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Tank Assessment page Tank Name: Cone Bottom WW Tank <br />Tank ages: Purchased new in 2016, <br />Remaining service life: Estimated 20 years, <br />Tank Construction: <br />Shape: Cyiindrical, cone ibottfim, <br />Orientation: Vertical_ <br />Location: Above GrtNmd_ <br />Material of Construction: Him Uk-nsiiy Linear Polyethylene <br />Thickness: 0.537" measured ti" below the top of the tank; using an ultrasonic gage. hilt tank thickness <br />measurements «►ere made by .a technician with 20 yrs. experience using an ultrasonic gage to measure <br />thickness of DOT cargo tank, for the Ilighway patrol. The gage used III this case was a TM8810 with 5 <br />MHz 8mm dual elemerd probe_ <br />.fining material and thicknes.S: NIA <br />Cacrosion protection equipmtnt: NA <br />Strwluurral support: Steel support stand for cone bottom tank. <br />Other identifying features: Seamless. One Piece Construction, Natural, rotationally molded. <br />Equipped with level control te, prevent overflow (stops feed on high level). <br />Piping and anciiiary equipment Cpurn,ps j: <br />Piping Material of ConstructiGn.- Poly Vinyl Chloride (PVC). <br />Piping Diameter: 3 in_ <br />Purnp location: within secondary containment area. <br />Pump type/capacity_ hose pump - 40 gpm <br />Feed pipes in 90 ft. long irnpcnaous trench from food grade wash rack, and in cont. area from chemical <br />wash Fads_, arc visually inonitored while system is in operation. In addition, the impervious trench is <br />equipped with a fevei indicator at the low point to detect leaks, as are the pre -neutralizer (area 1) and <br />final neutralizer areas_ All pipes are hydrostatically tested at 6 psi semi-annualiy. <br />EvMatenal Storage: <br />Ma+iffWs and rharactenstics: Wastewater with pH[ between l and 13. <br />Specific CrravitV- approx i <br />Operating Capazit _ 700 goons. <br />Chemical compatibility findings: The materials identified above are compatible for contact with or proximity <br />to ttte equipment, tank or tank syste:r+ in this wLw- sn3ent_ Initials:,`,' _, <br />Visual Inspecbovx <br />Tank pararnews at time of inspection: three in use. <br />Acute visual evidence of leaks: none. <br />Co"tion of interior swface: goo& <br />Condition of exterior surface: good. <br />Condition ofn=les, flanges, fittings at tank: good. <br />Condition of'piping: good. <br />Visual Inspection fundings: A visualinspection of the tank and its of diated pumps, piping and ancillary <br />equipment did not reveai signs o€'leaks, corrosion, weld cracks or breaks, or scrapes in protective coating which <br />may cause a release from the tank system. A description of all discrepancies noted during the visual inspection <br />is included with this report. Initials_ dI/ <br />California Tarzk Lines- inc. Wastewater Processing Tanks {3,. <br />