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Al%►ITI AIv') <br /> Size and Cost Estimate <br /> STORMVUATER .,,� <br /> ----------"SOLUTIONS INC. <br /> Prepared by Kathryn Thomason on June 8,2007 <br /> NCity Lights — Stormwater Treatment System <br /> Everett, WA <br /> IInformation provided: <br /> Structure ID -_ Vault Vault Vault <br /> • 1 2#1 2#2 <br /> • Total Area (acre) = 0.79 0.725 0.725 <br /> • Percent Impervious = 62 61 61 <br /> • Water Quality Flow, WQF (cfs) = 0.1318 0.1149 0.1149 <br /> A • Peak Flow, Q100 (cfs) = <1 <1 <1 <br /> Assumptions: <br /> • Media = ZPG cartridges <br /> • Per Cartridge flow rate = 15 gpm <br /> • Drop required from inlet to outlet= 2.3' minimum <br /> • Presiding agency= City of Everett <br /> Size and cost estimates: <br /> The StormFilter is a flow-based system, and therefore, is sized by calculating the water quality flow rate associated <br /> with the design storm. The water quality flow rate was calculated by the design engineer using the SBUH method <br /> and provided to CONTECH Stormwater Solutions. <br /> Water <br /> Structure Quality Approximate Depth ate Cartridges System Size Estimated <br /> 1 Flow <br /> Vault 1 0.1318 3.3' 4 Catchbasin $17,100 <br /> Vault 2 0.1149 3.3' 4 Catchbasin $17,100 <br /> #1 <br /> Vault 2 <br /> 1 #2 0.1149 3.3' 4 Catchbasin $17,100 <br /> The estimated costs are for complete systems delivered to the job site. The final system cost will depend on the <br /> actual depth of the units and whether extras are specified. The contractor is responsible for setting the StormFilter <br /> systems and all external plumbing. <br /> 1 <br /> 1 ©2006 CONTECH Stormwater Solutions 12021-B 1 B NE Airport Way,Portland OR 97220 Page 1 of 1 <br /> contechstormwater.com Toll-free:800.548.4667 Fax:800.561.1271 TS-P027 <br />