Michigan Administrative Code
Department - Environmental Quality
Air Quality Division
Part 2 - AIR USE APPROVAL
Section R. 336.1224 - Best available control technology for toxics (T-BACT); requirements for new and modified sources of air toxics; exemptions
Universal Citation: MI Admin Code R. 336.1224
Current through Vol. 24-04, March 15, 2024
Rule 224.
(1) A person who is responsible for any proposed new or modified emission unit or units for which an application for a permit to install is required by R 336.1201 and which emits a toxic air contaminant shall not cause or allow the emission of the toxic air contaminant from the proposed new or modified emission unit or units in excess of the maximum allowable emission rate based on the application of best available control technology for toxics (T-BACT), except as provided in subrule (2) of this rule.
(2) The requirement for T-BACT in subrule (1) of this rule does not apply to any of the following:
(a) An emission unit or units for which
standards have been promulgated under section 112(d) of the clean air act or
for which a control technology determination has been made under section 112(g)
or 112(j) for any of the following:
(i) The
hazardous pollutants listed in section 112(b) of the clean air act.
(ii) Other toxic air contaminants that are
volatile organic compounds, if the standard promulgated under section 112(d) of
the clean air act or the determination made under section 112(g) or 112(j)
controls similar compounds that are also volatile organic compounds.
(iii) Other toxic air contaminants that are
particulate matter, if the standard promulgated under section 112(d) of the
clean air act or the determination made under section 112(g) or 112(j) controls
similar compounds that are also particulate matter.
(b) An emission unit or units that is in
compliance with all of the following:
(i) The
maximum allowable emissions of each toxic air contaminant from the proposed new
or modified emission unit or units is 0.1 pound per hour or less for a
carcinogen or 1.0 pound per hour or less for any other toxic air
contaminant.
(ii) The applicable
initial threshold screening level for the toxic air contaminant is more than
200 micrograms per cubic meter.
(iii) The applicable initial risk screening
level is more than 0.1 micrograms per cubic meter.
(c) An emission unit or units which only
emits toxic air contaminants that are particulates or volatile organic
compounds and which is in compliance with best available control technology
requirements, including
R 336.1702, or lowest achievable
emission rate requirements for particulates and volatile organic
compounds.
(d) Engines, turbines,
boilers and process heaters burning solely natural gas, diesel fuel (No. 2 fuel
oil), or biodiesel, of up to 100 MMBTU per hour, provided that the effective
stack is vertical and unobstructed and is at least 1.5 times the building
height, and the building setback is at least 100 feet from the property
line.
(e) Natural gas fuel burning
equipment or natural gas fired equipment that meet all the following:
(i) A maximum natural gas usage rate of
50,000 cubic feet per hour or less.
(ii) Emissions from the source are discharged
from an unobstructed stack oriented vertically upwards.
(iii) With a stack height at least 1.5 times
the height of the building most influential in determining the predicted
ambient impacts of the emissions.
(f) Air pollution control equipment that
combusts only natural gas as fuel.
Disclaimer: These regulations may not be the most recent version. Michigan may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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