Montana air monitoring network review 2001
Erp E, Ugorowski J, Bellino J. 2001. Montana air monitoring network review 2001. Montana Department of Environmental Quality. Helena, Montana
The U.S. Environmental Protection Agency (EPA) requires the Montana Department of Environmental Quality to conduct an annual review of the State's ambient air monitoring network. EPA's requirements for an annual network review are in 40 CFR 58.20(d). The requirements maintain that the State must conduct an annual review to determine if the air quality surveillance system or ambient monitoring network meets the monitoring objectives in 40 CFR Part 58, Appendix D. Also, the annual review is to identify needed modifications of the network, such as the termination or relocation of unnecessary stations or the establishment of new stations, which are necessary. The Department is also required by 40 CFR 58.25 to develop and implement an annual schedule to modify the network to eliminate any unnecessary stations or to correct any inadequacies indicated by the results of the annual review. The Department must consult with the EPA Regional Administrator during the development of the schedule to modify the monitoring program. The final schedule and modifications are subject to the approval by the Regional Administrator. This document and subsequent revisions are intended to satisfy the annual requirements.