N.M. Code R. § 20.2.31.112 – Monitoring

A. The owner or operator of new or existing coal burning equipment subject to this Part shall not permit, cause, suffer or allow operation of the coal burning equipment without normally maintaining in good operating condition at least one monitor, approved by the Department, which shall continuously measure and record sulfur dioxide concentrations in the gases within each stack from which flue gases serving coal burning equipment are released to the atmosphere. All sampling points for monitoring sulfur dioxide concentrations shall be approved by the Department. Existing coal burning equipment having a rated heat capacity less than or equal to 5,000 million British Thermal Units per hour shall be equipped and operated with such continuous sulfur dioxide monitors as soon as practicable but in no case later than December 31, 1981. Existing coal burning equipment having a rated heat capacity greater than 5,000 million British Thermal Unit per hour shall be equipped and operated with such continuous sulfur dioxide monitors no later than December 31, 1984.
B. Coal burning equipment subject to the percentage removal requirements of 20.2.31.110 NMAC shall also continuously measure and record sulfur dioxide concentrations within the flue gases prior to their entering any sulfur dioxide removal system, unless the Department has approved an alternative means of determining sulfur dioxide concentrations within the flue gases prior to their entry into the sulfur dioxide removal system based upon a finding by the Department that continuous monitoring at such locations is infeasible or otherwise unreasonable.
C. Instruments and sampling systems installed and used pursuant to this section shall be calibrated in accordance with the methods prescribed by manufacturer's recommended zero adjustment and calibration check procedures at least once every 24-hours of operation, unless the instrument manufacturer specifies or recommends calibration checks more frequently; provided however, that no calibration and adjustments shall be required during the period when coal burning equipment is not operating. The reference method shall be consistent with the method for manual sampling of sulfur dioxide specified in 20.2.31.111 NMAC. The owner or operator of coal burning equipment shall retain for a period of two years all raw data and quality assurance measurements and procedures.
[11/30/95; 20.2.31.112 NMAC - Rn, 20 NMAC 2.31.112 10/31/02]