To ensure consistency in documentation submitted for ambient air monitoring site establishment, relocation, or discontinuation, EPA Region 4 requires the following information be provided in 1) the annual monitoring network plan due July 1 each calendar year or 2) an addendum to the network plan.

Requested changes to an agency’s network will only be considered and reviewed if they are accompanied by a cover letter on agency letterhead, and dated and signed by a designated agency representative. Any changes proposed to an agency’s SLAMS network that were not included in the annual network plan must be public noticed with a 30-day comment period. We will accept the documentation via email and/or hardcopy. We also encourage agencies to submit draft site proposals to EPA for review before posting the information for public comment.

• R4 Policy on Establishing, Discontinuing, or Relocating a State and Local Air Monitoring Station (SLAMS) (PDF)(5 pp, 256 K, April 2016)