ARCHIVED REPORTS_GROUNDWATER MONITORING REPORT - THIRD QUARTER 2014

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TABLE 1 Page 7 of 10 GROUNDWATER DATA FORMER SHELL CENTRAL VALLEY CRUDE OIL PIPELINES CORDES RANCH TRACY,CALIFORNIA Ground Depth to Depth to Depth to m&p- o- Xylenes Well ID Sample Date TOC Surface Water Water GWEIev SPH Thickness TPHc TPHd Benzene Toluene Ethylbenzene Xylenes Xylene (total) TDS ft MSL ft MSL ft TOC ft b9s ft MSL feet feet (p9/L) p9/L 99/L µ9/L µ91L p9/L µ9/L p9/L m9/L MW-12 9/8/2011 124.82 121.89 37.76 34.83 87.06 - - <480 <95 b <0.50 <0.50 <0.50 - - <1.0 - MW-12 11/30/2011 124.82 121.89 38.84 35.91 85.98 - - - <47.6b <0.50 <0.50 <0.50 - - <0.50 - MW-12 3/22/2012 124.82 121.89 38.43 35.50 86.39 - - 300 - <0.50 <0.50 <0.50 - - <1.0 - MW-12 6/28/2012 124.82 121.89 37.32 34.39 87.50 - - <240/240b - <0.50 <0.50 4.50 - - <1.0 - MW-12f 9/18/2012 124.82 121.89 36.30 33.37 88.52 - - <250/<250 - <0.50 <1.0 <1.0 - - <1X MW-12 g 9/18/2012 - - - - - - - 600/250 b,e - - - - - - - - MW-12 1/11/2013 124.82 121.89 36.85 33.92 87.97 - - <250/<250b - <0.50 <1.0 <1.0 - - <1.0 - MW-12 4/25/2013 124.82 121.89 38.07 35.14 86.75 - - S60/440b - <0.50 <3.0 <3.0 - - <3.0 - MW-12 7/15/2013 124.82 121.89 37.33 34.40 87.49 - - <250/<250b - <0.50 <1.0 <1.0 <1.0 <1.0 <3.0 - MW-12 10/30/2013 124.82 121.89 36.20 33.27 88.62 - - <250/<250b - <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 - MW-12 1/23/2014 124.82 121.89 37.14 34.21 87.68 - - <250/<250b - <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 - MW-12 4/15/2014 124.82 121.89 38.18 35.25 86.64 - - <250/<250b - <0.50 <1.0 <3.0 <1.0 <1.0 <1.0 - MW-138 8/25/2011 122.93 120.64 38.92 36.63 84.01 - - - - - - - - - - MW-13B 9/8/2011 122.93 120.64 37.98 35.69 84.95 - - 1,700 94b <0.50 <0.50 <0.50 - - <1.0 - MW-13B 11/30/2011 122.93 120.64 37.44 35.15 85.49 - - - 67.4b <0.50 <0.50 <0.50 - - <0.50 - MW-13B 3/22/2012 122.93 120.64 38.60 36.31 84.33 - - 290 - 0.78 <0.50 <0.50 - - <1.0 - MW-13B 6/28/2012 122.93 120.64 37.46 35.17 85.47 - - 2,000/1,1006 - <0.50 <0.50 <0.50 - - <1.0 - MW-13Bf 9/18/2012 122.93 120.64 36.43 34.14 86.50 - - <250/<250b - <0.50 <3.0 <1.0 - - <1.0 - MW-13Bg 9/18/2032 - - - - - - - <240/<240 b,e - - - - - - - - MW-13B 1/11/2013 122.93 120.64 36.90 34.61 86.03 - - <250/<250 b - <0.50 <1.0 <1.0 - - <1.0 - MW-13B 3/5/2013 122.93 120.64 37.84 35.55 85.09 - - - - - - - - - - - MW-138 4/25/2013 122.93 120.64 38.10 35.81 84.83 - - <250/<250b - <0.5D <1.0 <1.0 - - <1.0 - MW-138 7/15/2013 122.93 120.64 37.44 35.15 85.49 - - <250/<250b - <0.50 <1.0 <1.0 <3.0 <1.0 <1.0 - MW-13B 10/30/2013 122.93 120.64 36.27 33.98 86.66 - - 360/290 b - <0.50 <3.0 <1.0 <1.0 <3.0 <3.0 - MW-13B 1/23/2014 122.93 120.64 37.40 35.11 85.53 - - 480/300 b - <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 - MW-13B 4/15/2014 122.93 120.64 38.35 36.06 84.58 - - <250/<250b - <0.50 <1.0 <1.0 <1.0 <3.0 <3.0 - 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 - - <240 <48 b <0.50 <0.50 <0.50 - - <1.0 - MW-13C 11/30/2011 123.71 120.64 57.31 54.24 66.40 - - - 955 b <0.50 <0.50 <0.50 - - <0.50 - MW-13C 3/22/2012 123.71 120.64 56.14 53.07 67.57 - - 4,4001 - <0.50 <0.50 <0.50 - - <1.0 - MW-13C 6/28/2012 123.71 120.64 56.55 53.48 67.16 - - <240/<240b - <0.50 <0.50 <0.50 - - <1.0 - MW-13Cf 9/18/2012 123.71 120.64 58.00 54.93 65.71 - - 2,800 x12,500 ab - <0.50 <1.0 <1.0 - - <1.0 - MW-13Cg 9/18/2012 - - - - - - - 1,400/680 he - - - - - - - - MW-13C 1/11/2013 123.71 120.64 56.35 53.28 67.36 - - 3,200 a/2,400 a,b - <0.50 <1.0 <3.0 - - <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 - - <250/<250b - <0.50 <1.0 <1.0 - - <1.0 - CRA060223(37)