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District geothermal feasibility report: fewer wells expected; likely site east of stadium
Summary
The Northfield Public School District presented a geothermal test report as part of its construction update. District staff said earlier projections requiring a very large number of traditional wells are no longer applicable; using a deep Darcy system the report indicated full geothermal utilization would require about 10 wells and possibly as few
District staff reported on Oct. 14 that a recent geothermal test would reduce the number of ground-source wells needed for full building geothermal heating and cooling compared with early, high-level estimates.
Superintendent Dr. Mike Hillman said the district plans to use a deep "Darcy" well system (drilling deeper bore holes rather than many shallow wells). Early projections that assumed a traditional shallow well field suggested a much larger well count; the test report indicated a Darcy…
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