05-28-2002 Council Packet - Laserfiche WebLink

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^ I Bonestroo Rosene Anderlik & |\|| Associates Engineers & Architects Bontsiroo. Moivnc. Andwriik And AstociAftt. tnc. Ii an Affirmative Actton/Cqual Opportunity Employer V'V. and Employee Owned ^ Principalt: Oflo G Boneufoo Pf • M.*rvin L Sofviii.« PC • Gienn P Cook. PC • Robert G Schonichi PC • Jerry A Bourdon PE May 9,2(X)2 Senior Contultantir Poberr W Posen**. PC • Joseph C Anderltk. PC • Pich.ud C Turner. PC • S usao M Cberiin. C PA Aisociaie Principait: Heiin a Gordon Pf • Poberl P Pfefferle PC • Pich.ud W Foster. PC • David O lovkoia Pf • Mark A Hanson. PE • Michael T P.*ufm,win Pf • Ted It Field. Pf • Kerv>eth P Anderson. PE • Mark P Rolfs Pf • David A- Bonestroo. MBA* S*dney P Wai- imson PE . I S • Acjnes M Pirsg. MBA* Allan Rick Schrrvdf PC • fnomas M' Peterson. PE * James P Mai.Kvj Pf • Miles B Jensen PC * I Phifiip GravH III Pf * D.*niel 1 Fdgerton Pf • iunael M«»rtineJ. P£ • Trsomas A Sytko, PE * Sheldon J Johnson * Dale A Grove Pf • Thomas A Roushar. Pf * PoDcft J Oevery. PE Off.cet: St Paul. St Cloud. Rochester and Wiflmar. MN • WilAjukee. Wi • Chicago. II Vi^btilc: WWW bonestroo com Mr. Mike Gaffron Planning Director City of Orono Post Office Box 66 Crystal Bay. MN 55323 Professional Properties of Orono File No. 139-02-000 Plat No. 02-2782 Dear Mike: We have reviewed the preliminary plan.s for the Professional Properties building. The site is located at 2765 Kelley Parkway in the northeast quadrant of the intersection of Old Cry .stal Bay Road and TH 12. The proposed use of the site is for a dental/medical complex. We have the following comments in regards to engineering matters. I. Sanitary Sewer: The proposed sanitary sewer service is shown connecting to an existing manhole located in Kelley Parkway. The sewer service crosses the adjoining property to the east. The proposed direction of discharge into the manhole is against the existing flows. The direction of discharge and the necessity of acquiring an easement from the adjoining property owner make the proposed connection undesirable. We recommend cutting a wye into the existing sanitary sewer so the service discharges perpendicularly to the existing sanitary sewer and the service doesn’t require an easement. The street should be repaired immediately after the connection is made w ith a street section equivalent to the existing section. 2. Water Main: The proposed water main .should be installed in accordance with City standards. 3. Storm Sewer/Grading: The draft version of the City ’s Surface Water Management Plan tSWMP) shows that this site lies within the Long Lake drainage di.strict. The proposed storm sewer design assumes there is or will be a storm water pond downstream to discharge into. Currently no such pond exists. The applicant should either provide additional detail as to where the storm water will discharge to and how that storm water will be conveyed off site or demonstrate how the storm water w ill be treated on site and where the discharge location is. The storm sewer design should include extending a pipe from CB #2 to the low point southwest of the site to pick up drainage from the ditch. The existing culvert under Old Crystal Bay Road should be bulkheaded and abandoned. The proposed grading plan shows grading within the MN/DOT right-of-way. Plans should be submitted to MN/DOT for their review and approval. Riprap should be provided at all inlets and outlets. Final plans should show plan and profile views of the proposed sewer and include storm sewer details, A drainage area map and storm sewer calculations should be submitted for our review. Silt fence and any other erosion control 233S West Highway 36 • St. Paul. MN 5S1I3 • 651-636-4600 • Fax: 651-636-1311