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TAPS <br /> HISTORICAL GROUNDWATER ANALYTICAL DATA <br /> Cohn Property <br /> Stockton,California <br /> Sample Date of TPH as Aromatic Volatile Orpanics Seven Fuel O genates <br /> ID Sampling Gasoline Benzene Toluene Ethyi- Total DIPE ETBE MTBE TAME TBA Ethanol Methanol <br /> Benzene Xylenes <br /> (jig/L) 1L 1L 1LI firni- IL lL 1L (pg/L1L !L <br /> MW-8 12/14/00 30 000 480 810 850 2,600 <40 <40 <40 <40 <400 <br /> 6119101 11000 110 60 410 610 <20 <20 <20 <20 <200 <br /> 9125101 5,600 69 58 320 77 <10 <10 <10 <10 <100 <br /> 12/17/01 3 500 65 62 390 74 <10 <10 <10 <10 <100 <br /> 414102 7 600 120 9 480 130 <10 <10 <10 <10 <100 <br /> 6/25/02 7 100 120 12 610 140 <10 <10 <10 <10 <100 <br /> 9/024/02 11000 510 41 760 560 <20 <20 <20 <20 <200 <br /> 1214102 14,000 450 60 620 580 <20 <20 <20 <20 <200 <br /> 313103 8,300 330 27 470 270 <20 <20 <20 <20 <200 <br /> 6111103 8,400 270 13 430 150 <20 <20 <20 <20 <200 <br /> 919103 260 000 1 400 200 680 630 <20 <20 <20 <20 <200 <br /> 1213103 18 040 2000 430 770 690 <20 <20 <20 <20 <200 <br /> 3/25104 8 300 1 800 190 390 350 <20 <20 <20 <20 <200 <200 <2,000 <br /> 6122104 9 100 2 400 32 750 220 <50 --- — — --- — <br /> 9123104 6100 1700 49 620 200 <50 --- — — — — <br /> 1217104 3900 1,000 <10 350 100 <100 — <br /> 3/4/05 4 400 1 200 32 520 13 <25 — — — — — — <br /> 6130105 5,100 1,000 37 500 27 <0 50 <0 50 <0 50 <0 50 15 <br /> MW-9 9125/01 <50 <0 50 <0 50 <0 50 <0 50 <2 0 <2 0 <2 0 <2 0 <20 <br /> 12/18/01 <50 <0 50 <0 50 <0 50 <1 0 <2 0 <2 0 <20 <2 0 <20 <br /> 4/4/02 <50 <0 50 <0 50 <0 50 <1 0 <2 0 <2 0 <2 0 <2 0 <20 <br /> 6125102 <50 <0 50 <0 50 <0 50 <1 0 <2 0 <2 0 <2 0 <2 0 <20 <br /> 9124/02 <50 <0 50 <0 50 <0 50 <1 0 <2 0 <2 0 <20 <20 <20 <br /> 1214102 <50 <0 50 <0 50 <0 50 <1 0 <2 0 <2 0 <20 <2 0 <20 <br /> 3/3/03 <50 <0 50 <0 50 <0 50 <1 0 <2 0 <2 0 <20 <20 <20 <br /> 6111103 <50 <0 50 <0 50 <0 50 <1 0 <2 0 <2 0 <20 <2 0 <20 <br /> 919103 <50 <0 50 <0 50 <0 50 <1 0 <2 0 <2 0 <2 0 <2 0 <20 <br /> 12/3103 <50 <0 50 <0 50 <0 50 <1 0 <0 50 <0 50 <0 50 <0 50 <5 0 <br /> 3125104 <50 <0 50 <0 50 <0 50 <1 0 <0 50 <0 50 <0 50 <0 50 <5 0 <5 0 <50 <br /> 6122/04 <50 <0 50 <0 50 <0 50 <1 0 <5 0 — — — — _- — <br /> 9123104 <50 <0 50 <0 50 <0 50 <1 0 <50 --- — — — — <br /> 12/7104 <50 <0 50 <0 50 <0 50 <1 0 <5 0 -- <br /> 314105 <50 <0 50 <0 50 <0 50 <1 0 <5 0 — --- --- — — — <br /> 6130105 <50 <0 50 <0 50 <0 50 <1 0 <0 50 <0 50 <0 50 <0 50 <5 0 <br /> APEX ENVIROTECH INC <br /> SECOND QUARTER 2005 <br /> Page 5 of 9 COH01 001 <br />