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s • • <br /> r : <br /> TABLE <br /> GROUNDWATER MONITORING DATA <br /> Beacon Station No 3641 <br /> 1210 E dammer Lane,Stockton,California <br /> Depth to TOC GW <br /> Well TPHg benzene toluene ethylbenzene xylenes MTBE DIRE ETRE TAME TBA methanol ethanol EDC EDB GW Elevation Elevation <br /> Number Date (U0111, u 1 u A u A u A u 1 u A u 1 u A u A u 1 u A u 1 u 8 feet feet msl feet msl Comments <br /> VW 1 03/25/99 20000 4000 2000 900 1700 3000 <50 <5 0 <5 0 <5 0 <50 640 na no 41 70 nm nm slight odor 1 no sheen <br /> screened 06102199 23000 5800 2300 1100 1900 8300 <50 <5 0 <50 240 <100 <10 <5 0 <50 4221 nm slight odor 1 no sheen <br /> interval 08/31199 50000 14000 11000 2300 6200 20000 <50 <5 0 72 770 <2500 <50 <50 <50 4731 nm no comment <br /> 44 54 12!09199 26000 3300 1900 880 2600 8800 <50 <5 0 <50 120 <500 <50 <5 0 <50 4520 nm no comment <br /> 03101/00 13000 3500 280 600 330 6900 <20 40 <20 <200 <2500 <200 na no 4246 nm no comment <br /> 06/06/00 19000 4600 630 960 1000 7300 <20 <20 <20 400 <2000 <200 <20 <20 4176 nm clear <br /> 09114100 85000 16000 12000 2200 6300 16000 40 <20 <20 380 <2500 <200 <20 <20 4790 nm dear <br /> 12/12/00 21000 4000 2900 690 1800 6300 na no no no no no na no 4423 nm dear <br /> 03119101 9400 2600 600 430 290 6100 no no no no na na no no 41 72 nm dear <br /> 06119/01 67000 13000 8500 1600 6500 17000 no na no na no na na r; 4403 nm dear <br /> 09127/01 16000 3300 840 640 1400 5500 no no na no no no no no 5004 nm dear <br /> 12113101 84000 12000 8600 2100 10000 19000 na no no no no no na no 4655 nm Gear <br /> 03/28/02 38000 5800 4400 1100 4800 8900 na no na no no na na no 4342 1953 2389 dear <br /> 06119102 37000 6800 2900 1400 3800 13000 na na na na no no no no 4510 2557 dear <br /> 09/16/02 56000 7000 2200 1500 5100 14000 <50 <50 <50 <500 <5000 <500 <50 <50 5033 3080 dear <br /> 12/26/02 110000 11000 10000 2400 12000 20t?00 na no no no no na na no 4785 2832 dear <br /> VW 2 03/25/99 its as ns ns ns ns ns ns as ns ns ns ns ns nm nm nm dry <br /> screened 06102/99 ns ns ns ns as ns ns ns ns ns ns ns ns ns nm nm dry <br /> interval 08131/99 ns ns ns ns ns ns ns ns ns ns ns its ns ns nm nm dry <br /> 21 36' 12!09199 ns ns as ns ns as ns ns as ns ns as ns ns nm nm dry <br /> 03101100 as ns as as ns ns ns ns ns ns ns ns ns ns nm nm dry <br /> 06106100 ns ns as as as ns ns as ns as ns ns ns ns am nm dry <br /> j 09114!00 ns ns as as as ns ns ns ns nsns ns ns ns nm nm dry <br /> 12112!00 as ns as ns as ns as as ns ns ns ns as as nm nm dry <br /> 03119/01 ns ns as ns as ns ns ns ns ns ns ns as n$ nm nm dry <br /> 06119/01 as ns as as ns ns as as ns ns ns ns AS ns dry nm dry <br /> 09127/01 ns ns as ns ns ns ns as ns ns ns as ns ns dry nm dry <br /> 12!13101 ns as as as ns ns as as as ns ns as ns ns dry nm dry <br /> 03128/02 as ns as as as ns ns ns as ns ns as ns ns dry nm dry <br /> 06119/02 ns ns as ns ns ns as ns ns ns ns as ns ns dry nm dry <br /> 09116/02 ns ns as ns ns as ns ns ns ns as as its ns dry nm dry <br /> 12/26/02 ns ns ns ns ns ns ns ns ns ns ns as ns ns dry nm dry <br /> VW 3 03125/99 33000 1600 8100 1800 5400 660 <5 0 <5 0 <5 0 140 <50 <5 0 no no 4207 nm nm slight odor 1 no sheen <br /> screened 06102/99 13000 6000 180 1400 300 4000 <0 50 <0 50 2 6 85 <200 <5 0 <0 50 <0 50 4245 nm slight odor 1 no sheen <br /> interval 08/31199 11000 860 230 470 140 6900 <10 <10 <10 300 <1500 <100 <10 <10 47 66 nm no comment <br /> 4655 12109/99 11000 1200 550 560 430 6200 <5 0 <5 0 <5 0 100 <500 <50 <50 <5 0 45 60 nm no comment <br /> 03/01/00 12000 500 440 680 980 5000 <20 <20 <20 400 <2000 <200 no no 4294 nm no comment <br /> 06!06!00 5900 1400 170 340 260 5600 <2 0 <2 0 39 260 <2000 <20 <2 0 <2 0 4200 nm dear <br /> 09/14/00 26W 760 52 85 120 2400 <2 0 <2 0 <2 0 110 <250 <20 <2 0 <2 0 48 28 nm dear <br /> 12/12100 3700 220 180 140 280 5500 no na no na no no no no 44 63 nm dear <br /> 03/19/01 2600 110 72 150 160 2700 no na no no no no no no 41 81 nm dear <br /> 06/19/01 11000 2900 450 280 860 6700 na na no no no no no no 44 50 nm dear <br /> 09/27/01 860 78 10 12 26 1700 no na no no na na no na 5046 am clear <br /> 12113101 1300 280 21 33 62 2400 no no no na na no no no 46 99 nm dear <br /> 03128!02 2900 91 52 150 470 2200 no na na no no na na no 4363 2006 2357 dear <br /> 06119/02 10000 2300 280 350 1100 5400 na no no no no no no no 4546 2540 dear <br /> 09116102 1400 170 34 52 74 1900 <5 0 <50 <5 0 62 <500 <50 <5 0 <5 0 5066 3060 dear <br /> 12126102 1100 75 16 41 60 1600 no na no na no na na na 4795 2789 dear <br /> 641gmr01 As <br /> 1641 22 Page 5 of 7 HORIZON ENVIRONMENTAL INC <br />