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Appendix F Periodic Integrity Testing Schedule (2009 revision) I. Per 40 cfr 112.7, it is a requirement to conduct periodic integrity testing of each tank (including primary and secondary containment chambers) as well as publish any methodology for conducting the tests at a minimum of ten years from date of installation. as stated in §§112.8(c)(6) and 112. 12(c)(6); it must be combined with another testing technique and must include the container's supports and foundations. Testing techniques include but are not limited to: ➢ Hydrostatic testing, ➢ Visual Inspection ➢ Radiographic testing,- Ultrasonic esting,Ultrasonic testing; ➢ Acoustic emissions testing;and ➢ Another system of non-destructive shell testing The Aboveground Storage Tanks, subject to testing have been tested on 12/15/2017 AND 4/13/2020 and the results are appended to this SPCC Plan. The methods for inspections & testing is a hybrid of the Manufacturer's protocols for tank testing, along with the inspection methods as outlined in STI-SP001 Standard for Tank Inspections. The protocol for ConVault tanks, as approved by the manufacturer, is a visual inspection of the interstitial space by insertion of dipstick or other similar device into secondary or use of a boroscope camera to view interstitial space & subsequent insertion of a hydrocarbon detection sensor into the interstitial space to determine the presence, if any, of hydrocarbons from fuel, which may determine an actual primary tank leak. If there is presence of water in interstitial space, the owner/operator is advised to purge. ConVaults have CRDM due to their being raised, and easily inspected underneath . All testing & inspection is conducted in accordance with the manufacturer requirements for inspection and/or testing. Inspection methods as articulated in STI SP001 inspection and testing methods may also be applied to the overall condition of the vessels and determination for continued suitability for usage. Testing methods which are in accordance with the US EPA requirements for testing are "any two of the methods listed above and highlighted in red. The methods applied are both the ultrasonic testing for steel thickness and the inspection of the secondary containment both visually and via hydrocarbon sensor. The SPCC Plan with this testing and inspection program herein establishes an interim schedule (in accordance with the introductory paragraph of §112.7 of 40CFR 112) that allows the facility to gather the baseline data to establish a 60