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TKDA <br />ENGINEERS • ARCHITECTS • PLANNERS <br />MEMORANDUM <br />To: Thomas D. Prew, P.E. Reference: Cox Estates <br />444 Cedar Street, Suite 1500 <br />Saint Paul, MN 55101 -2140 <br />(651) 292-4400 <br />(651) 292-0083 Fax <br />www.tkda.com <br />Copies To: James E. Studenski, P.E. Drainage Review <br />City of Lino Lakes, Minnesota <br />From: Connie J. Taillon, P.E. (..ST Proj. No.: 13810.005 <br />Date: March 6, 2007 Routing: <br />The following review is based on this submittal: <br />1. Stormwater Report for Cox Estates, submitted by Metro Land Surveying & Engineering, dated <br />February 26, 2007. <br />Drainage Review Comments: <br />1. Submit a revised existing drainage map that shows the watershed boundary between subcatchments <br />• X1 and X2. <br />2. The proposed 10 -year and 100 -year rates to Lois Lane do not exceed predevelopment rates. The <br />2 -year rate is exceeded by 0.05 cfs. This increase in rate for the 2 -year storm event is not significant, <br />and is therefore acceptable. <br />The proposed 2 -, 10 -, and 100 -year rates to the wetland located south of the site exceed <br />predevelopment rates by 0.05 cfs, 0.13 cfs, and 0.27 cfs, respectively. This increase in rate is not <br />significant and does not affect the high water elevation of the wetland, and is therefore acceptable. <br />An Employee Owned Company Promoting Affirmative Action and Equal Opportunity <br />