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TABLE 3
<br /> Historical Groundwater Monitoring and Analytical Data -
<br /> Ranch Market
<br /> 23569 South Santa Fe Road
<br /> Riverbank,California
<br /> Well NoJ Ethyl- EPA method 8260 B
<br /> Elevation Date Benzene Toluene benzene Xylenes TPH-G MTBE I TBA DIPE ETBA TAME 1,2-DCA EDB DTW'• SPT WTE
<br /> (TOC)* (p ) (µ ti) (R /L) (N /L) (p ) Ot fL) (P R-) (W /L) (R 0-) (p /L) (P n-) (P n-) (ft) (ft) (ft)
<br /> oil Boring Grab Water Samples - __ -- --
<br /> .1 01/23/98 36,400 47,100 3,990 2,000 238,000 a ND ND ND ND ND __
<br /> epth Discrete Grab Water Samples _ ..
<br /> P-1 07/18/00 <0.50 <0.50 <0.50 <0.50 120 b 1.2 6.2 <0.50 <0.50 <0.50 <0.50 <0.50 32-34 d
<br /> P-2 07/17/00 130 96 15 45 680 b 12 6.0 <0.50 <0.50 <0.50 <0.50 <0.50 32-34 d -- --
<br /> P-3 07/17/00 3.1 <0.50 <0.50 <0.50 <50 b <0.50 <5.0 <0.50 <0.50 <0.50 <0.50 <0.50 32-34 d --
<br /> P-4 07/18/00 1.4 <0.50 <0.50 <0.50 d0 b 11 <5.0 <O.So <O.SO <0.50 <0.50 <0.50 36-37 d
<br /> B-1 07/24/00 110 530 62 340 2,200 b SA d.0 <0.50 <0.50 <0.50 <0.50 <0.50 75-78 d
<br /> B-2 07/25/00 53 056 1.6 4.9 140 b 5.3 <5.0 <0.50 <0.50 <0.50 <0.50 <0.50 75-78 d -- --
<br /> B-3 08/10/00 <0.50 <0.50 <0.50 <0.50 <50 b <0.50 <5.0 <0.50 <0.50 <0.50 <0.50 <0.50 35-37 e -- --
<br /> roundweter Monitoring Wells --
<br /> W.1 17/09/98 5,120 7,390 696 5,020 65,900 a 840 <<20 <<5 <50 <50 26.36 0.00 79.38
<br /> 105.74 12/25/99 8,150 10,700 1,020 4,750 72,900 a 210 <20 <5 c5 <5 <5 <5 27.66 0.00 78.08
<br /> 04/06/00 3,300 2,100 130 3,800 24,000 b 320 49 <2.0 <<5 <2.0 2.9 <2.0 25.87 0.00 79.87
<br /> 08/16/00 13,000 13,000 1,200 7,400 80,000 b 1,600 240 3.2 <2.0 <2.0 18 6.4 27.99 0.00 77.75
<br /> 11/16/00 880 630 34 740 6,800 b 83 <20 <2.0 <2.0 <2.0 <2.0 <2.0 27.29 0.00 78.45
<br /> 01/03/01 3,000 2,100 150 1,600 14,000 b 320 62 <5.0 <5.0 <5.0 <5.0 <5.0 27.30 0.00 78.44
<br /> 04/11/01 4,600 3,200 220 1,900 22,000 b 410 130 <10 <10 <IC <IO <111O 26.86 0.00 78.88
<br /> W-2 12/09/98 4,730 5,470 561 .3,300 45,800 a 350 <400 <I00 <100 <I00
<br /> .. -- 25.90 0.00 79.42
<br /> 105.32 12!25/99 3,840 2,930 230 1,210 19,800 a 300 <20 <5 <5 <5 <5 <5 27.19 0.00 78.13
<br /> 04/06/00 8,100 5,400 680 4,100 42,000 b 850 <100 <2.0 <2.0 <2.0 15 <10 25.42 0.00 79.90
<br /> 08/16/00 8,500 4,700 730 2,900 37,000 b 750 33 <2.0 <2.0 <2.0 11 c2.0 27.31 0.00 78.01 •
<br /> 11/16/00 1,500 330 22 320 4,700 b 100 <50 <5.0 <5.0 <5.0 <5.0 <5.0 26.80 0.00 78.52
<br /> 01/03/01 1,300 360 29 250 3,800 b 110 <50 <5.0 <5.0 <5.0 <5.0 <5.0 26.84 0.00 78.48
<br /> 04/11/01 5,400 1,200 280 1,100 17,000 b 340 Q00 <20 <20 c2p <20 <20 20.40 0.00 78.92
<br /> W-3 12109/98 913 1,530 165 1,360 17,800 a 43 <20 <5.0 <5.0 <5.0
<br /> -- -- 26.46 0.00 79.35
<br /> 105.81 12/25/99 1,750 1,170 184 698 10,300 a <5 <20 <5 <5 <5 <5 <5 27.78 0.00 78.03
<br /> 04/06/00 1,200 1,700 480 2,800 24,000 b 20 6.8 <0.50 <0.50 <0.50 2.7 <1.0 26.03 0.00 79.78
<br /> 08/16/00 5,800 5,700 680 2,400 30,000 b 92 41 <2.0 <2.0 <2.0 13 <2.0 28.53 0.00 77.28
<br /> 11/16/00 780 980 430 2,700 24,000 b 11 <20 <2.0 <2.0 <2.0 <2.0 <2.0 27.41 0.00 78.40
<br /> 01/03/01 210 150 28 220 2,600 b 3.8 <10 <LO <1.0 <1.0 <1.0 <L0 27.45 0.00 78.36
<br /> 04/11/01 3,400 2,700 310 2,500 24,000 b 65 <100 <IO <IO <10 <10 <IO 26.99 0.00 78.82
<br /> 5/10/01
<br /> File:PmjedVtiverbank\Tables\RB-01-2Q-GW-1 Page 1 of 5
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