Wisconsin § 160.23 - Implementation of responses for specific sites; preventive action limits.

§ 160.23. Implementation of responses for specific sites; preventive action limits.

160.23(1) (1) If the concentration of a substance in groundwater attains or exceeds a preventive action limit at a point of standards application, the regulatory agency shall assess the cause of the increased concentration, taking into account background concentrations, if known, and other known or suspected contributors in the area and shall evaluate the significance of the concentration of the substance and shall implement responses for a specific site designed to: 160.23(1)(a) (a) Minimize the concentration of the substance in the groundwater at the point of standards application where technically and economically feasible; 160.23(1)(b) (b) Regain and maintain compliance with the preventive action limit, unless, in the determination of the regulatory agency, the preventive action limit is either not technically or economically feasible, in which case, it shall achieve compliance with the lowest possible concentration which is technically and economically feasible; and 160.23(1)(c) (c) Ensure that the enforcement standard is not attained or exceeded at the point of standards application. 160.23(2) (2) A regulatory agency shall take responses with respect to a specific site in accordance with rules promulgated under s.