Laserfiche WebLink
Tank Removal <br /> Continually monitor the tank to ensure that it contains an oxygen deficient <br /> atmosphere, 10% or less reading, and the combustible material <br /> concentration remains less than 20% of LEL. <br /> Continually monitor the site to ensure there are not any combustible vapors <br /> coming from an unknown source or disturbed line. <br /> Excavate the sides of the tank to free it. <br /> Remove the tank from the excavation. Label the tank in 2 inch minimum <br /> letters- "Tank contained (product type)", "Not Vapor Free"; "Do not reuse <br /> for storage of food or liquids for human or animal consumption", "date of <br /> removal (Mo/Day/Year)". <br /> Transport tank to an owner approved disposal/recycler site. Manifests for <br /> the tank transporter and disposal facility will also be supplied to the <br /> regulatory agencies. <br /> Samnlin2 <br /> Sampling is comprised of procedure, methodology, analysis and <br /> documentation. <br /> Procedure <br /> Unless directed otherwise, one sample will be taken for tanks less than <br /> 1000 gallons, two samples will be taken under the tank for tanks <br /> 1000-10000 gallons, one at each end of the tank, and samples will be taken <br /> at every 20 feet under appurtenant lines and fixtures. <br /> Sampling will be accomplished by bringing the desired material to be tested <br /> out of the hole with the backhoe. The material will then be packed into <br /> labeled (see methodology) glass jars with teflon lids insuring that there is <br /> no head space. The samples will then be documented on the site sketch (by <br /> label) and submitted to the lab to be analyzed (see analysis). <br /> If it is apparent that the tank has contaminated a fair amount of the soil, <br /> excavation and sampling will continue at the direction of the owner. <br />