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R604 UPDATE 18 5-12-1993 <br /> February, 1992 Only trace amounts of fecal coliform have been <br /> . occasionally detected in any of the wells during those 3 months, <br /> see Table 2 <br /> RECOMMENDATIONS <br /> 1 Recommend this site for evaluation of closure, see <br /> Closure Evaluation Work Plan, UPDATE STATUS REPORT #15 . <br /> f <br /> 2 . Continue vapor recovery on MWS and the newly installed <br /> vadose wells VSB3 , VSB5 , VSB9 and VSB11 <br /> 3 Continue to monitor this site on a quarterly basis <br /> 4 . Obtain depth to ground water and vacuum influence <br /> readings to evaluate the effects of vapor recovery. <br /> 5 Perform monthly monitoring and sampling of the vapor <br /> stream using the WEGE portable lab FID-GC & <br /> confirmation for benzene and toluene with the PID 10 S � <br /> 50 chromatograph and include the results in a monthly <br /> update status report <br /> 6 Schedule and drill a confirmation soil sample boring <br /> west of SB9 to verify the removal of gasoline range <br /> hydrocarbons from the soil via vapor extraction. <br /> 7 . If field screening indicates that the soil produced <br /> from the confirmation sample boring is free of gasoline <br /> range hydrocarbons, obtain permits to destroy the <br /> existing vapor recovery wells and selected ground water <br /> monitoring wells that may interfere,with the future <br /> plans for this site <br /> 8 If field screening indicates that the soil produced <br /> from the confirmation boring contains gasoline range <br /> hydocarbons, convert this boring into a vapor recovery <br /> well and continue the vapor recovery process at this <br /> site <br /> HEALTH AND SAFETY <br /> This site has been classified as Class D personal protection <br /> Hard hats, gloves, steel toed boots and ear protection are <br /> required to be worn In the event that field screening indicates <br /> that volatile organic compounds (VOC' s) exists at the site, all <br /> personnel shall wear appropriate half face cartridge respirator <br /> with the black organic compound cartridges and particle filters <br /> All personnel must carry their identification card showing that <br /> they are current with OSHA/SARA training <br /> f <br /> j page 7 <br />