Small Business Assistance - Permit Primer

Tier Three Facilities

Businesses that fall into this tier are the least regulated. Your business falls into the Tier 3 category if:

you have no discharges of contaminated storm water (no exposures of storm water to raw materials, intermediate materials or waste),
you are able to certify this to the DNR and that,
the DNR has inspected your facility and concurs with the certification.

To maintain your Tier 3 certification, please review the chart below for the requirements under Tier 3 then follow the steps immediately following this chart.

Comparison of Industrial Storm Water Discharge General Permit Requirements by Tier
Tier 1		Tier 2	Tier 3
Identify & Eliminate Non-permitted Outfalls	Yes	Yes	Yes
Follow Good Housekeeping Practices	Yes	Yes	Yes
Complete Annual Facility Site Compliance Inspections	Yes	Yes	Yes
Complete Quarterly Visual Monitoring	Yes	Yes	No
Develop a Storm Water Pollution Prevention Plan	Yes	Yes	No
Implement Source-area BMPs per the SWPPP	Yes	Yes	No
Perform Annual Chemical Monitoring	Yes	No	No
Submit a Permit Fee Annually	Yes ($200)	Yes ($100)	No

Please review the following requirement:

Annual Facility Site Compliance Inspection (Form 3400-176)

Please contact the storm water management staff covering your business location for additional information or if you have any questions (see link along left margin).