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Groundwater Monitoringii ata and Analytical Results
<br /> Tosco (Former BP Oil) SS#11195
<br /> 16500 South 1-5
<br /> Lathrop, Califomia
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<br /> Well
<br /> IDI Date .:.:I)TW �:�.GWY.� �:TFH(]Q
<br /> 1: MTBE
<br /> ss sm .........
<br /> b (pp pp
<br /> (pp
<br /> ..........
<br /> .
<br /> MW-3 02/21/95 9.11 0.68 4,900 6.4 ND' 370 400
<br /> (cont) 06/09/95 8.59 1.20
<br /> 08/31/95 10.46 -0.67 5,500 11 ND' 890 460 4,300
<br /> 11/02/95 11.05 -1.26
<br /> 02/28/96 7.66 2.13 1,600 3.2 ND 3 270 227 1,200
<br /> (D) 02/28/96 1,400 2.8 NW 240 204 1,100
<br /> 09/05/96 9.99 -0.20 3,700 ND3 ND3 420 ND3 2,100
<br /> 03/25/97 7.18 2.61 5,300 16 ND 3 ND 3 ND 3 7,400
<br /> (D) 03/25/97 5,400 ND 3 ND 3 ND 3 ND' 7,200
<br /> 10/15/97 11-32 -1.53 1,500 9.1 2-3 320 73.5 8,700
<br /> (D) 10/15/97 1,400 8.4 1.5 250 57 7,900
<br /> 01/15/98 10.14 -0.35 24,000 20 ND' ND3 ND 3 21,000
<br /> 05/07/98 7.10 2.69
<br /> 09/03/98 9.32 0.47 81,000 ND 3 ND 3 360 100 78,000
<br /> (D) 09/03/98 66,000 ND' ND 3 350 100 73,000
<br /> 12/23198 9.98 -0.19 62,000 4.2 ND 3 210 5.1 77,000
<br /> 12/31/98 INACCESSIBLE-PAVED OVER
<br /> 03/22/99 8.60 1.19 12,000 ND 3 ND' ND 3 ND 12,000
<br /> 15.10 09/15/98 9.50 5.60 4,100 ND 11 370 50 23,000'
<br /> 9.79 05/20/99 8.61 1.18 ND ND ND ND ND 2,890/4,690'
<br /> 08/11/99 10.27 -0.48 ND' ND' ND 3 29.9 ND 3 47,300/61,0001
<br /> 11/19/99 10.29 -0-50 3,800a 46 ND3 73 380 32,000/38,000'
<br /> MW-4
<br /> 9.03 12/21/925.6 11.06 -2.03 ND 10,000 ND 3 3.5 300 540
<br /> 05/17/93 8.25 0-78 6,600 7.7 3.3 840 1,000
<br /> 09/15/93 9.64 -0-61 16,000 ND 3 ND' 1,000 1,300
<br /> (D) 09/15/93 16,000 18 ND 3 1,000 1,200
<br /> 01/12/94 10.38 -1.35 3,200 6.2 1.4 150 112
<br /> 05/12/94 9.70 -0.67 160 ND 2.5 0.7 ND
<br /> 10/07/94 10.46 -1.43 13,000 11 2.1 1,100 33
<br /> 12/08/94 10.62 -1.59 5,400 20 27 490 54
<br /> 02/21/95 9.29 0.74 11,000 ND' ND 3 990 460
<br /> 11195.xls/#180175 3 As of 11/19/99
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