Project Packet - Laserfiche WebLink

Home Browse Search

•/i , '.D -'c ( 8 r .�'s ', i TA Bonestroo Memo Rosene Anderlik& VI Associates Engineers 6 Architects Project Name: 3165 North Shore Drive Client: City of Orono (Plat 05-3135) File No: 139-05-000 To: Tom Kellogg Date: 2-3-06 From: Lance Hoff, Emily Resseger Re: Drainage Review Owner: Allen Munson Engineer: Schoell & Madson, Inc. Submittal: Drainage Calculations, Drainage Maps Date of Plans: 1-17-06 Date Received: 1-25-06 Comments Based on our review of the 3165 North Shore Drive residence, we offer the following comments. 1. No water quality treatment is provided onsite. Rainwater gardens or other biofiltration features are recommended to provide water quality treatment. 2. The proposed site raises rates slightly into Lake Minnetonka. Rates through the property to the north are reduced. The addition of water quality features would likely reduce total rates into Lake Minnetonka. The table below summarizes the 2-,10-, and 100-yr peak flow rates for existing and proposed conditions. Existing Conditions (cfs) Proposed Conditions (cfs) Location 10-yr 100-yr 2-yr 10-yr 100-yr 2-yr (2.8") (4.2") (5.9") (2.8") (4.2") (5.9") Through north property 0.4 0.9 1.8 0.3 0.7 1.3 Through Munson site 0.2 0.7 1.3 0.4 1.0 1.8 Total flow to Lake 0.6 1.6 3.0 0.7 1.6 3.1 Minnetonka Bonestroo, Rosene,Anderlik and Associates, Inc. www.bonestroo.com ❑St.Paul Office: O Milwaukee Office: ❑Rochester Office: ❑Willmar Office: ❑St.Cloud Office: 0 Libertyville Office: 2335 West Highway 36 12075 N.Corporate Parkway,Ste 200 112 7',Street NE 205 5th Street SW 3721 23'r Street S 1860 West Winchester Rd,Ste 106 St.Paul,MN 55113 Mequon,WI 53092 Rochester,MN 55906 Willmar,MN 56201 St Cloud,MN 56301 Grayslake,IL 60030 Phone:651-636-4600 Phone:262-643-9032 Phone:507-282-2100 Phone:320-214-9557 Phone:320-251-4553 Phone:847-548-6774 Fax:651-636-1311 Fax:262-241-4901 Fax:507-282-3100 Fax:320-214-9458 Fax:320-251-6252 Fax:847-548-6979