06-15-1998 Planning Packet - Laserfiche WebLink

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Boneitroo. Rosene, Anderiik ^nd Associates, tnc is Affirmj: •/- Action/£qual Opportunity Employer Principals: Otto G. Bonestroo. PE. • Joseph C. Andcflik. PE. • Marvtn L. Sorvala. PE. • Rjchard E. Turner. RE. • Glenn R. Cook. PE. • Robert G Schumchi. PE. • Jerry A Bourdon. PE • Robert W. Rosene. PE. and Susan M Eberlm. C PA.. Senior Consultants Associate Princ/pa/j Howard A SanfoiJ. PE. • Keith A. Cordon, PE. • Robert R. Pfefferfe. RE. • Richard W. Foster, PM. • David O Loskota. PE. • Robert C Russek. A.I.A. • Mark A Hanson. PE • Michael T. Rauimann. PE. • Ted K Field. PE • Kenneth P. Andersoa PE. • Mark R. Rolfs. PE • Sidney P Williamson. PE., LS. • Robert F. Kotsmuh • Agnes M. Ring • Michael P Rau. PE • Allan Rick Schmidt. PE. Offices: St. Paul. Rochester. Wilimar and St. Cloud. MN • Milwaukee. Wl U'eOsite www.bonestroo com 1/1 Bonestroo Rosene Anderiik & Associates Engineers & Architects June 8,1998 Elizabeth VanZomeren City Planner/Zoning Administrator City of Orono Post Office Box 66 Crystal Bay, MN 55323 Re: Valerius Subdivision File No. 139-2383 DearLiz: We have reviewed the preliminary plat for the proposed two-lot subdivision for Christine Valerius. The site is located at 3750 Bayside Road (C.R.84) north of Bayside Road and south of the Luce Line Trail in the north half of Section 5. We have the following comments in regards to engineering matters. 1. Access: The existing access to the site is a private driveway off of Bayside Road. A shared driveway located west of the existing access serves two adjoining properties located south and west of the site. The shared driveway crosses the southwest comer of the subject property. It may be appropriate from a safety perspective to combine the two driveways and have just one access onto the County Road. Hennepin County should review and comment on the plans. 2. Utilities: The well location for the existing house should be shown on the final plans. Sanitary sewer exists along the north side of Bayside Road. A service wye will need to be cut into the existing 10-inch PVC sewer to serve Lot 1. Utility construction plans should be submitted for review. 3. Grading: grading and erosion control plan for the entire site should be submitted for review. The NWL and HWL of the existing wetland on the north end of the property are 932.5 and 934.6 respectively. The basement elevation on Lot 1 should be designed accordingly. Erosion control measures should be in place prior to any grading, particularly along the wetland and County Road. Additional erosion control will be needed during construction of the home on Lot 1. 4. Drainage: The draft version of the City’s Comprehensive Storm Water Management Plan (SWMP) shows that the site lies within the Stubbs Bay drainage district. The south half of the site drains southerly to Stubbs Bay. The north half of the site drains northerly to an existing wetland identified as SB-P9.1 on the SWMP. According to current Minnehaha Creek Watershed District (MCWD) rules, subdivisions larger than 2 acres require the construction of a NURP pond to treat stormwater from the site. This subdivision is larger than 2 acres and the MCWD should review the plans. Phosphorous loadings leaving the site should be limited to a maximum of 0.28 pounds/acre/year. A drainage area map with pre and post development calculations should be submitted for review. _________________________________________ 2335 West Highway 36 - St. PauL MN 55113 ■ 612-636-4600 • Fax: 612-636-1311