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a <br /> • page 5 <br /> -------_r-------------------------------------------- <br /> Method <br /> Detection 1 1 5 .0 5 .0 5 .0 5 . 0 <br /> Limit <br /> ----------------------------------------------------------- <br /> An oil , not identified by the laboratory, was observed <br /> while advancing EP-1 <br /> TPH-D. . .Total Petroleum Hydrocarbons as Diesel <br /> TPH-G. . .Total Petroleum Hydrocarbons as Gasoline <br /> BTEX . .Benzene , toluene, ethylbenzene , total xylenes <br /> ppm. . . Parts per million <br /> ppb. . . Parts per billion (1 ppm = 1 , 000 ppb) <br /> N.D. . . .Not detected above method detection limit <br /> Table 2 <br /> Analytical Results of Grab Water Samples Acquired <br /> at 2360 East Street , Tracy, CA <br /> March, 1994 <br /> TPH-D TPH-G B T E X <br /> Sample No. (ppb) (ppb) (ppb) <br /> 0 --EP-1---------N . D. -- 320 ,000- - 460----680 --900---1400 <br /> EP-2 81 84,000 360 170 480 1100 <br /> EP-3 N.D. 1500 3 . 1 4. 4 9. 1 9 . 9 <br /> EP-4 N.D 710 ,000 1500 1200 1000 3600 <br /> ----------------------------------------------------------- <br /> Method <br /> Detection 50 100 0 . 5 0 . 5 0 . 5 0 . 5 <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 /> ppb. . .Parts per billion <br /> N.D. . . .Not detected above method detection limit <br /> Further Definition of the Eastern Plume Boundary <br /> On July 22 , 1994 , Dr. Ozdemir Beyce of EPM oversaw the <br /> auguering of three (3) additional sail borings (designated <br /> EP-5 , EP-6, and EP-7) advanced by Del Tech Geotechnical <br /> Support Services beyond the eastern property boundary of <br /> the subject site in response to the request for additional <br /> investigation in this area made by Mr . Michael Infurna. <br />