1. (a) The owner or operator shall inspect, where present, at least once each operating day, data gathered from monitoring and leak detection equipment, for example, pressure or temperature gauges, monitoring wells, to ensure that the tank system is being operated according to its design.

   Note: Subsection R315-265-15(c) requires the owner or operator to remedy any deterioration or malfunction he finds. Section R315-265-196 requires the owner or operator to notify the Director within 24 hours of confirming a release. Also, 40 CFR part 302 may require the owner or operator to notify the National Response Center of a release.

2. (b) Except as noted under Subsection R315-265-195(c), the owner or operator shall inspect at least once each operating day:
3. (1) Overfill/spill control equipment, for example, waste-feed cutoff systems, bypass systems, and drainage systems, to ensure that it is in good working order;
4. (2) Above ground portions of the tank system, if any, to detect corrosion or releases of waste; and

5. (3) The construction materials and the area immediately surrounding the externally accessible portion of the tank system, including the secondary containment system, for example, dikes, to detect erosion or signs of releases of hazardous waste, for example, wet spots, dead vegetation.

   1. (c) Owners or operators of tank systems that either use leak detection equipment to alert facility personnel to leaks, or implement established workplace practices to ensure leaks are promptly identified, shall inspect at least weekly those areas described in Subsections R315-265-195(b)(1) through (3). Use of the alternate inspection schedule shall be documented in the facility's operating record. This documentation shall include a description of the established workplace practices at the facility.
   2. (d) (Reserved)
   3. (e) Ancillary equipment that is not provided with secondary containment, as described in Subsections R315-265-193(f)(1) through (4), shall be inspected at least once each operating day.
   4. (f) The owner or operator shall inspect cathodic protection systems, if present, according to, at a minimum, the following schedule to ensure that they are functioning properly:
6. (1) The proper operation of the cathodic protection system shall be confirmed within six months after initial installation, and annually thereafter; and

7. (2) All sources of impressed current shall be inspected and/or tested, as appropriate, at least bimonthly, for example, every other month.

   1. (g) The owner or operator shall document in the operating record of the facility an inspection of those items in Subsections R315-265-195(a) and (b).

   Note: The practices described in the National Association of Corrosion Engineers (NACE) standard, "Recommended Practice (RP-02-85)-Control of External Corrosion on Metallic Buried, Partially Buried, or Submerged Liquid Storage Systems," and the American Petroleum Institute (API) Publication 1632, "Cathodic Protection of Underground Petroleum Storage Tanks and Piping Systems," may be used, where applicable, as guidelines in maintaining and inspecting cathodic protection systems.

KEY: hazardous waste, TSD facilities, interim status

Date of Last Change: November 17, 2025

Notice of Continuation: December 11, 2025

Authorizing, and Implemented or Interpreted Law: 19-6-105; 19-6-106