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,� ,. i t Second Quarter 2005 Groundwater Monitoring and Remediation Status Report Moore Petroleum Balk Plant,5491 F Street,Banta,California Page 6 REMEDIATION SYSTEM SUMMARY Soil Vapor Extraction System System description: j Petroleum vapors are extracted from the subsurface through three monitoring/vapor wells (VEW- 3/1\4W-8, MW-1, and VEW-4/MW-7) and two vapor extraction wells (VEW-1 and VEW-2). The wells are manifolded together with PVC piping in the remediation compound before connecting to the extraction system. The vapor extraction system is a 5-horsepower regenerative blower manufactured by Rotron-Ameteko Model number EN6F72L. Activated carbon adsorption abates the volatile organic compounds extracted by the SVE system. The system is operating under the authority of the SJVAPCD, Authority to Construct#N 560-8-2. System startup date: June 17, 2002 Current system mode: Carbon abatement (September 29, 2004) Active extraction wells: VEW-2, VEW-3, VEW-4 Inactive extraction wells/reason: MW-1, VEW-1 system optimization, zero concentrations Status of system operation during reporting period/ reasons for downtime: The SVE system operated continuously during this reporting period, with the exception of the June 23, 2005, site visit in which the high temperature sensor for the SVE system shut the system down..The SVE system restarted normally and field data was recorded. According to hour meter i readings recorded in the field the SVE system operated for a total of 100 days between March 2, 2005 and June 9, 2005. Vapor Analysis Performed: I Analysis Abbreviation Designation LISEPA Method No. 1 Total Petroleum Hydrocarbons TPH Gas-Range as Gasoline g Hydrocarbons I Benzene Aromatic Toluene BTEX Volatile 82608 Eth !benzene Organics i i Xylenes (Total) Methyl Tertiary Butyl Ether MTBE Fuel Oxygenate � All effluent samples collected during this reporting period were reported as containing no concentrations above laboratory detection limits.