Rulemaking for Bored Geothermal Heat Exchangers
Well Management Program
In 2013, the Minnesota Legislature amended Minnesota Statutes, chapter 103I, to include regulating all bored geothermal heat exchangers, not just geothermal exchangers installed vertically. Geothermal systems installed by excavation or trenching remain unregulated.
The Minnesota Department of Health (MDH) started revising Minnesota Rules, chapter 4725 (Wells and Borings) to reflect the statutory amendments in 2013. On August 5, 2013, MDH published its first Request for Comments in the State Register.
Issues considered in this rulemaking include:
- contractor licensing (including representative certification);
- technical requirements for design,
- construction, repair, and sealing of bored geothermal heat exchangers; and
- reporting requirements.
Due to the amount of time that has lapsed since the 2013 State Register publication, MDH has published a second Request for Comments, and is making a draft of the proposed rule amendments available for review and comment.
Instructions for submitting comments are provided in the Request for Comments as published in the Minnesota State Register (PDF), dated July 24, 2017, see pages 61-62. Comments may also be submitted online using this Online Submittal.