(1) The department shall adopt specific agricultural chemical ground water management plans through rulemaking; however, the department may implement emergency plans as set forth in 80-8-105 (4) or as authorized by the Montana Administrative Procedure Act. Prior to rulemaking, the department shall provide to the department of environmental quality a copy of each proposed specific agricultural chemical ground water management plan. A 30-day period must be provided for the department of environmental quality to prepare comments on the plan.
(2) The department shall review agricultural chemical ground water management plans periodically to determine if the requirements contained in the plans need to be modified based on new scientific data and information. Plan modifications must be accomplished by rulemaking.