Air Quality Housekeeping Rule

The Minnesota Pollution Control Agency (MPCA) has adopted amendments to rules governing air quality, Minnesota Rules chapters 7002, 7005, 7007, 7009, 7011, 7017, and 7019. The new rules update these chapters to keep Minnesota’s air quality rules current and ensure consistency with applicable state and federal regulations. The rules also implement the Minnesota Legislature’s 2020 ban on the use of trichloroethylene (TCE). Rule-related documents are provided below.

The new rules are effective May 2, 2022.

Rulemaking documents

March – April 2022

Notice of Adopted Rules as published in the State Register (April 25, 2022)

PDF icon Revisor’s notice of adopted rules (aq-rule2-30l)

PDF icon MPCA Order Adopting Rules and Response to Comments (aq-rule2-30j)

PDF icon Rule amendments as adopted (aq-rule2-30k)

Adopted rules show the modifications to the proposed rules.

PDF icon Administrative Law Judge report (aq-rule2-30i)

October – December 2021

PDF icon Revisor proposed amendments to air quality rules (aq-rule2-30e)

PDF icon Statement of Need and Reasonableness for Proposed Rules (aq-rule2-30f)

PDF icon Notice of Intent to Adopt proposed rules (State Register: Oct. 18, 2021)

PDF icon Presentation from public information meeting on proposed rules (aq-rule2-30g)

PDF icon Comments received during the Notice of Intent to Adopt comment period (aq-rule2-30h)

December 2020

PDF icon State Register notice: Request for comments (aq-rule2-30a)

PDF icon Preliminary concepts for amendments to air quality rules (aq-rule2-30b)

PDF icon Comments received in response to Request for Comments (aq-rule2-30c)


This rulemaking, referred to as the Air Quality Housekeeping Rule (R-04678), is part of an ongoing effort to maintain and improve the MPCA’s existing rules. The overall purpose of the rulemaking is to keep the air quality rules current, ensure consistency with applicable federal and state regulations, clarify ambiguous rule language, and correct gaps or errors identified while administering the rules. This rulemaking is needed to maintain the delegation from the U.S. Environmental Protection Agency (EPA) to implement and enforce certain provisions of the Clean Air Act in Minnesota, including the Title V operating permit program.

The rule amendments, as proposed, are summarized below.

Housekeeping rules. Various rule updates are necessary to account for changes in federal rules, to clarify existing language, and ease overall understanding of the rules. This includes:

  1. Updating requirements for Part 70 permit application notice and comment, and updating procedures to petition for EPA review of state and Part 70 permits.
  2. Modifying general requirements for Option B, C, and D registration permits and capped permits.
  3. Incorporating by reference federal plan requirements for small municipal waste combustor units and municipal solid waste landfills.
  4. Other minor housekeeping rule changes to clarify definitions, correct gaps and errors identified while administering the rules, and align state and federal rules.

New trichloroethylene (TCE) rule. The 2020 Minnesota Legislature enacted a ban on the use of TCE through the air quality permitting program. The MPCA intends to adopt a rule to implement the ban.

Links to related materials

Minnesota Statutes

Minnesota Rules


Questions about the rule amendments or technical aspects of the rule: Anne Jackson, or 651-757-2460

Questions about the rule process or schedule: Mary H. Lynn, or 651-757-2439