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! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! <br /> TABLE 4 <br /> Analytical Results of Ground Water Samples - 19 February 2002 <br /> SIERRA LUMBER <br /> 375 West Hazelton Avenue, Stockton, Callfomia <br /> MW-1 MW 2 MW-3 MW 4A MW-4B MW-5 MW-6 MW-7 MW-8 <br /> 20 to 40 20 to 40 20 to 40 8 to 33 45 to 50 10 la 35 10 to 35 9 to 34 15 to 35 <br /> TPH-g 990' 32,000' - 14,000 34,000` - ND<50 - <br /> Benzene 16 300 - 14 4,100 - ND<O 5 - <br /> Toluene EPA 2 9 260 - 120 47 1 2 - <br /> Ethylbenzene 8015M/8020 48 1,200 - 460 1,900 ND<O 5 - <br /> Xylene 28 5,500 1,300 2,100 ND<O 5 - <br /> MTBE ND<5 ND<100 ND<35 ND<50 ND<5 <br /> MTBE ND<l ND<5 ND<5 28 ND<1 <br /> DIPE 21 ND<5 ND<5 6 2 ND<1 <br /> TAME ND<1 ND<5 ND<5 ND<5 ND<1 - <br /> ET13E ND<1 ND<5 ND<5 ND<5 - ND<1 <br /> TBA 82 0M ND<5 ND<25 ND<25 ND<25 ND<5 - - <br /> Methanol ND<500 ND<2500 ND<2500 ND<2500 ND<500 <br /> Ethanol ND<50 ND<250 - ND<250 ND<250 - ND<50 <br /> 1,2-DCA ND<l ND<5 ND<5 ND<5 - ND<l - <br /> EDB ND<1 ND<5 - ND<5 ND<5 - ND<l <br /> Notes All samples reported in micrograms per liter(ugll),TPH-g total petroleum hydrocarbons quantified as gasoline <br /> MTBE methyl tertiary butyl ether,DIPE di-isopropyl ether,TAME tent-amyl methyl ether,ETBE ethyl tert-butyl ether,TBA tert-butanol,1,2-DCA 1,2-dichloroethane,EDB ethylene <br /> dibromide,ND not detected,NA not analyzed,< indicates constituents were not detected at concentration greater than the reporting limit shown <br /> ' unmodified or weakly modified gasoline is significant <br /> 1 <br /> 3 <br /> Advanced Ceo.Environmental,Inc. <br />