(415 ILCS 5/3.175)
(was 415 ILCS 5/3.80)
"Criterion" means the numerical
concentration of one or more toxic substances calculated by the Agency as a
basis for establishing
a permit limitation or violation of a water quality standard pursuant to
standards and procedures provided for in board regulations.
(Source: P.A. 92-574, eff. 6-26-02.)