ARCHIVED REPORTS_SITE INVESTIGATION AND WELL DESTRUCTION PERMIT

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Page 7 of 9 TABLE 3 GROUNDWATER DATA FORMER SHELL CENTRAL VALLEY CRUDE OIL PIPELINES CORDES RANCH TRACY,CALIFORNIA mgp- a- Xylenes Ground Depth to Depth to Depth to Well ID Sample Date TOC Surface Water Water GWElev SPH Thickness TPNc p9/L µ9/L µttg/L TpHd Benzene Toluene Ethy µ9/L µ9 µ9/L m ne Xylenes Xylene (total) TDS ft MSL ft MSL ft TOC ft b95 ft MSL feet feet lµ9/L) µ9/L 9/L - - <0.50 <0.50 <0.50 - <050 - _ 955 b 13.0 - MW-13C 11/30/2011 123.71 120.64 57.31 54.24 66.40 - - g 4O0J - <0.50 <0.50 <0.50 - _ MW-13C 3/22/2012 123.71 120.64 56.14 53.07 67.57 - _ <0.50 <0.50 <0.50 - - 41.0 <240/<24Ob _ 11.0 MW-13C 6/28/2012 123.71 120.64 56.55 53.48 67.16 - - 2,800,/1,500 o,b - 10.50 11.0 11.0 MW-13Cf 9/18/2012 123.71 120.64 58.00 54.93 65.71 - 1,400/680 b,e - - _ <1.0 - MW-13C9 9/18/2012 - - - _ 3,200 a/2,400 a,b - <0.50 <1.0 <1.O MW-13C 1/11/2013 123.71 120.64 56.35 53.28 67.36 - - _ - - MW-13C 3/5/2013 123.71 120.64 55.90 52.83 67.81 - - _ <0.50 <1.0 <1.0 - - 11.0 - - MW-13C 4/25/2013 123.71 120.64 59.79 56.72 63.92 350/<250 b 1250/1250 b - <0.50 <1.0 <1.0 <1.0 <1.0 11.0 MW-13C 7/15/2013 123.71 120.64 57.63 54.56 6 .08 _ 590/460 b - <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 MW-13C 10/30/2013 123.71 120.64 58.28 55.21 655.43 <250/<250 b - <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 66.22 - - 430/350 b - 10.50 11.0 11.0 11.0 11.0 11.0 MW-13C 1/23/2014 123.71 120.64 57.49 54.42 MW-13C 4/15/2014 123.71 120.64 56.70 53.63 67.01 MW-14B 8/25/2031 120.66 117.42 36.82 33.58 83.84 - - 10.50 - - <1.0 - 1240 <47 h <050 <0.50 10.50 MW-14B 9/8/2011 120.66 117.42 34.42 31.18 86.24 - - 211 b <0.50 10.50 <0.50 - MW-14B 11/30/2011 120.66 117.42 33.33 30.09 87.33 - - 1,q 10.50 10.50 - <1.0 530 <0.50 - - 11.0 - MW-14B 3/22/2012 120.66 117.42 35.34 32.10 85.32 SpOO/77O b _ 10.50 <0.50 MW-14B 6/28/2012 120.66 117.42 33.55 30.31 87.11 - _ 1080 11.0 11.0 - 13.0 _ _ 340/1250 b _ _ _ _ MW-14Bf 9/18/2012 120.66 117.42 32.36 29.12 88.30 _ - 550/<240 b,e - - - _ <1.0 MW-1489 9/18/2012 - - _ 2,900 a/2,800 a,b - <0.50 <1.0 <1.0 MW-14B 1/11/2013 120.66 117.42 33.50 30.26 87.16 - - - _ - - <-0 MW-14B 3/5/2013 120.66 117.42 34.48 31.24 86.18 - 1250/1250 h - 10.50 11.0 <1.0 MW-14B 4/25/2013 120.66 117.42 34.89 31.65 85 _77 1,400/1,100 b,It - <0.50 <1.0 11.0 <1.0 <1.0 <1.0 MW-14B 7/15/2013 120.66 117.42 33.82 30.58 86.84 - <250/<250 b - <0.50 <1.0 <1.0 <1.0 <1.0 11.0 MW-145 10/30/2013 120.66 117.42 27.87 24.63 92.79 - _ <250/<250 h - <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 MW-14B 1/23/2014 120.66 117.42 34.03 30.79 86.63 - _ 10.50 11.0 <1.0 <1.0 11.0 <1.0 MW-148 4/15/2014 120.66 117.42 34.92 31.68 85.74 - 540/360 b MW-14C 8/25/2011 120.64 117.43 40.16 36.95 80.48 - 10.50 - - <1.0 - <480 <95 b <0.50 <0.50 1050 MW-14C 9/8/2011 120.64 117.43 56.52 53.31 64.12 - _ 147.2 b <0.50 10.50 <0.50 - - MW-14C 11/30/2011 120.64 117.43 55.81 52.60 64.83 - - _ 10.50 10.50 10.50 - - <0.50 - 450 <O.SO - - 10.50 - MW-14C 3/22/2012 120.64 117.43 54.58 51.37 65.06 <240/<240 b _ <0.50 <0.50 MW-14C 6/28/2012 120.64 117.43 54.96 51.75 65.68 - _ <0.50 <1.0 <1.0 - 600,/510 a,b - MW-14Cf 9/18/2012 120.64 117.43 56.52 53.31 64.12 _ 930/450 b,e - - _ - MW-14C9 9/18/2012 - - - - - 10.50 <1.0 11.0 - 11.0 71O,/69O a,b _ _ MW-14C 1/11/2013 120.64 117.43 55.00 51.79 65.64 _ - - - 11.0 - MW-14C 3/5/2013 120.64 117.43 54.24 51.03 66.40 - _ 1250/250 b - 10.50 11.0 11.0 - - MW-14C 4/25/2013 120.64 117.43 54.20 50.99 66.44 _ <250/<250 b - <0.50 <1.0 <1.0 <1.0 <1.0 11.0 MW-14C 7/15/2013 120.64 117.43 56.19 52.98 6445 1250/1250 b - <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 MW-14C 10/30/2013 120.64 117.43 56.95 53.74 63.69 <250/250 b - <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 MW-14C 1/23/2014 120.64 117.43 55.94 52.73 6470 250/<250 b - <D.5O <1.0 <1.0 <1.0 <1.0 <1.0 MW-14C 4/15/2014 120.64 117.43 55.11 51.90 65.53 - CP 0223 1371