New Mexico Administrative Code
Title 20 - ENVIRONMENTAL PROTECTION
Chapter 2 - AIR QUALITY (STATEWIDE)
Part 40 - SULFURIC ACID PRODUCTION UNITS - SULFUR DIOXIDE, ACID MIST AND VISIBLE EMISSIONS
Section 20.2.40.7 - DEFINITIONS

Universal Citation: 20 NM Admin Code 20.2.40.7

Current through Register Vol. 35, No. 18, September 24, 2024

In addition to the terms defined in 20.2.2 NMAC (Definitions), as used in this Part:

A. "Acid mist" means sulfuric acid mist as measured by the method referenced in 20.2.40.110 NMAC and includes liquid mist as well as sulfur trioxide and sulfuric acid vapor.

B. "Commenced" means that an owner or operator has undertaken a continuous program of construction or that an owner or operator has entered into a binding agreement or contractual obligation to undertake and complete within a reasonable time a continuous program of construction.

C. "Construction" means fabrication, erection or installation of an affected facility.

D. "Existing sulfuric acid production unit" means a sulfuric acid production unit the construction or modification of which was commenced on or before August 17, 1971.

E. "Good engineering practice" means:

(1) With respect to stack heights less than 65 meters, the height necessary to insure that emissions from the stack do not result in excessive concentrations of any pollutant in the immediate vicinity of the source as result of atmospheric downwash, eddies and wakes which may be created by the source itself, nearby structures or nearby terrain obstacles. Such height shall not exceed:
(a) Thirty meters for stacks not influenced by the source itself, nearby structures or terrain; or

(b) The height determined by use of the equation: Hg = H+1.5 L; where: Hg = good engineering practice stack heights; H = the height of the source or nearby structure; and L = the lesser dimension (height or width) of the source or nearby structure for stacks that are influenced by nearby structures or terrain;

(2) With respect to stack heights equal to or greater than 65 meters, the owner or operator must satisfy all provisions and obtain all applicable approvals required under 20.2.80 NMAC (Stack Heights).

F. "Modification" means a physical change or change in the manner of operation which increases the amount of any air contaminant emitted by the sulfuric acid production unit or which results in the emission of any air contaminant not previously emitted.

G. "Pecos-Permian Basin Intrastate Air Quality Control Region" means Chaves, Curry, De Baca, Eddy, Lea, Quay and Roosevelt Counties.

H. "Sulfuric acid" means the chemical compound H2SO4.

I. "Sulfuric acid produced" means the production expressed as 100 percent H2SO4.

J. "Sulfuric acid production unit" means any facility producing sulfuric acid by the contact process by burning elemental sulfur, alkylation acid, hydrogen sulfide, organic sulfides and mercaptans, or acid sludge, but does not include facilities where conversion to sulfuric acid is utilized primarily as a means of preventing emissions to the atmosphere of sulfur dioxide or other sulfur compounds.

K. "Ton" means 2,000 pounds.

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