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<br /> Table 1 -SVE System Operating Parameters and TPHg Mass Removal
<br /> Chevron Facility#306620 (Former Unocal#5098)
<br /> 5400 and 5606 Pacific Avenue, Stockton, California
<br /> Cumulative Influent Effluent Total
<br /> Date Operation Time Flow TPHg Concentration Mass Flow TPHg Concentration Mass Emission Removal TPHg Mass
<br /> SVE AS Rate PID Laboratory Removal Rate Rate PID Laboratory Rate Efficiency Removed
<br /> (hours) (hours) (scfm)(U (PPmv) (PP-) (Ib/day)(2)Nl (scfm)(U (PPmv) (PPmv) (Ib/day)(�)NI (0)(3)(4) (lb)(5)(6)
<br /> Permit Limit of Permit Limit Permit Limit of Permit Limit of
<br /> 300 scfm of 300 scfm 13 ppmv <1.5 lb/day
<br /> 12/05/08 1,286 1,286 191 15.2 -- 1.1 172 10.1 -- 0.65 40 --
<br /> 12/11/08 1,429 1,430 135 45.0 -- 2.3 147 12.2 -- 0.67 70 --
<br /> 12/15/08 1,527 1,528 AS/SVE system LOTO due to spent carbon.
<br /> 12/18/08 1,527 1,528 AS system re-started, only operating on the north side of Robinhood Drive. SVE system not operating until carbon changeout.
<br /> 12/23/08 1,527 1,648 AS system operating on the north side of Robinhood Drive. SVE system not operating until carbon changeout.
<br /> 01/02/09 1,527 1,884 AS system shut down due to high water in auxillary tank; high alarm not functioning properly; shut down AS system to repair alarm.
<br /> 01/06/09 1,527 1,887 Repaired high alarm; LOTO for quarterly groundwater sampling event.
<br /> 01/13/09 1,527 1,887 Carbon vessels are emptied and re-filled with fresh carbon. SVE and AS systems re-started.
<br /> 01/13/09 1,527 1,887 162 10.4 43 2.6 176 0.1 0.11 0.01 100 11,357
<br /> 01/22/09 1,743 2,102 140 9.3 -- 0.5 205 0.4 -- 0.03 94 --
<br /> 01/27/09 1,863 2,222 227 8.3 -- 0.7 250 2.4 -- 0.22 68 --
<br /> 02/02/09 2,005 2,364 223 15.8 42 3.5 247 0.2 0.036 0.00 100 11,418
<br /> 02/12/09 2,248 2,603 225 4.8 -- 0.4 249 0.0 -- 0.00 100-
<br /> 02/19/09 2,411 2,771 206 12.9 -- 1.0 248 0.3 -- 0.03 97 --
<br /> 02/26/09 2,580 2,939 197 14.4 -- 1.1 242 0.0 -- 0.00 100 --
<br /> 03/04/09 2,725 3,084 218 9.8 -- 0.8 241 0.0 -- 0.00 100 --
<br /> 03/10/09 2,866 3,225 235 4.3 10 0.9 250 0.2 0.17 0.02 98 11,497
<br /> 03/19/09 3,084 3,443 187 16.1 -- 1.1 1 211 0.0 -- 0.00 100 --
<br /> 03/23/09 3,177 3,537 226 6.7 -- 0.6 265 1.0 -- 0.10 82 --
<br /> Notes:
<br /> (1) field data collected using a hot wire anemometer
<br /> (2)Mass Removal Rate (Ib/day)= Flow Rate (scfm)*TPHg Concentration (ppmv)/1,000,000* 1440(min/d)* 100(Ib/Ib-mol)/385 (ft 3/lb-mol)
<br /> (3)Removal Efficiency%= (Influent Mass Removal Rate(Ib/day)- Emission Rate(Ib/day))/(Influent Mass removal Rate(Ib/day))*100
<br /> (4)PID Data used in calculation if laboratory samples not collected for that day
<br /> (5)Total TPHg Mass Removed(lb)=(current month's Influent Mass Removal Rate+previous month's Influent Mass Removal Rate)/2/24 hr/day*(Current Hours- Previous
<br /> Hours) + Previous Total Removed
<br /> (6)Caluclated based on monthly analytical concentrations for accuracy
<br /> (7)Total mass removed by previous systems taken from last day of operation (12/06/07)as presented in the Quarterly Groundwater Monitoring and Remediation Status Report
<br /> and Updated Site Conceptual Model for the Fourth Quarter 2007, dated January 14, 2008.
<br /> (8)Influent flow rate not measured, effluent flow rate measurement used for calculation and assumed to be the same as the influent flow rate measurement
<br /> (9) Hot-wire anemometer gave anomolous readings. Value shown is the flow, measured in acfm from the pitot tube/chart recorder and converted to scfm, and assumed to be
<br /> the same for both the influent and effluent flow rate
<br /> SVE =Soil Vapor Extraction TPHg =total petroleum hydrocarbons as gasoline ppmv=parts per million by volume
<br /> AS =Air Sparging acfm= actual cubic feet per minute Ib/day= pounds per day
<br /> LOTO= Lock-Out/Tag-Out scfm=standard cubic feet per minute(at 14.7 psia and 68 OF) Ib=pound
<br /> PID= photoionization detector psia=pounds per square inch actual °F=degree Fahrenheit
<br /> --=Analytical samples not collected NC = Not caluculated due to negative removal efficiency; effluent mass emission rate below permit limit.
<br /> 2 of 2 AF(:r)M Fnvirnnmant
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