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All storm water general permit applications must be accompanied by the following fees:
1 year - $175.00 3 years - $350.00 4 years - $525.00 5 years - $700.00
Storm Water General Permit applications may be submitted online at:
Online Storm Water General Permit Application
There are two options available when applying for an NPDES permit for a "storm water discharge associated with industrial activity"; applying for coverage under an individual permit, or applying for coverage under a general storm water permit.
Please note, any discharge from a facility or construction site that may temporarily degrade an Outstanding National Resource Water or Outstanding State Resource Water is required to be permitted by an individual NPDES permit, as stipulated in paragraph 567-61.2(2)"e" of the Iowa Administrative Code and in the Iowa Antidegradation Implementation Procedure. General permit coverage is not available for these discharges. The list of these waters is located in Appendix B of the Antidegradation Implementation Procedure. For more information about obtaining an individual storm water permit for these facilities and construction sites, please contact the Storm Water Program Coordinator at 515-725-8417.
An individual NPDES permit is only applicable to one discharger and is issued for a specific discharge. Only one individual permit will be issued to a facility. If a discharger has an existing individual NPDES permit, that permit will be modified to include its storm water outfalls.
All storm water dischargers are eligible to apply for an individual NPDES permit. Applicants applying for an individual permit must complete DNR Industrial Application Form 1, Form 2F, and Form 5. Additional forms may be required if storm water is mixed with non-process waste water (Form 2); process waste water from existing sources (Form 3); or process waste water from new sources (Form 4). To access these forms, refer to the NPDES Application Forms page.
If a discharge has a federal effluent limit, only a five year individual permit can be issued for the discharge. The five year permit fee for an individual storm water NPDES permit is $1250.00.
A storm water discharger may apply for coverage under a general permit. General permits are NPDES permits that contain the terms and conditions of a permit for a certain class of facilities. General permits are not specific to any one discharger; rather, the general permit identifies which dischargers may be eligible for coverage under the general permit.
IDNR has adopted three general permits for storm water, as follows:
To view IDNR's storm water general permits, please refer to the the Permits, Guidance & Application Forms page.
The storm water general permits are applicable to discharges composed of only storm water. Mixtures of storm water and non-storm water where the non-storm water would require an individual NPDES permit are not covered by Iowa's storm water general permits (refer to the specific general permit for additional details). In addition, discharges which have a federal effluent limit may not be covered by a storm water general permit.
Iowa law requires that general permits be adopted by rule. This requirement is more stringent than the routine NPDES permit issuance requirements. Because of Iowa's statutory requirement, the three storm water general permits have been adopted as administrative rules under 567 - Chapters 60 and 64 of the Iowa Administrative Code. The storm water general permits can only be modified through the rulemaking process.
Dischargers who apply for coverage under a general permit must complete and submit a Notice of Intent (NOI) to IDNR. An instruction sheet titled "How To File A Complete Notice Of Intent" is available to assist dischargers. The instruction sheet explains how to provide the following 3 elements of a complete NOI:
Please refer to the Permits, Guidance & Application Forms page for the general storm water permit NOI and instructions. To submit an NOI online, please use the Online Storm Water General Permit Application.
The following fee options are available for coverage under an NPDES storm water General Permit:
When a storm water discharger submits a complete Notice of Intent and fee to the IDNR, the discharger is agreeing to meet the terms and conditions of the general permit.