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

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TABLE 3 Page 27 of 66 GROUNDWATER DATA SHELL STOCKTON TERMINAL 3515 NAVY DRIVE,STOCKTON,CALIFORNIA MTBE MTBE Depth to GW SPH Wellen Date TPHd TPHg B T E X 8020 8260 TBA DIPE ETBE TAME Ethanol Methanol Lead TOC Water Elea. Thickness ADO (Pg/L) (Pg/L) (Pg/L) (P91L) (PO) (Pg/L) 6LIVI) (PO) (Pg/L) (Pg/L) (PSIL) (Pg/L) (.0) (Vf/L) (mg/L) (ft MSL) (ft TOC) ((t MSL) (ft) (mg/L) MW-14 02/18/2011 750 190 7.9 0.97 <0.50 1.3 - <1.0 <10 7.2 - - - - - 11.61 12.21 -0.60 - 1.80 MW-14 05/19/2011 - - - - - - - - - - - - - - - 11.61 11.78 -0.17 - - MW-14 09/07/2011 - - - - - - - - - - - - - 14.54 13.12 1.42 MW-14 09/08/2011 1,300 190 1.7 0.40 r <0.50 Q.0 - Q.0 QO 18 - - - - - 14.54 - - - 1.14 MW-14 12/06/2011 - - - - - - - - - - - - - - - 14.54 13.75 0.79 - - MW-15 08/08/1991 - - - - - - - - - - - - - 10.73 14.17a -3.44a 0.01 - MW-15 02/27/1992 - - - - - - - - - - - - - - - 10.73 1256a -1.83a 0.01 MW-15 08/13/1992 - - - - - - - - - - - - - - - 10.73 1409. -3.36. 0.01 - MW-15 03/25/1993 - - - - - - - - - - - - - - - 10.73 11.82 -1.09 - - MW-15 09/29/1993 - - - - - - - - - - - - - - - 10.73 13.63a -2.90a - _ MW-15 03/24/1994 - - - - - - - - - - - - - - - 10.73 12.72 -1.99 0.01 MW-15 06/27/1994 - - - - - - - - - - - - - - - 10.73 13.27 -2.546 0.13 -MW-15 09/27/1994 - - - - - - - - - - - - - - - 10.73 13.85a -3.12a 0.03 - MW-15 12/28/1994 - - - - - - - - - - - - - - - 10.73 14.12a -3.39a 0.43 - MW-15 03/13/1995 - - - - - - - - - - - - - - - 10.73 12.46a -1.73a 0.01 - MW-15 06/15/1995 240,000 6,500 270 48 41 44 - - - - - - - - - 10.73 13.78a -3.05a - MW-15 09/12/1995 - - - - - - - - - - - - - - - 10.73 14Ala -3.68a 0.01 - MW-15 11/13/1995 - - - - - - - - - - - - - - - 10.73 15.68a 4.95a 0.02 - MW-15 03/20/1996 3,900 830 34 1.4 4.6 6.8 - - - - - - - - - 10.73 10.37 0.36 - - MW-15 05/15/1996 11,000 ND ND ND .ND ND - - - - - - - - - 10.73 12.05 -1.32 - _ MW-15 08/12/1996 66,000 85,000 57 ND 99 170 - - - - - - - - - 10.73 13.18 -2.45 - MW-15 10/28/1996 7,400 W'000 ND ND ND ND - - - - - - - - - 10.73 14.25 -3.52 - -MW-15 03/03/1997 17,000 10,000 180 25 33 30 - - - - - - - - - 10.73 11.05 -0.32 - - MW-15 05/05/1997 5,800 2,200 82 4.4 6.4 2.4 - - - - - - - - - 10.73 12.25 -1.52 - - MW-15 08/18/1997 43,000 1,300 37 6.5 3.7 2.6 - - - - - - - 10.73 13.92 -3.19 - _ MW-15(D) 08/18/1997 17,000 1,700 50 9.1 <0.50 <030 - - - - - - - - - 10.73 - - - MW-15 11/18/1997 17,000 20,000 210 <0.50 <0.50 <0.50 - - - - - - - - - 10.73 13.19 -2.46 - - MW-15 03/24/1998 16,000 11,000 370 17 51 37 - - - - - - - - - 10.73 8.51 2.22 - - MW-15 06/02/1998 9,720 151,000 831 <250 <250 <250 - - - - - - - - - 10.73 10.37 0.36 - - MW-15 09/02/1998 8,770 59,600 698 <50 <50 <50 - - - - - - - 10.73 12.27 -1.54 - - MW-15 11/09/1998 14,900 296,000 876 361 690 454 - - - - - - - 10.73 12.99 -226 - - MW-15 03/29/1999 48,000 d 22,000 79 <0.50 <0.50 <0.50 - - - - - - - - - 10.73 11.63 -0.90 - 1.3 MW-15 06/15/1999 7,250 2,880 349 21.1 14.7 13.0 25.2 - - - - - - - - 10.73 11.91 -1.18 - - MW-15(D) 06/15/1999 6,800 3,020 306 13A 11.8 13.4 62.4 - - - - - - - - 10.73 - - MW-15 09/14/1999 6,680 13,300 1,240 85.0 <25.0 110 405 - - - - - - - - 10.73 11.67 -0.94 - - MW-15 12/20/1999 64,600 21,200 277 144 38.8 111 <125 - - - - - - - - 10.73 14.97 14.24 - - MW-15 02/24/2000 68,000 7,230 345 21.7 14.0 23.1 73.0 - - - - - - - - 10.73 12.12 -1.39 - - MW-15 04/27/2000 35,100 115,000 841 220 159 102 512 - - - - - - - - 10.73 11.41 -0.68 - - MW-15 08/10/2000 22.100 8,480 701 15.0 23.8 28.6 44.5 - - - - - - - - 10.73 13.03 -2.30 - - MW-15 11/02/2000 21,100 4,100 310 X5.00 <5.00 G5.00 <25.0 - - - - - - - - 10.73 13.31 -2.58 - - MW-15(D) 11/02/2000 5,580 3,510 343 16.9 5.86 18.6 51.9 - - - - - - - - 10.73 - - - - MW-15 01/25/2001 15,600 38,100 394 60.0 <50.0 <50.0 <250 - - - - - - - - 10.73 13.33 -2.60 - - MW-15(D) 01/25/2001 a 7,580 141 11.0 8.65 17.1 60.5 - - - - - - - - 10.73 - - - - MW-15 05/31/2001 <290,000 19,000 56 4.4 15 12 - 8.6 77 16 <2.0 <2.0 60 <200 - 10.75 12.35 -1.60 - - cxwuimaa