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HISTORICAL SUMMARY OF ANALYTICAL RESULTS ATE FOOTHILAWARY LANDFILL Units:me,unless noted Sample Designation L-1 L-1 L-1 L-1 L-1 L-1 L-1 L-1 L-1 Sampling Date 3/7/05 3/28/06 1/31/07 2/5/08 1/15/09 8/18/09 2/3/10 1/25/11 1/11/12 Trichlorofluoromethane NT NT NT NT 0.58* NT <0.11 <0.13 <0.13 1,2,3-Trichloropropane NT NT NT NT NT NT <0.30 <0.24 <0.24 Vinyl Chloride <0.5 99 220 34 25 NT 3.4 5.4 2.9 Total Xylenes 12 13 <l.l 16 21 NT 56 50 18 Acetone 1400 300 22* 130 10 NT 690 420 1300 Acrylonitrile NT NT NT NT NT NT <1.2 <1.2 <1.2 tert-Amyl Alcohol NT NT NT NT NT NT <6.5 <9.2 38 tert-Butyl Alcohol NT NT NT NT 130 NT 1100 1400 980 Carbon disulfide NT NT NT NT NT NT <0.35 <0.38 <0.38 trans-1,4-Dichloro-2-butene NT NT NT NT NT NT <1.4 <1.4 <1.4 Diisopropyl Ether NT NT NT NT 3.7 NT 1.9 1.4 0.53 Ethanol NT NT NT 3,200 <50.0 NT <45 <50 <50 Ethly tert-butyl ether(ETBE) 3 NT NT NT NT NT 1.3 1.0 0.79 Hexachloroethane NT NT NT NT NT NT <0.13 <0.16 <0.16 2-Hexanone NT NT NT NT NT NT <3.4 <3.4 <3.4 2-butanone(MEK) 4100 480 <1.7 120 <1.9 NT 910 260 1900 Iodomethane NT NT NT NT NT NT <0.44 <0.47 <0.47 4-meth I-2pentanone(MIBK) 30 20 <1.5 <9.5 <1.9 NT 74 18 31 Vinyl Acetate NT NT NT NT NT NT <2.4 <1.8 <1.8 1,2,4-Trimethylbenzene <0.13 0.43* <0.36 1.5* 1.6 NT NT NT NT 1,3,5-Trimethylbenzene <0.15 0.19* <0.4 <1.6 0.62* NT NT NT NT 4-Isopropyltoluene <0.1 2.4 <0.34 2.0* <0.39 NT NT NT NT Isopropylbenzene NT NT NT NT 0.88* NT NT NT NT Isopropyltoluene NT 0.51* NT NT NT NT NT NT NT n-Propylbenzene <0.13 0.16* <0.37 <1.6 <0.38 NT NT NT NT tert-Amyl Methyl Ether NT NT NT NT 2.2 NT NT NT NT tert-Butyl Ethyl Ether NT NT NT NT 1.7* NT NT NT NT NR=Not Required NT=Not Tested ND=Not Detected °=Trace Concentration n:\consulting\data\shared\proj ects\xls\gmr\79\791289\FH-H ist.x is