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Page 5 ' Table 2 , continued TPH-D TPH-G B T E X TOG Sample No. (ppb) (ppb) (ppb) (ppm) ----------------------------------------------------------- SBR-5 300 1 ,000 N.D. N.D 13 11 N.D. SBR-6 600 2 ,000 N. D. N.D. N . D N. D N.D SBR-7 ////////////// No Samples Acquired SBR--8 200 600 N.D. N.D. N .D. N .D. N. D. SBR-9 87 ,000 1 , 100 ,000 690 460 5500 13000 N D. SBR-10 800 5 ,000 N D. N.D. 290 42 N D. ----------------------------------------------------------- Method Detection 50 50 0 . 2 0 . 2 0 . 2 0 . 6 200 Limit • -----------------------------------------------------------_____________ TPH-D. . .Total Petroleum Hydrocarbons as Diesel TPH-G. . .Total Petroleum Hydrocarbons as Gasoline BTEX. . .Benzene , toluene, ethylbenzene, total xylenes TOG. . .Total Oil and Grease (non-polar) ppb. . Parts per billion N D. . .Not detected above indicated method detection limit On February 22 , 1994, EPM professional staff an an employee of Lodi Backhoe Service of Lodi excavated two exploratory trenches at 275 Grant Line Road at those locations indicated in reports previously submitted. The trench near the northwest corner of the on-site building was excavated in an effort to locate a possible source of hydrocarbon contamination detected during the preparation of contaminant contours developed as a result of the placement of soil borings during October of 1993 . A second trench was excavated along the western boundary of the site in an effort to ascertain whether contaminants had migrated onto contiguous property. Discrete soil samples were acquired from the boundaries of both trenches following the removal of a total of approxi- mately 40 cubic yards . Much of the soil excavated from the • trench near the on-site building was discolored and malodorous- apparently as a result of fuel hydrocarbon