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.�'I����`� `� �''�t,.i�e��„_.��;�����. � <br /> �Bonestroo <br /> Mem o Q Rosene <br /> �, Anderlik& <br /> �Assoclates <br /> Englnecrz 6 Archltccts <br /> Project Name: 3165 North Shore Drive Client: City of Orono <br /> (Plat 05-3135) <br /> File No: 139-05-000 <br /> To: Tom Kellogg <br /> Date: 2-3-06 <br /> From: Lance Hoff, Emily Resseger , <br /> Re: Drainage Review <br /> Owner: Allen Munson � <br /> Engineer: Schoell & Madson, Inc. <br /> Submittal: Drainage Calculations, Drainage Maps <br /> Date of Plans: 1-17-06 <br /> Date Received: 1-25-06 <br /> Comments <br /> Based on our review of the 3165 North Shore Drive residence, we offer the following comments. <br /> 1. No water quality treatment is provided onsite. Rainwater gardens or other biofiltration features are <br /> recommended to provide water quality treatment. <br /> 2. The proposed site raises rates slightly into Lake Minnetonka. Rates through the property to the <br /> north are reduced. The addition of water quality features would likely reduce total rates into Lake <br /> Minnetonka. The table below summarizes the 2-,10-, and 100-yr peak flow rates for�existing and <br /> proposed conditions. <br /> - Existin Conditions cfs Pro osed Conditions cfs <br /> Location 10-yr 100-yr 2-yr 10-yr 100-yr <br /> 2-yr(2.8") �4.2") (5.9") (2.8") (4.2") (5.9") � <br /> Throu h north ro ert 0.4 0.9 1.8 0.3 0.7 1.3 <br /> Throu h Munson site 0.2 0.7 1.3 0.4 1.0 1.8 <br /> Total flow to Lake 0.6 1.6 3.0 0.7 1.6 3.1 <br /> Minnetonka <br /> Bonesfroo,Rosene,Anderlik andAssociafes,Inc. www.bonesfroo.com <br /> 0 SL Paul OHlce: ❑Mlhvaukeo Ot�ca: ❑Rochestar Ofticc; ❑Wlllmar OHicn; O St Cbud ONfee: ❑Ll6ertyv111�Offlca: <br /> 2335 Wes!Mghway 36 12D75 N.Corporate Parkway,Sle 20D 112 7A SUeet NE 205 Sth SVeet SW 372123�"Street S 186D West Winchester Rd,Ste 106 <br /> Sf.PaW,MN 55113 Mequon,WI 53092 Rahaster,MN 55906 w8mar,MN 56201 Sl Cbud,MN 5fi301 Graystake,IL 60030 <br /> Phone:651•63E460U Phone:262•643�9032 Phona:507-282-2100 Phane;320�2149557 Phona:320•251-4553 Pirme:847•54&6774 <br /> Fax:651-636-1311 Fax:262•241•4901 Fa�c507-282-3100 Faz:320-214-9458 Faz:320-251•6252 Fax:847-54&6979 <br />