ARCHIVED REPORTS_GROUNDWATER MONITORING REPORT - THIRD QUARTER 2014

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TABLE 1 Page 4 of 10 GROUNDWATER DATA FORMER SHELL CENTRAL VALLEY CRUDE OIL PIPELINES CORDESRANCH TRACY,CALIFORNIA Ground Depth to Depth to Depth to m&p- o- Xylenes Well IO 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 bgs ft MSL feet feet (p9/L) IL9/L µ9/L µ9/L p9/L 49/L µ9/L WL m9/L MW-5C 12/10/2010 123.44 120.86 59.13 56.55 64.31 - - <250 <50 <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 - - <240 70 b <0.50 <0.50 <0.50 - - <1.0 - MW-5C 9/8/2011 123.44 120.86 58.35 55.77 65.09 - - <470 <94b <0.50 <0.50 <0.50 - - <1.0 - MW-5C 11/30/2011 123.44 120.86 57.70 55.12 65.74 - - - 161d <0.50 <0.50 <0.50 - - <0.50 - MW-5C 3/22/2012 123.44 120.86 56.57 53.99 66.87 - - 350 - <0.50 <0.50 <0.50 - - <1.0 - MW-5C 6/27/2012 123.44 120.86 56.94 54.35 66.50 - - <240/<240b - <0.50 <0.50 <0.50 - - <1.0 - MW-SCf 9/18/2012 123.44 120.86 58.41 55.83 65.03 - - 990/830 b - <0.50 <1.0 <1.0 - - <1.0 - MW-SCg 9/18/2012 - - - - - - - 2,400/1,100 b,e - - - - - - - _ MW-5C 1/11/2013 123.44 120.86 57.00 54.42 66.44 - - 1,9DO a/1,400 a,b - <0.50 <1.0 <1.0 - - <1.0 - MW-SC 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 - - <250/<250b - <0.50 <1.0 <1.0 - - <1.0 - MW-5C 7/15/2013 123.44 120.86 58.18 55.60 65.26 - - 1,300/1,000 b,k - <0.50 <1.0 <3.0 <3.0 <1.0 <1.0 - MW-5C 10/30/2013 123.44 120.86 59.00 56.42 64.44 - - <250/<250b - <0.50 <1.0 <3.0 <3.0 <1.0 <3.0 - MW-5C 1/23/2014 123.44 120.86 57.90 55.32 65.54 - - <250/<250b - <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 MW-SC 4/15/2014 123.44 120.86 57.20 54.62 66.24 - - 1,500/980b - <O.50 <3.0 <1.0 <1.0 <3.0 <1.0 - MW-6 8/23/2010 123.09 120.50 35.64 33.05 87.45 - - <250 <50 <0.50 <1.0 <1.0 <1.0 <1.0 - - MW-6 12/9/2010 123.09 120.50 35.41 32.82 87.68 - - <250 <50 <0.50 <1.0 <1.0 - - <1.0 1,140 MW-6 6/27/2011 123.09 120.50 36.70 34.11 66.39 - - <240 <47b <0.50 <0.50 <0.50 - - <1.0 - MW-6 9/8/2011 123.09 120.50 35.47 32.88 87.62 - - <470 <94b <0.50 <0.50 <0.50 - - <1.0 - MW-6 11/30/2011 123.09 120.50 35.08 32.49 88.01 - - - <47.2 b <0.50 <0.50 <0.50 - - <0.50 - MW-6 3/22/2012 123.09 120.50 36.96 34.37 86.13 - - <240 - <0.50 <0.50 <0.50 - - <1.0 - MW-6 6/27/2012 123.09 120.50 35.60 33.01 87.49 - - <240/<240b - <0.50 <0.50 <0.50 - - <1.0 - M W-6 f 9/18/2012 123.09 120.50 34.43 31.84 88.66 - - <250/<250 b - <0.50 <1.0 <1.0 - - <1.0 - MW-6g 9/18/2012 - - - - - - - 550/<240 b,e - - - - - MW-6 1/11/2013 123.09 120.50 35.24 32.65 87.85 - - <250/<250b - <0.50 <1.0 <1.0 - - <1.0 - MW-6 4/25/2013 123.09 120.50 36.33 33.74 86.76 - - <250/<250b - <0.50 <1.0 <1.0 - - <1.0 - M W-6 7/15/2013 123.09 120.50 35.76 33.17 87.33 - - 500/260 b,k - <0.50 <1.0 <1.0 <3.0 <3.0 <1.0 - MW-6 10/30/2013 123.09 120.50 34.49 31.90 88.60 - - <250/<250b - <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 - MW-6 1/23/2014 123.09 120.50 35.65 33.06 87.44 - - <250/<250b - <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 - MW-6 4/15/2014 123.09 120.50 36.69 34.10 86.40 - - 290/<250 b - <0.50 <3.0 <1.0 <1.0 <1.0 <1.0 - MW-7 8/23/2010 124.11 121.68 36.6 34.17 87.51 - - <250 <50 <O.50 <1.0 <1.0 <1.0 <1.0 - - MW-7 12/9/2010 124.11 121.68 36.23 33.80 87.88 - - <250 <50 <0.50 <1.0 <1.0 - - <1.0 1,140 MW-7 6/27/2011 124.11 121.68 37.58 35.15 86.53 - - <240 <47b <0.50 <0.50 <0.50 - - <1.0 - MW-7 9/8/2011 124.11 121.68 36.42 33.99 87.69 - - <470 <94b <0.50 <0.50 <0.50 - - <1.0 - MW-7 11/30/2011 124.11 121.68 36.08 33.65 88.03 - - - <48.5b <0.50 <0.50 <0.50 - - <0.50 - MW-7 3/22/2012 124.11 121.68 37.72 35.29 86.39 - - <240 - <0.50 <0.50 <0.50 - - <1.0 - CWO0223(37)