Section 18 AAC 60.810 - Surface water monitoring(a) The department may require surface water monitoring at any time during the active life and post-closure care period of a facility required to have a permit or authorization under 18 AAC 60.200 or 18 AAC 60.211. Surface water monitoring is required at a facility if the department determines, based on site-specific conditions and practices, that the solid waste stored or disposed at the facility increases the potential for constituents of concern to be present (1) in surface run-off or other liquid discharge from the facility; or(2) in nearby surface water that receives surface run-off or other liquid discharge from the facility.(b) If surface water monitoring is required under (a) of this section, surface water must be sampled at locations selected by the permittee and approved by the department. Collected samples must(1) detect, at an acceptable level of sensitivity, representative concentrations of the constituents of concern in either surface run-off or other liquid discharge that leaves the facility, or in nearby surface water that receives run-off or other liquid discharge from the facility; and(2) provide quantitative information about constituents of concern in surface runoff or nearby surface water while minimizing interference from sources other than the facility's waste management operations.(c) When establishing a sampling location under this section, consideration must be given to the(1) flow direction of surface run-off on the facility and on surrounding land;(2) the proximity of surface water bodies to the facility boundary;(3) the hydrology of the landfill and surrounding area; and(4) the location and proximity of any surface water used as a drinking water source.(d) If surface water monitoring is required under (a) of this section, sampling must occur during high-flow and low-flow conditions each year unless another schedule is approved or required by the department.(e) If surface water monitoring is required under (a) of this section, monitoring must include the analytes listed in 40 C.F.R. Part 258 , Appendix I, as amended through August 1, 2005, adopted by reference, and any additional analytes and parameters the department determines are necessary based on the type of waste disposed in the facility. The department may add analytes and parameters to the surface water monitoring program at any time during the active life of the facility based on the type of waste disposed in the facility and the available analytical data. The department may delete analytes and parameters from the surface water monitoring program based on available analytical data or if the department determines that the analytes and parameters are not expected to be in or derived from the waste disposed in the landfill.(f) If surface water monitoring is required under (a) of this section, the owner or operator of the facility shall develop a surface water monitoring plan that includes a quality assurance project plan and that defines consistent sampling and analysis procedures designed to ensure that monitoring meets the requirements of (b) - (e) of this section and any site-specific requirements that the department determines are necessary. The surface water monitoring plan must be approved by the department, and the owner or operator shall place the approved plan in the operating record of the facility. The surface water monitoring plan (1) shall be revised at the time of permit renewal and whenever a change in the monitoring program is requested by or approved by the department; and(2) must include procedures and techniques for(B) sample preservation and shipment;(C) analytical procedures;(D) chain of custody control; and(E) quality assurance and quality control.(g) If surface water monitoring is required under (a) of this section, the owner or operator shall (1) submit surface water sampling data and analyses to the department, in the format approved by the department, not later than 90 days after completing each sampling event or on an alternate date or schedule approved by the department; and(2) maintain in the operating record of the facility a complete record of all surface water monitoring conducted under this section.(h) After a surface water monitoring program is established under this section, the owner or operator of the facility shall continue to comply with the approved surface water monitoring plan while the facility is active and throughout the post-closure monitoring period.(i) A facility violates a surface water standard if any sampling location shows there is a statistically significant change or a statistically significant increasing trend in constituent concentrations, or a reported constituent concentration exceeds the applicable surface water standard, described in the department's Surface Water Standards Table. If a violation of a surface water standard is documented at any of the approved sampling locations, the owner or operator of the facility shall submit written notification of the violation to the department not later than 14 days after detecting the violation, unless the violation is in a water body that is used as a drinking water source, in which case the written notification must be submitted immediately after the owner or operator of the facility becomes aware of the violation.(j) The department may require corrective action for any surface water quality violation. The requirements of any necessary corrective action will be based on the nature of the surface water monitoring program, the location of the violation, and the risk the violation poses to public health or the environment. If the violation is documented at a sampling location that monitors(1) surface run-off or other liquid discharge from the facility, corrective action must consist of whatever actions are necessary to correct the violation by decreasing the constituent concentrations in surface run-off or liquid discharge from the facility;(2) a nearby surface water body, the owner or operator shall evaluate the extent of the contamination and take action as needed to reduce constituent concentrations in the affected surface water body to less than the applicable surface water standard, described in the department's Surface Water Standards Table.Eff. 1/28/96, Register 137; am 10/29/98, Register 148; am 2/25/2022, Register 241, April 2022 Authority:AS 44.46.020
AS 46.03.010
AS 46.03.020
AS 46.03.100
AS 46.03.110
AS 46.03.800
AS 46.03.810