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�Bonestroo <br /> 0 Rosene <br /> emo �,����s <br /> Engineers 6 Arc�itects <br /> Project Name: Water Street Homes Client: City of Orono <br /> To: Tom Kellogg File No: 139 General <br /> From: Sherri Buss Date: March 17, 2006 <br /> Re: Comments on Slope Stabilization and Planting <br /> Remarks: The area proposed for stabilization has steep slopes (steeper than 2:1) and is shady. Based on <br /> these conditions, our recommendations for the area as follows: <br /> 1) Slope should be stabilized using either double-sided wood fiber blanket or coconut fiber blanket. The straw <br /> blanket shown on the plan does not provide enough stabilization with slopes as steep as those on this site. <br /> . <br /> (See MnDOT Seeding Manual 2000 if needed.) <br /> 2) The blanket needs to be installed carefully, using the manufacturer's directions. Specifically, the leading <br /> edge (at the top of the slope) needs to be trenched in, using a 6" trench that is back-filled and compacted. <br /> The blanket needs to be installed perpendicular to the contours. It needs to be adequately stapled, based <br /> on the manufacturer's directions for steep slopes—this step is often not followed adequately at installation. <br /> 3) The contractor/owner needs to identify a seed mix that is suitable to shady conditions. The proposed seed <br /> mix species list should be submitted, and reviewed by the City. Most wildflower mixes or MnDOT native <br /> seed mixes are designed for sunny conditions. <br /> 4) Annual rye grass is shown as a cover crop. Annual rye is suitable only with spring plantings. If planting <br /> occurs in the fall, another cover crop needs to be selected. <br /> Bonestroo,Rosene,Anderlik and Associates,Inc. www.bonestroo.com <br /> ❑St Paul Otfice: O Milwaukee Office: O Rochester OHiee: 0 St Cbud Office: O Libatyville Offlce: <br /> 2335 West Highway 36 12075 N.Corporate Parkway,Ste 200 112 7�"SVeet NE 372123�^Street S 1860 West Winchester Rd,Ste 106 <br /> St Paul,MN 55113 Mequon,WI 53092 Rochester,MN 55906 St Cloud,MN 56301 Grayslake,IL 60030 <br /> PMne:651-6364600 Phone:262-64}9032 Phone:507-282-2100 Phone:320.251-4553 Pfwne:847-54&6774 <br /> Fax:651-63E1311 Fax:262-241-4901 Fax 507-282-3100 Fax:320-251-6252 Fax:847-548-6979 <br />