01-19-1999 Planning Packet - Laserfiche WebLink

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J Bonestroo ff=iS Rosene Anderlik & ^ V]^ Associates Bontstroo, Rosene. AnBtrUk snd Associates, Inc. Is sn ANirmstive Action/fquei Opportunity imployer Principals: Otto 6. ton«itfOO. PJL • Joitph C. Andtrllii. PL • Mjrvir. I -'x P.£ • lichjrd E. TUmcr. PL, • Glenn t. Cock. PL. • Robert a Schunicht PE •M . Bourdon. PL • Robert w. Roiene. PL and Susan M. CberlJa CAA^ Senior ConsuUams H Aiioc/Jft Principolv Howard A. Sanford. PL, • Kelin A. Cordon. PJ. • i H . Pfefferle. PL • Rkhard W. Poster. PX • David O. loskota. PX • Robert C Ruisek, KU B ; A. Hansoa PL • M^hael T. Rautmara PX • Ted K^ield. PX • Rennem P. Anderson. PX . I Rolfs. PX • Sidney P. Winiamson. PX. LI • Robert P. Kotsmlch • Agnes M. Ring • Mlcnaei P. Raa PX • Allan Rick Senmidt. PX Engineers & Architects December 30,1998 Offices: Sr. Paul. Rochester. Willmar and St. Cloud. MN • Milwaukee. Wl WeOsJte: www.bonestroacom Elizabeth Van2U>mereii City Planner/Zoning Administrator City of Orono Post Office Box 66 Crystal Bay. MN S5323 Re:Glenn Gronberg Subdivision File No. 139-2430 Dear Liz: We have reviewed the preliminary plat for the proposed two-lot Gronberg subdivision. The site is located west of Willow Drive and north of Woodhaven Drive in the southeast quarter of Section 33. We have the following comments in regards to engineering matten. 1.Access: Access to the existing home on the property Is across a private driveway located on Outlot A between the Grcr.berg site and Willow Drive. The existing driveway has a gravel surface and serves two other properties north of Outlot A. Access to the proposed Lot 1 would be across the existing driveway. The drawing that was submitted shows the proposed Lot 1 abutting Outlot A at a 23-foot width. To be consistent with City standards we recommend that Outlot A be extended westerly approximately 280 feet at a 30-foot width along the south side of proposed ^t 2.A cul-de-sac should be constructed at the westerly end of Outlot A to provide room for emergency vehicle turning movements. The private driveway should be reconstructed to a minimum paved width of 24 feet to meet current City standards for a private street serving 3 to 6 units. Plans and specifications for any street improvements should be provided for review. Preliminary plans from MnDOT indicate that this property will be impacted by the proposed T.H. 12 realignment Plans should be submitted to MnDOT for their 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 g^ing. Additional erosion control will be needed during construction of the house and septic system. 3.Drainage: A drainage area map and drainage calculations for pre and post development conditions should be submitted for review. Phosphorous loadings leaving the site should be limited to a maximum of 0.28 pounds/acre/year. Storm drainage impacts to the existing properties south of the site should be reviewed. Ponding does not appear to be practical on this site however, some sort of best management practice (BMP) such as vegetated buffer strips may be effective in treating runoff leaving the site. Plans should be submitted to the Minnehaha Creek Watershed District for their review. 4.Easements: Drainage and utility easements should be provided 3 feet wide along all interior lot lines and 10 feet wide along the roadway right-of -ways. Drainage easements should be provided across any drainage ways. 5.Financial Guarantee: When the plans have been completed we can prepare an estimate of the total cost for the street improvements to determine the amount of the financial guarantee required if the City so desires. Please contact me at (6044863) if you have any questions regarding this matter. Yours very truly, BONESTROO. ROSENE, ANDERLIK & ASSOGATES. INC. /^TTf Tom Kelloggw Cc: Greg Gapoa. Citv of Orono •f 233S West Highway 36 ■ St. Paul, MN SSII3 • 6t2-636-4600 . Fax: 612-636 I3H