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Table 10 Dual Phase Extraction System-Groundwater Mass Recovery and Adsorption 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.) System Data Influent Concentrations TPHg Recovery TPHd Recovery TPHo Recovery Benzene Recovery MTBE Recovery TBA Recovery Period Period Period Period Period Period Period Volume Net Cumulative Net Cumulative Net Cumulative Net Cumulative Net Cumulative Net Cumulative Date Extracted TPHg TPHd TPHo Benzene MtBE TBA Adsorbed Adsorbed Adsorbed Adsorbed Adsorbed Adsorbed Adsorbed Adsorbed Adsorbed Adsorbed Adsorbed Adsorbed Sam led allons /L /L /L /L /L /L lbs lbs lbs lbs lbs lbs lbs lbs lbs lbs lbs lbs 10312013 6,957 <50 2,600 920 <0.50 <0.50 <5.0 0.001 152.62 0.39 9,572.30 0.15 5,153.51 0.000 0.079 0.000 0.025 0.000 0.581 2/13/2014 3,228 <50 420 250 <0.50 <0.50 <5.0 0.001 152.62 0.04 9,572.34 0.02 5,153.52 0.000 0.079 0.000 0.025 0.000 0.581 3/27/2014 2,865 1,800 5,100 480 <0.50 <0.50 <5.0 0.022 152.64 0.07 9,572.40 0.01 5,153.53 0.000 0.079 0.000 0.025 0.000 0.581 4/28/2014 1,505 110 1,300 210 1.3 <0.50 <0.5 0.012 152.65 0.04 9,572.44 0.00 5,153.54 0.000 0.079 0.000 0.025 0.000 0.581 7/16/2014 440 250 <0.50 <0.50 <0.5 0.001 .00 1 0,00 000015,97foor 0.000 0.581 Current Reporting Period: June 30,2014 to September 30,2014 Cumulative Totals: March 18,2004 through September 30,2014 Hours Operated During Reporting Period 3.3 hours Number Days Operational Since Startup 1,697 days Extracted Ground Water 625 gal Cumulative Total Gallons Extracted 7,302,465 gal Average Flow Rate 2.98 gpm Cumulative Average Flow Rate 2.99 gpm Pounds of TPHg Removed During Period 0.001 lbs Cumulative Pounds of TPHg Removed 152.65 lbs 0.1 lbs/day Pounds of TPHd Removed During Period 0.005 lbs Cumulative Pounds of TPHd Removed 9,572.44 lbs 5.6 lbs/day Pounds of TPHo Removed During Period 0.001 lbs Cumulative Pounds of TPHo Removed 5,153.54 lbs 3.0 lbs/day Pounds of Benzene Removed During Period 0.000lbs Cumulative Pounds of Benzene Removed 0.079 lbs 0.000 lbs/day Pounds of MTBE Removed During Period 0.000 lbs Cumulative Pounds of MTBE Removed 0.025 lbs 0.000 lbs/day Pounds of TBA Removed During Period 0.000 lbs Cumulative Pounds of TBA Removed 0.581 lbs 0.000 lbs/day Definitions: Equations: TPHg=Total petroleum hydrocarbons as gasoline gal=gallons TPHd=Total petroleum hydrocarbons as diesel pg/L=micrograms per liter lbs adsorbed=(gallons groundwater extracted)*(AVG ug/l removed)*(2.2 Ib/kg)*(3.785 1/gal)*(10^-9 kg/ug) TPHo=Total petroleum hydrocarbons as oil lbs/day=pounds per day MTBE=Methyl-tertiary butyl ether lbs =pounds TBA=tertiary-butyl alcohol <=Value is less than laboratory reporting limit gpm=gallons per minute =Not analyzed/Not applicable V:\1857\active\tidewater\185750217_tidewater_Stockton_p2a\05_report_deliv\dings_designs\tables\O&M Tables 2014\3Q14\Parcel 2A OM Tables 3Q14.xlsx Page 26 of 66