ARCHIVED REPORTS_GROUNDWATER MONITORING REPORT - THIRD QUARTER 2013

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TABLE 1 Page 6 of 9 GROUNDWATER DATA FORMER SHELL CENTRAL VALLEY CRUDE OIL PIPELINES CORDESRANCH TRACY,CALIFORNIA rn&p- o- Xylvws Ground Depth to Depth to Depth Well ID Srtmple Date TOC Surface Water Witter GWEIea to SPH Thickness TPHc TPHd Beuzni¢ Toluene Ethy[benznte Xylenes Xylene (total) TDS (ft MSL) (ft MSL) (ft TOC) (ft bSs) (fiMSL) (feet) (feet) (P91L) (P8/L) (PBL) (µ82) (P91L) (140) WIL) (P82) (nag/L) _ _ <240 _ <0.50 <0.50 <0.50 - - <1.0 - MW-11 3/22/2012 123.70 121.33 37.35 34.98 86.35 _ <240/<240b - <0.50 <0.50 <0.50 - - n.0 MW-11 6/27/2012 123.70 121.33 36.19 33.82 87.51 - <250/<2506 _ <0.50 <1.0 <.0 - - <1.0 - MW-111 9/18/2012 173.70 121.33 35.05 32.68 88.65 _ <290/290b,e - - - MW-11g 9/18/2012 - - - <250/<250b - <0.50 <.0 <1.0 - _ - <1.0 - MW-11 1/11/2013 123.70 121.33 35.72 33.35 87.98 - - - _ _ _ - - MW-11 3/5/2013 123.70 121.33 36.55 34.18 87.15 - <250/<250b <0.50 <.0 <1.0 - - <1.0 - MW-11 4/75/2013 123.70 121.33 36.90 34.53 86.80 <250/<750b <0.50 Q.0 <1.0 <.0 4.0 <1.0 - MW-11 7/15/2013 123.70 121.33 36.29 33.92 87.41 - - / MW-12 8/25/2011 124.82 121.89 37.36 34.43 87.46 - <480 <95b <0.50 <0.50 <0.50 - - <1.0 MW-12 9/8/2011 124.82 121.89 37.76 34.83 87.06 - <47.6b <0.50 <0.50 <0.50 - - <0.50 - MW-12 11/30/2011 124.82 121.89 38.84 35.91 85.98 - 300 - <0.50 <0.50 <0.50 - - <1.0 - MW-12 3/22/2012 124.82 121.89 38.43 35.50 86.39 _ <240/240b - <030 <0.50 <0.50 - - <1.0 - MW-12 6/28/2012 124.82 121.89 37.32 34.39 87.50 - <250/G0 - <0.50 <.0 <.0 - - <0 - MW-12f 9/18/2012 124.82 121.89 36.30 33.37 88.52 _ 0 be - - - - MW-12g 9/18/2012 - - - _ _ 6- 600/25250/50be250 b - 60.50 <.0 <1.0 - - <1.0 - MW-12 1/11/2013 124.82 121.89 36.85 33.92 87.97 560/440 b - <0.50 <.0 <1.0 - - <1.0 - MW-12 4/75/2013 124.82 121.89 38.07 35.14 86.75 - 67506 - <0.50 <1.0 <1.0 <.0 <.0 <1.0 - MW-12 7/15/2013 124.82 121.89 37.33 3440 87.49 - - <250/ MW-13B 8/25/2011 12293 120.64 38.92 36.63 54.01 - - 1,700 946 60.50 60.50 60.50 - - 61.0 - MW-13B 9/8/2011 122.93 120.64 37.98 35.69 84.95 - 0 60.50 60.50 - - <030 - MW-13B 11/30/2011 17293 120.64 37.44 35.15 85.49 - _ 0,67.46 60.5.5 <0.50 <0.50 - - <.0 - MW-1313 3/22/2012 122.93 120.64 38.60 36.31 84.33 - - 290 2,000/1,100 b - <0.50 <0.50 <0.50 <1.0 MW-13B 6/28/2012 12293 120.64 37.46 35.17 85.47 6250 62506 - 60.50 <.0 63.0 - - <1.0 - MW-13Bf 9/18/2012 12293 120.64 36.43 3414 86.50 - - / - _ _ _ - MW-13Bg 9/18/2012 - _ _ _ _ _ _ 6240/6240 be - - - <250/<250b 60.50 <.0 <.0 <.0 MW-13B 1/11/2073 722.93 120.64 36.90 34.61 86.03 - - _ MW-13B 3/5/2013 12293 120.64 37.84 35.55 85.09 - 6 - 60.50 <.0 <.0 - - <.0 MW-13B 4/25/2013 12293 120.64 38.10 35.81 84.83 - <250/<250 650 <250b - <0.50 <.0 <.0 61.0 <.0 <.0 - MW-13B 7/15/2013 12293 120.64 37.44 35.15 85.49 - - / MW-13C 8/25/2011 123.71 120.64 58.14 55.07 65.57 - - 640 <4$b 60.50 60.50 <0.50 - - <1.0 - MW-13C 9/8/2011 123.71 120.64 58.02 54.95 65.69 - _ 955 b <0.50 <0.50 60.50 - - <0.50 - MW-13C 11/30/2011 123.71 120.64 57.31 54.24 66.40 - ' aenobvn:+lel