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 Thickness Removed Removed Diesel Gasoline Benzene Toluene Benzene Xylenes MtBE EPA 82608 Number Gauged (feet MSL) (feet TOC) (feet MSL) Change(ft) (feet) (gallons) (gallons) (NIL) (k/-) (p/L) (IJ/L) (U/L) (PIL) (v/L) (NIL) MW-9 06/27/00 - --unable to locate- --------------------------------------- (Cont.) 08/21/00 ------------unable to locate- .._.._...____---------------------------- 11/30/00 ------- unable to locate--.-------------------------------------------- 03/06/01 ---------unable to locate-------•••--------------------------------- 04/23/01 - -- -unable to locate------------------------------------------ 08/08/01 --unable unable to locate ---------------------------------------- 11/20/01 » unable to locate----»-»-•------------------------------------- 02/22/02 -- - - ----unable to locate- -•------------------------------- 05/13/02 """ ----------------- -unable to locate ._._--.-.----------------------------------- 08/27/02 - --unable to locate -- ------------------------------ 12/04/02 -unable to locate-------- ---------------------------- 03/05/03 unable to I MW-10 10/13/88 - - - - - » NO NO ND ND NO NO 02/22/89 19.59 7.91 11.68 - - - - » 04/14/89 6.32 13.27 1.59 - - - - 10/06/89 4.86 14.73 1.46 - - - NO NO NO NO ND NO 01/17/90 7.79 11.80 -2.93 - - - NO ND NO ND ND ND 04/16/90 6.92 12.67 0.87 - - - NO NO ND ND NO NO 07/18/90 - - - - NO NO ND ND ND ND 10/17/90 - - - - NO NO ND NO NO ND 01/14/91 - - - - - ND ND NO ND ND NO 04/04/91 7.81 11.78 - - - 04/10/91 - - - - - - 60 NO NO NO NO NO 07/10/91 4.01 15.58 -- - - - 130 NO ND NO ND ND 06/01/91 4.95 14.64 -0.94 - » - ND ND ND ND NO NO 08/12/92 5.34 14.25 -0.39 - - NO ND ND ND ND NO 11/02/92 6.80 12.79 -1.46 - - - NO NO ND ND NO ND 02/26/93 3.44 16.15 3.36 - - NO ND NO ND ND NO 06/02-03/93 5.58 14.01 -2.14 - - NO NO NO NO NO ND 09/02-03/93 4.47 15.12 1.11 - - - NO NO NO ND ND NO 12/03-06/93 6.93 12.66 -2.46 - -- - NO NO NO NO ND ND 03/01-02/94 7.04 12.55 -0.11 - - - NO NO NO ND NO ND 06/01/94 5.94 13.65 1.10 - - - NO NO NO NO ND NO 08/16-17/94 5.18 14.41 0.76 - - - NO NO ND NO NO NO 11/21/94 7.13 12.46 -1.95 - - - <50 <50 <0.5 0.7 <0.5 1.4 02/23/95 5.72 13.87 1.41 - - 75 <50 <0.5 <0.5 <0.5 <0.5 05/30/95 4.28 15.31 1.44 - - - <50 <50 <0.5 <0.5 <0.5 <0.5 08/07/95 4.21 15.38 0.07 - - 59' <50 <0.5 <0.5 <0.5 <0.5 11/02195 6.20 13.39 -1.99 - - 54' 66 32 1.3 2.5 6.4 02101196 4.42 15.17 1.78 - - - <50 <50 <0.5 <0.5 <0.5 <0.5 -- 05/01/96 5.55 14.04 -1.13 - - - <50 <50 <0.5 <0.5 <0.5 <0.5 <2.5 08/08/96 5.53 14.06 0.02 - - 61' <50 <0.5 <0.5 <0.5 <0.5 <2.5 11104/96 6.65 12.94 -1.12 - - - <50 <50 <0.5 <0.5 <0.5 <0.5 <2.5 02/05/97 1.84 17.75 4.81 - - - <50 <50 <0.5 <0.5 <0.5 <0.5 <2.5 05/12/97 4.17 15.42 -2.33 - - - <50 <50 <0.5 <0.5 <0.5 <0.5 5.4 08/13/97 5.96 13.63 -1.79 - - <50 <50 <0.5 <0.5 <0.5 <0.5 <5.0 11/04/11 6.80 12.79 -0.84 - » - <50 <50 <0.5 <0.5 <0.5 <0.5 <5.0 02/09/98 0.28 19.31 6.52 - - <50 <50 <0.5 <0.5 <0.5 <0.5 <5.0 12 of 33 Chevron\1001621\GWtablel stQtr2003