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Table 2 , continued <br /> TPH-D TPH-G B T E X TOG <br /> Sample No. (ppb) (ppb) (ppb) (ppm) <br /> ----------------------------------------------------------- <br /> SBR-3 400 11000 N.D. N D. 5 . 7 3 . 4 N.D. <br /> SBR-4 300 500 N . D. N. D. N.D N.D N.D <br /> SBR-5 300 1,000 N.D. N .D. 13 11 N.D. <br /> SBR-6 600 2, 000 N.D. N.D. N.D. N.D. N.D. <br /> SBR-7 ////////////// No Samples Acquired <br /> SBR-8 200 600 N.D. N. D. N. D. N.D. N .D. <br /> SBR-9 87 ,000 1 , 100 , 000 690 460 5500 13000 N. D. <br /> SBR-10 800 5,000 N.D. N.D. 290 42 N.D. <br /> ----------------------_------------------------------------ <br /> Method <br /> Detection 50 50 0 . 2 0 . 2 0 2 0. 6 4 <br /> Limit <br /> -------------------------------------------------------_---- <br /> TPH-D. . .Total Petroleum Hydrocarbons as Diesel <br /> TPH-G. . .Total Petroleum Hydrocarbons as Gasoline <br /> BTEX. . .Benzene, toluene, ethylbenzene, total xylenes <br /> TOG. . .Total oil and Grease (non-polar) <br /> ppb . Parts per billion <br /> N. D. —Not detected above indicated method detection limit <br /> COMPLIANCE MONITORING OF THE ON-SITE GROUNDWATER MONITORING <br /> WELLS <br /> Sampling of the three on-site, 2-inch inside-diameter <br /> groundwater monitoring wells (MW-1 , MW-2 , and MW-3) was <br /> performed on February 14, 1994 with the approval of Ms . <br /> Mary Meays of San Joaquin County Public Health Services , <br /> Environmental Health Division (PHS/EHD) . <br /> Depth to water and total well depth in each of the wells <br /> were measured using an electric tape and the volume of <br /> water within each well casing was computed Each well was <br /> then purged using a clean, disposable, polyethylene bailer <br /> until the groundwater was free of significant sand, silt , <br /> and/or other grit , and temperature, pH, and electrical <br /> conductivity readings stabilized. In this case, over three <br /> well volumes of water were removed from each well . <br /> Page 6 <br />