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Table 1 - Groundwag
<br /> onitorin Data •
<br /> Beacon Station No. 474
<br /> 3443 East Main Street,Stockton, California
<br /> Well Date TPHg 1 B T E X Depth to TOC GW
<br /> Number ug/L ug/L ug/L ug/L ug/L GW Elevation Elevation Comments
<br /> MW-9 03/31/98 <50 <0.50 <0.50 <0.50 <0.50 62.59 26.58 -36.01 reported as MW-IA
<br /> scrcete' 06/1W98 66 <0.50 <0.50 <0.50 <0.50 59.91 -33.33 reported as MW-IA
<br /> interv81. 09/08/98 <50 <0.50 <0.50 <0.50 <0.50 59.99 -33.41 no odor/no sheen
<br /> 56'-76' 12/30/98 <50 <0.50 <0.50 <0.50 <0.50 58.01 -31.43 no odor/no sheen
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<br /> 03/25/99 <50 <0.50 <0.50 <0.50 <0.50 56.02 -29.44 no comment
<br /> 06/03/99 92 <0.50 <0.50 1.0 5.7 55.43 -28.85 no comment
<br /> 08/30/99 58 <0.50 <0.50 <0.50 <0.50 57.68 -31.10 no comment
<br /> 12/10/99 140 <0.50 <0.50 <0.50 <0.50 57.49 -30.91 no comment
<br /> WV-1 09/08/98 170,000 36,000 47,000 3,300 24,000 58.88 NM nc strong odor/no sheen
<br /> act eea. 12/30/98 190,000 34,000 49,000 3,300 24,000 57.10 nc Petrol.odor/no sheen
<br /> 03/25/99 260,000 37,000 55,000 4,800 32,000 55.05 nc no comment
<br /> 50'45! 06/03/99 120,000 20,000 26,000 3,500 23,000 54.19 nc no comment
<br /> : ................ ..
<br /> 08/30/99 130,000 25,000 46,000 3,900 25,000 56.28 nc no comment
<br /> 12/10/99 200,000 22,000 35,000 3,300 23,000 56.42 nc no comment
<br /> VW4 09/08/98 86,000 19,000 6,900 3,100 20,000 59.10 NM nc strong odor/no sheen
<br /> sereeu 12/30/98 79,000 29,000 1,600 3,700 16,000 57.28 nc Petrol.odor/no sheen
<br /> 03/25/99 89,000 14,000 2,700 3,200 13,000 55.23 nc no comment
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<br /> 54'-65' 06/03/99 39,000 10,000 1,600 2,900 11,000 54.44 nc no comment
<br /> 08/30/99 50,000 9,200 1,500 3,500 12,000 56.53 nc no comment
<br /> 12/10/99 64,000 9,300 2,200 2,800 9,700 56.61 nc no comment
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<br /> Notes:
<br /> TPHg=total petroleum hydrocarbons as gasoline na=not analyzed
<br /> B=benzene ns=not sampled
<br /> T=toluene nm=not measured
<br /> E=ethylbenzene NM=Not Measured
<br /> X W xylenes nc=not calculated
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<br /> 99QMtable.Q4 Page 3 of 3 HORIZON ENVIRONMENTAL INC.
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