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TABLET Page 1 of 4 WELL CONSTRUCTION DETAILS FORMER SHELL CENTRAL VALLEY CRUDE OIL PIPELINES n �p q CORDES RANCH PR<,,5U kr GRv"'�i r��J CfO.QRFGApr[OS TRACY,CALIFORNIA Soil We!!/Boring Boring Date Total Sample Groundwater Depth Casing Screen Irrte al ID Boring Type Diameter Completed TOC Depth Interoal First Encountered Static Diameter Slot Size Top Bottom (inches) (fbg) (ft) (/bg) (feet below TOC) (inches) (inches) (tbg) (fbg) Pb MW-1 Well Boring(HSA) 11 7/12/2010 127.80 48 5 37 40.35 2 0.020 33 48 MW-20'A Well Boring(HSA) 11 7/12/2010 123.60 45 5 37 36.21 2 0.020 30 45 MW-3 Well Boring(HSA) 11 7/14/2010 123.70 45 5 37 36.38 2 0.020 30 45 MW-4 Well Boring(HSA) 11 7/16/2010 123.41 45 5 37 36.00 2 0.020 30 45 MW-5A)b Well Boring(HSA) 11 7/13/2010 123.34 45 5 37 35.90 2 0.020 30 45 Phi MW-5B Well Boring(AR-RS) 12/6 9/1/2010 123.44 115 NS NA 35.68 2 0.020 105 115 P6 MW-5C Well Boring(AR-RS) 12/6 9/1/2010 123.44 175 C NA 60.14 2 0.020 160 175 P4 MW-6 Well Boring(HSA) 8 7/13/2010 123.09 45 5 37 35.64 2 0.020 30 45 f6 MW-7 Well Boring(HSA) 11 7/13/2010 124.11 48 5 37 36.60 2 0.020 33 48 k MW-8 Well Boxing(HSA) 8 7/15/2010 123.30 45 5 37 35.80 2 0.020 30 45 PG MW-9 Well Boring(HSA) 11 7/14/2010 123.91 45 5 37 36.30 2 0.020 30 45 P& MW-10 Well Boring(HSA) 8 7/14/2010 124.16 45 5 37 36.64 2 0.020 30 45 ? 6 MW-11 Well Boring(HSA) 8 7/15/2010 123.70 45 5 37 36.10 2 0.020 30 45 P/' MW-12 Well Boring(RS) 6 7/20/2011 124.82 45 C 40 37.36 2 0.020 35 45 V6 MW-13B Well Boring(RS) 6 7/29/2011 12293 125 C 41 38.92 2 0.020 110 125 P& MW-13C Well Boring(RS) 6 7/20/2010 123.71 178 C 40 58.14 2 0.020 163 173 PG MW-14B Well Boring(RS) 6 7/12/2011 120.66 125 C 42 36.82 2 0.020 110 125 PG MW-14C Well Boring(RS) 6 6/30/2011 120.64 182 C 38 56.52 2 0.020 167 177 MW-154� Well Boring(RS) 6 7/29/2011 127.06 50 5 41 40.18 2 0.020 30 50 VW-1 aP Well Boring 23/8 6/15/2011 121.48 10.5 5 NA NA % NA 4.7-9.7 5.3-10.3 VW-2 D Well Boring 23/8 6/15/2011 121.57 10.5 5 NA NA '/. NA 4.7-9.7 5.3-10.3 VW-3 Well Boring 23/8 6/15/2011 121.69 10.5 5 NA NA '/. NA 4.7-9.7 5.3-10.3 Abbreviations&Note,, TOC=Top of casing elevation(feet above mean sea level) fbg=Feet below grade ft=Feet HSA=Hollow stem auger AR-RS=Air rotary and roto-sonic vibration NS=Not sampled NA-Not available C=Continuous sample PG=Pressure Grout CR 060223(13)