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n rl < <br /> CAMBRIA , <br /> i `A= <br /> was detected in well MW-4 at a concentration of 51 6 ppb and was <1 00 ppb in we'll <br /> r <br /> MW-7 The EPA Method 8260A analyses were performed beyond the EPA5 <br /> recommended hold time <br /> Quarterly Sampling <br /> Groundwater samples were analyzed for total purgeable hydrocarbons as gasoline (TPHg) by <br /> EPA Method 8015 (Modified) and benzene, toluene, ethylbenzene, xylenes (BTEX), and <br /> methyl tertiary butyl ether (MTBE) by EPA Method 8020 Groundwater samples collected <br /> from wells MW-4 and MW-7 were also analyzed for MTBE by EPA Method 8260A <br /> Field monitoring data and chemical analytical data are presented in a summary table in <br /> Blaine's groundwater monitoring report (Appendix A) <br /> Conclusions <br /> Groundwater samples collected from the wells this quarter contained concentrations of <br /> • petroleum hydrocarbons and MTBE consistent with historical ranges for this site <br /> Closing <br /> Cambria submitted a work plan to SJCPHS on January 31, 1999 for further investigation at <br /> this site and received approval from SJCPHS The two proposed onsite soil borings were <br /> completed on May 23 and 24, 2000 In order to complete the proposed work and install <br /> three offsite wells, we have issued an access agreement to the property owner of the strip <br /> mall located at 6025-6045 Pacific Avenue, and we are in the process of obtaining a revocable <br /> permit and encroachment permit from the City of Stockton Once we receive a signed access <br /> agreement and the necessary City permits, we will schedule the work and notify the SJCPHS <br /> Quarterly monitoring and sampling will continue on the established schedule for this site <br /> 0854 2 <br />