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<br /> TABLE 5
<br /> HISTORICAL GROUNDWATER ANALYTICAL DATA
<br /> Cohn Property
<br /> Stockton,California
<br /> Sample Date of TPH as Aromatic Volatile Organics Seven Fuel oenates
<br /> ID Sampling Gasoline Benzene Toluene Ethyl- Total RIPE ETBE MTBE TAME TBA Ethanol Methanol
<br /> Senzene Xylenes
<br /> 0jg/L) 1L !L 1L 1L L L L L !L !L
<br /> SB-1-W 8127101 <50 <0 50 <0 50 <0 50 <0 50 <2 0 <2 0 <2 0 <2 0 <20
<br /> SB-2-W 8126101 <50 <0 50 <0 50 <0 50 <0 50 <20 <2 0 <2 0 <2 0 <20
<br /> SB-3-W 8131101 <50 <0 50 <0 50 <0 50 <0 50 <2 0 <2 0 <2 0 <2 0 <20
<br /> SB-4-W 8128101 17,000 5,000 72 320 770 <2 0 <2 0 <2 0 <2 0 <20
<br /> CPT-2-67 6!16/03 57 000 3 800 3 300 1 300 2,600 <20 <20 <20 <20 <200 <20 <20
<br /> CPT-2-89 6116103 <50 <0 50 <0 50 <0 50 <1 0 <2 0 <2 0 <2 0 <2 0 <20 <20 <2 0
<br /> CPT-2-100 6!16/03 130 12 070 27 7 1 <20 <2 0 <2 0 <2 0 <20 <20 <2 0
<br /> CPT-2-145 6116103 <50 <0 50 <050 <0 50 <1 0 <2 0 <2 0 <2 0 <2 0 <211 <20 <2 0
<br /> CPT-3-65 6117103 220 12 <0 50 <0 50 <1 0 <2 0 <20 <2 0 <20 <20 <2 0 <20
<br /> CPT-3-87 6117103 <50 <0 50 <0 50 <0 50 <1 0 <2 0 <20 <2 0 <20 <20 <2 0 <2 0
<br /> CPT-3-87 6117103 <50 <0 50 <0 50 <0 50 <1 0 <2 0 <2 0 <2 0 <2 0 <20 <2 0 <2 0
<br /> CPT-3-99 6117103 <50 <0 50 <0 50 <0 50 <1 0 <2 0 <2 0 <2 0 <20 <20 <2 0 <2 0
<br /> CPT-3-147 6117103 <50 <0 50 <0 50 <0 50 <1 0 <2 0 <2 0 <2 0 <20 <20 <2 0 <2 0
<br /> CPT-4-65 6116103 34,000 2,000 710 940 4 400 <2 0 <2 0 <2 0 <2 0 <20 <2 0 <2 0
<br /> CPT-4-88 6!18103 24 000 1 500 48 840 1 200 <20 <20 <20 <20 <200 <20 <20
<br /> CPT-4-99 6!18103 510 26 80 77 34 <2 0 <2 0 <2 0 <20 <20 <2 0 <2 0
<br /> CPT-4-144 6/18103 50 19 1 8 070 28 <2 0 <2 0 <2 0 <20 <20 <2 0 <20
<br /> CPT-5-85 6!19/03 4 800 21 57 50 30 <2 0 <2 0 <2 0 <2 0 <20 <2 0 <2 0
<br /> CPT-5-99 6119!03 160 34 46 1 3 74 <2 0 <20 <2 0 <20 <20 <2 0 <20
<br /> CPT-5A-123 6/19!03 <50 <0 50 <0 50 <0 50 <1 0 <2 0 <2 0 <2 0 <2 0 <20 <2 0 <2 0
<br /> MW-1 11116!98 56 000 3200 5100 2,200 13,000 <1,000 <1 000 <1 000 <1 000 <1 000
<br /> 417199 52,000 1,810 824 2,810 9110 <100 <100 <100 <100 <10,000
<br /> 5!30100 96,000 680 1,500 2,700 16 000 <200 <200 <200 <200 <2 000
<br /> 12!14100 170,000 7300 1 000 2 600 13,000 <100 <100 <100 <100 <1 000
<br /> 6!19101 62 000 520 1 100 2000 8,900 <100 <100 <100 <100 <1 000
<br /> 9126101 58 000 800 1,500 1,500 6 900 <100 <100 <100 <100 <1 000
<br /> 12118'01 280 000 25 000 36 000 4 100 25 000 <1 000 <1,000 <1,000 <1,000 <10,000
<br /> 414!02 140,000 11,000 10,000 3,300 18,000 <400 <400 <400 <400 <4000
<br /> 6125102 57,000 3,700 1,000 820 3,600 <100 <100 <100 <100 <1,000
<br /> 9124102 77,000 5,400 6 400 2,000 5,000 <200 <200 <200 <200 <2,000
<br /> 12!4!02 56 000 4 500 620 1,900 4,400 <100 <100 <100 <100 <1 000
<br /> 313103 72 000 4 900 1 100 2000 4 900 <50 <50 <50 <50 <500
<br /> 6111!03 47 000 1 900 250 780 2,200 <50 <50 <50 <50 <500
<br /> 919103 38 000 880 110 750 1,400 <50 <50 <50 <50 <500
<br /> 12!3103 38 000 2 300 33 1200 2,000 <40 <40 <40 <40 <400
<br /> 3126!04 41 000 2 700 250 1 700 3,100 <40 <40 <40 <40 <400 <400 <4 000
<br /> 6122104 35 000 6 800 47 1200 1 600 <250 - --- - --- --- -
<br /> 9/23/04 26 000 4,600 46 1 400 1,900 <250 --- --- - --- --- ---
<br /> 1217104 30 000 5 400 51 1 500 2000 <500 - - - - - -
<br /> 3/4105 26 000 840 160 1 200 2 500 <100 - - - - - -
<br /> 6130105 28,000 4,000 760 2,000 3,700 <0 50 <0 50 <0 50 <0 50 85 r-
<br /> APEX ENVIROTECH [NC
<br /> SECOND QUARTER 2005
<br /> Page 1 of 9 COH01 001
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