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(i)Any corrosion holes shall be plugged. <br /> 0)The tank shall be labeled with its former contents,present vapor state, vapor freeing <br /> method, and a warning against reuse. <br /> (k)The tank shall be removed from the site promptly, preferably the same day,but within 72 <br /> hours. <br /> The tank removal contractor will follow the procedures in API Recommended Practice for tank <br /> removal and the NFPA Standard for removal and disposal. <br /> The SJCEHD and CVRWQCB inspectors will direct soil and groundwater sampling immediately <br /> following the tank removals. ROKEN anticipates collection of two (2) soil samples from below <br /> each of the four(4)USTs. Each sample will be submitted to a state certified laboratory for the <br /> following analyzes: <br /> EPA Method 8260b-VOCs,TPH as Gasoline, 7 fuel additives and lead scavengers <br /> EPA Method 8015M-TPH as Diesel and Motor Oil <br /> EPA Method 6010 - LUFT 5 Metals (Cadmium, Chromium,Nickel, Lead,Zinc) <br /> EPA Method 8270 - Semi Volatile Organic Compounds <br /> The tanks will be transported and disposed at the ECI Richmond, California Facility or other <br /> permitted facility. <br /> Within 30 days following the tank removal date,ROKEN will submit the following documentation: <br /> Laboratory reports for analytical results with chain of custody and QA/QC. <br /> UST Tracking Record Sheet and Tank Hazardous Waste Manifest(s). <br /> Tank Closure Certification Form(DTSC Form 1249). <br /> Hazardous waste manifests for piping, rinsate,residual fuel,or waste oil receipt. <br /> Backfill Excavation certificate as required by San Joaquin County and City of Stockton <br /> Building Departments. <br /> Data collected to date has indicated the probability that the USTs and/or adjacent unsaturated soil <br /> in the vicinity of the USTs contain elevated concentrations of petroleum hydrocarbons that pose <br /> a potential impact to groundwater at the site, and may be contributing to the elevated <br /> concentrations of petroleum hydrocarbons detected in groundwater in the vicinity. In order to <br /> reduce impacts to groundwater, once the USTs are removed, soil from the vicinity of the USTs <br /> that contains elevated concentrations of petroleum hydrocarbons will be excavated to the extent <br /> possible and practical. <br /> 8 <br />