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<br /> TABLE 1
<br /> GROUNDWATER MONITORING DATA
<br /> Beacon Station No-12474
<br /> 3440 East Main Street,Stockton,California
<br /> ethyl- total Depth to TOC GW
<br /> Well TPHg benzene toluene benzene xylenes MTBE RIPE ETRE TAME TBA methanol ethanol EDC EDB GW Elevation Elevation
<br /> Number Date I jug/L) (ug] (ug/L u IL (u IL) ((ug/L 1(uq[L) [u/L)( u IL (u 1L) ((ug/L u 1L (u IL)(u IL} feet feet ms!l (feet msl Comments
<br /> MW-1 03131/98 96 <0.50 10.50 <0,50 10,50 <5.0 no no no no no no 62.27 26.29 -39,98
<br /> screened 06110/98 ns ns AS ns ns ns ns ns ns ns ns ns59.59 -3330 no comment
<br /> interval 09/08198 ns ns no ns ns ns ns ns ns ns ns ns 59.68 -33.39 no comment
<br /> 75'-90' 12730198 ns ns ns ns ns ns ns ns ns ns ns ns 57.70 -31.41 no comment
<br /> 03/25/99 150 10.50 <0.50 10.50 10.50 <0,50 10,50 -0.50 10.50 -5.0 150 <5.0 55.71 -29.42 no Comment
<br /> 06!03199 150 10.50 <0.50 10.50 10.50 10,50 10.50 10.50 <0.50 15.0 <50 15.0 10.50 10,50 55,13 -28.84 no comment
<br /> 08f30199 <50 10.50 <0.50 10.50 <0.50 <0.50 -0.50 <0.50 <0.50 <5.0 <50 <5,0 <0.50 <0,50 57.38 -31.09 nowmment
<br /> 12110199 150 10.50 10.50 10.50 10.50 10,50 10,50 <0,50 10.50 15,0 150 15,0 <0.50 10,50 57,18 -30.89 noeomment
<br /> 03/03100 94 <0.50 <0.50 =0.50 <0.50 <0.50 10,50 <0.50 10.50 <5,0 <50 15,0 <0.5o 10.50 56.22 -29.93 noodor/no sheen
<br /> 06126100 130 <0.50 <0.50 10.50 10.50 10,50 <0,50 10,50 10,50 15.0 <50 15,0 <0.50 1050 55.12 -28.83 no odorino sheen
<br /> 09/28100 240 10.50 10.50 <0.50 <0.50 15.0 na no no no no no na no, 57.43 -31.14 no ododno sheen
<br /> 12/22/00 180 10.50 10.50 10.50 <0.50 <5.0 no no na no no no na no 56,56 -30.27 no ododno sheen
<br /> 03128101 180 10.50 1.5 <0.50 1 7 <5.0 118 no no na na na no no 55,61 -29.32 no odor/no sheen
<br /> 06!27101 350 10.50 <0.50 <0.50 10.50 10.50 10.50 <0,50 10,50 <5.0 150 <5.0 10.50 10.50 57.43 -31.14 no odor/no sheen
<br /> 09106101 520 10.50 0.68 10.50 1.2 15,0 no no no no no no no na 59-22 -32.93 no ododno sheen
<br /> 12103/01 500 10.50 <0.50 <0.50 10.50 <5.0 na no no no na no na no 59.91 -3362 no odor/no sheen
<br /> 02/28/02 790 <0.50 7.8 <0.50 10,50 <5.0 na no no no no no no na 58.48 -32.19 no ododno sheen
<br /> 05120702 670 10.50 0.64 10,50 <0.50 <0.50 10.50 <0.50 <0.50 <5.0 150 <5.0 0.55 10.50 58.76 28.28 -30,48 no odor/no sheen
<br /> I
<br /> MW-2 03/31/98 5000 1100 86 71 270 <25.0 no no no na no no 51.45 25.42 -36.03
<br /> screened 06/10/98 ns ns ns no ns ns ns ns ns ns ns ns 58.76 -33.34 no comment
<br /> interval 09108198 ns ns ns ns ns ns ns ns no ns ns ns 58.82 -33.40 no comment
<br /> 76'41.5' 12130M ns ns ns ns ns ns ns ns ns ns ns ns 56.63 -31.41 n0 comment
<br /> 03/25/99 1600 130 1.7 1.1 50 0.62 <0.50 <0,50 10,50 6.1 150 25 54,90 -29.48 no comment
<br /> 06/03199 14000 8300 730 510 2100 10.50 10.50 10.50 10.50 15.0 150 15,0 28 0.72 54,27 -28.85 no comment
<br /> 08/30199 420W 8900 5000 1200 5800 0.62 2.0 <0,50 <0,50 <5-0 <50 15.0 45 40 56.48 -31.06 nocommenl
<br /> 12110/99 12000 1900 680 33D 1200 <5,0 15.0 <5.0 15,0 150 150 <100 15.0 <5.0 56.33 .30,91 nowmment
<br /> 03/03/00 5100 1800 33 160 62 15.0 15.0 15.0 15,0 <50 150 150 15.0 -5-0 54.91 -79.49 no ododno sheen
<br /> 06!22!00 220W 5900 530 630 1700 8.5 <5.0 <5.0 <5,0 150 <500 <200 15.0 <5.0 54.14 -28,72 slight odortno sheen
<br /> 091213/00 16000 4100 800 260 1500 150 no no no na no no na na 56.55 -31.13 slight ododno sheen
<br /> 12122!00 6100 1200 120 200 330 150 no na no no no no no no 55.73 -30.31 slight ododno sheen
<br /> 03/2810131000 7600 610 1000 3300 1200 no na no no na no no na 54.69 -29,27 odor/no sheen
<br /> 06/27101 21000 5800 570 640 2100 <25 <25 <25 <25 1250 15000 1900 <25 125 56.48 -31.06 odor/no sheen
<br /> 09/06/01 6900 2000 500 210 840 1100 no na no na no na no no 56.67 -33.25 ododno sheen
<br /> 12/04101 28000 6700 1600 910 4000 <250 no no no no no no no no 58.98 -33.56 odor/no sheen
<br /> 03/01102 57000 12000 1200 1400 6100 <500 no no no na no na no no 51.62 -32.20 ododno sheen
<br /> 05120/02 53000 11000 1500 1300 6200 150 150 150 150 <5w -5000 1500 150 150 57.91 27.44 -30.47 no odor/no sheen
<br /> 474q.,00 his
<br /> P,oyed No 1474 44 - Page 1 of 7 HORIZON BNVIRO MENTAL INC,
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