10-26-1998 Council Packet - Laserfiche WebLink

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^ I Bonestroo Rosene Anderlik & iVll Associates Engineers & Arcnitects Bonestroo Rosene. Anderhk Associates Inc is an Affirmative Action. Equal Opportunity Employer Principals 0:io G Bonestroo. PE • Joseph C Arde'i»V. PE • Vi.nvm L Sorv.ift^. PE • RichtircJ F Turner, PE • Glenn R Cook. PE • RoOer* G Schunicht. PE • Jerry A Bourdon. PE. • Rooert W Rosene, PE and Susan M Eberim. CPA Senior Consultants Associate Principals Howard A Sanford. PE • Keith A Cordon. PE • Robert R Pfefferle. PE • Richard V/ Fester. PE • David O Losknia PE • Robert C RusseV. A IA • Mark A Hanron. PE • Michael T Rauimann. PE • Ted K Field. PE • Kenneth P Anderson. PE • Mark R Rolfs. PE, • Sidney P Williamson. P£. L S • Robert F Kotsmith • Agnes M. Ring • Michael P Rau. PE. • Allan Rick Schmid:. PE Offices St Paul Rochester. Wilimar and St Cloud. VN • Mi:.vaukce. Wl Website w^w bonestroo com October 14, 1998 Elizabeth VanZomeren City Planner/Zoning Administrator City of Orono Post Office Box 66 Crystal Bay, MN 55323 Re: Paul Phillips Subdivision File No. 139-2430 Dear Liz: We have reviewed the preliminary plat for the proposed two lot Phillips subdivision. The site is located north of County Road 6 between North Brown Road and Willow Drive in the southwes* quarter of Section 27. We have the following comments in regards to engineering matters. 1. Access: An existing, driveway along the west side of the property currently provides access to this site and to the property located north and west of the Phillips property. Access to the proposed Lot 2 would either be from the existing driveway or directly off of County Road 6. The private driveway sh ju!d reconstructed to a minimum paved width of 28 feet to meet current City standards for a pnvate street serving 3 to 10 units if access to Lot 2 is from the shared driveway. The private street design should include a cul-de-sac to provide room for emergency vehicle turning movements. An Outlot with adequate right-of-way should be platted for the proposed private driveway. Hennepin County should review and comment on the proposed access. Plans and specifications for any street improvements should be provided for review. 2. Grading: A grading and erosion control plan for the entire site should be submitted for review. Erosion control measures should be in place prior to any grading. Additional erosion control will be needed during construction of the house and septic system. 3. Drainage: The draft version of the City’s’ Comprehensive Storm Water Management Plan (SWMP) shows that the site drains westerly to an existing wetland identified as LL-P4. Phosphorous loadings leaving tl> le should be limited to a maximum of 0.28 pounds/acre/year. A m:'jority of the site currently urains to an existing low area west of the septic locations on Lot 2. This depression may provide an ideal location for a water quality pond that could provide rate control and nutrient removal of storm water leaving the site. Plans should be submitted to the Minnehaha Creek Watershed District for their review. A drainage area map and ponding calculations should be provided with the final plan ser. 4. Easements: Drainage and utility easements should be provided 5 feet wide along all interior lot lines and 10 feet wide along the roadway rignt-of -ways. Drainage easements should be provided acioss all wetland, drainage way and porJ areas. 2335 West Highway 36 • St. Paul, MN 55113 • 612*636*4600 - Fax; 612*636-1311