURVEY WERE USED AS BENCH MARKS. EXISTING LEGAL DESCRIPTION: PART OF THE SW 1/4 OF THE NW 1/4 OF SECTION 3, Tl 16, R23, CARVER COUNTY,MN Minnetonka Wes65W54 CO.dwg SURVEY NOTES: THE ORIENTATION OF THIS BEARING SYSTEM ISASSUMED FIELDWORK WAS PEFORMED MAY. 7, 2005 TOPOGRAPHIC FEATURES WERE SHOT TO THE BEST OF OUR ABILITIES DESPITE THICK FOLIAGE. A GOPHER STATE ONE CALL UTILITY DESIGN LOCATE WAS INITIATED ON THIS SITE. THE UTILITIES SHOWN HEREON WERE FIELD LOCATE PER VISIBLE STRUCTURE AND GOPHER STATE ONE CALL MARKINGS WHERE POSSIBLE. CITY AND UTILITY AS -BUILT PLANS WERE RELIED ON FOR OTHER INFORMATION. ADDITIONAL UTILITIES OF WHICH WE ARE UNAWARE MAY EXIST. 0 20 40 %7=m CALL BEFORE YOU DIG! Gopher State One Call TWIN CITY AREA: 651-454-0002 TOLL FREE: 1-800-252-1166 m Ian was prepared supervision, and Land Surveyor e of MINNESOTA. Daniel L. Thurmes Regis ration No: 25718 Date: -5-1-1 -05--- LEGEND: 05 LEGEND: . DENOTES FOUND 16. 0 1/2" IRON PIPE 0 DENOTES SET N 1/2" IRON PIPE C WELL v CATCH BASIN K HYDRANT *A WATER VALVES O SIGN O UTILITY POLE $ LIGHT POLE D TELE/ELEC BOX GAS VALVE —�— OVERHEAD WIRES 0 MANHOLE p CULVERT GAS METER .—r FENCE CURB CONCRETE 1FOOT CONTOUR INTERVAL ALL EXISTING ITEMS AND CONDITIONS SHOULD BE VERIFIED BY THE CONTRACTOR BEFORE CONSTRUCTION. C o m m- j C i N m m a W U N 5 N N N T m Z? gNNVE 00 Z t m 5 - `o � N} a t I 0 swo. N tq W L+ Z' Ic N OD Z uS + o 16. 0 N SHEET N wo Y C C �Ww C G o 04 °i• 0 O N O N ! Z • 0 2 v O O W N L C .0 d a J W 20 N r L0 o 0 12056054 SHEET wo Y CO �Ww =Q O U O WIRE MESH REINFORCEMENT (OPTIONAL) METAL, WOOD POST, OR STAKE. 8' MAX. SPACING, 2' INTO GROUND. DIRECTION O NATURAL SOIL ENGINEERING FABRIC FABRIC ANCHORAGE TRENCH, BACKFILL WITH TAMPED NATURAL SOIL ��nrtekr.�� NOTE: DEPENDING UPON CONFIGURATION, ATTACH FABRIC TO WIRE MESH WITH HOG RINGS, SIEEL POSTS WITH WIRES, OR WOOD POSTS WITH STAPLES. SILT FENCE INSTALLATION DETAIL NOT TO SCALE REMOVE AND REPLACEI I VEGETATION AS DIRECTED I I BY CARVER SWCD. \ � I J Minnetonka West\56054 Ci.dwg urw z nlr,uuunnn n�vrurur L/\IJ IIIVV JVUVI\nVL JVIL 3" BITUMINOUS PAVEMENT CONSTRUCTION DETAIL ENTRANCE WITH 3' BITUMINOI PAVEMENT OVER 8" CLASS 5 AGGREGATE AFTER EROSION I REMOVAL AND RESTORATION BEEN COMPLETED. /\\! REMOVE AND DISPOSE OF EROSION PLUME, ±300 CY Icni=►.1iealli I NEW So CLASS 5 CRUSHED LIMESTONE BASE AGGREGATE I I / I % I I I 1 1 1 I p l 11 1 1 i !1 w > < l l o I 1 l F l l i I I I 1 1 i l II 11 1 I I I 1 1 1 1 I I S i 1 1 1 I I I A 1 FIRST I I I I I ltLFITY ` \ \ RFLOOR Fs r-_ ELEV - I t I 1055.3 52 1 t s t \ � I I I qt r t \ SAN MH \ `\ RIM=1051.9 \ t I t t \ \ \ qL \INV=1036,8(PL `\ IN? 11040.50_',- - 1041 \� \ EXISTING BUILDING IN4t W=1037.55 -;-!'✓)N E -1038A0 INV W=1038.2 �---- ----- --------//01 —--Iu1049 ----------- --- - __..------- --- x x X X x _ X— ---X __ X _x--- X X X z 0 } W a� U Z 7 zo W :Z30 Z aCKa0 g�aZ0 am¢3To =zz W F W Z I=- < 0 J ¢aQz`L � woF0LU >. m F)U)a LL n—W F- r aW0cn W3wWw F d 0. _ U (K 7 U F- >- 0 (n W LL - >OUWw maF-cn0 W (If W W 2i = 0 0 U ro 0 N a 0 z 0 LU w H CUD r o N N Z 2 0 � 0 M W01-WQ >x c j C G s N °j y. 0 o v 00 2JOWZ N D Z W v C1 WG=ZZ 0.c O N N Q Z O L = 0 -0 v a O J a 0 a co Jwa N ro 0 N a 0 z 0 LU w F':�.Q H CUD � ti o N Z 2 0 � o� Q M W01-WQ >x 0 j Q j0U) J 2JOWZ W C1 WG=ZZ w Q Z O Z 0 O ALL EXISTING ITEMS AND CONDITIONS SHOULD BE VERIFIED BY THE CONTRACTOR BEFORE CONSTRUCTION, 0 J �O.Z W NZO(DW N 0 Z 0 0 z 0 0 W Z Q Z (9 0 Z W 0 z F':�.Q H CUD � ti o N Z 2 0 � o� Q M W01-WQ >x j OV17p0 0�W j0U) 0 10 20 40 2JOWZ W C1 WG=ZZ w Q Z 2N�2 F.W0� Z�o 0 Z0 ALL EXISTING ITEMS AND CONDITIONS SHOULD BE VERIFIED BY THE CONTRACTOR BEFORE CONSTRUCTION, 0 J �O.Z W NZO(DW N 23 o Q o o N 12056054 SHEET W 0 10 20 40 W C1 w 0 ALL EXISTING ITEMS AND CONDITIONS SHOULD BE VERIFIED BY THE CONTRACTOR BEFORE CONSTRUCTION, 0 0 U MANHOLE FRAME & COVER: NEENAH R-2540, TYPE C GRATE AT SIM: SOLID LID MINIMUM OF 2, MAXIMUM OF 5 CONCRETE ADJUSTMENT RINGS WITH FULL BED OF MORTAR BETWEEN EACH AND A 4" COLLAR ON THE OUTSIDE. NO SHIMS OF ANY MATERIAL ALLOWED. 6" PRECAST REINFORCED CONCRETE SLAB. SEAL WITH 2 BEADS OF RAM-NEK. ALL JOINTS IN MANHOLE TO HAVE '0' RING RUBBER GASKETS. MANHOLE STEPS, COPOLYMER POLYPROPYLENE PLASTIC, WITH 1/2" GRADE 60 STEEL REINFORCEMENT OR EQUAL, 16" O.C. PRECAST CONCRETE SECTION 8" PRECAST SEGMENTAL CONCRETE BLOCK TO TOP OF THE PIPE SHALL BE USED WITH SIZE AND DEPTH PROHIBIT THE FABRICATION OF PRECAST UNITS. GROUT AROUND PIPE AT EXTERIOR OF CATCH BASIN 8" MINIMUM SLAB THICKNESS, 6' MINIMUM DIAMETER PRECAST • + CONCRETE SLAB, REINFORCED aD ° •' WITH #4 REBAR ® 8" E.W. SECTION CATCH BASIN MANHOLE DETAIL BOX` NOT TO SCALE L_ F.E=1006.7 2056054 - Minnetonka Westi56054 C2 Aw0 CATCH BASIN RIM=1041.10 INV W=1035.2 REMOVE 18" STORM SEWER PIPE ® -- is, FES -1 1037.26 CONNECT TO EX. 18• PVC. 100', 4" DRAINTILE 6 1% (TYP) — DT – DT — FIRST FLOOR _ ELEV r = i 1050.1 FIRS] FLOO!t, ELEV CA1CH ASIN RIM='104 .46 -- TNM W=1037,55 -=i'✓ N E =1038.10 EXISTING BUILDING UU dL�ITY X X X X �X—X X SECTION LINE —X—X X — X X X X X — — _ _X X-- x -- xx—x- z 0 } W a W F FL 0 to U z 0 LU D Z ILW< z a W 0 amac9w co =zz _ 0 I- W Z �w0-t S as Q z u J: w z 0 0 I -x0 cn W >ainU) w n -W H �¢WOcn (if 3wWw 0 cc Y Ocn�LL m a w0 ��wwn = � wo3 _00 z! t0 r 0 N O 2Owaui WO�-WQ >=0.3 N d 0 C co C (A b N O OW �N �. h Z a O N N W � � Ql L r- ON = m 4)a J m Jw N « p CN a iZ x) 0 N a 0 z 6 A w z3�"oM 0 N 2Owaui WO�-WQ >=0.3 SHEET 0 ounno W 0. co j (A �JOm wo=Zz OW Z _zW�fA = a C2 LOOZ W O Lil O J W NZW�W 0. c iZ 0 N 12056054 SHEET 0 w Y 0 10 20 40 = a C2 ALL EXISTING ITEMS AND CONDITIONS SHOULD BE VERIFIED BY THE CONTRACTOR BEFORE CONSTRUCTION. 0 U O PROJECTIN : 2005 DRAINAGE IMPROVEMENTS t� A4nnutonka Country Ck.0 MINNETONKA PUBLIC SCHOOLS 4276 MINNETONKA PUBLIC SCHOOLS INDEPENDENT SCHOOL DISTRICT 276 17000 LAKE STREET EXTENSION MINNETONKA, MINNESOTA 55345 VICINITY MAP INDEX OF DRAWINGS PROJECT CONTACTS .In S 4 I ry HC'li do Field Park Mary O :.;Lake. Topographic Survey = t Grading and Erosion Control Plan lA n S n W0�W< - NSItstrY Ln yR Rd J�f /T }}`ts z r w K ,e �N ¢ Q - ¢ Z ,�l H K OW r ppppccm}} il MINNETONKA PUBLIC SCHOOLS 4276 MINNETONKA PUBLIC SCHOOLS INDEPENDENT SCHOOL DISTRICT 276 17000 LAKE STREET EXTENSION MINNETONKA, MINNESOTA 55345 VICINITY MAP INDEX OF DRAWINGS PROJECT CONTACTS .In S 4 I ry HC'li do Field Park Mary O :.;Lake. Topographic Survey = t Grading and Erosion Control Plan lA n S n W0�W< j % yR Rd J�f 0 I z r w K J O CO Topographic Survey 4 Grading and Erosion Control Plan C2 Utility Plan d W0�W< j % yR Rd J�f 0 I z r w K �a �N ¢ Q - ¢ Z N p H K OW ppppccm}} il q T .A �a�, Harnson LS N- Park S! ¢+<,ynouYrR a �a Sd` I y 9 s e E I Malady Hao Nd fl Ed v n e5ci, s(� �r::ary 0 yYew pr __ Pheasant Cra - Ilil a Park Minnetonka Middle School West 6421 Hazeltine BOUlevard a i S a0 p T sF a 1 T Title, Vicinity Map, Sheet Index, Contacts CO Topographic Survey C1 Grading and Erosion Control Plan C2 Utility Plan Civil Engineer: Michael A. Murphy, P.E. Larson Engineering of Minnesota 3524 Labore Road White Bear Lake, MN 55110 Tel: 651.481.9120 Fax: 651.481.9201 mmurphy@larsommn.corn Surveyor: Daniel L. Thurmes, L.S. Cornerstone Land Surveying, Inc. 200 East Chestnut Street Stillwater, MN 55082 Tel: 651.275.8969 Fax: 651.275.8976 dit-csls@mcleodusa.net Z 0 } W ti ¢ W W o U Z � p A W p Z o d W0�W< C "ato g2,¢Zo 0 ayl-_�nIn z U HLU p w K J \ W �N ¢ Q - ¢ Z N p H K OW }ainW¢ W rn—W H il t ¢wa(n W (Y W T W uI-aax U � m a d'7) H > O ti W W m W a-� CO p W WU Z d _ x Lr U d LU u Q _00:i - p Rf ti Q o o O 12056054 N OM d W0�W< C "ato C >2NJ 0 N C �N N p ^� O L O W N Y N T L = � m a • m N _IW Ma W W W J H 0 Z 0 0 Z Q 0 Z 0 0 Z r ti Q o o E-W Z 12056054 ~ OM I W0�W< "ato >2NJ W f- WTH aNmo J0WZ �mw 0 0 �ou o�NJ� Z �W� -YZNO ZD2J W WWWV W N NZW�W eJ 23 2 Q o o 12056054 SHEET W WTH ALL EXISTING ITEMS AND CONDITIONS SHOULD BE VERIFIED BY THE CONTRACTOR BEFORE CONSTRUCTION. p 0 0 �s BENCHMARKS: ELEVATIONS BASED ON TOPOGRAPHIC SURVEY BY CLARK ENGINEERING DATED AUG. 14, 1996. THE RIM ELEVATION OF THE CATCH BASINS AS SHOWN ON THE SURVEY WERE USED AS BENCH MARKS. EXISTING LEGAL DESCRIPTION: PART OF THE SW 1/4 OF THE NW 1/4 OF SECTION 3, Tl 16, R23, CARVER COUNTY,MN SURVEY NOTES: THE ORIENTATION OF THIS BEARING SYSTEM ISASSUMED FIELDWORK WAS PEFORMED MAY. 7, 2005 TOPOGRAPHIC FEATURES WERE SHOT TO THE BEST OF OUR ABILITIES DESPITE THICK FOLIAGE. A GOPHER STATE ONE CALL UTILITY DESIGN LOCATE WAS INITIATED ON THIS SITE. THE UTILITIES SHOWN HEREON WERE FIELD LOCATE PER VISIBLE STRUCTURE AND GOPHER STATE ONE CALL MARKINGS WHERE POSSIBLE. CITY AND UTILITY AS -BUILT PLANS WERE RELIED ON FOR OTHER INFORMATION. ADDITIONAL UTILITIES OF WHICH WE ARE UNAWARE MAY EXIST. 0 20 40 %7=m CALL BEFORE YOU DIG! V Gopher State One Call " TWIN CITY AREA: 651-451-0002 TOLLFREE: 1-800-252-1166 u Ian was prepared supervision, and Land Surveyor e of MINNESOTA. Daniel L. Thurmes Regis ration No: 25718 Date: 5 _ 11 _ 0 5_ - LEGEND: • DENOTES FOUND W U 1/2" IRON PIPE 0 DENOTES SET 0 1/2" IRON PIPE I-Z WELL 0 CATCH BASIN K HYDRANT A WATER VALVES ZN SIGN m UTILITY POLE $ LIGHT POLE ID TELE/ELEC BOX "g GAS VALVE �— OVERHEAD WIRES 0 MANHOLE 0 CULVERT w GAS METER "--r FENCE IJW CURB 0 CONCRETE 1 FOOT CONTOUR INTERVAL ALL EXISTING ITEMS AND CONDITIONS SHOULD BE VERIFIED BY THE CONTRACTOR BEFORE �a —ON. n y d y C W U > N '� N N N � y ZZ Tm ,== m ry ry a E 0 ;0v22 I-Z ; j 3 CW 9 V) i o2== Lu N5 6e W z' o cli m ZN o CO Cie 0 OZ z Z u5 v �a H co ti 0 o 0 SHEET N Lu U d I— C U C Lc) C C o cli m W o CO 0 z Z = v Q=N- O L O y N y d J 0� vI L c a N a wNJOcn J m IJW N i � a WWOmW LLI u F: O O (L O H H co ti 0 o OWE Q SHEET Lu U �- I— J U W = Lc) JOQ� ❑ j", ❑ Q=N- jH 2V0D0 wNJOcn WWOmW W�2Z Z_ LIJ � N 0 �W� J W �ZC2J �0ZNW (a W aZW C4 0 0 o 12056054 SHEET Lu U Ljj CO W = Q ❑ U ❑ WIRE MESH REINFORCEMENT (OPTIONAL) METAL, WOOD POST, OR STAKE. 8' MAX. SPACING, 2' INTO GROUND. r / / JJ 1 JJ I l I J ENGINEERING FABRIC NEW 3" BITUMINOUS PAVEMENT l 1 1 1 I I o PLACED IN 2 LIFTS FABRIC ANCHORAGEA l l o J a TRENCH. BACKFILL WITH I J I' I I J w TAMPED NATURAL SOIL�� IF o Opo C� op oC) � DIRECTION OF RUNOFF I Q i _ _ NEW 8"LASS 5 J I I I I I I :� — — — — — — — — — — CRUSHEq LIMESTONE -I I -I I -I I -III -I -I I -I I -I -I I -III -III -III -I BASE AGGREGATE 1 I I I I I I I I I=11 1=11 1=1 I _1 1 1=1 1 1=1 1 1=1 1 1=1 1 1=1 I IE1 I IE 1 I M I I =1 I I-111=III=1 I MI 11=III=1 11=1 11=1 I IEl 1 1=1 1 1=1 11=1 NATURAL SOIL —� 111=111=111=111=111=111=111=111_111=111=111=111=111 �¢ \ / I I_ I I I I \\ \\ do ATTACH R0 WIRE EXISTING SUBGRADE SOIL FLOOR NOTE: GH FIRST WITH HOG RINGS, POSTS WOODPOS H STAPLES. ELEV SILT FENCE 3" BITUMINOUS PAVEMENT 1055.3 Ln INSTALLATION DETAIL 2 CONSTRUCTION DETAIL I / I i i NOT TO SCALE \Ic-ij NOT TO SCALE s1P 11 \\ z_ TELE I / 1 I II II I II I \\ \\ \\y 22 \\ SAN MH\\\ 1111 \\ i BOXI o RIM=1051.9 \ \ \ INV=1036.8CPLA I / I I 11 11 11 1 11 \1 -' \\\ \\ \;�e� \ 4'�3\\ < �� END j y o Q PIPE -1009.25 I I I \ 1 1 \ \ \ 2 \ l 1 \ \ \ ` ,.tom _ 'P ti 2 FIRST 0 1 1 1 1 1 1 1 \ 1 \ \ \ c ` L « I I I 1 \ \ \. \ �` �� -,� ._.� �.-_ ��-------'-- FLOOR 1 �Fa� (// ��-« 12 I \ `',_ - F a� `ELEV lilJ _ i 'CA�EH-BASIN _ -, _ e~ _ _ _ ' 1050.1 �°/� I J J FIRST !o �eY I i ' I I 1 1 1 \ 1 \ \o �� -RIM 1004---11 s�_ �� ` ~Z�---- �� FLOOR ?/ MN/DOT CLASS IV // /ti / // / / /� 11 1 1 18' p✓� j �u If I 1 o I I I I / r �� \ '--- -- - `--------`� \ \\ I' ELEV RIP -RAP OVER MIRIFl 1 1 I o t I w i / / / « _ _ �= 500X FABRIC., I" /r l \ I I I I I I j /\ \ \ , I I I 1 I / / / J -- « _- __----------_� \ 1 1 .6 .S�v Izd"l I I 1 I / I I i J J i /p, a� / --- ` I I I J I I N « ---------f<_-_-- Eq 1040.50 1041_ \ CATCIi BASH `1040 INV y=1037, 1039 INV Lr 1037,7Q'� 1038 ui I I I \ - _ _ ) / 2 /J \ \ 1037 LIQ I (� / 1 I // I j /// / I i o I I I JI I I i 1 - // �/ \ 11 I X X38 X / SILT FENCE 43 _= \p / I BI'[1�_�# t �-i_ T I 'I \ 'u\ \ (.(- _ ��1\ 1035 a �, 2 FILE M. 't / p f \ 1 T TWIN \ \ \ \ \\ S l - \\�1 o I \ C1 C1 I / I alt I FENCE, {YP. \ \ pp WLR \ a \ cp PDLE 1 FILTRATION BASIN 9L v \ F < <<- _ BTM= 1035.0 \ 100YR= 1039.4 \I LF.E=1106. F \ \\ \ \ \ 1 to \ \ \ \ \� _ \ \\\ \ CB i--` Dr - - Or _ _ ._ _ E 3 6 ( qJ C TCH ASIN REMOVE AND REPLACE I 1 I \ \ \\ \ \ \ \ \ 1 1 1 1 \ \ \ \ k \\\ 1111 M oNN T 0 ` RI =103.415 VEGETATION AS DIRECTED I I 1 \ \\ \� \ \ \ \ \ \ 1 1 \ \ \ \ \ \ \\1111\ o / ' INLET PROTECTION TYP. X. 1 ' V BY CARVER AS D. \ \\ \ \ \ \_ \ 1 1 \ \ \ \ \ \ \ 1111\ \o 1N,) WE1-1038.10 038. 0 \ f \\ \\\ \ \ \ \ \ \ \ \ \ \ \. \ \\ ♦, \ 1111\ /] ,; Ar EXISTING BUILDING 1--CSTS \ \ --'- - --- I —�-CIN�CH BASIty / RIM-- V =1038.2 INV W-1038.2\, I REPLACE EXISTING PRIVATE VES\\ \ \ \ 11 \ \ \ \ \ \ \ \ 1 \\ \�\\\\\\ �c \ Di / // ENTRANCE WITH 3' BITUMIN \ \ \ \ \ \ \ \ _. _ I I PAVEMENT OVER B" CLASS 5 BR\\ \\ \ \\ \\ i \ \ \ \ � \ \ \ \\ cws- AGGZEGATE AFTER EROSION; ;PW \ \ \\ \ 1 \ \ \ \ \ \ ` w oiA I \ \ \ \ I I I I I1 / 1035 — — — — — — — — — — — — — — — — — I I REMOVAL AND RESTOR TION HAS \ \ \\ \ \ \ \ \ \ \ \ \ Z\ \ \ \ I I I I i i / X X I BEEN COMPLETED. 10X— - - - - - - - - - - - - - - - - - - \\ \ \ \ \ \ \\ \ \\ \ \\ 1 1 I I I I I `�X 1037 � / �.- _ I 1 \ \ \ \ \ \ ro \ \v`\ \ \ 1 I \\\ �\\ �\ 1038 / / o / 1039 -- -- -- ----- -------------- 11 \ r \ o \ \ I \ \ \ 1 N \\ ��\ �� 1040 / 1 \ONS — — — — — — — — — — ------'— REMOVE AND DISPOSE OF o \ EROSION PLUME, ±300 CY i \ \ �'o \ \ \ \ \ \ \�` \ i I I aaxk Y \ \ �� \� 1041 1046 --- - / / \\ \ \ \ \ 1111 \ \ 1 1 ( X� \ \\\��\ _ _ 1042—== --- f / / 1047 ----- ---------------------- \ X!\ X 1048- — Oull x _ --------- - - - SECTION LINE X _ x X --X .�E� —X x_ - f L- - X X X X _ X X— X X --X-- ALL EXISTING ITEMS AND CONDITIONS SHOULD BE VERIFIED BY TH z Or � w QuJ H u o � 0 W Uz Z) 0 o w�0z 4b a of co0�wQ n`O v 3: g2awo 0 CLo L >_ z m xzz 0�wz I- uj O to W J g Qa LL E CONTRACTOR BEFORE CONSTRUCTION. ¢ ¢ z w z� � 11 O U ra n'n¢ zL �LL ¢>0c 0N N_ I- V LU J ULU a a 2 X e ' r0ai0LLMa. o ncc a UJ LLi wM c v I - w�w3 " _ _00 - 5 - 0 0 z 0 55 W 0 z 0 z O W 0 z H � ti o 0 12056054 N 4b d LU w 3: � �M o N N w O o� E CONTRACTOR BEFORE CONSTRUCTION. 0 z� C zL O Qi 0N N_ J WQ d L o ncc a _ a In J LLI N M a RALLY 0 z 0 55 W 0 z 0 z O W 0 z H � ti o 12056054 LLJ 4b LU w 3: I... �M Z w0ci E CONTRACTOR BEFORE CONSTRUCTION. 0 0 0 � w0 WQ >=yJF- OVG:)O co 0 ch aJmLu LJOWZ ZF_ Z�o LLI LL ZD LLJ J LLJ �OW04V N NZLu Lu �Z o Q o 12056054 SHEET 0 10 20 40 LU w C 1 E CONTRACTOR BEFORE CONSTRUCTION. 0 0 0 °v I 5" MIN. d 30" m ~— N c N •. MANHOLE FRAME & COVER: NEENAH R-2540, TYPE C GRATE AT SIM: SOLID LID MINIMUM OF 2, MAXIMUM OF 5 CONCRETE ADJUSTMENT RINGS WITH FULL BED OF MORTAR BETWEEN EACH AND A 4" COLLAR ON THE OUTSIDE. NO SHIMS OF ANY MATERIAL ALLOWED. 6" PRECAST REINFORCED CONCRETE SLAB. SEAL WITH 2 BEADS OF RAM-NEK. ALL JOINTS IN MANHOLE TO HAVE '0' RING RUBBER GASKETS. MANHOLE STEPS, COPOLYMER POLYPROPYLENE PLASTIC, WITH 1/2" GRADE 60 STEEL REINFORCEMENT OR EQUAL, 16" O.C. PRECAST CONCRETE SECTION 8" PRECAST SEGMENTAL CONCRETE BLOCK TO TOP OF THE PIPE SHALL BE USED WITH SIZE AND DEPTH PROHIBIT THE FABRICATION OF PRECAST UNITS. GROUT AROUND PIPE AT EXTERIOR OF CATCH BASIN 8" MINIMUM SLAB THICKNESS, 6' MINIMUM DIAMETER PRECAST CONCRETE SLAB, REINFORCED ,.. .. WITH #4 REBAR ® 8" E.W. SECTION CATCH BASIN -� MANHOLE DETAIL BOXE NOT TO SCALE I I /0- 9� F� �9 r� 9� s SAN 2� RIM= y� INV- �10� �y F CATCH BASIN RIM=1041.10 INV W=1035.2 REMOVE 18' STORM SEWER PIPE 100', 4' DRAINTILE ® 1% (TY?) — DT DT — FES -1 1037.26 CONNECT TO EX. 18' PVC. FIRST o j FLOOR a N _ ELEV ao 1osi:.l EXISTING FIRST a -FLOOR BUILDING ELEV 0 aM<3LU Z ti « —« 12'STS CATCH $ASIN RIM=104£.46- " 1 --------.__ INV W=1037.55 II,'✓ N E--103810 OrIc,ry t ---s X x x X x_ x x—x x ---x-- -- x—x- x — X x -- z O Y w o a 2 FF-- a N UZ° ao W ° z m ate¢° rn02Wa a C 3��M gw- 0 0 aM<3LU Z °�zZ = w w - w w N N ¢00_<ZLL 2wZ00 N D >a�w N¢ z wrn—wF N Q K 0 0 .w... K 3 w K w L wF aax °�° e > O O W w wa~N0 LLI 0 N W wIW� w _oa:1 - ❑ m o ¢ a N O 12056054 to d o C 3��M u CC G b C� C v N N }r N D < z L .w... O L O N N_ 111 >=NJH 0 N ' J m c N JW na Q J J 0 z 0 0. z 0 z 0 D w O 2 o ¢ a N 12056054 SHEET o HW�oM 3��M u zIll 0 10 20 40 mow> w < C2 w 0 U 111 >=NJH Ovonp ILW0MW �J0WZ NJ� Z -�z� W� zo=J O.Z W � N NzW�W �Z o ¢ a N 12056054 SHEET o u LU Y 0 10 20 40 w < C2 ALL EXISTING ITEMS AND CONDITIONS SHOULD BE VERIFIED BY THE CONTRACTOR BEFORE CONSTRUCTION. 0 U a