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• <br /> that area, but sample analyses indicates a similar vapor stream of <br /> 32,800 ppm TFH and 14% methane. All bag (tedlar) samples were <br /> analyzed for Total Fuel Hydrocarbons (TFH) as gasoline along with <br /> Benzene, Toluene, Ethylbenzene and Xylenes (BTEX) using DHS <br /> headspace method with FID chromatograph Western Geo-Engineers <br /> (WEGE) . Also a methane analysis was run using a dedicated methane <br /> infrared analyzer along with the FID chromatograph for <br /> confirmation. An influent sample to the charcoal was obtained <br /> prior to shutting the system off and disconnecting it from the <br /> wells ( for analysis by Chemtech Laboratories) . This sample was <br /> analyzed using EPA modified 8015 and 602 for TPH and BTEX, <br /> respectively, and used to profile the charcoal drums for shipment <br /> for regeneration. Throughout the test, vacuum readings were <br /> obtained from the ground water monitoring wells, to help establish <br /> the radius of influence of the vapor extraction system, see Figure <br /> 6B. <br /> This source test will helped evaluate the amount of fuel range <br /> hydrocarbons available and the supplemental fuel/oxygen needed to <br /> achieve incineration using the "Hartz" Incenerator for emissions <br /> control during ground water and soil remediation for this site. <br /> It also established a radius of influence that encompasses the <br /> contaminated capillary range area as shown on Figure 6B, see <br /> Figures 7 ground water treatment system and 8 schematic for vapor <br /> extraction system. <br /> 7 .0 CONCLUSIONS <br /> 1 . Floating product, clear yellow gasoline, has again been <br /> discovered in monitor well MW1 at a thickness of 0.081 . <br /> 2. High levels of dissolved constituents of gasoline occur <br /> beneath the site in the ground water and trend off site <br /> towards monitor well MW8 , to the east. <br /> 3. During sampling of MW3, MW7, MWS and MW10 distinctive <br /> bio odors and a greyish green color of the purged water <br /> were noted, suggesting that active in-situ <br /> biodegradation is occurring along the parameters of the <br /> plume. <br /> 4 . Analysis for fecal coliform indicates that the sewer <br /> near monitoring well MW8 leaks and is entering the <br /> ground water. <br /> 5. Ground water levels show that the aquifer is still <br /> discharging (lowering) with an irregular surface forming <br /> a trough that flows from monitor well MW1 east towards <br /> MW2 and then southeast towards MW3 and onto MWS. Th3-s <br /> 12 <br />