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Pi t • TPH-g, BTEX, and MTBE concentrations appear in Table 1, while historical oxygenates and alcohols results are presented in Table 2 Copies of laboratory reports and Chain-of-Custody documents are included in Appendix B The TPH-g, benzene, and MTBE isoconcentration maps are presented in Figures 2, 3, and 4. Laboratory results indicate TPH-g and benzene were below the laboratory detection limits in all samples The only detectable concentration of MTBE was found in well MW-11 (772 ug/L) Since the third quarter of 1997, Thrifty has analyzed for the requested oxygenates di-isopropyl ether (DIPE), ethyl-tert butyl ethyl (ETBE), tert-amyl methyl ether (TAME), and tert-butanol (TBA), and MTBE by method 8260 The following alcohols were also requested for analysis ethanol and methanol Due to the oxygenates analysis being inadvertently overlooked during the fourth quarter event, a fax was sent to the San Joaquin County Public Health Services (SJCPHS) requesting a waiver not to resample the site for oxygenates during the fourth quarter 2000 This requested was granted by Mr Mike Infurna, Jr and a copy of this fax and approval is included in Appendix C Analysis for oxygenates will resume during the first quarter 2001 Summary and Recommendations On December 7, 1999, the San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) approved The Corrective Action Plan (CAP), August 18, 1999 for this site • Thrifty has selected Advanced GeoEnvironmental, Inc (AGE) of Stockton, California(a contractor) to perform the remediation system installation The remedial installation activities include acquisition of all necessary permits, installation of gas and electrical service lines, delivery and hookup of the thermal oxidizer and groundwater treatment equipment, and start-up of the remedial system These activities were initiated dunng the Third Quarter 2000,with system start-up expected by the end of the Fourth Quarter 2000 The following activities which have been completed to date are as follows • Groundwater and vapor wells and the remediation piping are installed • Remediation compound is installed • Two 1000 pound carbon canisters are installed in the remediation compound • Vapor extraction unit is on site awaiting installation Electrical panel has been installed • Contracts and check for gas installation has been sent to PG&E, waiting to hear from them • Groundwater pumps have been purchased and awaiting installation • Thrifty has received the permit to discharge from the City of Stockton As soon as PG&E brings the medium pressure gas line to site and connects it to the gas meter, AGE will connect up the vapor and groundwater remediation system, conduct all necessary startup and permitting requirements, and bring the system on line From this point, Thrifty technicians will handle all operations and maintenance (O&M) of the remediation system Thrifty requests that the oxygenates sampling scheduled for this site be changed from a quarterly