ARCHIVED REPORTS_GROUNDWATER MONITORING REPORT - THIRD QUARTER 2014

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TABLE 1 Page 3 of 10 GROUNDWATER DATA FORMER SHELL CENTRAL VALLEY CRUDE OIL PIPELW ES CORDES RANCH TRACY,CALIFORNIA Ground Depth to Depth to Depth to m&p- o- Xylenes We1110 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 bgs ft MSL feet feet (49/L) pg/L µ9/L WE pg/L 114/L µg/L 49/L mg/L MW-SA 11/30/2012 123.34 120.89 34.76 32.31 88.79 34.50 0.26 - - - - - - - - MW-5A 12/28/2012 123.34 120.89 35.25 32.80 88.28 35.01 0.24 - - - - - - - - - MW-5A 1/11/2013 123.34 120.89 36.83 34.38 86.76 36.52 0.31 - - - - - - - - - MW-5A 2/21/2013 123.34 120.89 36.06 33.61 87.29 36.05 0.01 - - - - - - - - MW-5A 3/5/2013 123.34 120.89 36.20 33.75 87.16 36.18 0.02 - - - - - - - - - MW-5A 4/25/2013 123.34 120.89 36.65 34.20 86.75 36.58 0.07 - - - - - - - - - MW-SA 5/24/2013 123.34 120.89 36.29 33.84 87.07 36.26 0.03 - - - - - - - - - MW-SA 6/18/2013 123.34 120.89 36.46 34.01 86.89 36.45 0.01 - - - - - - - - - MW-SA 7/15/2013 123.34 120.89 35.96 33.51 87.40 35.94 0.02 - - - - - - - - MW-5A 8/15/2013 123.34 120.89 35.46 33.01 87.90 35.40 0.02 - - - - - - - - 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 0.08 - - - - - - - - - MW-5A 11/26/2013 123.34 120.89 35.30 32.85 88.06 35.27 0.03 - - - - - - - - MW-SA 12/17/2013 123.34 120.89 35.22 32.77 88.14 35.20 0.02 - - - - - - - - - MW-5A 1/23/2014 123.34 120.89 35.88 33.43 87.51 35.82 0.06 - - - - - - - MW-5A 2/18/2014 123.34 120.89 36.30 33.85 87.10 36.23 0.07 - - - - - - - - - MW-5A 3/21/2014 123.34 120.89 37.06 34.61 86.40 36.91 0.15 - - - - - - - - MW-SA 4/15/2014 123.34 120.89 36.92 34.47 86.56 36.75 0.17 - - - - - - - - MW-SA 5/8/2014 123.34 120.89 36.75 34.30 86.73 36.68 0.07 MW-5B 9/16/2010 123.44 120.92 35.68 33.16 87.76 - - 730 440 <0.50 <1.0 <1.0 <1.0 <1.0 - 2,180 MW-5B 12/10/2010 123.44 120.92 35.83 33.31 87.61 - - <250 160 <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 - - 470a <48b <0.50 <0.50 <0.50 - - <1.0 - MW-SB 9/8/2011 123.44 120.92 35.95 33.43 87.49 - - <470 <94 b <0.50 <0.50 <0.50 - - <1.0 - MW-SB 11/30/2011 123.44 120.92 35.60 33.08 87.84 - - - 54 d <0.50 <0.50 <0.50 - - <0.50 - MW-5B 3/22/2012 123.44 120.92 37.30 34.78 86.14 - - <240 - <0.50 <0.50 <0.50 - - <1.0 - MW-5B 6/27/2012 123.44 120.92 36.10 33.58 87.34 - - <240/<240b - <0.50 <0.50 <0.50 - - <1.0 - MW-5Bf 9/18/2012 123.44 120.92 34.86 32.34 88.58 - - 1,100 x1890 a,b - <0.50 <1.0 <1.0 - - <1.0 - MW-5B g 9/18/2012 - - - - - - - 1,000/310 b,e - - - - - - - - MW-513 1/11/2013 123.44 120.92 35.63 33.11 87.81 - - <250/<250 b - <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 - - <250/<250b - <0.50 <1.0 <1.0 - - <1.0 - MW-5B 7/15/2013 123.44 120.92 36.21 33.69 87.23 - - <250/<250b - <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 - - 300/<250b - <0.50 <3.0 <1.0 <1.0 <3.0 <3.0 - MW-5B 1/23/2014 123.44 120.92 36.05 33.53 87.39 - - 280/<250b - <0.50 <3.0 <3.0 <1.0 <1.0 <1.0 - MW-5B 4/15/2014 123.44 120.92 37.16 34.64 86.28 - - 1,700/1,3006 - <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 - - <250 <50 <0.50 <1.0 <1.0 <1.0 <1.0 - 1,850 CRRC60223 1371