Inspection Checklist:

  • This checklist is intended as a model. Locally developed checklists are acceptable as long as they are substantially equivalent and meet all applicable inspection checklist items.
  • For equipment not included in this Standard, follow the manufacturer recommended inspection/testing schedules and procedures.
  • The periodic AST Inspection is intended for monitoring the external AST condition and its containment structure. This visual inspection does not require a Certified Inspector. It shall be performed by an owner’s inspector per paragraph 4.1.2 of the standard.
  • Promptly remove standing water or liquid discovered in the primary tank, secondary containment area, interstice, or spill container. Before discharge to the environment, inspect the liquid for regulated products or other contaminants and dispose of it properly.
  • In order to comply with EPA SPCC (Spill Prevention, Control and Countermeasure) rules, a facility should regularly test liquid level sensing devices to ensure proper operation (40 CFR 112.8(c)(8)(v)).
  • * designates an item in a non-conformance status. This indicates that action is required to address a problem. Note that non-conforming items important to tank or containment integrity require evaluation by an engineer experienced in AST design, a Certified Inspector, or a tank manufacturer who will determine the corrective action. Note the non-conformance and corresponding corrective action in the comment section.
  • Retain the completed checklists for at least 36 months.
  • Complete this checklist on an annual basis, supplemental to the owner monthly-performed inspection checklists.
  • Note: If a change has occurred to the tank system or containment that may affect the SPCC plan, the condition should be evaluated against the current plan requirement by a Professional Engineer knowledgeable in SPCC development and implementation.

Please note: this checklist is to be used in conjunction with the SP001 Standard for the Inspection of Aboveground Storage Tanks and the utilization of the checklist alone does not constitute compliance with STI SP001.

Published Date

February 13, 2024

Revision Date

February 13, 2024



Resource Type

  • Standard


  • SP001