35 Ill. Adm. Code 309.206
Experimental Permits
Section 309
Section 309.206Â Experimental
Permits
a)Â Â Â Â Â Â Â Â To promote developing water pollution control technology, the
Agency may issue experimental permits for treatment processes or techniques
that do not satisfy the standards for issuance in Section 309.241 if the
applicant submits clear, cogent, and convincing proof that the process or
technique has a reasonable and substantial chance for success.
b)Â Â Â Â Â Â Â Â The existence of a valid experimental permit constitutes a
prima facie defense to any action brought against the permittee for a violation
of this Chapter, but only to the extent that such action is based on the
failure of the process or techniques, during the period of validity of the
permit, to meet the effluent limitations of water quality standards of this
Chapter.
c)Â Â Â Â Â Â Â Â An experimental permit may not be issued instead of an NPDES
Permit when an NPDES Permit is required.