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elf, <br /> Commingled Plume#35 <br /> Chevron 9-4275/ARCO#2133 <br /> E c 0 R --- --- ----- <br /> Site Conceptual Model <br /> September 1,2006 <br /> Page 5 <br /> air into nine wells (GM-1 through GM-9). The SVE system was comprised of ten SVE wells <br /> (VW-1 and GM-1 through GM-9), a 5-hp positive-displacement blower, and 100-cubic feet per <br /> minute (cfm) catalytic oxidizer. The SVE system was deactivated due to high groundwater <br /> levels. Prior to shutdown, the SVE system extracted approximately 70 pounds of TPHg from <br /> the soil and groundwater beneath the site. The. SVE and AS wells were destroyed and the <br /> remediation equipment was removed from the site in May 2005. <br /> 2.4.2 ARCO 2133 Facility <br /> i <br /> A groundwater extraction (GWE) system was in operation onsite between 1984 and 1996. SVE <br /> and AS systems were initiated on January 1, 1995, and May 5, 1995, respectively. The SVE <br /> system is comprised of 14 SVE wells (V-1 through V-13, and E-6) and an Airex Katox 100 <br /> catalytic oxidizer. The SVE system was shutoff on March 1 2001, due to low influent <br /> concentrations. Prior to shutdown, the SVE system removed approximately 4,892 pounds of <br /> TPHg and 61.3 pounds of benzene. The AS system is comprised of nine AS wells (S-1 through <br /> S-9) and a MD Pneumatics Model 3202 7.5-hp blower. <br /> j <br /> 'I <br /> III <br /> 94275-ARCO 2133 SCM 9-2006 5 <br />