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ATC Associates Inc <br /> 1117 Lone Palm Avenue, Suite B <br /> Modesto, California 95351 <br /> 209-579-2221 <br /> AS s o c k are s INC Fax 209-579-2225 <br /> ATC subrmtted the Remediation System installation Report on September 21, 2005 documenting <br /> g <br /> the installation of the vapor extraction system On November 1, 2005, ATC submitted the Vapor <br /> Extraction System Startup report for the site <br /> Remediation system startup was performed on September 6, 2005 At the time of startup, vapor <br /> ' samples were taken under supervision of a SJVACD regulator <br /> Request to establish a secondary power source for the remediation system was submitted to Pacific <br /> ' Gas & Electric (PG&E) Company on July 13, 2005 On August 18, 2005, an engineer from PG&E <br /> visited the site to describe the most feasible and cost effective manner to establish a separate power <br /> source to the remediation compound PG&E installed a new transformer on a near-by existing electric <br /> pole located on Stei negul Road and ran an over-head power to a customer built pole on the property <br /> The generator was taken off-lune on February 20, 2006 when the direct feed electrical service was <br /> completed <br /> ' GROUNDWATER SAMPLING ACTIVITIES <br /> On August 18, 2006, ATC personnel collected groundwater samples from MW 1 through MW6, <br /> MW8, MW9, and the on-site domestic well The well locations are shown on Figure 2 Prior to <br /> ' collecting groundwater samples, depth-to-water (DTW) was measured Approximately three well <br /> casing volumes were purged from each well prior to sampling The pH, electrical conductivity, <br /> and temperature were recorded Turbidity was visually observed in groundwater purged from the <br /> ' monitoring wells and recorded The wells were allowed to recover and samples were collected <br /> from each well using dedicated disposable bailers After groundwater samples were collected, <br /> dissolved oxygen was measured in groundwater purged from each well <br /> ' The groundwater samples collected from each well were submitted to Argon Laboratories Inc, a <br /> state-certified analytical laboratory (Environmental Laboratory Accreditation Program <br /> ' Certification No 2359), for chemical analyses Each sample was analyzed for TPHg utilizing <br /> EPA Method 8015M, BTEX utilizing EPA Method 8021B, and MTBE, tertiary butyl alcohol <br /> (TBA), tertiary amyl ether(TAME), di-isopropyl ether(DIPE), ethyl tertiary butyl ether(ETBE), <br />' 1,2-dichloroethane (1,2-DCA), and 1,2-dibromoethane (EDB) utilizing EPA Method 8260B <br /> Groundwater well purge and sample logs are contained in Attachment 1 <br /> S 154 2951 0001\0&M11st-qtr-2006 dm 3 <br />