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CAS-05_2011-05 WATER TOWER SITE PLANMinnesota Department of Transportation Metropolitan District m e Waters Edge oFrn�20 1500 West County Road B-2 Roseville, MN 55113-3174 June 16, 2011 Robert Generous, Senior Planner City of Chanhassen 7700 Market Boulevard PO Box 147 Chanhassen, MN 55317 SUBJECT: 750,000 Gallon Water Tower Mn/DOT Review # Sll-025 East side of TH 41, North of Lake Lucy Rd. City of Chanhassen/Carver County Control Section 1008 Dear Mr. Generous: RECEIVED JUN 2 0 2011 CITY Of CHANHASS€N Thank you for submitting the 750,000 Gallon Water Tower plan. The Minnesota Department of Transportation (Mn/DOT) has reviewed the plan and has the following comments: Design: The City of Chanhassen submitted a state aid project for a pedestrian/bicycle path, in Mn/DOT right-of-way, from Ches-Mar Farm Rd. to Chaska Rd. Please show the Water Tower plan in relationship to the proposed path (SP #1008-73). Please show the proposed grading around the new water tower. Please show the profile for the 12" pipe. The slopes may need different slope protection. For questions concerning these comments, please contact Nancy Jacobson, Mn/DOT Metro District Design Section, at 651-234-7647 or nancy.jacobson@state.mn.us Water Resources: This site will drain to Mn/DOT right-of-way, therefore a Mn/DOT drainage permit will be required. The drainage permit application form can be found at hM://www.dot.state.mn.us/utility/forms/index.htm]. The following information is required with the drainage permit application: • The final drainage plan showing storm sewer plan, storm sewer and culvert profiles and pond contours. • Existing and proposed drainage area maps with flow arrows. • Existing and proposed drainage/pond computations for the 2, 10, and 100 year rainfall events. An equal opportunity employer Addition information may be required once a drainage permit is submitted and after a detailed review. For questions concerning these comments, please contact Arash Moin, Mn/DOT Metro District Water Resources Engineering at 651-234-7542 or arash.moinna.state.mn.us Permits: As previous stated, a drainage permit will be required. Additionally, any work impacting MnDOT right of way requires a permit. Permit forms are available from MnDOT's utility website at http://www.dot.state.nm.us/utility/ . Please include one full-size plan set, and an 11 x 17 inch plan set for each permit application. Please direct any questions regarding permit requirements to Buck Craig, MnDOT's Metro Permits Section, at (65 1) 234-7911. Standard Submittal Statement. As a reminder, there are four submittal options. Please submit either: 1. One (1) electronic pdf. version of the plans. Mn/DOT can accept the plans via e-mail at metrodevreviews.dot(a),state.mn.us provided that each separate e- mail is less than 20 megabytes. 2. Three (3) sets of full size plans. Although submitting seven sets of full size plans will expedite the review process. Plans can be sent to: Mn/DOT — Metro District Planning Section Development Reviews Coordinator 1500 West County Road B-2 Roseville, MN 55113 3. One (1) compact disk. 4. Plans to Mn/DOT's external FTP Site. Please send pdf. files to: ftp://ftp2.dot.state.mn.us/pub/incoming/MetroWatersEdge/Planning Internet Explorer doesn't work using ftp so please use an FTP Client or your Windows Explorer (My Computer). Also, please send a note to metrodevreviews.dot@state.mn.us indicating that the plans have been submitted on the FTP site. If you have any questions concerning this review please feel free to contact me at (651)234-7794, Sincerely, --Tod-Shem►an Planning Supervisor Copy sent via E -Mail: Arash Moin, Water Resources Buck Craig, Permits Dale Matti, Right -of -Way Nancy Jacobson, Design Kristen Zschomler, Area Engineer David Sheen, Traffic Ann Braden / Metropolitan Council Notice of Public Hearing Chanhassen Planning Commission Meeting Date & Time: Tuesday, June 21, 2011 at 7:00 P.M. This hearing may not start until later in the evening, depending on the order of theagenda. Location: City Hall Council Chambers, 7700 Market Blvd. Proposal: Request for Site Plan Review for construction of a water tower on property zoned Office Institutional OI . Applicant: City of Chanhassen Property 6421 Hazeltine Boulevard (Minnetonka Middle School West) Location: A location map is on the reverse side of this notice. The purpose of this public hearing is to inform you about the i applicant's request and to obtain input from the neighborhood about this project. During the meeting, the Chair will lead the What Happens public hearing through the following steps. 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 oroiect. If you want to see the plans before the meeting, please visit the City's projects web page at: www.ci.chanhassen.mn.us/serv/plan/11-05.html. If you wish to talk to someone about this project, please contact Bob Questions & Generous by email at bgenerous(a)ci.chanhassen.mn.us or by Comments: phone at 952-227-1131. If you choose to 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 on the project web site listed above the Thursday riot 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. 1 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 1 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 commerciallindusmal. • Minnesota State Statute 519.99 requires all apolicalions 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 pracess should check with the Planning Department regarding its status and scheduling for the City Council meeting. • A neighborhood spokesperson/representabve 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, please contact the Planning Stall person named on the notification. •� ti CITY OF CHANHASSEN 77M"• Boulevard S 2Os , ° P \ \\ r \ Disclaimer Fo�SpNG aE IT 14N g fp ; asrona Tis hisnma bf' PNy1a�� R�'?�RN \\\�"'at\\'coded to be used p C Y \\\r" cafe located in various city, county, state: \\��rr . regarding the area shown, and is to be used for \ �\ �" ne City does not warrant that the Geographic Informal used to prepare this map are error free, and the City does not rep. ..,d GIS Data can be used for navigational, tracking or any other purpose req .a exacting measurement of distance or direction or precision in the depiction of geographic features. If errors or discrepancies are found please contact 952-227-1107. The preceding disclaimer is provided pursuant to Minnesota Statutes §488.03, Subd. 21 (2000), and the user of this map acknowledges that the City shall not be liable for any damages, and expressly waives all claims, and agrees to defend, indemnify, and hold harmless the City from any and all claims brought by User, its employees or agents or third parties which arise out of the user's access or use of (I -OS $CANNED 049-182036654 $ 00.440 0610912011 rbailed From 55317 US POSTAGE l� innesota 55317 ennn.us (O R -e, t lei MATTHEW R HANSON 5775 SMITHTOWN WAY EXCELSIOR MN 55331-4401 data provided. •-•..•_. .: :..,::--.e --.: tr trtutrtnr(trtr(�nn((r �rrlrtn((tnun((tnrlr (rl nrl r�( 17bo3�4'7 G tf� CITY OF CHANHASSEN CARVER & HENNEPIN COUNTIES NOTICE OF PUBLIC HEARING PLANNING CASE NO. 11-05 NOTICE IS HEREBY GIVEN that the Chanhassen Planning Com- mission will hold a public hearing on Tuesday, June 21, 2011, at 7:00 P.m. in the Council Chambers in Chanhassen City Hall, 7700 Market Blvd. The purpose of this hearing is to consider a request for Site Plan review for construction of a water tower improperly zoned Office Insti- tutional (OI) located at Minnetonka Middle School West (6421 Hazeltine Boulevard). Applicant: City of Chanhassen. A plan showing the location of the proposal is available for public review on the City's web site at www.cl.chanhassen.mn.us/serv/ plan/11-05.html or at City Hall during regular business hours. All interested persons are invited to at- tend this public hearing and express their opinions with respect to this proposal. Robert Generous, Senior Planner Email: bgenerous@ ci.chanhassen.mn.us Phone: 952-227-1131 (Published in the Chanhassen Villager on Thursday, June 9, 2011; No. 4514) Affidavit of Publication Southwest Newspapers State of Minnesota) )SS. County of Carver ) Laurie A. Hartmann, being duly sworn, on oath says that she is the publisher or the authorized agent of the publisher of the newspapers known as the Chaska Herald and the Chanhassen Vil- lager and has full knowledge of the facts herein stated as follows: (A) These newspapers have complied with the requirements constituting qualification as a legal newspaper, as provided by Minnesota Statute 331 A.02, 331 A.07, and other applicable laws, as amended. (B) The printed public notice that is attached to this Affidavit and identified as No.L/ 5-/ 1/ was published on the date or dates and in the newspaper stated in the attached Notice and said Notice is hereby incorporated as part of this Affidavit. Said notice was cut from the columns of the newspaper specified. Printed below is a copy of the lower case alphabet from A to Z, both inclusive, and is hereby acknowledged as being the kind and size of type used in the composition and publication of the Notice: abcdefghiJkimnopgrstuvwxyz By: Laurie A. Harhnann Subscribed and sworn before me on this day of 2011 Nolir JYMME J. BARK Ia. NOTARY PUBLIC - MINNESOTA My Commission Expires 01/31/2013 RATE INFORMATION Lowest classified rate paid by commercial users for comparable space.... $31.20 per column inch Maximum rate allowed by law for the above matter ................................ $31.20 per column inch Rate actually charged for the above matter .............................................. $12.59 per column inch SCANNED CITY OF CHANHASSEN CARVER AND HENNEPIN COUNTIES, MINNESOTA FINDINGS OF FACT AND RECOMMENDATION IN RE: Application of the City of Chanhassen and Independent School District 4276, for Site Plan Review for a 750,000 -gallon, 170 -foot tall water tower in the Office Institutional District (OI). On June 21, 2011, the Chanhassen Planning Commission met at its regularly scheduled meeting to consider the application of the City of Chanhassen and Independent School District #276 for Site Plan review for a 750,000 -gallon, 17 -foot tall water tower for property located at 6421 Hazeltine Boulevard. The Planning Commission conducted a public hearing on the site plan 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 1. 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: See attached Exhibit A 4. Site Plan Findings: a. The proposed development is consistent with the elements and objectives of the City's development guides, including the comprehensive plan, official road mapping, and other plans that may be adopted; Finding: The development of the site is consistent with the City's development guides and comprehensive plan. b. The proposed development is consistent with the site plan review requirements; Finding: The site is consistent with the site plan review requirements and complies with all zoning code requirements. c. The proposed development preserves the site in its natural state to the extent practicable by minimizing tree and soil removal and designing grade changes to be in keeping with the general appearance of the neighboring developed or developing or developing areas; Finding: The propose tower is in a location that has previously been altered with the development of the site. The proposed development is in keeping with the general SCANNED appearance of the neighboring developed or developing areas. The proposed development will improve surface water treatment of run-off. d. The proposed development creates a harmonious relationship of building and open space with natural site features and with existing and future buildings having a visual relationship to the development; Finding: The development will be harmonious with the existing site buildings and features. e. The proposed development creates a functional and harmonious design for structures and site features, with special attention to the following: 1) An internal sense of order for the buildings and use on the site and provision of a desirable environment for occupants, visitors and general community; Finding: The proposed expansion is in a logical and practical location on the site. 2) The amount and location of open space and landscaping; Finding: The proposed tower is located in a location that was previously altered. 3) Materials, textures, colors and details of construction as an expression of the design concept and the compatibility of the same with adjacent and neighboring structures and uses; and Finding: The proposed tower will be in keeping with the existing building. 4) Vehicular and pedestrian circulation, including walkways, interior drives and parking in terms of location and number of access points to the public streets, width of interior drives and access points, general interior circulation, separation of pedestrian and vehicular traffic and arrangement and amount of parking. Finding: Access to the site shall remain as exists. Parking areas and circulation comply with code requirements. 5) Protects adjacent and neighboring properties through reasonable provision for surface water drainage, sound and sight buffers, preservation of views, light and air and those aspects of design not adequately covered by other regulations which may have substantial effects on neighboring land uses. Finding: Surface water is being directed to an improved storm water system. The tower is located in a logical location on the site. 5. The planning report, Planning Case #11-05 dated June 21, 2011, prepared by Robert Generous, et al, is incorporated herein. The Planning Commission recommends that the City Council approve Planning Case #2011-05 for Site Plan approval for a 750,000 -gallon, 170 -foot tall water tower on property located at 6421 Hazeltine Boulevard. ADOPTED by the Chanhassen Planning Commission this 21" day of June, 2011. CHANHASSEN PL OMMISSION BY: Its Chairman F:\IIII31T A LEGAL DESCRIPTION The Southwest Quarter (SW 1/4) of the Northwest Quarter (NW 1/4) of Section Three (3), Township One Hundred Sixteen (116), Range Twenty Three (23) West, according to the U. S. Government Survey thereof, excepting therefrom the 35/100ths acres conveyed by deed recorded in the office of the Register of Deeds of Carver County, Minnesota, in Book 8 of Deeds, page 400, and that port thereof conveyed by deed recorded in the office of the Register of Deeds of Carver County, Minnesota, in Book 41 of Deeds, page 322, and subject to the right, title and interest of the State of Minnesota in that strip of land conveyed by deed recorded in the office of the Register of Deeds of Carver County, Minnesota, in Book 33 of Deeds, page 25. Also that part of Lot E, Bordweil Acres, not conveyed by said deed recorded in the office of the Register of Deeds of Carver County, Minnesota, in Book 41 of Deeds, page 322. Subject to a permanent easement for roadway purposes as recorded in the office of the Register of Deeds of Carver County, Minnesota, in Book 64 of Deeds, page 32. MY OF 7700 Market Boulevard PO Box 147 Chanhassen, MN 55317 Administration Phone: 952.227.1100 Fax: 952.2271110 Building Inspections Phone: 952.227.1180 Fax: 952.227.1190 Engineering Phone: 952.227.1160 Fax: 952.2271170 Finance Phone: 952.2271140 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 7901 Park Place Phone: 952.227.1300 Fax: 952.2271310 Senior Center Phone: 952.2271125 Fax: 952.227.1110 Web Site www.d.chanhassen.mn.us July 19, 2011 Mr. Paul Oehme, P.E. Public Works Director City of Chanhassen 7700 Market Boulevard P. O. Box 147 Chanhassen, MN 55317 Re: Water Tower at Minnetonka Middle School West Planning Case #2011-05 Dear Mr. Oehme: This letter is to confirm that on July 11, 2011, the Chanhassen City Council approved the Site Plan for a 750,000 gallon water tower located at Minnetonka Middle School West, plans prepared by SEH dated February 22, 2011, subject to the following conditions: 1. The pedestal shall be painted sky blue if a steel shell, or if constructed of a composite concrete material shall be stamped with architectural patterns to mimic block or brick. The light fixture shall have a 90 -degree cut-off angle and be shielded from off-site view. 3. Haul routes must be established for the trucking of material off the site. 4. A building permit is required for the retaining walls since they will be at least four feet high. 5. The retaining walls must be designed by an engineer registered in the State of Minnesota. 6. The following additional information must be shown on the grading plan: a) Show the top and bottom of wall elevations. b) Provide more spot elevations along the driveway and the area to the north of the driveway, ensuring that minimum 1% grade is achieved on paved surfaces and minimum 2% grade is achieved in the green area. Chanhassen is a Community for Life- Providing for Today and Planning for Tomorrow Mr. Paul Oehme July 19, 2011 Page 2 7. A plumbing permit is required for the proposed sewer relocations. 8. Contact the Utility Department at 952-227-1300 a minimum of 48 hours before tapping into the existing watermain. MnDOT permits are required for the proposed watermain and storm water pond outlet pipe. 9. Tree protection fencing shall be installed at the edge of the grading limits. 10. A building permit is required. 11. Geotechnical investigation and report required. 12. All plans must be prepared and signed by design professionals licensed in the State of Minnesota. 13. Portions of retaining wall(s) exceeding four feet in height must be professionally designed. 14. The owner and or their representative shall meet with the Inspections Division to discuss plan review and permit procedures. 15. If the total disturbance exceeds one (1) acre in area an NPDES General Stormwater Permit for Construction Activities will be needed from the MPCA. 16. If an NPDES Permit is needed, a Storm Water Pollution Prevention Plan will need to be prepared and submitted for review and the conditions of the permit must be met. 17. The outlet to the right-of-way for MN Trunk Highway 41 will need to be stabilized immediately upon connection. 18. The pond must be protected from sedimentation to the greatest extent practicable during construction and all sediment deposited during construction must be removed to return the pond to the design conditions. A record drawing shall be prepared showing this condition to be met. 19. The plan must address the comments from the Carver County SWCD. 20. The proposed conditions will result in a decrease in runoff rate for the 2, 10 and 100 -year events and an increase in total phosphorus and suspended solids removal. 21. The underdrain bedding material shall be washed river rock wrapped in a high-flow filter fabric. a"• ,'x Mr. Paul Oehme July 19, 2011 Page 3 22. According to the Carver County Soil Survey and double ring infiltrometer tests performed by the School District, this site may well be conducive to infiltration. To this end an additional hold down should be constructed below the underdrain such that the feature is a filtration/partial recharge feature as described in the Minnesota Stormwater Manual. 23. Eliminate CBMH 109 and bulkhead the outlet from the upstream structure to the west. Move CBMH 107 to the east into the location of the existing manhole. Replace this structur�as needed and outlet to the pond. The end result will be a single outlet point into the first cell near the pinch point of the 1035 -foot contour. All erosion control measures and tree protection fencing must be installed and inspected prior to grading operations. If you have any questions or need additional information, please contact me at (952) 227-1131 or bgenerous@ci.chanhassen.mn.us. Sincere! e Robert Generous, AICP Senior Planner RG:ktm ec: Todd Gerhardt, City Manager Kate Aanenson, Community Development Director Jerry Mohn, Building Official cc: Mr. Mike Condon, Independent School District #276 giplartUOI I planning cases\I1-05 water tower site plan\approval letterAm 0 CITY of CHANHA3SEN 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: 952.227.1160 Fax: 952.2271170 Finance Phone: 952.227.1140 Fax: 952.227.1110 Park & Recreation Phone: 952.227.1120 Fax: 952 2271110 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 7901 Park Place Phone: 952.227.1300 Fax: 952.227.1310 Senior Center Phone: 952.227.1125 Fax: 952.227.1110 Web Site MEMORANDUM TO: Todd Gerhardt, City Manager FROM: Bob Generous, Senior Planner DATE: July 11, 2011 p r SUBJ: Site Plan Review for Construction of a Water Tower Planning Case #11-05 PROPOSED MOTION "The Chanhassen City Council approves the Site Plan for a water tower located at Minnetonka Middle School West, plans prepared by SEH dated July 11, 2011 subject to the conditions of the staff report; and adoption of the findings of fact." City Council approval requires a majority vote of City Council present. EXECUTIVE SUMMARY The City of Chanhassen is requesting site plan approval to construct a 750,000 gallon water tower on the Minnetonka Middle School West site. Utility services are a permitted use on the site. The water tower will be located in the extreme southwest corer of the property between the school building and the south and west property lines. Staff visited the Minnetonka Middle School site to evaluate the material options. The school building material is primarily red brick. Staff recommends the use of 12008 Mankato Cut Stone (see photo). The design of this custom rock concrete resembles the brick design. The horizontal lines will de- emphasize the height of the tower. Staff also recommends the use of www.ci.chanhassen.mn.us an expanded cornice at the connecting point of the tank and pedestal to add architectural interest. If this material is used, staff strongly recommends that the tank color be a shade complimentary to the tan and avoid using the typical sky blue. SCANNED Chanhassen is a Community for Life - Providing torToday and Planning for Tomorrow Todd Gerhardt July 11, 2011 Page 2 PLANNING COMMISSION SUMMARY The Chanhassen Planning Commission held a public hearing on June 21, 2011. The Planning Commission voted unanimously to recommend approval of the site plan for the 750,000 gallon water tower. The Planning Commission noted that the reason for the water tower was to improve public safety through the provision of adequate water capacity in the northwest part of the city. Planning Commission minutes are item la of the July 11, 2011 City Council packet. RECOMMENDATION The Planning Commission and staff recommend adoption of the motion approving the 750,000 gallon water tower on the Minnetonka Middle School West property subject to the conditions of approval specified on pages 6 and 7 in the staff report dated June 21, 2011. ATTACHMENTS 1. Revised Plans prepared by SEH dated July 11, 2011. 2. Planning Commission Staff Report Dated June 21, 2011. glpla t\2011 planning cases\I l-05 water tower site plan\executive suttunary.doc CONSTRUCTION DRAWINGS FOR 750,000 GALLON WATER TOWER FOR THE CITY OF CHANHASSEN, MINNESOTA PM&7 N Localo m M LI[ K41L SHEET NUMBERING LEGEND MMPIIN' G aww.aaWnw c Qa L www P nom E na P1 � Ga4wur. uuueea SHEET INDEX GI ,me aim rao aun .ou Gz axes rsawmn Amon uo mor xao c omawp C2 wa C3 C4 c9 Swnm wr4aawn C6 am a C, ca mua mw LI Lt miaa Pt-rvnewnsr+snox P2 nuim wwx - rsuo ro mmr �+u Wmwrz �) PJ P4 waa rpwx neami no upa asoR.111Px wa PS mw E1 EI mrmrz wx - n¢nrr .xo uanw rsiw uo EJ oawu sc�auu ao mus GENERAL DRAWINGS ABBRMATION LIST DOYgert Elmim w s DUYG IIIf MR WIT w VNIY Wr o art ar .Dulm. M.V.YW.NI N .D[rlw PIXZ a awY W .. norD Ni KmwA wi DYIDx .A mx rt wAq uY M Dlnwm DTD mMart Tia1Z IYOA PW WIK. 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SEEDED MEAS SH&L RECIM 6' DEPTH OF TOPSOIL ins-rr q re[ MIYIYW NM .W WIYY YtlIR 1] �. tl m 1 .v .e xf ♦/n s�uawowmn v .e a wm reaewnvcwu wxr - x. v .e m uoom wN w-r-u.w v �. a a rv.xua - .rrc v a n a rum ns wm wm w-r-c.w v a m sow wrw-w Nm .L ww .vwem uoeRi vaa wra r� - uww .' ouuszw z o snm wxmn ae. (mmn.� v rz a sig snm ranvw mu pmrx) v u m su ruu sow ruxa uwnc - m v a a wuvs uuzu/.au - m� www v rs a t vna Nvm ROOF/BOWL ORIENTATION PLAN NUPPER ER ORIENTATION PLAN N cN i N MLNIAII i. sow mzo � ems zorrtn iwo rur rwr Or norcax roz oaR. r� v � v maP v le m 1g oowlw.lme cM.ar uc vlew I n we emalsll w xMwwe wri. p w IiI wbY el t. yy n0 w m 1141 �n ;y\ ROOF/BOWL ORIENTATION PIAN /moo\ BOWL/PILLAR ORIENTATION PIAN IY PPJAR ORIENTATION PLAN y��L1t yWpl w,ip Mrn MCIIgNMWu Wlf - IY Il M m x.eonu v .e m nems r.xmn w wa - r wM eoe. -w vum nxn Irms �Moal v'. m e Ma .r w w saes Hones ya�..vl w v la m calm Mrc v le m rMM wM - .• 4Pe p. 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LOGO ORIENTATION PLAN IY LOGO ORIENTATION DEVELOPNENf T191CAL FIEVATION Iwrz imn wee m ivuw mo �rc rw� m rmami ra awih k rw YY m lvc .m loo .wurlm uw.Yw.In YYNP ma u. a. an roarY AOIIII /J I[f4.W6 YO MIO YF YWq A WKI[II.T YY a — W • .• nvrtYY� l MMMY MR MR - R OrY 6TW W WRM �� � COIICP[I[ SW MIIY IIgt66) %A1 HANDRAIL DETAIL �1 HANDRAIL BASE PLATE DETAIL iC1 DRYWELL ACCESS TUBE DEVIL D SEALED FLOOR SLEEVE DETAIL I — NRIE Pa snu: Naec -- Pa a * NOR — n acne NOIR . 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L._._ 13a 3333 I 6 yy yy y gooi � ■ Y i w z aSa I w apn-. t11Nlo Z �a• aa Yo -1 lrp�l-� (r 0 O i v fF 33 i a 9F8�44�$ e.w.s I � � u I Q w z I w apn-. t11Nlo Z �a• Yo -1 lrp�l-� (r 0 O i --- .—._ _._._._ - e.w.s PROPOSED MOTION: "The Chanhassen Planning Commission recommends that City Council approve the Site Plan for a water tower located at Minnetonka Middle School West, plans prepared by SEH dated February 22, 2011, subject to the conditions of the staff report; and adoption of the findings of fact and recommendation." SUMMARY OF REQUEST: The developer is requesting Site Plan Review for construction of a water tower. p�[ LOCATION: 6421 Hazeltine Boulevard (Minnetonka Middle School West site) APPLICANT: City of Chanhassen 7700 Market Blvd. Chanhassen, MN 55317 (952)227-1169 Mehme(a)ci.chanhassen.mn.us PRESENT ZONING: OI, Office Institutional 2020 LAND USE PLAN: Public/Semi-Public ACREAGE: 30.7 acres LEVEL OF CITY Independent School District #276 5621 County Road 101 Minnetonka, MN 55345 (952)401-5024 IN DECISION-MAKING: The City's discretion in approving or denying a site plan is limited to whether or not the proposed project complies with Zoning Ordinance requirements. If it meets these standards, the City must then approve the site plan. This is a quasi-judicial decision. PROPOSAL/SUMMARY The City of Chanhassen is requesting site plan approval to construct a 750,000 gallon water tower on the Minnetonka Middle School West site. Utility services are a permitted use on the site. The water tower will be located in the extreme southwest corner of the property between the school building and the south and west property lines. To the south of the tower are single-family homes. West of the tower is the right-of-way for Highway 41. The proposed water tower provides the storage capacity needed within the high-pressure zone in the City. Planning Commission Water Tower Site Plan — Planning Case 2011-05 June 21, 2011 Page 2 of 8 This site was evaluated along with five other locations for the high zone water tower and was determined to be the best location. In November 2008, the city completed an update to the Comprehensive Water Plan. As part of the plan, a storage analysis was performed that recommended additional storage be constructed in the existing high service zone. The high zone water area has seen significant growth in recent years, which has driven the need for additional storage capacity. The city has two main pressure zones. The low zone area services about 88% of the current city demand. Two water towers service this area along with the east water treatment plant. The high zone area is serviced by two wells and a 200,000 Melody Hill Tank located next to Minnetonka Middle School West. The tower was constructed in 1971. The population of Chanhassen in 1970 was 4,875. Today the population of Chanhassen is 22,952. The high zone is mainly in a residential service area which has seen significant growth in the past 15 years. Currently, the demand in the high zone area can be as little as 100,000 gallons a day during the winter months and as much as 1,800,000 during peak summer time usage (2007). Since the high zone does not have much storage capacity, during high demand periods the tank cycles continuously, which causes many problems. The high cycling causes condensation to form on the tank which accelerates tank corrosion. The continuous cycling also puts additional stress on pumps and motors needed to supply the tower and is a very inefficient way to supply water. Also, the undersized storage facility leaves little time for utility staff to respond to power outages and start auxiliary power generation. in addition, the tank at this time is undersized for fire flow design. One of the most critical roles that a water distribution system provides, especially in urban areas, is fire protection. The Insurance Services Office (ISO) provides a score for municipalities based on their ability to meet industry standards for required fire flow based on building size, occupancy class, construction type, etc. Lower scores indicate better ability of systems to suppress fires and typically result in lower insurance rates for commercial and industrial property. The standard required available fire flow that ISO has is 3,500 gpm for 3 hours. Since this is mostly a residential area and all the commercial buildings are sprinkled, the fire marshal recommends using a 2,750 gpm for two-hour fire flow. Water storage capacity should be adequate to sustain normal system demands as well as fire protection operations. The existing Melody Hill Tank is not capable of providing 2,750 gpm as recommended. In addition, the amount of storage required to provide two hours of 2,750 gpm of available fire flow for fiill build -out is shown to be approximately 725,000 gallons. This volume gives the city capacity to supply a 2,750 gpm fire flow rate for two hours while concurrently meeting projected maximum day demands on the system. The standard tank size for this demand is 750,000 gallons. Staff is recommending approval of the site plan for a 750,000 gallon water tower subject to the conditions of this report. Planning Commission Water Tower Site Plan — Planning Case 2011-05 June 21, 2011 Page 3 of 8 APPLICABLE REGUATIONS Chapter 20, Article II, Division 6, Site Plan Review Chapter 20, Article XXI, "OP' Office and Institutional District BACKGROUND On January 24, 2011, the Chanhassen City Council approved an interim use permit to permit site grading for the tennis courts at Minnetonka Middle School West (Planning Case #2011-01). On February 27, 2006, the Chanhassen City Council approved Interim Use Permit #2006-03 to permit the grading of approximately 3,400 cubic yards for an infiltration basin and drainage swales to reduce downstream erosion and sedimentation along Highway 41 (Planning Case #2006-03). On June 9, 2003, the Chanhassen City Council approved Interim Use Permit #2003-02 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. GENERAL SITE PLAN/ARCHITECTURE The height of the 750,000 gallon water tower is approximately 170 feet to the very top of the tower. Besides the tower, site improvements include a bituminous driveway and fencing around tank; grading of the site to raise the location of the proposed tower to reduce the height of the tower; relocation of the storm water retention pond; relocation of stone water piping/outlet structure; relocation of water service to the school building; relocation of approximately 500 feet of overhead power lines; and installation 200 feet of 16 -inch water main to TH 41. The tank bowl will be a steel shell painted sky blue to minimize the visual impact of the structure with the green Chanhassen Maple Leaf. The tank diameter is 60 feet. The pedestal will either be a steel shell painted sky blue or a composite concrete material that will be stamped with architectural patterns to mimic blocks or brick. The pedestal diameter shall be 28-32 feet. LIGHTING/SIGNAGE Lighting shall be limited to requirements of the Federal Aviation Administration and a single light above the overhead door. The light fixture shall have a 90 - degree cut-off angle and be shielded from off-site view. The only signage on the water tower will be the Chanhassen Maple Leaf. Planning Commission Water Tower Site Plan — Planning Case 2011-05 June 21, 2011 Page 4 of 8 FX1Ky DbIM Access to the proposed water tower will be by the existing middle school access on the east side of Highway 41. A 12 -foot wide driveway is proposed from the southwest side of the existing pavement. EROSION CONTROL 1. If the total disturbance exceeds one (1) acre in area, an NPDES General Stormwater Permit for Construction Activities will be needed from the MPCA. 2. If an NPDES Permit is needed, a Storm Water Pollution Prevention Plan (SWPPP) will need to be prepared and submitted for review and the conditions of the permit must be met. 3. The outlet to the right-of-way for Minnesota Trunk Highway 41 will need to be stabilized immediately upon connection. 4. The pond must be protected from sedimentation to the greatest extent practicable during construction and all sediment deposited during construction must be removed to return the pond to the design conditions. A record drawing shall be prepared showing this condition has been met. 5. The plan must address the comments from the Carver County SWCD. STORM WATER MANAGEMENT The proposed conditions will result in a decrease in runoff rate for the 2, 10 and 100 -year events and an increase in total phosphorus and suspended solids removal. 2. The underdrain bedding material shall be washed river rock wrapped in a high-flow filter fabric. 3. According to the Carver County Soil Survey and double ring infiltrometer tests performed by the School District, this site may well be conducive to infiltration. To this end an additional hold down should be constructed below the underdrain such that the feature is a filtration/partial recharge feature as described in the Minnesota Stormwater Manual. 4. Eliminate CBMH 109 and bulkhead the outlet from the upstream structure to the west. Move CBMH 107 to the east into the location of the existing manhole. Replace this structure as needed and outlet to the pond. The end result will be a single outlet point into the first cell near the pinch point of the 1035 -foot contour. Based on the consultants calculations, over 5,000 cubic yards of loose material will be cut from the site, with almost 2,900 cubic yards of loose material being filled within the site. Excess Planning Commission Water Tower Site Plan — Planning Case 2011-05 June 21, 2011 Page 5 of 8 material will be removed from the site. Haul routes must be established for the trucking of material off the site. A tiered retaining wall system is proposed on the west side of the proposed tower. A building permit is required for the retaining walls since they will be at least four feet high. The retaining walls must be designed by an engineer registered in the State of Minnesota. The following additional information must be shown on the grading plan: a) Show the top and bottom of wall elevations. b) Provide more spot elevations along the driveway and the area to the north of the driveway, ensuring that minimum I% grade is achieved on paved surfaces and minimum 2% grade is achieved in the green area. LANDSCAPING/TREE PRESERVATION There are existing trees at the edge of the grading limits that are proposed to be preserved. Staff recommends that tree protection fencing be installed at the edge of the grading limits. MISCELLANEOUS A building permit is required. Geotechnical investigation and report required. All plans must be prepared and signed by design professionals licensed in the State of Minnesota. Portions of retaining wall(s) exceeding four feet in height must be professionally designed. The owner and/or their representative shall meet with the Inspections Division to discuss plan review and permit procedures. UTILITIES Some private storm sewer and sanitary sewer lines must be relocated due to the proposed grading. A plumbing permit is required for the proposed sewer relocations. A 16 -inch trunk watermain is proposed between the new water tower and the existing trunk watermain within the east side of the Highway 41 right-of-way. Contact the Utility Department at 952-227-1300 a minimum of 48 hours before tapping into the existing watermain. MnDOT permits are required for the installation of the proposed watermain and storm water pond outlet pipe. Planning Commission Water Tower Site Plan — Planning Case 2011-05 June 21, 2011 Page 6 of 8 COMPLIANCE TABLE Building Height Building Setback OI WATER TOWER Water Towers are exempt from the district height requirements pursuant to Section 20-907 (b) (1) of the Chanhassen City Code. Hard Surface Coverage Lot Area RECOMMENDATION W -35'S-15' 65% 0.344 acre W -40'S-41' 33% 30.7 acres Staff recommends that the Planning Commission recommend approval of the site plan subject to the conditions of the staff report and adoption of the attached findings of fact and recommendation. The recommended conditions of approval are as follows: 1. The pedestal shall be painted sky blue if a steel shell, or if constructed of a composite concrete material shall be stamped with architectural patterns to mimic block or brick. 2. The light fixture shall have a 90 -degree cut-off angle and be shielded from off-site view. 3. Haul routes must be established for the trucking of material off the site. 4. A building permit is required for the retaining walls since they will be at least four feet high. 5. The retaining walls must be designed by an engineer registered in the State of Minnesota. 6. The following additional information must be shown on the grading plan: a) Show the top and bottom of wall elevations. b) Provide more spot elevations along the driveway and the area to the north of the driveway, ensuring that minimum 1% grade is achieved on paved surfaces and minimum 2% grade is achieved in the green area. 7. A plumbing permit is required for the proposed sewer relocations. 8. Contact the Utility Department at 952-227-1300 a minimum of 48 hours before tapping into the existing watermain. 9. MnDOT permits are required for the proposed watermain and storm water pond outlet pipe. Planning Commission Water Tower Site Plan — Planning Case 2011-05 June 21, 2011 Page 7 of 8 10. Tree protection fencing shall be installed at the edge of the grading limits. 11. A building permit is required. 12. Geotechnical investigation and report required. 13. All plans must be prepared and signed by design professionals licensed in the State of Minnesota. 14. Portions of retaining wall(s) exceeding four feet in height must be professionally designed. 15. The owner and or their representative shall meet with the Inspections Division to discuss plan review and permit procedures. 16. If the total disturbance exceeds one (1) acre in area an NPDES General Stormwater Permit for Construction Activities will be needed from the MPCA. 17. If an NPDES Permit is needed, a Storm Water Pollution Prevention Plan will need to be prepared and submitted for review and the conditions of the permit must be met. 18. The outlet to the right-of-way for MN Trunk Highway 41 will need to be stabilized immediately upon connection. 19. The pond must be protected from sedimentation to the greatest extent practicable during construction and all sediment deposited during construction must be removed to return the pond to the design conditions. A record drawing shall be prepared showing this condition to be met. 20. The plan must address the comments from the Carver County SWCD. 21. The proposed conditions will result in a decrease in runoff rate for the 2, 10 and 100 -year events and an increase in total phosphorus and suspended solids removal. 22. The underdrain bedding material shall be washed river rock wrapped in a high-flow filter fabric. 23. According to the Carver County Soil Survey and double ring infiltrometer tests performed by the School District, this site may well be conducive to infiltration. To this end an additional hold down should be constructed below the underdrain such that the feature is a filtration/partial recharge feature as described in the Minnesota Stormwater Manual. 24. Eliminate CBMH 109 and bulkhead the outlet from the upstream structure to the west. Move CBMH 107 to the east into the location of the existing manhole. Replace this structure as needed and outlet to the pond. The end result will be a single outlet point into the first cell near the pinch point of the 1035 -foot contour. Planning Commission Water Tower Site Plan — Planning Case 2011-05 June 21, 2011 Page 8 of 8 ATTACHMENTS 1. Findings of Fact and Recommendation. 2. Reduced Copy Title Sheet. 3. Reduced Copy Existing Conditions. 4. Reduced Copy Grading Plan. S. Reduced Copy Erosion Control Plan. 6. Reduced Copy Removals. 7. Reduced Copy Site and Utility Improvements. 8. Reduced Copy Details. 9. Reduced Copy Project Location. 10. Letter from Chip Hentges (Carver Soil and Water Conservation District) to Robert Generous dated June 7, 2011. 11. Public Hearing Notice and Mailing List. 9:\plan\2011 planning cases\l 1-05 water tower site plan\statrreport water tower.doc CITY OF CHANHASSEN CARVER AND HENNEPIN COUNTIES, MINNESOTA FINDINGS OF FACT AND RECOMMENDATION Application of the City of Chanhassen and Independent School District #276, for Site Plan Review for a 750,000 -gallon, 170 -foot tall water tower in the Office Institutional District (OI). On June 21, 2011, the Chanhassen Planning Commission met at its regularly scheduled meeting to consider the application of the City of Chanhassen and Independent School District #276 for Site Plan review for a 750,000 -gallon, 17 -foot tall water tower for property located at 6421 Hazeltine Boulevard. The Planning Commission conducted a public hearing on the site plan 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 1. 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: See attached Exhibit A 4. Site Plan Findings: a. The proposed development is consistent with the elements and objectives of the City's development guides, including the comprehensive plan, official road mapping, and other plans that may be adopted; Finding: The development of the site is consistent with the City's development guides and comprehensive plan. b. The proposed development is consistent with the site plan review requirements; Finding: The site is consistent with the site plan review requirements and complies with all zoning code requirements. c. The proposed development preserves the site in its natural state to the extent practicable by minimizing tree and soil removal and designing grade changes to be in keeping with the general appearance of the neighboring developed or developing or developing areas; Finding: The propose tower is in a location that has previously been altered with the development of the site. The proposed development is in keeping with the general appearance of the neighboring developed or developing areas. The proposed development will improve surface water treatment of run-off. d. The proposed development creates a harmonious relationship of building and open space with natural site features and with existing and future buildings having a visual relationship to the development; Finding: The development will be harmonious with the existing site buildings and features. e. The proposed development creates a functional and harmonious design for structures and site features, with special attention to the following: 1) An internal sense of order for the buildings and use on the site and provision of a desirable environment for occupants, visitors and general community; Finding: The proposed expansion is in a logical and practical location on the site. 2) The amount and location of open space and landscaping; Finding: The proposed tower is located in a location that was previously altered. 3) Materials, textures, colors and details of construction as an expression of the design concept and the compatibility of the same with adjacent and neighboring structures and uses; and Finding: The proposed tower will be in keeping with the existing building. 4) Vehicular and pedestrian circulation, including walkways, interior drives and parking in terms of location and number of access points to the public streets, width of interior drives and access points, general interior circulation, separation of pedestrian and vehicular traffic and arrangement and amount of parking. Finding: Access to the site shall remain as exists. Parking areas and circulation comply with code requirements. 5) Protects adjacent and neighboring properties through reasonable provision for surface water drainage, sound and sight buffers, preservation of views, light and air and those aspects of design not adequately covered by other regulations which may have substantial effects on neighboring land uses. Finding: Surface water is being directed to an improved storm water system. The tower is located in a logical location on the site. 5. The planning report, Planning Case #11-05 dated June 21, 2011, prepared by Robert Generous, et al, is incorporated herein. RECOMMENDATION The Planning Commission recommends that the City Council approve Planning Case #2011-05 for Site Plan approval for a 750,000 -gallon, 170 -foot tall water tower on property located at 6421 Hazeltine Boulevard. ADOPTED by the Chanhassen Planning Commission this 21" day of June, 2011. CHANHASSEN PLANNING COMMISSION BY: Its Chairman EXHIBIT A LEGAL DESCRIPTION The Southwest Quarter (SW 1/4) of the Northwest Quarter (NW 1/4) of Section Three (3), Township One Hundred Sixteen (116), Range Twenty Three (23) West, according to the U. S. Government Survey thereof, excepting therefrom the 35/100ths acres conveyed by deed recorded in the office of the Register of Deeds of Carver County, Minnesota, in Book S of Deeds, page 400, and that part thereof conveyed by deed recorded in the office of the Register of Deeds of Carver County, Minnesota, in Book 41 of Deeds, page 322, and subject to the right, title and interest of the State of Minnesota in that strip of land conveyed by deed recorded in the office of the Register of Deeds of Carver County, Minnesota, in Book 33 of Deeds, page 25. Also that part of Lot E, Bardwell Acres, not conveyed by said deed recorded in the office of the Register of Deeds of Carver County, Minnesota, in Book 41 of Deeds, page 322. Subject to a permanent easement for roadway purposes as recorded in the office of the Register of Deeds of Carver County, Minnesota, in Book 64 of Deeds, page 32. 750,000 GALLON WATER TOWER FOR THE CITY OF CHANHASSEN, MINNESOTA PROJECT LOCATION CRY OF CHMIIUSSEN r + i7 N �o noNo�uR P r N a/ MINNETONKA MIDDLE SCHOOL WEST 3r I.S.D. 276 NOS yr \ C .AV 12 PVC US FIM 10\ \ (APVROX) .NV 103737 21 .21E)) \ \ NV 1067.1(N) \ p� o rvo 1041 3F \ V v ' NV INV a 5:7��; � opo � INb 1�b585 V. mb.3 \ 12 'CLAY r n�- / h� r - FE: A \ RIM=1041 4 INV=1038.7 NW PyC_� INV tc353 v A INV-103&2 NE)) INV=i 038.0 E/.) 1 ! \ \ INV=10329 w) m m ! r FP, INV- 05 \\ AL18'CPP _12 RCP E -- RIM 10341 ` —.—,-- ' INV 10i19(0(Ej\ RIM 1042.80)) —— _ . INV 103l(vp 103 ( INV _ - 1038 INV-1037.9(W)INV RIV-044 70 iD38 7(N/E) INV=1038.5(W) a MINNETONKA MIDDLE SCHOOL WEST LS. 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COMPOSfOiOP9gL %t 1 POND BOTTOM TYPICAL CROSS-SECTION ceoo �� Nrs OLiMgOW EtHMId I.i 101110 MEcnn onN.c roa lr Pvc N. •1wx' Kt.LASINGPALE CPE AL rPPECnM.F'Fpnto ��n W ( 2 ) OUTLET STRUCTURE DETAIL ceao NTS wrGE frvcwEMEp saL 6' Lnz. EonGM nl loaao wGrtert . wEu eLexpEp Mmwf nr wwm.. FASnMMEPING MN/ppi]IE9.L'lMf F ]ef OPGI.NC tFAf COMPOZI MEFNG Mn yN.Y GPnpF 1zi3nWY LOAM IryFgL .1 ENG1lR pSOL ni 1.] IU mlwu II W, LWENI lllEE 1111. 'i.onwa iLEP (NIIfOF. 51PI1l NIM CLEI.ry MEGA' OPEN.. FJ .1K .Y.I.,. IAVD p� wnn s i - MTER 9 PIOECr wGror/ o.w nn aoiny I I �,FM cum"M'_ e CARVER June 7, 2011 NSERVATION DISTRICT .4"09 Co pi. y 1946 A0 417ty 11360 Hwy.212 Suite 6 Colgone, MN 55322 Phone 952-466-5230 httu://www.co.carver.mn.us/SWCD/SWCD main.html Mission Statement. To provide leadership in conservation and teach stewardship of the soil, water, and related resources through a balanced, cooperative program that protects, restores. and improves those resources. Robert Generous, Senior Planner City of Chanhassen 7700 Market Boulevard Chanhassen, MN 55317 Re: Water Tower project The SWCD has reviewed the above mentioned preliminary development plan for erosion and sediment controls and water quality benefits. Following you will find my comments: -A National Pollution Discharge Elimination System permit will be required for this development. -The General Contractor who has overall charge of day to day operations needs to be on the NPDES Permit as the contractor. The Owner and or General Contractor have the responsibility for the NPDES permit, not the grading contractor. The owner must have an individual qualified to complete stormwater inspections. A box will need to be placed on site for these specific documents, and or kept in the project office. The Carver SWCD will be completing inspections of the rules of the NPDES permit and city ordnances to see if the owner and or contractor are in compliance with the permit. This permit is a self maintained permit. Guidelines of the permit can be found at the following web site: http://www.pca.state.mn.us/water/stormwater/stormwater-c.html A Stormwater Pollution Preventive Plan (SWPPP) will need to be developed for this site as it will have over 1- acre of disturbance. General Comments: - The existing drainage from the 5+ acres of mostly impervious surfaces is very flashy and has caused sever erosion issues in the past at this site. The SWPPP will need to address how the construction of the water tower and the building of the new stormwater pond will be sequenced in order to handle the existing stormwater that drains to this spot. A plan will need to be developed AN EQUAL OPPORTUNITY EMPLOYER - that lays out the proper sequencing for the contractor to implement to create a protection for them and the city, as the downstream receiving waters is a shallow lake. - Perforated pipe needs to be documented. If drain tile will be PVC, the PVC pipe will need have additional holes drilled on site to meet the requirements of a typical plastic drain tile, and or order the equivalent. Traditional PVC drain tile only has holes drilled at the 4 — 8 o'clock. Perforated drain tile should be placed off the bottom at an elevation of 1033.5 to allow for volume water retention storage for plants. The information I received did not have planting materials and I'm assuming the plants will be water loving plants that can handle both wet and dry conditions. If this is the case, by placing the tile on the bottom, conditions of the filtration media will become quite dry, verses placing the tile about a foot off the bottom. The perforated tile should be placed in washed river rock and or equivalent instead of washed sand. Please include me with any correspondences of changes to this original concept plan, and also of any pre - construction meetings prior to start of construction. Sincerely, Chip Hentges CPESC Conservation Technician 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 June 9, 2011, 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 the Water Tower Site Plan Review — Planning Case 2011-05 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 sworn to before me this (Dtday of --:I-Lk rN2 12011. t 1 Notary Wil I='V, %. .��r„ ,De�,',?.y Clerk JJEKIM T. MEUWISSENry Public-MinnesotaCommlceion Explree Jen 31, 2015 Notice of Public Hearing Chanhassen Planning Commission Meeting Date & Time: Tuesday, June 21, 2011 at 7:00 P.M. This hearing may not start until later in the evening, depending on the order of theagenda. Location: City Hall Council Chambers, 7700 Market Blvd. Proposal: Request for Site Plan Review for construction of a water tower on property zoned Office Institutional OI . on property zoned Office Institutional OI . Applicant: City of Chanhassen Property 6421 Hazeltine Boulevard (Minnetonka Middle School West) Location: A location map is on the reverse side of this notice. The purpose of this public hearing is to inform you about the The purpose of this public hearing is to inform you about the applicant's request and to obtain input from the neighborhood applicant's request and to obtain input from the neighborhood about this project. During the meeting, the Chair will lead the about this project. During the meeting, the Chair will lead the What Happens public hearing through the following steps: 1. Staff will give an overview of the proposed project. 1. Staff will give an overview of the proposed project. at the Meeting: 2. The applicant will present plans on the project. 3. Comments are received from the public. 3. Comments are received from the public. 4. Public hearing is closed and the Commission discusses 4. Public hearing is closed and the Commission discusses the project. the pr9ject. If you want to see the plans before the meeting, please visit If you want to see the plans before the meeting, please visit the City's projects web page at: the City's projects web page at: www.ci.chanhassen.mn.us/serv/i)lan/11-05.html. If you wish to www.ci.chanhassen.mn.us/serv/plan/11-05.html. If you wish to talk to someone about this project, please contact Bob talk to someone about this project, please contact Bob Questions & Generous by email at boenerous62)ci.chanhassen.mn.us or by phone at 952-227-1131. If you choose to submit written phone at 952-227-1131. If you choose to submit written Comments: comments, it is helpful to have one copy to the department in advance of the meeting. Staff will provide copies to the advance of the meeting. Staff will provide copies to the Commission. The staff report for this item will be available Commission. The staff report for this item will be available online on the project web site listed above the Thursday online on the project web site listed above the Thursday prior to the Pla ning Commission meeting. 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 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, please contact the Planning Staff person named on the notification. Notice of Public Hearing Chanhassen Planning Commission Meeting Date & Time: Tuesday, June 21, 2011 at 7:00 p.m. This hearing may not start until later in the evening, depending on the order of theagenda. Location: City Hall Council Chambers, 7700 Market Blvd. Request for Site Plan Review for construction of a water tower Proposal: on property zoned Office Institutional OI . Applicant: City of Chanhassen Property 6421 Hazeltine Boulevard (Minnetonka Middle School West) 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 What Happens public hearing through the following steps: 1. Staff will give an overview of the proposed project. at the Meeting: 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 visit the City's projects web page at: www.ci.chanhassen.mn.us/serv/i)lan/11-05.html. If you wish to talk to someone about this project, please contact Bob Questions & Generous by email at bbc enerous(cDci.chanhassen.mn.us or by phone at 952-227-1131. If you choose to submit written Comments: 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 on the project web site listed above the Thursday prior to the Pla ning 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 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, please contact the Planning Staff person named on the notification. Disclaimer This map is neither a legally rewrded map nor a survey and is not intended to be used as one. This map is a compilation of records, information 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 only. The City does not warrant that the Geographic Information System (GIS) Data used to prepare this map are error free, and the City does not represent that the GIS Data can be used for navigational, tracking or any other purpose requiring exacting measurement of distance or direction or precision in the depiction of geographic features. If erom or discrepancies are found please 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 be liable for any damages, and expressly waives all claims, and agrees to defend, indemnify, and hold harmless the City from any and all claims brought by User, its employees or agents, or third parties which arse out of the users access or use of data provided. This map is neither a legally recorded map nor a survey and is not intended to be used as one. This map is a compilation of records, information 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 only. The City does not warrant that the Geographic Information System (GIS) Data used to prepare this map are error free, and the City does not represent that the GIS Data can be used for navigational, tracking or any other purpose requiring exacting measurement of distance or direction or precision in the depiction of geographic features. If erors or discrepancies are found please 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 be liable for any damages, and expressly waives all claims, and agrees to defend, indemnify, and hold harmless the City from any and all claims brought by User, its employees or agents, or third parties which arse out of the users access or use of data provided. BEN & MARGARET LIAO BENJAMIN H & HIDEKO GOWEN BEULAH S BAER 3645 FORESTVIEW LN 6440 HAZELTINE BLVD 6300 CHASKA RD PLYMOUTH MN 55441-1336 EXCELSIOR MN 55331-8049 EXCELSIOR MN 55331-8825 BRIAN D & KRISTINE V MCMENAMIN 6393 MELODY LN EXCELSIOR MN 55331-6405 BRYAN P & ELIZABETH WUTZKE 2280 MELODY HILL RD EXCELSIOR MN 55331-8891 CHARLES G GOERS SR REV TRUST 2160 MURRAY HILL CT EXCELSIOR MN 55331-8882 CHARLES R & KATHLEEN J MOWREY 367 SANTANA HTS SAN JOSE CA 95128-2074 CINDY TELLINGHUISEN 6370 MURRAY HILL RD EXCELSIOR MN 55331-8834 DAMON M & NANCY M JOHNSON 6366 MELODY LN EXCELSIOR MN 55331-6402 DAVID L & HOLLY J JESSEN 6618 BRENDEN CT CHANHASSEN MN 55317-7560 DENNIS M & JOAN E CLARK 6651 HAZELTINE BLVD EXCELSIOR MN 55331-8039 BRIAN L & TONYA M Z GABBARD 6444 MURRAY HILL RD EXCELSIOR MN 55331-8994 CAROL ASLESEN CHILD 6482 MURRAY HILL RD EXCELSIOR MN 55331-8994 CHARLES R & BEVERLY J JACKSON 2110 CRESTVIEW DR EXCELSIOR MN 55331-8009 CHRISTOPHER M JERDEE 2081 65TH ST W CHANHASSEN MN 55317-9006 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JEFFREY A & CHRISTINA M JEFFREY WIRTH JOHN D & KATHRYN D DESMET 63 6486 MURRAY HILL RD 6454 MURRAY HILL RD 636611 MELODY LN EXCELSIOR MN 55331-6405 EXCELSIOR MN 55331-8994 EXCELSIOR MN 55331-8994 JOHN J & LYNNETTE J DELUCA JOHN K BROOKS JOSEPH R COOK 6484 MURRAY HILL RD 2151 PINEHURST DR 6672 BRENDEN CT EXCELSIOR MN 55331-8994 CHANHASSEN MN 55317-4579 CHANHASSEN MN 55317-7560 JUNIE M HOFF-GOLMEN KEITH K & CHRISTINE M CLARK KEVIN J DEGEL 2220 MELODY HILL RD 6620 CHESTNUT LN 6610 CHESTNUT LN EXCELSIOR MN 55331-8891 CHANHASSEN MN 55317-4580 CHANHASSEN MN 55317-4580 LECY BROTHERS CONSTRUCTION LEIF W OLSEN LEIGH STOCKER BERGER INC 2150 PINEHURST DR 2140 PINEHURST DR 15012 HIGHWAY 7 MINNETONKA MN 55345-3634 CHANHASSEN MN 55317-4579 CHANHASSEN MN 55317-4579 LESLIE A POLTRACK LYNDA M KUZMA MARK L & CAROL J RIESE 164 DOUD DR 2241 SOMMERGATE 6320 MURRAY HILL RD LOS ALTOS CA 94022-2369 EXCELSIOR MN 55331-8800 EXCELSIOR MN 55331-8834 MARK LUEKING MARK S & LORENA M FLANNERY MATTHEW ALLAN KLOSKOWSKI 6378 MELODY LN 2350 MELODY HILL RD 6287 CHASKA RD EXCELSIOR MN 55331-6402 EXCELSIOR MN 55331-8893 EXCELSIOR MN 55331-8824 MATTHEW M QUINN MATTHEW R HANSON MICHAEL C &MARGARET L 6604 ALDER WAY 5775 SMITHTOWN WAY 2191 SO R TE CHANHASSEN MN 55317-4581 EXCELSIOR MN 55331-4401 2191 EXCELSIOR N 553 EXCELSIOR MN 55331-8917 MICHAEL C TOBIN MICHAEL D & DEBRA H ANDERSON MICHAEL D & KARA S TILDEN 6377 MELODY LN 6681 AMBERWOOD LN 6390 MELODY LN EXCELSIOR MN 55331-6405 CHANHASSEN MN 55317-4582 EXCELSIOR MN 55331-6402 MICHAEL D ANDERSON MICHAEL L & AMY C DEGENEFFE MICHELLE M CURTIS 6681 AMBERWOOD LN 6654 BRENDEN CT 2446 64TH ST W CHANHASSEN MN 55317-4582 CHANHASSEN MN 55317-7560 EXCELSIOR MN 55331-8808 MYKE L & LYNN S MILLER NANCY JO PERKINS-BROOKS PAUL J & JUDITH A POITEVENT 6405 MELODY LN 2448 64TH ST W 2300 MELODY HILL RD EXCELSIOR MN 55331-6404 EXCELSIOR MN 55331-8808 EXCELSIOR MN 55331-8893 PAUL J & KRISTI L BORCHERT PERRY C HARRISON PINEHURST PARTNERS LLC 6636 BRENDEN CT 2221 SOMMERGATE 1851 LAKE DR W #550 CHANHASSEN MN 55317-7560 EXCELSIOR MN 55331-8800 CHANHASSEN MN 55317-8567 RICHARD & BARBARA D ATHERTON 2082 65TH ST W EXCELSIOR MN 55331-9005 RICHARD E & KAREN HERRBOLDT 2040 W WAYZATA BLVD APT 201 LONG LAKE MN 55356-5607 ROBERT E LEE III 4655 HERITAGE HILLS CIR MINNEAPOLIS MN 55437-2855 SCOTT THOMAS HOHAG 6488 MURRAY HILL RD EXCELSIOR MN 55331-8994 STEVEN P & KIMBERLY A LATTU 2181 CRESTVIEW DR EXCELSIOR MN 55331-8010 THOMAS & MARY KUHN 6693 BRENDEN CT CHANHASSEN MN 55317-7560 THOMAS J & REBECCA J HAGEN 6633 BRENDEN CT CHANHASSEN MN 55317-7560 U S HOME CORP (DBA/LENNAR) 16305 36TH AVE N STE 600 PLYMOUTH MN 55446-4270 WILLIAM DOUGLAS HILE 2151 CRESTVIEW DR EXCELSIOR MN 55331-8010 RICHARD D & JOYCE H MCFARLAND 6341 MURRAY HILL RD EXCELSIOR MN 55331-8832 ROBERT & JERI LOU PRCHAL 2150 MURRAY HILL CT EXCELSIOR MN 55331-8882 ROR INC 2461 64TH ST W EXCELSIOR MN 55331-8809 SEV41 LLC 601 MARQUETTE AVE STE 100 MINNEAPOLIS MN 55402-1707 STEVEN S & LORI A ABBLETT 2081 CRESTVIEW DR EXCELSIOR MN 55331-8008 THOMAS & VIRGINIA A RODE 6275 CHASKA RD EXCELSIOR MN 55331-8824 TIMOTHY P & HEIDI S LARKIN 2150 CRESTVIEW DR EXCELSIOR MN 55331-8009 WAYNE PETERSON 2444 64TH ST W EXCELSIOR MN 55331-8808 WILLIAM O & KRISTEN K FLANAGAN 6653 BRENDEN CT CHANHASSEN MN 55317-7560 RICHARD D BLISS 6400 MELODY LN EXCELSIOR MN 55331-6403 ROBERT A JR & BRENDA K NESS 2121 CRESTVIEW DR EXCELSIOR MN 55331-8010 RYAN J SCHAFER 6464 MURRAY HILL RD EXCELSIOR MN 55331-8994 SPENCER L GOLDSMITH 2231 SOMMERGATE EXCELSIOR MN 55331-8800 TAMARA M PETERSON -CAMPBELL 6613 BRENDEN CT CHANHASSEN MN 55317-7560 THOMAS G & NEYSA L WINTERER 2210 MELODY HILL RD EXCELSIOR MN 55331-8891 TONKA DEVELOPMENT LLC 18001 HIGHWAY 7 MINNETONKA MN 55345-4150 WELLS FARGO FINANCIAL MINNESOT 8480 STAGECOACH CIR FREDERICK MD 21701-4747 A L PENTEADO III & C J PENTEAD ANTHONY J MILLER BRUCE B & HOLLY H OLSON 10001 INDIGO DR 2444 LAKE LUCY RD 2432 LAKE LUCY RD EDEN PRAIRIE MN 55347-1205 CHANHASSEN MN 55317-2644 CHANHASSEN MN 55317-6707 DON W & CHRISTINE A ANTHONY 6700 BRENDEN CT CHANHASSEN MN 55317-7570 ERIC M & PATRICIA E BURDON 6690 BRENDEN CT CHANHASSEN MN 55317-7560 JAY D COATTA 6729 BRENDEN CT CHANHASSEN MN 55317-7570 MARVIN P & BARBARA A MILLER 2340 LAKE LUCY RD CHANHASSEN MN 55317-7561 STEVEN J PROKOSCH 6732 BRENDEN CT CHANHASSEN MN 55317-7570 E JEROME CARLSON PO BOX 554 WAYZATA MN 55391-0554 GESTACH & PAULSON CONSTRUCTION 200 CHESTNUT ST N CHASKA MN 55318-1920 JOHN G II & BARBARA K JACOBSON 6719 BRENDEN CT CHANHASSEN MN 55317-7570 SALLY ANN BARQUIST 2360 LAKE LUCY RD CHANHASSEN MN 55317-7561 EDWARD & CYNTHIA A BARNOWSKI 2380 LAKE LUCY RD CHANHASSEN MN 55317-7561 HERBERT M & DONNA M HILLMAN 6716 BRENDEN CT CHANHASSEN MN 55317-7570 KIMBERLY K GOERS 6709 BRENDEN CT CHANHASSEN MN 55317-7570 STEPHEN M & HEATHER L PINT 6750 BRENDEN CT CHANHASSEN MN 55317-7570 t. � • ..� its 44 a l- IL F � �� :•. .. 0 F073-PA40A BLUE ILLUSION ENDURA-SHIELD REF: CHANHASSEN WATER TANK This display sample was produced under laboratory conditions and may not always represent the appearance of field applications. Due to adjustments required for a custom match, Tnemec may have to ship ± 10% of the requested gallons. TNEMEC COMPANY, INC., KANSAS CITY, M064120 MEMORANDUM TO: Robert Generous, Senior Planner FROM: Jerritt Mohn, Building Official DATE: June 8, 2011 SUBJ: Site Plan review for: WATER TOWER — Request for Site Plan Review for construction of a water tower. The property is located at 6421 Hazeltine Boulevard (Minnetonka Middle School West site) and is zoned OI, Office Institutional. Applicant: City of Chanhassen. Property Owner: Independent School District #276. Planning Case: 11-05 I have reviewed the plans for the above project received by the Planning Department on May 20, 2011. Following are my comments, which should be included as conditions of approval. 1. A building permit is required. 2. Geo -technical investigation and report required. 3. All plans must be prepared and signed by design professionals licensed in the State of Minnesota. 4. Portions of retaining wall(s) exceeding four feet in height must be professionally designed.. 5. The owner and or their representative shall meet with the Inspections Division to discuss plan review and permit procedures. G/safely/st/memos/plan/buildingotficialcommems.doc Date: May 23, 2011 City of Chanhassen 7700 Market Boulevard P.O. Box 147 Chanhassen, MN 55317 (952)227-1100 To: Development Plan Referral Agencies From: Planning Department Review Response Deadline:: June 10, 2011 By: Robert Generous, Senior Planner, 952-227-1133 Subject: WATER TOWER — Request for Site Plan Review for construction of a water tower. The property is located at 6421 Hazeltine Boulevard (Minnetonka Middle School West site) and is zoned OI, Office Institutional. Applicant: City of Chanhassen. Property Owner: Independent School District #276. Planning Case: 2011-05 PID: 25-0033000 The above-described application for approval of a land development proposal was filed with the Chanhassen Planning Department on May 20, 2011. The 60 -day review period ends July 19, 2011. 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 June 21, 2011 at 7:00 p.m. in the Council Chambers at Chanhassen City Hall. We would appreciate receiving your comments by no later than June 10, 2011. You may also appear at the Planning Commission meeting if you so desire. Your cooperation and assistance is greatly appreciated. 1. City Departments: a. City Engineer b. City Attorney c. City Park Director d. Fire Marshal e. Building Official E 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 7. Carver County a. Engineer b. Environmental Services & 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 Energy or MN Valley) 11. Mediacom 12. CenterPoint Energy Minnegasco 13. Minnetonka School District 276 PID# 250033000 Itila1h Yaw 1111 Eat. Market Valise W: 53348000 Est. Market VWw NoNdIrsg: SI 1138500 Map Created: 134-2816 EsL Market V*MTeeab $14486500 Taxpayer IdorarrWr: IND SCHOOL DIST 276 261 SCHOOL AVE EXCELSIOR, MN 55331 Last Sale Information Last Sale NO"f ON 111 1 CARVER COUNTY GIS DISCLAIMER: This map was creabd using Carver County's Geographic Information Systems IGISI, 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. Legend Parcel lnfonetdon Carter Roto Property Address: 6421 HAZELTINE BLVD EXCELSIOR, MN - crww" Parcel PnPerdn rwnsar Tax Arres: 30.71 /,/ a"arar ScMd District: 027 r'"s"fisr" Pared Lecadon Lobb Seedier 03 ►rats TiswrrW 116 Rath: 023 c4wm Itila1h Yaw 1111 Eat. Market Valise W: 53348000 Est. Market VWw NoNdIrsg: SI 1138500 Map Created: 134-2816 EsL Market V*MTeeab $14486500 Taxpayer IdorarrWr: IND SCHOOL DIST 276 261 SCHOOL AVE EXCELSIOR, MN 55331 Last Sale Information Last Sale NO"f ON 111 1 CARVER COUNTY GIS DISCLAIMER: This map was creabd using Carver County's Geographic Information Systems IGISI, 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. V KIN I Planning Case No. 11-05 CITY OF CHANHASSEN 7700 Market Boulevard — P.O. Box 147 Chanhassen, MN 55317 — (952) 227-1100 DEVELOPMENT REVIEW APPLICATION Applicant Name and Address: City of Chanhassen 7700 Market Boulevard Chanhassen, MN 55317 Contact: Paul Oehme, Public Works Director Phone: 952-227-1169 Fax: 952-227-1170 Email: poehmelabci.chanhassen.mn.us Property Owner Name and Address: Minnetonka School District 276 5621 County Road 101 Minnetonka, MN 55345 Contact: Paul Bourgeois, Exec. Dir. of Finance Phone: 952-401-5024 Fax: 952-401-5032 Email: paul.bourgeois@minnetonka.k12.edu 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 X Site Plan Review (SPR)* Subdivision* Temporary Sales Permit Vacation of Right-0f-Way/Easements (VAC) (Additional recording fees may apply) Variance (VAR) Wetland Alteration Permit (WAP) Zoning Appeal Zoning Ordinance Amendment Notification Sign — $200 (City to install and remove) X Escrow for Filing Fees/Attorney Cost** - $50 CUP/SPRNACNAR/WAP/Metes & Bounds - $450 Minor SUB TOTAL FEE $ 0.00 An additional fee of $3.00 per address within the public hearing notification area will be invoiced to the applicant prior to the public hearing. *Five (5) full-size folded copies of the plans must be submitted, including an 8%" X 11" reduced copy for each plan sheet along with a digital copy in TIFF -Group 4 (*.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. "9 PROJECT NAME: Minnetonka West Water Tower LOCATION: 6421 Hazeltine Boulevard Excelsior, MN 55331 LEGAL DESCRIPTION AND PID: See attached legal description: PID 250033000 TOTAL ACREAGE: WETLANDS PRESENT: YES X NO PRESENT ZONING: OI Office & Institutional District REQUESTED ZONING: same PRESENT LAND USE DESIGNATION: Pulbic/Semi-Public REQUESTED LAND USE DESIGNATION: same REASON FOR REQUEST: City water tower FOR SITE PLAN REVIEW: Include number of existing employees: and new employees: 0 This application must be completed in full and be typewritten or dearly 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. 1 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 1 have submitted are true and correct to the best of my knowledge. Sidnalfreu � Applicant Dat a�� tit Signature dit3 WWis Date Execut Director of Fina ce Operations \tefsScfsAshamd_data`iplanVo I I planning caseskl 1 -01 minnelmlia middle schaol [rest iup\dmbpm nt miew applicationsbc Minnetonka West Middle School LEGAL DESCRIPTION The Southwest Quarter (SW 1/4) of the Northwest Quarter (NW 1/4) of Section Three (3), Township One Hundred Sixteen (116), Range Twenty Three (23) West, according to the U. S. Government Survey thereof, excepting therefrom the 35/100ths acres conveyed by deed recorded in the office of the Register of Deeds of Carver County, Minnesota, in Back 8 of Deeds, page 400, and that port thereof conveyed by deed recorded in the office of the Register of Deeds of Carver County, Minnesota, in Book 41 of Deeds, page 322, and subject to the right, title and interest of the State of Minnesota in that strip of land conveyed by deed recorded in the office of the Register of Deeds of Carver County, Minnesota, In Book 33 of Deeds, page 25. Also that part of Lot E, Bardwell Acres, not conveyed by said deed recorded in the office of the Register of Deeds of Carver County, Minnesota, in Book 41 of Deeds, page 322. Subject to a permanent easement for roadway purposes as recorded in the office of the Register of Deeds of Carver County, Minnesota, In Book 64 of Deeds, page 32. A SEH MEMORANDUM TO: Paul Oehme/City of Chanhassen FROM: Rebecca Nestingen/SEH DATE: June 2, 2011 RE: Tower Site Pond Relocation 1 0.74 SEH No. CHANH 114852 In the southwest corner of the Minnetonka Middle School property a proposed water tower would require the relocation of an existing stormwater detention pond. The proposed relocation site of the pond is slightly to the north into the adjacent hillside. Currently the pond receives stormwater runoff from a drainage area of approximately 5.5 acres, just slightly over half of which is impervious surface. For the proposed pond relocation, the majority of the drainage from the east has been maintained, however, the drainage area increases slightly to 5.7 acres due to the pond relocation north and additional drainage area from the grading on the hillside. The impervious surface area to the proposed pond remains consistent with the existing conditions. The existing pond functions as a dry detention basin which reduces peak flow rates and provides marginal water quality benefits. The objective of the proposed pond design was to maintain the flood storage of the existing pond so as to not exceed existing peak flow rates and to gain water quality treatment benefits through a two cell filtration basin design. Table 1 below summarizes the peak flow rates for the existing and proposed conditions which have been modeled using HydroCADg. Attached is a HydroCAD® report for further details. To quantify the water quality benefits of the proposed basin in relation to the existing pond, the existing and proposed conditions were modeled in P8. Table 2 below summarizes the P8 results of total suspended solids (TSS) and total phosphorus (TP) annual load reductions. 2 -yr, 24-hour 6.25 4.27 10 -yr, 24-hour 7.55 7.51 Table 2 TSS and TP Pond Inflow 166.7 162.7 1 0.95 0.94 Pond Outflow 50.5 31.6 1 0.74 0.30 %Removal 701/o 81% 1 22% 68% Please do not hesitate to contact me at 651490-2175 or mestingenAsehinc.com if any questions or concerns arise. rsn Attachment , \ \&henh\I 14852 5-&,s pond W... dei, memo don Short Elliott Hendrickson Inc., 3535 Vadnais Center Drive. St. Paul, MN 55110-5196 SEH is an equal opportunity employer I v .sehinc.com 1 651 490 2000 1 600.325.2055 1 651.490.2150 fax MIN I Planning Case No. 11-05 CITY OF CHANHASSEN 7700 Market Boulevard — P.O. Box 147 Chanhassen, MN 55317 — (952) 227-1100 DEVELOPMENT REVIEW APPLICATION Applicant Name and Address: City of Chanhassen 7700 Market Boulevard Chanhassen, MN 55317 Contact: Paul Oehme, Public Works Director Phone: 952-227-1169 Fax: 952-227-1170 Email: poehmeftci.chanhassen.mn.us Property Owner Name and Address: Minnetonka School District 276 5621 County Road 101 Minnetonka, MN 55345 Contact: Paul Bourgeois, Exec. Dir. of Finance Phone: 952-401-5024 Fax: 952-401-5032 Email: paul.bourgeois@minnetonka.kl2.edn mn uS 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) Nonconforming Use Permit Planned Unit Development` Rezoning Sign Permits Sign Plan Review X Site Plan Review (SPR)' Subdivision' Temporary Sales Permit Vacation of Right-of-Way/Easements (VAC) (Additional recording fees may apply) Variance (VAR) Wettand Alteration Permit (VJAP) Zoning Appeal Zoning Ordinance Amendment Notification Sign — $200 (City to install and remove) X Escrow for Filing Fees/Attorney Cost- - $50 CUP/SPRNACNARANAP/Metes & Bounds - $450 Minor SUB TOTAL FEE $ 0.00 An additional fee of $3.00 per address within the public hearing notification area will be invoiced to the applicant prior to the public hearing. *Five (5) full-size folded copies of the plans must be submitted, including an S'/z" X 11" reduced copy for each plat. sheet along with a digital copy in TIFF -Group 4 (*.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. PROJECT NAME: Minnetonka West Water Tower LOCATION: 13421 Hazeltine Boulevard Excelsior MN 55331 LEGAL DESCRIPTION AND PID: See attached lecal description PID 250033000 TOTAL ACREAGE: WETLANDS PRESENT: YES X NO PRESENT ZONING: OI Office & Institutional District REQUESTED ZONING: same PRESENT LAND USE DESIGNATION: Pulbic/Semi-Public REQUESTED LAND USE DESIGNATION: same REASON FOR REQUEST: City water lower FOR SITE PLAN REVIEW: Include number of existing employees: and new employees: 0 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. S' at re o Applicant \ Dat G5 3 -sI Signature RMd30Ulllg4015 Date Executive Director of Fina Operations lkis5`e6515harcd_dam1flant.'01 I plannmg cases`.11-01 minnetonka middle Ktl wolf wpAcnlopment ro tew applim ion.doc Minnetonka Rest Noddle School LEGAL DESCRIPTION The Southwest Quarter (SW 1/4) of the Northwest Quarter (NW 1/4) of Section Three (3), Township One Hundred Sixteen (116), Range Twenty Three (23) West, according to the U. S. Government Survey thereof, excepting therefrom the 35/100ths acres conveyed by deed recorded in the office of the Register of Deeds of Carver County, Minnesota, in Book B of Deeds, page 400, and that port thereof conveyed by deed recorded in the office of the Register of Deeds of Carver County, Minnesota, in Book 41 of Deeds, page 322, and subject to the right, title and interest of the State of Minnesota in that strip of land conveyed by deed recorded in the office of the Register of Deeds of Carver County, Minnesota, In Book 33 of Deeds, page 25. Also that part of Lot E, Bordwell Acres, not conveyed by said deed recorded in the office of the Register of Deeds of Carver County, Minnesota, in Book 41 of Deeds, page 322. Subject to a permanent easement for roadway purposes as recorded in the office of the Register of Deeds of Carver County, Minnesota, in Book 64 of Deeds, page 32. MY OF Date: May 23, 2011 City of Chanhassen 7700 Market Boulevard P.O. Box 147 Chanhassen, MN 55317 (952)227-1100 To: Development Plan Referral Agencies From: Planning Department Review Response Deadline: June 10, 2011 By: Robert Generous, Senior Planner, 952-227-1133 Subject: WATER TOWER — Request for Site Plan Review for construction of a water tower. The property is located at 6421 Hazeltine Boulevard (Minnetonka Middle School West site) and is zoned OI, Office Institutional. Applicant: City of Chanhassen. Property Owner: Independent School District #276. Planning Case: 2011-05 PID: 25-0033000 The above-described application for approval of a land development proposal was filed with the Chanhassen Planning Department on May 20, 2011. The 60 -day review period ends July 19, 2011. 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 June 21, 2011 at 7:00 p.m. in the Council Chambers at Chanhassen City Hall. We would appreciate receiving your comments by no later than June. 10, 2011. You may also appear at the Planning Commission meeting if you so desire. Your cooperation and assistance is greatly appreciated. 1. City Departments: a. City Engineer b. City Attorney c. City Park Director d. Fire Marshal e. Building Official E 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 7. 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 Energy or MN Valley) 11. Mediacom 12. CenterPoint Energy Minnegasco 13. Minnetonka School District 276 SCANNED PID# 250033000 Legend Ca PAN elepnra �/� as Meawn trrs.r Tuning lar /�/• Cgasan hussar Ulan ravels Cela 1011 ParcelInfamo1L31 Property Auer: -- M'_I HAZELTINE BLVD I X('GLSIOB, MN Parcel PrWrdes -- Tax Acres: 30.71 School D(prkl: 027 Parcel Leetwlal Section: 03 7'ownsklp: 116 Rangy. 023 iPryrNe Year 2111 Taxpayer Ie6eralMa - - IND SCHOOL DIST 276 261 SCHOOL AVE EXCELSIOR, MN $5331 Last Sale Information Last Sale NOT ON FILE Est. Market Value Land: 53348000 Eat. Markel Value Building: 51 1138500 Map Created: 1217010 Eat. Market Value "Total: 514486500 CARVER COUNTY GIS DIS- - TYia n" air healed using Carver County's Geograplsic Information Sys nmzs (GIS), i1 is a compi ab-- O(wbrratlOn sad skb "M varfor CitY, CmaMy, guy, and Federal offices. This map is we a surveyed or legally recorded map and is intended wilhe used an rfeawre Crop County is not responsible for any inaccuracies contained herein. SCANNED Original Surface Model: Final Surface Model: 0.75 MG Elevated Water Storage Tank Chanhassen, MN Earthwork Calculations CHANH 114852 EX FROM CONTOURS PROPOSED CONTOURS Raw Cut Volume: 4406.92 cu. Yds. Compacted Cut Volume: 0.00 cu. Yds. Total Cut Volume: 4406.92 cu. Yds. Loose Volume Expansion Factor: 1.15 Loose Cut Volume: 5067.96 cu. Yds. Raw Fill Volume: Compacted Fill Volume: Total Fill Volume: Loose Volume Expansion Factor: Loose Cut Volume: Differential: 2219.96 cu. Yds. 0.00 cu. Yds. 2219.96 cu. Yds. 1.30 2885.95 cu. Yds. 5,067.96 - 2,885.95 = 2182.01 cu. yds. (LV) Excess SCANNED SEH MEMORANDUM TO: Paul Oehme/City of Chanhassen FROM: Rebecca Nestingen/SEH DATE: June 2, 2011 RE: Tower Site Pond Relocation 1 0.74 SEH No. CHANH 114852 In the southwest comer of the Minnetonka Middle School property a proposed water tower would require the relocation of an existing stormwater detention pond. The proposed relocation site of the pond is slightly to the north into the adjacent hillside. Currently the pond receives stormwater runoff from a drainage area of approximately 5.5 acres, just slightly over half of which is impervious surface. For the proposed pond relocation, the majority of the drainage from the east has been maintained, however, the drainage area increases slightly to 5.7 acres due to the pond relocation north and additional drainage area from the grading on the hillside. The impervious surface area to the proposed pond remains consistent with the existing conditions. The existing pond functions as a dry detention basin which reduces peak flow rates and provides marginal water quality benefits. The objective of the proposed pond design was to maintain the flood storage of the existing pond so as to not exceed existing peak flow rates and to gain water quality treatment benefits through a two cell filtration basin design. Table 1 below summarizes the peak flow rates for the existing and proposed conditions which have been modeled using HydroCADO. Attached is a HydroCAD® report for further details. To quantify the water quality benefits of the proposed basin in relation to the existing pond, the existing and proposed conditions were modeled in P8. Table 2 below summarizes the P8 results of total suspended solids (TSS) and total phosphorus (TP) annual load reductions. Table 1 Peak flow ratesin cfs 2- r, 24-hour 6.25 4.27 10- r, 24-hour 7.55 7.51 100- r, 24-hour 8.99 8.98 reductions Pon Inflow 166.7 ]62.7 0.95 0.94 Pond Outflow 50.5 31.6 1 0.74 0.30 %Removal 1 70% 81% 1 22% 68% Please do not hesitate to contact me at 651-490-2175 or mestinpen@sehinc.com if any questions or concerns arise. rsn Attachment s�khmhl11485' x -0s n xxo d relocation chip metro d x Short Elliott Hendrickson Inc., 3535 Vadnais Center Drive. St. Paul, MN 55110-5196 SEH is an equal opportunity employer I w .sehinc.com 1 651.490.2000 1 600.325.2055 1 651.490.2150 fax SCANNED Existing Pond Subcat Reach Aon Link Prop sed 2P Proposed Pond SCANNED Minnetonka Middle School SW Pond Type 11 24 -hr 2 -yr, 24 -hr Rainfall=2.80" Prepared by SEH, Inc. Printed 6/2/2011 HydroCAD® 9.10 s/n 01109 02009 HydroCAD Software Solutions LLC Page 2 Summary for Subcatchment 3S: Existing Runoff = 7.09 cls @ 12.12 hrs, Volume= 0.528 af, Depth= 1.16" Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24 -hr 2 -yr, 24 -hr Rainfall=2.80" Area (sf) CN Description 126,860 98 Paved parking, HSG B 110,672 61 >75% Grass cover, Good HSG B 237,532 81 Weighted Average 110,672 46.59% Pervious Area 126,860 53.41 % Impervious Area Tc Length Slope min) (feet) (ft/ft) 16.3 220 0.0320 2.5 300 0.0100 0.3 260 0.0400 19.1 780 Total Velocity Capacity Description 0.22 Sheet Flow, Grass: Short n= 0.150 P2= 2.80" 2.03 Shallow Concentrated Flow, Paved Kv= 20.3 fps 14.31 1,502.24 Channel Flow, Area= 105.0 sf Perim= 60.5' r= 1.74' n= 0.030 Short grass Summary for Subcatchment 4S: Proposed Runoff = 6.95 cfs @ 12.12 hrs, Volume= 0.521 af, Depth= 1.10" Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24 -hr 2 -yr, 24 -hr Rainfall=2.80" Area (sf) CN Description 126,860 98 Paved parking, HSG B 120,197 61 >75% Grass cover, Good HSG B 247,057 80 Weighted Average 120,197 220 48.65% Pervious Area 126,860 51.35% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (f /sec) (cfs) 16.3 220 0.0320 0.22 Sheet Flow, Grass: Short n= 0.150 P2= 2.80" 2.5 300 0.0100 2.03 Shallow Concentrated Flow, Paved Kv= 20.3 fps 0.3 260 0.0400 14.31 1,502.24 Channel Flow, Area= 105.0 sf Perim= 60.5' r= 1.74' n= 0.030 Short grass 19.1 780 Total Minnetonka Middle School SW Pond Type 11 24-hr 2-yr, 24-hr Rainfall=2.80" Prepared by SEH, Inc. Printed 6/2/2011 HydroCAD® 9.10 s/n 01109 © 2009 HydroCAD Software Solutions LLC Page 3 Summary for Pond 1P: Existing Pond Inflow Area = 5.453 ac, 53.41 % Impervious, Inflow Depth = 1.16" for 2-yr, 24-hr event Inflow = 7.09 cfs @ 12.12 hrs, Volume= 0.528 of Outflow = 6.25 cfs @ 12.19 hrs, Volume= 0.497 af, Atten= 12%, Lag= 4.2 min Primary = 6.25 cfs @ 12.19 hrs, Volume= 0.497 of Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of Routing by Dyn-Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 1,035.33' @ 12.19 hrs Surf.Area= 3,570 sf Storage= 2,651 cf Plug-Flow detention time= 47.7 min calculated for 0.497 of (94% of inflow) Center-of-Mass det. time= 15.8 min ( 871.0 - 855.3) Volume Invert Avail.Storage Storage Description #1 1,034.45' 24,446 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 1,034.45 2,396 0 0 1,035.00 3,180 1,533 1,533 1,036.00 4,356 3,768 5,301 1,037.00 5,663 5,010 10,311 1,038.00 7,013 6,338 16,649 1,039.00 8,581 7,797 24,446 Device Routing Invert Outlet Devices #1 Primary 1,032.10' 12.0" Round Culvert L= 84.0' CPP, square edge headwall, Ke= 0.500 Inlet/ Outlet Invert= 1,032.10' / 1,026.90' S= 0.06197 Cc= 0.900 n= 0.010 PVC, smooth interior #2 Device 1 1,034.94' 24.0" x 36.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Secondary 1,038.60' 15.0' long x 8.0' 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) 2.43 2.54 2.70 2.69 2.68 2.68 2.66 2.64 2.64 2.64 2.65 2.65 2.66 2.66 2.68 2.70 2.74 Primary OutFlow, Max=6.25 cfs @ 12.19 hrs HW=1,035.33' (Free Discharge) Lt-Culvert (Inlet Controls 6.25 cfs @ 7.95 fps) 2=Orifice/Grate (Passes 6.25 cfs of 7.92 cfs potential flow) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=1,034.45' (Free Discharge) 3=Broad-Crested Rectangular Weir( Controls 0.00 cfs) Minnetonka Middle School SW Pond Type 1124-hr2-yr, 24 -hr Rainfall=2.80" Prepared by SEH, Inc. Printed 6/2/2011 HydroCADO 9.10 s/n 01109 © 2009 HydroCAD Software Solutions LLC Page 4 Summary for Pond 2P: Proposed Pond Inflow Area = 5.672 ac, 51.35% Impervious, Inflow Depth = 1.10" for 2 -yr, 24 -hr event Inflow = 6.95 cfs @ 12.12 hrs, Volume= 0.521 of Outflow = 4.34 cfs @ 12.29 hrs, Volume= 0.521 af, Atten= 38%, Lag= 10.0 min Discarded = 0.07 cfs @ 12.29 hrs, Volume= 0.053 of Primary = 4.27 cfs @ 12.29 hrs, Volume= 0.467 of Routing by Dyn-Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 1,035.66' @ 12.29 hrs Surf.Area= 3,916 sf Storage= 4,388 cf Plug -Flow detention time= 23.3 min calculated for 0.520 of (100% of inflow) Center -of -Mass det. time= 23.5 min ( 882.2 - 858.7 ) Volume Invert Avail.Storage Storage Description #1 1,032.00' 24,767 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Voids Inc.Store Cum.Store (feet) (sq -ft) (%) (cubic -feet) (cubic -feet) 1,032.00 1,824 0.0 0 0 1,034.50 2,578 30.0 1,651 1,651 1,035.00 3,111 30.0 427 2,077 1,036.00 4,336 100.0 3,724 5,801 1,037.00 5,656 100.0 4,996 10,797 1,038.00 6,914 100.0 6,285 17,082 1,039.00 8,456 100.0 7,685 24,767 Device Routing Invert Outlet Devices #1 Discarded 1,032.00' 0.800 in/hr Exfiltration over Surface area Conductivity to Groundwater Elevation = 0.00' #2 Device 3 1,035.50' 27.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Primary 1,032.25' 12.0" Round Culvert L= 98.0' CPP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 1,032.25' / 1,026.90' S= 0.0546 V Cc= 0.900 n=0.010 PVC, smooth interior #4 Device 3 1,032.50' 8.0" Vert. Orifice/Grate C= 0.600 Discarded OutFlow Max=0.07 cfs @ 12.29 hrs HW=1,035.65' (Free Discharge) 1=Exfiltration ( Controls 0.07 cfs) Primary OutFlow, Max=4.23 cfs @ 12.29 hrs HW=1,035.65' (Free Discharge) 't - =Culvert (Passes 4.23 cfs of 6.45 cfs potential flow) 2=Orifice/Grate (Weir Controls 1.41 cfs @ 1.29 fps) =Orifice/Grate (Orifice Controls 2.82 cfs @ 8.09 fps) Minnetonka Middle School SW Pond Type// 24 -hr 10 -yr, 24 -hr Rainfall=4.20" Prepared by SEH, Inc. Printed 6/2/2011 HydroCAD® 9.10 s/n 01109 @2009 HydroCAD Software Solutions LLC Page 5 Summary for Subcatchment 3S: Existing Runoff = 14.19 cfs @ 12.12 hrs, Volume= 1.041 af, Depth= 2.29" Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24 -hr 10 -yr, 24 -hr Rainfall=4.20" _ Area (sf) CN Description 126,860 98 Paved parking, HSG B 110,672 61 >75% Grass cover, Good, HSG B 237,532 81 Weighted Average 110,672 220 46.59% Pervious Area 126,860 53.41 % Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (f /ft) (fUsec) (cfs) 16.3 220 0.0320 0.22 Sheet Flow, Grass: Short n=0.150 P2=2.80" 2.5 300 0.0100 2.03 Shallow Concentrated Flow, Paved Kv= 20.3 fps 0.3 260 0.0400 14.31 1,502.24 Channel Flow, Area= 105.0 sf Perim= 60.5' r- 1.74' n= 0.030 Short arass 19.1 780 Total Summary for Subcatchment 4S: Proposed Runoff = 14.22 cfs @ 12.12 hrs, Volume= 1.044 af, Depth= 2.21" Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24 -hr 10 -yr, 24 -hr Rainfall=4.20" Area (sf) CN Description 126,860 98 Paved parking, HSG B 120,197 61 >75% Grass cover, Good, HSG B 247,057 80 Weighted Average 120,197 48.65% Pervious Area 126,860 51.35% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 16.3 220 0.0320 0.22 Sheet Flow, Grass: Short n= 0.150 P2= 2.80" 2.5 300 0.0100 2.03 Shallow Concentrated Flow, Paved Kv= 20.3 fps 0.3 260 0.0400 14.31 1,502.24 Channel Flow, Area= 105.0 sf Perim= 60.5' r= 1.74' n= 0.030 Short arass 19.1 780 Total Minnetonka Middle School SW Pond Type // 24 -hr 10 -yr, 24 -hr Rainfall=4.20" Prepared by SEH, Inc. Printed 6/2/2011 HydroCAD® 9.10 s/n 01109 02009 HydroCAD Software Solutions LLC Page 6 Summary for Pond 1P: Existing Pond Inflow Area = 5.453 ac, 53.41 % Impervious, Inflow Depth = 2.29" for 10 -yr, 24 -hr event Inflow = 14.19 cfs @ 12.12 hrs, Volume= 1.041 of Outflow = 7.55 cfs @ 12.31 hrs, Volume= 1.01Oaf, Atten= 47%, Lag= 11.6 min Primary = 7.55 cfs @ 12.31 hrs, Volume= 1.010 of Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of Routing by Dyn-Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 1,036.59' @ 12.31 hrs Surf.Area= 5,121 sf Storage= 8,076 cf Plug -Flow detention time= 33.0 min calculated for 1.010 of (97% of inflow) Center -of -Mass det. time= 14.9 min ( 850.6 - 835.7) Volume Invert Avail.Storage Storage Description #1 1,034.45' 24,446 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq -ft) (cubic -feet) (cubic -feet) 1,034.45 2,396 0 0 1,035.00 3,180 1,533 1,533 1,036.00 4,356 3,768 5,301 1,037.00 5,663 5,010 10,311 1,038.00 7,013 6,338 16,649 1,039.00 8,581 7,797 24,446 Device Routing Invert Outlet Devices #1 Primary 1,032.10' 12.0" Round Culvert L= 84.0' CPP, square edge headwall, Ke= 0.500 Inlet/ Outlet Invert= 1,032.10'/ 1,026.90' S= 0.0619'P Cc= 0.900 n= 0.010 PVC, smooth interior #2 Device 1 1,034.94' 24.0" x 36.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Secondary 1,038.60' 15.0' long x 8.0' 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) 2.43 2.54 2.70 2.69 2.68 2.68 2.66 2.64 2.64 2.64 2.65 2.65 2.66 2.66 2.68 2.70 2.74 Primary OutFlow Max=7.54 cfs @ 12.31 hrs HW=1,036.58' (Free Discharge) L1 Culvert (Inlet Controls 7.54 cfs @ 9.61 fps) 2=Orifice/Grate (Passes 7.54 cfs of 37.00 cfs potential flow) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=1,034.45' (Free Discharge) 3=B road -C rested Rectangular Weir( Controls 0.00 cfs) Minnetonka Middle School SW Pond Type 11 24 -hr 10 -yr, 24 -hr Rainfall=4.20" Prepared by SEH, Inc. Printed 6/2/2011 H�droCAD0 9.10 s/n 01109 02009 HvdroCAD Software Solutions LLC Page 7 Summary for Pond 2P: Proposed Pond Inflow Area = 5.672 ac, 51.35% Impervious, Inflow Depth = 2.21" for 10 -yr, 24 -hr event Inflow = 14.22 cfs @ 12.12 hrs, Volume= 1.044 of Outflow = 7.60 cfs @ 12.31 hrs, Volume= 1.044 af, Atten= 47%, Lag= 11.6 min Discarded = 0.10 cfs @ 12.31 hrs, Volume= 0.062 of Primary = 7.51 cfs @ 12.31 hrs, Volume= 0.981 of Routing by Dyn-Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 1,036.69' @ 12.31 hrs Surf.Area= 5,247 sf Storage= 9,107 cf Plug -Flow detention time= 18.6 min calculated for 1.043 of (100% of inflow) Center -of -Mass det. time= 18.8 min ( 857.4 - 838.6) Volume Invert Avail.Storage Storage Description #1 1,032.00' 24,767 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Voids Inc.Store Cum.Store (feet) (sq -ft) (%) (cubic -feet) (cubic -feet) 1,032.00 1,824 0.0 0 0 1,034.50 2,578 30.0 1,651 1,651 1,035.00 3,111 30.0 427 2,077 1,036.00 4,336 100.0 3,724 5,801 1,037.00 5,656 100.0 4,996 10,797 1,038.00 6,914 100.0 6,285 17,082 1,039.00 8,456 100.0 7,685 24,767 Device Routing Invert Outlet Devices #1 Discarded 1,032.00' 0.800 in/hr Exfiltration over Surface area Conductivity to Groundwater Elevation = 0.00' #2 Device 3 1,035.50' 27.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Primary 1,032.25' 12.0" Round Culvert L= 98.0' CPP, square edge headwall, Ke= 0.500 Inlet/ Outlet Invert= 1,032.25'/ 1,026.90' S= 0.0546'/' Cc= 0.900 n= 0.010 PVC, smooth interior #4 Device 3 1,032.50' 8.0" Vert. Orifice/Grate C= 0.600 4iscarded OutFlow Max=0.10 cfs @ 12.31 hrs HW=1,036.68' (Free Discharge) 1=Exfiltration ( Controls 0.10 cfs) Primary OutFlow Max=7.50 cfs @ 12.31 hrs HW=1,036.68' (Free Discharge) trCulvert (Inlet Controls 7.50 cfs @ 9.55 fps) 2=Orifice/Grate (Passes < 20.84 cfs potential flow) 4=Orifice/Grate (Passes < 3.30 cfs potential flow) Minnetonka Middle School SW Pond Type// 24 -hr 100 -yr, 24 -hr Rainfall=6.00" Prepared by SEH, Inc. Printed 6/2/2011 HydroCAD® 9.10 s/n 01109 © 2009 HydroCAD Software Solutions LLC Page 8 Summary for Subcatchment 3S: Existing Runoff = 23.93 cfs @ 12.11 hrs, Volume= 1.765 af, Depth= 3.88" Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24 -hr 100 -yr, 24 -hr Rainfall=6.00" Area (sf) CN Descriotion 126,860 98 Paved parking, HSG B 110,672 61 >75% Grass cover, Good, HSG B 237,532 81 Weighted Average 110,672 46.59% Pervious Area 126,860 53.41%Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 120,197 16.3 220 0.0320 0.22 Sheet Flow, Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) Grass: Short n= 0.150 P2= 2.80" 2.5 300 0.0100 2.03 Grass: Short n= 0.150 P2= 2.80" Shallow Concentrated Flow, 0.0100 2.03 Shallow Concentrated Flow, Paved Kv= 20.3 fps Paved Kv= 20.3 fps 0.3 260 0.0400 14.31 1,502.24 Channel Flow, n= 0.030 Short grass Area= 105.0 sf Perim= 60.5' r= 1.74' 19.1 780 Total Summary for Subcatchment 4S: Proposed Runoff = 24.28 cfs @ 12.11 hrs, Volume= 1.787 af, Depth= 3.78" Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24 -hr 100 -yr, 24 -hr Rainfall=6.00" Area (sf) CN Description 126,860 98 Paved parking, HSG B 120,197 61 >75% Grass cover, Good, HSG B 247,057 80 Weighted Average 120,197 48.65% Pervious Area 126,860 51.35% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 16.3 220 0.0320 0.22 Sheet Flow, Grass: Short n= 0.150 P2= 2.80" 2.5 300 0.0100 2.03 Shallow Concentrated Flow, Paved Kv= 20.3 fps 0.3 260 0.0400 14.31 1,502.24 Channel Flow, Area= 105.0 sf Perim= 60.5' r= 1.74' n= 0.030 Short grass 19.1 780 Total Minnetonka Middle School SW Pond Type// 24 -hr 100 -yr, 24 -hr Rainfall=6.00" Prepared by SEH, Inc. Printed 6/2/2011 I)ydroCAD® 9.10 s/n 01109 @2009 HVdroCAD Software Solutions LLC Page 9 Summary for Pond 1 P: Existing Pond Inflow Area = 5.453 ac, 53.41 % Impervious, Inflow Depth = 3.88" for 100 -yr, 24 -hr event Inflow = 23.93 cfs @ 12.11 hrs, Volume= 1.765 of Outflow = 8.99 cfs @ 12.38 hrs, Volume= 1.734 af, Atten= 62%, Lag= 16.2 min Primary = 8.99 cfs @ 12.38 hrs, Volume= 1.734 of Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of Routing by Dyn-Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 1,038.26' @ 12.38 hrs Surf.Area= 7,414 sf Storage= 18,494 cf Plug -Flow detention time= 30.3 min calculated for 1.732 of (98% of inflow) Center -of -Mass det. time= 19.7 min ( 840.3 - 820.6) _Volume Invert Avail.Storage Storage Description #1 1,034.45' 24,446 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store _ (feet) (sq -ft) (cubic -feet) (cubic -feet) 1,034.45 2,396 0 0 1,035.00 3,180 1,533 1,533 1,036.00 4,356 3,768 5,301 1,037.00 5,663 5,010 10,311 1,038.00 7,013 6,338 16,649 1,039.00 8,581 7,797 24,446 Device Routing Invert Outlet Devices #1 Primary 1,032.10' 12.0" Round Culvert L= 84.0' CPP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 1,032.10' / 1,026.90' S= 0.0619 T Cc= 0.900 n= 0.010 PVC, smooth interior #2 Device 1 1,034.94' 24.0" x 36.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Secondary 1,038.60' 15.0' long x 8.0' 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) 2.43 2.54 2.70 2.69 2.68 2.68 2.66 2.64 2.64 2.64 2.65 2.65 2.66 2.66 2.68 2.70 2.74 Primary OutFlow Max=8.99 cfs @ 12.38 hrs HW=1,038.25' (Free Discharge) 't-1 =Culvert (Inlet Controls 8.99 cfs @ 11.45 fps) t2=Orifice/Grate (Passes 8.99 cfs of 52.57 cfs potential flow) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=1,034.45' (Free Discharge) 3=Broad-Crested Rectangular Weir(Controls 0.00 cfs) Minnetonka Middle School SW Pond Type 1124 -hr 100 -yr, 24 -hr Rainfall=6.00" Prepared by SEH, Inc. Printed 6/2/2011 HydroCAD® 9.10 s/n 01109 02009 HydroCAD Software Solutions LLC Page 10 Summary for Pond 2P: Proposed Pond Inflow Area = 5.672 ac, 51.35% Impervious, Inflow Depth = 3.78" for 100 -yr, 24 -hr event Inflow = 24.28 cfs @ 12.11 hrs, Volume= 1.787 of Outflow = 9.12 cfs @ 12.38 hrs, Volume= 1.787 af, Atten= 62%, Lag= 16.2 min Discarded = 0.14 cfs @ 12.38 hrs, Volume= 0.075 of Primary = 8.98 cfs, @ 12.38 hrs, Volume= 1.713 of Routing by Dyn-Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 1,038.39' @ 12.38 hrs Surf.Area= 7,514 sf Storage= 19,888 cf Plug -Flow detention time= 22.1 min calculated for 1.785 of (100% of inflow) Center -of -Mass det. time= 22.2 min ( 845.4 - 823.2 ) Volume Invert Avail.Storage Storage Description #1 1,032.00' 24,767 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Voids Inc.Store Cum.Store (feet) (sq -ft) (%) (cubic -feet) (cubic -feet) 1,032.00 1,824 0.0 0 0 1,034.50 2,578 30.0 1,651 1,651 1,035.00 3,111 30.0 427 2,077 1,036.00 4,336 100.0 3,724 5,801 1,037.00 5,656 100.0 4,996 10,797 1,038.00 6,914 100.0 6,285 17,082 1,039.00 8,456 100.0 7,685 24,767 Device Routing Invert Outlet Devices #1 Discarded 1,032.00' 0.800 in/hr Exfiltration over Surface area Conductivity to Groundwater Elevation = 0.00' #2 Device 3 1,035.50' 27.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Primary 1,032.25' 12.0" Round Culvert L= 98.0' CPP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 1,032.25' / 1,026.90' S= 0.0546 T Cc= 0.900 n= 0.010 PVC, smooth interior #4 Device 3 1,032.50' 8.0" Vert. Orifice/Grate C= 0.600 Lcarded OutFlow Max=0.14 cfs @ 12.38 hrs HW=1,038.38' (Free Discharge) 1=Exfiltration ( Controls 0.14 cfs) Primary OutFlow Max=8.98 cfs @ 12.38 hrs HW=1,038.38' (Free Discharge) L =Culvert (Inlet Controls 8.98 cfs @ 11.43 fps) 2=Orifice/Grate (Passes < 32.52 cfs potential flow) =Orifice/Grate (Passes < 3.96 cfs potential flow) A SEH MEMORANDUM TO: Paul Oehme/City of Chanhassen FROM: Rebecca Nestingen/SEH DATE: June 2, 2011 RE: Tower Site Pond Relocation 0.74 SEH No. CHANH 114852 In the southwest corner of the Minnetonka Middle School property a proposed water tower would require the relocation of an existing stormwater detention pond. The proposed relocation site of the pond is slightly to the north into the adjacent hillside. Currently the pond receives stormwater runoff from a drainage area of approximately 5.5 acres, just slightly over half of which is impervious surface. For the proposed pond relocation, the majority of the drainage from the east has been maintained, however, the drainage area increases slightly to 5.7 acres due to the pond relocation north and additional drainage area from the grading on the hillside. The impervious surface area to the proposed pond remains consistent with the existing conditions. The existing pond functions as a dry detention basin which reduces peak flow rates and provides marginal water quality benefits. The objective of the proposed pond design was to maintain the flood storage of the existing pond so as to not exceed existing peak flow rates and to gain water quality treatment benefits through a two cell filtration basin design. Table 1 below summarizes the peak flow rates for the existing and proposed conditions which have been modeled using HydroCAD®. Attached is a HydroCAD® report for further details. To quantify the water quality benefits of the proposed basin in relation to the existing pond, the existing and proposed conditions were modeled in P8. Table 2 below summarizes the P8 results of total suspended solids (TSS) and total phosphorus (TP) annual load reductions. Table 2 Pond Inflow 1 166.7 162.7 0.95 0.94 Pond Outflow 50.5 31.6 0.74 0.30 % Removal 70% 81% 22% 68% Please do not hesitate to contact me at 651-490-2175 or rnestineen(i�sehinc.com if any questions or concerns arise. rsn Attachment s �W1/85f\S.d VS rdonnw4 pmono don Short Elliott Hendrickson Inc., 3535 Vadnais center Drive, St. Paul, MN 55110-5196 SEH is an equal opportunity employer I w .sehincxom 1 651.490.2000 1 800 325 2055 1 651.490.2150 fax SCANNED CITY OF CHANHASSEN CARVER & HENNEPIN COUNTIES NOTICE OF PUBLIC HEARING PLANNING CASE NO. 11-05 NOTICE IS HEREBY GIVEN that the Chanhassen Planning Commission will hold a public hearing on Tuesday, June 21, 2011, at 7:00 p.m. in the Council Chambers in Chanhassen City Hall, 7700 Market Blvd. The purpose of this hearing is to consider a request for Site Plan review for construction of a water tower on property zoned Office Institutional (OI) located at Minnetonka Middle School West (6421 Hazeltine Boulevard). Applicant: City of Chanhassen. A plan showing the location of the proposal is available for public review on the City's web site at www.ci.chanhassen.mn.us/serv/plan/11-05.html or at City Hall during regular business hours. All interested persons are invited to attend this public hearing and express their opinions with respect to this proposal. Robert Generous, Senior Planner Email: beenerouskci.chanhassen.mn.us Phone: 952-227-1131 (Publish in the Chanhassen Villager on June 9, 2011) SCANNED 750,000 GALLON WATER TOWER FOR THE CITY OF HANHASSENo MINNESOTA PROJECT LOCATION CITY OF CHANHASSEN ,nr 1 rr .1 jJ To r F i�� / ; �! �: t ..••.. Nit t.. �,. LoOCATION MAP lo;� CITY HALL SCANNED f \o -)'l owl p I 1 �pNCDO-13 000 w3 I I I I INV=1036. MINNETONKA MIDDLE SCHOOL WEST I.S.D. 276 (12)1 \ (9)3-5" 7" 1�12' 12)l E / o • F T. C/Aooz A�zz I I « CO p4(RIM=1041.4 N FES INV=1038.7 W/72„pVC» / INV=1035.3 0382INV=1NE�(N / -- INV=1037.9 �S ^ I � \ co C? \ \ \ 2.p \ FES \ /o \\ \ I tC INV=16518" CPP N - 12"RCP 20 0 TO p a 10 I J) I I I RIM=1034.94\ ' \-/--_- -- -/- --- 1> INV-1032RIM=1042.80 —_ !NV=1032INV�=1038.5W�1NV-1038.4 INV -f10/7.9 )fIRIyM== 11-0034-84..7 0 / INV=138.A-79— '51W— P i 1 i / A\ \\ •, A �, A` V �, r I l I I i � � l V V `- �,- i SCANNED z aW W < 0 W 0 U F inco U w z 00 zE o Z N W U SHEEP C1 -_ - 12"CLAY / o • F T. C/Aooz A�zz I I « CO p4(RIM=1041.4 N FES INV=1038.7 W/72„pVC» / INV=1035.3 0382INV=1NE�(N / -- INV=1037.9 �S ^ I � \ co C? \ \ \ 2.p \ FES \ /o \\ \ I tC INV=16518" CPP N - 12"RCP 20 0 TO p a 10 I J) I I I RIM=1034.94\ ' \-/--_- -- -/- --- 1> INV-1032RIM=1042.80 —_ !NV=1032INV�=1038.5W�1NV-1038.4 INV -f10/7.9 )fIRIyM== 11-0034-84..7 0 / INV=138.A-79— '51W— P i 1 i / A\ \\ •, A �, A` V �, r I l I I i � � l V V `- �,- i SCANNED z aW W < 0 W 0 U F inco U w z 00 zE o Z N W U SHEEP C1 Ci 1 / 41 (rn (2 ,8„ /oAiMWP l ? RCP ENERGY DISSIPATOR ' /' STRUCTURE 100 , \/ INV=101.0 CBMH 101 TC=1022.0 ' / CB INV=1018.0(E) ? INv=1015.1(w) / rINV1=10 CBMH 1021, TC=1032.0 INV=1026.6(E) / ' \ j/.. WATER TOWER COLUMN TOP OF WALL=1042.0 BOTTOM OF WALL=1038.0 I / ' N 0 � m POF=1038.5 C 10TT1)M OF )NO=1034.5 \' TOP OF WALL= 1038.0 ��RETNNING BOTTOM OF WALL=1034.0 \ 5��_ 1042.0 ,039.0 \FES 105 INV=103`5.5 J� 1 x�� I} ;k 17 I �, 1 9LU g WATER TOWER--- DRIPLINE WALLS MINNETONKA MIDDLE SCHOOL WEST I.S.D. 276 V POND OTRE / STRUCTURE 104 STRUG5.5 7�y1 INV -1032.3(W) INV=1032.5(E) SANITARY MANHOLES (9)3 - 1, 2' (12)1-\' 2. 12)1-�" CBMH 107 iC-,00'0 INv=I037.4(E) INV=1038.3(W) MH 109 - ------7! - �\ I `NV=1038.7 BIEE W NMINOUS ' Y -1-104ZO �&W\ Ull� F�NCE 1 / / —1050 = —7 STORM WATER POND NWL = 1035.50 100 YR = 1038.39 10 YR 1036.69 2 YR - 1035.66 SCANNED z N 0 20 0 20 ewle ,0 feel STORM WATER POND NWL = 1035.50 100 YR = 1038.39 10 YR 1036.69 2 YR - 1035.66 SCANNED z / v, W //(AqI MINNETONKA MIDDLE SCHOOL WEST I.S.D. 276 /F- (9)3-5" 7 Al2'1 5I ' 1�—y.. ) 2,. 8.._ \ " WATER TOWER - DRIPUNE WATER TOWER COLUMN a so �o kI o IM LEGEND CATEGORY 2 EROSTON CONTROL BLANKET BIOROLL SILT FENCE GEOCELL SEED, MULCH, DISK ANCHOR AND FERTILIZE ALL DISTURBED AREAS WITHIN 14 DAYS OF FINISH GRADING. SCANNED / //'1'/ ///, . {2 /✓ /�/ / //// ///� /lll I l f` MINNEfONKA MIDDLE SCHOOL WEST I.S.D. 276 OVERHEAD ELECTRIC TO BE DIRECT BURIED BY OTH�RS CUT AND CAP EXISTING J _I 6�WATEft MAIN (2 18" \ 0VE WATER MAIN \ 38 `F) (12)1-5. IOLEAR AND GRUB (1 TREE) JJ REMOVE SANITARY SEWER \ ,—CLEAR ACRES) I PIPE (50 LF) 0. " 7" X12• REMOVE SANITARY CLEAR AND GRUB (I TREE) MANHOLE REMOVE SANITARY / REMOVE- STORM - t� SEWER PIPE (50 LF) SEWER STRUCTURE _ �-2 / C)40 REMOVE STORM SEWER PIPE (26 LF) �\ REMOVE STORM SEWER ��� PIPE (142 LF) 1 I REMOVE \\ \LKHEAD STING APRON (2) / I I I STORM SEWER ��IXIORM SEWER PIPE / \qL 1111 REMOVE CHAINLINK ( � � �--' GI / .j r / —�_ FENCE LF) ` '�, \ \. REMOVE STORM I \ \� REMOVE�STOIZM SEWER — — — — — — — 1 1 \ REMOVE STORM SEWER STRUCTURE i PIPE (6" SEWER PIPE (64 LF) \\ \ \ \ !) OVERHEAD ELECTRIC TO BE - — / �O�0 DIRECT BURIED BY OTHERS REMOVE CHAIN LINK FENCE (125 LF) SCANNED N ZO 0 20 b .moi. io I.w REMOVE \\ \LKHEAD STING APRON (2) / I I I STORM SEWER ��IXIORM SEWER PIPE / \qL 1111 REMOVE CHAINLINK ( � � �--' GI / .j r / —�_ FENCE LF) ` '�, \ \. REMOVE STORM I \ \� REMOVE�STOIZM SEWER — — — — — — — 1 1 \ REMOVE STORM SEWER STRUCTURE i PIPE (6" SEWER PIPE (64 LF) \\ \ \ \ !) OVERHEAD ELECTRIC TO BE - — / �O�0 DIRECT BURIED BY OTHERS REMOVE CHAIN LINK FENCE (125 LF) SCANNED ZN Zlj ERGY DI SSIPATO/// STRUCTURE 1DO � INV=1013.00 I J / 26 LF 12' RCP CL N O 8.D0% i RIP RAP CBMH 101 TC=1022.00 / INV=1018.00(E) / INV=1015.08(W) 38 26 LF 12' RCP CL CL N O 8.DOX 44 LF 12' RCP 12"WATERDM�N I6.0 / CL N O 8.00% /P 8' AIt- 16' GV & BOX CBMH 103 TC=1042.00 CBMH 02 INV=1030.16(W) TC=1032.00 INV=1030.20(5) 11/��11I IW=1020.OB(W) \� 110LF 12' RCP OX / CL Na 8.DOX (/r I 16' &V & BOX JAI I \\\' 6GV & BOX 1 �4' RETAINING WALLS LF 12" RCP\ V O 5.50% \I SAN MH 1 TC=1053.50 f- INV=1036.66(N) INV-1036.56(SE) MINNETONKA MIDDLE SCHOOL WEST I.S.D. 276 _ 70 LF 12' PJC SDR 35 O 0.88X (9)3- SAN MH 2 \) 2, TC=1053.00 INV=1037.12(NW) - INV=1037.22(E) STRUCTURE 104 \\\\\\\\\ TC=1035.50 1 INV=1032.25(W) 1 INV=7032.50(E) \8' PERFORATED PVC 0.7X, BEDDED ON FILTRATION MEDIA (SEE\ DETAIL SHEET.) 6' CV & BOX FES 106 TC=1042.00 WATER TOWER W CL V O 1.92% 12' COLUMN ti sM / 12' / CONIFEROUS TREES (TYP) O BITUMINOUS DRIVEWAY 41' WATER TOWER DRIPUNE l\\\\\ \\\ \W CHAIN LINK FENCE 16' DOUBLE SWING GATE 1 8„ � l �6 F,12' RCP CL V O 1.22X CBMH 107 TC=1043.00 / INV=1037.43(E) INV=1036.31(W) SCANNED N 0 o m sM / M1K SCANNED 6" TOP6011 6 TOPSOIL I V:3H MAX SIDE SLOPE 1 VA H SLOPE BITUMINOUS DRIVEWAY UNDISTURBED, UNCOMPACTED IN -SIN SOIL, SCARIFY TO A MINIMUM DEPTH OF I T PRIOR TO PLACEMENT OF SAND MEDIA 8 ENGINEERED SOIL (INCIDENTAL) VARIES - SEE GRADING PLAN COMPOSTED TOPSOIL (4- DEPTH) POND BOTTOM TYPICAL CROSS-SECTION NTS OVERFLOW ELEVATION; "^^' `^' PRECAST OPB41NG FOI INV. 6' PRECAST -8' POURED OUTLET STRUCTURE DETAIL TOPSOIL TOP OF ENGINEERED SOIL B' BASIN BOTTOM AT 1035.00 ENGINEERED SOIL WELL BLENDED MIXTURE (BY VOLUME): 70% SAND MEETING MN/DOT 3149.21 'FINE FILTER AGG:' 25% ORGANIC LEAF COMPOST MEETING MN/DOT 3890.28 GRADE 25%SANDY LOAM TOPSOIL 103250' MEDIA, WASHED SAND, DT 3149.21 FOR FINE FILTER AGG. B" DIAMETER PERFORATED SUBSURFACE DRAIN SEE DRAINAGE PLANS FOR LOCATION GEOTEXTILE FABRIC. MN/DOT TYPE II NTS ,H CASTING R-4342 UAL 2-4 7' THICK ADJUST. RINGS W/ MORTAR JOINTS -PLASTER OUTSIDE. STRIKE INSIDE CLEAN PRECAST OPENING FOR B" PVC INV. = 1032.50' /V ALJVjV. --�MEL�Y HILCR�AA - - \ \ - f N 1 / PROPERTY UNE (TYP) l✓ � . X111 .1 1 -- , A �1/l / ..� dQ 77 r 1 i -- - / i 1�JNETONKA MIDDLE SCHOOL WEST I.S.D. 276 ✓ ` SHMELY AMMON ' PROJECT I I I II I \ LOCATION - , 1` ) SHERWIN-WILLIAMS .k VIII I ( oN k4,� etli. PHO I I:(Il0A i H&C° CONCRETE STAINS & SEALERS h&U I:UNt;Kt I t S MIN SOLID COLOR WATER-BASED 19, CONCRETE STAIN SOLID COLOR wa=.-aas<a • One gallon covers up to 250 sq. ft. (depending on porosity) • Also available in 5 -gallon pails and drums • Soap and water clean-up • VOC compliant • Ideal for high pH surfaces • Available in 8 prepackaged colors Can be tinted to most Sherwin-Williams colors! H&C' CONCRETE SEALER SOLVENT -BASED • One gallon covers up to 250 sq. ft ■ (depending on porosity) ■ •Also available in 5 -gallon pails CONCRETE SEALER and drums SOLID COLOR • Satin finish preserves delicate architectural detail • No reduction needed: apply with brush, roller, or airless sprayer • Available in 12 prepackaged colors and 60 tintable colors Before After 0 Water -Based and area. Light colors are not recommended for high -traffic areas. Gray Horizons HC140 Extra White. HCM Gull Gray • HC132 Fall Grass HC145 Pearl Gray' HC164 Patio Green' HCI 05 Silver Gray' HC124 Bombay Breeze HC146 Black' H01 08 Drive -In Twilight" HC155 May be available as a Pumiced color. Color only available in Concrete Stain Solid Color Water -Based. r] PREPARING YOUR SURFACE Preparation de la superficie Surface preparation is a critical step that ensures your coating bonds properly. Be sure to follow instructions before applying your coating. La preparacion de la superficie as un paso entice para garantizar qua el revestimiento as adhiere de manors apropiada. Antes de splicer of revestimiento, asegurese de seguir las instrucciones. Clear area to be coated. Remove oil and grease spots with H&C' De -Greaser. Rinse thoroughly. (See the i package for complete directions). Despeje of area qua sera recubierta. Elimine of aceite y sitios con grasa con of desengrasante H&C` Enjuague abundantemente. (Vee las instrucciones completas an of paquete). For bare concrete, apply H&C' Etching Solution from a plastic sprinkling can. (See the package for complete directions). Sprinkle evenly on the concrete, agitate with a stiff broom for 10 minutes or until bubbling stops. Rinse thoroughly and allow to dry completely. Para concrete descubierto, aplique soluci6n decapante H&C' con una regadera de plastics. (Vea las instrucciones completes an of paquete). Distribuya de manors uniforms sabre of concrete, agite con una escoba tiesa tlurante 10 minutes o hasta qua deje de former burbujas. Enjuague abundantemente y dale secar completamente. Inspect surface to ensure that cleaning and etching were successful. Surface should feel like 120 -grit sandpaper and be free of all dirt and concrete dust. Etch again if necessary. Wait 24 hours before applying H&C' coating. Proper etching is critical to the success of your project. Inspeccione Is superficie para garantizar qua Is limpieza y decapado son satisfactorios. La superficie dabs sentirse come si fuera un papal Iija de grano 1120 y ester fibre de suciedad y polvo de concrete. Si as necesano, vuelva a decapar. Espere 24 horas antes tle splicer of revestimiento H&C'. EI decapado apropiado as esencial para qua of proyecto tenga exits. APPLYING YOUR COATING Aplicacion del revestimiento Once you've properly prepared your surface, you're ready to apply your coating. Una vez qua he preparado Is superficie apropiadamente, estara listo para splicer of revestimiento. Trim exposed side edges for a professional look. Roll on first _ coat, continuing in the same direction until entire surface is coated. (3/8" nap soft -woven roller sleeve is recommended for optimum uniform appearance). Recorte los bordes expuestos para lograr un aspecto profesional. Aplique Is primers capa con rodillo y continue aplicando an Is misma direcci6n haste qua toda Is superficie este recubierta. (Para un aspecto uniforms optima se recomienda una felpa de rodillo de tejido suave de 3/8 pulg). Allow product to dry 12 hours before recast. Roll on second coat in the perpendicular direction of the first. Inclined areas can be textured by adding SharkGrip" Slip -Resistant Additive to the final coat (brush or roll on only). Permits qua of producto seque tlurante 12 hares antes de recubrir. Aplique la segunda caps on direcci6n perpendicular a Is primera caps. Las areas inclinadas pueden ser texturizadas of agregar of aditivo antiderrapante SharkGrip- a la cape final (con breahe o rodillo solamente). The surface will be ready for light foot traffic after one hour and for vehicle and heavy traffic after 72-96 hours. Please refer to product label for more specific instructions. La superficie estara lista para at trafico ligero de peatones despues tle una here y para of paso de vehlculos y trafico pesado despues de 72 a 96 horas. Per favor, consulte Is etiqueta del producto para instrucciones mos especificas. • SHERWIN WILLIAMS 03/07/12 CBI CHANHASSEN WT HS POLY SG TNEMEC 15BL TANK W 0 H&C® Color Palette: IMPORTANT: Color may vary slightly due to age, lighting, subst Tile Red' HC110 Naturally Red Terracotta Orange HC159 HC126 White -Washed Terracotta HC135 Terra Cotta " HC167 Aztec Send HC136 Cedarwood Brown HC103 Neutral Balance Tan HC125 Red Terramo Tile HC102 Silk Chocolate HC117 VIATEHIALS GHBALIS I _ista de verification de materiales :leaning Limpien H&C' Ge -Greaser • Desengrasante H&C" Household Bleach (optional) • Blanqueador domestico (lejia) (optional) Commercial Rust Remover (optional) • Removedor comercial de herrumbre (option) Protective Eyewear • Gatos de proteccidn Industrial Rubber Gloves • Guantes industriales de caucho tching H&C® Concrete Etching Solution Plastic Sprinkling Can Stiff Broom Sandpaper (medium) Pressure Washer (preferred) or Garden Hose with a Sharp Stream Noble and Scrub Brush Protective Eyewear Industrial Rubber Gloves fpplication H&C' Concrete Sealer Solvent -Based Paintbrush (natural) Roller Sleeve with 318" Nap. Soh -woven Roller Frame Paint tray Extension Pole H&CT SharkGripv Slip -Resistant Additive (optional) Aeanup H&C® 0.708 Solvent or Xylene Decapado • Solucum decapante de concref , H&C' • Regadera de plastico • Escoba tiesa • Papel Up, (mediano) • Lavadom de presion (de preterencia) o manguera de jardin con boquilla de chorro fuerte y cepillo para taller • Galas de proteccion • Guantes indusbiales de caucho Aplicacion • Sellador base de solvente por cemento H&C' • Brocha (natural) • Felpa de rodillo de 3/8 pulg., tejido suave • Bastidor de rodillo • Charola de pintura • Peruga de extension • Aditivo antiderrapante H&C' SharkGdlP (opcional) Limpieu • Solvente H&C' D-110 o xileno WHERE TO USE H&C CONCRETE FINISHES SHERWIN—WILLIAMS H&Ca CONCRETE COATINGS 101 PROSPECT AVE. CLEVELAND. OHIO 44115 1-800-867-8246 WWWHCCONCRETE.COM 0 for Concrete Stain Solid Colo ..oncrete Sealer Solvent-Based j Re variances, or application conditions. Always perform a sample tes l SandstoneHC157 Hint of Gray HC156 Bombay' HC133 Muddy Gray HC172 Cemented Deal HC141 Autumn Brown' HC101 Siberian Haze HC149 Charred Walnut HC109 Fresh Concrete HC165 Cabernet Brown" HC107 PRODUCT INFORMATION Information de productos With H&C" stains and sealers, it's easy to add beauty and protection to driveways, walkways, patios, garage floors, and other concrete and masonry surfaces. Refer to the following product descriptions and the "Where to Use" chart. Then follow our easy, step-by-step instructions for preparing your surface and applying your coating. For more detailed guidelines, please visit our website at www.hcconcrete.com. Con los selladores y tinturas H&C", as sencillo agregar protecci6n y belleza a las entradas de cocheras, senderos, patios, pisas de cochera y otras superficies de concreto y mamposteria. Consulte las siguientes descripciones de los productos y Is table "Usos'.' Luego, simplemente siga nuestras sencillas instructions paso a paso para preparar Is superficie y aplicar el revestimiento. Si desea pautas mis detalladas, por favor visitenos an Internet en www.hcconcmte.com. �" H&C® Concrete Sealer Clear Gloss • A solvent -based sealer formulated with acrylic and silicone resins. CONCRETE SEALER CLEAR GLASS • An excellent topcoat for H&C® Solvent -Based Concrete Sealer for added protection and additional gloss. p EI Sellador concreto Vacia Brillo de aceite H&C® • Un sellador a base de solvents formulado con resinas acrilicas y de silicone. • Una excelente caps final para el sellador de concreto de acrilico y silicone H&C% qua ofrece protecci6n y brillo adicionales. H&Ce SharkGrip® Slip -Resistant Additive • Provides a slip -resistant surface when added to +.=eesisiaxuocr..; the topcoat of any H&C- concrete coating. • Mixes easily into coating. r. • More pleasant to walk on in bare feet than sand SHAR texture aggregates. Aditivo antiderrapante H&C® SJF"Rcslsra SharkGrip® auofivE '' • Ofrece una superficie antiderrapante al agregarse a Is caps final tle cualquier revestimiento de concreto H&C®. • Se mezcla fecilmente con el revestimiento. • Es mils agradable caminar descalzo sobre estas superficies que sobre los agregados de texture de arena. H&C® Concrete Etching Solution • Creates a porous surface. • Prepares surface to be coated. • Increases bond on H&C- concrete coatings. Solution decapante de concreto H&Ce ��tf anm 41. • Crea una superficie porosa. • Prepare Is superficie para ser recublerta. • Increments Is adhesion de los revestimientos de concreto H&C%. H&C® Cleaner De -Greaser • Removes grease and oil stains. • Prepares surface for staming/sealing. • Use full strength for tough stains or diluted for r milder cleaning. Desengrasante de concreto H&Ce • Elimina las manchas de grass y aceite. • Prepare Is superficie para Is tintura/sellado. • Uselo sin diluir para las manchas dificiles a diluido para una limpieza leve.