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• • <br /> Blo A wClean <br /> A Forterra Company <br /> Date: 07/17/18 <br /> Subject: 7154—Millwright Loop South,Everett,Wa <br /> To Whom It May Concern, <br /> The MWS Linear will be sized in accordance with the TAPE GULD approval for the Modular <br /> Wetland System.The system is sized at a loading rate of(less than or equal to) 1.o gpm/sq ft, <br /> where the pre-filter cartridges are sized at a loading rate of less than 2.1 gpm/sq ft. Design, <br /> sizing,and loading have been reviewed and approved by a Modular Wetland Representative and <br /> is ready for final approval. Shown below are the calculations for this Project: <br /> MWS-L-8-20-V-UG <br /> • Required Treatment Flow Rate = 0.576 cfs <br /> • MWS-Linear-8-2o Treatment Capacity Provided= 0.718 cfs or 322.23 gpm at 4.4'HGL <br /> • Pre-filter Cartridge= 6 full size cartridges <br /> • Surface Area per Cartridge= 25.6 sq ft <br /> • Loading rate(Pre-Filter Cartridge) = 2.1 gpm/sq ft <br /> • MWS Wetland Surface Area= 325.6o sf <br /> • Loading Rate(Wetland Media) = 1.o gpm/sf <br /> If you have any questions please feel free to contact us at your convenience. <br /> Sincerely, <br /> 04117 I 470,---- <br /> Anthony J. Spolar, E.I.T. <br /> Stormwater Engineer <br /> Modular Wetland System,Inc. <br /> 398 Via El Centro,Oceanside,CA 92058 <br /> (469)458-7973•Fax(760)433-3176 <br /> www.biocleanen ironmental.com <br /> 12 <br />