Commission approves Promontory soil repository with conditions after commissioners remove visibility condition

The Eastern Summit County Planning Commission approved a conditional use permit for a Promontory soil repository site intended to store excess excavation material generated by Promontory development projects. Planning staff recommended approval with conditions; commissioners debated a proposed condition that would require the applicant to cease operations if off‑site visibility from county and state roads was encountered, and the commission voted to remove that condition before approving the CUP.

Planning staff described the proposed repository as a site behind the ridge along Browns Canyon Road intended to contain only clean excavation materials from Promontory projects. Staff and the applicant emphasized the site is not intended to accept construction waste such as asphalt, rebar, concrete or other demolition debris. The applicant’s representatives said the site would be used to store and re-use soils generated by grading and foundation excavations from Promontory builds and that they already operate a repository elsewhere that is nearing capacity.

Applicant representative Matthew Idema (director of land development for Promontory) and another Promontory representative answered commission questions about hours of operation, weed control, screening and remediation. The applicant said contractors are normally expected to operate between 7 a.m. and 6 p.m. Monday through Friday, with rare special requests for Saturdays and no regular Sunday operations. The applicant said they will file required weed-control documentation with county staff, that the site will be staked and signed to mark limits, and that a $170,000 bond was placed with county engineering to secure stabilization and remediation obligations.

Commissioners and staff discussed details intended to minimize visual and nuisance impacts. Exhibits shown to the commission included a cut/fill summary and a color-coded view plan that limited stockpile heights so material would be screened from Browns Canyon viewpoints; the applicant said berms and natural tree stands would be used to screen the site and that a maximum stockpile height of about 12 feet was planned in locations visible from the road. Commissioners asked for assurances that concrete/asphalt would not be placed in the repository; the applicant confirmed those materials are prohibited.

Planning staff had included a draft condition stating that if off‑site visibility from county or state roads were encountered, the applicant must cease operations until an acceptable mitigation solution was found. Commissioners debated whether that condition was necessary or unduly onerous. One commissioner said the condition would be an appropriate ‘‘raising the bar’’ best practice; others said it risked enabling repeated complaints based solely on visibility of a dirt pile and could create enforcement issues. The commission voted to strike that visibility condition from the list of conditions of approval and then approved the CUP with the remaining conditions.

Commissioners and applicant representatives said Promontory intends to remediate prior repository sites once the company shifts operations to the new site. The applicant described prior remediation using Promontory’s seed mix and leveling to restore older repository sites; the company said this new site will be remediated and potentially repurposed after use.