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y. TABLE 1 GROUNDWATER MONITORING DATA Beacon Station No.3641 1210 E.Hammer Lane,Stockton,California Depth to TOC G WellTPHg benzene toluene ethylbenzene xylenes MTBE RIPE ETRE TAME TSA methanol ethanol DCA EDB ow Elevation Elevation Number Dale u 11 Uqil) u 11 u 11 (u ) fu u 1) (u ) Ju A uQ/1) (u 1 u ) (u ) (feet) (feetmsl) (feetmsl) Comments VW-3 03125199 33000 1600 8100 1800 5400 660 <5.0 <5.0 <5.0 140 <60 <5.0 na na 42.07 nm nm slight odor/no sheen screened 06102199 13000 6000 180 1400 300 4000 <0.50 <0 50 2.6 85 e200 <5.0 <0 50 <0.50 42.45 nm slight odor/no sheen interval 08/31199 11000 860 230 470 14D 6900 <10 <10 <10 300 <1500 <100 <10 <10 47.66 nm no comment 45'-55' 12109t99 11000 1200 550 560 430 6200 <5.0 <5.0 <5.0 100 <500 <50 <5.0 <5.0 4560 nm no comment 03/01100 12000 500 440 680 980 5000 <20 <20 <20 <200 <2000 <200 no no 42.94 94 nm no comment 06/06/00 5900 1400 170 340 260 5600 <2.0 <2,0 3.9 260, <2000 <20 <2.0 <2.0 42.00 nm clear 09114100 2600 760 52 85 120 2400 -2.0 <2.0 <2-0 110 <250 <20 <2-0 <2.0 48.28 nm clear 12112100 3700 220 180 140 280 5500 no no na na no no no no 44.63 nm clear 0119101 2600 110 72 150 160 2700 no na no no no na no no 41.81 nm clear 06/19/01 11000 2900 450 280 860 6700 no na no no no no no n: 44.50 nm clear 09127/01 860 78 10 12 26 1700 no no no na no no na n 50.45 nm clear 12113/01 1300 280 21 33 62 2400 no no no no no no no no 46.99 nm clear 031213102 2900 91 52 150 170 2200 no no no no na no na no 43.63 20.06 -23.57 clear 06119102 10000 2300 280 350 1100 5400 no no na no na no no no 45.46 -25.40 clear 0911&02 140D 170 34 52 74 1900 <5.0 <5,0 <5.0 62 <500 <5D <5.0 <5.0 50.66 -30-60 clear 12J26102 1100 75 16 41 60 1600 no no no no no no no no 47.95 -27.89 clear 03126103 2100 150 15 64 150 1900 no no na no no no no na 45.55 -2549 clear 06127103 6200 1600 100 130 390 6500 <10 <10 elo <100 <1000 <100 <10 no 47.41 -27-35 clear 09M903 ns ns ns ns ns ns as ns ns ns. ns as ns ns nm nm dry 12/30103 ns ns ns ns ns ns ns ns no ns ns as ns ns 50.17 -3011 clear 03/26104 2200 590 12 32 130 2700 <10 <10 <10 <100 <1000 <100 <10 na 47.70 -27.64 clear 06117104 ns ns ns ns as no ns ns ns ns ns as ns ns 51.65 -31.59 not sampled 09109104 ns ns ns ns ns ns ns as ns ns no ns ns ns dry dry dry 12/16/134 ns ns ns ns ns ns ns ns ns ns ns as ns ns 53.50 -33.44 notsampled 03)03)05 1100 48 48 38 85 620 <1-5 <1.5 <1.5 3700 <154 <15 <1.5 no 49.65 -2959 clear VW-5 03!25199 ns ns ns ns ns as ns ns as ns ns ns as as nm nm nm screened 015=199 as 115 ns ns ns ns n$ ns as ns ns ns ns as nm nm interval OB13V99 ns its ns ns ns ns ns ns n5 ns ns ns ns ns 47.73 nm 0.05 ft FP1 sheen 40'-50' 12109199 100000 13000 10000 570 16000 31000 <20 <20 <20 <200 <2000 <200 <20 <20 45.70 nm no comment 031011131) 27000 5100 520 1500 770 14000 <50 <50 <50 <500 <5D00 <500 no no 42.47 nm no comment 06106100 43000 7700 4600 1300 3700 16000 <10 <10 <10 750 <2500 <100 <10 <10 41.84 nm clear 09114/00 ns ns ns as ns as as ns ns ns ns as ns as 4803 nm considered dry 12/127017 16000 1000 1100 480 1800 24000 Aa no no no no no no no 44.01 nm clear 03119101 29000 3300 4400 740 3000 20000 no na na no no no no no 41.38 nm clear D6119/01 120000 16000 13000 2300 11000 41000 no no na no no no na no 44.71 nm clear 09127101 ns as ns ns ns ns as ns no ns ns as as ns dry dry dry 12J13101 23000 2000 510 180 790 26000 as ns ns ns ns as ns FIS 46.51 nm sheen 03128)02 10000 760 580 89 330 14000 ns ns ns ns as ns ns ns 43.09 19-39 -23.70 no comment 06119i02 21000 3900 2300 190 750 20000 na no no no no na no no 46.42 -2603 no comment 09/16102 ns ns ns ns ns ns ns ns ns ns as ns as ns 48.86 -29.47 no comment 12126!02 58000 5500 4200 1000 4500 35000 no no no ne no no no no 47.41 -28.02 clear 03126/03 68000 7500 8200 1300 WO 34000 no no no no no no no no 45.11 -25.72 clear 06127/03 ns ns ns ns as ns ns ns as as as ns ns ns 47.45 -28.06 considered dry 09119103 as ns ns ns ns ns ns ns as ns ns ns ns ns dry dry dry 12130/03 ns ns as TIS ns ns Ds as ns ns as ns ns ns dry dry dry 03126104 48000 4900 3200 730 4700 25000 <50 <50 <50 1000J <5000 <500 <50 no 4734 -27-95 odor 06117104 ns ns ns ns ns ns ns ns ns as ns ns ns as dry dry dry 09109104 as was ns "s ns ns ns ns ns as as ns ns ns dry dry dry 216104 no no ns ns ns as ns ns ns ns as ns as ns dry dry dry 03103105 ns ns ns ns no ns ns ns as ns ns ns ns as 48.06 -28.67 considered dry 641q-x1s Project No.1641.47 Page 9 of 10 HORIZON BIMRONMENTAL INC.