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C A M B R I A <br />SAMPLING ACTIVITIES AND SAMPLE ANALYSES <br />Four product dispensers and associated piping were removed (Figure 2). Sampling was <br />performed as directed by a (SJCPHS/EHD) representative. The sampling activities are <br />summarized below. <br />Dispenser and Piping Sampling: Soil sampling beneath the former product dispensers and <br />associated piping was conducted on November 2, 1999. A total of ten soil samples (D-1 <br />through D-10) were collected from beneath the former dispensers and product lines (Figure <br />© 2). The soil samples were analyzed for total petroleum hydrocarbons as gasoline (TPHg) by <br />EPA Method 8015 (modified), benzene, toluene, ethylbenzene, xylenes (BTEX) and methyl <br />tertiary butyl ether (MTBE) by EPA Method 8020, and fuel oxygenates and lead scavengers <br />(MTBE, TAME, DIPE, ETBE, TBA, EDB, and 1,2 -DCA) by EPA Method 8260B. <br />Stockpile Sampling: During construction activities soil was placed into two separate <br />temporary stockpiles on-site. Samples of this soil were collected and analyzed for TPHg, <br />total lead by EPA method 6010B, organic lead, and benzene, toluene, ethylbenzene, xylenes <br />(BTEX) and fuel oxygenates and lead scavengers (MTBE, TAME, DIPE, ETBE, TBA, EDB, <br />and 1,2 -DCA) by EPA Method 8260B. The soil stockpiles were transported to Forward <br />Landfill in Manteca, California on November 18, 1999. Laboratory results are presented in <br />Appendix A. <br />ANALYTICAL RESULTS <br />Soil sample results are presented on Table 1 and Figure 2. The certified analytical reports are <br />included in Appendix A. A summary of the data is presented below. <br />Dispenser and Piping Sampling Results: Samples D-1 through D-10 did not contain <br />detectable levels of TPHg, BTEX, fuel oxygenates, and lead scavengers. The only exception <br />was 0.0404 parts per million of MTBE detected in sample D-4 which was collected at 3.0 <br />feet below grade. <br />CLOSING <br />Based upon visual observations and the analytical results of soil samples during removal <br />activities, it appears that petroleum hydrocarbons and fuel oxygenates have not impacted the <br />soils beneath the area of the former dispensers and piping at the site. Based on these data, <br />Cambria does not recommend additional investigation in this area. <br />201-1015 2 <br />