MN SF1919

Defines "submerged closed loop heat exchanger" as a heating and cooling system installed in a water supply well that utilizes convective flow of groundwater as the primary heat exchange medium and contained potable water as the heat transfer fluid, operating through nonconsumptive recirculation with submersible pumps, heat exchanger device, and piping.

Adds "temporary boring" definition to Minnesota Statutes as an excavation 15 feet or more in depth, sealed within 72 hours of construction, used for groundwater testing, monitoring earth materials, measuring groundwater levels, or determining groundwater flow direction.

Expands the definition of "water supply well" to include wells containing a submerged closed loop heat exchanger for heating and cooling purposes.

Exempts submerged closed loop heat exchangers from permit requirements, variance requirements, and isolation distance requirements greater than ten feet when used solely for nonpotable heating and cooling purposes.

Allows screened intervals of water supply wells containing submerged closed loop heat exchangers to use any combination of screen, casing, leader, riser, sump, or piping within a single aquifer, provided the configuration does not interconnect aquifers.