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SOUNDVIEW TECHNOLOGY CENTER <br />EVERETT, WA <br />Name Vault 3 <br />Width 22 ft. <br />Length 376 ft. <br />Depth: 16 ft. <br />Discharge Structure <br />Riser Height: 15 ft. <br />Riser Diameter: 12 in. <br />Orifice 1 Diameter: 1.07 in. Elevation: 0 ft. <br />Orifice 2 Diameter: 1.72 in. Elevation: 10 ft. <br />Orifice 3 Diameter: 1.05 in. Elevation: 11.25 ft. <br />Stream Protection Duration <br />POC #1 <br />The Facility PASSED <br />The Facility PASSED. <br />Vault #5 <br />Name : Bldg C <br />Bypass: No <br />GroundWater: No <br />Pervious Land Use <br />acre <br />C, Forest, Steep <br />2.43 <br />Pervious Total <br />2.43 <br />Impervious Land Use <br />acre <br />Impervious Total <br />0 <br />Basin Total <br />2.43 <br />Name Vault 5 <br />Width 22 ft. <br />Length 136 ft. <br />Depth: 16 ft. <br />Discharge Structure <br />Riser Height: 15 ft. <br />Riser Diameter: 12 in. <br />Orifice 1 Diameter: 0.53 in. <br />Elevation: 0 ft. <br />Orifice 2 Diameter: 0.87 in. <br />Elevation: 10.9 ft. <br />Orifice 3 Diameter: 0.53 in. <br />Elevation: 12.15 ft. <br />Stream Protection Duration <br />POC #2 <br />The Facility PASSED <br />The Facility PASSED. <br />As can be seen in the WWHM output, modeled vaults with dimensions of 22'x376'x15.0' (vault #3) plus <br />22'x136'x15.0' (vault #5) meets and exceeds the detention requirements for basin B. <br />MAY 23, 2017 STORMWATER DRAINAGE REPORT PAGE 22 <br />