Laserfiche WebLink
Bonestroo <br />Rosene <br />Anderlik & <br />Associates <br />Engineers & Architects <br />September 12, 1993 <br />Ono G Bonesnxx PE <br />PoOeri W ftcMerv. PE • <br />Joiept) C Anderlik. PE <br />Marvin L Sorvau. PE. <br />Ptcrtard E Turner. PE <br />Glenn R Ccx3k. PE <br />Thorrvis E Noyei PE <br />Rtobert G Schurx/H. PE <br />SuianM Et wCPA <br />•Senor Ccx^^jRar* <br />Mowaid A Sanford PE. <br />iCerm A Gordon, PE <br />Rooert R PfWterle. PE <br />Rcnaid W Posier. PE <br />Oavid O LDSkoca. P£ <br />Rooen C Ruisek. AiA <br />Jerry A Bou»don, PE <br />Mark A Hanjon. T E <br />Mchae* T Rammam. PE <br />Ted K PuM. PE <br />Thomai R Andetvyi. AIA <br />Donald C BufgartX. PE <br />Thomjt E Angulo PE <br />lynaei Marurva. PE <br />M<hae< P Ran. PE <br />Agnes M Rmg. AIC P <br />Ptkio J Pyne PE <br />Thomas W Peterson PE <br />Mchaei C Lynch PE <br />James R Maursd. PE <br />Jerry D Ptoncrt. FE <br />Scoo J Arganek. PE <br />Kervsetn P Anderson. PE <br />Uvfc P «QPl PE <br />Mark ^ PE <br />Gary JL Monen. PE <br />Oan«« J Edgerton. PE <br />A RKk SchmidL PE <br />Pnap J CasN^. PE <br />Mam O vud*i Pc <br />Maes B Jer>sen. PE <br />L PhiBo Gravel PE <br />Karen L Wtemen PE <br />Gary O Knvo/ia. PE <br />F Todd Poster PE <br />Keith R rapa PE <br />Oou^s J Beno«L P£ <br />Shawn O Gustafson PE <br />Ceoko 0*rv»ef PE <br />Paul G Heuer. PE <br />John P Gorder. PE <br />Charles A E/ickson <br />Le M Pawetsky <br />Hanm M Orsgn <br />James F Enge hafol <br />\ <br />Ms. Jeanne A. Mabusth. <br />Building and Zoning Administrator <br />City of Orono <br />Post Office Bo,x 66 <br />Crystal Bay, Minnesota 55323 <br />Re: Three Star Trucking Subdivision <br />File No. 139-1S62 <br />SEP 1 5 -^993 <br />Dear Jeanne, <br />We have reviewed the preliminary plat and grading plan for Three Star Trucking located <br />north of Watertown Road in the Southeast Quarter of the Southeast Quarter of Section <br />33.There are several issues that need to be addressed regarding the grading, drainage, <br />and pond design for the subdivision. <br />The drainage for this property is an important issue due to the fact that much of the <br />runoff currently drains easterly through the developed properties in the Daniels Long <br />Lake Heights Addition. Tlie drainage swale along the east property line must be <br />lowered to control the runoff within the subdivision. We recommend e,xtending the 1020 <br />contour 50 feet to the south and providing a 1021 elevation at the southeast property <br />corner. Tliis allows a 0.5% grade on the ditch while keeping it lower than Lots 12 and <br />13 in the Daniel’s Long Lake Heights Addition. The ditches along the cul-de-sac and <br />Watertown Road must be set at least 2.5 feet below the proposed centerline street <br />grade. <br />Because the aiternate septic site on Lot 7 is sho'.vn at elevation 1027. the high water <br />level of the existing pond on Lot 8 should be 1024. An outlet ditch should be provided <br />for the pond to .set the normal water level at 1023.5. <br />Calculations for the site runoff before and after development should be provided. The <br />proposed culvert sizes and grades should be shown on the plan. The proposed holding <br />pond shown on Lot 4 should be designed with an outlet control to store a 100 year <br />rainfall event with a restricted outflow. Calculations should be provided which show the <br />pond volume, high water level and peak flows. The plans should be sent to the <br />Minnehaha Creek Watershed for their approval. <br />The proposed cul-de-sac is approximately 1000 feet in length which is the ma.ximum <br />2335 West Highway 36 • St. Paul, MN 55113 • 612-636-4600