02-13-2006 Council Packet - Laserfiche WebLink

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�,�.�.� �Bonestroo Me m o ��Rosene Anderlik& �Associates Englncers 6 Archi[Ccts Project Name: 3500 Watertown Road Client: City of Orono To: Tom Kellogg File No: 139-05-000 From: Lance Hoff Dafe: 1-25-06 Re: Drainage Review Developer: Bohland Development, Inc. and James MacKinnon Engineer: Gronberg & Associates, Inc., Long Lake Submittal: Drainage Calculations, Pians Plan Sheets: Grading and Drainage Date of Plans: 1-20-06 Date Received: 1-23-06 Comments Based on our review of the 3500 Watertown Road development, we offer the following comments. 1. Rationa! method storm sewer calculations should be submitted for review and approval. 2. A pond outlet detail should be included on the plans and submitted for review and approval. The submitted model inciudes an outlet, though the design is unclear. An outlet should be properly designed and clearly shown on the pians. 3. The City's standard skimming pond outlet should be used (detail attached). 4. Drainage from the pond outiet structure should be routed to the northwest via a swale to prevent pond discharge from entering the adjacent property. 5. The pond emergency overflow (EOF) elevation should be labeled on the plans. The EOF elevation shouid be located at or above the 100-yr HWL. The EOF should direct flood discharge away from the adjacent property. Bonesfroo, Rosene, Anderlik andAssociates, Inc. www.bonest�oo.com 51.Paul Oftice: Milwaukee Oltice: Rochester Office: Willmar Oltice: St.Cloud Otlice: Lihertyville Oflice: 2935'Nesl Highway 36 12075 N.Corporate Parkway,Sle 260 112 T^Slreet NE 205 Slh Slreet SW 3721 23b61reel S 1860 Wesl Winchesler Rd,Ste 106 St.Paul,MN 55113 Mequon,WI 53092 Rochester,MN 55906 Wiqmar,MN 56201 51.Cloud,MN 56301 Grayslake,IL 60030 Phane:65i-636�4600 Phonc:2fi2�6439032 phane:507-282-2100 Phanc:320-214-9557 Phone:320-251-0553 Phane:847•548-fi774 Fax:651-636-1311 Fax;262-241-4901 Fax:507-282-310a Fax:320-214-9458 Faz:320-251-6252 Fax:847-54B-G979