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0 0 The piping system inside the Truck Repair shop is black steel with treaded joints. The piping ranges from 1"to 1-1/2"and is routed from a lube-pit to the storage tank along the walls and ceiling of the Truck Repair. One pump is included in the assessment. The pump conveys used oil from the western lube-pit to the storage tank. The air diaphragm pump is mounted on a steel frame secured to the Truck Repair lube-pit wall and has wetted materials(neoprene diaphragms) compatible with used oil. (E)sketch or drawing of tank including dimensions. Manufacturer's drawings are not available for review. However, as-installed drawings have been prepared and included in Attachment C(Location Plan and Detail;Structural Detail). The drawings are dimensioned, and include openings for the tank. (k) (3) documented age of the tank system Age— 19 years Tank was installed in 1992 with the construction of the Distribution Center. (k) (4)description and evaluation of the adequacy of any leak detection equipment; Assessment Results=Adequate The leak detection used for the tank is visual observations. The tank is located within a concrete block wall containment structure and leaks from the tank will be easily identifiable within the containment structure. The above ground piping with threaded socket joints is visually inspected daily(considering the pipeline is routed overhead within the work area of the Truck Repair and leaks will be readily identified),thus, complying with the secondary containment exemption specified in 66265.193 "Containment and Detection of Releases"section(f)— "(1)for above ground piping..."and(2) for ...joints that are visually inspected for leaks on a daily basis". (k) (5) description and evaluation of any corrosion protection equipment; There is no corrosion equipment associated with the tank systems(e.g. sacrificial anodes or impressed current). As indicated in other areas of the assessment, equipment component material is compatible and corrosion resistant to the used oil in contact with the component(s). Pipe supports are primarily zinc-coated unistruts. The tank is factory coated to protect the outer steel wall from corrosion. (k) (6)description and evaluation of any spill prevention or overfill equipment; Assessment Results=Adequate The used oil tank has a local level indicator gauge.An operator can visually observe the oil level in the tank. Oil is pumped to the oil tank in small batches(55-gal or less at any Tank System Assessment Page 3 June 2011