ARCHIVED REPORTS_GROUNDWATER MONITORING REPORT - THIRD QUARTER 2014

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TABLE 1 Page 1 of 10 GROUNDWATER DATA FORMER SHELL CENTRAL VALLEY CRUDE OIL PIPELINES CORDESRANCH TRACY,CALIFORNIA Ground Depth to Depth to Depth to m&p- a- Xylenes Weil ID Sample Date TOC Surface Water Water GW Elev SPH Thickness TPHc TPHd Benzene Toluene Ethylbenzene Xylenes Xylene (total) TDS ft MSL ft MSL ft TOC ft 69s ft MSL feet feet (p9/L/ P9/L P9/L P9/L P9A P9/L µgA P9/L m9/L MW-1 8/23/2010 127.28 124.56 40.35 37.63 86.93 - - 1250 <50 <0.50 <1.0 <1.0 <1.0 <1.0 - - MW-1 12/8/2010 127.28 124.56 40.45 37.73 86.83 - - <250 <50 <0.50 <1.0 <1.0 - - <1.0 1,530 MW-1 6/27/2011 127.28 124.56 40.96 38.24 86.32 - - <240 <48b <0.50 <0.50 <0.50 - - <1.0 - MW-1 9/8/2011 127.28 124.56 40.02 37.30 87.26 - - 1480 195 b 10.50 <0.50 <0.50 - - <1.0 - MW-1 11/30/2011 127.28 124.56 39.18 36.46 88.10 - - - 147.6 b <0.50 <0.50 <0.50 - - <0.50 - MW-1 3/22/2012 127.28 124.56 41.37 38.65 85.91 - - 1240 - <0.50 <0.50 <0.50 - - <1.0 - MW-1 6/28/2012 127.28 124.56 40.05 37.33 87.23 - - <240/<240b - <0.50 <0.50 <0.50 - - <1.0 - M W-1 f 9/18/2012 127.28 124.56 39.16 36.44 88.12 - - <250/<250 b - <0.50 <1.0 <1.0 - - <1.0 - MW-1 g 9/18/2012 - - - - - - - 450/<240b,e - - - - - - - - MW-1 1/11/2013 127.28 124.56 39.80 37.08 87.48 - - <250/<250 b - <0.50 <1.0 <1.0 - - <1.0 - MW-1 4/25/2013 127.28 124.56 41.05 38.33 86.23 - - <250/<250 b - <0.50 <1.0 <1.0 - - <1.0 - MW-1 7/15/2013 127.28 124.56 39.95 37.23 87.33 - - <250/<250b - <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 - MW-1 10/30/2013 127.28 124.56 39.00 36.28 88.28 - - <250/<250 b - <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 - MW-1 1/23/2014 127.28 124.56 40.01 37.29 67.27 - - <250/<250 b - <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 - MW-1 4/15/2014 127.28 124.56 40.89 38.17 86.39 - - <250/<250b - <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 - MW-2 8/23/2010 123.60 121.29 36.21 33.90 87.39 - - 23,000 13,000 89 <1.0 1.4 <1.0 <1.0 - - MW-2 12/8/2010 123.60 121.29 36.03 33.72 87.57 - - 11,000 6,800 190 <1.0 2.6 - - <1.0 1,550 MW-2 6/27/2011 123.60 121.29 37.10 34.79 86.52 37.D8 0.02 - - - - - - - - - MW-2 9/8/2011 123.60 121.29 35.98 33.67 87.62 - - 8,400 3,500 b 290 <2.0 3.0 - - <4.0 - MW-2 11/30/2011 123.60 121.29 35.70 33.39 87.90 - - - 13,700 b 377 <0.50 5.15 - - <0.50 - MW-2 3/22/2012 123.60 121.29 37.38 35.07 86.22 - - 13,000 - 150 <2.0 2.4 - - <4.0 - MW-2 6/28/2012 123.60 121.29 36.11 33.80 87.49 - - 13,000/9,800 b - 140 <1.0 2.0 - - <2.0 - MW-2f 9/18/2012 123.60 121.29 35.00 32.69 88.60 - - 4,000/3,000 b - 240 <2.0 <2.0 - - <2.0 - MW-2 g 9/18/2012 - - - - - - - 18,000/8,500 b,e - - - - - - - - MW-2 1/11/2013 123.60 121.29 35.74 33.43 87.86 - - 4,100/2,700 b - 270 <2.0 3.4 - - <2.0 - MW-2 3/5/2013 123.60 121.29 36.42 34.11 87.18 - - - - - - - - MW-2 4/25/2013 123.60 121.29 36.85 34.54 86.75 - - 5,800/4,400 b - 360 <2.0 2.5 - - <2.0 - MW-2 7/15/2013 123.60 121.29 36.31 34.00 87.29 - - 9,300/5,500 b,k - 320 <2.0 2.2 <2.0 <2.0 <2.0 - MW-2 10/30/2013 123.60 121.29 35.01 32.70 88.59 - - 7,800/6,300 b - 300 <2.0 2.7 <2.0 <2.0 <2.0 - MW-2 1/23/2014 123.60 121.29 36.10 33.79 87.50 - - 9,000/6,3006 - 130 <1.0 <1.0 <1.0 <1.0 <1.0 - MW-2 4/15/2014 123.60 121.29 37.08 34.77 86.52 - - 3,400/2,600 b - 88 <1.0 <1.0 <1.0 <1.0 <1.0 - MW-3 8/23/2010 123.70 121.07 36.38 33.75 87.32 - - <250 <50 <0.50 Q.0 <1.0 <1.0 <1.0 - - MW-3 12/8/2010 123.70 121.07 36.10 33.47 87.60 - - <250 <50 <0.50 <1.0 <1.0 - - <1.0 1,290 MW-3 6/27/2011 123.70 121.07 37.34 34.71 86.36 - - <240 540b <0.50 <0.50 <0.50 - - <1.0 - MW-3 9/8/2011 123.70 121.07 36.36 33.73 87.34 - - <480 <95 b <0.50 <0.50 10.50 - - <1.0 - MW-3 11/30/2011 123.70 121.07 35.85 33.22 87.85 - - - <47.6b <0.50 <0.50 <0.50 - - <0.50 - CRl, 223 1371