ARCHIVED REPORTS_GROUNDWATER MONITORING AND REMEDIATION REPORT - 3RD AND 4TH QUARTERS 2011

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TABLE 3 Page 43 of 66 GROUNDWATER DATA SHELL STOCKTON TERMINAL 3515 NAVY DRIVE,STOCKTON,CALIFORNIA Depth to GW SPH MTBE MTBE DO Well ID Date (091L) (N�,) (Yg&) (V u (N�.) (PA) wgv (P2 60 TBA DIpE ETBE TAME I Methanol (PA) (PA) (�) (1191L)7L) (Ng�1-) Gt,�ol (�) (ft MSL) (ft TOC ) (R MSL)OC Water Elev. Thickness ss (mg/L) _ _ - - - - 9.07 11.35 -2.28 - - MW-23 05/21/2008 MW-23 08/28/2008 60 0 - - - - -0 160 <0.50 Q.0 <1.0 Q.0 - -5.2 -- - - -<2.0 <2.0 - - -- 9.07 11.75 -2.68 - 3.55 - - - Mw-23 11/06/2008 - - - - - - - _ - 9.07 11.81 - - l -2.74 - MW-23 02/09/2009 690 200 <0.50 Q.0 <1.0 Q.0 - 6.7 52 76 <2.0 <2.0 = - <10.0 gg 9.07 11.24 -217 - 0.37 MW-23 05/07/2009 - - - - - - - - - - - - 9.07 11.67 -2.60 9.07 10.75 -1.68 - 1.82 MW-23 08/31/2009 850 200 <0.50Q.0 Q.0 Q.0 - 5.2 - 0.41 r - - - 9.07 11.52 -2.45 - - MW-23 11/12/2009 - - - - - - - - - - _ - - 9.07 10.90 -1.83 - - MW-23 02/03/2010 7 - - - - - - - 62 - - - 9.07 10.50 -1.43 - 0.89 MW-23 02/10/2010 870 230 If c0.50 <1.0 <1.0 <1.0 - - - - <2.0 - - - - - - 9.07 9.59 -0.52 MW-23 05/06/2010 4 - 0. - - - - - - 34 - - 9.07 11.40 -2.33 - 0.77 MW-73 08/30/2010 540 360 <0.50 <1.0 <1.0 0.56r - 3.4 39 34 = <2.0 = - - - - MW-23 12/03/2010 - - - - - - - - - 9.07 11.10 -2.03 - <0.50 <050 <1.0 - 3.2 u 11 19 - <1.0 - - 9.07 10.35 -128 0.32 MW-23 02/18/2011 440 p - c0.50 - - - - - - 9.07 9.90 -0.83 - - MW-23 05/19/2011 - - - - - - _ - - - - - - 11.98 11.22 0.76 - - MW-23 09/07/2011 Unable to sample - - - - - - - - - - - 11.98 11.47 0.51 - - MW-23 12/06%2011 - - - - - - - - - - _ _ - 10.25 21.20 -10.95 - - MW-24 03/25/1993 - - - - - - - - - - - - - - 10.25 13.06 -2.81 - - MW-24 09/29/1993 - - - - - - - - - - _ _ - - - 10.25 12.89 -2.64 - - MW-24 03/24/1994 2,800 27,000 5,400 3,300 590 2,300 - - - - _ - - - 10.25 13.41 -3.16 - - MW-24 06/27/1994 4,300 d 27,000 5,700 3,300 620 2,600 - - - - _ _ - - 10.25 13.60 -3.35 - - MW-24 09/27/1994 2,000 20,000 4,700 1,700 410 1,200 - - - - - - - - 10.25 2232a -12.07a 0.57 - MW-24 12/28/1994 - - - - - - - - - - - - - - - 10.25 22.35a -12.10a 0.05 - MW-24 03/13/1995 - - - - - - - - - - - 10.25 24.85 -14.60 - - MW-24 06/15/1995 1,500 6,300 1,000 670 61 450 - - - - _ _ _ - - 10.25 24.65 -14.40 - - MW-24 09/12/1995 600 3,400 470 170 15 350 - - - - _ - - - 10.25 31.91 -21.66 - - MW-24 11/13/1995 2,300 6,100 110 230 60 580 - - - - - - - 10.25 10.18 21.6 - - MW-24 03/20/1996 1,400 29,000 5,200 6,100 360 3,800 - - - - - _ - - - 10.25 3018 -2007 0.01 - MW-24 05/15/1996 - - - - - - _ - - - 10.25 2..64 20.39 .0 - MW-24 08/12/1996 1,100 11,000 1,600 2,000 220 1,300 - - - - - - - - 10.25 14.74 12.8 - - MW-24 10/28/1996 3,100 8,900 1,400 1,500 170 1,000 - - - - - _ - - - 1025 2374 4.49 - - MW-24 03/03/1997 810 9,600 1,200 1,400 220 1,200 - - - - - _ - - 10.25 18.42 13.4 - - MW-24 05/05/1997 2,600 46,000 7,000 7,500 1,200 6,000 - - - - - - - - 10.25 31.04 --8.79 - - MW-24 08/18/1997 1,300 18,000 2,200 1,500 370 11100 - - - - - - - _ 1025 12.27 20.7 - - MW-24 11/18/1997 57,000 3,400 280 57 84 470 - - - - - - _ - - MW-24 03/24/1998 3,600 35,000 4,500 3,600 1,100 4,700 - - - - - - - 10.25 21.10 -- 10.25 13.17 -12.92 92 - - MW-24 06/02/1998 4,220 27,800 4,750 4,510 775 3,980 - - - - - _ - - 10.25 19.64 10-8 - - MW-24 09/02/1998 4,540 26,300 3,700 3,%0 713 3,070 - - - - - - - 10.25 - - - - MW-24(D) 09/04/1998 1,320 19,000 2,690 2,730 508 2,190 - - - - _ - - - MW-24 11/09/1998 3,540 1,170 101 13.8 25A 142 - - - - 6 - - - - - - - 10.25 11.92 -1- 10.25 21.61 -11.3.3 - - MW-24 03/29/1999 Well inaccessible - - - - - - - - - - - - 10.25 11.23 -0.98 - - MW-24 06/15/1999 10,300 33,600 6,700 720 1,090 4,720 1,390 - - - - - - - _ 10.25 11.07 -0.82 - - MW-24 09/14/1999 9,870 21,200 3,600 640 980 3,660 375 - - - - - - - - 10.25 - - - - MW-24 12/20/1999 Well inaaessible - - - - - - - - - - 1025 10.57 -0.32 - - MW-24 02/24/2000 1,100 268 6.10 5.70 0.899 43.1 88.7 - - - - - - av mrzs CW