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Environmental Health Division
Rulemaking for Portland Cement - Explorers and Exploratory Borings
The Minnesota Department of Health (MDH) is revising Minnesota Rules, chapter 4727 (Explorers and Exploratory Borings) to reflect changes in the cement industry towards greener products.
Minnesota Rules, chapter 4727 define Type I Portland cement by its conformity with ASTM Standard C150. The cement industry is replacing Type I Portland cement with a “low carbon” Type IL Portland-limestone cement. This new Type IL Portland-limestone cement conforms to ASTM Standard C595, not authorized under current rules governing Explorers and Exploratory Borings. This revision redefines the Portland cement definition to include Type I and Type IL.
Revision documents
- Order on Review of Rules:
Order on Review of Rules of the Proposed Amendment to Minnesota Rules, chapter 4727 (PDF) - Notice of Intent to Adopt Rules Without a Public Hearing:
Proposed Amendments to Rules Governing Explorers and Exploratory Borings, Minnesota Rules, chapter 4727; Revisor's ID, R4755; OAH Docket No. 22-9000-38393 (PDF) - Office of the Revisor of Statutes Administrative Rules:
Proposed Permanent Rules Relating to Exploratory Borings, Minnesota Rules, chapter 4727 (PDF) - Statement of Need and Reasonableness (SONAR):
SONAR for the Proposed Amendments of Minnesota Rules, chapter 4727, Explorers and Exploratory Borings (PDF) - State Register Posting published on May 8, 2023:
Minnesota State Register Volume 47, Number 45, pages 1082-1085 (PDF)
Well and Boring Construction and Sealing Laws and Rules
- Well Management Program.
Current Rule
- Minnesota Administrative Rules, Chapter 4727 governing Explorers and Exploratory Borings.
Rulemaking Basics
- Summary of the main parts of the process, important documents, and timeline for developing and adopting rules.
Earlier revision documents
Request for Comments as published on June 20, 2022, in the Minnesota State Register Volume 46, Number 51 (Page 1503)
Minnesota State Register, Volume 46, Number 51 (PDF).
In the Matter of the Proposed Amendment to Rules Governing Explorers and Exploratory Borings Minn. R. 4727, Revisor ID # R4755 (June 6, 2022)
Order on Request to Reduce Time for Soliciting Comments Under Minn. Stat. § 14.101, Subd. 4 (PDF).
Rulemaking contacts
Questions regarding the rulemaking process or the revised rules may be directed to:
Well Management Section
Minnesota Department of Health
P.O. Box 64975
St. Paul, Minnesota 55164-0975
wellrules.mdh@state.mn.us
651-201-4600 or 800-393-9808