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------- -- ------ TABLE 4 REMEDIATION PILOT TEST SVE COMPONENT - EXTRACTION AND EMISSION RATES Barnes Trucking, 1817 South Fresno Avenue, Stockton, California Hour Sys. Influent Effluent Sys. Influent Cone. Effluent Conc. Extraction Rate from Emissions Rate [o Destruction Removal Cumulative GRO Date 2 Sample Meter Flowrate Flowratet (m m3 (mJms) Wells (lbs/day)4 Atmosphere lbs/da. ) Efficiency %) Removal lbs 'z Time Readings (stem) (acfrn) GRO Benzene MTBE GRO Benzene MTBE GRO Benzene MTBE GRO Benzene MTBE GRO Benzen MTBE Period Total 4/29/20132 1 10: 11 512.4 91 .7 171 .7 81 3.5 <0.2 <15 <0. 15 <0. 15 0-67 0.03 <0.0016 <0.23 <0.002 <0.0023 65.3% 92.0% NC --- - 4/29/2013 2 13:30 515.8 90.9 170,9 71 5.0 <0.2 -- - -- 0.62 0.03 <0A016 - -- -- - - -- 0.09 0.09 4/292013 3 16:00 518.5 91 .3 171.3 380 10.0 <0.2 -- - - 1 .85 0.06 <0.0016 - -- -- - - - 0.21 0.30 5/1/2013 4 7.40 557.9 86. 1 166. 1 200 8.4 <0.20 -- -- - 2.24 0.07 <0.0015 - -- -- - -- - 3.68 3.98 5/3/2013 4 - 591 .6 -- - - - - - -- - 1 .55 -- -- - -- -- -- -- - 2. 17 6. 15 Legend / Ke seem = actual cubic feel per minute ORO = gasoline range organics safer = standard cubic feet per minute MTBE = methyl tertiary buryl ether Sys. = system Conc, = concentration mg/m' = milligrams per cubic meter lbs/day - pounds per day NC - Not Calculated due to influent and effluent concentrations were non-detect. i �Effluent Flow rate = System Influent flow rate + combustion air flow rate (80 cfin per marmitanrer's literature) '- GRO removed is calculated based on assuming 31 hours ofoperation occurred from start of test to First sample time. Hour mater readings based on most representative field data at tune of sampling for calculation purposes to approximate the mass removal. To calculate the extraction rate the ,svxteni influent concentrations are averaged between the sampling dates. Sample Calculations: Extraction Rate from 81 me x cu m ar x to x 91.7 cu it, x 1,440 rein = 1.23 lbs/day -� Wells (lbs/day) cu meter 35.3145 cu it 453593 mg min day Destruction Removal = (153.44 -Us) x100 = 99.83% Efficiency, % 153.44 Notes: 1 DPE test extracting from wall MW-10 only. 2 DPE test extracting from well MW-56 only. 3 DPE test extracting from wells TWA IW-7, IW-8, and MW-513. 4 DPE test, extracting from wells RV-7 and RV-8. Between 5/1/13 at 8, 10am to 5/2113 at 10 30a the system was extracting from well DV-8 only. System influent concentration and influent flow rate readings were not obtained prior to shutdown, due to the system automatically shut down fiom lack of propane mel before end of test. Therefore, the numerical values used (system influent flowrate and system influent concentration) to calculate the extraction rate ofGRO between 5/1/13 and end oftest were obtained from the 5/1/13 field visit. At this time the system remained extracting from wells PV-7 and RV-8. r.mtein ore int cablau Page l of l STRATUS