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.a tr TABLE 1 - SOIL CHEMICAL ANALYTICAL DATA Chevron Station #9-3232 8660 Lower Sacramento Road Stockton, California Sample Ethyl- Total Sample Date Depth TPHg Benzene Toluene benzene Xylenes MTBE ID Collected (feet) ( m) (ppm) (ppm) ( m) (ppm) ( m) Boring MW-1 MW-1-10 5 10/29/98 10 5 <1 00 <0 00500 <0 00500 <0 00500 <0 00500 <0 0500 MW-1-20 5 10/29/98 20 5 <1 00 <0 00500 <0 00500 <0 00500 <0 00500 <0 0500 MW-1-30 5 10/29/98 30 5 <1 00 <0 00500 <0 00500 <0 00500 <0 00500 <0 0500 MW-1-40 5 10/29/98 40 5 <1 00 <0 00500 <0 00500 <0 00500 <0 00500 <0 0500 MW-1-54 5 10/29/98 54 5 Boring MW-2 MW-2-10 0 10/29/98 10 0 <1 00 <0 00500 <0 00500 <0 00500 <0 00500 <0 0500 MW-2-20 5 10/29/98 20 5 <100 <0 00500 <0 00500 <0 00500 <0 00500 <0 0500 MW-2-30 5 10/29/98 305 2 941 0 184 <0 00500 0 187 0 579 <0 0500 MW-2-40 5 10/29/98 40 5 14 81 0 742 0 0338 0 338 1 45 <0 100 MW-2-50 5 10/29/98 50 5 593 6 44 20 3 13 9 57 2 Boring XJW-3 MW-3-10 5 10/30/98 10 5 <100 <0 00500 <000500 <000500 <000500 <0 0500 MW-3-20 5 10/30/98 20 5 <100 <0 00500 <0 00500 <0 00500 <0 00500 <0 0500 MW-3-30 5 10/30/98 30 5 <100 <0 00500 <0 00500 <0 00500 <0 00500 <0 0500 MW-3-40 5 10/30/98 40 5 <100 <0 00500 <0 00500 <0 00500 <0 00500 <0 0500 MW-3-49 5 10/30/98 495 52 61 0 901 0 030 0 580 0 160 <0 250 Storltnele Results SSI A-D 10/30/98 ---- < 1 00 <0 00500 <0 00500 <0 00500 <0 00500 ---- Explanation_ Analytical Laboratory TPHg = Total Petroleum Hydrocarbons as gasoline Sequoia Analytical (ELAP#1624) BTEX = benzene, toluene, elhylbenzene, total xylenes MTBE = methyl tert-butyl ether Analytical Methods TPHg/BTEX/MTBE = DHS LUFT ---- = analysis not requested/not applicable ppm = party per million 1 Chromatogram pattern indicated weathered gasoline C6-C12 346463 01