ARCHIVED REPORTS_2003 FEASABILITY STUDY REPORT AND SITE ASSESSMENT WORK PLAN

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Table 1 Groundwater Elevation and Analytical Data Chevron Bulk Terminal 100-1621 22888 South Kasson Road Banta,Califomia Well Depth Groundwater Groundwater SPH SPH Total SPH TPH as TPH as Ethyl- Total MtBE Well Date Elevation To Water Elevation Elevation ThUmess Removed Removed Diesel Gasoline Benzene Toluene Benzene Xylenes MtBE EPA 8260B Number Gauged (feet MSL) (feet TOC) (feet MSL) Change(ft) (feet) (gallons) (gallons) (P/L) (v/L) (v/L) (p/L) (P/L) UJ/L) (p/L) (/,/L) MW-4A 08/21/85 - - - - - ND 58 ND ND ND ND (MW-4) 09/03/87 - - - - - 50 ND ND ND ND _ 10/13/88 - - - - - 4700 ND ND ND ND ND 0222/89 21.32 10.70 10.62 - - - - ND ND ND ND ND 04/14/89 10.35 10.97 0.35 - - - ND ND ND ND ND ND 07/18/89 - - - - ND ND ND ND ND ND 0820/89 7.91 13.41 - 10/05/89 7.94 13.38 -0.03 - - ND ND ND ND ND 01/18/90 10.34 10.98 -2.40 - - ND ND ND ND ND ND 04/17/90 9.74 11.58 0.60 - - ND ND ND ND ND ND 07/19/90 -- - - - - - ND ND ND ND ND ND 10/18/90 - - - - - ND ND ND ND ND ND 01/14/91 - - - - - - ND ND ND ND ND ND 04/04/91 9.74 11.58 - - - - 04/10/91 -- - - - - ND ND ND ND ND ND 07/10/91 6.76 14.56 - - - - ND ND ND ND ND ND 06/01/92 7.84 13.48 -1.08 - - - ND ND ND ND ND ND 08/12/92 811 1321 -027 - - - ND ND ND ND ND ND 11/02/92 984 11.48 -1.73 - - - ND ND ND ND ND ND 02/26/93 5.66 15.66 4.18 - - - ND ND ND ND ND ND 06/02-03/93 8.41 12.91 -2.75 - - - ND ND ND ND ND 1 09/02-03/93 8.36 12.96 0.05 - - - 12/03-06/93 9.38 11.94 -1.02 - - - ND ND ND 0.4 ND 0.5 03/01-02/94 9.91 11.41 -0.53 - - - ND ND ND ND ND ND 06/01/94 10.47 10.85 -0.56 - - - 110 ND ND ND ND ND 08/16-17/94 11.00 10.32 -0.53 - - - ND ND ND ND ND ND 11/21/94 10.44 10.88 0.56 - - <50 <50 <0.5 <0.5 <0.5 <0.5 02/23/95 5.02 16.30 5.42 - - - <50 <50 <0.5 <0.5 <0.5 <0.5 05/30/95 8.98 12.34 -3.96 - - - <50 <50 <0.5 <0.5 <0.5 <0.5 08/07/95 8.82 12.50 0.16 - - - 170' <50 <0.5 <0.5 <0.5 <0.5 11/02/95 10.05 1127 -1.23 - - - 250` <50 <0.5 <0.5 <0.5 <0.5 02/01/96 8.81 12.51 124 - - 110' <50 <0.5 <0.5 <0.5 <0.5 -- 05/01/96 8.75 12.57 0.06 - - - 160` <50 <0.5 <0.5 <0.5 <0.5 <2.5 08/08/96 9.10 1222 -0.35 - - - 220' <50 <0.5 <0.5 <0.5 <0.5 3.9 11/04/96 9.77 11.55 -0.67 - - - 430` <50 <0.5 <0.5 <0.5 <0.5 <2.5 02/05/97 5.76 15.56 4.01 - - - 110' <50 <0.5 <0.5 <0.5 <0.5 <2.5 05/12/97 8.36 12.96 -2.60 - - - 200` <50 <0.5 <0.5 <0.5 <0.5 5.2 08/12/97 9.30 12.02 -0.94 - - - 180' <50 <0.5 <0.5 <0.5 <0.5 <5.0 11/04/97 10.15 11.17 -0.85 - - - 200' <50 <0.5 <0.5 <0.5 <0.5 <5.0 02/10/98 5.49 15.83 4.66 - - - 140` <50 <0.5 <0.5 <0.5 <0.5 6.3 05/26/98 7.56 13.76 -2.07 - - - 165 <50 <0.5 <0.5 <0.5 <0.5 5.19 08/26/98 8.57 12.75 -1.01 - - - 215 <50 <0.5 <0.5 <0.5 <0.5 6.42 11/19/98 9.62 11.70 -1.05 - - - 181 <50 <0.5 <0.5 <0.5 <0.5 6.39 02/22/99 7.91 13.41 1.71 - - 166' <50 <0.5 <0.5 <0.5 <0.5 14.2 06/14/99 9.48 11.84 -1.57 - - <100 <0.5 <0.5 <0.5 <0.5 <10.0 09/01/99 8.01 13.31 1.47 - - <50 <50 <0.5 <0.5 <0.5 <0.5 <5.0 11/30/99 9.83 11.49 -1.82 - - - <100 <0.5 <0.5 <0.5 <0.5 <10.0/<10.0° 0228/00 7.46 13.86 2.37 - - - 262 <100 <0.5 <0.5 <0.5 <1.0 <10.0 06/27/00 8.15 13.17 -0.69 0.00 0.00 0.00 <50 <50 <0.50 0.74 <0.50 1.4 -- 4.5 5of33 Chevron\1001621\G Wtablel stQt2003