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Updated Site Conceptual Model and First Quarter 2002 Monitoring and Remediation Report <br /> Cleanup and Abatement Order No 5-00-707 EAT Project No 1232 <br /> 1 1 4 Cleanup and Abatement Order <br /> On September 8, 2000, the RWQCB issued CAO No 5-00-707 The GAO requested the <br /> responsible parties investigate and clean up petroleum hydrocarbons from the former UST <br />' systems located on the Wards and Unocal sites, and stated that discharges from these two <br /> properties have impacted ground water extracted and used by San Joaquin Delta College to <br /> irrigate its campus This report has been prepared in accordance with the quarterly reporting <br />' requirements outlined in the CAO As required by the GAO, each quarterly report shall <br /> include <br /> 0 Ground water analysis results for total petroleum hydrocarbons as gasoline (TPH-G) by <br /> modified EPA Method 8015, and volatile organic compounds (VOCs), including fuel <br /> oxygenates, e g , MTBE, TBA, DIPS, ETBE, TAME, and EDB by EPA Method 8260B <br /> • Ground water elevation contour maps <br /> Ground water flow diagram to document historic flow directions and magnitude <br /> • Hydrographs for representative monitoring wells <br /> • Pollutant concentration contour maps for TPH-G and benzene <br /> • Tabular listing of all monitoring well details <br />' • Tabular results of current sampling data completed during the previous quarter <br /> • Tabular results of all previous data collected including current sampling data <br /> • Ground water purge data sheets <br /> M 0 Narrative describing the work presented in the report, including methodology, <br /> conclusions, and recommendations <br /> m Schedule outlining future activities <br />' • Data documenting disposal of investigation derived wastes <br /> 1 <br /> BHM 1232RO231 -3- <br />' ENVIRONMENTAL AUDIT, INC <br />