ARM 17.50.709. REPORTING AND PLANNING REQUIREMENTS

(1) In addition to the other reports indicated above, each facility is required to prepare the following plans and reports: (a) an annual report describing in full all ground water sampling, water level measurements, modifications to the monitoring well network, inspections, maintenance activity and construction or operational events at the facility that may affect the monitoring well network; (b) a ground water monitoring plan indicating: (i) the ground water monitoring wells designated by the owner or operator and the department as wells included in the ground water monitoring network for active and closed portions of the facility; (ii) the approximate dates of sampling for each of the ground water monitoring wells; and (iii) periodic updates and revisions to the ground water monitoring plan to ensure monitoring of new active and closed portions of the facility. An owner or operator must update the ground water monitoring plan at least once each 5 years, except for closed facilities whose plans must be updated at least every 10 years. (2) If no major plan or report is being prepared at the time of new well construction, development, or rehabilitation, then all required documentation of this work must be submitted to the department within 90 days of the start of work on the well. Otherwise the well construction and development details will be attached as an appendix to the major plan or report. (3) The department may require the facility owner or operator to prepare other reports or plans if those reports and plans are determined by the department to be necessary to protect public health or natural resources. (4) A copy of all plans, reports, studies and other ground water monitoring methods or activities must be supplied to the department and placed in the operating record. (5) Revisions, changes, and additional requirements of the department must be incorporated into the operating records at a facility.