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NPDES General Permit # 5 for Mining and Processing Facilities

Description of General Permit #5

General Permit #5 (GP #5) authorizes discharges from facilities primarily engaged in mining or quarrying to waters throughout the State of Iowa. GP #5 was reissued on July 20, 2016. The types of discharges authorized under GP #5 include:

  • wash water,
  • materials transport water,
  • scrubber water used for air pollution control,
  • water used for dust suppression,
  • mine or quarry dewatering, and
  • non-contact cooling water used for cooling of crusher bearings, drills, saws, dryers, pumps and air compressors.

The facilities covered by General Permit #5 may be primarily engaged in mining or quarrying the following:

  • dimension stone (SIC 1411),
  • crushed and broken limestone (SIC 1422),
  • construction sand and gravel (SIC 1442), or
  • clay, ceramic, and refractory minerals not elsewhere classified (SIC 1459) except bentonite and magnesite.

The previous version of General Permit #5 expired on July 19, 2016. The current version took effect on July 20, 2016.

Renewal of the Mining and Processing Facilities General Permit

The current version of GP #5 will expire on July 19, 2021. The Environmental Protection Commission (EPC) has adopted a final rule (ARC 5283C) to renew the permit for a forth five-year term. Changes to the permit include formatting, minor revisions to simplify existing language and improve clarity, additional definitions, and the inclusion of applicable existing state rules. The permit’s definition for “Waters of the United States” has also been updated to reference the June 22, 2020, federal definition. This is the effective date of the final Navigable Waters Protection Rule published by the U.S. EPA.

The renewed version of GP #5 will become effective on July 20, 2021.

Please note that existing dischargers will be required to submit a new notice of intent (NOI) after the renewed GP #5 becomes effective and no later than January 15, 2022 to ensure no lapse in permit coverage.

Questions regarding the renewal can be directed to David Schelling at via email at david.schelling@dnr.iowa.gov or by phone at 515-725-8407.

Forms for General Permit #5

Notices of Intent, Annual Monitoring reports, and Fees for General Permit #5 may all be submitted electronically using the General Permits 5, 8, and 9 Database.  For more information on the database, and to access the user manual, please see the NPDES Databases page.

NPDES General Permit #5 - Mining and Processing Facilities DNR Form # Form Type and Link
General Permit #5     PDF File Format
NOI for General Permit #5 542-4006 DOC File Format PDF File Format
General Permit #5 - Annual Monitoring Report 542-8035 DOC File Format PDF File Format
General Permit #5 - Notice of Discontinuation 542-8038 DOC File Format PDF File Format
General Permit #5 - Fee Invoice 542-1257 DOC File Format PDF File Format
General Permit #5 - Frequently Asked Questions     PDF File Format

Fees for General Permit #5

A permitted facility has the option of submitting an annual fee, or a three, four, or five-year fee as follows:

  • Annual Permit Fee: $125 (per year)
  • Three-year Permit Fee: $300
  • Four-year Permit Fee: $400
  • Five-year Permit Fee: $500

Fees are to be submitted by August 30 each year unless a multiple year fee payment was paid in an earlier year. New facilities seeking general permit #5 coverage in any month except August shall submit fees with the Notice of Intent for coverage. Coverage provided by the five-year, four-year, and three-year permit fees expires no later than the expiration date of the general permit. Maximum coverage is five years, four years, and three years, respectively. In the event a facility is no longer eligible to be covered under general permit #5, the remainder of the fees previously paid by the facility would be applied toward its individual permit fee.

Fees for General Permit #5 may all be submitted electronically using the General Permits 5, 8, and 9 Database

Questions on General Permit #5

For more information on General Permit #5, please contact:
David Schelling, David.Schelling@dnr.iowa.gov, 515-725-8407
Tim Grotheer, Tim.Grotheer@dnr.iowa.gov, 515-725-8414