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TAPE 1 <br /> Groundwater Monitoring Data <br /> Beacon Station No 3641 <br /> 1210 E Hammer Lane,Stockton,California <br /> Depth to TOC GW <br /> Well TPHg benzene toluene ethylbenzene xylenes MTBE RIPE ETBE TAME TRA methanol ethanol EDC EDB GW Elevation Elevation <br /> Number Date (ug/1) (ug/0 (ug/1) {ugA) (ugA) (ug11} (ugA} (ugA} (ugA) (uglq {ugA) (ugA) (ug/1) (ugA) {feet) (feet msl) (feet ms) Comments <br /> VW 3 03125/99 33000 1600 8100 1800 5400 660 <5 0 <50 <50 140 <50 <50 na na 4207 nm nm slight odor 1 no sheen <br /> screened 06/02/99 13000 6000 180 1400 300 4000 <0 50 <0 50 26 85 <200 <50 <0 50 <0 50 4245 nm slight odor 1 no sheen <br /> interval 08/31/99 11000 860 230 470 140 6900 <10 <10 <10 300 <1500 <100 <10 <10 4766 nm no comment <br /> 45-55' 12109/99 11000 1200 550 560 430 6200 <5 0 <5 0 <50 100 <500 <50 <5 0 <50 4560 nm no comment <br /> 03/01/00 12000 500 440 680 980 5000 <20 <20 <20 <200 <2000 <200 na na 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 clear <br /> 09114/00 2600 760 52 85 120 2400 <20 <2 0 <20 110 <250 <20 <2 0 <2 0 4828 nm clear <br /> 12/12/00 3700 220 180 140 280 5500 na na na na na na na na "63 nm Gear <br /> 03/19101 2600 110 72 150 160 2700 na na na na na na na na 4181 nm clear <br /> 06119/01 11000 2900 450 280 860 6700 na na na na na na na na 4450 nm clear <br /> 09/27/01 860 78 10 12 26 1700 na na na na na na na na 5045 nm clear <br /> 12/13/01 1300 280 21 33 62 2400 na na na na na na na na 4699 nm clear <br /> VW-4 03/25199 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 08/31/99 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm dry <br /> 25-40 12/09/99 its 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 /> 06!06100 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm dry <br /> 09/14/00 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm dry <br /> 12/12/00 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm dry <br /> 03/19/01 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm dry <br /> 06/19/01 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 /> 12113/01 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> VW-5 03/25199 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm nm <br /> screened 06/02199 ns ns ns 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 0 05 ft FP1 sheen <br /> 40-50 12109199 100000 13000 10000 570 15000 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 /> 06106/00 43000 7700 4600 1300 3700 16000 <10 <10 <10 750 <2500 <100 <10 <10 4184 nm Gear <br /> 09114/00ns ns ns ns ns ns ns ns ns ns ns ns ns ns 4803 nm considered dry <br /> 12112/00 16000 1000 1100 480 1800 24000 na na na na na na na na 4401 nm clear <br /> 03/19101 29000 3300 4400 740 3000 20000 na na na na na na na na 41 38 nm clear <br /> 06/19/01 120000 16000 13000 2300 11000 41000 na na na na na na na na 4471 nm Gear <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 nm sheen <br /> 641gmr01 xls <br /> 1641 44 Page 5 of 6 HORIZON ENVIRONMENTAL INC <br />