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1 <br /> s j 1 TABLE 1 <br /> GROUNDWATER MONITORING DATA <br /> I Former Beacon Station No 12419 <br /> �I 2350 Watlerltso Road,Stockton, California <br /> ethyl Depth to TOG GW <br /> I Well TPHg benzene toluene benzene xylenes MTBEi DIPE� ETSE TAME TBA methanol ethanol DCA EDB GW Elevation Elevation <br /> Number Date (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (feet) (feet sea level) (feet sea level) Comments <br /> MW 10 12/02/98 ns ns ns ns ns ns ns 1 ns ns ns ns ns ns ns 2087 wellhead survey <br /> screened 12!30198 180 <0 50 <0 50 <0 50 <0 50 <s 0 na j na na na na na na na 4584 2497 no odor I no sheen <br /> interval 03/26/99 140 064 <0 50 <0 50 072 <0 50 I' <0 50 <0 50 4 50 92 <50 <5 0 na na 4165 2078 no odor 1 no sheen <br /> 41 66 06102/99 160 <0 50 <0 50 <0 50 4050 <0 50 <0 50 <0 501 <0 50 12 <50 <5 0 94 <0 50 4096 2009 no odor 1 no sheen <br /> I 08/31/99 120 <0 50 <0 50 <0 50 <0 50 <0 50 I .050 4 50 <0 50 93 <50 <50 65 <0 50 4574 2487 no comment <br /> � I <br /> 12!09!99 56 <0 50 <0 50 -050 <0 50 c0 50 <0 50I <0 50 <0 50 <50 <50 <50 26 <0 50 4746 2659 no comment <br /> 02/21/00 55 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <50 <50 <5 0 33 <0 50 4591 a 2504 no odor 1 no sheen <br /> I 05118!00 <50 <0 50 31 <0 50 <0 50 <0 54 I 4 50 <0 50 -050 c5 0 <50 <50 na na 41 11 2024 no odor/no sheen <br /> j 09/26/00 ns ns ns ns ns ns ns ns ns ns ns ns ns n$ nm nm well access blacked <br /> 12/20/00 <50 <0 50 70 <0 50 <0 50 <5 0 ` na na na na na na na na 4789 2702 no odor/no sheen <br /> 03/27/01 <50 <0 50 <0 50 <0 50 <0 50 <50 1 na na na na na na na na 4762 2675 no odor I no sheen <br /> 06/26/01 <50 <0 50 <0 50 <0 50 <0 50 <0 50 II <4 50 <0 50 <0 50 <50 <50 -450 <0 50 '050 4905 2B 18 no odor/no sheen <br /> 09105101 <50 <0 50 14 <0 50 <0 50 <5 0 na na na na na na na na 5405 3318 no odor I no sheen <br /> 11130/01 <50 <0 50 <0 50 <0 50 <0 50 <50 na na na na na na na na 5437 3350 no odor/no sheen <br /> 021N= <50 <0 50 <0 50 .050 4 50 <5 0 I� na na na na na na na na 51 01 3014 no odor 1 no sheen <br /> 05/16/02 1000 10 110 22 130 270 1!<0 50 <0 50 25 56 <150 <5 0 066 <0 50 5099 2242 2857 no odor 1 no sheen <br /> 09/12/02 58 '050 <0 50 <0 50 <0 50 <5 0 Ir na na na na na na na na 5891 3649 no odor I no sheen <br /> I PJD4102 <50 <0 50 <0 50 <0 50 <0 50 <50 na na na na na na na na 5756 3514 no odor 1 no sheen <br /> 02/17/03 <50 <0 50 <0 50 <0 50 <0 50 <0 50 1 na na na na na na na na 5444 3202 no odor/no sheen <br /> 06102!03 <50 <0 50 <0 50 <0 50 4 50 <0 50 c0 50 <0 50 <0 50 <5 0 <50 <5 0 092 <0 50 5353 31 11 no odor I no sheen <br /> 09118!03 670 <0 50 <0 50 <0 50 4 50 <5 0 { na na na na na na na na 5981 3739 no odor 1 n6 sheen <br /> 11/24/03 <50 <0 50 <0 50 <0 50 <0 50 <0 50 na na na na na na na na 5862 3620 no odor 1 no sheen <br /> 02/23/04 67 <0 50 <0 50 <0 50 <0 50 <0 50 <0 54 <0 50 <0 50 <50 <50 <5 0 1 1 -060 5528 3286 no odor/no sheen <br /> 06/07/04 <50 <0 50 <0 5D <0 50 <0 50 <5 0 nana na na na na na na 5539 3297 no odor I no sheen <br /> 09/07/04 ns ns ns ns ns ns r ns ns ns ns ns ns ns ns 61 06 3864 insufficient water <br /> 12/10/04 1300 21 350 59 39 <50 na I na na na na na na na 5964 3722 odor!no sheen <br /> 11 f <br /> �I <br /> J <br /> ] I <br /> i <br /> { <br /> I <br /> r <br /> 9q 04 IS <br /> Pro,ecr No 141 {il Page I* <br /> HORIZON ENVIRONMAC <br /> k <br />