ARCHIVED REPORTS_GROUNDWATER MONITORING REPORT - THIRD QUARTER 2013

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TABLE Page of GROUNDWATER DATA FORMER SHELL CENTRAL VALLEY CRUDE OIL PIPELINES CORDES RANCH TRACY,CALIFORNIA Ground Depth to Depth to Deptb m&p- o- Xylenes Well ID Smnple Date TOC Slaface Water Water GWEleo to SPH Thiclmess TPHc TPHd Beazeoe Toluette Etlnjibenzene Xylenes Xylene (total) TDS (ft MSL) (ft MSL) (ft TOC) (ft bSs) (ft MSL) (feet) (feet) (pg2) WVL) (AVL) (PO) (p&IL) (psa) (WE) (p9E) (mg/L) MW-6 8/23/2010 173.09 120.50 35.64 33.05 87.45 - - <250 <50 <0.50 <1.0 Q.0 2.0 <1.0 - - MW-6 12/9/2010 173.09 120.50 35.41 3282 87.68 - - <250 <50 <0.50 <1.0 2.0 - - Q.0 1,140 MW-6 6/27/2011 123.09 120.50 36.70 34.11 86.39 - - <240 <47b <0.50 <0.50 <0.50 - - n•0 - MW-6 9/8/2011 124.09 120.50 35.47 3288 87.62 - - <470 <94b <0.50 <0.50 <0.50 - - <1.0 - MW-6 11/30/2011 123.09 120.50 35.08 3249 88.01 - - - <47.2b <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 - MW-6f 9/18/2012 123.09 120.50 34.43 31.84 88.66 - - <150/<250b - <0.50 <1.0 <1.0 - - <1.0 - MW-6g 9/18/2012 _ _ _ _ _ _ _ 550/<240b,e - _ _ _ - - - MW-6 1/11/2013 123.09 120.50 35.24 3265 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 <LD - - <1.0 - MW6 7/15/2013 123.09 120.50 35.76 33.17 87.33 - - 500/260 b,k - <0.50 2.0 <1.0 <1.0 <1.0 Q.0 - MW-7 8/23/2010 124.11 121.68 36.6 3417 87.51 - - 250 <50 <0.50 <1.0 Q.0 <1.0 Q.0 - - MW-7 12/9/2010 12411 121.68 36.23 33.80 87.88 - - <250 <50 <0.50 <1.0 2.0 - - <1.0 1,140 MW-7 6/27/2011 12411 121.68 37.58 35.15 86.53 - - <240 <47b <0.50 <0.50 <0.50 - - <1.0 - MW-7 9/8/7011 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 12411 121.68 36.08 33.65 88.03 - - - <48.5b <0.50 <0.50 <0.50 - - <0.50 - MW-7 3/22/2012 12411 121.68 37.72 35.29 86.39 - - 240 - <0.50 <0.50 <0.50 - - <1.0 - MW-7 6/27/2012 124.11 121.68 36.56 3413 87.55 - - <2401260 b - <0.50 <0.50 <0.50 - - <1.0 - MW-7f 9/18/2012 124.11 121.68 35.49 33.05 88.63 - - <250/<250b - <0.50 Q.0 <1.0 - - n•0 MW-7g 9/18/2012 - _ _ _ _ _ _ 750/<240 be _ <y0 - MW-7 1/11/2013 124.11 121.68 36.13 33.70 87.98 - - 250/<250b - <0.50 Q.0 Q.0 <250/<250b - <0.50 Q.0 <1.0 <1.0 MW-7 4/25/2013 12411 121.68 37.37 34.94 86.74 - 760/430 b,k - <0.50 2.0 <1.0 <1.0 Q.0 <1.0 - MW-7 7/15/2013 124.11 121.68 36.66 3423 87.45 - - MW-8 8/23/2010 123.30 121.05 35.80 33.55 87.50 - - <250 <50 <0.50 <1.0 <1.0 <1.0 <1.0 - - MW-8 12/9/2010 123.30 121.05 35.53 33.28 87.77 - - <250 <50 <0.50 <1.0 Q.0 - _ <1.0 1,270 MW-8 6/27/2011 123.30 121.05 36.91 34.66 86.39 - - <240 <47b <0.50 <0.50 <0.50 <1.0 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 - - - <49.1b <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 - - 550/360 b - <0.50 <0.50 <0.50 - - <1.0 MW-8f 9/18/2012 123.30 121.05 3462 3237 88.68 - - <250/<250b - <0.50 <1.0 <1.0 - - <1.0 - MW-8g 9/18/2012 _ _ _ _ _ _ _ 390/<240 be - _ _ _ _ _ ainmova tut