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I <br /> INFLUENT AIR SAMPLE COLLECTION AND <br />' ANALYSES <br />' In-fluent Air Sammi <br /> On November 27, 2002, ASE collected an influent air sample (INF-VE-1 1 27 02) <br />' from the manifold of the 5 VE wells The sample was analyzed by Kiff <br /> Analytical of Davis, California (ELAP #2236) for total petroleum hydrocarbons <br /> as gasoline (TPH-G), benzene, toluene, ethylbenzene, and xylenes (collectively <br />' known as BTEX), the seven fuel oxygenates and lead scavengers by EPA Method <br /> 8260B The analytical results for this sample are tabulated in Table One The <br /> influent air sample analytical report and chain of custody record is attached in <br />' Appendix A <br /> MONTHLY FUEL RECOVERY CALCULATIONS <br /> Masa Removed___byAS/VE System <br /> The influent TPH-G concentration in air was used to calculate the estimated <br /> mass removed from the vadose-zone beneath the site during November based <br /> on the volume of air removed The Monthly Mass Extraction Calculations are <br /> presented as Table Two It shows that based on an average extraction flow <br /> rate of 60 cfm, and assuming a constant TPH-G concentration of 250 ug/1 in <br /> the influent air stream, the system recovered 0 22 gallons of gasoline per day <br /> from the vadose-zone The system operated 16 days in the month, and thus <br /> I3 52 gallons of gasoline were extracted from the vadose-zone during th e <br /> month To date, the AS/VE remediation system has recovered and remediated <br /> 511 37 gallons of gasoline at the site A graph showing the influent air <br /> concentration of TPH-G over time is presented in the graphs section of this <br /> report <br /> FREE-FLOATING PRODUCT IDENTIFICATION <br /> During the month of November 2002, ASE measured the product thickness in <br /> monitoring well MW-6 and piezometer P-4 using a balier There was n o <br /> measurable thickness of product in either well <br /> F'rank's One stop Remediation System Monthly Report — November 2002 <br />