Why not leave the soils at Gordo where they are if they are capped according to the Municipal Code?
The City has been working with UDEQ on the siting of a “permitted” facility for the management of Soils District soils for since 2010. The permitting and constructing of a Class 1 Landfill for the containment of the soils in the Park City area is economically and environmentally sustainable. The facility will be lined, inspected, and operated through UDEQ. Monitoring wells will be installed, and the ground water monitored for any leaching of contaminates under the permit.
What is the budget for building and operating the Park City Soils Management facility?
The current cost estimate for Phase 1 and 2 construction and operation is $1.8 Million. The City will maintain a budget of $900,000 for Closure and Post Closure costs.
What would be the cost for hauling soils to another facility instead of to the Gordo property?
Staff recently reevaluated the original 2019 cost estimates based on current fuel rates, equipment costs, and tipping fees. For the soils located at the Arts and Culture District site alone, the savings in 2021 would be close to $7.3M. For Arts and Culture soils, plus the current Gordo soils, plus future City projects in the pipeline, the savings are estimated to be approximately $17.9M.
(response updated 5.8.21)
Where are the soils coming from?
What’s the story with the dirt/work being done right now at the Gordo property?
Currently, the site is used by Public Works for recycling of materials (green waste, asphalt, concrete, and clean soils). The site is also being used as a staging area for clay soils for the 3 Kings Water Treatment Plant golf-course ponds restoration. This will be completed within the next two weeks.
Why are there soils stored at Gordo currently?
Historically, the City used the Richardson Flat repository for mine impacted soils generated from the Park City Soils Ordinance Boundary (“Soils District”). In 2010, the Richardson Flat repository became no longer available to the City. In 2010 there were several large roadway projects (Comstock Tunnel, Bonanza…) generating soils from within the Soils District. The City worked with the EPA on an interim solution for these soils to be stored at the Gordo property.
The soils have been capped with topsoil in accordance to Park City Municipal Code 11-15 Park City Landscaping and Maintenance of Soil Cover (“Soils Ordinance”).
How is this different from a typical landfill?
This repository will not be open for public disposal. Gordo will only accept soils generated from within the Soils District. No trash, garbage, liquid waste, sludges, or hazardous waste. Soils will be prescreened at the construction site and documentation of location of generation will accompany each load of soil prior to acceptance at the facility.
What does Bevill-exempt mean?
Bevill-exempt waste is USEPA “Special Waste” that is exempted from Hazardous Waste Regulations as it was generated in large quantities during the mining process and is considered to pose less risk to human health and the environment than “hazardous wastes.”
It has been determined that the soils within the Soils Ordinance Boundary are derived from the mining and beneficiation of ores and therefore are Bevill-exempt.
If soils have higher arsenic and lead thresholds that what is listed in the Soils Ordinance (Arsenic – 5.0 mg/L, Lead – 5.0 mg/L), can they still be stored at the Gordo site?
Yes, the soils may be stored at the Soils Repository. The soils are characterized as Bevill-Exempt, going to a UDEQ permitted and lined facility, and therefore exempt from the leaching procedure standards
Are the soils going here hazardous/toxic/dangerous?
The Bevill-exempt soils are excluded from the EPA “hazardous waste” designation. The soils within the Soils District are known to often contain higher levels of lead from the ore extraction process of mining, and therefore the Soils Ordinance requires 6” of topsoil capping (more for vegetable gardens and other conditions) in order to protect residents from dust and other possible prolonged exposure. The soils going into Gordo are generally the same as what exists in many Park City neighborhoods today.
Typically, in the Bonanza Park area, how contaminated are the soils? Compared to the Prospector neighborhood or Park City Heights, for example?
From the Soils Ordinance Boundary map the Bonanza Park area is located just to the west of the original Ordinance Boundary Area. All soils in the Soils Ordinance Boundary are classified the same. Certain areas have known higher concentrations of lead and other heavy metals, such as where the Old Town Transit Center is located, where thicker capping and maintenance requirements were instituted.
As part of the Park City Heights development, soils contaminated with lead and arsenic were discovered and the developer entered into a Voluntary Cleanup Program VCP with UDEQ. Approximately 89,000 cubic yards of metals-impacted soils were excavated and consolidated in repository adjacent to homes within the subdivision.
What City Permits are needed for the soil repository? Have they been issued?
A Park City Building Permit will be required for the construction of the facility and has not been applied for or issued. The permit will contain the engineering drawings for the excavation, the liner, berming, capping, final liner and soil cover, revegetation plan, and the construction mitigation plan. The construction mitigation plan will address dust and other construction activities.
Is there a clear schedule of operating hours for this proposed soil repository?
Construction will take place during permitted hours through the Building Permit. The acceptance of soils from projects will also fall during their permitted project hours. There will be no night lighting.
Will UDOT be installing a traffic light going all 4 directions at the Richardson Flats/SR-248 intersection?
Yes. UDOT is installing a traffic signal in fall of 2021 as required for the Park City Heights development. We do not have a schedule from UDOT yet.
Will the city be planting mature trees on the edge of 248 to block any dust or debris that flies from this repository on windy days? How do you plan to keep the air clean?
A berm will be built along the SR-248 side of the property to help mitigate the visual impacts from the highway. It will be planted with native plant materials including grasses, sage and other brush consistent with the area vegetation. The environment adjacent to the highway is not conducive to shade or ornamental trees.
For how many years will this site be open for adding additional soil?
The first phase will be open for 2-3 years. The second phase will be open for 10+ years. The first phase will be covered with a plastic liner and capped with topsoil. The repository will be revegetated with native grasses and sage similar to the surrounding landscape. The same will be done with the second phase.
Regarding future large-scale projects in town that aren’t city or residential projects (i.e. Park City Mountain Base Area development), will dirt from that type of project be added to this site?
Only City and City-partnered (like the Arts and Culture District or a future PPP for affordable housing) projects and private property owners for building permit projects within the Soils Ordinance boundary will be able to use this facility.
What will the surface elevation of the landfill be (i.e. how tall)? What will it look like from the road and other view points?
The top of phase 2 will be approximately 10-15’ taller than the current stockpiled soil pile. The top of the repository will slope down toward SR-248 to the berm created from Phase 1.
Is this site close to wetlands or other sensitive areas?
From the site analysis the location meets all of the UDEQ criteria for siting a Class 1 facility. The repository will be lined with an impermeable plastic liner and ground water monitored for any leachate from the repository. This is the only facility in Park City/Summit County that is lined and permitted through UDEQ.
Regulation states a landfill may not be sited within 1,000 feet of a county, city park, or recreation area. Isn’t Gordo near Round Valley and trails?
For the purposes of this permit application, recreation areas and parks include developed facilities such as ice rink buildings and restrooms. Surface improvements like trails, sidewalks, and fences were not included. The preliminary site assessment determined that the Park City Sports Complex at Quinn’s Junction is 1,600 feet from the Soils Repository, and other facilities such as the dog park and ice arena are further away.
(response updated 5.8.21)
Prior it it being capped, will wind be an issue? If the answer is to frequently spray with water can our drought handle this increased demand?
Further, section 3.6 of the Operations plan also notes a weather contingency plan calling for closure of the landfull during periods of inclement weather (such as high winds, etc.) that would make operations dangerous.
Based on previous excavation of soils within the Soils Ordinance Boundary what is the upper and lower end estimates of soils in cubic yards that will need to be placed in this facility for build out of the Arts and Culture District?
The upper estimate would be 60,000 cubic yards, the lower estimate would be 40,000 cubic yards.