ARCHIVED REPORTS_GROUNDWATER MONITORING REPORT - THIRD QUARTER 2013

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TABLE Page 5 of 9 GROUNDWATER DATA FORMER SHELL CENTRAL VALLEY CRUDE OIL PIPELINES CORDES RANCH TRACY,CALIFORNIA Gromid Depth to Depth to Depth Well ID Sample Date TOC Simface Water Water GW Elea to SPH Thiclrness ln&p- o- Xylenes TpHe TPHd Benzene Tohueae Ethylbenzene Xylnies Xylene (total) TDS (ft MSL) (ft MSL) (ft TO C) (ftbgs) (ft MSL) (feet) (feet) WL) (pg/L) (per) WIL) (FNE) (T) (per) (pg&) (mg/L) MW-8 1/11/2013 123.30 121.05 35.39 33.14 87.91 MW-8 4/25/2013 123.30 121.05 36.63 34.38 86.67 <250/<2506 - <D.50 <1.0 <1.0 - - <].0 MW-8 7/15/2013 173.30 121.05 35.95 33.70 87.35310/270 b - <0.50 Q.0 Q,0 - - <1.0 - <250/<250b - <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 <0.50 <1.0 Q.0 <1.0 <1.0 MW-9 12/9/2010 123.91 121.31 36.00 33.40 87.91 - MW-9 6/27/2011 123.91 121.31 37.40 3480 86.51 _ 0 <50 <0.50 <1.0 Q.0 - - <1.0 113M MW-9 9/8/2011 123.91 121.31 36.25 33.65 87.66 <240 <47b <0.50 <0.50 <030 _ _ <0.50 50 <0.50 <240 <50 b <0. <.O MW-9 11/30/2011 173.91 121.31 35.87 33.27 88,04 _ _ - - <1.0 - MW-9 3/22/2012 123.91 121.31 37.58 34.98 86.33 _ - <47.6 b <0.50 <0.50 <0.50 - <0.50 MW-9 6/27/2012 123.91 121.31 36.37 33.77 87,54 <240 - <0.50 <0.50 <0.50 - _ <1.0 _ MW-9f 9/18/2012 123.91 121.31 35.24 3264 88.67 - - <240/<2406 - <0.50 c0.50 c0.50 - - <1.0 MW-9 g 9/18/2012 - _ - _ - - <250/<250 b - <0.50 <1.0 <1.0 _ _ <1.0 MW-9 1/11/2013 123.91 121.31 35.90 33.30 8801 310/<240 b,e _ - - MW-9 4/25/2013 129.91 121.31 37.20 3460 86.71 - <250/<250b - <0.50 <1.0 <3.0 - <1.0 MW-9 7/15/2013 123,91 121.31 36.52 33.92 8239 <250/<250b - <0.50 <3.0 q,0 _ _ <1.0 $900/$100 b,k - <0.50 Q.D Q.0 <1.0 <1.0 <1.0 MW-10 8/23/2010 12416 121.72 36.64 3,120 87.52 <250 <50 <0.50 <I.0 <I.0 <1.0 Q.0 MW-10 12/9/2010 12416 121.72 36.30 33.86 87.86 - MW-10 6/27/2011 12416 121.72 37.65 35.21 86.51 <250 <50 <0.50 <1.0 c1.0 - - <1.0 1,080 MW-10 9/8/2011 12416 121.72 36.48 3404 87.68 <240 <47b <0.50 <0.50 <0.50 - _ <240 <49 b <0.50 <0.50 <0.50 0 _ MW-10 11/30/2011 124.16 121.72 36.13 33.69 88.03 - - <3.0 MW-10 3/22/2012 124.16 121.72 3272 35.28 86.44 - - <48.5 b <0.50 <0.50 <0.50 - <0.50 240 <1.0 MW-10 6/27/2012 124.16 121.72 36.64 3420 87.52 _ _ <240/<240 240 40 b <0.50 <0.50 <0.50 - _ _ MW-101 9/18/2012 12416 121.72 35.50 33.06 88.66 / - <0.50 <0.50 <0.50 - - <1.0 MW-10 g 9/18/2012 - - c250/<250 b - <0.50 <1.0 <1.0 - - <1.0 MW-10 1/11/2013 124.16 121.72 36.14 33.70 88.02 310/<240 be - _ - - MW-10 4/25/2013 12416 121.72 37.38 3494 86.78 <250/<250b - c0.50 Q.0 Q.0 - - <1.0 MW-10 7/15/2013 12416 121.72 36.73 3429 87.49 280/<250b <0.50 Q.0 < .0 _ _ <1.0 <250/<250b - <0.50 <1.0 <1.0 <1.0 Q.0 Q.0 MW-11 8/23/2010 123.70 121.33 36.10 33.73 87.60 <250 <50 <0.50 <1.0 Q.0 Q.0 <1.0 MW-11 12/8/2010 123.70 121.33 35.86 33.49 87.84 - MW-11 6/27/2011 123.70 121.33 37.75 34.88 86.45 - <250 ¢50 <0.50 <1.0 <1.0 - _ - <240 52 b <0.50 <0.50 <0.50 Q.0 1,230 MW-11 9/8/2011 123.70 121.33 36.04 33.67 87.66 _ _ - Q.0 - MW-11 11/30/2011 123.70 121.33 35.70 33.33 88.00 <240 <48b <0.50 <0.50 <0.50 - _ <10 - - <47.6 b <0.50 <0.50 <0.50 - - <0.50 - atnosma'f N)