ARCHIVED REPORTS XR0012610 - Laserfiche WebLink

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�` .�-. } �a-t,^�t ' � � Y! .'��a �YF � �r�- � r �r�✓�' ,,� „b�b.. '� - v�k":*,y�rrx i- �f sr. �K a per: i p REGAL 603 8/16/91 were derived from the Bouwer and Rice Slug test. 6, The gasoline range contaminated ground water plumhas migrated past monitor well MW8 and is approaching eW; 7. Soil contamination is limited to the area directly earby beneatwell h the extendskfromathe�25 foot on and ndepth totop monitoring of ground MW10 an water. 8. A vapor extraction source test performed on MW10 show a steady flow rate of 50 scfpm can be achieved from this well with an average concentration of 37,867 ppm gasoline vapor and 14% methane. RECOMMENDATIONS 1. Proceed with the permitting "Authority to Construct" and "Permit to operate" for the "Hirtz" incinerator. 2. Finalize the permit to place treated ground water to the City of Stockton's sewer. 3. Recover contaminated ground water from monitor wells MW1 and MW3, using a gasoline rated air and pimps at a combined rate of 2000 gallons per day. 4. Place data logger transducers in monitor wells MW2, MW4, MW 7 and MW8 and record depth to water for one week; then obtain weekly depth to water measurements on all wells, after the data loggers have been removed, for one month and then monthly depth to water for one year, to show the radius of influence the pumping is providing. The data obtained should be calculated upon receipt, to justify the pump rate at monitor well MW3. 5, Pretreat the recovered ground water by removing svispended solids in a solids trap. This trap is vented to the incinerator and is heated/a:i.rstripped using a portion of the air supplied to the ,c:onvault" stripper. 6. Treat the recovered ground water by heated air stripping. 7. Sample the influent prior to the stripper and the effluent after the stripper to determine percent destruction and flow rates that will be needed for ongoing treatment. PAGE 2