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TOWN & COUNTRY CONTRACTORS, INC. WORK PLAN equipment is located on the site . Stockpiles will be laid on top of impervious material and covered with plastic , waddles and sandbags . 7 . Tank Removal , Storage , and Disposal Hazardous material will be removed from tank and piping prior to tank removal and properly managed . Before offsite transport the tank will be verified that the interior atmosphere of the tank is less than 10 % of the LEL . Final cleaning of UST ' s and other appurtenances will be done by triple - rinsing using a high - pressure , low water volume washer to remove any remaining loose scale and tank bottom . Rinsate will be collected with portable pump and transferred to appropriate storage containers . Rinsing will continue via water spray until all loose scale and sludge is removed and sheen is no longer visible in the effluent stream . Materials generated as the result of the decontamination of tanks will be manifested as hazardous wastes . The UST ' s will be removed and piping will be removed and hauled by a licensed hazardous waste transporter Nieto and Sons Trucking , 1281 Brea Canyon , Brea CA 92821 to a permitted hazardous waste facility ; Republic Services Forward Inc , 999 S Austin Rd , Manteca , California . Sketches of each side of the tank will be drawn showing areas of corrosion , rust , dents , hoes or damages if present . The drawings will also show the dimensions of the tank and the locations of the vent and fill pipes , as well as other pertinent tank features . 8 . Confirmation Sampling Prior to removal of the tank , measuring of the 02 levels will take place immediately . Upon the excavation and removal of the UST ' s , soil samples will be collected to confirm contaminated/uncontaminated soil . Additional soil sample will be taken in UDC and piping area . Soil sampling will be taken immediately beneath the removed portion of the tank , a minimum of two feet into the native material at each end of the tank in accordance with section 2649 Soil samples will be taken at every 20 linear feet along piping runs and as directed by the inspector overseeing the closure . It is determined by the agency to waive the requirements for analysis of all constituents , breakdown or transformation products can be determined if there will be a significant threat to water quality or the environment . All excavated soil will be stock piled on impervious material and covered with plastic , waddles and sandbags . All soil appearing to be contaminated with petroleum hydrocarbons or similar contaminants will be stored separately from soil not appearing to be contaminated . All contaminated soil will be covered with a material impervious to inclement weather, and will be handled , transported and disposed of pursuant to applicable sections of the Health and Safety Code . Contaminated soil may be remediated on site with prior approval from Health Care Services Agency and the owner . Sampling methods will be taken by forcing a clean glass and/or sealed container into the soil down four feet at each location directed by the SJCEHD or field inspector . The soil sample is then cover at both ends with aluminum foil , capped with its plastic cap and taped on both sides with plastic tape . The samples are then transported in ice chests on ice to the laboratory for analysis . This is the only method permitted by the laboratory as required under the checklist for soil sampling mandated by the state . The recommended minimum verification analysis will follow Table 2 (attached ) .