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Homeowners and staff press for details on Sage Road geothermal well; commission tables proposal
Summary
Commissioners and a homeowners association raised questions about glycol and drilling tailings after an owner and designer described a closed‑loop geothermal well for Sage Road; the commission tabled the item pending technical details (fluid type/volume, tailings containment, erosion controls and inspection plans).
At the Dec. 18 meeting the commission reviewed a proposal for a closed-loop geothermal well at Sage Road. Owner Gary Swargold described how closed-loop geothermal works and said a water–glycol solution would circulate in a sealed loop, stressing the system does not extract groundwater or discharge the loop fluid to the environment.
“Glycol is generally accepted as safe. This is circulated down and back up in the piping ... nothing leaves the pipe and nothing enters the pipe,” Swargold said.
Design consultant Idid Hadaya said the project team would leave manufacturer materials and system literature for staff and the association and that the project will use contractor inspections and a weekly inspection protocol to ensure erosion and sedimentation controls (including removable hay-bale checks) are maintained during construction.
Representatives of the Lake Wapequa association (resident and association president present) and several commissioners asked for specific details the transcript did not contain: the exact type and quantity of glycol or antifreeze proposed, whether biodegradable alternatives were possible, how drilling tailings would be managed and where they would be contained, and an explicit staking and inspection schedule for the access path. Staff advised the commission that the homeowners association had submitted comments expressing concern about potential glycol entering Lake Wapequa and that the commission should request explicit specifications and safeguards.
Commissioners suggested including a tailings pit specification, documented erosion and sediment controls, weekly inspection reporting and a clear plan for contractor responsibility. After discussion, the commission voted to table regulated activity 123216 (Sage Road) pending submittal of the requested technical details.
What happens next: Applicant to provide written specifications on the heat‑exchange fluid (type and volume), tailings management and erosion control details, and an inspection/staking schedule for staff review.
