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Argonaut Mine Tailings Site

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Photo of mine tailings visible on the north wall of the excavation along the Thomas's fence line. Tailings are very black in color and are fine grained silty sands with a high moisture content. <br />Date Taken: 3/17/2015<br />Category: Removal Action<br />Latitude: 38.3597444444444<br />Longitude: -120.789161111111<br />Tags: presentation
View of completed fence across pathway to top of the concrete tailings dam and basin.<br />Date Taken: 11/14/2013<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:
Fencing and posting access to top of concrete tailings dam<br />Date Taken: 11/14/2013<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:
Kennedy Mine Tailings Wheel #1 is still standing. The wheel's diameter is 68 feet. Lining the wheel's inner surface are 178 buckets (18x8") which lifted the waste about 48'. <br />Date Taken: 9/26/2013<br />Category: Kennedy Mine <br />Latitude: <br />Longitude: <br />Tags:
Kennedy Mine Tailings Wheel in Glass Building at Kennedy Tailings Wheel Park in Jackson. The wheel's diameter is 68 feet. Lining the wheel's inner surface are 178 buckets (18x8") which lifted the waste about 48'. <br />Date Taken: 9/26/2013<br />Category: Kennedy Mine <br />Latitude: <br />Longitude: <br />Tags:
View of Tailings Pile facing north. The vacant property is located at the corner of Pioneer St. and Argonaut Ln. It is approx. 0.39 acres and consists of two parcels. There are very high concentrations of Arsenic and Iron in the soils.<br />Date Taken: 9/23/2013<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:
View of Argonaut Mine Tailings Site, Thickener Basin. Note the circular basin is approx. 80 feet in diameter.<br />Date Taken: 11/14/2013<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:
Close Up View of Coal Tar Tank. Note coal tar is flaking off the side of the tank onto the ground. <br />Date Taken: 11/14/2013<br />Category: Site Photo<br />Latitude: 38.35749<br />Longitude: -120.78984<br />Tags:
View of tall vertical cylindrical tank and horizontal rectangular trough for transferring liquids to wide cylindrical mixing tank<br />Date Taken: 11/14/2013<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:
Close up View of the Coal Tar Tumbling Box. Note the large steel ribs and redwood planks for the barrel (barely visible in the back of barrel). <br />Date Taken: 11/14/2013<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:
View of Mixing Tank in the former Cyanide Plant area. Mixing paddles can be seen through the windows.<br />Date Taken: 11/14/2013<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:
View of possible concrete flotation tank in former Cyanide Plant area. Note horizontal trough at top of tank and sampling ports along vertical pipes. <br />Date Taken: 11/14/2013<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:
View of concrete coal tar and hopper tanks in Cyanide Plant area<br />Date Taken: 11/14/2013<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:
Photo of one of the 13 inverted arches<br />Date Taken: 11/14/2013<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:
Drainage hole cut into the southern end of the concrete dam <br />Date Taken: 11/14/2013<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:
View from top of multiple arched concrete dam facing north<br />Date Taken: 11/14/2013<br />Category: Site Photo<br />Latitude: 38.3526575869786<br />Longitude: -120.782525616016<br />Tags: presentation
View of multiple arches from top of dam facing south. The reservoir was silted to within 1.5 feet of the top of the dam. <br />Date Taken: 11/13/2013<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:
Eastwood Multiple Arched Dam and view of buttress, cross brace and crew clearing away vegetation<br />Date Taken: 11/13/2013<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:
Former Cyanide Plant - high tower concrete processing tank <br />Date Taken: 9/24/2013<br />Category: Site Photo<br />Latitude: 38.356615<br />Longitude: -120.788009<br />Tags: plant, cyanide
Mine Tailings Spoils on AOC-5 (Warner Property). Photo facing west.<br />Date Taken: 9/26/2013<br />Category: Site Photo<br />Latitude: <br />Longitude: <br />Tags:

Photo of mine tailings visible on the north wall of the excavation along the Thomas's fence line. Tailings are very black in color and are fine grained silty sands with a high moisture content. View of completed fence across pathway to top of the concrete tailings dam and basin. Fencing and posting access to top of concrete tailings dam Kennedy Mine Tailings Wheel #1 is still standing. The wheel's diameter is 68 feet. Lining the wheel's inner surface are 178 buckets (18x8 Kennedy Mine Tailings Wheel in Glass Building at Kennedy Tailings Wheel Park in Jackson. The wheel's diameter is 68 feet. Lining the wheel's inner surface are 178 buckets (18x8 View of Tailings Pile facing north. The vacant property is located at the corner of Pioneer St. and Argonaut Ln. It is approx. 0.39 acres and consists of two parcels. There are very high concentrations of Arsenic and Iron in the soils. View of Argonaut Mine Tailings Site, Thickener Basin. Note the circular basin is approx. 80 feet in diameter. Close Up View of Coal Tar Tank. Note coal tar is flaking off the side of the tank onto the ground. View of tall vertical cylindrical tank and horizontal rectangular trough for transferring liquids to wide cylindrical mixing tank Close up View of the Coal Tar Tumbling Box. Note the large steel ribs and redwood planks for the barrel (barely visible in the back of barrel). View of Mixing Tank in the former Cyanide Plant area. Mixing paddles can be seen through the windows. View of possible concrete flotation tank in former Cyanide Plant area. Note horizontal trough at top of tank and sampling ports along vertical pipes. View of concrete coal tar and hopper tanks in Cyanide Plant area Photo of one of the 13 inverted arches Drainage hole cut into the southern end of the concrete dam View from top of multiple arched concrete dam facing north View of multiple arches from top of dam facing south. The reservoir was silted to within 1.5 feet of the top of the dam. Eastwood Multiple Arched Dam and view of buttress, cross brace and crew clearing away vegetation Former Cyanide Plant - high tower concrete processing tank Mine Tailings Spoils on AOC-5 (Warner Property). Photo facing west. Erosion Chasm Cut Through Grey Sands Tailings Close Up of Tailings Spoils on Warner Property Vertical column tank at the Cyanide Plant Coal Tar Tumbling Box. Tailings were pre-coated with 4 lbs of coal tar per ton. In the flotation process the coal tar bound with the gold flecks and floated to the top. The coal tar was roasted and the gold recovered. Photo taken from the base of the concrete dam facing one of the arches. Leakage was observed through open cracks and seams in the concrete structure. Photo showing severe erosion of the grey sands tailings pile. The was the sand and slime waste materials generated from the on-site cyanide processing plant Argonaut Mine Head Frame located 1/2 mile northeast of the Argonaut Mine Tailings Site Multiple Arched Concrete Dam barely visible from corner of Sutter Street and Argonaut Drive. Giant sinkhole in the historic impoundment on the upstream side of the earth tailings dam Semi-Processed Ore Storage Area facing east. Semi-processed Ore Storage Area on 5-acre section of 64.8 acre site (facing south). Maximium arsenic concentration was 39,000 mg/kg. Area is devoid of vegetation. Eastwood Multiple Arched Concrete Dam START collecting waste sample from large steel and redwood tumbling box. It was probably used to precoat tailings with coal tar Large round concrete tanks that were 25' in diameter and 10' deep used in the cyanide processing area Large round concrete tanks that were 25' in diameter and 10' deep used in the cyanide processing area Semi-processed ore disposal area. This 5-acre area has arsenic concentrations as high as 39,000 mg/kg. START checking air monitoring station - Gillian pumps and filters on Thomas' property fence line bordering the Warner property View of area where tailings from Warner property are being used to fill in a low area on 5-acre parcel and future location of engineered repository. Compactor working on tailings hauled from the Warner property and deposited on 5-acre Van Horn property. The beginning of the mine waste repository. ERRS providing dust suppression during excavation activities to control fugitive emissions Excavator loading tailings into dump truck on the Warner property Excavator loading tailings into a dump truck. Plastic sheeting used to prevent tracking of contamination onto city street. Excavation Area and Nearby Residential Structures Excavation Activities Excavation Activities Sidewalls and Air Sampling Activities Load / Unload Activities Related to Excavation and Remediation Load / Unload Activities Excavator loading tailings into dump truck on the Warner property View of exposed mill tailings on the north wall of the excavation on the Warner property. The tailings were in a buried trench. Arsenic levels are 25,000 mg/kg and action level is 100 mg/kg. View of dump truck delivering a load of tailings and contaminated soils to the repository on the Van Horn property View of START monitoring for mercury vapors using a Lumex. Excavator is digging mill tailings out of the buried trench Warning barrier fence panels placed at the bottom of the AOC-5 excavation. ERRS beginning to backfill the AOC-5 excavation with import soil from Lot 9. ERRS placing geomembrane lining on the repository area (AOC-1) approximately 0.3 acres. ERRS backfilling AOC-5 excavation to original grade. ERRS complete backfill to original grade on the AOC-5 property. Repository area (AOC-1) with 2-foot clean soil cap. Alignment for drainage pipe to be installed by ERRS (running from east to west) on the AOC-5 property. ERRS digging trench to install drainage pipe on the AOC-5 property. Import soil from Lot 9 being placed at the repository area (AOC-1) to complete two-foot lift. View of completed backfill, topsoil cover and drainage swale on the Warner property View of repository, rock capillary barrier and installation of filter fabric prior to placement of 2 feet of clean imported soil. Photo of hydroseed application on the Warner property Base of Argonaut EMAD Concrete structural problems at EMAD, cracked/failing tie beam support with exposed cable. Concrete structural problems at base of EMAD, cracks in support tie beam and exposed metal cable. AOC1 - repository with hydroseed, facing northeast. Concrete dam structural problems, including horizontal cracks in dam face.