NAC445B.263. Monitoring systems: Frequency of operation.

Except for system breakdowns, repairs, calibration checks, and zero and span adjustments required by NAC 445B.261, all continuous monitoring systems must be in continuous operation and meet minimum frequency of operation requirements as follows:

     1. All continuous monitoring systems referred to in NAC 445B.259 and 445B.260 for measuring opacity of emissions must complete a minimum of one cycle of operation (sampling, analyzing and data recording) for each successive 10-second period.

     2. All continuous monitoring systems referred to in NAC 445B.259 for measuring oxides of nitrogen, sulfur dioxide, carbon dioxide or oxygen must complete a minimum of one cycle of operation (sampling, analyzing and data recording) for each successive 15-minute period.

     3. All continuous monitoring systems referred to in NAC 445B.260, except opacity, must complete a minimum of one cycle of operation (sampling, analyzing and data recording) for each successive 1-hour period.

     [Environmental Comm’n, Air Quality Reg. §§ 2.17.5-2.17.5.3, eff. 12-4-76]—(Substituted in revision for NAC 445.690)