09-20-2010 Planning Commission Packet

Home Browse Search

PC Exhibit G 1 ' � . 2335 Highway 36 W • St.Paul,MN 55113 Te1651-636-4600 Fax 651-636-1311 www.bonestroo.com May 3, Zo�o � . � �Bonestroo Melanie Curtis � c Planning and Zoning Coordinator ' City of Orono Post Office Box 66 Crystal Bay, MN 55323 Re: 2423 Shoreline Drive (Navarre Retail Center) � . Fle No. 000139-10000-1 File No. 10-3468 Dear Melanie: We have reviewed the plans and preliminary plat for the proposed retail center at 2423 Shoreline Drive. The plan is dated 4-20-10. We have the following comments with regards to engineering matters: � • The plan should show perimeter drainage and utility easements 5-feet wide along all interior lot lines or adjacent to piatted property with existing easements and 10-feet wide along the exterior lot lines. • More details and drainage calculation should be provided for the site. Specifically include the following for the shallow retention basin: elevations, soil materials, plantings, and outlet information. • Proposed contours and drainage details should be shown on the grading plan. In addition, more grading details, including spot elevations and labeled design contours should be shown around the proposed building. • The existing contour elevations on the grading plan should be legible. • Top and bottom of wall elevations should be shown for all proposed retaining walls. Engineered design and details should be submitted for review and approval for all retaining walls over four in height, and for all tiered walls with a separation of less than two times the wall height. • Maximum allowable slopes are 3:1. The grading plan shows 2:1 slopes to the south properly line in the southeast corner of the lower parking lot. Correcting this may require a retaining wall or grading easements from the neighboring property. • Approximately two-thirds of the rear parking lot drains overland to the west across the Kelley Cove Homeowners Association properly to Lake Minnetonka. The City should consider requiring the applicant to collect, manage, treat,and convey the storm water to the Kelley Parkway right-of-way with a storm sewer system. Consideration should be given to the down stream storm water system as well. • The eight parking stalls and associated curb in the northeast upper lot should be extended to 20 feet instead of the 17 feet shown. • Pavement design information should be provided for the proposed parking lots. • The proposed retaining walls must not be located in the Kelly Avenue right-of-way. • The plans should be submitted to Hennepin County for review and approval. • The applicant will need to provide a Storm Water Pollution Prevention Plan as required by Orono's Land Use Code Chapter 79, Section 79-7(c)(2).