Rulemaking for Portland Cement - Wells and Borings

The Minnesota Department of Health (MDH) is revising Minnesota Rules, chapter 4725 (Wells and Borings) to reflect changes in the cement industry towards greener products.

Minnesota Rules, chapter 4725 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 Wells and Borings. This revision redefines the Portland cement definition to include Type I and Type IL.

Revision documents

Request for Comments as published on June 20, 2022, in the Minnesota State Register Volume 46, Number 51 (Page 1504)

Minnesota State Register, Volume 46, Number 51 (PDF)

In the Matter of the Proposed Amendment to Rules Governing Wells and Borings Minn. R. 4725, Revisor ID # R4754

Order on Request to Reduce Time for Soliciting Comments Under Minn. Stat. § 14.101, Subd. 4 (PDF)

How to comment

Interested persons or groups may submit comments or information on draft rule amendments.

Please submit your questions or comments using this online form:
Public Comment - Rulemaking for Portland Cement (Wells and Borings)

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

health.wells@state.mn.us
651-201-4600 or 800-393-9808