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Tank Assessment Page Tank Name: Final Neutralizer Tanks <br /> Tank ages: Purchased new, used 20 years <br /> Remaining service life- Estimated 5 years. <br /> 'I.'aak Construction: <br /> Shape: Cylindrical, flat bottom,open top. <br /> Orientation: Vertical. <br /> Location: Above Ground, inside building (no sun exposure). <br /> Material of Construction: High Density Crosslinked Polyethylene <br /> Thickness_ 0.228"Tk. 1,0.249"Tk. 2, 0.182"Tk. 3,measured 6" below the top, <br /> Lying an ultrasonic gage_ <br /> Lining material and thickness: NA <br /> Corrosion protection equipment: IIIA <br /> Other identifying features: Seamless, Orae'Piece Construction,Natural, <br /> rotationally molded. <br /> Piping and ancillary equipment(pumps): <br /> Piping Material of Construction: Poly Vinyl Chloride(PVC). <br /> Piping Diameter: 3 in, <br /> Pump location: in pre,n.eutralizer area. <br /> Pump type/capacity: centrifugal pump-40 gpm <br /> Pipe from the pre-neutralizer pump to the final neutralizer tank,26 il._ long, is <br /> entirely within the secondary containment area, and is hydrostatically tested at 6 <br /> psi semi-aimually. <br /> Material Storage: <br /> Materials and characteristics: Wastewater with pFi between 7 and 10. <br /> Specific Gravity: approx_ 1 <br /> Operating Capacity: 370 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:�u�7 <br /> Visual Inspection-- <br /> Tank <br /> nspection:Tank parameters at time of inspection: 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 tanks and affiliated piping and <br /> ancillary equipment did not reveal silms of leaks, corrosion, weld cracks or breaks, or <br /> scrapes in protective coating which may cause a release from the tank system, A. <br /> description of ail discrepancies noted during the visual inspection is included with this <br /> report. Initials: <br /> California Tank Lines, Inc. Final Neutralizer Tanks (3) <br />