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,California Well Depth Groundwater Groundwater SPH SPH Total SPH TPH as TPH as Ethyl- Total MtBE Well Date Elevation To Water Elevation Elevation Thiclmess Removed Removed Diesel Gasoline Benzene Toluene Benzene Xylenes MtBE EPA 82608 Number Gauged (feet MSL) (feet TOC) (feet MSL) Change(tL) (feet) (gallons) (gallons) (p/L) (P/L) (p/L) (p/L) (N/L) (.U/L) (`/L) MW-11 05/01/96 5.54 12.65 0.87 - - 1,200 520 320 <2.5 92 <2.5 <12 (cont.) 08/08/96 6.24 11.95 -0.70 - - - 2,000 2,600 1300 <12 <12 <12 <62 11/04/96 6.87 11.32 -0.63 - - - 1,800 1,300 570 <5.0 8.7 <5.0 <25 02/05/97 - - 05/12/97 5.45 12.74 - - - 680' 260 93 <1.0 3.0 <1.0 470 08/12/97 6.50 11.69 -1.05 - - 660' 230 86 <0.50 <0.50 <0.50 500 11104197 11.12 7.07 -4.62 - - - 700 230' 32 <0.50 <0.50 <0.50 750 02/10/98 2.50 15.69 8.62 - - 900' 99 31 <0.50 1.4 0.74 740 05/26/98 4.66 13.53 -2.16 - - 1,550 <1,000 401 <10 <10 <10 <100 08/27/98 6.08 12.11 -1.42 - - - 1,860 2,840 1620 <12.5 26.8 <12.5 <125/26' 11/16/98 6.62 11.57 -0.54 - - - 1,730 1,640 723 <10 <10 <10 126 02/22/99 4.89 13.30 1.73 - » - 915' 383 135 <2.0 3.33 2.65 671 06/14/99 6.60 11.59 -1.71 - - - 1,220 3,150 2,000 <5.0 <5.0 <5.0 <100 09/01/99 5.18 13.01 1.42 - - - 1,410 2,720 1,550 7.2 11.60 14.30 <50 11/30/99 6.83 11.36 -1.65 - » - 1,130' 1,380 405 312 8.50 37.00 97.4 02/28/00 4.46 13.73 2.37 - - - 500 730 26.0 228 1.81 8.90 807 06/27/00 5.74 12.45 -128 0.00 0.00 0.00 710 720 180 1.3 9.4 <0.50 -- 940 08/21/00 5.11 13.08 0.63 0.00 0.00 0.00 <200 1,100 470 <2.0 10.0 <2.0 160 11/30/00 6.94 1125 -1.83 0.00 0.00 0.00 740 830 160 <2.0 <2.0 <2.0 1,900 03/06/01 6.52 11.67 0.42 0.00 0.00 0.00 860 360 27 <2.0 <2.0 <2.0 1,200 04/23/01 6.88 11.31 -0.36 0.00 0.00 0.00 310 <500 10 <5.0 <5.0 <5.0 1,800 08/09/01 19.12 6.38 12.74 1.43 0.00 0.00 0.00 1,900 2,600 990 4.4 23.0 <2.5 230 10/16/01 Destroyed --------------- MW-12B 06/23/89 - - - - - - - - NO ND NO NO NO -- (MW-12) 06/01/92 - - - - - - - (DM-1) 08/12/92 11/02/92 - - - - - - - - 02/26/93 06/02-03/93 10.95 - - - NO ND ND ND NO 31 09/02-03/93 10.40 - - - - ND ND ND 1 ND NO 12/03-06/93 11.20 - - - - - ND 20 NO 1 ND 1 03/01-02/94 11.33 - - - - - ND ND NO 1 NO 0.9 06/01/94 10.65 - - - - NO NO ND NO ND NO 08/16-17/94 11.80 - - - - ND NO NO NO NO ND 11/21/94 11.33 - - - - - <50 <50 <0.5 0.8 0.5 <0.5 02/23/95 22.36 10.52 11.84 - - - - 120 <50 <0.5 <0.5 <0.5 <0.5 05/30/95 11.06 11.30 -0.54 - - - <50 <50 <0.5 <0.5 <0.5 <0.5 08/07/95 10.57 11.79 0.49 - - - 190' <50 <0.5 <0.5 <0.5 <0.5 11/02/95 10.82 11.54 -0.25 - - - <50 <50 <0.5 <0.5 <0.5 <0.5 02/01/96 10.65 11.71 0.17 - - - <50 <50 <0.5 <0.5 <0.5 <0.5 -- 05/01/96 10.48 11.88 0.17 - - <50 <50 <0.5 <0.5 <0.5 <0.5 <2.5 08/08/96 10.64 11.72 -0.16 - - - 420' <50 <0.5 <0.5 <0.5 <0.5 3.5 11104/96 11.06 11.30 -0.42 - - - 120' <60 <0.5 <0.5 <0.5 <0.5 <2.5 02/05/97 6.70 15.66 4.36 - -• - <50 <50 <0.5 <0.5 <0.5 <0.5 <2.5 05/12/97 9.80 12.56 -3.10 - - <50 <50 <0.5 <0.5 <0.5 <0.5 <5.0 14 of 33 Chevron\1001621\GWtablel stQt2003