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regular schedule of integrity testing in accordance with §§112.8(c)(6) and 112.12(c)(6), and applies ONLY to the three (3) ConVaultTanks. The methodology for testing these two tanks is as follows: Opening the secondary containment inspection port, a hydrocarbon sensor is inserted into the secondary to ascertain whether or not any product is present, which could indicate a leak in the primary vessel. (No leaks detected in either tank). Hydrocarbon device is OMNTEC BOA. A visual inspection is then undertaken into the secondary containment, with a photograph as a record of the secondary containment area, to verify that no hydrocarbon product is in the secondary containment area. As is normal with technology, other or newer devices may be utilized for either or both Hydrocarbon detection or steel thickness measurements. This section is not designed to limit the determination of measuring devices applied for testing purposes. These tanks undergo the same inspection protocol for visual & hydrocarbon sensor detection for product in secondary containment area; a steel thickness measurement to assure that the steel thickness would maintain a level in accordance with UL142 steel thickness construction standards as is the industry standard is not practicable for a concrete clad tank. This protocol is in accordance with 40 CFR 112.8(c)(6) EPA guidelines for tank testing and is adopted herein for testing purposes in this SPCC Plan After inspections and tank integrity testing, the overall condition of the tanks is acceptable although ongoing corrosion protection should be conducted; moreover, the frequency of periodic integrity for all seven ASTs is established as 5 years from the most-recent periodic integrity test (tentatively scheduled for April 13, 2025). STI-SP0O1 The US EPA has accepted the STI-SP001 as an industry standard for inspection- testing of ASTs such as the two fuel tanks. The three ConVault tanks in the yard currently have manual monitoring to locate leaks, if any, in the secondary containment of each Fuel Tank. Additionally, these tanks are raised and have Continuous Release Detection Monitoring via visual inspections beneath the tanks. As such, these tanks are not scheduled to be "tested" under SP001 protocols until 5 years after their installation, in accordance with the STI-SP001 Inspection requirements. The STI-SP001 inspection/test was not chosen for this particular inspection under this SPCC Plan. As such, the schedule for testing may not be in accordance with STI-SP001. Inspection methods as articulated in STI SP001 inspection and testing methods 60