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R604 :UPDATE 24 11-15-1993 <br /> RECOMMENDATIONS <br /> 1 . Discontinue vapor recovery on MW5 and the newly <br /> installed vadose wells VSB3 , VSB5, VSB9 and VSB11 at <br /> this time. <br /> 2 . Continue to sample the ground water until closure is <br /> granted to confirm that the current Primary MCLS for <br /> water quality have been met . <br /> 3 . Perform monthly monitoring and sampling of the vapor <br /> stream using the WEGE portable lab FID-GC and <br /> confirmation for benzene and toluene with the PID 10x50 <br /> chromatograph and include the results in a monthly <br /> update status report, until system is turned off. <br /> 4 . Confirmation boring will be performed and coordinated <br /> with turning off and removing the vapor extraction <br /> system (VES) . <br /> 5 Arrange a meeting with RWQCB to finalize closure needs <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 /> to be worn. In the event that field screening indicates that <br /> 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 /> TIME FRAME <br /> November, 1993 Depth to ground water, vacuum <br /> influence, air sampling VES shut <br /> down and confirmation soil sample <br /> borings . <br /> LIMITATIONS <br /> This report is based upon the following: <br /> A. The observations of field personnel . <br /> B. The results of laboratory analyses performed by a state <br /> certified laboratory and WEGE' s non certified <br /> laboratory. <br /> C. Referenced documents . <br /> D. Our understanding of the regulations of the State of <br /> California, San Joaquin County and the City of <br /> Stockton. <br /> The services performed by Western Geo-Engineers, a corporation, <br /> page 7 <br />