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 became effective on July 20, 2011.  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.

General Permit #5 Renewal

General Permit #5 expires on July 19, 2016. The Final Rule to renew GP5 was approved by the Environmental Protection Commission at their meeting on May 17, 2016. Please see section 11 of the EPC May Agenda to view the pre-publication version of the final rule.

To view the proposed general permit, the permit rationale (fact sheet), and a presentation highlighting the differences between the proposed and current general permits, please see the links below:

Forms for General Permit #5 (2011 version)

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.

Questions on General Permit #5

For more information on General Permit #5, please contact:
Julie Faas,, 515-725-8409