1. (a) The owner or operator of a gasoline dispensing facility that is subject to this part shall perform stage I system testing as specified in Env-Or 504.07 through Env-Or 504.09 for all tanks:

   1. (1) At least once every 3 years; and

   2. (2) Within 30 days of:

      1. a. Failing to perform 2 consecutive monthly maintenance inspections in accordance with

         RSA 146-C:19, II, reprinted in Appendix D, in any given calendar year;

      2. b. Failing to perform the annual maintenance inspection as required by Env-Or 504.05(a); or
      3. c. Discovering that the stage I system is not functioning as specified in the applicable stage I certification reference standard in Env-Or 509.
2. (b) The owner or operator of each gasoline dispensing facility being tested or retested shall notify the department in writing at least 7 working days prior to performing the test of the planned test date, test time, and if applicable, the testing consultant being used.
3. (c) If the test is being performed pursuant to (a)(1) or (a)(2)c., above, the owner or operator shall schedule testing to be conducted on non-holiday weekdays between the hours of 8:00 a.m. and 4:00 p.m., unless otherwise arranged with the department in advance.
4. (d) Within 30 days of the completion of each test performed, the owner or operator of the gasoline dispensing facility being tested shall submit the test results to the department.

5. (e) The owner or operator of a gasoline dispensing facility that does not meet all of the criteria for a successful stage I system test shall:

   1. (1) Investigate the cause of the failure and determine if the system is leaking within 7 days of the initial test failure;
   2. (2) Undertake repairs or other modifications as necessary to address the reason(s) for the unsuccessful test in accordance with Env-Or 400;
   3. (3) Retest the stage I system after repairs to confirm the effectiveness of the repairs, provided that if the modifications performed to repair the facility have not altered a portion of the system that passed the original test, the retest may be performed only on those portions of the stage I system that failed the original test; and
   4. (4) Submit a written report to the department within 30 days of the initial test failure that describes the work performed, the repairs made, and other actions taken in response to the test failure.

6. (f) If a passing stage I system test is not achieved within 24 hours of the initial failed test:

   1. (1) The individual conducting a pressure decay test shall notify the owner or operator of a gasoline dispensing facility immediately of the failed test; and
   2. (2) The owner or operator of a gasoline dispensing facility shall report any failure of a pressure decay system to the department within 24 hours of receiving notice of the failed test.
7. (g) The owner or operator of a gasoline dispensing facility with a failed stage I system that is not repaired or replaced shall temporarily close the UST system within 7 days of the initial failure and permanently close the UST system within 30 days of the original failure in accordance with Env-Or 400.

Source. (See Revision Note #1 and Revision Note #2 at chapter heading for Env-Or 500) #10229, eff 11-17-12; ss by #13458, eff 10-7-23 (formerly Env-Or 504.07)