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Groundwater Monitoring Data and Analytical Results
<br /> Tosco(Former BP Oil)Service Station#11195
<br /> 16500 South 1-5
<br /> Lathrop,California
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<br /> 11/21/01 10.89 -1.13 -- <120 <1.2 <1.2 <1.2 <1.2 1,60012,000'
<br /> MW-1 02/07/02 8.90 8.0-23.0 0.86 - <500 <5.0 <5.0 <5.0 <5.0 2,400/1,800'
<br /> (cont) 05/23102' 9.86 -0.10 - <1,000 <10 <10 <10 <20 --11,900'
<br /> 14.42 08/15/02"-" 10.33 4.09 - <1,000 <10 <10 QO <20 1,100
<br /> I 1118-19/0216.1s 10-72 3.70 - <1,000 <10 <10 <10 <20 2,000
<br /> 02J13-1410316," 9.83 4.59 - <50 <0.50 <0.50 <0.50 4.0 120
<br /> 05112-1310316 10.17 4.25 - <50 <0.50 <0.50 <0.50 <1.0 <2.0
<br /> 1
<br /> MW-2
<br /> 8.90 12/21/92 10.96 8.0-23.0 -2.06 - ND ND ND ND ND --
<br /> 05/17/93 8.20 0.70 -- 120 1.8 0.6 1.2 l -
<br /> 09/15l93 9.58 -0.68 - 2,800 97 ND3 290 250 -
<br /> 01/12/94 10.28 -1.38 - 51 ND ND ND ND 130
<br /> 05/12/94 9.57 -0.67 -- 64 ND ND ND ND 120
<br /> 10/07/94 10.36 -1.46 -- 86 ND ND ND ND -
<br /> 12/08/94 10.53 -1.63 -- 2,300 ND ND ND ND -
<br /> 02/21/95 8.24 0.66 1,100 2.7 ND3 ND3 ND3 --
<br /> 06/09/95 7.76 1.14 -- -- -- - - --
<br /> 08/31/95 9.58 -0.68 -- 550 ND3 ND3 ND3 ND3 2,500
<br /> 11/02/95 10.15 -1.25 - -- -- -- - - --
<br /> 02/28/96 6.81 2.09 - 90 2.1 ND3 2 ND 1,400
<br /> 09/05/96 9.12 -0.22 - ND ND ND3 NO3 ND ND
<br /> 03/25/97 6.32 2.58 -- 1,300 ND ND3 ND3 ND 3,600
<br /> 10/15/97 I0.42 -1.52 - 670 ND ND3 ND3 ND 21,000
<br /> 01/15/98 9.28 -0.38 -- 17,000 ND ND3 ND3 ND 16,000
<br /> 05/07/98 6.23 2.67 -- 67,000 ND 14D3 ND3 ND 110,000
<br /> 09/03/98 8.42 0.48 - 31,000 ND3 ND3 ND3 ND 33,000
<br /> 12/23/98 8.98 -0.08 - 350 ND NO ND3 ND 390
<br /> 12/31/98 INACCESSIBLE-PAVED OVER - - -- -- -- -- -
<br /> 03/22l99 INACCESSIBLE-PAVED OVER - -- -- - -- -- --
<br /> 14.20 09/15/98 8.58 5.62 - 602 ND ND ND ND 43,000'
<br /> I l I95.xls/#180175 2 As of 05/13/03
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