05-19-1997 Planning Packet - Laserfiche WebLink

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r BONESTROO AND ASSOCIATES ©612 6361311 05/15/97 g :02/03 N0:061 ^ J Bonestroo Rosene Anderlik & \ Associates Engineers & Architects ""wK/v-Wi OttoCi 8i«n*»ltiin t*| • ju'.rpti I M •M nvixi 1*1 • lf«h.tt.ir lirfocr. Pf .f.irmw C,„. ^.y . U,u„..«f .><.( Vcumu M I > . h-f<, A MA .fJ„,| rr • Su\.v> M ht»;il«i C k-A Woioi «;i:iivviil..nt'. M.5SV...U A PI .l-r.inA. C j'J-m. Pf • B„nk.i PIai Ia ,,, i j . W r„w.f Pt . Ujv.il <1 lAtvol.) rr .kcrutc !»«>.« A iA .Mj.kA Pt . V.CI.P.I T «..ucm,inn PC • Vrt k Pf . »i-nooth P A,.iir.-,.ri ft . M.«t u tinm Pt . r- rc i \ • r knf.rn.T-* Otfurt NT P.»ui. Pi.« heMr; .inn Nt CIOuJ • Mtl^uyn Wi May 15. 1997 Mr. Michael P. Oaffron Assistant Building and Zoning Administrator City of Orono Post Office Box 66 Crystal Bay, Minnesota 55323 Re: Garden Lane Site Sketch Plan File No. 139-2239 Dear Mike, We have reviewed the sketch plan prepared for Jim Waters on the proposed Garden Lane Site, a seven-lot subdivision of Lot 2. Block 1, Heatliercroft and Lot 90, Tonkaview Gardens, located we.si of Wildhuist Trail in the west half of Section 7. There are several issues that need to be addressed relative to engineering matters and included with the plan. 1. UtlUtles: A sanitary sewer will need to be extended north along WildhuiM Trail approximately .310 feet to the adjoining lot line between Lots 5 tuid 6 and then westerly and northerly to the end of the northerly cul-de-sac. Sewer service can be provided from Tonkaview Lone. However, 200 feet of existing sewer must be replaced at greater depths. Plans and specificuiions .should be prepared for the sanitary .sewer and street recon.struclicn ot eitlier Tonkaview Lane or Wildhurst Trail, with us-buili plans provided to the City upon completion. As this sanitary sewer and street will be owned and maintained by the City, wc recommend that the design, bidding and cunsuuction be done by the City with assessments levied to the development. Please note there is no municipal water service available for this area. Each lot wiH be required to be served by a well. 2, Streets! The propo.sed street locution appears acceptable. There should be some provision to provide street access to the City Park north of the development. This could be done by providing a driveway to the Park from the cul-de-sac, constructing the cul-dc-sac within the Park, or eliminating the cul-dc-sac and creating a parking/tumiiround urea within the Park property. The easterly cul-de-suu should drain west to a storm sewer line whicit would run westerly and northerly to the end of the cul-dc-sac. Drainage could be routed to the ravine on Lot 2. Plans .should be prepared for the street and stonn sewer con.struction. 3. Grading: A grading, drainage and c»x>sion control plan should be prepared that shows both the existing and proposed contours, building pad locations and elevations, and erosion control measures to b« used during construction. 4. Drainage: There are two major drainage ways running through the property. One is located at the northern end of the site which drains northeasterly through Lot 2. The other is located at the southern end of the site which drains easterly through Lots 6 and 7. We recommend that the majority of the drainage from the site be directed to north. The north ravine gradient is half o.s steep as the south ravine which will allow more options to handle the storm water runoff. .Some type of stormwater retention and/or flow reduction structure (or other type of improvement) should be installed within this ravine. 2335 West Highway 36 • St. Paul, MN 55113*3898 ■ 612*636*4600