N.Y. Comp. Codes R. & Regs. tit. 6, § 383-10.5 – Monitoring of disposal units.

(a) The applicant must submit a disposal unit monitoring plan as part of the complete permit application.
(b) The permittee must establish and conduct a disposal unit monitoring program as required by this section and in accordance with the disposal unit monitoring plan approved by the department in the permit. The permittee must begin the disposal unit monitoring program when construction of the first disposal unit is completed and, except for underground mined repositories, must continue it until the end of the institutional control period. For underground mined repositories, disposal unit monitoring must be conducted during the operation period, and, as necessary to safely perform facility closure, during the closure period.
(c) During the operation period, the disposal unit monitoring program must include provisions for:
1. (1) detecting infiltration of water into the disposal units;
2. (2) sampling and analysis, for the presence of radioactive materials and hazardous components, of any liquids discharged from the disposal units or collected in the internal drainage system or the external foundation drainage system; and
3. (3) monitoring for the generation of methane and other gases within the disposal units.
(d) During the closure, post-closure, and institutional control period, the disposal unit monitoring program must provide for the detection of significant releases of radioactive material to the environment. In addition, the disposal unit monitoring program must include the provisions described in paragraphs (c)(1)-(3) of this section to the extent that such provisions are feasible and will not adversely affect the ability of the land disposal facility to meet the performance objectives.
(e) A separate and independent monitoring system must be provided for each disposal unit.
(f) Any liquids discharged from the disposal units or collected in the internal leachate collection system or the external foundation drainage system must be treated as necessary to comply with section 382.11 of this Title and any other required permits.
(g) The permittee must, at least once a year, review the plan for the disposal unit monitoring program and revise it as necessary, subject to the approval of the department. At minimum, the plan must be revised when the permittee or the department determines that:
1. (1) the disposal unit designs or operations have changed and the disposal unit monitoring program is no longer appropriate for the changed conditions;
2. (2) the disposal unit monitoring program is no longer sufficient to accurately demonstrate that the performance objectives are being met; or
3. (3) the disposal unit monitoring program no longer meets the requirements of this Subpart.