ARCHIVED REPORTS_SITE INVESTIGATION AND WELL DESTRUCTION PERMIT

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TABLE 3 Page 1 of 9 GROUNDWATER DATA FORMER SHELL CENTRAL VALLEY CRUDE OIL PIPELINES CORDES RANCH TRACY,CALIFORNIA Ground Depth to Depth to Depth to Map- o- Xylenes Well ID Sample Date TOC Surface Water Water GWEIev SPH Thickness TPHC TPHd Benzene Toluene Ethylbenzene Xylenes Xylene (total) TDS ft MSL ft MSL ft TOC ftb9s ft MSL feet feet (µ9/L) WJ/L R9/L p9/L 99/L µ9/L p9/L R9/L t^9/L 5250 <50 <0.50 <1.0 <1.0 <1.0 <1.0 - MW-1 8/23/2010 127.28 124.56 40.35 37.63 86.93 - <250 <50 <0.50 <1.0 <1.0 - - <1.0 1,530 MW-1 12/8/2010 127.28 124.56 40.45 37.73 86.83 - - <240 <49b <O.50 <0.50 <050 - - <1.0 - MW-1 6/27/2011 127.28 124.56 40.96 38.24 86.32 - <480 <95 b <0.50 <050 <050 - - <1.0 - MW-1 9/8/2011 127.28 124.56 40.02 37.30 87.26 -_ <47.6 b <0.50 <0.50 <0.50 - - <050 - MW-1 11/30/2011 127.28 124.56 39.18 36.46 88.10 - 2240 - <0.50 <0.50 <0.50 - - <1.0 - MW-1 3/22/2012 127.28 124.56 41.37 38.65 85.91 - <240/<240h - 00.50 00.50 <050 - - <1.0 - MW-1 6/28/2012 127.28 124.56 40.05 37.33 87.23 <250/<250 b - <050 <1.0 <1.0 - - <1.0 MW-1f 9/18/2012 127.28 124.56 39.16 36.44 88.12 _ _ 450/<240b,e - - - - - MW-1g 9/18/2012 - - - - - <250/<250b - 00.50 c1.0 01.0 - - <1.0 MW-1 1/11/2013 127.28 124.56 39.80 37.08 87.48 - - <0.50 <1.0 <1.0 - - c1.0 - MW-1 4/25/2013 127.28 124.56 41.05 38.33 86.23 - - <250/c250 b - <250<250 6 - 00.50 01.0 01.0 01.0 <1.0 <1.0 MW-1 3 127.28 124.56 39.95 37.23 87.33 - _ <250/Q50 b - <0.50 <1.0 <3.0 <3.0 <1.0 <1.0 - MW-1 10/30/0/30/200 13 127.28 124.56 39.00 36.28 88.28 <250/<250 b - <O.50 <1.0 <1.0 <1.0 <1.0 <1.0 MW-1 1/23/2014 127.28 124.56 40.01 37.29 87.27 <250/<250 b - <O.SO <1.0 <1.0 <1.0 <1.0 <1.0 MW-1 4/15/2014 127.28 124.56 40.89 38.17 86.39 - MW-2 8/23/2010 123.60 121.29 36.21 33.90 87.39 - 23,000 13,000 89 <1.0 1A <1.0 <1.0 - 11,000 6,800 190 <1.0 2.6 <1.0 1,550 MW-2 12/8/2010 123.60 121.29 36.03 33.72 87.57 - - - _ - - MW-2 6/27/2011 123.60 121.29 37.10 34.79 86.52 37.08 0.02 8,400 3,500 6 290 02.0 3.0 - - 54.0 MW-2 9/8/2011 123.60 121.29 35.98 33.67 87.62 - - 13,700 b 377 <OSO SAS - - <0.50 - MW-2 11/30/2011 123.60 121.29 35.70 33.39 87.90 - - - - - <4.0 - MW-2 3/22/2012 123.60 121.29 37.38 35.07 86.22 - - 13,000 - 150 <2.0 2A MW-2 6/28/2012 123.60 121.29 36.11 33.80 87.49 - - 13,000/9,800 b - 140 <1.0 2.0 - <2.0 MW-2f 9/18/2012 123.60 121.29 35.00 32.69 88.60 - - 4,000/3,000 b - 240 02.0 02.0 - - - MW-2 g 9/18/2012 - - - - - - - 18,000/9,500 b,e - - - 3A 52.0 - MW-2 1/11/2013 123.60 121.29 35.74 33.43 87.86 - - 4,100/2,700 b - 270 <2.0 MW-2 3/5/2013 123.60 121.29 36.42 34.11 87.18 - - _ <2.0 - MW-2 4/25/2013 123.60 121.29 36.85 34.54 86.75 - - 5,80 , 00, - 360 <2.0 2.5 - k - 320 <2.0 2.2 <2.0 <2.0 <2.0 MW-2 7/15/2013 123.60 121.29 36.31 34.00 87.29 - - 9,300//55,5500 b - - 7,800/6,300 b - 300 <2.0 2.7 <2.0 Q.0 <2.0 MW-2 10/30/2013 123.60 121.29 35.01 32.70 88.59 MW-2 1/23/2014 123.60 121.29 36.10 33.79 87.50 - - 9,000/6,300 b - <1.0 <1.0 <1.0 <1.0 <1.0 88 MW-2 4/15/2014 123.60 121.29 37.08 34.77 86.52 - - 3,400/2,600 6 - 88 01.0 51.0 01.0 01.0 01.0 MW-3 8/23/2010 123.70 121.07 36.38 33.75 87.32 - - <250 <50 <0.50 <1.0 <1.0 <1.0 <1.0 - <250 <50 <0.50 <1.0 <1.0 - <1.0 1,290 MW-3 12/8/2010 123.70 121.07 36.10 33.47 87.60 - - - <1.0 - MW-3 6/27/2011 123.70 121.07 37.34 34.71 86.36 - - <440 b 5050 <0.50 00.50 b <0.50 < .50 <0.50 - 01.0 MW-3 9/8/2011 123.70 121.07 36.36 33.73 8734 - 548800 <09595<q7.6 b 00.50 50O.50 00.50 - - 0050 - MW-3 11/30/2011 123.70 121.07 35.85 33.22 87.85 - - <0.50 <050 <0.50 - - <1.0 - MW-3 3/22/2012 123.70 121.07 37.47 34.84 86.23 - - 0240 _ MW-3 6/27/2012 123.70 121.07 36.22 33.59 87.48 - - <240/<24D b - <0.50 <050 <O50 = - <1.0 MW-3 f 9/18/2012 123.70 121.07 35.16 3253 88.54 - - 5250/2250 b - 0050 01.0 <S.0 03.0 MW-3 g 9/18/2012 - - - - - - - 580/0240 b,e - - - - MW-3 1/11/2013 123.70 121.07 35.85 33.22 87.85 - - <250/<250 b - 00.50- 01.0 <1.0 01.0 CPA WB(37)