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HISTORICAL GROUN ER ANALYTICAL DATA
<br /> Cohn Property
<br /> Stockton,California
<br /> Sample flats of TPH as ;Benxe-ne
<br /> romatic Volatile Or an¢s Seven Fuel Ox nates
<br /> ID Sampling Gasoline Toluene Ethyl- Total DIPE ETBE MTBE TAME TBA Methanol Ethanol
<br /> Benzene Xylenes
<br /> WWW L 1L L /L
<br /> MW 2 11/16/98 82 000 18000 1300 8,200 <1,000 <1 000 <1,000 <1 000 <1,000 -4!7/99 272,000 53,700 4 040 22,600 <66 7 c66 7 <66 7 <66 7 <6 670 -- -
<br /> 5/30/00 480,000 56,000 74,000 4,400 29,000 <500 c500 <500 <500 <5000 ---
<br /> 12114l00 - - - - -
<br /> 6119/01 - - - - -
<br /> 9@6101 350,000 26000 46,000 4,000 25,000 <250 <250 <250 c250 <2,500
<br /> 12/18'01 - --- - -
<br /> 414102 - -
<br /> 6/25102 - - - - - - -
<br /> 9124102 -
<br /> 12/4/02 - - - - - -
<br /> 313103
<br /> 6111/03 280,000 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 /> 12W3 260,000 28 000 41 000 4 000 24 000 <400 <400 c400 <400 <4,000 -
<br /> 3126104 160 000 21,000 31 000 2 900 16 000 000 <400 <400 <400 <4 000 <400 <400
<br /> 6122104 150 000 25 000 26 000 2 400 16 000 <2,500 - --- - - -
<br /> 9123104 130,000 25,000 22,000 3,200 20,000 <21500 --- -
<br /> 12l7104 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 /> 6130105 130 000 19,000 15 000 4 600 24,000 <0 50 c0 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 /> 12/8/05 120 000 31 000 12,000 4 600 26 000 e25 <25 <25 <25 <250 <2 0 c2 0
<br /> 3121106 49,000 9,500 1,900 1,800 10,900 000 <100 <100 <100 0,200 <25 000
<br /> MW 3 11/16/98 100,000 8,300 30,000 3,500 22,000 <1,000 <1,000 <1,000 <1,000 <1,000
<br /> 417199 131,000 16,200 18,500 3,840 19,800 <200 <200 <200 <200 <20,000 - -
<br /> 5130/00 150000 1,900 9100 4,300 27,000 <200 <200 <200 <200 c2,000 - -
<br /> 12/14/00 230 000 4200 15 000 4 700 28 000 <200 <200 <200 <200 <2,000 - -
<br /> 6/19101 110,000 1,400 7,700 3,400 21,000 <100 <100 000 <100 <1,000 - ---
<br /> 9126/01 210000 7,600 23,000 4,600 27,000 <250 <250 <250 <250 <2500 - ---
<br /> 12118'01 170,000 17,000 26,000 2,700 15,000 <400 c400 <400 <400 <4,000 - -
<br /> 4/4102 200,000 10 000 22 000 5 300 31 000 <400 <400 <400 <400 <4 000 -
<br /> 6125/02 240,000 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 /> 1214/02 230,000 21 000 19 000 4,400 24,000 <400 <400 <400 c400 <4,000 -
<br /> 313l03 190,000 16,000 11,000 5,300 25,000 <200 <200 <200 <200 <2,000 -
<br /> 6/11103 160,000 13,000 4,100 4,700 27,000 <200 <200 <200 <200 <2,000 -
<br /> 919103 260 000 18 000 18,000 4 800 28 000 <200 <200 <200 <200 <2,000 - -
<br /> 1213103 140 000 15 000 3100 4,400 23,000 <200 <200 <200 e200 <2,000 -
<br /> 3126/04 100,000 5,900 8,700 4,800 26000 <200 <200 <200 <200 12,000 <200 <200
<br /> 6/22/04 120000 7,200 15,000 3,700 24,000 0,000 --- - - - - -
<br /> 9123104 67,000 5,200 1,500 4,000 20,000 <1,000 - -
<br /> 126104 68,000 5 600 510 4,400 22,000 <500 - --- - -
<br /> 314105 88000 4,400 11,000 5,600 30000 <100 --- -
<br /> 6130/05 110 000 3,300 8 500 5,200 25,000 <0 50 <0 50 <0 50 c0 50 <50 - -
<br /> 9119/05 110 000 3,500 16,000 3,200 25,000 <0 50 <0 50 <0 50 <0 50 e50
<br /> 12/8105 73,000 3,100 2000 4 400 24 000 <10 <10 <10 <10 <100 <2 0 <2 0
<br /> 3121106 13,000 490 290 140 3,800 <20 <20 <20 <20 <240 --- <5,000
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<br /> APEX EWROTECH INC
<br /> Page 2 of 10 RESULTS REPORT
<br /> COH01 001
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