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 Thickness Removed Removed Diesel Gasoline Benzene Toluene Benzene Xylenes MtBE EPA 8260B Number Gauged (feet MSL) (feet,TOC) (feet,MSL) Change(ft.) feet allons (gallons) (V/L) (N/L) (v/L) (V/L) (N/L) (NIL) (u/L) (N/L) MW-14 08/21/00 3.25 14.18 0.20 0.00 0.00 0.27 150,000 18,000 <50 <50 <50 <50 <50 (cont.) 11/30/00 Well Inaccessible 03/06/01 Well Inaccessible 04/23/01 5.25 12.18 -2.00 0.00 0.00 0.27 Well Not Sampled(product present) 08/08/01 18.01 4.00 14.01 1.83 0.00 0.00 0.27 Well Not Sampled(product present) 11/20/01 18.01 5.46 12.55 -1.46 0.01 0.05 0.32 Well Not Sampled(product present) 02/21/02 18.01 4.37 13.64 1.09 0.00 0.00 0.32 Well Not Sampled(product present) 05/13/02 18.01 5.16 12.85 -0.79 0.02 0.00 0.32 Well Not Sampled(product present) 07/10/02 _-'----------------•---------'--- MW-15A 09/02-03/93 -- 3.32 - - 4,300 ND 24 ND ND 1.0 (MW-15) 12/03-06/93 -- 4.75 -- - -_ _ _ 810 60 4.0 ND ND ND -- -- 03/01-02194 -- -'06/01/94 -- -'06/01/94 11.87 0.08 08/16-17/94 -- 10.70 - 0.77 -- - -• -- -- -- -- -- --11/21/94 -- 7.18 -- -- 0.44 -- - '- - -- -- -- -- -- -- O2Y23/95 17.17 12.21 4.96 - -- - 440,000 660,000 1,200 2,700 2,100 9,200 05/30/95 10.10 7.07 2.11 -• 1,900 630 9 0.5 0.8 1.9 08/07/95 17.04 0.13 -6.94 - - 42,000 <5000 270 <50 <50 <50 11/02/95 13.54 3.63 3.50 - - 02/01/96 2.64 14.53 10.90 - - 60,000 5,900 920 180 48 380 05/01/96 5.12 12.05 -2.48 - - 3,400 14,000 1,700 <50 <50 140 45,000 05/01/96 5.12 12.05 0.00 - -- - -- - -- -- -- -- 36,000 -- 08/08/96 4.52 12.65 0.60 - - 5,500 <1,250 40 <12 <12 <12 6,100 11/04/96 4.93 12.24 -0.41 0.02 0.13 0.13 - -- -- -- -- 02/05/97 0.00 17.17 4.93 - -- - 9,500 230' 20 <0.5 1.2 1.1 230 05/12/97 2.97 14.20 -2.97 7,000 170 6.5 <0.5 <0.5 <0.5 430 08/13/97 3.75 13.42 -0.78 - - 12,000 400 1.9 <0.5 0.54 <0.5 130 11/04/97 5.03 12.14 -1.28 - - - 4,000 62 <0.5 <0.5 <0.5 <0.5 140 02/09/98 0.00 17.17 5.03 - - - 65,000 23,000 <0.5 <0.5 <0.5 <0.5 <5.0 05/26/98 1.75 15.42 -1.75 - - - 1,180' 213 625 <0.5 <0.5 0.65 53.5 08/24/98 3.04 14.13 -1.29 - 7,580/5,220' 193 1.51 <0.5 <0.5 <0.5 80.4/110' 11/19/98 3.70 13.47 -0.66 893 1,280 <0.50 <0.50 <0.50 <0.50 46.3/44.8' 02/02/99 0.78 16.39 2.92 - 1,370' 1,020 3.77 <2.50 <2.50 <2.50 41.7/29.4° 06/14/99 4.19 12.98 -3.41 - 570 159 <0.50 <0.50 <0.50 <0.50 54.9!70.2' 09/01/99 2.31 14.86 1.88 -- 754 84 <0.5 <0.5 <0.5 <0.5 124 11/30/99 4.65 12.52 -2.34 - 2,330' 139 1.06 0.65 1.92 1.15 208/299' 02/28/00 0.78 16.39 3.87 - - 710 445 2.05 0.50 3.00 2.2 <10.0 06/27/00 2.83 14.34 -2.05 0.00 0.00 0.13 12,000 140 <1.0 0.0 <1.0 <1.0 -- 400 08/21/00 2.78 14.39 0.05 0.00 0.00 0.13 22,000 1,200 <0.50 <0.50 <0.50 0.63 -- 47 11/30/00 4.56 12.61 -1.78 0.02 2.00 2.13 Well Not Sampled(product present) 03/06/01 4.65 12.52 -0.09 0.00 0.00 2.13 2,000 <0.50 1.1 2.6 <0.50 0.68 62 -- 04/23/01 4.76 12.41 -0.11 0.00 0.00 2.13 1,400 <50 <0.50 0.62 <0.50 <0.50 -- 280 17 of 33 Chevron\1001621\G W tab lel stQtr2003