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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 />Specific 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: W.? <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 />