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Dart Container Corporation <br />In-Service AST Inspection Report <br />Formal External Inspection of AST-1 <br />Page 2 <br /> <br /> <br /> <br />j. Emergency relief vents (ERVs) <br />k. Release prevention barriers <br />l. Spill control systems <br /> <br />2. Inspect the Tank based on its construction, per the following: <br />a. Single-wall tank of a horizontal cylindrical design, elevated above the ground. <br /> <br />3.0 GENERAL SITE AND TANK DESCRIPTION <br />Principal Facility activity is the production of plastic containers and includes a private diesel cardlock fuel <br />station for Facility equipment and over the road trucks. The Tank is used for storage of diesel in support <br />of the Facility fuel station. Refer to Photo 1 and Photo 2 for general exterior conditions. Exterior Tank <br />diameter was 96 inches (8 feet) with an overall length of 326 inches (27 feet, 2 inches). The Tank <br />appeared to be shop-fabricated and was in service at the time of inspection. Refer to Figure 1 for a <br />diagram of the Tank. Basic characteristics of the Tank are provided in Table 1. <br />Table 1 – Tank Description <br />Tank ID/Location Size <br />(Gallons) Tank Construction Material Manway <br />Access <br />Product <br />Stored <br />UL No: 604065 <br />*TANK No: AST-1 <br />(Outdoors) <br />10,000 Single-Wall, Steel Tank Yes Diesel <br />* Tank identification from the SPCC Plan. <br /> <br />The following details were observed as part of the overall tank inspection. The provided tank inspection <br />summary follows the STI Formal External Inspection (FEI) criteria. The FEI items for the Tank are <br />described below: <br /> <br />3.1 FORMAL EXTERNAL INSPECTION <br />1. General <br />1.1. A FEI was performed by Jordan Johnson, an STI Certified Inspector (AST Inspector No. <br />AST-T10388). <br />1.2. The Tank currently functions as storage for diesel, a flammable material with an <br />approximate flash point of 60 °C or 140 °F. Given the characteristics of the material <br />stored and the construction of the Tank, the inspector referenced the STI SP001 tank <br />inspection standard as a guideline. <br />1.3. The previous annual inspection reports and monthly inspections were provided to the <br />inspector for review. The Client was not aware of previous formal inspection reports. <br />1.4. The Tank manufacturer’s nameplate and Underwriters Laboratory (UL) nameplate were <br />observed on the east end of the Tank (Photo 3). The Tank’s manufacture date or <br />construction standard were not included on the label. The inspector referenced UL 142 as <br />the Tank’s construction standard for the inspection. <br />1.5. The Tank was inspected using STI SP001 as the applicable industry standard. <br />1.6. The Tank foundation was inspected for indications of settlement, cracking, exposed <br />rebar, and general disrepair. Hairline cracks in the concrete were observed but did not <br />appear to have compromised the integrity of the concrete. In general, the foundation <br />appeared to be intact.