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Absence Environmental Serv►,.es <br /> 3060 Thomtree Drive #60 <br /> Chico, Ca. 95973 <br /> Phone (530)345-8562 Fax.(530)345-4028 Cont. Lie #715279 <br /> June 10, 1998 <br /> PUBLIC HEALTH SERVICES <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, CA 95202 <br /> Attn Michael J Infuma Jr , Senior RENS <br /> UGT Investigation/Site Mitigation Unit IV <br /> Re: Site Activity Report— Underground Storage Tank Removals <br /> Underground Storage Tank (UST's) Soil Confirmation Results <br /> Military Department, Stockton Army Air Support Facility <br /> 2000 Stimson Road, Stockton, CA 95206 <br /> Contract No UT0708, Work Order No MAR 504-0419605 <br /> Dear Mr Infurna, <br /> Please find enclosed the initial laboratory results, waste charactenzation laboratory <br /> results and disposal documents for the Underground Storage Tank's (UST's), and soil <br /> samples that were taken from the two 20,000 gallon fuel tank's excavation located at the <br /> above site The removal work was performed on May 27, 1998 in accordance with the <br /> approved work plan and county permits submitted on January 16, 1998 <br /> Approximately 7,900 gallons of sludge, waste water and fuel residue was pumped into <br /> three vacuum trucks and transported for disposal/recycling on hazardous waste <br /> manifests # 98097645 on 5-4-98, # 98097996 on 5-26-98 and # 98096103 on 5-26-98 <br /> After the sludge and waste water removal the two tanks were removed and inspected <br /> for signs of leakage and failure by a representative for the San Joaquin County <br /> Environmental Health Division The tanks were then crushed on site in the presence of <br /> the Montezuma Fire District and Environmental Health Division and loaded for transport <br /> to Forward Incorporated landfill by Lutrel trucking on two non- hazardous waste <br /> manifests #c 619502 and # c 619499 on 5-27-98 <br /> On 5-27-98, under the direction of Environmental Health Division, John Somers of <br /> ExcelChem Environmental Laboratories obtained twenty eight soil samples from soil <br /> stockpile to be composited and analyzed for TPH as let fuel, TPH as kerosene and TPH <br /> as gasoline/BTEX Due to suspected concrete hold down slabs beneath the two tanks it <br /> was deemed necessary to obtain an additional six samples from beneath the slabs In <br /> order to accomplish this task and meet OSHA Safety Guidelines, the hold-down slabs <br /> were completely exposed and excavation was enlarged and sloped to allow access to <br /> personnel for boring of six holes through the concrete slabs in order to obtain said <br /> samples <br />