Authority: IC 13-14-8-7; IC 13-15; IC 13-19-3

Affected: IC 13-18; IC 13-20; IC 36-9-30

Sec. 10. The owner, operator, or permittee must develop and implement a program to detect and assess liquids that have leaked through the liner system into the leak detection zone. The program must be based on a leak detection plan submitted for approval to the commissioner at the time of permit application in accordance with section 1(a)(14) of this rule. The leak detection plan must include the following information:

1. (1) The quantity of liquids, in gallons per acre per day, expected to be collected from the leak detection zone of the liner system throughout the active life, closure, and post-closure periods.
2. (2) The expected rate of change in liquid quantity collected from the leak detection zone of the liner system.

3. (3) The expected nature of the liquids with regard to:

   1. (A) the chemical constituents;
   2. (B) the range in concentration of constituents;
   3. (C) the range in pH of the liquids; and
   4. (D) any other information necessary to characterize the liquids, as determined by the commissioner.
4. (4) The frequency with which the owner, operator, or permittee will collect and analyze samples from the leak detection zone of the liner system throughout the active life, closure, and post-closure periods. Collection and analysis of samples from the leak detection zone must be done at least semiannually.

5. (5) A proposed action leakage rate. The proposed action leakage rate must not exceed the maximum design flow rate that the leak detection zone can transmit so that the fluid head does not exceed one (1) foot. The action leakage rate must include a minimum factor safety of two (2) to allow for:

   1. (A) uncertainties in the design, construction, and operation of the liner system; and
   2. (B) uncertainties in the likelihood, amounts, and sources of other liquids entering the leak detection zone.

(Solid Waste Management Division; 329 IAC 10-15-10; filed Mar 19, 1998, 11:07 a.m.: 21 IR 2768; errata filed Jun 10, 1998, 9:23 a.m.: 21 IR 3939; readopted filed Oct 16, 2024, 11:58 a.m.: 20241113-IR-329230812RFA)