ARCHIVED REPORTS_GROUNDWATER MONITORING REPORT - THIRD QUARTER 2014

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TABLE 1 Page 5 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 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 (4g/L) µg/L PgIL µg/L 49/L p9/L WJ/L H9/L m9/L MW-7 6/27/2012 124.11 121.68 36.56 34.13 87.55 - - <240/260b - <0.50 <0.50 <0.50 - - <1.0 - MW-7f 9/18/2012 124.11 121.68 35.48 33.05 88.63 - - <250/<250b - <0.50 <1.0 <1.0 - - <1.0 MW-7g 9/18/2012 - - - - - - - 750/<240 b,e - - - - - - - - MW-7 1/11/2013 124.11 121.68 36.13 33.70 87.98 - - <250/<250b - <0.50 <1.0 <3.0 - - <1.0 - MW-7 4/25/2013 124.11 121.68 37.37 34.94 86.74 - - <250/<250b - <0.50 <3.0 <1.0 - - <1.0 - M W-7 7/15/2013 124.11 121.68 36.66 34.23 87.45 - - 760/430 b,It - <0.50 <1.0 <1.0 <1.0 <1.0 <3.0 -_ MW-7 10/30/2013 124.11 121.68 35.46 33.03 88.65 - - <250/<250b - <0.50 <3.0 <3.0 <1.0 <1.0 <1.0 - MW-7 1/23/2014 124.11 121.68 36.50 34.07 87.61 - - <250/<250b - <0.50 <3.0 <1.0 <3.0 <1.0 <3.0 - MW-7 4/15/2014 124.11 121.68 37.55 35.12 86.56 - - <240/<240b - <0.50 <1.0 <1.0 <1.0 <3.0 <3.0 - MW-8 8/23/2010 123.30 121.05 35.80 33.55 87.50 - - <250 <50 <0.50 <1.0 <1.0 <3.0 <1.0 - - MW-8 12/9/2010 123.30 121.05 35.53 33.28 87.77 - - <250 <50 <0.50 <1.0 <1.0 - - <1.0 1,270 MW-8 6/27/2011 123.30 121.05 36.91 34.66 86.39 - - <240 <47 b <0.50 <0.50 <0.50 - - <3.0 - MW-8 9/8/2011 123.30 121.05 35.67 33.42 87.63 - - <240 <47b <0.50 <0.50 <0.50 - - <1.0 MW-8 11/30/2011 123.30 121.05 35.38 33.13 87.92 - - - <48.1b <0.50 <0.50 <0.50 - - <0.50 - MW-8 3/22/2012 123.30 121.05 37.05 34.80 86.25 - - <240 - <0.50 <0.50 <0.50 - - <1.0 - MW-8 6/27/2012 123.30 121.05 35.80 33.55 87.50 - - 550/360b - <0.50 <0.50 <0.50 - - <1.0 - MW-8 f 9/18/2012 123.30 121.05 34.62 32.37 88.68 - - <250/<250 b - <0.50 <1.0 <3.0 - - <1.0 - MW-8g 9/18/2012 - - - - - - - 390/<240 b,e - - - - - - - MW-8 1/11/2013 123.30 121.05 35.39 33.14 87.91 - - <250/<250b - <0.50 <1.0 <1.0 - MW-8 4/25/2013 123.30 121.05 36.63 34.38 86.67 - - 310/270b - <0.50 <1.0 <1.0 - - <3.0 - MW-8 7/15/2013 123.30 121.05 35.95 33.70 87.35 - - <250/<250b - <0.50 <3.0 <1.0 <1.0 <1.0 <3.0 - MW-8 10/30/2013 123.30 121.05 34.67 32.42 88.63 - - <250/<250b - <0.50 <3.0 <1.0 <1.0 <1.0 <1.0 - MW-8 1/23/2014 123.30 121.05 35.86 33.61 87.44 - - <250/<250b - <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 - MW-R 4/15/2014 123.30 121.05 36.88 34.63 86.42 - - <240/<240b - <0.50 <1.0 <1.0 <I.0 <1.0 <1.0 - MW-9 8/23/2010 123.91 121.31 36.30 33.70 87.61 - - <250 <50 <0.50 <1.0 <S.0 <3.0 <1.0 - - MW-9 12/9/2010 123.91 12131 36.00 33.40 87.91 - - <250 <50 <0.50 <1.0 <1.0 - - <1.0 1,340 MW-9 6/27/2011 123.91 121.31 37.40 34.80 86.51 - - <240 <47b <0.50 <0.50 <0.50 - - <3.0 - MW-9 9/8/2011 123.91 121.31 36.25 33.65 87.66 - - <240 <50b <0.50 <0.50 <0.50 - - <1.0 - MW-9 11/30/2011 123.91 121.31 35.87 33.27 88.04 - - - <47.6b <0.50 <0.50 <0.50 - - <0.50 - MW-9 3/22/2012 123.91 121.31 37.58 34.98 86.33 - - <240 - <0.50 <0.50 <0.50 - - <1.0 - MW-9 6/27/2012 123.91 121.31 36.37 33.77 87.54 - - <240/<240b - <0.50 <0.50 <0.50 - - <1.0 - MW-9 f 9/18/2012 123.91 121.31 35.24 32.64 88.67 - - <250/<250 b - <0.50 <1.0 <1.0 - - <1.0 - M W-9 g 9/18/2012 - - - - - - - 310/<240 b,e - - - - - - - - MW-9 1/11/2013 123.91 121.31 35.90 33.30 88.01 - - <250/<250b - <0.50 <3.0 <1.0 - - <1.0 - MW-9 4/25/2013 123.91 121.31 37.20 34.60 86.71 - - <250/<250b - <0.50 <3.0 <1.0 - - <3.0 MW-9 7/15/2013 123.91 121.31 36.52 33.92 87.39 - - 2,900/2,100 b,k - <0.50 <1.0 <3.0 <1.0 <3.0 <1.0 cM00223 1371