(1) For the purposes of this subchapter, the department adopts and incorporates by reference the following:

(a) The Montana Ambient Air Monitoring Program Quality Assurance Project Plan (2023), a department manual that specifies ambient air sampling and data collection, recording, analysis, and transmittal requirements that pertain only to the department's monitoring program;

(b) 40 CFR Part 50, specifying the national ambient air quality standards and ambient air quality monitoring reference methods except for the following changes: 40 CFR 50.14(c)(1) and (2) are replaced by 40 CFR 50.14(c)(1) and (2) as published in 81 FR 68216 on October 3, 2016;

(c) 40 CFR Part 53, specifying ambient air monitoring reference methods and equivalent methods; and

(d) 40 CFR Part 58, specifying criteria and requirements for ambient air quality monitoring and reporting.

(2) Copies of materials incorporated by reference in this subchapter may be obtained as referenced in ARM 17.8.102(3) and (4).