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• HISTORICAL OROUNER ANALYTICAL DATA •
<br /> Cohn Property
<br /> Stockton Caldomis
<br /> Sample Date of TPH as Aromatic Volatile Organ Seven Fuel Ox enates
<br /> ID Sampling Gasoline Benzene Toluene Ethyl- Total DIPS ETRE MTBE TAME TBA Methanol Ethanal
<br /> Benzene Xylenes
<br /> 1L 1L 1L IL 1L
<br /> PZ 1a(d) 9126/01 310 000 46,000 47,000 3,400 17,000 4250 <250 <250 <250 <2 500 - -
<br /> 12M1101 270,000 37000 33,000 2,300 13,000 <400 4400 <400 <400 44,000 - -
<br /> 12/17/01 320,000 52000 45000 3,300 19,000 •1,000 <1000 <1,000 41,000 <10,000 - -
<br /> 12/27/01 290,000 51,000 42,000 3,400 19,000 <1,000 41,000 <1000 41,000 <10,000 --- ---
<br /> 113102 290,000 45000 36,000 3,000 17,000 41,000 <1000 41,000 <1,000 <10,000 - -
<br /> 1214102 400 000 45,000 53,000 4,400 23,000 41,000 <1,000 <1 000 41,000 410,00➢ - -
<br /> 313103 440,000 50,000 48 000 3,100 22 000 <500 <50U <500 <500 <5 000 - ---
<br /> PZ lb(D) 9126101 310,000 35,000 47,000 3,400 18 000 <250 4250 <250 •250 <2 500 - -
<br /> 12/11/01 310,000 36,000 46,000 3,100 17 000 4400 <400 <400 <400 <4 000 - ---
<br /> 121/7/01 290000 37,000 51,000 3300 18,000 41,000 •1,000 <1,000 41,000 <10,000 - ---
<br /> 12/27/01 300,000 43,000 53000 3,800 21,000 41,000 <1,000 <1,000 <1,000 <10,000 --- -
<br /> 113102 300 000 36,000 46,000 3 100 17 000 <1,000 41,000 <1 000 41,000 <10,000 - -
<br /> 1214102 360,000 36 000 53,000 4,100 23 000 41,000 <1 000 41,000 <1 000 410,000 - -
<br /> 313103 430,000 39 000 57,000 3,400 24,000 <500 <500 <500 <500 <5 000
<br /> Notes
<br /> TPH Total Petroleum Hydrocarbon - Not Analyzed
<br /> DIPE Di isopropyl Ether 1 CC(Effluent} sample collected between the first and second carbon vessels filtering the facility's water
<br /> ETBE Ethyl Tertiary Butyl Ether 20C(Effluent) sample collected after both carbon vessles filtering the facrhty's water
<br /> MT9E Mathyt Tertary Butyl Ether yg1L mrcmgrams per liter
<br /> TAME Ternary Amyl Mathyl Ether
<br /> TBA Terbary Butyl Ether
<br /> 12 DCA 12 Drchlomerthane
<br /> EDB Ethyl Drbromide
<br /> APEX ENVIROTECH INC
<br /> RESULTS REPORT
<br /> Page 10 of 10 COH01 001
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