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3 <br /> Tank Assessment Page Tank Name: Wastewater Storage Tanks <br /> Tank ages: Approx. 12 years. <br /> Remaining service life: Estimated 13 years. <br /> Tank Construction: <br /> Shape: Cylindrical,flat bottom. <br /> Orientation: Vertical. <br /> Location: Above Ground. <br /> Material of Construction: High Density Crosslinked Polyethylene. <br /> Thickness: per ASTM D1998-93 Section 6.1; 1.5 to 0.75 ins. thick <br /> Lining material and thickness: NA <br /> Corrosion protection equipment: NA <br /> Structural support: NA <br /> Other identifying features: Seamless, One Piece Construction,Natural, <br /> rotationally molded. <br /> Piping and ancillary equipment(pumps): <br /> Piping Material of Construction: Poly Vinyl Chloride(PVC). <br /> Piping Diameter: 2 in. <br /> Pump location: within secondary containment area. <br /> Pump type/capacity: centrifugal, 20 gpm. <br /> Material Storage: <br /> Materials and characteristics: Wastewater with pH between 3 and 10. <br /> Specific Gravity: approx. 1 <br /> Operating Capacity: 10,300 gallons. <br /> Chemical compatibility findings: The materials identified above are compatible for <br /> contact with or proximity to the equipment,tank or tank system in this assessment. <br /> I 't' s: <br /> Visual Inspection: <br /> Tank parameters at time of inspection: empty. <br /> Acute visual evidence of leaks: none. <br /> Condition of interior surface: good. <br /> Condition of exterior surface: good. <br /> Condition of nozzles, flanges, fittings at tank: good. <br /> Condition of piping: good. <br /> Visual Inspection findings: A visual inspection of the tank and its affiliated pumps, <br /> piping and ancillary equipment did not reveal signs of leaks, corrosion,weld cracks or <br /> breaks, or scrapes in protective coating which may cause a release from the tank system. <br /> A description of all discrepancies noted during the visual inspection is included with this <br /> report. Initials:W X /2 <br /> Superior Tank Wash Wastewater Storage Tanks <br />