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United States Environmental Protection Agency
Region 10 Cleanup: Bunker Hill Mining & Metallurgical
Serving the people of Alaska, Idaho, Oregon, Washington and 270 Native Tribes

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Photo Gallery
2000 Fall planting in Government Gulch
Helicopter flies over tarnished hills.

Yard Cleanup (Top)
During residential yard cleanup, soils above 1000 ppm lead are generally removed to a depth of one foot and replaced with clean soil and grass. Through 2000, approximately 1,700 residential properties were completed.
Bobcat digs up lawnHome with partial lawn.Bobcat removes yard.


Smelterville Flats Tailings Removal (Top)
Tailings have been removed in the Smelterville Flats and have also been removed from the South Fork of the Coeur d’Alene River north of the Central Impoundment Area.
Loading the truck to remove tailings in Smelterville FlatsTailings removal upstream of Theater Bridge. Work was conducted by the Bunker Limited Partnership (looking upstream).Another view of the Smelterville Flats tailing removalTailings removal upstream of Theater Bridge. Work was conducted by the Bunker Limited Partnership (looking downstream).
Tailings were removed from the Smelterville Flats segment of the South Fork of the Coeur d'Alene River by diverting the river for a short time. (River diverted)Tailings were removed from the Smelterville Flats area near the Shoshone County Airport (Smelterville Flats tailings before removal)Tailings were removed from the Smelterville Flats area near the Shoshone County Airport (Smelterville Flats tailings before removal)Tailings were removed from the Smelterville Flats segment of the South Fork of the Coeur d'Alene River by diverting the river for a short time. (River diverted)River diversion photo looking at the dewatering pump (foreground) which catches water leaking through the diversion structure.
Placement of topsoil and grass seeding takes place after tailings removal to re-establish the natural floodplain.
Seeded grass growing after trailings removedGrass seedlings well established
A plastic liner is being placed on top of the CIA to minimize infiltration of rainwater into the mine waste tailings. This will reduce metals loading to the river, which is mostly comprised of zinc.
A plastic liner is being placed on top of the CIA to minimize infiltration of rainwater into the mine waste tailings. This will reduce metals loading to the river, which is mostly comprised of zinc.A plastic liner is being placed on top of the CIA to minimize infiltration of rainwater into the mine waste tailings. This will reduce metals loading to the river, which is mostly comprised of zinc.A plastic liner is being placed on top of the CIA to minimize infiltration of rainwater into the mine waste tailings. This will reduce metals loading to the river, which is mostly comprised of zinc.
A plastic liner is being placed on top of the CIA to minimize infiltration of rainwater into the mine waste tailings. This will reduce metals loading to the river, which is mostly comprised of zinc.A plastic liner is being placed on top of the CIA to minimize infiltration of rainwater into the mine waste tailings. This will reduce metals loading to the river, which is mostly comprised of zinc.A plastic liner is being placed on top of the CIA to minimize infiltration of rainwater into the mine waste tailings. This will reduce metals loading to the river, which is mostly comprised of zinc.
Smelter operating in the late 1970's
Smelter operating in the late 1970's
Miner extracting ore from the Bunker Hill Mine
Miner extracting ore from the Bunker Hill Mine
Flow and water quality measurements are being performed in the Bunker Hill Mine to better understand how the acid mine drainage develops. This information will be used to reduce the generation of the acidic water to the extent possible and in evaluating
Flow and water quality measurements are being performed in the Bunker Hill Mine to better understand how the acid mine drainage develops. This information will be used to reduce the generation of the acidic water to the extent possible and in evaluating treatment options.
A new mine water line was installed to convey low pH water from the Kellogg Tunnel to the lined storage pond.
A new mine water line was installed to convey low pH water from the Kellogg Tunnel to the lined storage pond.
The lined storage pond stores the low pH acid mine drainage awaiting treatment
The lined storage pond stores the low pH acid mine drainage awaiting treatment.
The CTP treats up to 1,400 gallons per minute (gpm) of acid mine drainage from the Bunker Hill mine and limited amounts of water from the decontamination stations on McKinley Avenue. The treatment process relies on pH adjustment with lime to precipitate
The CTP treats up to 1,400 gallons per minute (gpm) of acid mine drainage from the Bunker Hill mine and limited amounts of water from the decontamination stations on McKinley Avenue. The treatment process relies on pH adjustment with lime to precipitate metals, creating a waste sludge.

The A4 gypsum pond is at the mouth of Magnet Gulch and is being consolidated in place by Stauffer/Rhone Poulenc, Inc. Other gypsum located higher in the Magnet drainage was deposited in the CIA.
Picture of gypsum pond preparationpicture of gypsum pond empty
Revegetation efforts continue on the Hillsides via helicopter to adjust soil pH and establish grass. This effort will build organic matter and free essential nutrients to help the millions of trees that have been planted in previous efforts over the last several decades.
Revegetation efforts continue on the Hillsides via helicopter to adjust soil pH and establish grass. This effort will build organic matter and free essential nutrients to help the millions of trees that have been planted in previous efforts over the lastRevegetation efforts continue on the Hillsides via helicopter to adjust soil pH and establish grass. This effort will build organic matter and free essential nutrients to help the millions of trees that have been planted in previous efforts over the last
Revegetation efforts continue on the Hillsides via helicopter to adjust soil pH and establish grass. This effort will build organic matter and free essential nutrients to help the millions of trees that have been planted in previous efforts over the lastRevegetation efforts continue on the Hillsides via helicopter to adjust soil pH and establish grass. This effort will build organic matter and free essential nutrients to help the millions of trees that have been planted in previous efforts over the lastRevegetation efforts continue on the Hillsides via helicopter to adjust soil pH and establish grass. This effort will build organic matter and free essential nutrients to help the millions of trees that have been planted in previous efforts over the last


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Point of contact: Debra Sherbina
E-Mail: sherbina.debra@epa.gov
Phone Number: (206) 553-0247
Last Updated: 07/12/2006