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• • Pg.3 of 4 <br /> TANK ASSESSMENT Quick Truck Repair, 1950 Miner Avenue,Stockton,CA <br /> Waste Oil Holding Tank Inspection 19 Jan 2015, D.K. Barber PE C 21,210, exp 9130/15 <br /> Est.Tank Age: > 29 years Certified Steel Tank Institute, Level II, AST AC18709 <br /> Est.Tank Life of Service: 40 years Steel AST <br /> Perkins <br /> 1,000 GA single wall steel Horizontal Cylindrical AST, Waste Oil Storage,q` Mfg.: I , <br /> Welding Works, Sacramento, CA <br /> Shape: Cylindrical <br /> Orientation: Horizontal Reference Sketch NON <br /> Diameter 47.5 IN, Length 144 IN <br /> Location: Above ground on interior PC concrete shop floor in secondary containment <br /> Thickness & method of determination: <br /> UL tag removed, historic production by Perkins Welding Works <br /> soma <br /> Primary Shell 12 gauge steel (0.105 in) <br /> Secondary Pan Shell 12 gauge steel (0.105 in) <br /> Lining material &thickness: None <br /> Corrosion Protection Equipment: None, exterior protective coating in good condition <br /> Proposed Structural Support: 4 @Flat 2 IN Steel Channels Non-bolted Anchorage <br /> AST needs to elevated — 1.5 IN above the concrete floor. <br /> Other identifying features: <br /> Chemical compatibility findings:The materials noted in the material;storage section described above are <br /> compatible with the material of construction or lining material noted in the tank construction section above. <br /> Piping &Ancillary Equipment (pumps) affimm <br /> Piping Material of Construction: none <br /> Piping Size: 1" <br /> Pump Location: elevate at the south end of secondary pan <br /> Pump type/ Capacity: ARO 666 367 GA 1061 Ingersol Rand Material Storage Pneumatic <br /> Double Diaphragm w/ excellent condition 1 " hydraulic hose, 1.5 Steel suction pipe <20 Ft <br /> under shop floor, drains back to drain pan, est. 40-50 GPM <br /> Material & Characteristics: Waste Oil Used Engine Oil, ATF, Hydraulic, Gear Oil , <br /> Non-RCRA Hazardous Waste, Class III combustible liquid <br /> Specific Gravity: SpG 0.85 - 0.91 assume 0.91 <br /> Operating Capacity : Gross 1,000 GA Limit to 90% or 900 GA for Operating Maximum <br /> Visual Inspection <br /> Tank parameters at time of inspection: Partially full of waste oil <br /> Acute visual evidence of leaks: None <br /> Condition of interior surfaces: Condensate corrosion minimal <br /> Interstitial volume (basin pan)was dry, drain plug in place <br /> Condition of exterior surfaces: Paint Fair condition, metal exposed. <br /> Condition of fittings at tank: Good condition, all topside, steel, no EVR <br /> Visual Inspection findings:A visual inspection of the tank and its affiliated pumps,pumping and ancillary <br /> coating <br /> equipment did not reveal signs of leaks,corrosion,wald cracks or breaks,or scraps in the p .__�{ <br /> which may contribute to the likelihood of a release occurrino from the tank system. A descri 1 <br /> MAR 13 2015 (� <br /> ENVIRONMENTAL <br /> IaCIf'IJ MCDADT441171I1 <br />