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� ww � 1� � !! � � iw � i♦ � 1♦ � � TABLE 2 ANALYTICAL RESULTS OF GROUND WATER SAMPLES EPA Method 8015/5020/8260 Modified Former Curtiss Pontiac-Buick - 2450 Toste Road, Tracy, California (µg/1) " - ethyl , methyl tertiary - Well Same Depth � "Ethyl isr�gtapyl tertiaty temaryw� amyl terti i b* I D. x TPH-g 'l M-4 binzene Toluene Xylenes methyl alcohol Screen Date GW x benzene ethd butyl etller butyl ether ether T (RIPE) (ETI14) (MTBE) (TAW) (TPA) MW-1A 02-27-98 490 4,300 1,400 200 41 29 560 <5 0 <5 0 <5 0 <5 0 <5 0 23-28 09-28-98 706 220 <50 15 3.7 45 17 <1 0 <1 0 <1 0 <1 0 <5 0 12-17-98 686 58 <50 42 31 20 30 <1 0 <1 0 <1 0 03-25-99 689 71 <50 081 0.93 12 082 <1 0 <1 0 <1 0 <1 0 <5 0 06-21-99 709 200 68 16 21 44 21 <10 <1 0 <1 0 <1 0 <5 0 09-21-99 694 63 <50 57 39 <0 5 25 <1 0 <1 0 <1 0 <1 0 <5 0 12-07-99 697 <50 <50 21 083 <0 5 17 <1 0 <1 0 <1 0 <1 0 <5 0 03-17-00 678 <50 <50 <0 5 <0 5 <0 5 <0 5 <1 0 <1 0 <1 0 <1 0 <5 0 07-17-00 702 <50 <50 1.2 <0 5 <0 5 <0 5 --- --- --- --- 10-17-00 665 <50 <50 3.1 4.3 088 4,7 <1 0 <1 0 <1 0 <1 0 <5 0 01-30-01 673 <50 52 12 0.56 085 24 <1 0 <1 0 <1 0 <1 0 <5 0 04-25-01 693 <50 <50 <0 5 <0 5 <0 5 <0 5 <1 0 <1 0 <1 0 <1 0 <5 0 07-27-01 699 <50 <50 <0 5 <0 5 <0 5 <0 5 <1 0 <1 0 <1 0 <1 0 <5 0 MW-1B 02-27-98 525 5,000 1,200 480 140 89 600 <5 0 <5 0 <5 0 <5 0 <5 0 5- 15 09-28-98 701 2,000 160 530 260 55 130 <1 0 <1 0 99 <1 0 <5,0 12-17-98 702 560 93 270 36 13 22 <1 0 <1 0 14 <1 0 <5 0 03-25-99 688 3,600 290 1,300 120 110 88 <5 0 <1 0 23 <1 0 <5 0 06-21-99 700 3,400 130 740 400 59 220 <1 0 <10 13 <1 0 <5 0 09-21-99 690 2,400 210 540 200 58 120 <1 0 <1 0 30 <1 0 <5 0 12-07-99 705 1,300 84 390 79 31 55 <1 0 <1 0 89 <1 0 <5 0 03-17-00 662 190 <50 78 1.9 30 2,1 <1 0 <1 0 83 <1 0 <5 0 07-17-00 692 610 66 110 49 17 44 --- --- --- --- _-- 10-17-00 668 120 <50 29 12 2.1 5.2 <1 0 <1 0 50 <1 0 <5 0 01-30-01 702 1,800 140 710 39 48 16 <1 0 <1 0 20 <1 0 <5 0 04-25-01 687 1,300 84 400 27 43 22 <10 <1 0 12 <1 0 <5 0 07-27-01 691 140 <50 24 11 41 11 <10 <10 <1 0 <10 <5 0 Advanced GeoEiivlronmental Inc