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Third Quarter 2004 Groundwater Monitoring/Remediation Status Report <br /> \.. Moore Petroleum Bulk Plant,5491 F Street,Banta,California <br /> Page 7 <br /> System performance totals: <br /> This Quarter Cumulative <br /> Pounds of TPH removed: 11 pounds (2 gallons) 5,239 pounds (832 gallons) <br /> Pounds of benzene removed: 0.00 pounds 1.84 pounds <br /> CONCLUSIONS <br /> Based on groundwater analytical results, concentrations remained consistent this quarter' <br /> compared.with last quarter, Hydrocarbon concentrations classified as TPHd and TPHmo <br /> continue to vacillate between each other due to laboratory interpretation of the results. The <br /> domestic well sampling results for the two sampling events during the quarter were below <br /> detection limits. The proposed ozone system will attenuate these heavy range hydrocarbons. <br /> Groundwater elevations decreased an average 0.82 feet this quarter compared with last quarter. <br /> Groundwater isoconcentration maps for TPHg, TPH kerosene and MTBE show the petroleum <br /> hydrocarbon plume centered by the dispenser island and are defined, while the isoconcentration <br /> map for MTBE is not defined to the northeast. Apex is currently preparing a workplan for the <br /> installation of additional wells to define the plume. <br /> RECOMMENDATIONS <br /> Apex recommends continued remediation and groundwater monitoring to confirm laboratory <br /> data and monthly groundwater sampling of the domestic well. The next monitoring event is <br /> scheduled for December 2004. <br /> ADDITIONAL ACTIVITES PERFORMED AT SITE <br /> None <br />