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PC SUM 2014 10 21 CHANHASSEN PLANNING COMMISSION REGULAR MEETING SUMMARY MINUTES OCTOBER 21, 2014 Chairman Aller called the meeting to order at 7:00 p.m. MEMBERS PRESENT: Andrew Aller, Mark Undestad, Lisa Hokkanen, Kim Tennyson, Steve Weick and Dan Campion MEMBERS ABSENT: Maryam Yusuf STAFF PRESENT: Kate Aanenson, Community Development Director; Bob Generous, Senior Planner; and Alyson Fauske, Assistant City Engineer PUBLIC HEARING: TWIN CITIES SELF STORAGE: REQUEST FOR AN AMENDMENT TO CONDITIONAL USE PERMIT 1987-02 TO INCREASE THE NUMBER OF STORAGE BUILDINGS; AND SITE PLAN REVIEW FOR FIVE ADDITIONAL STORAGE BUILDINGS ON APPROXIMATELY 16.5 ACRES OF PROPERTY ZONED BUSINESS FRINGE (BF) AND LOCATED AT 1900 STOUGHTON AVENUE AND 1875 FLYING CLOUD DRIVE (CR 61). APPLICANT/OWNER: BRUCE LAMO, TWIN CITIES SELF STORAGE, CHASKA LLC, PLANNING CASE 2014-31. Bob Generous presented the staff report on this item. Chairman Aller asked about timing for phasing in the new buildings, grading, and stormwater ponding. Commissioner Campion asked about the landscaping plan. The applicant, Bruce Lamo addressed the issues of landscaping, and phasing for constructing the new buildings. Chairman Aller opened the public hearing. James Kavorian, 1905 Stoughton Avenue expressed concern with lighting and questioned whether there was going to be an additional entrance to the site. The public hearing was closed. After comments from commissioners, the following motion was made. Hokkanen moved, Campion seconded that the Chanhassen Planning Commission recommends that the City Council approve the amendment to the Conditional Use Permit to allow 11 storage buildings for cold storage and warehousing; and site plan review for five 14,250 square foot one-story storage buildings subject to the following conditions and adopts the Findings of Fact and Recommendation: Conditional Use Permit 1.The 60 parking stalls for vehicle storage shall be confined to the area labeled Building P4. 2.The development shall comply with site plan 2014-31, plans prepared by Carlson McCain dated September 5, 2014. Site Plan Planning Commission Summary – October 21, 2014 Building: 1.The buildings are required to have automatic fire extinguishing systems. 2.Building plans must be prepared and signed by design professionals licensed in the State of Minnesota. 3.Retaining walls over four high must be designed by a professional engineer and a permit must be obtained prior to construction. 4.Detailed occupancy related requirements will be addressed when complete building plans are submitted. Engineering: 1.The applicant must provide adequate evidence that there is no area on the subject property suitable for infiltration. The discussion must include the practicality of altering the site layout. 2.The hydrologic modeling must be completed with accepted literature values for the soil type present or the applicant must provide evidence that the infiltration rates are equal to the 3.97 inches per hour assumed for the model. The applicant must provide water quality modeling, acceptable under Section 19-144(a)(1)c. of Chanhassen City Code, showing that the water quality treatment conditions are met for the required water quality volume from all new impervious surfaces. 3.A comprehensive, standalone SWPPP document with all elements required by Part III of the NPDES construction permit, the provided checklist and Section 19-145 of city code shall be prepared and submitted to the City for review and comment before any earth-disturbing activities, including but not limited to removal of any existing surfaces or structures, and removal of vegetation will be allowed or any grading permit will be issued. 4.The conveyance must be stabilized along the entire length and energy dissipation and erosion prevention practices must be designed and implemented to protect the infiltration basin from unnecessary sediment deposition. 5.The applicant shall include a materials list and engineers opinion of cost for all items necessary to meet the SWPPP requirements for erosion prevention and sediment control including the materials necessary for six (6) inches of topsoil and final stabilization. This amount shall be collected as escrow for erosion control. 6.The applicant shall prepare an operations and maintenance manual for the channel. 7.Assurances shall be provided for the conveyance channel consistent with the MS4 permit requirements for systems not owned and maintained by the MS4 permittee. Specifically: a.It must allow for the city to conduct inspections, perform maintenance and assess costs when the permittee determines that the owner and/or operator of the structural stormwater BMP has not conducted maintenance. 2 Planning Commission Summary – October 21, 2014 b.It must include conditions that are designed to preserve the permittee’s right to ensure maintenance responsibility...when those responsibilities are legally transferred to another party. c.It must include conditions that are designed to protect/preserve structural stormwater BMPs and site features that are implemented to comply with Part III.D.5.a(2). If site configurations or structural stormwater BMPs change, causing decreased structural stormwater BMP effectiveness, new or improved structural stormwater BMPs must be implemented to ensure the conditions for post-construction stormwater management in Part III.D.5.a(2) continue to be met 8.The applicant must procure and comply with the requirements of all other jurisdictional agencies with authority over the project area. 9.The plan shall be redrawn to 50-scale or larger, and must show the location of the benchmark used in the survey. 10.The first floor elevation and corner elevations of the nearby buildings must be labeled to confirm that the grading will allow water to flow away from all structures onsite. 11.The pond’s Emergency Overflow Elevation and location must be shown on the plans. 12.Due to the location of the open channel drainage, the developer’s engineer shall submit phased grading and erosion control plans. The plan phasing shall illustrate the erosion control that will be in place as the different buildings are constructed in Phase 1 through Phase 4. 13.The plan sheets must identify any proposed stockpile locations and the erosion control measures to contain them. 14.The aisles around the perimeter of the buildings must meet a minimum of width of 30 feet to allow 8-foot parking on one side and a 22-foot driving aisle. 15.The corners of the parking lot shall be modified to provide adequate aisle width. Environmental Resources Specialist: 1.The applicant shall provide landscape buffers to the north of buildings P2, P3 and P4 and the west of P3. The required number of trees for the vehicular use area shall be incorporated into the buffer landscaping. 2.The applicant shall submit a revised landscape plan showing the additional buffers as well as an alternate selection to blue spruce. Fire: 1.The new buildings will be required to have an approved fire sprinkler suppression system installed. Plans shall be drawn by a sprinkler design professional and submitted to Chanhassen Fire Marshal for review and approval. 3 Planning Commission Summary – October 21, 2014 2.Twelve-inch building address numbers must be installed on each end of the building. Numbers must be of contrasting color. Contact Fire Marshal for additional information. 3.“No Parking Fire Lane” signs will be required. Contact Fire Marshal for specific areas to be signed. Planning: 1.The applicant shall enter into a site plan agreement with the City and provide the necessary security to guarantee erosion control, site restoration and landscaping. 2.The applicant shall create a zoning lot and recombine the two properties as one parcel. All voted in favor and the motion carried unanimously with a vote of 6 to 0. PUBLIC HEARING: 7015 SANDY HOOK CIRCLE: REQUEST FOR A VARIANCE TO EXCEED THE IMPERVIOUS SURFACE LIMITATION TO CONSTRUCT A DRIVEWAY ON PROPERTY ZONED SINGLE FAMILY RESIDENTIAL (RSF) AND LOCATED AT 7015 SANDY HOOK CIRCLE. APPLICANT/OWNER: RICK KOLBOW, PLANNING CASE 2014-32. Bob Generous presented the staff report on this item. Chairman Aller asked for clarification on issues involved with this being a sub-standard lot size of 12,600 square feet and challenges associated with the installation and maintenance of a rain garden. The applicants, Rick and Julie Kolbow discussed the reasons for the variance. Chairman Aller opened the public hearing. No one spoke and the public hearing was closed. After comments from commissioners the following motion was made. Undestad moved, Campion seconded that the Chanhassen Planning Commission, acting as the Board of Appeals and Adjustments, approve Planning Case 2014-32 for a 2.7 percent hard surface coverage variance to allow parking area and driveway expansion on property zoned Single Family Residential District subject to the alternate Findings of Fact and Decision.Undestad, Campion and Aller voted in favor. Weick, Hokkanen and Tennyson voted against the motion. The motion was tied with a 3 to 3 vote. This item goes to the City Council on November 10, 2014 due to not passing by a super majority. APPROVAL OF MINUTES: Commissioner Hokkanen noted the verbatim and summary Minutes of the Planning Commission meeting dated October 7, 2014 as presented. COMMISSION PRESENTATIONS. None. 4 Planning Commission Summary – October 21, 2014 ADMINISTRATIVE PRESENTATIONS. Kate Aanenson discussed actions taken by the City Council at their October 13, 2014 meeting and reviewed items on upcoming Planning Commission agendas. Undestad moved, Tennyson seconded to adjourn the meeting. All voted in favor and the motion carried unanimously with a vote of 6 to 0. The Planning Commission meeting was adjourned at 7:45 p.m. Submitted by Kate Aanenson Community Development Director Prepared by Nann Opheim 5