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Table 1 Groundwater Monitoring Results using EPA methods 8015m,8020, and 8260(pg/L) IWel ID Date DTW TPH-dTPH TPH-m B T E X MTBE ETBE TAME TBA • MW-3 Aug-96 10401 610 8000 NA 610 170 966 540 1700 Screened Apr-97 9 25' 1800 30000 NA 3200 2000 1400 1000 14000 5'to 25'bg Mar-98 7 10' <500 42000 NA 7290 500 <25 560 29400 Sep--98 10 08' 600 126000 <500 1 3570 190 854 13571 13600 Dec-98 10 04' 1300 4300 <500 870 63 400 703 3700 Feb-99 897 3600 2500 <500 318 18 110 142 1100 Jul-99 10221 260 100 260 26 09 3 1 3 2 360 Nov-99 10 57 12000 3700 12000 140 19 87 250 540 Jan-00 9 58' 133000 3700 1 33000 150 21 120 280 90 May-00 9 65' 6800 4100 10000 119 6 69 130 150 Sep-00 10 37' 6670 10600 <50 701 32 442 828 120 Dec-00 9 97 6470 1570 <5,000 24 1 18 36 31 A -01 957 <50 809 <50 175 3 24 28 250 Aug-01 9 85' <50 5980 <50 1410 25 196 258 1300 Nov-01 10 20' <50 218 NA 38 1 06 8 8 58 110 A 02 1072' 14200 9750 <50 1810 297 627 407 370 MW-3R Jun-02 10951 <50 3310 <50 398 256 128 241 2600 Screened Oct-02 10941 <50 3790 <50 494 117 235 106 3100 ' Y to 20' Jan-03 9 34' <50 1540 <50 307 27 536 15 5500 Mar-03 10 00' <50 798 <50 53 6 16 657 297 2800 Jun-03 10 13' <50 668 <50 612 09 232 95 3100 Oct-03 10 02' <50 431 <50 46 07 106 29 2300 Dec-03 9701 <50 984 <50 194 1 5 199 62 6000 Mar-04 9 82' <50 <50 <50 05 <0 3 16 03 96 <2 5 <2 5 Jun-04 10 05' <50 <50 <50 09 <0 3 1 0 3 1000 32 2 9 10 60' NA 167 NA 92 <0 3 47 <0 3 1000 29 26 rab Sample Sep-04 10 60' NA 2640 NA 916 65 231 78 43000 79 86 Mar-05 11 19' NA 342 NA 171 04 106 25 3600 <10 11 Jun-05 It 70' NA 450 NA 5 6 <0 5 5 3 <0 5 1000 <5 <5 Sep-05 1138 NA 1100 NA 91 <1 28 <2 945 44 42 39 3 1)1 P E 72 vt MW-4 Mar-98 6 20' <500 <50 NA <0 5 <0 5 <0 5 <1 <5 04 Screened Sep-98 9 66' <500 80 <500 16 <0 5 16 28 <10 6'to 26'bg Dec-98 9 45' <500 110 <500 <5 04 05 14 42 Feb-99 8 36' <500 <50 <500 09 06 <0 5 <1 <10 Jul-99 9 81' 85 <50 85 <0 3 <0 3 <0 3 <03 <5 I Nov-99 10 14' <50 <50 <50 <0 3 <0 3 <0 3 <0 3 <5 Jan-00 904' <50 <50 <50 <0 3 <0 3 <0 3 <0 3 <5 Ma -00 9 04' <63 <50 <500 <0 3 <0 3 <0 3 <0 3 <5 S 990' <50 <50 <50 <0 3 <0 3 <0 3 <0 3 <5 Dec-00 937 <50 <50 <5,000 <0 3 <0 3 <0 3 <0 3 <5 Apr-01 9 04' <50 <50 <50 <0 3 <0 3 <0 3 <0 3 <5 Aug-01 9 41' <50 <50 <50 <0 3 <0 3 <0 3 <0 3 <5 ' Nov-01 9 79' <50 <50 NA <0 3 <0 3 -003 <0 3 <5 Apr-02 1 10 19' <50 <50 <50 <0 3 <0 3 <0 3 <0 3 <5 Jun-02 10 03' <50 <50 <50 <0 3 <0 3 <0 3 <0 3 <5 Oct-02 10381 <50 <50 <50 <0 3 <0 3 <13 <0 3 <5 ' Jan-03 9—IF <50 <50 <50 <0 3 <0 3 <0 3 <0 3 <1 Mar-03 9 50' <50 <50 <50 <0 3 <0 3 <0 3 <0 3 <1 Jun-03 9 62' <50 <50 <50 <0 3 <0 3 <0 3 <0 3 <1 Oct-03 9 53' <50 <50 <50 <0 3 <0 3 <0 3 <0 3 <1 ' Dec-03 9 20' <50 <50 <50 <0 3 <0 3 <0 3 <03 -TI Mar-04 9 26' <50 <50 <50 <0 3 <0 3 <0 3 <0 3 <0 5 <0 5 <0 5 • Jun-04 959 <50 <50 <50 <0 3 <0 3 <0 3 <0 3 <0 5 <0 5 <0 5 2