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• Planning Commission Report Silver Lake Commons Development Review Planning Case No. 487-97 • June 18, 1997 Page 3 • The grading of the site also received comments, specifically the lack of slopes for the ditch, parking lot and pipes. The parking lot is relatively flat which provides for poor drainage. Problems such as standing water and ice patches in the winter may result from the flat slope. In addition, the site plan does not show any contours for the pond proposed at the southeast corner of the development. Given its location near pedestrian traffic and within a residential development, safety is a top priority. Mr. Keehn suggests that at a minimum, a 10:1 slope should be used with a water depth of no more than four feet. Mr. Keehn's final comment concerned the summary-nature of the hydrologic calculations. All of the drainage calculations and input data used to determine elevations and pond size will,need to be provided. There has been some discussion with the applicant about piping the water to the wetland on the D.W. Jones property and creating a detention pond (for water quality purposes) on that property in cooperation with the property owner. The applicant is seeking a discussion with Dale Jones, the property owner, about this idea. Mr. Keehn recommended this approach because he felt it would be better if the detention pond were off the site, given it is being developed with multiple family housing. Staff is proposing that these drainage issues be addressed between this meeting of Planning • Commission and your next meeting. Access: Access to the site will be accomplished with a single entryway south of the existing Red Oak Apartments entryway. The drive access will be in between the apartments and the townhome units. The existing driveway servicing Red Oak Apartments will be removed. The driveway is shown at a 24-foot width. Comments received back from the Fire Marshal raised two issues, one of which concerned the access. The Fire Marshal would prefer a 28-foot wide access road which would allow for better access to emergency vehicles. The applicant will need to adjust the site plan to accommodate any necessary changes made to the access roads. The Fire Marshal's other concern regarded the provision of a fire hydrant on the property. Landscape Plan: The 11" x 17" plans submitted by the applicant include a landscape plan which has been forwarded to the Rick Wriskey, Mounds View's City Forester. In addition, the applicant provided on Friday, June 13, a revised landscaping plan(24" x 36")which changed some of the plant materials. The original landscape plan was referred to the City Forester for review. We have not had an opportunity to refer the later plan, but will after the Planning Commission meeting on June 18. The applicant has indicated a desire to retain significant trees on the site where possible. Staff received the following comments from the City Forester on the proposed landscape plan: • Trees proposed to be preserved must be fenced during construction. Care must be taken to • protect the area surrounding each tree equal to its dripline. No heavy machinery or equipment shall enter within these areas so as to protect fragile root systems.