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<br /> HISTORICAL GROUNDWATER ANALYTICAL DATA
<br /> Cohn Property
<br /> Stockton California
<br /> Sample Date of TPH as Aromatic Volatile Organics Seven Fuel Oxygenates
<br /> Ip Sampling Gasoline Benzene Toluene Ethyl- Total :DlE ETRE MTBE TAME TBA Ethanol Methanol
<br /> Benzene xylenes
<br /> !L 1L !L !L !L L 1L 1L IL 1L 1L 1L
<br /> MW 2 11/16/98 82,000 19,000 18 000 1,300 8,200 <1 060 <1 000 <1 000 <1 000 <1,000
<br /> 417199 272 000 38,700 53,700 4,040 22,600 <66 7 <66 7 <66 7 <66 7 <6,670
<br /> 5130100 480,000 56 000 74,000 4,400 29,000 <500 <500 <500 <500 <5 000
<br /> 12114!00 --- -- -- -- -- -- --- --- --- ---
<br /> 6119/01 -- -- -- -- -- --- --- --
<br /> 9/26/01 350 000 26 000 46 000 4 000 25 000 <250 <250 <250 <250 <2 500
<br /> 12118'01 - - - -
<br /> 414/02 - - - - - - -
<br /> 6125102 - - - - -
<br /> 9124102 --- - - - - - - - -
<br /> 1214102 - - - - - - - -
<br /> 313/03 - -- - - -- - - -
<br /> 6111103 280,000 22,000 43 000 3 000 23,000 <400 <400 <400 <400 <4,000
<br /> 919103 300 000 23 000 40 000 3 700 23 000 <400 <400 <400 <400 <4,000
<br /> 1213/03 260,000 28,000 41,000 4,000 24,000 <400 <400 <400 <400 <4 000
<br /> 3126104 160 000 21 000 31 000 2 900 16 000 <400 <400 <400 <400 <4 000 <4 000 <40 000
<br /> 6122104 150,000 25,000 26,000 2,400 18 000 <2,500 --- --- --- --- --- ---
<br /> 9123104 130 000 25,000 22,000 3,200 20 000 <2 500 -
<br /> 1217104 130 000 25 000 20 000 3 400 21,000 <2 500 - - -- - --
<br /> 314105 120 000 25 000 21 000 4 800 27,000 <250 - -
<br /> 6/30105 130 000 19 000 15 000 4 600 24 000 <0 50 <0 50 <0 50 <0 50 27
<br /> 9119105 120,000 26,000 15,000 4,300 24,000 <0 50 <0 50 <0 50 <0 50 <5 0 -
<br /> MW-3 11/16/98 100,000 8,300 30,000 3,500 22,000 <1,000 <1,000 <1,000 <1000 <1000
<br /> 4f7/99 131 000 16 200 18 500 3 840 19 800 <200 <200 <200 <200 <20 000
<br /> 5130100 150000 1,900 9,100 4,300 27,000 <200 <200 <200 <200 <2000
<br /> 12!14!00 230 000 4200 15 000 4,700 28,000 <200 <200 <200 <200 <2 000
<br /> 6119101 110 000 1 400 7,700 3 400 21 000 <100 <100 <100 <100 <1,000
<br /> 9126101 210,000 7 600 23 000 4 600 27,000 <250 <250 <250 <250 <2,500
<br /> 12/18'01 170 000 17,000 26,000 2 700 15,000 <400 <400 <400 <400 <4 000
<br /> 414/02 200 000 10 000 22,000 5,300 31,000 <400 <400 <400 <400 <4 000
<br /> 6/25/02 240 000 14 000 22 000 4,700 28,000 <400 <400 <400 <400 <4 000
<br /> 9124102 280 000 29 000 36 000 3 800 23,000 <400 <400 <400 <400 <4 000
<br /> 1214102 230 000 21,000 19,000 4 400 24 000 <400 <400 <400 <400 <4 000
<br /> 3/3!03 190,000 16 000 11 000 5 300 25,000 <200 <200 <200 <200 <2 000
<br /> 6111103 160,000 13,000 4,100 4,700 27,000 <200 <200 <200 <200 <2000
<br /> 919!03 260 000 18 000 18 000 4 800 28 000 <200 <200 <200 <200 <2 000
<br /> 12/3103 140,000 15 000 3 100 4,400 23 000 <200 <200 <200 <200 <2 000
<br /> 3126/04 100 000 5 900 8 700 4 800 26,000 <200 <200 <200 <200 <2 000 <2 000 <20 000
<br /> 6122104 120 000 7200 15 000 3 700 24 000 <1 000 --- - -- -- -- -
<br /> 9123104 67,000 5,200 1 500 4,000 20 000 <1,000 -- - - -
<br /> 12/7/04 68 000 5 600 510 4 400 22,000 <500 - - - - -
<br /> 314/05 88 000 4 400 11 000 5 600 30,000 <100 - - - - -
<br /> 6130105 110 000 3 300 8 500 5200 25 000 <0 50 <0 50 <0 50 <0 50 <50
<br /> 9119/05 110,000 3,500 16,000 3,200 25,000 <0 50 <0 50 <0 50 <0 50 <50 - -
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<br /> APEX ENVIROTECH INC
<br /> THIRD QUARTER 2005
<br /> Page 2 of 9 COH01 001
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