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<br /> Historic Soil Gas Analytical Data
<br /> Parcel 2A and Adjacent Properties
<br /> West Weber Avenue and Lincoln Streets
<br /> Stockton,California
<br /> EPA Methods TO-3 GC/FID _ - TO-15 GC/MS Full Scan _ ASTM D-1946
<br /> EPA Methods' 8260B _ 8260E - GC/TCD
<br /> TPH C2+HC's Fuel Oxygenates Natural Gas
<br /> BTEX SVOCs Y9 Analysis
<br /> (Ref.Gas)
<br /> Casing Length Dilution Ethyp
<br /> Sample or Depth(bgs) Factor Date TPHg Benzene Toluene benzene Total Xylenes Naphthalene MTBE DIPE ETBE TBA TAME Methane Gas
<br /> IO feel TO-15 Sampled m') (ug/m') (ug/nn') (ug/m') (ug/m') (ug/m' ("91m) (u /m') (u /m') (ug/m' (ug/m) ppmv
<br /> Area 2A/2B And Adjacent Properties
<br /> APSV-9 1 4/25/2008 2 4,600,000 1100 1200 1100 120 1100 -100 1100 1100 '1,000 <100 11,000
<br /> (cont)
<br /> 1 7/25/2008 2 1,200,000 <100 1200 <100 <100 1100 <100 1100 1100 '1,000 <100 77,000
<br /> 1 10/24/2008 2 410,000 1100 1200 1700 1100 1700 1700 1100 1100 '7,000 1700 2,900
<br /> 1 2/20/2009 2 16,000 1100 <200 <100 1100 <100 <100 1100 1100 '1,000 1100 <1,000
<br /> 1 6/2/2009 2 88,000 '100 1200 1100 1100 <100 1100 1100 1100 <1,000 <100 1.800
<br /> 1 8(//2009 2 17,000 <100 <200 <100 1100 <100 -100 <100 <100 <1,000 1100 '1,000
<br /> 1 10/30/2009 2 '10,000 <100 <200 <100 <100 <100 '100 <100 <100 '1,000 <100 '1,000
<br /> 1 2/19/2010 2 <10,000 <100 <200 '100 <100 <100 <100 <100 <100 '1,000 <100 NS
<br /> 1 5/7/2010 2 '10,000 <100 <200 <100 <100 '100 '100 <100 '100 <1,000 <100 <1,000
<br /> 1 7/23/2010 2 11,000 <100 <200 <100 <100 <100 '100 <100 <100 <1,000 <100 0,000
<br /> 1 10/22/2010 2 '10,000 '100 '200 <100 <100 <100 <100 <100 <100 <1,000 -100 <1,000
<br /> 1 1/28/2011 2 <10,000 <100 <200 '100 <100 <100 <100 <100 <100 <1,000 <100 <1,000
<br /> 1 4/28/2011 2 83,000 -100 <200 <100 <100 '100 <100 '100 '100 <1,000 '100 58,000
<br /> 1 7/21/2011 2 82,000 <100 <200 <100 <100 -100 <100 '100 <100 <1,000 <100 62,000
<br /> 1 10/21/2011 2 180,000 -100 <200 <100 <100 <100 <100 <100 <100 <1,000 <100 140,000
<br /> 1 1/27/2012 2 '10.000 <100 '200 '100 <100 '100 '100 <100 <100 <1,000 '100 <1,000
<br /> 1 4123/2012 2 210,000 <100 '200 -100 <100 <100 <100 '100 '100 <1,000 <100 <1,000
<br /> 1 7/20/2012 2 140,000 <100 '200 '100 <100 '100 '100 '100 <100 '1,000 <100 86,000
<br /> 1 10/19/2012 2 180,000 '100 1200 '100 '100 <100 '100 <100 <100 <1.000 <100 110,000
<br /> 1 1/30/2013 2 78,000 '100 <200 <100 '100 <100 '100 '100 '100 -1,000 <100 110,000
<br /> 1 4/19/2013 2 <10,000 <100 '200 '100 '100 <100 <100 '100 <100 <1,000 '100 <1,000
<br /> 1 7/19/2013 2 '10,000 <100 <200 <100 <100 <100 <100 '100 '100 <1,000 <100 <1,000
<br /> 1 10/18/2013 2 85,000 <100 <200 '100 <100 '100 -100 -100 '100 '1,000 -100 150,000
<br /> 1 2/20/2014 2,5 540,000 180 <200 '100 <100 170 <100 <100 <100 -1,000 '100 220,000
<br /> 1 4/25/2014 2,5 1,000,000 40 -200 '100 <100 <35 <100 '100 <100 <1,000 <100 220,000
<br /> 1 7/11/2014 2,5 570,000 51 <200 <100 -100 <45 '100 <100 <100 '1000 <100 300,000
<br /> 1 11/7/2014 2,5 460,000 140 <200 <100 '100 135 <100 '100 <100 '1000 <100 210,000
<br /> 1 2/25/2015 2,5 980,000 <40 <200 <100 <100 <35 <100 <100 '100 <1,000 <100 280,000
<br /> 1 7/1/2015 2,5 2,100,000 41 <200 <100 '100 135 <100 '100 '100 -1,000 '100 230,000
<br /> 1 9/17/2015 2,5 2,500,000 <40 '200 <100 '100 135 <100 <100 <100 <1,000 <100 220,000
<br /> 1 12/15/2015 2,51 1,200,000 140 <200 <100 <100 135 1 '100 '100 '100 '1,000 <100 23.0,000
<br /> 9'200 ;
<br /> 000
<br /> APSV-94) 1 9/16/2005 2 4,600,000 <100 130 <100 200 '100 <100 '100 <100 '1,000 <100 32,000
<br /> 1 10/17/2005 2 4,100,000 <100 150 <100 350 -100 <100 '100 <100 <1,000 <100 70,000
<br /> 1 11/18/2005 2 1,700,000 -100 130 <100 220 <100 '100 <100 '100 <1,000 <100 55,000
<br /> 1 10!19/2012 2 220,000 -100 '200 <100 <100 '100 <100 <100 '100 <1,000 <100 110,000
<br /> Page 18 of 23
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