SIP - ALASKA - 18 AAC 50.045
18 AAC 50.045. PROHIBITIONS
(a) A person may not dilute emissions with air to comply with this chapter, except that dilution air may be used at a sulfur recovery plant with a maximum production rate of 20 long tons per day or less to comply with the 500 ppm sulfur dioxide requirement of 18 AAC 50.055(c).
(b) A person who owns or operates a stationary source that emits an air pollutant subject to this chapter shall ensure that the stationary source complies with this chapter and any other applicable local, state, or federal law.
(c) A person may not construct, operate, or modify a stationary source that will result in a violation of the applicable emission standards or that will interfere with the attainment or maintenance of ambient air quality standards.
(d) A person who causes or permits bulk materials to be handled, transported, or stored, or who engages in an industrial activity or construction project shall take reasonable precautions to prevent particulate matter from being emitted into the ambient air.
(e) Dispersion techniques may not be used to comply with this chapter, except for compliance with 18 AAC 50.110.
(f) Subject to (g) of this section, as used in this section, "dispersion technique" means a technique that attempts to reduce the concentration of an air pollutant in the ambient air by
(g) The following are not dispersion techniques for purposes of this section:
(1) using that portion of a stack that exceeds good engineering practice stack height;
(2) varying the emissions rate of an air pollutant according to atmospheric conditions or ambient concentrations of that air pollutant; or
(3) increasing exhaust gas plume rise by
(A) manipulating a source process parameter, exhaust gas parameter, or stack parameter;
(B) combining exhaust gases from several existing stacks into one stack; or
(C) other selective handling of exhaust gas streams.
State effective: 10/1/04; EPA effective: 9/13/07
(1) reheating a gas stream to its original discharge temperature after use of an emission control system;
(2) combining the exhaust gases from several stacks into one stack if the stationary source was originally designed and constructed with combined exhaust streams;
(3) combining the exhaust gases from several stacks into one stack, if done when an emission control system is installed and results in a net reduction in the allowable emissions of the controlled air pollutant; or
(4) any technique that increases the exhaust gas plume rise if the allowable emissions of sulfur dioxide from the stationary source are less than 5,000 tons per year.