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TABLE 1 <br /> GROUNDWATER MONITORING DATA <br /> Beacon Station No 3641 <br /> 1210 East Hammer Lane, Stockton,California <br /> Depth to TOC GW <br /> Well I TPHg benzene toluene ethylbenxene xylenes MTBE DIPEETRE TAME TBA methanol ethanol EDC EDB Gw Elevation Elevation <br /> Number Date u (ug/1) u 11 u 1Y WWI) u 1t u 11 u 1I (ug") (ug/1) u A (ug") u A u 8 feet feet msl feet msl Comments <br /> VW-4 03/25/99 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm nm dry <br /> screened 06102/99 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm dry <br /> interval 08131199 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm dry <br /> 2540' 12/09199 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm dry <br /> 03101/00 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm dry <br /> 06!06100 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm dry <br /> 09114/00 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm dry <br /> 12112100 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm dry <br /> 03119/01 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm dry <br /> 06/19101 ns ns ns ns ns As ns ns ns ns ns ns ns ns dry nm dry <br /> 09/27/01 ns ns ns n$ ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 12113/01 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 03128/02 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 06/19/02 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 09116102 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 12/26102 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 03/26/03 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> VW 5 03r25199 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm nm <br /> screened 06/02/99 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm <br /> Interval 08131!99 ns ns ns ns ns ns ns ns ns ns ns ns ns ns 4773 nm 0 05 fl FPI sheen <br /> 40 50' 12109M 100000 13000 10000 570 16000 31000 <20 <20 <20 <200 <2000 <200 <20 <20 4570 nm no comment <br /> 03101!00 27000 5100 520 1500 770 14000 <50 <50 <50 <500 <5000 <500 na na 4247 nm no comment <br /> 06/06100 43000 7700 4600 1300 3700 16000 <10 <10 <10 750 <2500 <100 <10 <10 4184 nm dear <br /> 09/14100 ns ns ns ns ns ns ns ns ns ns ns ns ns ns 4803 nm considered dry <br /> 12/12100 16000 1000 1100 480 1800 24000 na na na na na na na na 4401 nm clear <br /> 03/19/01 29000 3300 4400 740 3000 20000 na na na na na na na na 4138 nm clear <br /> 06/19/01 120000 16000 130M 2300 11000 41000 na na na na na na na na 4471 nm clear <br /> 09/27/01 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 12/13/01 23000 2000 510 180 790 26000 ns ns ns ns ns ns ns ns 4651 ns sheen <br /> 03!28!02 10000 760 580 89 330 14000 ns ns ns ns ns ns ns ns 4309 1939 -2370 no comment <br /> 06119/02 21000 3900 2300 190 750 20000 na na na na na na na na 4542 2603 no comment <br /> 09116/02 ns ns ns ns ns ns ns ns ns ns ns ns ns ns 4886 2947 no comment <br /> 12!26102 58000 5500 4200 1000 4500 35000 na na na na na na na na 4741 2802 clear <br /> 03126!03 68000 7500 8200 1300 6400 34000 na na na na na na na na 4511 2572 clear <br /> VW-6 03125/99 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm nm <br /> screened 06/02199 ns ns AS ns ns ns ns ns ns ns ns ns ns ns nm nm <br /> Interval 08/31/99 ns ns ns ns ns ns ns ns ns ns ns ns ns ns 4773 nm sheen <br /> 22 32' 12/09/99 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm dry <br /> 03/01/00 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm dry <br /> 06106/00 ns ns ns ns ns AS ns ns ns AS ns ns ns ns nm nm dry <br /> 09114/00 ns ns ns ns ns ns ns ns rs ns ns ns ns ns nm nm dry <br /> 12112100 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 03/19/01 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 06119/01 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 09127/01 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 12113101 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 03/28/02 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 06!19!02 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 09/16102 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 12126/02 ns ns ns ns ns ns ns ns ns ns ns ns ns ns 31 85 nm dry <br /> h03/26/03 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 64tgmr <br /> Pralect No 164145 Page 6 of 7 HORIZON ENVIRONMENTAL INC <br />