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S E CO R <br /> • Since May 31, 2007 the 750 scfm SVE and ASVE vapor abatement system has been operated <br /> under SJVAPCD ATC number N-4878-2-0. <br /> The ASVE system has removed approximately 1,691 pounds (277 gallons) of TPHg, 0.13 <br /> pounds (0.02 gallons) of benzene, and 0.00 pounds (0.00 gallons) of MtBE from soil vapor <br /> beneath the Delta View Apartments to date. For 1Q08, the ASVE system removed <br /> approximately 211 pounds (35 gallons) of TPHg, 0.00 pounds (0.00 gallons) of benzene, and <br /> 0.00 pounds (0.00 gallons) of MtBE. <br /> Historical ASVE system operations and analytical data are presented in Tables 19 through 21. <br /> 5.3 SVE System <br /> The SVE system has run near continuously since May 31, 2007 following retrofit construction <br /> that began on December 12, 2006. The SVE system is comprised of horizontal vapor wells: <br /> SVE-1 through SVE-11, a 100-gallon liquid/vapor separator, and a Solleco 500 cfm vapor <br /> extraction system with a Roots URAI 59 20-hp positive displacement blower. Vapor from both <br /> the ASVE and the SVE system is abated with a 750 scfm thermal oxidizer. <br /> Since May 31, 2007 the 750 scfm SVE and ASVE vapor abatement system has been operated <br /> under SJVAPCD ATC number N-4878-2-0. <br /> The SVE system has removed approximately 1,868 pounds (306 gallons)of TPHg, 0.14 pounds <br /> • (0.02 gallons) of benzene, and 0.00 pounds (0.00 gallons) of MtBE from soil vapor beneath the <br /> L&M OU to date. For 1Q08, the SVE system removed approximately 98.6 pounds (16.2 <br /> gallons) of TPHg, 0.02 pounds (0.00 gallons) of benzene, and 0.00 pounds (0.00 gallons) of <br /> MtBE. <br /> Historical SVE system operations and analytical data are presented in Tables 22 through 25. <br /> • <br /> 1 Q08QSSRQRSRQMR.Final.doc 28 April 30,2008 <br /> 77TW.26397.42.1307 <br />