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

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TABLE 3 Page 17 of 66 GROUNDWATER DATA SHELL STOCKTON TERMINAL 3515 NAVY DRIVE,STOCKTON,CALIFORNIA MTBE MTBE Depth to GW SPH Well ID Date TPHd TPHS B T ,E./ X 8020 8260 TBA DIPE ELBE TAME Ethanal Methanol Lead TOC Water Elev. Thickness DO W) W) (481.) W) (Y91L) (Pga) (481L) (p82) (P91L) (481L) (p82) (A91L) (082) (pg/L) (mg/L) (1MSL) (ft TOC) (ft MSL) (ft) (mg/L) MW-9 11/29/2004 - - - - - - - - - - - - - - - 11.30 12.98 -1.68 - 02 MW-9 02/17/2005 62 <50 <0.50 <0.50 <0.50 <0.50 - 0.87 - - - - - - - 11.30 11.45 -0.15 - 1.8 MW-9 05/12/2005 - - - - - - - - - - - - - - - 11.30 11.00 0.30 - - MW-9 08/30/2005 52 <50 <0.50 <0.50 <0.50 <0.50 - 1.0 - - - - - 11.30 12.19 -0.89 - 1.6 MW-9 11/30/2005 - - - - - - - - - - - - - - - 1122 12.60 -1.38 - - MW-9 02/02/2006 - - - - - - - - - - - - - - - 11.22 11.00 0.22 - - MW-9 05/30/2006 - - - - - - - - - - - - 11.22 10.09 1.13 - - MW-9 08/31/2006 66 <50 <050 <030 <0.50 <0.50 - 34 - - - - - - - 11.22 11.51 -0.29 - 1.9 MW-9 11/16/2006 - - - - - - - - - - - - - 11.22 12.15 -0.93 - 1.9 MW-9 02/26/2007 - - - - - - - - - - - - 11.22 12.02 -0.80 MW-9 05/29/2007 - - - - - - - - - - - - - - - 11.22 12.40 -1.18 - - MW-9 08/27/2007 430 d,bb <50 ee <0.50 <1.0 <1.0 <.0 - 0.46 r - - - - - - - 11.22 16.60 -5.38 - 0.30 MW-9 11/29/2007 - - - - - - - - - 11.22 12.79 -1.57 - - MW-9 02/22/2008 - - - - - - - - - 11.22 10.96 0.26 MW-9 05/21/2008 - - - - - - - - - - - 11.22 12.10 -0.88 - - MW-9 08/28/2008 <0 37r <0.50 <1.0 <.0 <1.0 - 1.1 - - - - - 11.22 1237 -1.15 - 0.9 MW-9 11/06/2008 - - - - - - - - - - - 11.22 1253 -1.31 - - MW-9 02/09/2009 - - - - - - - - - - - - 11.22 1210 -0.88 - - MW-9 05/07/2009 - - - - - - - - - - 11.22 11.74 -0.52 - - MW-9 08/31/2009 <50 <50 <050 <.0 <1.0 <1.0 - 1.2 <0 - - - - - - 11.22 1233 -1.11 - 265 MW-9 11/12/2009 - - - - - - - - - - - - - 11.22 12.41 -1.19 - - MW-9 02/03/2010 - - - - - - - - - - - - - - - 11.22 11.42 -0.20 - - MW-9 05/06/2010 - - - - - - - - - - - - - 11.22 11.00 0.22 - - MW-9 08/30/2010 - - - - - - - - - - - - _ 11.22 1202 -0.80 - - MW-9 08/31/2010 57d 90 If <0.50 <1.0 <1.0 <1.0 - 1.2 - - - - - - - 11.22 - - - 0.66 MW-9 12/03/2010 - - - - - - - - - - - - - - - 11.22 12.10 -0.88 - - MW-9 02/18/2011 - - - - - - - - - - - - 11.22 11.22 0.00 - - MW-9 05/19/2011 - - - - - - - - - - - - - 11.22 10.69 0.53 MW-9 09/07/1011 <50 <50 <0.50 <1.0 <1.0 <1.0 - 26 - - - - - - - 14.15 11.98 217 - 1.50 MW-9 17/06/2011 - - - - - - - - - - - - - - - 14.15 1224 1.91 - - MW-10 08/08/1991 - - - - - - - - - - - 10.82 13.70a -2.88a 0.03 - MW-10 02/27/1992 - - - - - - - - - - - - 10.82 12.11 -1.29 Sheen - MW-10 08/13/1992 - - - - - - - - - - - - - - - 10.82 12.99a -2.17a 0.55 - MW-10 03/25/1993 - - - - - - - 10.82 10.37a 0.45a - - MW-10 09/29/1993 - - - - - - - - - - - 10.82 12.41a -1.59a - - MW-10 03/24/1994 - - - - - - - - - - - 10.82 1116a -2.34a - - MW-10 06/27/1994 - - - - - - - - - - 1(Y82 12.90a -108a 0.66 - MW-10 09/27/1994 - - - - - - - 10.82 13.53a -2.71a 0.60 - MW-10 12/28/1994 - - - - - - - - - - - 10.82 14.42a -3.60a 0.10 - MW-10 03/13/1995 - - - - - - - - - - - - - - - 10.82 12.00a -1.18a 0.58 - MW-10 06/15/1995 - - - - - - - - - - - 10.82 1226a -1.44a 0.67 - MW-10 09/12/1995 - - - - - - - - - - - - - - - 10.82 13.70a -2.88a 0.80 - MW-10 11/13/1995 - - - - - - - - - - - - 10.82 14.38a -3.56a 0.80 - MW-10 03/20/1996 33,000 170,000 16,000 220 2,600 1,600 - - - - - - - 10.82 9.66a 1.16a - - cx ."am)