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I ! I ! 5 TABLE 1 I I ! GROUNDWATER MONITORING DATA I Beacon Station No 12474 d ! 3440 East Main Street,Stockton,California E I ethyl- total Depth to TOC "GW Well TPHg benzene tolu ne benzene xylenes MTBE DIPE ETBE TAME TBA methanol ethanol DCA EDB II GW Elevation Elevation !I Number Date u 1L u 1L u ilL u 1L u 1L ug/L WWI-) u !L u IL u 1L u 1L u 1L u 1L u IL feet m feet sl feet msl Comments MAW-7 03/31198 <50 <0 50 I <0 0 <0 50 <0 50 <50 na na na na na na na na 6175 2566 1-3609 screened 06/10198 <50 <0 50 <0 0 <0 50 <0 50 <5 0 na na na na na na na na 5904 -3338 no odor 1 no sheen 0 50 .interval 09108198 <50 < <0 0 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <50 <50 na na 5919 °--33 53 no odor)no sheen { I 56'76' 12/30198 <50 <0 50 <0 0 <0 50 <0 50 <50 na na na na na na na na 5718 '-31 41 no odor 1 m sheen 03125/99 <50 <0 50 <0 0 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <50 <5 0 na na 5507 29 41 na comment 06/03/99 <50 <0 50 <0 0 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <50 <50 56 <0 50 5461 11-2895 no comment 08!30199 <50 <0 50 <0 0 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <50 <50 <50 21 <0 50 5685 -31 19 no comment <50 <0 50 <0 0 <0 50 <0 50 0 50 <0 50 <0 50 <0 50 <5 0 <50 <50 47 <0 50 5668 31 02 no comment 12/10/99 <5 0 <50 <5 0 5 0 <0 50 55 61 r heen 03103100 <50 <0 50 <0 0 <0 50 <0 50 062 <0 50 <0 50 <0 50 29 95 no odor 1 no s { I <5 0 <50 9 4 4 0 <0 50 54 62 j 28 96 no odor 1 no sheen I 06!26!00 <50 <050 � <0 0 <0 50 <0 50 <D 50 <0 50 <0 50 <0 50 09/28100 <50 <0 50 1 <0 0 <0 50 <0 50 <50 na na na na na na na na 5693 }}i 31 27 no odor!no sheen 10120100 ns ns n ns ns ns ns ns ns as ns ns ns ns nm 2473 nm wellhead re surveyed 12/22/00 asns n ns ns ns ns ns ns as as as ns ns nm nm no odor 1 no sheen 03/28/01 73 62 1 15 75 <50 ns ns ns as as as as ns 5473 1'-30 00 no odor!no sheen 06127/01 e50 <0 50 I 1 <0 50 <0 50 087 <0 50 <0 50 <0 50 <50 <50 <5 0 60 <0 50 5599 31 26 no odor!no sheen 09/06101 <50 <0 50 <0 0 <0 50 <0 50 <5 0 na na na na na na na na 5803 -3330 no odor 1 no sheen 12103101 <50 ,<0 50 <0 0 <0 50 <0 50 <5 0 na na na na na na na na 5841 x'_33 68 no odor 1 no sheen 02/28/02 <50 <0 50 <0 0 <0 50 <0 50 <50 na na na na na na na na 5713 3240 no odor 1 no sheen 05/20/02 51 <0$0 1 <0 50 <0 50 092 <0 50 <0 50 <0 50 <5 0 <50 <5 0 15 <0 50 5755 2694 3061 no odor 1 no sheen 08/29102 <50 <0 50 <0 0 <0 50 <0 50 <5 0 na na na na na na na na 6063 -3369 no odor 1 no sheen 12106102 <50 <0 50 <0 0 <0 50 <0 50 096 na na na na na na na na 6074 3380 no odor!no sheen 03/05/03 <50 <0 50 <0 50 <0 50 <0 50 <5 0 na na na na na na na na 5971 _32 77 no odor!no sheen 06/03/03 2400 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <50 <5 0 47 <0 50 5864 -31 70 no odor 1 no sheen 08/28103 <50 <0 50 <0 50 <0 50 <0 50 <5 0 na na na na na na na na 6104 3410 no odor 1 no sheen 11/25103 63 <0 50 <0 50 <0 50 <0 50 063 na na na na na na na na 61 79 -34 85 no odor 1 no sheen 03/01104 <50 <0 50 13 <0 50 054 087 <0 50 <0 50 <0 50 <5 0 <50 <5 0 91 <0 50 6047 2491 '1-35 56 no odor 1 no sheen 06/08/04 110 <0 50 <0 50 <0 50 <0 50 <5 0 na na na na na na na na 6098 ii-36 07 no odor 1 no sheen 09/08104 63 <0 50 <0 50 <0 50 <0 50 <50 na na na na na na na na 6269 -3778 no odor 1 no sheen 12!09104 89 <0 50 1 5 <0 50 <0 50 <5 0 na na na na na no na na 6275 +!-37 84 no odor 1 no sheen 03/10/05 73 <0 50 28 <0 50 074 056 <0 50 <0 50 <0 50 <5 0 <50 <50 45 <0 50 61 50 -36 59 no odor!no sheen 05126/05 79 <0 50 1 0 <0 50 <0 50 <50 na na na na na na na na 6034 r1-35 43 no odor 1 no sheen 09/02/05 110' <0 50 <0 50 <0 50 <0 50 <5 0 na na na na na na na na 61 19 14-3628 no odor 1 no sheen ,I I I I I e I 4� I � II ! I I , I k 474gmrQ5x I Page f 18 HORIZON ENVIRONMEt4TAL INC PM,Kt No 1474 48