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Table 16 Apartment Soil Vapor Extraction System-Soil Vapor Influent Analytical Data and Mass Recovery Parcel 2A-L&M OU 666 West Weber Avenue,Stockton,CA (In order to show best estimate,recovery calculations assume one-half of the detection limit when the compound is reported as less than the detection limit.) 10/27/2011 SV-INF2 d 3,722 115 68.0 <5.0 0.36 <0.050 <0.10 0.3 6.0 2,635.1 0.15 3.55 9.33 0.002 0.049 2.441 0.005 0.111 5.100 11/15/2011 SV-INF2 4,175 233 60.0 <5.0 0.20 <0.050 <0.10 0.2 3.1 2,638.2 0.05 0.86 10.19 0.001 0.026 2.467 0.003 0.058 5.158 12/15/2011 SV-INF2 4,894 196 55.0 <5.0 - <0.050 <0.10 0.2 6.1 2,644.4 -- -- 10.19 0.002 0.050 2.517 0.004 0.114 5.272 1/19/2012 SV-INF2 5,733 177 53.4 <5.0 - <0.050 <0.10 0.2 6.2 2,650.6 -- -- 10.19 0.001 0.051 2.568 0.003 0.115 5.387 2/28/2012 SV-INF2 6,262 279 70.5 <5.0 - <0.050 <0.10 0.2 4.8 2,655.4 -- -- 10.19 0.002 0.039 2.608 0.004 0.089 5.476 3/16/2012 SV-INF2 6,672 244 58.8 <5.0 - <0.050 <0.10 0.2 4.3 2,659.7 -- -- 10.19 0.002 0.035 2.643 0.005 0.079 5.555 4/6/2012 SV-INF2 a 6,909 262 -- 140 -- <0.050 <0.10 6.9 68.0 2,727.6 - -- 10.19 0.002 0.020 2.662 0.004 0.044 5.599 4/20/2012 SV-INF2 6,910 234 67.4 <5.0 - <0.050 <0.10 6.7 0.3 2,727.9 -- -- 10.19 0.002 0.019 2.662 0.004 0.043 5.598 5/8/2012 SV-INF2 7,339 231 65.2 <5.0 - <0.050 <0.10 0.2 4.0 2,731.9 -- -- 10.19 0.002 0.032 2.695 0.004 0.073 5.671 6/22/2012 SV-INF2 7,564 231 74.2 <5.0 - <0.050 <0.10 0.2 2.1 2,734.0 -- -- 10.19 0.002 0.017 2.711 0.004 0.038 5.709 7/12/2012 SV-INF2 8,042 232 71.0 <5.0 - <0.050 <0.10 0.2 4.4 2,738.3 -- -- 10.19 0.002 0.036 2.748 0.004 0.081 5.791 8/15/2012 SV-INF2 8,255 213 129.1 <5.0 - <0.050 <0.10 0.2 1.9 2,740.2 -- -- 10.19 0.002 0.015 2.763 0.004 0.035 5.826 9/21/2012 SV-INF2 8,606 243 76.0 <5.0 -- <0.050 <0.10 0.2 3.2 2,743.4 -- -- 10.19 0.002 0.026 2.789 0.004 0.059 5.885 10/19/2012 SV-INF2 8,902 295 76.0 <5.0 - <0.050 <0.10 0.3 3.2 2,746.6 -- -- 10.19 0.026 2.815 0.005 0.059 5.943 11/28/2012 SV-INF2 9,581 220 62.2 <5.0 - <0.050 <0.10 0.2 6.9 2,753.5 -- -- 10.19 0.057 2.872 0.005 0.129 6.072 -INF2 f 9,638 -- -- - - -- -- -- - 2,753.5 -- -- 10.19 - -- 2.872 - - 6.072 REPORTING PERIOD: September 21,2012 to December 21,2012 Period Pounds Removed[4]: 10.1 -- 0.083 0.19 Period Gallons Removed[5]: 1.7 - 0.011 0.03 Total Pounds Removed[6]: 2,753.5 10.19 2.872 6.07 Total Gallons Removed[7]: 451.4 1.42 0.391 0.98 Definitions: -- Data not available <=Value is less than laboratory reporting limit -=Data not available lbs=Pounds MtBE=Methyl tert-butyl ether ppmv=Parts per million by volume scfm=Standard cubic feet per minute TPI-Ig=Total petroleum hydrocarbons as gasoline TPI-Id=Total petroleum hydrocarbons as diesel Notes: a=System permitted under ATC number N-4878-2-0. Source test for air board. b=Diesel analyzed by Air Toxics LTD via EPA Method TO-17. c=Diesel sample collected on 9/22/11 d=Diesel sample collected on 10/28/11 e=Flow not measured in field. The average of the last two measured flows used as estimate. f=System shutdown due to combustion blower malfunction on December 7,2012. System left off pending repairs;samples unable to be collected. Kiff Analytical Molecular Weights: Air Toxics Molecular Weights: TPI-Ig=95 g/mol TPHd= 233 g/mol Benzene=78.1 g/mol MtBE=88.2 g/mol Specific Weight: Specific Weight of TPHg=6.1 pounds per gallon Specific Weight of benzene=7.4 pounds per gallon Specific Weight of MtBE=6.18 pounds per gallon Specific Weight of Diesel=7.18 pounds per gallon Equations: [Average of consecutive concentrations(ppmv)] Recovery Calculations= - ------------------------ X[Molecular Weight(g/mole)]X[1 Ibs/453.59 g]X[1.2641 moles/1 cf]X[Average of consecutive Flow Rates(scfm)]X[60 min/hr]X[24 hr/day]=XX.XXX lbs/day [1,000,000 parts] I:\Tidewater\TW Stockton(P2A)\Engineering\O&M\Tables\O&M Tables 2012k1012\Parcel 2A OM Tables 4012.Asx Page 2 of 2