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Table 10 <br /> Dual Phase Extraction System-Groundwater Mass Recovery and Adsorption <br /> Parcel 2A-L&M OU <br /> 666 West Weber Avenue,Stockton,CA <br /> (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.) <br /> System Data Influent Concentrations TPHg Recovery TPHd Recovery I 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) p /L p /L p /L p /L p /L pg/L)( lbs lbs lbs lbs lbs lbs lbs lbs lbs lbs lbs lbs <br /> Current Reporting Period: June 25,2013 to September 26,2013 Cumulative Totals: March 18,2004 through September 26,2013 <br /> Hours Operated During Reporting Period 14.5 hours Number Days Operational Since Startup 1,697 days <br /> Extracted Ground Water 56,795 gal Cumulative Total Gallons Extracted 7,287,285 gal <br /> Average Flow Rate 0.42 gpm Cumulative Average Flow Rate 2.98 gpm <br /> Pounds of TPHg Removed During Period 0.18 lbs 0.304 lbs/day Cumulative Pounds of TPHg Removed 152.62 lbs 0.1 lbs/day <br /> Pounds of TPHd Removed During Period 3.05 lbs 5.0 lbs/day Cumulative Pounds of TPHd Removed 9,571.90 lbs 5.6 lbs/day <br /> Pounds of TPHo Removed During Period 1.20 lbs 2.0 lbs/day Cumulative Pounds of TPHo Removed 5,153.36 lbs 3.0 lbs/day <br /> Pounds of Benzene Removed During Period 0.002 lbs 0.003 lbs/day Cumulative Pounds of Benzene Removed 0.079 lbs 0.000 lbs/day <br /> Pounds of MTBE Removed During Period 0.000 lbs 0.000 lbs/day Cumulative Pounds of MTBE Removed 0.025 lbs 0.000 lbs/day <br /> Pounds of TBA Removed During Period d16 0.002 lbs 0.003 lbs/day Cumulative Pounds of TBA Removed 0.581 lbs 0.000 lbs/day <br /> Definitions: Equations: <br /> TPHg =Total petroleum hydrocarbons as gasoline gal =gallons <br /> TPHcI =Total petroleum hydrocarbons as diesel pg/L=micrograms per liter lbs adsorbed=(gallons groundwater extracted)*(AVG ug/I removed)*(2.2 Ib/kg)*(3.785 1/gal)*(10^-9 kg/ug) <br /> TPHo=Total petroleum hydrocarbons as oil lbs/day=pounds per day <br /> MTBE =Methyl-tertiary butyl ether lbs =pounds <br /> TBA=tertiary-butyl alcohol < =Value is less than laboratory reporting limit <br /> gpm =gallons per minute -- =Not analyzed/Not applicable <br /> I:\Tidewater\TW Stockton(P2A)\Engineering\O&M\Tables\O&M Tables 2013\3Q13\Parcel 2A OM Tables 3Q13.xlsx Page 3 of 3 <br />