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i Condor Earth Technologies, Inco <br /> 21663 Brian Lane Sonora CA 95370(209)532-0361 <br /> 188 Frank West Circle Suite 1 Stockton CA 95206(209)234-0518 <br /> 1739 Ashby Road Suite B Merced CA 95348(209)388-9601 <br /> August 7, 2006 Condor Project No.3761D <br /> SECOND QUARTER 2006 GROUNDWATER MONITORING REPORT <br /> Site Address: Boyett Petroleum <br /> 419 S. Main Street <br /> Manteca, California AUG 0 9 2006 <br /> Client: Dale Boyett ENVIRONMENT HEALTH <br /> Boyett Petroleum PERMIT/SERVICES <br /> P.O. Box 576277 <br /> Modesto, CA 95357 <br /> Primary Agency: Jeffrey Wong, San Joaquin County Environmental Health Department(SJCEHD) <br /> This second quarter 2006 groundwater monitoring report includes a description of groundwater <br /> monitoring conducted by Condor Earth Technologies, Inc. (Condor) at the above referenced site (Figure <br /> . 1, attached)on June 27, 2006. This report has been submitted to the SJCEHD and the California Regional <br /> Water Quality Control Board (CRWQCB). The following are shown in Figures 1 through 5, which are <br /> attached to this report: <br /> o site location <br /> o site map <br /> e groundwater elevation contours <br /> • monitoring well methyl tertiary-butyl ether(MTBE)concentrations <br /> • a graph of MTBE concentrations in selected monitoring wells over time <br /> Also attached are the following: <br /> • site background information <br /> • historical groundwater monitoring data <br /> • groundwater monitoring field forms <br /> • laboratory analytical results <br /> FIELD OBSERVATIONS <br /> On June 27, 2006, a Condor representative was on site to measure water levels and collect groundwater <br /> samples from monitoring wells MW-2, MW-3, MW-4R, MW-6 through MW-11, and EW-1. The <br /> locations of the monitoring wells are shown in Figure 2, attached. Field observations included water level <br /> measurement, appearance of samples (color, clarity, and presence of petroleum product sheen or phase in <br /> samples), and collection of water quality field parameters. No floating product, sheen, or petroleum odor <br /> . was observed in the groundwater inspection samples from the monitoring wells. Field observations are <br /> �a CONDOR <br />