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TRC-Alton Geoscience, Inc <br /> Dual-Phase Extraction Test Report Summary Sheet <br /> Quik Stop Market No 121 <br /> 1196 West Lours Avenue AQMDk NA <br /> Manteca,Cahrornra NPDESlt NA <br /> DUAL-PELISSE EXTRACTION PERFOR,%INCE <br /> Date(s)of Event(s) 5!23101 <br /> Total Operating Hours Soo <br /> Technology Used High vacuum liquid nng pump with Thermal Oxidizer <br /> MaxlMua Vapor Concentration(ppmv)for Recovery Well RW 1 13,9601 I,410 <br /> Max1Mbn Flow Rate(efm)for Recovery Well RW 1 2616 <br /> Max/Mtn Vacuum(in U for Recovery Well RW 1 <br /> 233/5 <br /> Total Recovery Volume(gallons/pounds)by Vapor 992/6208 <br /> LABORATORY ANALYSIS OF VAPOR SAMPLES <br /> Sample Dates 23 May 01 <br /> Well Number RW-1 <br /> Sample Result my <br /> Well Time <br /> ID Date Sampled TPH Benzene" Toluene* Ethvl Benzene TotalXvlenes" NCTBE" <br /> RW l 23 May-01 9 35 AM 14 000 110 N D N D N D NA_ <br /> RW 1 23 May-01 1155 AM 13 000 100 N D N D N D N 4 <br /> RW 1 23 May 01 2 45 PM 7,20C 56 N D N D N D N A <br /> ADDITIONAL INFORMATION <br /> *m Analyzed by EP k Method 8260 <br /> **=Analyzed by EPA Method 8015 <br /> ppmv -parts per million by volume <br /> cfm -cubic Cod per minute <br /> m 12g -triches of mercury <br /> TPH g -total petroleum hydrocarbons as gasoline <br /> MTBE =Methyl tent Butyl Ether <br /> ND =not detectable <br /> NA -not analyzed <br /> Prepared by L/ Steve Kemnttz,Staff Scientist TRC Project No 41-031901 <br /> Approved by �G< L�" Tracy L Walker Associate Submittal Date 13-jun-01 <br /> i <br /> I <br /> rRc <br /> Customer Focused Solutions <br />