In This Issue:

Montana and Minnesota Update Nutrient Standards

SD DENR Reminds Irrigators to Avoid Overspray



Sign Up to Receive the Update Via Email

The Update Home Page

Previous Issues of The Update


Share this Article:

October Deadline for MPCA's 2015 Industrial Stormwater Multi-Sector General Permit Applications

MPCAA newly reissued industrial stormwater permit may affect thousands of businesses and organizations in Minnesota that need to apply or reapply for permit coverage. The Industrial Stormwater Permit affects industry sectors including chemical manufacturing, scrap recycling, and landfills. The permit applies to businesses where there is a potential for stormwater to come into contact with industrial activities, products, or wastes.

The U.S. Environmental Protection Agency (USEPA) and all States require industrial stormwater permit coverage for industry sectors. Approximately 3,500 facilities in Minnesota currently have the Industrial Stormwater Multi-Sector General Permit. Although the 2010 permit does not expire until April 5, 2015, all Minnesota permitees must reapply before October 5, 2014. The penalty for late applications or failure to apply is $400.

Updates to the MPCA's 2015 Industrial Stormwater Permit:

  • Streamlines sampling requirements:  All existing Permittees who apply between July 7, 2014 and October 5, 2014 will conduct a year of quarterly sampling starting July 1, 2015. Any Permittee that applies after April 5, 2015 will start sampling requirements the next full calendar quarter.
  • Requires four samples before averaging: It will be required to collect a minimum of four samples, collected over four separate quarters, before averages will be calculated and compared with the Permit’s benchmark value(s). It is acceptable if it takes more than four quarters to get four samples because samples could not be collected due to drought/frozen conditions or no offsite discharges (legitimate “no flow” explanations).
  • Quarterly sampling until under benchmark values: Permittees with exceedances will continue sampling quarterly until four quarters of averaged results are below the benchmark value.
  • Limitations on infiltration:  The construction of a new infiltration device is prohibited in:
    • Areas that receive discharges from vehicle fueling and maintenance activity.
    • Areas with less than three feet of separation distance from the bottom of the infiltration device to the elevation of the seasonally saturated soils or the top of bedrock.
    • Areas of predominately Hydrologic Soil Group D (clay) soils unless allowed by a local unit of government with a current MS4 permit.
    • Areas where soil infiltration rates are more than 8.3 inches per hour unless soils are amended to slow the infiltration rate below 8.3 inches per hour or as allowed by a local unit of government with a current MS4 permit.

Applications can be submitted to the Minnesota Pollution Control Agency (MPCA) online. Current permittees and those with No Exposure certification can view their previously submitted information by going to the MPCA's Industrial Stormwater Permit Information application. Businesses and organizations that do not currently have a permit are advised to determine whether they need to have one by accessing step-by-step application instructions on the MPCA's Industrial Stormwater Permit website. MPCA program staff can also be reached by calling 1-800-657-3864.

If you have any questions concerning the content of this newsletter,
please contact Heather Syverson at 701-364-9111 or Heather.Syverson@ae2s.com.
Copyright © 2014 AE2S