ARCHIVED REPORTS_SITE INVESTIGATION AND WELL DESTRUCTION PERMIT

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TABLE 3 Page 5 of 9 GROUNDWATER DATA FORMER SHELL CENTRAL VALLEY CRUDE OIL PIPELINES CORDES RANCH TRACY,CALIFORNIA Ground Depth to Depth to Depth to m&p- o- Xylenes we//1D Sample Date TOC Surface Water Water GWElev SpH Thickness TPHC TPHd Benzene Toluene Ethylbenzene Xylenes Xylene (total) TDS ftMSL ft MSL ft TOC ft b9s ft MSL feet feet IN9/0 119/L WJ/L 1L9/L µ9/L Val. p9/L µ9/L m9/L MW-8 4/25/2013 123.30 121.05 36.63 34.38 86.67 - - 310/270b - <0.50 <1.0 <1.0 - - <1.0 - MW-8 7/15/2013 723.30 121.05 35.95 33.70 87.35 - - <250/<250b <0.50 <1.0 <3.0 <3.0 <3.0 <3.0 = MW-8 10/30/2013 123.30 121.05 34.67 32.42 88.63 - - <250/<250 b - <0.50 <1.0 <1.0 <1.0 <1.0 <3.0 MW-8 1/23/2014 123.30 121.05 35.86 33.61 87.44 - - -<250/<250 b <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 MW-8 4/15/2014 123.30 121.05 36.88 34.63 86.42 - - <240/240b - <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 MW-9 8/23/2010 123.91 121.31 36.30 33.70 87.61 - - <250 <50 <050 <3.0 <1.0 <3.0 <1.0 - <250 <50 <0.50 <1.0 <1.0 - <1.0 1,340 MW-9 12/9/2010 123.91 121.31 36.00 33.40 87.91 - - _ <1.0 - MW-9 6/27/2011 123.91 121.31 37.40 34.80 86.51 - - <240 <47b <0.50 <0.50 <0.50 - <240 <50 b <0.50 <0S0 <0.50 - <1.0 MW-9 9/8/2011 123.91 121.31 36.25 33.65 87.66 - - <47.6 b <0.50 <0.50 <0.50 - - <0.50 - MW-9 11/30/2011 123.91 121.31 35.87 33.27 88.04 - - <240 - <0.50 <0.50 <050 - - <1.0 - MW-9 3/22/2012 123.91 121.31 37.58 34.98 86.33 - - <240/<240 b - <0.50 <0.50 <0.50 - - <1.0 - MW-9 6/27/2012 123.91 121.31 36.37 33.77 87.54 - <250/<250 b - <O50 <1.0 <1.0 - - <1.0 - MW-9f 9/18/2012 123.91 121.31 35.24 32.64 88.67 - - - - MW-9 g 9/18/2012 - - - - - 310/<240 b,e - - - - MW-9 1/11/2013 123.91 121.31 35.90 33.30 88.01 - - <250/2 050b - <0.50 <1.0 <S. <1.0 MW-9 4/25/2013 123.91 121.31 37.20 34.60 86.71 - - <250/<250 b - <0.50 <1.0 <1.0 - <1.0 MW-9 7/15/2013 123.91 121.31 36.52 33.92 87.39 - - 2,900/2,300 b,k - <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 MW-9 10/30/2013 123.91 121.31 35.17 32.57 88.74 - - <250/<250b - <0.50 <3.0 <1.0 <1.0 <1.0 <S.0 MW-9 1/23/2014 123.91 121.31 36.35 33.75 87.56 - - <250/<250 b - <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 MW-9 4/15/2014 123.91 121.31 37.35 34.75 86.56 - - 250/<250 b - <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 MW-10 8/23/2010 124.16 121.72 36.64 34.20 87.52 - - <250 <50 <0.50 <1.0 <1.0 <1.0 <1.0 - <250 <50 <0.50 <1.0 <1.0 - <1.0 1,080 MW-30 12/9/2010 124.16 121.72 36.30 33.86 87.86 - - - <1.0 - MW-10 6/27/2011 124.16 121.72 37.65 35.21 86.51 - - <40 <49 b <0.50 <0.50 <0.50 <240 <49 6 <OSO <0.50 <0.50 - <3.0 MW-SD 9/8/2011 124.16 121.72 36.48 34.04 87.68 - - <48.5 b <0.50 <0.50 <0.50 - - <0.50 - MW-10 11/30/2011 124.16 121.72 36.13 33.69 88.03 - - - - <1.0 - MW-10 3/22/2012 124.16 121.72 37.72 35.28 86.44 - - <240 - <0.50 <0.50 <D.50 - - <1.0 MW-10 6/27/2012 124.16 121.72 36.64 34.20 87.52 - - - <240/<240 b - <0.50 <0.50 <0.50 MW-10 f 9/18/2012 124.16 121.72 35.50 33.06 88.66 - - <250/<250 b - <0.50 <1.0 <1.0 - <1.0 MW-10 g 9/18/2012 - - - - - - - 310/240 be - - " MW-10 1/11/2013 124.16 121.72 36.14 33.70 88.02 - - <250/<250b - <0.50 <1.0 <1.0 <1.0 <1.0 MW-10 4/25/2013 124.16 121.72 37.38 34.94 86.78 - _ 280/<250 b - <050 <1.0 <1.0 -<0.50 <1.0 <1.0 <1.0 <1.0 <1.0 - MW-10 7/15/2013 124.16 121.72 36.73 34.29 87.43 - - <250/<250 6 - MW-10 10/30/2013 124.16 121.72 35.48 33.04 88.68 - - <250/<250b <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 MW-10 1/23/2014 124.16 121.72 36.57 34.13 87.59 - - <250/<250b - <0.50 <1.0 <1.0 <3.0 <3.0 <3.0 MW-30 4/15/2014 124.16 121.72 37.60 35.16 86.56 - - <250/<250 b - <D.50 <1.0 <1.0 <1.0 <1.0 <1.0 MW-11 8/23/2010 123.70 121.33 36.10 33.73 87.60 - - <250 <50 <0.50 <1.0 <1.0 <1.0 <1.0 - <250 <50 <0.50 <1.0 <1.0 - - <1.0 1,230 MW-11 12/8/2010 123.70 121.33 35.86 33.49 87.84 - - <1.0 - MW-11 6/27/2011 123.70 121.33 37.25 34.88 86.45 - - <240 48 <0.50 <0.50 <0.0 - <240 <48 b <0.50 <0.50 <0.50 - <15 MW-11 9/8/2011 123.70 121.33 36.04 33.67 87.66 - - - <0.50 - MW-11 11/30/2011 123.70 121.33 35.70 33.33 88.00 - - - <47.6 b <0.50 <0.50 <0.50 - CW60223 IV) -