Each person subject to this Section must remit the applicable annual fee to the Agency in accordance with the requirements set forth in this Section and any rules adopted pursuant to this Section.
Except as provided in subsection (c) with respect to initial fees under new permits and certain modifications of existing permits, fees payable under this Section are due by the date specified in the fee notice, which shall be no less than 30 days after the date the fee notice is mailed by the Agency.
The initial annual fee for discharges or other activity under a general NPDES permit must be remitted to the Agency as part of the application for coverage under that general permit.
Beginning January 1, 2010, in the case of construction site storm water discharges for which a coverage letter under a general NPDES permit or individual NPDES permit has been issued or for which the application for coverage under an NPDES permit has been filed with the Agency, no annual fee shall be due after payment of an initial annual fee in the amount provided in subsection (e)(10) of this Section.
If a requested modification to an existing NPDES permit causes a change in the applicable fee categories under subsection (e) that results in an increase in the required fee, the permittee must pay to the Agency the amount of the increase, prorated for the number of months remaining before the next July 1, before the modification is granted.
The fee amounts in this subdivision (e)(2) are in addition to the fees stated in subdivision (e)(1) when the combined sewer overflow outfall is contained within a permit subject to subsection (e)(1) fees.
Subject to appropriation, the moneys in the Fund shall be used by the Agency to carry out the Agency's clean water activities.
415 ILCS 5/12.5