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STI External Tank Inspection [_ <br /> UPRR French Camp <br /> Tank No.TNKD-0829 <br /> Antea Group Project No. UP03061T a nte6g ro u p <br /> Cathodic Protection-Corrosion N/A <br /> protection system tested, <br /> maintained,and operational in <br /> accordance with the <br /> requirements of Comm 10.520? <br /> Do the Containment Structures No <br /> exhibit any delamination of <br /> caulk,any holes,washout, <br /> degradation,corrosion, leakage, <br /> paint failure,or tank settlement? <br /> • • <br /> Type of Foundation Concrete foundation circular,4.5"thick <br /> Foundation settlement or No <br /> washout? <br /> Corrosion,cracking,or paint Yes—Minor rusting on anchor plate at NW corner and <br /> failure of supports? Rusting on manway cover from bolts <br /> Water drains away from tank? Yes <br /> Concrete pad/ring wall cracking No <br /> or spalling? <br /> Grounding/bonding straps No grounding <br /> secured and in good condition? <br /> TANK SECONDARY CONTAINMENT: <br /> Tank Secondary Containment Concrete dike <br /> Containment size 16'x 28'x 4' Sump with value (N.C.)to WWTP basin <br /> Freeboard 25 yr/24 hr containment capacity= 10,300 gals <br /> (13,405 gals—754 gals(freeboard)-2,350 gals(2nd tank displacement) _ <br /> 10,300 <br /> Number of Tanks in Containment 2 Diesel & Used Oil (4,000 gals) <br /> Largest Tank Capacity 10,000 gallons <br /> PIPING CONSTRUCTION <br /> Piping Diameter(inflow) 3.5 inches <br /> Piping Type(inflow)-Placement Above ground <br /> Piping Type(inflow)—Material Coated steel with silver paint <br /> Piping Type(inflow)—Secondary Concrete—Dike and pump skid curbing—sealed through dike wall <br /> Containment <br /> Piping Diameter(outflow) 2.0 inches <br /> Piping Type(outflow)-Placement Above ground <br /> Piping Type(outflow)-Material Coated steel painted with silver paint <br /> Piping Type(outflow)-Secondary Concrete dike and pump skid curbing,then pipe trench to dispenser <br /> Containment <br /> Piping System Type Suction <br /> Piping Corrosion Protection Painted <br /> Piping supports—Material? Steel,good condition <br /> Corrosion?Wear? <br /> Piping Loop System No <br /> Piping Release Detection Monthly visual inspection <br /> XINOGEN� <br /> 2 us_anteagroup.com <br />