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Pg.2 of 4 Quick Truck Repair RECEIVED rCcD 1950 Miner Avenue Stockton,CA 95205 MAR 13 2015 TANK ASSESSMENT WASTE OIL HOLDING AST ENVIRONMENTAL January 19, 2015 Inspection HFA7W n;:PhQTAAcMT This assessment is for a 1,000 GA Single Wall Steel Horizontal Cylindrical AST containing Waste Oil located in the southeastern interior of QuickTruck Repair's shop building at t 1950 Miner Avenue Stockton, CA. The facility services customer's vehicles including draining and replacing motor oil. Due to business volume they are classified as a "Large Quantity Generator".Tank inspection was by Daniel K. Barber, RCE California and Certified Steel Tank Institute Inspector. Date of Inspection:January 19, 2015, February 14, 2015 Owner Contact: Mr. Rajinder Singh, Global Freight Experts, (209) 547-9210 or (510)557 6988 (cell). CONTAINMENT ASSESSMENT The single wall steel AST is located in an open steel pan secondary containment resting directly on an assumed 6+inch concrete floor located under the shop's covered roof. Labeling, indicates the horizontal cylindrical tank was manufactured by Perkins Welding with dimensions of 12 Ffx 47%: IN has a nominal capacity of 1,000 GA.The open steel pan secondary containment of the waste oil AST provides capacity for failure of the 1,000 GA"hazardous waste"containing primary tank. The subject waste oil AST sits directly on the pan floor,which in return is in direct contact with the Portland cement concrete floor.There is no visible path in the event of leakage between the pan and the concrete, however, any leakage would most likely appear at the pan's perimeter.Additionally, ongoing regular monitoring of the secondary containment's open pan will alert the operator to failure of the primary tank.The plugged secondary containment was dry at my inspection. Insertion of 2-3 inch channel steel skids(flanges down) providing about 0.14 feet of clearance under the pan above the paved pad, would assure there is a Continuous Release Detection Method (CRDM). NPI Threaded openings available along the top of the tank include a 4" opening 1 "with a normal vent, a plugged 1 %"opening, and 2 @ 2" openings. Used oil,from the adjacent"drive over mechanic's pit" is collected in a track mounted drain pan and is periodically transferred into the waste oil AST via a suction line with a pneumatic double diaphragm pump mounted at the north end of the secondary containment pan.There is no passive method to prevent overfilling in the event of operator inattention, however,the quantities transferred are defined, periodic and view of the contents is immediate and convenient.With an awareness of the tank's waste oil level,the transfers do not threaten over filling into the secondary containment pan between reclamation pickups. Daily observations for visible signs of leakage are to be recorded by Quick Truck Repair's staff. Records are to be maintained on site for 3 years.