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TABLE 1 Page 3 of 9 GROUNDWATER DATA FORMER SHELL CENTRAL VALLEY CRUDE OIL PIPELINES CORDESRANCH TRACY,CALIFORNIA Ground Depth to Depth to Depth to m&p- a- Xylenes Well ID Sample Date TOC Surface Water Water GW EIev SPH Thickness TPHc Benzene Toluene Ethylbenzene Xylenes Xylene (total) TDS ft MSL ft MSL ft TOC ft b9s ft MSL feet feet (µ9/L) µ9/L p9/L µ9/L p9/L µ91L p9/L m9/L MW-5A 7/15/2013 123.34 120.89 35.96 33.51 87.40 35.94 - - - - - - MW-5A 8/15/2013 123.34 120.89 35.46 33.01 87.90 35.40 - - - - - - MW-5A 9/30/2013 123.34 120.89 34.84 32.39 88.50 - - - - - - - - MW-5A 10/30/2013 123.34 120.89 34.76 32.31 88.64 34.68 - - - - - - MW-5A 11/26/2013 123.34 120.89 35.30 32.85 88.06 35.27 - - - - - - - • MW-5A 12/17/2013 123.34 120.89 35.22 32.77 88.14 35.20 - - - - - - - MW-SA 1/23/2014 123.34 120.89 35.88 33.43 87.51 35.82 - - - - - - - MW-5A 2/18/2014 123.34 120.89 36.30 33.85 87.10 36.23 - - - - - - - MW-5A 3/21/2014 123.34 120.89 37.06 34.61 86.40 36.91 - - - - - - - MW-58 9/16/2010 123.44 120.92 35.68 33.16 87.76 - - <0.50 <1.0 <1.0 <1.0 <1.0 - 2,180 MW-58 12/10/2010 123.44 120.92 35.83 33.31 87.61 - - <0.50 <1.0 <1.0 - - <1.0 2,940 MW-5B 6/27/2011 123.44 120.92 37.32 34.80 86.12 - - <0.50 <0.50 <0.50 - - <1.0 - MW-5B 9/8/2011 123.44 120.92 35.95 33.43 87.49 - - <0.50 <0.50 <0.50 - - <1.0 - MW-5B 11/30/2011 123.44 120.92 35.60 33.08 87.84 - - <0.50 <0.50 <0.50 - - <0.50 - MW-5B 3/22/2012 123.44 120.92 37.30 34.78 86.14 - - <0.50 <0.50 <0.50 - - <1.0 - MW-5B 6/27/2012 123.44 120.92 36.10 33.58 87.34 - - <0.50 <0.50 <0.50 - - <1.0 - MW-58f 9/18/2012 123.44 120.92 34.86 32.34 88.58 - - <0.50 <1.0 <1.0 - - <3.0 - MW-5Bg 9/18/2012 - - - - - - - - - - - - - - MW-5B 1/11/2013 123.44 120.92 35.63 33.11 87.81 - - <0.50 <1.0 <1.0 - - <1.0 - MW-5B 3/15/2013 123.44 120.92 36.38 33.86 87.06 - - - - - - - - - MW-SB 4/25/2013 123.44 120.92 36.94 34.42 86.50 - - <0.50 <1.0 <1.0 - - <1.0 - MW-58 7/15/2013 123.44 120.92 36.21 33.69 87.23 - - <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 - MW-5B 10/30/2013 123.44 120.92 34.97 32.45 88.47 - - <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 - MW-5B 1/23/2014 123.44 120.92 36.05 33.53 87.39 - - <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 - • MW-5C 9/16/2010 123.44 120.86 60.14 57.56 63.30 - - <0.50 <1.0 <1.0 <1.0 <1.0 - 1,850 MW-SC 12/10/2010 123.44 120.86 59.13 56.55 64.31 - - <0.50 <1.0 <1.0 - - <1.0 2,060 MW-5C 6/27/2011 123.44 120.86 57.41 54.83 66.03 - - <0.50 <0.50 <0.50 - - <1.0 - MW-5C 9/8/2011 123.44 120.86 58.35 55.77 65.09 - - <0.50 <0.50 <0.50 - - <1.0 - MW-5C 11/30/2011 123.44 120.86 57.70 55.12 65.74 - - <0.50 <0.50 <0.50 - - <0.50 - MW-5C 3/22/2012 123.44 120.86 56.57 53.99 66.87 - - <0.50 <0.50 <0.50 - - <1.0 - MW-SC 6/27/2012 123.44 120.86 56.94 54.36 66.50 - - <0.50 <0.50 <0.50 - - <1.0 - MW-5Cf 9/18/2012 123.44 120.86 58.41 55.83 65.03 - - <0.50 <1.0 <1.0 - - <1.0 - MW-SC g 9/18/2012 - - - - - - - - - - - - - - MW-5C 1/11/2013 123.44 120.86 57.00 54.42 66.44 - - <0.50 <1.0 <1.0 - - <1.0 - MW-5C 3/5/2013 123.44 120.86 56.26 53.68 67.18 - - - - - - - - - MW-SC 4/25/2013 123.44 120.86 56.11 53.53 67.33 - - <0.50 <3.0 <1.0 - - Q.0 - MW-SC 7/15/2013 123.44 120.86 58.18 55.60 65.26 - - <0.50 <3.0 <3.0 <3.0 <1.0 <1.0 - MW-5C 10/30/2013 123.44 120.86 59.00 56.42 64.44 - - <0.50 <1.0 <1.0 <3.0 <1.0 <1.0 -