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Table 12
<br /> Dual Phase Extraction System-Groundwater Mass Recovery and Adsorption
<br /> Parcel 2A-L&M OU
<br /> 666 West Weber Avenue,Stockton,CA
<br /> System Data Influent Concentrations TPHg Recovery TPHd Recovery TPHo Recovery Benzene Recovery MTBE Recovery TBA Recovery
<br /> Period Period Period Period Period Period Period
<br /> Volume Net Cumulative Net Cumulative Net Cumulative Net Cumulative Net Cumulative Net Cumulative
<br /> Date Extracted TPHg TPHd TPHo Benzene MtBE TBA Adsorbed Adsorbed Adsorbed Adsorbed Adsorbed Adsorbed Adsorbed Adsorbed Adsorbed Adsorbed Adsorbed Adsorbed
<br /> Sampled (gallons) (pg/[-) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) (lbs) (lbs) (lbs) (lbs) (lbs) (lbs) (lbs) (lbs) (lbs) (lbs) (lbs) (lbs)
<br /> 12/17/2008 156,800 3,600 170,000 85,000 <0.50 <0.50 6.0 3.27 134.07 140.62 7,797.35 73.91 4,013.77 0.000 0.040 0.000 0.002 0.004 0.999
<br /> 1/14/2009 122,990 4,400 99,000 34,000 <0.50 <0.50 <5.0 4.10 138.18 138.00 7,935.35 61.05 4,074.82 0.000 0.040 0.000 0.002 0.002 1.001
<br /> 2/11/2009 200,450 64 23,000 18,000 <0.50 <0.50 <5.0 3.73 141.91 102.00 8,037.36 43.48 4,118.30 0.000 0.040 0.000 0.002 0.000 1.001
<br /> 3/11/2009 107,160 1,500 27,000 18,000 19 <0.50 12 0.70 142.61 22.35 8,059.71 16.09 4,134.39 0.008 0.049 0.000 0.002 0.001 1.003
<br /> 4/16/2009 104,370 87 24,000 22,000 <0.50 <0.50 6.0 0.69 143.30 22.20 8,081.91 17.41 4,151.80 0.008 0.057 0.000 0.002 0.002 1.004
<br /> 5/8/2009 69,050 1,000 41,000 18,000 <0.50 <0.50 5.2 0.31 143.61 18.72 8,100.63 11.52 4,163.32 0.000 0.057 0.000 0.002 0.002 1.006
<br /> 6/8/2009 71,730 1,200 90,000 35,000 <0.50 <0.50 <5.0 0.66 144.27 39.19 8,139.82 15.86 4,179.18 0.000 0.057 0.000 0.002 0.002 1.008
<br /> 7/9/2009 91,030 930 81,000 33,000 <0.50 <0.50 <5.0 0.81 145.08 64.93 8,204.75 25.82 4,205.00 0.000 0.057 0.000 0.002 0.000 1.008
<br /> 8/11/2009 74,910 870 82,000 56,000 <0.50 <0.50 <5.0 0.56 145.64 50.93 8,255.68 27.81 4,232.81 0.000 0.057 0.000 0.002 0.000 1.008
<br /> 9/8/2009 42,980 510 47,000 34,000 <0.50 <0.50 <5.0 0.25 145.89 23.13 8,278.81 16.13 4,248.95 0.000 0.057 0.000 0.002 0.000 1.008
<br /> 10/15/2009 117,510 760 160,000 81,000 <0.50 <0.50 <5.0 0.62 146.51 101.46 8,380.27 56.37 4,305.31 0.000 0.057 0.000 0.002 0.000 1.008
<br /> 11/10/2009 59,490 420 220,000 130,000 <0.50 <0.50 9.2 0.29 146.80 94.29 8,474.56 52.36 4,357.67 0.000 0.057 0.000 0.002 0.008 1.017
<br /> 12/9/2009 49,860 110 21,000 14,000 <0.50 <0.50 5.4 0.11 146.91 50.12 8,524.69 29.95 4,387.62 0.000 0.057 0.000 0.002 0.001 1.018
<br /> 1/12/2010 77,700 400 140,000 110,000 <0.50 <0.50 <5.0 0.17 147.08 52.18 8,576.86 40.19 4,427.81 0.000 0.057 0.000 0.002 0.003 1.021
<br /> 2/4/2010 35,440 240 42,000 29,000 <0.50 <0.50 <5.0 0.09 147.17 26.90 8,603.77 20.55 4,448.35 0.000 0.057 0.000 0.002 0.000 1.021
<br /> 3/2/2010 142,045 480 170,000 130,000 <0.50 <0.50 6.0 0.43 147.60 125.61 8,729.38 94.21 4,542.56 0.000 0.057 0.000 0.002 0.004 1.025
<br /> 4/7/2010 109,705 230 56,000 42,000 <0.50 <0.50 5.3 0.32 147.92 103.42 8,832.79 78.71 4,621.26 0.000 0.057 0.000 0.002 0.003 1.028
<br /> 5/12/2010 74,720 3,200 150,000 67,000 <0.50 <0.50 8.9 1.07 148.99 64.20 8,897.00 33.97 4,655.24 0.000 0.057 0.000 0.002 0.009 1.037
<br /> 6/10/2010 57,550 170 800,000 600,000 <0.50 <0.50 <5.0 0.81 149.80 228.05 9,125.04 160.11 4,815.35 0.000 0.057 0.000 0.002 0.030 1.067
<br /> 7/12/2010 90,990 750 92,000 78,000 <0.50 <0.50 <5.0 0.35 150.15 338.54 9,463.58 257.32 5,072.67 0.000 0.057 0.000 0.002 0.000 1.067
<br /> 8/4/2010 52,300 520 5,800 2,800 <0.50 <0.50 <5.0 0.28 150.43 21.34 9484.92 17.63 5,090.30 0.000 0.057 0.000 0.002 0.000 1.067
<br /> 10/7/2010 82,780 740 72,000 32,000 <0.50 .< <5.0 4 6 9,,511.78 12.02 5,102.31 Me"r 0.057 02 -U7UU----9R67
<br /> 11/17/2010 100,160 <50 5,000 2,800 <0.50 <0.50 5.2 0.62 151.48 32.17 9,543.95 14.54 5,116.85 0.000 0.057 0.000 0.002 0.000 1.067
<br /> 12/14/2010 84,920 84 5,600 2,900 <0.50 <0.50 <5.0 0.06 151.54 3.75 9,547.70 2.02 5,118.87 0.000 0.057 0.000 0.002 0.000 1.067
<br /> Current Reporting Period: August 4,2010 to December 14,2010 Cumulative Totals: March 18,2004 to December 14,2010
<br /> Operational Hours 1,773 hours Number Days Operational Since Startup 1,352 days
<br /> Extracted Ground Water 267,860 gal Cumulative Total Gallons Extracted 5,725,230 gal
<br /> Average Flow Rate 2.5 gpm Cumulative Average Flow Rate 2.9 gpm
<br /> Pounds of TPHg Removed 1.1 lbs 0.0 lbs/day Cumulative Pounds of TPHg Removed 151.5 lbs 0.1 lbs/day
<br /> Pounds of TPHd Removed 62.8 lbs 0.9 lbs/day Cumulative Pounds of TPHd Removed 9,547.7 lbs 7.1 lbs/day
<br /> Pounds of TPHo Removed 28.6 lbs 0.4 lbs/day Cumulative Pounds of TPHo Removed 5,118.9 lbs 3.8 lbs/day
<br /> Pounds of Benzene Removed 0.0 lbs 0.0 lbs/day Cumulative Pounds of Benzene Removed 0.057 lbs 0.000 lbs/day
<br /> Pounds of MTBE Removed 0.0 lbs 0.0 lbs/day Cumulative Pounds of MTBE Removed 0.002 lbs 0.000 lbs/day
<br /> Pounds of TBA Removed 0.000 lbs 0.0000 lbs/day Cumulative Pounds of TBA Removed 1.067 lbs 0.001 lbs/day
<br /> Definitions:
<br /> TPHg=Total petroleum hydrocarbons as gasoline
<br /> TPHd=Total petroleum hydrocarbons as diesel
<br /> TPHo=Total petroleum hydrocarbons as oil
<br /> MTBE=Methyl-tertiary butyl ether
<br /> TBA=tertiary-butyl alcohol
<br /> gpm=gallons per minute
<br /> gal =gallons
<br /> pg/L=micrograms per liter
<br /> lbs/day=pounds per day
<br /> lbs =pounds
<br /> <=Value is less than laboratory reporting limit
<br /> --=Not analyzed/Not applicable
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