SSTS Rule, Statute and Law History

History of SSTS Rules

Below are the SSTS rules for 2008 and 2006.  For rules prior to 2006, please contact the SSTS staff.

Effective Dates 2/4/08 to 3/14/11

• Public Notice - Request for Comments - 01/05/2004
• Proposed Rule Language and Notice of Hearing - 02/12/2007
• SONAR for Proposed Rule Language
• Public Notice Comments Received and Responses - 03/05/2007 to 05/11/2007
• Notice of Adoption - 01/28/2008
• Final Rule Language:
  
  • 7080
  • 7081
  • 7082
  • 7083
• Amendments:
  • Split rule into 4 parts – 7080, 7081, 7082, 7083
  • Product Registration – Advanced treatment devices and soil dispersal media
  • Tank testing and state listing
  • New license categories - Advanced Designers, Advanced Inspectors and Service Providers
  • Standards for mid-sized SSTS (MSTS)
  • Nitrogen requirements for SSTS over 2,500 gpd
    • Type IV systems
    • Pretreatment
    • Smaller systems
    • Less vertical separation distance
  • Management plan for all systems
  • Operating permit for systems greater than 2,500 gpd
  • System classification = "Types"
  • Inspector's discretion on failing to protect ground water
  • 15% reduction on existing system vertical separation distance
  • Increased septic tank sizing – all systems
  • Risers must come to the surface
  • Insulate shallow tanks
  • Pressurize seepage beds > 12 feet wide
  • Specific waste strength provided
  • 1/8-inch perforations allowed
  • 3 foot spacing of pressure laterals and perforations
  • Cleanouts on pressure laterals
  • Flow measurement with a pump
  • 12 inches of soil cover over the soil dispersal system
  • Coarse sand = no treatment
  • Sandy soils must be pressurized
  • No more Designer I category
  • Flows provided for Other Establishments
  • Ground water mounding for MSTS
  • Increased soils training — 6 hours of continuing education every 3 years
  • Mentorship
  • Three soil borings for new construction, soil pit required
  • Must do field inspection for new construction

Effective Dates 4/3/06 to 2/4/08

• Request for Comments - 07/18/2005.
• Public Notice and Proposed Changes - 11/14/2005
• SONAR
• MPCA Response to Comments
• Notice of Adoption - 03/27/2006
• Chapter 7080
• Amendments:
  • Amendments required per MN Laws Chapter 249 (2004) to redoximorphic features determination, interpretation, and seasonally saturated soil dispute.

For prior Rule, Statute, and Law History, please contact the MPCA SSTS staff.