Carbon County commission grants 100-day extension for High Ridge subdivision after water-supply concerns

Carbon County commissioners declined to approve the High Ridge subdivision on Thursday after hearing prolonged public comment and legal warnings that the application lacks sufficient groundwater analysis, then approved a 100-calendar-day extension for the applicant to provide additional hydrologic information.

Planning staff told the commission the planning board had recommended conditional approval subject to 17 conditions, but numerous written letters and in-person testimony raised specific water-rights and water-availability concerns. Water-law attorney Graham Copas of Ferguson & Copas, representing neighbors and concerned citizens, argued the application “has been 0 analysis anywhere in this application or in the work of the planning committee of the impacts of this water use associated with this application and the propriety of generally using exempt groundwater wells to supply the neighborhood with water.” Copas cited recent Broadwater County litigation and Montana law requiring evaluation of physical and legal availability of water before approving new uses.

Environmental commenter Dave Bartlett presented water-quality research alleging elevated nitrate levels and evidence of human-source genetic material in local streams, urging commissioners to pause approval until scientific impacts were resolved. The applicant and their consultant, Cole Kanadry of IMAG, said the submission did not introduce new material beyond the application but offered clarifications and mitigation measures, including low-flow pumps, cisterns, metering and reporting, and limits on pump rates.

Commissioners focused on two central issues: whether the letters and testimony constituted “new information” that legally required referral back to the planning board for a limited hearing, and whether the county could realistically enforce conditions (for example, prohibiting irrigation from exempt wells) without additional monitoring and explicit enforcement mechanisms. Several commissioners said they were not comfortable approving the subdivision without clearer hydrologic data and concrete enforcement methods.

After discussion, a motion to approve the subdivision with the planning-board findings failed. The board then considered next steps and ultimately voted to grant a mutual 100-calendar-day extension of the review period to allow the applicant to produce additional aquifer testing and hydrologic analysis; the extension also creates time for staff and the public to review any technical reports and for the planning board to schedule any necessary follow-up public hearing if the new material is accepted as relevant. Opponents’ counsel asked that the county allow sufficient time after any new technical material is filed for retainer and review by independent hydrologic experts.

The commission also briefly closed the meeting to discuss potential litigation related to the application before returning to public session and making the extension vote. The extension passed and the commission scheduled no final approval pending receipt and review of the additional information.

Next procedural steps: the applicant must submit the agreed technical material within the extension timeframe; if new information is submitted that the commission deems relevant, statute allows referral back to the planning board for a limited public hearing (which would pause and extend review timelines further). The commission’s action leaves the High Ridge application active but delayed until the hydrologic questions are resolved or otherwise addressed through conditions or additional findings.