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Tank Assessment Page 'Tank Name: Primary Neutralizer Tank <br /> Tank ages: Purchased new in 2016. <br /> Remaining service life: Estimated 20 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 0.5 ins. thick(supplied by <br /> fabricator—can be measured with ultrasonic gage). <br /> Lining material and thickness:NA <br /> Corrosion protection equipment: NA <br /> Structural support: None. <br /> Other identifying features: Seamless,One Piece Construction,Natural, <br /> rotationally molded. <br /> Flows to secondary neutralizer which is equipped with level control to prevent <br /> overflow. <br /> Piping and ancillary equipment(pumps): <br /> Piping Material of Construction: Poly Vinyl Chloride(PVC). <br /> Piping Diameter: 3 in. <br /> Pump location: after secondary neutralizer tank. <br /> Pump type/capacity: centrifugal pump-40 gpm <br /> Material Storage: <br /> Materials and characteristics: Wastewater with pH between 2 and 12. <br /> Spccific Gravity: approx. 1 <br /> Operating Capacity: 500 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 /> Initials: N17 <br /> Visual Inspection: <br /> Tank parameters at time of inspection:three in use. <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: A5 <br /> California Tank Lines, Inc. Wastewater Processing Tanks(3) <br />