1. (1) Owners or operators of PSTs or any portion thereof which are to be permanently closed or undergo change-in-service must submit a permanent closure plan to the director at least 30-days before the closure of the PSTs; the permanent closure plan shall be submitted by the owner or operator as fulfillment of the 30-day permanent closure notification requirement in accordance with 40 CFR 280.71(a) for USTs.
2. (2) If a tank is to be removed as part of corrective action as allowed by 40 CFR 280 Subpart G, the owner or operator is not required to submit a closure plan, but must meet the requirements of 40 CFR 280.66(d) before any removal activity takes place, and must submit a corrective action plan as required by 40 CFR 280.66.

3. (3) The closure plan shall address applicable issues involved with permanent closure, change-in-service, or reuse of APSTs, including:

   1. (a) product removal;
   2. (b) sludge disposal;
   3. (c) vapor purging or inerting;
   4. (d) removing or securing and capping product piping;
   5. (e) removing vent lines or securing vent lines open;
   6. (f) tank cleaning;
   7. (g) environmental sampling;

   8. (h) contaminated soil and water management;

      1. (i) in-place tank disposal or tank removal;
   9. (j) transportation of tank;

   10. (k) permanent disposal; and

       1. (l) other disposal activities which may affect human health, human safety, or the environment.

4. (4) No PST shall be permanently closed or undergo change-in-service before the owner or operator receiving final approval of the submitted permanent tank closure plan by the director, except as outlined in Subsection R311-204-2(2).

   1. (a) closure plan approval is effective for a period of one year.
   2. (b) if the PST has not been permanently closed or undergone change-in-service as proposed within one year following approval from the director, the plan must be re-submitted for approval, unless otherwise approved by the director.
5. (5) Permanent closure plans shall be prepared using the current approved form according to guidance furnished by the director.
6. (6) The owner or operator shall ensure that the approved permanent closure plan and approval letter are on site during closure activities.
7. (7) Any deviation from or modification to an approved closure plan must be approved by the director before implementation, and must be submitted in writing to the director.
8. (8) The director must be notified at least three business days before the start of closure activities.

KEY: hazardous substances, petroleum, underground storage tanks

Date of Last Change: November 14, 2025

Notice of Continuation: March 8, 2022

Authorizing, and Implemented or Interpreted Law: 19-6-105; 19-6-402; 19-6-403