1. (1) Fossil Fuel Fired Steam Generators.

   1. (a) A continuous monitoring system for the measurement of opacity shall be installed, calibrated, maintained, and operated on any fossil fuel fired steam generator of greater than 250 million BTU per hour for each boiler except where:

      1. (i) natural gas or oil or a mixture of natural gas and oil is the only fuel burned,
      2. (ii) the source is able to comply with the applicable particulate matter and opacity regulations without using particulate matter collection equipment, and
      3. (iii) the source has never been found through any administrative or judicial proceeding to be in violation of any visible emission standard or requirements.
   2. (b) A continuous monitoring system for the measurement of sulfur dioxide shall be installed, calibrated, maintained, and operated on any fossil fuel fired steam generator of greater than 250 million BTU per hour heat input which has installed sulfur dioxide pollution control equipment.
   3. (c) A continuous monitoring system for the measurement of nitrogen oxides shall be installed, calibrated, maintained, and operated on fossil fuel fired steam generators of greater than 1000 million BTU per hour heat input when such facility is located in an Air Quality Control Region where the director has specifically determined that a control strategy for nitrogen dioxide is necessary to attain the national standards, unless the source owner or operator demonstrates during source compliance tests as required by the director that such a source emits nitrogen oxides at levels 30 percent or more below the emission standard.
   4. (d) A continuous monitoring system for the measurement of percent oxygen or carbon dioxide shall be installed, calibrated, maintained, and operated on any fossil fuel fired steam generators where measurements of oxygen or carbon dioxide in the flue gas are required to convert either sulfur dioxide or nitrogen oxides continuous emission monitoring data, or both, to units of the emission standard.

2. (2) Nitric Acid Plants.

   Each nitric acid plant of greater than 300 tons per day production capacity, the production capacity being expressed as 100 percent acid, and located in an Air Quality Control Region where the director has specifically determined that a control strategy for nitrogen dioxide is necessary to attain the national standard, shall install, calibrate, maintain, and operate a continuous monitoring system for the measurement of nitrogen oxides for each nitric acid producing installation.

3. (3) Sulfuric Acid Plants - Burning and Production.

   Each sulfuric acid plant of greater than 300 tons per day production capacity, the production being expressed as 100 percent acid, shall install, calibrate, maintain and operate a continuous monitoring system for the measurement of sulfur dioxide for each sulfuric acid producing installation within such plant.

4. (4) Petroleum Refineries - Fluid Bed Catalytic Cracking Unit Catalyst Regenerator.

   Each catalyst regenerator for fluid bed catalytic cracking units of greater than 20,000 barrels per day fresh feed capacity shall install, calibrate, maintain and operate a continuous monitoring system for the measurement of opacity.

KEY: air pollution, monitoring, continuous monitoring

Date of Last Change: February 8, 2008

Notice of Continuation: December 7, 2022

Authorizing, and Implemented or Interpreted Law: 19-2-101; 19-2-104(1)(c); 19-2-115(3)(b); 40 CFR 60