(1) Except as otherwise provided in this subchapter, or unless written approval is obtained from the department for an exemption from a specific part of the Montana Quality Assurance Project Plan, all sampling and data collection, recording, analysis, and transmittal including, but not limited to, site selection, calibrations, precision and accuracy determinations must be performed as specified in the Montana Quality Assurance Project Plan, incorporated by reference in ARM 17.8.202, except when more stringent requirements are contained in the Quality Assurance Handbook for Air Pollution Measurement Systems or 40 CFR Part 50, Part 53, and Part 58, also incorporated by reference in ARM 17.8.202.

(2) Any valid recorded value at any one monitoring device which exceeds the applicable ambient air quality standard constitutes an exceedance at that monitoring location but not at any other monitoring location and permitted exceedances are applicable to each monitoring location.

(3) If a valid recorded value comprises in whole or in part an exceedance of an ambient air quality standard, the recorded value does not comprise in whole or in part a second exceedance of the same ambient air quality standard.