1. A. No existing source which is not otherwise subject to standards of performance under this Article or Article 9 or 11 of this Chapter, shall cause or permit the emission of pollutants at rates greater than the following:

   1. 1. For particulate matter discharged into the atmosphere in any one hour from any unclassified process source in total quantities in excess of the amounts calculated by one of the following equations:

      1. a. For process sources having a process weight rate of 60,000 pounds per hour (30 tons per hour) or less, the maximum allowable emissions shall be determined by the following equation:

         E = 4.10P0.67

         where:

         E = the maximum allowable particulate emissions rate in pounds-mass per hour.

         P = the process weight rate in tons-mass per hour.

      2. b. For process weight rate greater than 60,000 pounds per hour (30 tons per hour), the maximum allowable emissions shall be determined by the following equation:

         E = 55.0P0.11-40

         where “E” and “P” are defined as indicated in subsection (A)(1)(a).

   2. 2. Sulfur dioxide – 600 parts per million.
   3. 3. Nitrogen oxides expressed as NO2 – 500 parts per million.
2. B. For purposes of this Section, the total process weight from all similar units employing a similar type process shall be used in determining the maximum allowable emission of particulate matter.
3. C. Actual values shall be calculated from the applicable equations and rounded off to two decimal places.
4. D. No person shall emit gaseous or odorous materials from equipment, operations or premises under the person’s control in such quantities or concentrations as to cause air pollution.

5. E. No person shall operate or use any machine, equipment, or other contrivance for the treatment or processing of animal or vegetable matter, separately or in combination, unless all gaseous vapors and gas entrained effluents from such operations, equipment, or contrivance have been either:

   1. 1. Incinerated to destruction, as indicated by a temperature measuring device, at not less than 1,200°F if constructed or reconstructed prior to January 1, 1989, or 1,600°F with a minimum residence time of 0.5 seconds if constructed or reconstructed thereafter; or
   2. 2. Passed through such other device which is designed, installed and maintained to prevent the emission of odors or other air contaminants and which is approved by the Director.
6. F. Materials including solvents or other volatile compounds, paints, acids, alkalies, pesticides, fertilizers and manure shall be processed, stored, used and transported in such a manner and by such means that they will not evaporate, leak, escape or be otherwise discharged into the ambient air so as to cause or contribute to air pollution. Where means are available to reduce effectively the contribution to air pollution from evaporation, leakage or discharge, the installation and use of such control methods, devices, or equipment shall be mandatory.
7. G. Where a stack, vent or other outlet is at such a level that fumes, gas mist, odor, smoke, vapor or any combination thereof constituting air pollution is discharged to adjoining property, the Director may require the installation of abatement equipment or the alteration of such stack, vent, or other outlet by the owner or operator thereof to a degree that will adequately dilute, reduce or eliminate the discharge of air pollution to adjoining property.
8. H. No person shall allow hydrogen sulfide to be emitted from any location in such manner and amount that the concentration of such emissions into the ambient air at any occupied place beyond the premises on which the source is located exceeds 0.03 parts per million by volume for any averaging period of 30 minutes or more.
9. I. No person shall cause, allow or permit discharge from any stationary source carbon monoxide emissions without the use of complete secondary combustion of waste gases generated by any process source.
10. J. No person shall allow hydrogen cyanide to be emitted from any location in such manner and amount that the concentration of such emissions into the ambient air at any occupied place beyond the premises on which the source is located exceeds 0.3 parts per million by volume for any averaging period of eight hours.
11. K. No person shall allow sodium cyanide dust or dust from any other solid cyanide to be emitted from any location in such manner and amount that the concentration of such emissions into the ambient air at any occupied place beyond the premises on which the source is located exceeds 140 micrograms per cubic meter for any averaging period of eight hours.

12. L. No owner or operator of a facility engaged in the surface coating of miscellaneous metal parts and products may operate a coating application system subject to this Section that emits volatile organic compounds in excess of any of the following:

    1. 1. 4.3 pounds per gallon (0.5 kilograms per liter) of coating, excluding water, delivered to a coating applicator that applies clear coatings.
    2. 2. 3.5 pounds per gallon (0.42 kilograms per liter) of coating, excluding water delivered to a coating applicator in a coating application system that is air dried or forced warm air dried at temperatures up to 194°F (90°C).
    3. 3. 3.5 pounds per gallon (0.42 kilograms per liter) of coating, excluding water, delivered to a coating applicator that applies extreme performance coatings.
    4. 4. 3.0 pounds per gallon (0.36 kilograms per liter) of coating, excluding water, delivered to a coating applicator for all other coatings and application systems.
13. M. If more than one emission limitation in subsection (L) applies to a specific coating, then the least stringent emission limitation shall be applied.
14. N. All VOC emissions from solvent washings shall be considered in the emission limitations in subsection (L), unless the solvent is directed into containers that prevent evaporation into the atmosphere.

Historical Note

Renumbered from R18-2-530 and amended effective November 15, 1993 (Supp. 93-4). Amended by final rulemaking at 15 A.A.R. 281, effective March 7, 2009 (Supp. 09-1).

R18‑2‑731. Standards of Performance for Existing Municipal Solid Waste Landfills

A. This Section applies to each municipal solid waste landfill (MSW landfill) at which:

1. Construction, reconstruction, or modification began on or before July 17, 2014; and

2. Waste was accepted at any time since November 8, 1987, or additional design capacity is available for future waste deposition.

B. For the purposes of this Section, “Municipal solid waste landfill or MSW landfill” means an entire disposal facility in a contiguous geographical space where household waste is placed in or on land. An MSW landfill may also receive other types of RCRA (Resource Conservation and Recovery Act) Subtitle D wastes such as commercial solid waste, nonhazardous sludge, conditionally exempt small quantity generator waste, and industrial solid waste. Portions of an MSW landfill may be separated by access roads. An MSW landfill may be publicly or privately owned.

C. MSW landfills covered by this Section shall comply with 40 CFR 60, Subpart Cf, effective as of the date of EPA approval of the state plan under section 111(d) of the Act. 40 CFR 60, Subpart WWW, “Standards of Performance for Municipal Solid Waste Landfills,” will remain in effect until Arizona’s state plan implementing Subpart Cf is approved by EPA. 40 CFR 60, Subpart Cf “Emissions Guidelines and Compliance Times for Municipal Solid Waste Landfills,” as adopted on August 29, 2016 (and no future amendments) is hereby incorporated by reference as applicable requirements. MSW landfills may meet the requirements of Subpart Cf by complying with 40 CFR 60, Subpart XXX. 40 CFR 60, Subpart XXX “Standards of Performance for Municipal Solid Waste Landfills that Commenced Construction, Reconstruction or Modification After July 17, 2014,” is incorporated by reference in R18-2-901.

Adopted effective April 4, 1997; filed with the Office of the Secretary of State March 14, 1997 (Supp. 97-1). Amended by final rulemaking at 24 A.A.R. 1864, effective August 10, 2018 (Supp. 18-2).