Uintah Mining District

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View of the Judge and Alliance mine waste pile.<br />Date Taken: 8/20/2014<br />Category: 1 Assessment<br />Latitude: 40.6284916666667<br />Longitude: -111.500946666667<br />Tags: Empire Canyon
Judge and Alliance mine waste pile adjacent to the drainage.<br />Date Taken: 8/20/2014<br />Category: 1 Assessment<br />Latitude: 40.6287716666667<br />Longitude: -111.501808333333<br />Tags: Empire Canyon
Waste pile at Ontario Mine #3.<br />Date Taken: 9/9/2014<br />Category: 1 Assessment<br />Latitude: 40.6257966666667<br />Longitude: -111.49685<br />Tags: Ontario Canyon
Erosion track at Ontario #3 waste pile entering the drainage.<br />Date Taken: 9/9/2014<br />Category: 1 Assessment<br />Latitude: 40.6257133333333<br />Longitude: -111.496911666667<br />Tags: Ontario Canyon
Erosion at bottom of the Thaynes mine waste pile.<br />Date Taken: 9/11/2014<br />Category: 1 Assessment<br />Latitude: 40.6254366666667<br />Longitude: -111.540146666667<br />Tags: Thaynes Canyon
Structures and erosion rills on the Thaynes mine waste pile.<br />Date Taken: 9/11/2014<br />Category: 1 Assessment<br />Latitude: 40.6248783333333<br />Longitude: -111.539305<br />Tags: Thaynes Canyon
Upstream view of water coming off the waste pile at the California Mine.<br />Date Taken: 9/11/2014<br />Category: 1 Assessment<br />Latitude: 40.6223<br />Longitude: -111.543083333333<br />Tags: Thaynes Canyon
View of the waste pile at the Comstock Mine. <br />Date Taken: 8/20/2014<br />Category: 1 Assessment<br />Latitude: 40.622775<br />Longitude: -111.542136666667<br />Tags: Thaynes Canyon
Drainage through the waste pile at the California Mine. <br />Date Taken: 8/20/2014<br />Category: 1 Assessment<br />Latitude: 40.621955<br />Longitude: -111.543778333333<br />Tags: Thaynes Canyon
View of the waste pile at the Comstock Mine. <br />Date Taken: 8/20/2014<br />Category: 1 Assessment<br />Latitude: 40.622775<br />Longitude: -111.542136666667<br />Tags: Thaynes Canyon
Drainage as it passes the California Mine. <br />Date Taken: 8/20/2014<br />Category: 1 Assessment<br />Latitude: 40.6222216666667<br />Longitude: -111.543121666667<br />Tags: Thaynes Canyon
Waste pile adjacent to the California Mine. <br />Date Taken: 8/20/2014<br />Category: 1 Assessment<br />Latitude: 40.6222<br />Longitude: -111.543258333333<br />Tags: Thaynes Canyon
View of the waste pile at the Apex Mine. <br />Date Taken: 8/20/2014<br />Category: 1 Assessment<br />Latitude: 40.6230866666667<br />Longitude: -111.540855<br />Tags: Thaynes Canyon
Area south of the California Mine with greater than 50,000 ppm lead as determined by in situ XRF measurements.<br />Date Taken: 9/11/2014<br />Category: 1 Assessment<br />Latitude: 40.6217616666667<br />Longitude: -111.54425<br />Tags: Thaynes Canyon
Mechanical erosion at the Thaynes mine waste pile.<br />Date Taken: 8/1/2016<br />Category: 1 Assessment<br />Latitude: 40.6268519<br />Longitude: -111.5389109<br />Tags: Thaynes Canyon, Admin Record
Skier traffic adjacent to the Thaynes mine waste pile.<br />Date Taken: 3/30/2016<br />Category: 1 Assessment<br />Latitude: 40.6259277777778<br />Longitude: -111.540475<br />Tags: Thaynes Canyon
Skier traffic adjacent to the Treasure Hollow waste pile.<br />Date Taken: 2/18/2016<br />Category: 1 Assessment<br />Latitude: 40.6353944444444<br />Longitude: -111.511711111111<br />Tags: Treasure Hollow
Recent erosion on the Treasure Hollow waste pile.<br />Date Taken: 5/25/2016<br />Category: 1 Assessment<br />Latitude: 40.6354305555556<br />Longitude: -111.511755555556<br />Tags: Treasure Hollow
Recent erosion on the Treasure Hollow waste pile.<br />Date Taken: 5/25/2016<br />Category: 1 Assessment<br />Latitude: 40.6357166666667<br />Longitude: -111.511536111111<br />Tags: Treasure Hollow
Recent erosion on the Treasure Hollow waste pile.<br />Date Taken: 5/25/2016<br />Category: 1 Assessment<br />Latitude: 40.6357166666667<br />Longitude: -111.511536111111<br />Tags: Treasure Hollow

View of the Judge and Alliance mine waste pile. Judge and Alliance mine waste pile adjacent to the drainage. Waste pile at Ontario Mine #3. Erosion track at Ontario #3 waste pile entering the drainage. Erosion at bottom of the Thaynes mine waste pile. Structures and erosion rills on the Thaynes mine waste pile. Upstream view of water coming off the waste pile at the California Mine. View of the waste pile at the Comstock Mine. Drainage through the waste pile at the California Mine. View of the waste pile at the Comstock Mine. Drainage as it passes the California Mine. Waste pile adjacent to the California Mine. View of the waste pile at the Apex Mine. Area south of the California Mine with greater than 50,000 ppm lead as determined by in situ XRF measurements. Mechanical erosion at the Thaynes mine waste pile. Skier traffic adjacent to the Thaynes mine waste pile. Skier traffic adjacent to the Treasure Hollow waste pile. Recent erosion on the Treasure Hollow waste pile. Recent erosion on the Treasure Hollow waste pile. Recent erosion on the Treasure Hollow waste pile. Visible erosion features on the Treasure Hollow waste pile. Waste rock from near the recreation trail that crosses the Treasure Hollow waste pile. Recent erosion on the Treasure Hollow waste pile. EPA crew collecting samples at the Treasure Mountain Junior High recreation fields. Historic aerial image of Pioneer Square tailings. Rock lined channel previously constructed by UPCM in the drainage. Waste material at the Silver King Mine. Waste material at the Silver King Mine. Historic ore sampling location near the Silver King Mill. Drainage as it approached the historic mill. Waste pile at the Silver King Mine. Waste pile at the Silver King Mine. Waste pile with visible erosion at the Silver King Mine. Historic Silver King Mill building. Historic ore sampling location near the Silver King Mill. Historic Silver King Mine building. Construction of the erosion control ditch below the Judge/Alliance waste pile as winter conditions set in. Construction of the erosion control ditch below the Judge and Alliance waste pile. Construction of the erosion control ditch below the Judge/Alliance waste pile. Construction of the erosion control ditch below the Judge/Alliance waste pile. Construction of the erosion control ditch below the Judge and Alliance waste pile. Location where staged material was loaded into haul trucks for transfer to Woodside Gulch and Thaynes Canyon on the mountain. Contaminated soil covered by EPA's Emergency and Rapid Response Services contractor at a property in Prospector Square. Restricted area in the Park City Mountain Resort parking lot that was established by Vail Resorts to support the removal effort in Woodside Gulch and Thanes Canyon. Topsoil material that was hauled and stockpiled in upper Thanes Canyon. Rip rap material that was hauled and stockpiled in upper Thaynes Canyon. Sign associated with a popular recreation trail that will be diverted away from the Treasure Hollow area during construction activities. Excavation of the Treasure Mountain Junior High School recreation fields. Sign placed at the Treasure Mountain Junior High School during a city-wide soccer tournament. Area west of the Treasure Mountain Junior High School building that was backfilled. Area southwest of the Treasure Mountain Junior High School building that was excavated. The courtyard at the Treasure Mountain Junior High School building that was excavated. Notice that was developed by EPA and the Park City School District and placed around the Treasure Mountain Junior High School and recreation fields during the removal. New sod placed on east side of Treasure Mountain Junior High School building. Excavation of the Treasure Mountain Junior High School infield perimeter. The infield was not removed. Location at Richardson Flat that was utilized for disposal of material at the Treasure Mountain Junior High School. Area on the west side of the Treasure Mountain Junior High School building that was excavated by EPA's Emergency and Rapid Response Services contractor. Area on the west side of the Treasure Mountain Junior High School building that was backfilled. Area on the northwest side of the Treasure Mountain Junior High School building that was excavated. The area was fenced to support parking for a soccer tournament and school workers entering the building. Area on the southeast side of the Treasure Mountain Junior High School building adjacent to the recreation fields that was fenced off in preparation for a soccer tournament. Extent of excavation to protect the existing rock wall on the southwest side of the Treasure Mountain Junior High School building. Bike trail closure installed southwest of the Treasure Mountain Junior High School building. Silt fences installed along the bike trail southwest of the Treasure Mountain Junior High School building. Area on the east side of the Treasure Mountain Junior High School building adjacent to the recreation fields that was cleaned in preparation for a soccer tournament. Excavation on the west side of the Treasure Mountain Junior High School building. Load out of excavated material at the Treasure Mountain Junior High School. Area on the east side of the Treasure Mountain Junior High School building that was backfilled. Excavation of the Treasure Mountain Junior High School recreation fields. Excavation around the Treasure Mountain Junior High School backstops at the recreation fields. New sod placed on west side of Treasure Mountain Junior High School building. Public use of the Treasure Mountain Junior High School recreation fields during a city-wide soccer tournament. Dust control during excavation of the Treasure Mountain Junior High School recreation fields. New hydrant that was installed by the Park City School District to replace one that was damaged by EPA's Emergency and Rapid Response Services contractor during excavation. Notice placed around the Treasure Mountain Junior High School and recreation fields during the removal. Area southeast of the Treasure Mountain Junior High School building that was excavated. Rocked drainage channel being constructed in the Woodside Gulch source area. Area at the base of the Woodside Gulch source area that was excavated. Looking up the outfall of the northern erosion channel that formed beneath the access road at Treasure Hollow as a result of 2019 snow melt runoff. Looking up the southern erosion channel that formed beneath the access road at Treasure Hollow as a result of 2019 snow melt runoff. Looking from the trail down the southern erosion channel that formed beneath the access road at Treasure Hollow as a result of 2019 snow melt runoff. Trail damage caused by the southern erosion channel that formed beneath the access road at Treasure Hollow as a result of 2019 snow melt runoff. Looking up at the southern erosion channel that formed beneath the access road at Treasure Hollow as a result of 2019 snow melt runoff. Looking from the road down the northern erosion channel that formed at Treasure Hollow as a result of 2019 snow melt runoff. Looking along the road at the erosion channel that formed at Treasure Hollow as a result of 2019 snow melt runoff. Looking from the road down the southern erosion channel that formed at Treasure Hollow as a result of 2019 snow melt runoff. Looking up the northern erosion channel that formed beneath the access road at Treasure Hollow as a result of 2019 snow melt runoff. Looking along the road at the erosion channel that formed at Treasure Hollow as a result of 2019 snow melt runoff. Interception trench excavated near the top of the Treasure Hollow waste pile and awaiting erosion fabric/riprap. Ditch excavated near the top of the Treasure Hollow waste pile and awaiting erosion fabric/riprap to connect the upper interception trench with the main drainage ditch along the access road. Primary drainage ditch being excavated along the access road at the Treasure Hollow waste pile. View from the Treasure Hollow waste pile looking towards Park City. Sign placed around Treasure Hollow announcing EPA's efforts. Erosion damage in a ditch excavated by EPA at Treasure Hollow after a series of rainfall events in September 2019. Erosion fabric installed in a ditch that EPA excavated at the top of the Treasure Hollow waste pile to divert runoff from above the pile. Looking down the drainage ditch that EPA excavated along the west flank of the Treasure Hollow waste pile. Looking up the drainage ditch that EPA excavated along the west flank of the Treasure Hollow waste pile. Looking up the drainage ditch that EPA excavated along the west flank of the Treasure Hollow waste pile. Jenny's trail as is passes below the Treasure Hollow waste pile. Close up of erosion at Treasure Hollow after a single rainfall event in September, 2019. 2019 damage to the Treasure Hollow repository caused by erosion. 2019 damage to the Treasure Hollow repository caused by erosion. 2019 damage to the Treasure Hollow repository caused by erosion. Typical position of snow making equipment at low point of the grade of the Treasure Hollow mine waste repository. 2019 damage to the Treasure Hollow repository caused by erosion. 2019 damage to the Treasure Hollow repository caused by erosion. 2019 damage to the Treasure Hollow repository caused by erosion. 2019 damage to the Treasure Hollow repository caused by erosion. 2019 damage to the Treasure Hollow repository caused by erosion. 2019 damage to the Treasure Hollow repository caused by erosion. Note the snow making vault in the middle of the erosion cut. 2019 damage to the Treasure Hollow repository caused by erosion. 2019 damage to the Treasure Hollow repository caused by erosion. 2019 damage to the Treasure Hollow repository caused by erosion. Note the snow making vault in the middle of the erosion cut. 2019 damage to the Treasure Hollow repository caused by erosion. 2019 damage to the Treasure Hollow repository caused by erosion. 2019 damage to the Treasure Hollow repository caused by erosion. 2019 damage to the Treasure Hollow repository caused by erosion. Temporary trail crossing installed by EPA at the base of the Treasure Hollow mine waste repository. View of Treasure Mountain mine waste repository. Note the access road which crosses the repository. 2019 damage to the Treasure Hollow repository caused by erosion. 2019 damage to the Treasure Hollow repository caused by erosion. 2019 damage to the Treasure Hollow repository caused by erosion. Erosion fabric being placed in the ditch along the western flank of the Treasure Hollow repository. Temporary haul road and regrading the eastern flank of the Treasure Hollow repository below the access road that crosses the waste pile.. Constructing drainage ditch along the access road that crosses the Treasure Hollow repository. Damage to the Treasure Hollow repository caused by property tenants placing snow making equipment on the repository. Grouted in culvert under the access road that crosses the Treasure Mountain repository. Series of two parallel culverts installed beneath Jenny's Trail at the base of the Treasure Hollow repository. Lower repository grading in preparation for re-vegetation. Sign for Jenni's Trail diversion. Tailings area at upper-west section of Treasure Hollow Evidence of settling (see exposed hole) at Silver King East Tailings Pile. Water bottle for scale. Most down gradient section of drainage ditch in lower repository. Currently under construction. Drainage channel in Treasure Hollow. Looking up gradient from culvert crossing. Erosion mat and waddles installed by UPCM in Woodside Gulch at the concentrator near the Silver King Mill. Dump truck transporting soil up hill in lower repository Culvert outfall at base of Ontario waste pile. Drainage channel at upper section of Treasure Hollow Berm at base of Thaynes waste pile. Lower repository at Treasure Hollow. Culvert outfall and drainage channel in Treasure Hollow. Erosion mat installed by UPCM in Woodside Gulch at the concentrator near the Silver King Mill. Culvert leading under road in Treasure Hollow. Drainage channel at lower repository. Note culverts leading under Jenny's Trail. Thaynes waste pile. Grout applied to drainage channel in Treasure Hollow. Drainage channel along road in Treasure Hollow. Grout applied to drainage channel in Treasure Hollow. Drainage channel along base of Ontario waste pile. Tailings area at upper-west section of Treasure Hollow Berm below Judge-Alliance waste pile. Erosion mat installed by UPCM in Woodside Gulch at the concentrator near the Silver King Mill. Mine waste (see grey area abutting tree line) at upper-west area in Treasure Hollow. EPA Staging Area at top of Treasure Hollow. Evidence of mine waste migrating beyond berm at base of Thaynes waste pile. Evidence of settling (see exposed hole) at Silver King East Tailings Pile. Water bottle for scale. Culvert at base of Ontario waste pile. Drainage channel along east side of Treasure Hollow (looking uphill). Drainage channel along east side of Treasure Hollow. Evidence of settling (see exposed hole) at Silver King East Tailings Pile. Water bottle for scale. Drainage channel in tailings area upper-west of Treasure Hollow. Comstock Mine waste pile in Thaynes Canyon after construction of berms at its base. Work in progress of installing drainage ditch in lower repository at Treasure Hollow. Drainage ditch at upper section of Treasure Hollow Treasure Hollow lower repository. Thaynes waste pile. View looking down from Treasure Hollow. Note drainage ditches. Work sign posted at upper section of Treasure Hollow. Drainage ditch at toe of slope on Treasure Hollow lower repository. Note culvert under Jenni's Trail. Berm below Judge-Alliance waste pile. View looking down from Treasure Hollow. Note drainage ditches. Thaynes waste pile. Drainage ditch along eastern boundary of Treasure Hollow work area. Lower repository in Treasure Hollow work area. Note newly installed drainage ditches. Evidence of mine waste migration from Thaynes waste pile. Tailings area and drainage ditch in upper-west section of Treasure Hollow. Erosion mat installed by UPCM in Woodside Gulch at the concentrator near the Silver King Mill. Erosion mat installed by UPCM in Woodside Gulch at the concentrator near the Silver King Mill. California Mine waste pile in Thaynes Canyon after construction of berms at its base. Apex waste pile in Thaynes Canyon after construction of berms at its base. Tailings area along hillside in Treasure Hollow. Bern below Comstock Mine waste pile in Thaynes Canyon after construction of berms at its base. Drainage ditch at toe of slope in lower repository. Drainage ditch in upper-west tailings area in Treasure Hollow Apex waste pile in Thaynes Canyon after construction of berms at its base. California Mine waste pile in Thaynes Canyon after construction of berms at its base. Drainage channel running along road in Treasure Hollow Woodside Gulch above King Road. Sign at Comstock Mine waste pile in Thaynes Canyon after construction of berms at its base. Erosion mat installed by UPCM in Woodside Gulch at the concentrator near the Silver King Mill. Completed erosion control ditch and erosion mat. Completed erosion control ditch and hydroseeding of disturbed areas. Completed hydroseeding of the lower repository. Completed hydroseeding of the lower repository. Completed hydroseeding of the lower repository. Completed hydroseeding of the lower repository. Completed hydroseeding of the lower repository. Completed hydroseeding of the lower repository. Completed erosion control ditch and hydroseeding of disturbed areas. Completed hydroseeding and erosion mat on the lower repository. Completed erosion control ditch and hydroseeding of disturbed areas. Completed erosion control ditch and hydroseeding of disturbed areas. Completed erosion control ditch and hydroseeding of disturbed areas. Completed hydroseeding of the lower repository. Completed water bar, waddle and hydroseeding of the lower repository. Completed hydroseeding of the lower repository. Completed erosion control ditch and hydroseeding of disturbed areas. Completed hydroseeding of the lower repository. Completed erosion control ditch and hydroseeding of disturbed areas. Completed erosion control ditch and hydroseeding of disturbed areas. Completed erosion control ditch and hydroseeding of disturbed areas. Completed erosion control ditch and hydroseeding of disturbed areas. Completed erosion control ditch and hydroseeding of disturbed areas. Completed erosion control ditch and hydroseeding of disturbed areas. Completed erosion control ditch and hydroseeding of disturbed areas. Completed erosion control ditch and hydroseeding of disturbed areas. New rock placed at the transition to pavement of the access road to Treasure Hollow. New rock placed at the transition to pavement of the access road to Treasure Hollow. New rock placed at the transition to pavement of the access road to Treasure Hollow. Installing rip rap in a drainage ditch along the access road that crosses the repository. Exposing buried power lines for snow making equipment owned by Vail Resorts. The power lines need to be relocated under a drainage ditch along the access road that crosses the repository. Installing erosion control fabric in a drainage ditch along the access road that crosses the repository during an early season snow storm. Vail Resorts personnel placing snow making equipment on the repository. Treasure Hollow from below during 2020 spring snow melt. Treasure Hollow from below during 2020 spring snow melt. Treasure Hollow access road and drainage ditch during 2020 spring snow melt. Trail across bottom of Treasure Hollow during 2020 spring snow melt. Treasure Hollow looking downhill from the access road during 2020 spring snow melt. Treasure Hollow looking downhill from the access road during 2020 spring snow melt. Note minor failure of berm above the snow making utility line. Area where water enters culvert beneath access road during 2020 spring snow melt. Vehicular damage to berm along King Road at Upper Woodside Gulch. West Treasure Hollow drainage ditch below culvert from below during 2020 spring snow melt. Treasure Hollow from below during 2020 spring snow melt. Seed germination at Treasure Hollow during spring snow melt. Treasure Hollow from access road during 2020 spring snow melt. Bike erosion along trail at the base of Treasure Hollow from during 2020 spring snow melt. Treasure Hollow from above during 2020 spring snow melt. Treasure Hollow from access road during 2020 spring snow melt. Treasure Hollow from access road after 2020 spring snowmelt. Treasure Hollow after 2020 spring snowmelt. Treasure Hollow after 2020 spring snowmelt. Treasure Hollow after 2020 spring snowmelt. Treasure Hollow after 2020 spring snowmelt. Treasure Hollow after 2020 spring snowmelt. Treasure Hollow after 2020 spring snowmelt. Treasure Hollow after 2020 spring snowmelt.