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i � • <br /> TABLE 1 <br /> GROUNDWATER MONITORING DATA <br /> Beacon Station No 3641 <br /> 1210 E Hammer Lane,Stockton,California <br /> Depth rO TOC GW <br /> Well TPHg benzene toluene ethylbenzene xylenes MTBE DIPE ETRE TAME TBA methanol ethanol DCA EDB GW Elevation Elevation <br /> Number Hate I (u A) (ug/1) (ug") (u A) (UP (ug") (u 11) (ugll) (u 11) (ug11) (up) (ugll) (ug/1) (ugA) (feet) (feet msl) (feet msl) Comments <br /> MW-4 10/02/97 35000 9300 600 1100 3600 1800 <5 0 <50 <50 <500 <50000 <10000 no no 5745 100 00 4255 no sheen no odor <br /> screened 03131198 2000 14 39 <0 50 75 <50 no no no no no no no no 4972 5028 no sheen slight odor <br /> interval 06110/98 2400 6 12 <0 50 t 1 12 no no no no no no no no 4663 5337 no sheen slight odor <br /> 50-75 09!013198 660 29 1 48 <0 50 120 <0 50 <0 50 <0 50 11 230 <5 0 no no 4987 5013 no sheen no odor <br /> 12!30198 180 <0 50 088 <0 50 12 28 no no no no no na no no 44 56 5544 no sheen no odor <br /> 03/25199 80 <0 50 <0 50 <0 50 <0 50 8 <0 50 <0 50 <0 50 56 <50 <5 0 no no 4194 5806 no sheen no odor <br /> 06102M 160 <0 50 <0 50 1050 <0 50 41 <0 50 <0 50 <0 50 25 <50 <5 0 <0 50 <0 50 4290 5710 no sheen no odor <br /> 08/31199 460 86 <0 50 085 <0 50 540 <0 50 <0 50 <0 50 40 <50 <5 0 <0 50 <0 50 4839 5161 no comment <br /> 12/)9199 <50 <0 50 <0 50 <0 50 <0 50 440 <0 50 <0 50 <0 50 24 <50 <5 0 <0 50 <0 50 4546 5454 no comment <br /> 03101/00 100 <0 50 <0 50 <0 50 <0 50 110 <0 50 <0 50 <0 50 13 <500 <50 no no 4298 5702 no comment <br /> 06/06/00 200 <0 50 <0 50 <0 50 <0 50 62 <0 50 <0 50 <0 50 33 <200 <50 <0 50 <0 50 4253 5747 clear <br /> 09!14100 120 073 <0 50 <0 50 <0 50 1100 <0 50 <0 50 22 70 <700 <50 <0 50 <0 50 48-58 5142 Gear <br /> 12112100 <50 <0 50 <0 50 <0 50 <0 50 420 no na no na na no no na 4433 5567 clear <br /> 03!19101 <50 <0 50 <0 50 <0 50 <0 50 140 no na no na na no no no 41 85 5815 clear <br /> 06119/01 60 <0 50 <0 50 <0 50 <0 50 220 no na no na no na no no 4565 5435 clear <br /> 09!27101 <100 <1 0 <1 0 <1 0 <1 0 350 no no na no no no no no 5062 4938 clear <br /> 12113/01 52 <0 50 <0 50 <0 50 'Co 50 320 na na na na na na na na 4687 5313 clear <br /> 03/28/02 <50 <0 50 <0 50 <0 50 <0 50 56 na no no no no no na no 4355 1997 2358 clear <br /> 06119/02 61 <0 50 <0 50 <0 50 <0 50 84 no no na no no no no no 4621 2624 clear <br /> 09/16/02 <100 <10 <10 <10 <10 260 <10 <10 <10 18 <100 <10 <10 <10 5116 3119 Clear <br /> 12126/02 <50 <0 50 <0 50 <0 50 <0 50 65 no na no no na no na na 4783 -2786 dear <br /> 03126/03 <50 <0 50 <0 50 <0 50 <0 50 27 no no na no na no no no 4558 2561 dear <br /> 06!27103 <50 <0 50 <0 50 <0 50 <0 50 42 <0 50 <0 50 <0 50 <5 0 <50 <5 0 <0 50 no 4830 2833 Gear <br /> 09/19/03 150 32 "050 97 <0 50 390 no no no no no no no na 5475 3478 clear <br /> 12130103 <50 <0 50 <0 50 <0 50 <0 50 96 no no no no no no no no 5015 -3016 dear <br /> 03126104 <50 4050 <0 50 <0 50 <0 50 39 <0 50 <0 50 <0 50 <5 0 <50 <50 <0 50 no 4788 2791 dear <br /> 5414mr As <br /> Page 4 of 11 HORIZON ENVIRONMENTAL INC <br /> Proico No 164147 <br />