Section 742.925  Exposure Routes

Technical information may demonstrate that there is no actual or potential impact of contaminants of concern to receptors from a particular exposure route.  In these instances, a demonstration excluding an exposure route shall be submitted to the Agency for review and approval.  A demonstration that involves the indoor inhalation exposure route shall follow Section 742.935 in lieu of this Section.  A submittal under this Section shall include the following information:

a)         A description of the route evaluated;

b)         A description of the site and physical site characteristics;

c)         A discussion of the result and possibility of the route becoming active in the future; and

d)         Technical support that may include, but is not limited to, the following:

1)         a discussion of the natural or man-made barriers to that exposure route;

2)         calculations and modeling;

3)         physical and chemical properties of contaminants of concern; and

4)         contaminant migration properties.

(Source:  Amended at 37 Ill. Reg. 7506, effective May 15, 2013)