35 Ill. Adm. Code 291.202
Point Source Emissions Inventory Data
Section 291
Section 291.202 Point Source
Emissions Inventory Data
a) A detailed point source emissions inventory must be used to
assess the ambient air quality. The following point sources shall be
identified:
1) All point sources outside the subject facility and within the
study area which emit 25 tons per year or more of the specified pollutant per
year to the ambient air.
2) All point sources of the specified pollutant within the
subject facility.
b) Data for each point source should be valid for the same period
of time as the meteorological and air quality data and should include, as a
minimum:
1) The facility name and address.
2) The location of all the emission sources in the subject
facility and their relationship to each other.
3) The maximum hourly controlled emission rate, which is the
greatest quantity of emissions that a source is expected to produce during any
one-hour of operation.
4) The annual average hourly controlled emission rate, which is
the total controlled emissions for a 12-month period divided by the total hours
of operation for the same period.
5) Stack height, stack diameter, exit gas temperature, and exit
gas velocity.
c) The point source emissions inventory data should be obtained
whenever possible from the Division of Air Pollution Control, Illinois
Environmental Protection Agency, 2200 Churchill Road, Springfield, Illinois,
62706. If the Agency does not have what it considers to be complete data for
all sources affecting the study area, the data should be obtained from
facilities in question.