35 Ill. Adm. Code 245.121
Objectionable Odor Nuisance Determination
Section 245
Section 245.121Â
Objectionable Odor Nuisance Determination
An objectionable odor nuisance
exists:
a)Â Â Â Â Â Â Â Â On or adjacent to residential, recreational, institutional,
retail sales, hotel or educational premises when odor is detectable in the
ambient air after it is diluted with eight volumes of odor-free air as measured
by the Scentometer;
b)Â Â Â Â Â Â Â Â On or adjacent to industrial premises when odor is detectable
in the ambient air after it is diluted with twenty-four volumes of odor-free
air as measured by the Scentometer;
c)Â Â Â Â Â Â Â Â On or adjacent to premises other than those above when odor is
detectable in the ambient air after it is diluted with sixteen volumes of
odor-free air as measured by the Scentometer;
d)Â Â Â Â Â Â Â Â When concurrent determinations made by three trained
inspectors as outlined above in any given one hour period and at intervals of
not less than fifteen minutes result in two positive determinations in each
series of three determinations; and
e)Â Â Â Â Â Â Â Â Provided that any quantitative odor level measurements taken
to arrive at a determination that an objectionable odor nuisance exists shall
be at or beyond the property line or at or near places where people live or
work.