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Ta* j <br /> Groundwater Monitoring Data and Analytical Results <br /> Tosco (Former Unocal) Bulk Plant#0788 <br /> 8203 East i l Ih Street <br /> Tracy, California <br /> Well tDi Date DTW GWE TPH(D) TPH(G) B T E X MTHE <br /> TOC' (ft.) (ms1) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) <br /> U-5 11/08/94 ND ND ND ND ND ND -- <br /> (cont) 02/13/95 ND 579 0.90 ND ND ND -- <br /> 44.32 10/10/95 8.47 35.85 ND ND ND ND ND ND -- <br /> 02/13/96 7.81 36.51 2,8008 5,100 240 270 250 2,300 •- <br /> 11/06196 7.31 37.01 ND ND ND ND ND ND -- <br /> 05/06/97 6.63 37.69 490' ND 0.65 ND ND ND -- <br /> 04/29/98 8.03 36.29 1,200 10 ND ND ND ND ND ND <br /> 12/01/98 S.19 36.13 12010 ND ND ND ND ND ND <br /> U-6 05/23/91 280' 240 17 6.0 3.0 22 <br /> 08/30/9I ND ND 0.5 0.5 0.87 1.9 -- <br /> 11/06/91 ND 280 8.2 4.8 18 26 -- <br /> 05/08/92 3002 ND ND ND ND ND -- <br /> 08/06/92 ND 190 2.2 0.7 8.7 26 -- <br /> 11/18/92 230 230 6.5 ND 11 16 -- <br /> 01/21/93 2,300' 6,100 400 99 460 590 -- <br /> 05126/93' 380 600 15 6.5 34 I15 -- <br /> 08/24/93 946 170 0.5 ND 3.5 5.7 -- <br /> 11/30/93 ND 120 4.1 1.6 3.1 1.9 -- <br /> 02/18/94 767 120 1.3 ND 1.8 3.6 -- <br /> 05/12/94 64 ND 1.1 ND t.4 3.5 -- <br /> 08/08/94 56' ND ND ND ND ND - <br /> 11/08/94 ND ND ND ND ND ND -- <br /> 02/13/95 910' 1,000 19 ND 64 48 -- <br /> 43.86 10/10/95 8.48 35.38 ND ND ND ND ND ND -- <br /> 02113196 7.84 36.02 2208 68 0.62 ND 0.57 ND -- <br /> 11/06/96 7.26 36.60 ND ND ND ND 0.73 0.81 -- <br /> OS/06(97 7.02 36.84 ND ND ND ND ND ND -- <br /> 04/29/98 8.08 35.78 14010 ND ND ND ND ND ND <br /> 12101198 8.22 35.64 20010 ND ND ND ND ND 32 <br /> U-7 08/06/92 ND ND ND ND ND ND - <br /> 11/18/92 502 ND ND ND ND ND - <br /> 01/21/93 ND ND ND ND ND ND -- <br /> 0788.xls/#180144 4 As of 12/01/98 <br />