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TABLE E a <br /> GROUNDWATER EXTRACTION EVALUATION <br /> FORMER EXXON RS 7-3942 <br /> 4444 NORTH PERSHING AVENUE,STOCKTON,CALIFORNIA <br /> Estimated Mass and Equivalent Concentration Value Unit Notes <br /> Estimated Petroleum Hydrocarbon Mass in Soil 18,500 Ib Euimemd <br /> Volume of Soil 120,000 cubic feet Sannalad on,bcsa.1`23 rwl bid,mM 12eX4b agnnre&al area around ac11 V4 and <br /> nenheaal property Wundan <br /> Density of Soil 1.7 kg/L Asaumpdan <br /> Equivalent Soil Weight 5.78E+06 kg <br /> Equivalent Petroleum Hydrocarbon Soil Concentration 1,456 mg/kg <br /> Soil-Water Partition Cocifcient,Kd 5L/kg sword,2w5 <br /> Equivalent Dissolved-Phase Concentration 291,109 ug/L <br /> Groundwater Extraction Time and Mass Removal Estimate <br /> Extraction Influent Dissolved-Phase Concentration Mass Removal Rate Estimated Time(years)to Remove 18,500 in <br /> Rate (ug/L) (Ib/day) of Petroleum Hydrocarbon Mass <br /> 100%.phase- 10%phase- 1%phase- 100%phase- 10%phase- 1%phase- 100'ZG phase- 10%phase- I%phase- <br /> (gpm) transfer rate transfer rate transfer rate transfer rate transfer rate transfer rate transfer rate transfer rate transfer rate <br /> 10 291,109 29,111 2,911 35 3.5 0.35 1.5 15 145 <br /> 145 years is the expected period of groundwater extraction system operation,which is based on ETIC's experience with the operation of <br /> groundwater extraction system at other petroleum hydrocarbon sites. <br /> Nog <br /> Mass rcmmal mm.lvdav=0.gwn•Civ.udL3 TRS USal Loin min/day'Ig/Ia'ii ug•I Ib/atm g <br /> Q. Eaxrcuon an, <br /> Cx: Inaucm dismkWphasc wnamndon I <br /> Ib:taxi a <br /> g'.gram <br /> 1, kilogram <br /> ug n .gran <br /> mg' and 1igm.n <br /> L liar <br /> gpm:gallon,rmmu¢ <br /> Rdb.— <br /> T&IC P. Ph,viv.Chemlcul and Toxaie Commnq Umd in Models. <br /> RaglonalW.,Qold,Cano-ol snout,San F.,,.Bm'Rini.2(W Si,.ening fn EneimaTiMMI Cw raa n Sides widn Conumiwld Soil and OrouMwatts-In¢rim Final. <br /> RWQCB.OakbIM.C411ofamia. F,Aruar, i1i March Updaaa. <br /> G\PMmlaU3942\PUBLIC\RWQCB09420WE Evaluation PngcloU <br />