NAC445B.267. Alternative monitoring procedures or requirements.

     1. Upon written application by an owner or operator, the Director may approve alternatives to any monitoring procedures or requirements of NAC 445B.256 to 445B.267, inclusive, including, but not limited to, the following:

     (a) Alternative monitoring requirements when installation of a continuous monitoring system or monitoring device specified by those sections would not provide accurate measurements due to liquid water or other interferences caused by substances with the effluent gases.

     (b) Alternative monitoring requirements when the affected facility is infrequently operated.

     (c) Alternative monitoring requirements to accommodate continuous monitoring systems that require additional measurements to correct for stack moisture conditions.

     (d) Alternative locations for installing continuous monitoring systems or monitoring devices when the owner or operator can demonstrate that installation at alternate locations will enable accurate and representative measurements.

     (e) Alternative methods of converting regulated air pollutant concentration measurements to units of the standards.

     (f) Alternative procedures for performing daily checks of zero and span drift that do not involve use of span gases or test cells.

     (g) Alternatives to the test methods of the American Society for Testing and Materials or sampling procedures specified by any provision of NAC 445B.256 to 445B.267, inclusive.

     (h) Alternative continuous monitoring systems that do not meet the design or performance requirements in Performance Specification 1, Appendix B of 40 C.F.R. Part 60, but adequately demonstrate a definite and consistent relationship between their measurements and the measurements of opacity by a system complying with the requirements in Performance Specification 1. The Director may require that such demonstration be performed for each affected facility.

     (i) Alternative monitoring requirements when the effluent from a single affected facility or the combined effluent from two or more affected facilities are released to the atmosphere through more than one point.

     2. Notwithstanding the provisions of subsection 1, the Director shall not approve an alternative method or equivalent method to determine compliance with a standard or emission limitation contained in Part 60, 61 or 63 of Title 40 of the Code of Federal Regulations for:

     (a) An emission unit that is subject to a testing requirement pursuant to Part 60, 61 or 63 of Title 40 of the Code of Federal Regulations; or

     (b) An affected source.

     [Environmental Comm’n, Air Quality Reg. §§ 2.17.9-2.17.9.7, eff. 12-4-76; § 2.17.9.8, eff. 12-4-76; A 12-15-77]—(NAC A 10-30-95; R065-03, 10-30-2003)