35 Ill. Adm. Code 291.205
Air Quality Data
Section 291
Section 291.205 Air Quality
Data
All available ambient air
quality monitoring data for the subject pollutant in the study area shall be
assembled by the applicant in a form suitable for comparison with the AAQS and
for calibration of the various air quality simulation models which are a necessary
portion of the air quality study.
a) Air monitoring data collected by federal, state, or certain
local agencies in Illinois may be obtained from the Division of Air Pollution
Control, Illinois Environmental Protection Agency, 2200 Churchill Road,
Springfield, Illinois, 62706. Monitoring data collected by a governmental
agency in a state other than Illinois or by any private industry should be
obtained from the organization responsible for the monitoring site.
b) Monitoring data which is used by the applicant should have
been collected by air monitoring reference and equivalent methods published by
the USEPA in 40 CFR 50 (Appendices) and 40 CFR 53 and revisions thereto or by
an equivalent method approved by the Agency.