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Hazardous Waste Tank System Requirements for LQGs and Onsite Treatment Facilities —Page 8 of 14 (e.g., impressed current or sacrificial anodes); and electrical isolation devices such as insulating joints and flanges. ❑ For UST system components that are likely to be affected by vehicular traffic, a determination of design or operational measures that will protect the tank system against potential damage. [22CCR §66265.192(a)(4)] ❑ A certification by the PE worded exactly as indicated in Section G,below. [22CCR§66265.192(a)] The current assessment must be kept on file at the facility. [22CCR§66265.192(a)] 3. Replacement Parts or Components A written reassessment is not required for the replacement of the following identical or functionally equivalent tank system parts or components:$ [22CCR§66265.192(l)] ➢ Pumps (same type and capacity); ➢ Plumbing or piping components such as unions, elbows, tees and gaskets; ➢ Valves and check valves; ➢ Piping and valve hangers and supports. Approval from the CUPA must be obtained before installing any identical or functionally equivalent replacement tank systempart or component other than the items listed above. The tank system owner/ operator must provide the CUPA with the following information in writing so that a determination can be made as to whether or not the part(s) are identical or equivalent: [22CCR§66265.192(m)] ❑ Name, address, and EPA identification number of the facility; ❑ Date of planned replacement; ❑ Description part or component to be replaced; ❑ Description of the tank system and type of waste(s) handled; ❑ Description of how the part or component is identical or functionally equivalent to the part or component to be replaced. If the part(s) or component(s) are determined to be identical or functionally equivalent by the CUPA, a written reassessment is not required.$ If the part(s) or component(s) are not the identical or functionally equivalent items specified above, or the CUPA determines that other replacement parts or components are not identical or functionally equivalent, then a written reassessment as specified in 22 CCR §66265.192(k) is required. 4. Temporary Exemption — Owners/operators of new aboveground non-RCRA or RCRA-exempt tank systems whose design and installation have been approved by a local agency or agencies may, at the discretion of the CUPA, delay preparation of the written assessment specified in §66265.192(k) beyond the date the tank system is placed in service provided that all of the following requirements are met: [22CCR §66265.1920)] ❑ The tank system must have secondary containment capable of containing 100 percent of the contents of the tank and ancillary piping volume; [22CCR§66265.192(j)(1)] ❑ If the tank system is exposed to precipitation, the secondary containment system must have sufficient capacity, in addition to that required above, to contain infiltration from a 25-year, 24-hour rainfall event; [22CCR§66265.1920)(2)] 8 Even if a written assessment is not required, you may still be required to obtain a permit or approval from the local agency that regulates hazardous materials storage and/or the local Building Department prior to beginning such work. UN-047-8/14 www.unidoes.org Rev.01/07/08