What are the requirements for installing, surveying, and abandoning monitoring wells?
The Montana Department of Natural Resources and Conservation (DNRC) has adopted rules governing the installation and abandonment of monitoring wells in Montana. Construction standards for monitoring wells are found in Administrative Rule of Montana (ARM) 36.21.801 et seq. and includes requirements for construction materials, installation of seals, prevention of contamination by equipment, and site protection and security. The regulations also require that a monitoring well constructor licensed by the Montana Board of Water Well Contractors prepare a monitoring well report form for each monitoring well drilled. The monitoring well constructor must supply copies of the report to the monitoring well owner and DNRC within 60 days of completing the well and must also retain a copy as a record in the constructor’s files. In addition, Montana Code Annotated (MCA) ยง 85-2-516 requires that, within 60 days after any well is completed, the driller shall file a well log report with the Montana Sta
