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TABLE 1 Page 7 of 9 GROUNDWATER DATA FORMER SHELL CENTRAL VALLEY CRUDE OIL PIPELINES CORDESRANCH TRACY,CALIFORNIA Ground Depth to Depth to Depth to m&p- o- Xylenes Well ID Sample Date TOC Surface Water Water GWElev SPH Thickness TPHc Benzene Toluene Ethylbenzene Xylenes Xylene (total/ TDS ft MSL ft MSL ft TOC ft bgs ft MSL feet feet ({y/L) µg/L µ91L µ91L µg/L µg/L µg/L mg/L MW-13C 8/25/2011 123.71 120.64 58.14 55.07 65.57 - - - - - MW-13C 9/8/2011 123.71 120.64 58.02 54.95 65.69 - - <0.50 <0.50 <0.50 - - <1.0 - MW-13C 11/30/2011 123.71 120.64 57.31 54.24 66.40 - - <0.50 <0.50 <0.50 - - <0.50 - MW-13C 3/22/2012 123.71 120.64 56.14 53.07 67.57 - - <0.50 <0.50 <0.50 - - <1.0 - MW-13C 6/28/2012 123.71 120.64 56.55 53AS 67.16 - - <0.50 <0.50 <0.50 - - <3.0 - • MW-13Cf 9/18/2012 123.71 120.64 58.00 54.93 65.71 - - <0.50 <1.0 <1.0 - - <1.0 - MW-13C g 9/18/2012 - - - - - - - _ _ MW-13C 1/11/2013 123.71 120.64 56.35 53.28 67.36 - - <0.50 <1.0 <1.0 - <1.0 MW-13C 3/5/2013 123.71 120.64 55.90 52.83 67.81 - - - - MW-13C 4/25/2013 123.71 120.64 59.79 56.72 63.92 - - <0.50 <1.0 <1.0 - - <1.0 - MW-13C 7/15/2013 123.71 120.64 57.63 54.56 66.08 - - <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 - MW-13C 10/30/2013 123.71 120.64 58.28 55.21 55.43 - - <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 - MW-13C 1/23/2014 123.71 120.64 57.49 54.42 66.22 - - <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 - MW-14B 8/25/2011 120.66 117.42 36.82 33.58 83.84 - - - - - MW-14B 9/8/2011 120.66 117.42 34.42 31.18 86.24 - - <0.50 <0.50 <0.50 - - <1.0 - MW-14B 11/30/2011 120.66 117.42 33.33 30.09 87.33 - - <0.50 <0.50 <0.50 - - <0.50 - MW-14B 3/22/2012 120.66 117.42 35.34 32.10 85.32 - - 1.4 <0.50 <0.50 - - <1.0 - MW-14B 6/28/2012 120.66 117.42 33.55 30.31 87.11 - - <0.50 <0.50 <0.50 - - <1.0 - MW-14Bf 9/18/2012 120.66 117.42 32.36 29.12 88.30 - - <0.50 <1D <1.0 - - <1.0 - MW-1469 9/18/2012 - - - - - - - - - - - - MW-14B 1/11/2013 120.66 117.42 33.50 30.26 87.16 - - <0.50 <1.0 <1.0 - - <1.0 MW-14B 3/5/2013 120.66 117.42 34.48 31.24 86.18 - - - - - MW-14B 4/25/2013 120.66 117.42 34.89 31.65 85.77 - - <0.50 <1.0 <1.0 - - <1.0 = MW-148 7/15/2013 120.66 117.42 33.82 30.58 86.84 - - <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 • MW-14B 10/30/2013 120.66 117.42 27.87 24.63 92.79 - - <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 - MW-14B 1/23/2014 120.66 117.42 34.03 30.79 86.63 - - <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 - MW-14C 8/25/2011 120.64 117.43 40.16 36.95 80.48 - - - - MW-14C 9/8/2011 120.64 117.43 56.52 53.31 64.12 - - <0.50 <0.50 <0.50 - - <1.0 - MW-14C 11/30/2011 120.64 117.43 55.81 52.60 64.83 - - <0.50 <0.50 <0.50 - - <0.50 - MW-14C 3/22/2012 120.64 117.43 54.58 51.37 66.06 - - <0.50 <0.50 <0.50 - - <0.50 - MW-14C 6/28/2012 120.64 117.43 54.96 51.75 65.68 - - <0.50 <0.50 <0.50 - - <0.50 MW-14Cf 9/18/2012 120.64 117.43 56.52 53.31 64.12 - - <0.50 <1.0 <1.0 - - <1.0 - MW-14C9 9/18/2012 - - - - - - - - - - - - MW-14C 1/11/2013 120.64 117.43 55.00 51.79 65.64 - - <0.50 <1.0 <1.0 - - <1.0 MW-14C 3/5/2013 120.64 117.43 54.24 51.03 66.40 - - - - - - MW-14C 4/25/2013 120.64 117.43 54.20 50.99 66.44 - - <0.50 <1.0 <1.0 - - <3.0 MW-14C 7/15/2013 120.64 117.43 56.19 52.98 64.45 - - <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 - MW-14C 10/30/2013 120.64 117.43 56.95 53.74 63.69 - - <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 - QW6D2B(31)