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TRC-Alton Geosclence, Inc <br /> Dual-Phase Extraction Test Report Summary Sheet <br /> Event# 9 <br /> Quik Stop Market No 121 <br /> I196 West Louts Avenue AQMD# NA <br /> Manteca,California NPDES# NA <br /> DUAL PHASE EXTRACTION PERFORMANCE <br /> Dates)of Event(s) 12/28141 <br /> Total Operating Hours goo <br /> Technology Used High-vacuum liquid-ring pump with Thermal Oxidizer <br /> Max/Mm Influent Vapor Concentration(ppmv) 14801870 <br /> Max1Mm influent Flow Rate(cfm) 117!99 <br /> Max/Mm Influent Vacuum(inches of Hg) 17-51144 <br /> Total Recovery Volume(pounds/gallons)by Vapor 132112 11 <br /> LABORATORY ANALYSIS OF VAPOR SAMPLES <br /> Sam le Result u <br /> Well Time <br /> 1D Date Sam led TP14 " Benzenes Toluenes Ethvl Benzene' Total Xvleness MTBE <br /> RW I MW 3 28-Dec 01 9 00 AM 3 100 120 ND<10 ND<10 170 NA <br /> RW I MW 3 28 Dec 01 12 20 PM 3 500 120 180 120 750 NA <br /> RW I M W 3 28 Dec 01 2 30 PM 2 600 ND<10 1 180 220 1200 NA <br /> ADDITIONAL INFORMATION <br /> . •= Analyzed by EPA Method 8020 <br /> •'=Analyzed by EPA Method 8015 <br /> ug/L -micrograms per liter <br /> cfm -cubic feet per minute <br /> Ln Hg =inches of mercury <br /> TPH g =total petroleum hydrocarbons as gasoline <br /> MTBE =Methyl tert Butyl Ether <br /> ND =not detectable <br /> NA -not analvzed <br /> Prepared by Mark Trevor StaffGeologtst TRC Project No 41 0319 05 <br /> Approved by C[ L Walker R G Associate Submittal Date 7 Jan 02 <br /> i <br />