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Spill Prevention,Control,and Countermeasures Plan <br /> City of Ripon <br /> Fueling Station <br /> Page 10 <br /> 1.5 PRACTICABILITY OF SECONDARY CONTAINMENT(40 CFR 112.7(d)) <br /> Management has determined that secondary containment is practicable at this Facility. <br /> 1.6 INSPECTION RECORDS [40 CFR 112.7(e)] <br /> The Facility has adopted the Steel Tank Institute(STI)standard'to establish steel AST integrity inspection <br /> intervals. As such, a tank's category is determined by the type, configuration, and protection equipment <br /> installed. Generally,tanks with spill control (i.e. secondary containment) and continuous release detection <br /> methods (CRDM) such as an elevated tank are Category I tanks (least risk). Those with spill control and <br /> without CRDM are considered Category II tanks. Tanks without spill control or CRDM are considered <br /> Category III tanks(most risk).A reference of the inspection type required for Facility containers is provided <br /> in Table 3.A Facility AST Inventory is included in Appendix 6. <br /> Table 3—Visual and Non-Destructive Container Shell Inspection Requirements <br /> Capacity AST <br /> Container Type (Gallons) CategoryA Inspection Type <br /> 55- 1,100 1, 11 Visual Inspections by trained Facility Personnel <br /> III Non-Destructive Shell Inspection by a Certified <br /> Inspector <br /> Shop Fabricated 1,101 —5,000 1 Visual Inspections by trained Facility Personnel <br /> AST II,III Non-Destructive Shell Inspection by a Certified <br /> Inspector <br /> Visual Inspections by trained Facility Personnel <br /> 5,001 —50,000 I,II,111 and Non-Destructive Shell Inspection by a <br /> Certified Inspector <br /> Portable Containers >55 - Visual Inspections by trained Facility Personnel <br /> Note <br /> A:Tank category designations are from STI's SP001 -6th Edition Inspection Standard,January 2018. <br /> Inspection type and frequency is initially determined by an AST's Category and total capacity. The <br /> inspection schedule for Facility containers is provided in Table 4. Tanks T1 and T2 require formal external <br /> non-destructive integrity testing by a certified inspector every 20 years. Facility personnel indicated that <br /> tanks T1 and T2 were installed in 2006; therefore, not due for external inspection until 2026. Prior Non- <br /> Destructive Shell Inspections by a Certified Inspector had not been conducted or scheduled at the time of <br /> the SPCC Plan update. <br /> s Steel Tank Institute, Standard for the Inspection of Aboveground Storage Tanks, SP001, - 6th Edition Inspection Standard, <br /> January 2018. <br /> �i� CONDOR <br />