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{ J Fourth Quarter 2005 Groundwater Monitoring and Remediation Status Report Moore Petroleum Bulk Plant,5491 F Street,Banta,California Page 7 { System startup date: June 17, 2002 Current system mode: Carbon abatement (September 29, 2004) Active extraction wells: VEW-1, VEW-2, VEW-3, VEW-4 Inactive extraction wells/reason: MW-1, system optimization, zero concentrations Status of system operation during reporting period/ reasons for downtime: The SVE system did not operate continuously during-this reporting period. Apex personnel shut the system off after the sampling event performed on September 22, 2005, due to no hydrocarbon concentrations. In November, Apex personnel attempted to re-start the system for data recording, however the blower had developed a calcium build up within the rotary veins however and prevented operation of the unit. Apex removed the blower from site, the blower was returned to the site and re-installed on December 1, 2005. Rebound of volatile organic vapors did occur between the two sampling events previously mentioned. The analytical report for the December 1 sampling event indicated TPHg concentrations of 34 ppmv. According to hour meter readings recorded in the field the SVE system operated for a-total of 38 days between . August 15, and December 1, 2005. Due to the concentrations reported from December 1,Apex has been operating the SVE system on a full time basis. -- Vapor Analysis Performed: Analysis Abbreviation Designation USEPA Method No. Total Petroleum Hydrocarbons TPH Gas-Range as Gasoline g Hydrocarbons Benzene Toluene Aromatic Eth (benzene BTEX Volatile 8260E Xylene (Total Organics Methyl Tertiary Butyl Ether MTBE Fuel OxIgenate All effluent samples collected during this reporting period were reported as containing no concentrations above laboratory detection limits.