Author: Emily Hasz
THE DIRT: The history of roads in the Silver Valley Pt. 2
As noted in part one of this series, the Silver Valley’s mining legacy runs deeper than its mountains—it is built right into the roads beneath our feet. For decades, mine waste was routinely used to build and maintain local roadways, rights-of-way, and driveways. Though this practice is long behind us, its impact can still surface today, especially for the road crews, utility workers, and contractors who continue to work in these areas.
Due to the widespread depth and distribution of contamination throughout the Bunker Hill Superfund site, complete removal of these waste materials was not economically feasible, nor logistically possible. As such, only partial removals of contaminated materials could be completed. Remediation depths vary, but most clean barriers will be either 6 or 12 inches deep, creating a clean protective layer over the remaining contaminated waste.
Roadbeds and rights-of-way are common places to run underground utilities such as fiber, gas, water, and sewer. This means most of the utility lines found within or adjacent to roadbeds throughout the Silver Valley were placed in contaminated materials. When utility, roadway, or ditch maintenance is needed, our local contractors are faced with the task of performing necessary repairs while also maintaining and restoring any remediated barriers they may encounter. This can be a big challenge, taking more time and effort than working in unremediated areas. To ensure this work is done properly and safely, contractors are encouraged to take the ICP class before working within the Superfund site.
Crews must protect remediated barriers by excavating and separating the clean barrier materials, then separating and isolating any of the deeper contaminated materials. Mishandling of contaminated materials during excavation can result in recontamination of clean areas and expose children and those near construction sites to lead and other metal contaminants. The responsible handling and disposal of these materials ensures that public health and the safety of the surrounding environment are protected. When all work is complete, contractors must ensure that the remediated barriers are restored to their original condition. While this process adds a layer of complexity to their everyday tasks, our local construction crews have mastered the methods needed to complete their work while protecting the remediation barriers that prevent accidental exposure to the contaminants that remain in our area. We thank them for their hard work and continued efforts to work safely and protect us all!
The Dirt is a series of informative articles focused on all aspects of cleanup efforts associated with the Bunker Hill Superfund Site. Our goal is to promote community awareness of contamination issues, to provide tools for protecting public health, and to keep the community informed of current and future cleanup projects. The Dirt is a group of committed and local experts from multiple agencies, including the Basin Environmental Improvement Project Commission, Panhandle Health District, Shoshone County, Silver Valley Economic Development Corporation, and the Idaho Department of Environmental Quality.
THE DIRT: The history of roads in the Silver Valley
The Silver Valley’s history is deeply rooted in mining. What started with a few mining claims quickly exploded into an industry that was created and remains the backbone of our community.
From 1886 to 1997, it is estimated that Silver Valley mines processed and concentrated approximately 130 million metric tons of metal-bearing materials, generating 109 million metric tons of mill tailings as waste byproducts. The topography of the region provided limited flat land for stockpiling and saving tailings and this became problematic for most of the mills throughout the region.
While the most convenient and common method of tailings disposal was to directly discharge them into local streams and creeks, some of these materials were used for more productive means.
One of the most common uses was the construction of local freeways, roads, railroad ballast, and driveways. For example, during the early 1900s, the City of Wallace procured and maintained a stockpile of tailings from the Standard-Mammoth Millsite. For years, the city used horse-drawn buggies and manual labor to dump and spread tailings throughout town for new roadways and for the maintenance of pre-existing roads.
In the 1960s approximately 2.6 million tons of tailings were removed from the Bunker Hill Mine’s impoundment pond and were used to build the roadbed for Interstate 90 through the Smelterville and Kellogg areas. Approximately one million tons of tailings were also used to create the Interstate 90 roadbed near Cataldo using dredge material placed between two parallel dikes. In addition to large-scale road projects, it was also common for homeowners and contractors to use these materials on smaller projects, such as to build and improve driveways, as fill materials, or for use as a base for concrete slabs, and sidewalks.
While these materials were utilized for their convenience and practicality, they unintentionally became a major exposure source of lead, arsenic, and other metal contaminants for both humans and the environment.
The abundance of these cheap, or often free, materials naturally encouraged their widespread use. This caused contamination to be spread to areas that would not have been impacted by mine waste.
When the Bunker Hill Superfund site was established in 1983 and cleanup efforts began, road shoulders, rights of ways, ditch lines, and driveways were a major consideration for the cleanup remedy.
Since cleanup began, thousands of driveways and hundreds of miles of road shoulders have been remediated to remove surface contaminants and replaced them with clean materials, creating a protective barrier between us and the contaminated materials underneath. The next time you are out for a drive, consider what you might find below the asphalt under your tires.
The Dirt is a series of informative articles focused on all aspects of cleanup efforts associated with the Bunker Hill Superfund Site. Our goal is to promote community awareness of contamination issues, to provide tools for protecting public health, and to keep the community informed of current and future cleanup projects. The Dirt is a group of committed and local experts from multiple agencies, including the Basin Environmental Improvement Project Commission, Panhandle Health District, Shoshone County, Silver Valley Economic Development Corporation, and the Idaho Department of Environmental Quality.
THE DIRT: CIA sludge pond capped
The Central Impoundment Area (CIA) has been a notable feature in the Silver Valley for nearly a century. Constructed in 1928, the CIA was designed to contain vast amounts of mine tailings and waste generated from decades of milling and smelting operations at the Bunker Hill Mining and Metallurgical Complex. Before its creation, tailings were routinely discharged directly into the South Fork of the Coeur d’Alene River, contributing to widespread contamination throughout the Basin. Over time, the CIA grew into one of the largest repositories in the region, ultimately holding an estimated 24 million cubic yards of mine waste.
The Central Treatment Plant (CTP) treats groundwater and acid mine water to remove the metals before the water enters the South Fork of the Coeur d’Alene River. The process of removing the metals creates a waste product called sludge that needs to be properly stored. The sludge pond was developed by the mine for this purpose.
In June of 2023, after 30 years of service, the historic sludge pond reached its capacity and could no longer accept waste. Placement of sludge from the CTP was shifted to the new Sludge Impoundment Area (SIA). The sludge pond was the only area on top of the CIA where a cap was not installed, due to active sludge placement from the CTP. The new SIA was installed in conjunction with upgrades to the CTP. The SIA was completed in Fall 2021 and has a design capacity of 30 years.
In the spring of 2024, the design for the cap of the sludge pond was completed. The design integrated the use of contaminated materials and material from the former sludge pond access road to fill the historic sludge pond and create a final grade that would promote drainage off the pond area once capping was complete. A large amount of effort was put into planning and communication for this project, as a portion of the former sludge pond access road will continue to be used for the ongoing operation of the CTP. In addition, access to this area was required and had to be maintained. With planning complete, the construction work began in May of 2025. The first phase of the project utilized materials onsite to build the grade of the designed cap. With the final capping completed, a liner system was installed and tied into the existing CIA cap. Clean fill material was brought in to cover the newly capped area prior to hydroseeding. Work has finished at the site, but inspections will continue into 2026 to ensure that seeding in the area is successful.
The Dirt is a series of informative articles focused on all aspects of cleanup efforts associated with the Bunker Hill Superfund Site. Our goal is to promote community awareness of contamination issues, to provide tools for protecting public health, and to keep the community informed of current and future cleanup projects. The Dirt is a group of committed and local experts from multiple agencies, including the Basin Environmental Improvement Project Commission, Panhandle Health District, Shoshone County, Silver Valley Economic Development Corporation, and the Idaho Department of Environmental Quality.
THE DIRT: 2025 Lead Health Intervention Blood Screening
Summer is the time for camping, biking, hiking, and swimming. We explore the great outdoors and, in so doing, put ourselves at risk for lead exposure. Hotter, drier, and dustier conditions also increase this risk. Anyone who recreates within the Bunker Hill Superfund Site may be exposed to lead dust. Because this is a known health risk, Panhandle Health District’s Lead Health Intervention Program (LHIP) provides a free blood lead screening event each year.
The LHIP blood lead screening provides families and individuals with the opportunity to check their summer lead exposures. This year’s “Under the Sea” screening was an underwater-themed event, providing attendees with information on lead exposure and prevention and fun giveaways. Anyone who had their blood lead level tested had the opportunity to enter a raffle for a goldfish and their bowl. Children six months to six years of age who live within the site received a $50 incentive following testing. Children in this age range are at greater risk of the effects of lead exposure. This incentive encourages testing at this critical stage in a child’s development.
Blood lead tests are conducted by first washing the testing area thoroughly with soap and water. A nail brush is used if hands are especially dirty. Testing is performed by Shoshone Medical Center’s excellent staff. A finger-poke test is performed, and results are available in a few minutes. If the results from the initial finger-prick test show an elevated blood lead level, a venous draw is then performed for confirmation. Free consultations are offered to individuals with elevated blood lead levels. During these consultations, LHIP staff determines possible sources of lead exposure, and recommendations are provided to avoid further exposure.
This year, over 350 individuals elected to be tested for summer lead exposure. If you missed your opportunity to be tested, please visit cdabasin.idaho.gov or call Panhandle Health District’s Kellogg office at 208-783-0707 to request your free blood lead test.
The Dirt is a series of informative articles focused on all aspects of cleanup efforts associated with the Bunker Hill Superfund Site. Our goal is to promote community awareness of contamination issues, to provide tools for protecting public health, and to keep the community informed of current and future cleanup projects. The Dirt is a group of committed and local experts from multiple agencies, including the Basin Environmental Improvement Project Commission, Panhandle Health District, Shoshone County, Silver Valley Economic Development Corporation, and the Idaho Department of Environmental Quality.
THE DIRT: Stormwater management in the Silver Valley
The Silver Valley has long been vulnerable to flooding during spring runoff, and one major disaster made clear how these events can threaten not only public safety but also the progress of environmental cleanup. The flooding event at Milo Creek in 1997 was especially significant, it not only caused widespread damage but also re-contaminated several properties that had already undergone remediation. In response, Milo Creek became the focus of a collaborative effort that led to major stormwater infrastructure upgrades. These upgrades were designed not just to mitigate flooding, but also to protect the integrity of past and future remediation efforts.
Following the improvements in Milo Creek, stormwater systems were enhanced throughout the Silver Valley, particularly in the large gulches that can carry massive volumes of runoff during major flood events. Most of these improvements focused on capturing stormwater and piping it directly into the South Fork of the Coeur d’Alene River to reduce the risk of localized flooding and erosion.
While redirecting stormwater away from flood-prone areas is beneficial, directly discharging it into the river raises serious concerns for water quality. As stormwater flows over roads, rooftops, parking lots, and other hard surfaces, it picks up a variety of pollutants—such as sediment, oil, grease, fertilizers, bacteria, and excess nutrients. When this untreated runoff enters the South Fork, it can degrade water quality, harm aquatic life, and contribute to nutrient loading. This nutrient pollution, especially phosphorus, can lead to algal blooms and low oxygen levels that damage ecosystems and impact water bodies all the way downstream to Coeur d’Alene Lake.
Recognizing the urgency of this issue, Governor Brad Little’s Leading Idaho Initiative has prioritized reducing nutrient loading in the Coeur d’Alene Lake watershed. Under this initiative, state funding has been allocated to support Kellogg’s stormwater improvement projects that address phosphorus and other contaminants found in runoff.
So far, three phases of stormwater projects have been completed or are underway. Each project is aimed at reducing the impact of stormwater through filtration and infiltration techniques that remove pollutants before they reach the river. Pilot projects have tested innovative approaches for slowing runoff and allowing it to soak into the ground. Treatment systems have been installed to capture and remove debris, sediment, and oil from the water. Infiltration swales throughout the city are also helping to reduce the volume of water that would otherwise flow directly into the river by allowing it to naturally infiltrate into the soil.
Once fully implemented, these efforts will treat approximately 75% of the stormwater in Kellogg. These projects represent a significant investment in both environmental protection and community resilience, helping ensure that the Silver Valley’s recovery from past contamination is protected for generations to come.
The Dirt is a series of informative articles focused on all aspects of cleanup efforts associated with the Bunker Hill Superfund Site. Our goal is to promote community awareness of contamination issues, to provide tools for protecting public health, and to keep the community informed of current and future cleanup projects. The Dirt is a group of committed and local experts from multiple agencies including the Basin Environmental Improvement Project Commission, Panhandle Health District, Shoshone County, Silver Valley Economic Development Corporation, and the Idaho Department of Environmental Quality.
THE DIRT: Join the annual Bunker Hill Superfund Site tour
The Basin Environmental Improvement Project Commission (BEIPC) invites the public to attend its annual Bunker Hill Superfund Site Cleanup Tour on Wednesday, Aug. 27. The event offers a rare, firsthand look at environmental remediation and restoration efforts in the Silver Valley, one of the nation’s most significant cleanup initiatives.
The day begins at 9 a.m. with BEIPC’s quarterly meeting at the Panhandle Health District office, 35 Wildcat Way in Kellogg. The meeting will include updates on ongoing projects, including Coeur d’Alene Lake shoreline sampling and the proposed location for a Lower Basin Waste Consolidation Area. The meeting will adjourn at 10:40 a.m., followed by a guided field tour.
The tour starts at 10:50 a.m. at Gene Day Park in Osburn, where attendees will hear from David Van de Riet of Idaho Fish and Game and Rebecca Stevens of the Coeur d’Alene Tribe about recent restoration efforts. Participants are encouraged to bring a sack lunch and water.
Following lunch, the tour will continue to the East Fork Ninemile Basin. Representatives from the Environmental Protection Agency and the Coeur d’Alene Work Trust will provide updates on completed priority cleanup work in the area. The watershed is a key focus due to its legacy of mining-related heavy metal pollution. Stops will include the East Fork Ninemile Waste Consolidation Area, the Interstate Mill Site and the Dayrock Complex.
After a brief stop in Wallace, the final leg of the tour will be at the Page Repository, where the Idaho Department of Environmental Quality will lead a tour of ongoing waste management activities. The event will conclude in Kellogg around 3:30 p.m.
This tour is a unique opportunity for community members, local leaders and stakeholders to engage with project staff, observe collaborative cleanup efforts and gain insight into the work still ahead.
Registration is required and space is limited. To reserve a seat, contact Gail Yost, assistant to the BEIPC executive director, at gail.yost@deq.idaho.gov or 208-783-2548. For updates and the full meeting agenda, visit www.basincommission.com.
The Dirt is a series of informative articles focused on all aspects of cleanup efforts associated with the Bunker Hill Superfund Site. Our goal is to promote community awareness of contamination issues, to provide tools for protecting public health, and to keep the community informed of current and future cleanup projects. The Dirt is a group of committed and local experts from multiple agencies including the Basin Environmental Improvement Project Commission, Panhandle Health District, Shoshone County, Silver Valley Economic Development Corporation, and the Idaho Department of Environmental Quality.
THE DIRT: EPA seeks public input for 5-Year Review
The U.S. Environmental Protection Agency started its sixth Five-Year Review of the Bunker Hill Superfund site last month. The purpose of a Five-Year Review is to evaluate the existing remedy and determine if it continues to protect people’s health and the environment. EPA’s evaluation of the remedy, along with its findings and conclusions, will be included in this report. Any deficiencies found in the remedy will be noted along with potential ways to address them.
The first Five-Year Review was completed in June 2000 following the start of the Superfund cleanup actions. This process repeats every five years as required by the Comprehensive Environmental Response, Compensation, and Liability Act.
The Bunker Hill Superfund site was contaminated by historic mine waste disposal practices and smelting activities, which left harmful levels of metals such as lead, arsenic, cadmium, and zinc. These metals are dangerous to both humans and wildlife. EPA’s Five-Year Reviews help monitor the impact of cleanup activities and determine whether any changes are needed.
EPA is inviting the community to participate in the current review. Any individual who lives, works, recreates or has an interest in this area is invited to share their thoughts and ideas about the site. While collecting community input for Five-Year Reviews is not required by law, it is an EPA best practice and helps the agency understand local concerns.
Interested participants should send feedback via email to EPA Community Involvement Coordinator Rafi Ronquillo at ronquillo.rafi@epa.gov. The deadline for feedback is Aug. 31. The current Five-Year Review is expected to be finished in September 2026 and published the following month.
Past Five-Year Reviews can be found on EPA’s Bunker Hill Superfund site profile webpage: https://www.epa.gov/superfund/bunker-hill. This page provides access to documentation related to the site. You can also sign up for the EPA’s e-mail list to receive any future site-related updates.
The Dirt is a series of informative articles focused on all aspects of cleanup efforts associated with the Bunker Hill Superfund Site. Our goal is to promote community awareness of contamination issues, to provide tools for protecting public health, and to keep the community informed of current and future cleanup projects. The Dirt is a group of committed and local experts from multiple agencies, including the Basin Environmental Improvement Project Commission, Panhandle Health District, Shoshone County, Silver Valley Economic Development Corporation, and the Idaho Department of Environmental Quality.
THE DIRT: Understanding Permits for Working Near Water in the Coeur d’Alene Basin
Working near water in the Coeur d’Alene Basin often requires obtaining one or more permits, particularly when wetlands are involved. These permits ensure that restoration, construction or development activities are carried out responsibly to protect aquatic ecosystems, water quality and public resources. This article gives a summary of key permits commonly required, with a focus on activities affecting wetlands.
Wetland-related activities: Section 404 and 401 Permits
A critical permit for projects impacting wetlands, or any Waters of the United States, is the Section 404 Permit, administered by the U.S. Army Corps of Engineers (ACOE). This permit is required when dredged or fill material is discharged into rivers, lakes, streams or wetlands. Wetlands are considered protected due to their essential roles in water filtration, flood control and habitat provision.
A Section 404 Permit typically includes conditions from a 401 Water Quality Certification, issued by the Idaho Department of Environmental Quality (DEQ), Coeur d’Alene Tribe or EPA, depending on the project’s location. This certification ensures that the proposed activity complies with state or tribal water quality standards.
Application for these permits is streamlined through a Joint Application Form (between Idaho Department of Lands (IDL), Idaho Department of Water Resources (IDWR), and ACOE), which covers multiple regulatory requirements. Fees vary. General (Nationwide) permits are often free, while individual permits may cost $10–$100.
Other permits for working near water
· Idaho Stream Channel Alteration Permit: Required for any activity that alters the shape, direction, or flow of a stream. This applies to material removal or placement within the high-water mark. Issued by the Idaho Department of Water Resources (IDWR), the permit costs $20.
· Encroachment Permits: These are necessary for structures such as docks, pilings and bank stabilization along navigable waters, including Lake Coeur d’Alene and its rivers. Issued by the IDL, IDWR or the Coeur d’Alene Tribe (for projects within reservation boundaries including dredge and/or fill), these permits may also be obtained through the Joint Application Form between IDL, IDWR and ACOE.
· Floodplain Development Permits: In areas like Shoshone and Kootenai counties, work in designated floodplains requires a local permit to ensure compatibility with flood management standards. FEMA No-Rise Certifications may be required for any project in a floodway and must be reviewed to determine if the project will increase flood heights. An engineering analysis must be conducted before a permit can be issued. The community’s permit file must have a record of the results of this analysis, which can be in the form of a No-Rise Certification. This No-Rise Certification must be supported by technical data and signed by a registered professional engineer. The supporting technical data should be based on the standard step-backwater computer model used to develop the 100-year floodway shown on the Flood Insurance Rate Map (FIRM) or Flood Boundary and Floodway Map (FBFM).
· Site Disturbance Permits: Counties such as Kootenai and Benewah may require these for grading, excavation or drainage work to protect against erosion and sedimentation. Shoshone County also requires Site Disturbance permits for waterfront and upland disturbance projects, which are typically considered high-risk and require a professional design plan. For areas within the Bunker Hill Superfund Site, an Institutional Controls Permit is also required. These permits are free of charge.
· Construction General Permit: Required for projects disturbing over 1 acre of land and discharging stormwater to U.S. waters. Managed by EPA and DEQ, it involves preparing a Stormwater Pollution Prevention Plan (SWPPP) and submitting a Notice of Intent. SWPPP’s must be displayed on the project site and visible for inspection throughout the life of the project.
· Water Rights Permits: Required for temporary or permanent diversion or impoundment of surface or groundwater. Managed by IDWR, these permits ensure legal use and sustainable water allocation. This permit is required for pulling water from area waterbodies for irrigation and drilling wells for domestic water use.
These permits are not just bureaucratic requirements; they play a crucial role in protecting water resources, especially in sensitive areas like wetlands. Applicants are encouraged to coordinate with the appropriate agencies early in project planning to ensure compliance and avoid costly delays, fines or other penalties.
THE DIRT: Waterfront properties
Idaho waters, including rivers, lakes, and streams, are designated as state property, which is meant to be enjoyed by all and is therefore protected under state and federal regulations, including the Clean Water Act. Owning, leasing, and enjoying waterfront property is a special privilege in North Idaho, but with this privilege also comes key responsibilities. Protecting your property is important, but protecting the water itself is equally important. Construction activities in and around water bodies require permits. These permits ensure construction projects or alterations are completed in a manner that will protect water quality, the environment, and aquatic species such as fish and their spawning habitats. If work is performed without the necessary permits, it can result in profound consequences, including costly fines and extremely expensive restoration work. Violations are taken very seriously, and in recent years, several local landowners have learned this hard lesson. Each individual landowner was fined thousands of dollars for failing to obtain permits and violating sections of the Clean Water Act. In addition to fines, each property owner also had to perform expensive restoration work that required hiring environmental engineers. When working around water bodies, it is in your best interest to follow all permitting procedures and requirements.
Protecting water quality is important everywhere, but has even more importance when working along water bodies within the Bunker Hill Superfund Site. Sediments found in and along most local waterways contain hazardous levels of heavy metals, including lead and arsenic. Introducing contaminated sediments into waterways when performing construction activities can be even more damaging to the environment and poses a threat to wildlife and humans. Contaminated sediments from historic mining practices have accumulated along area banks and shores for over one hundred years, altering the nature of our banks, shores, and waterways. These sediments are highly erodible and make riverbanks and lake edges much less stable. These issues often lead to owners performing erosion control and bank stabilization projects to protect their land. Before beginning any of these types of projects, make sure to contact the correct agencies. The health and beauty of our waterways depend on us all doing our part.
When it comes to protecting North Idaho’s water resources, awareness and responsibility go hand in hand, especially in areas like the Bunker Hill Superfund Site, where risks are elevated. Understanding the importance of permits is the first step. But what exactly are the permits you might need, and how do they apply when working near rivers, lakes, or wetlands?
To dive deeper into the specific permits required—particularly when wetlands are involved—read our next article, which will discuss working permits for construction sites near water inside the Coeur d’Alene Basin.
The Dirt is a series of informative articles focused on all aspects of cleanup efforts associated with the Bunker Hill Superfund Site. Our goal is to promote community awareness of contamination issues, to provide tools for protecting public health, and to keep the community informed of current and future cleanup projects. The Dirt is a group of committed and local experts from multiple agencies, including the Basin Environmental Improvement Project Commission, Panhandle Health District, Shoshone County, Silver Valley Economic Development Corporation, and the Idaho Department of Environmental Quality.
THE DIRT: 2025 Construction Season
Summer arrived early in the Silver Valley this year. The trees have already bloomed, and the snow has melted off the Alhambra Slide. Flowers have been planted, and preparation for summer vacation has begun. Summer also marks the beginning of the construction season, and much is planned within the Bunker Hill Superfund site. The Idaho Department of Environmental Quality (DEQ), through funding provided by the EPA, has several projects within the Box, the 21-square-mile area surrounding the historic smelter area, to remediate and upgrade existing barriers to protect public health.
If you or your children attended or currently attend Pinehurst Elementary School, you’re probably aware of its dreaded paved playground that ices over each winter, leading to numerous injuries and a few broken bones. Due to its age and current drainage conditions, the asphalt has begun to deteriorate, increasing the potential for underlying contamination to come to the surface. This project involves removing existing asphalt and concrete barriers and existing playground surface coverings. Clean surface and subsurface materials, asphalt, concrete, turf and flexi-pave will then be used as new barriers, covering up contaminated soil across the entire project area and creating a beautiful and safe new playground
For the past 30 years, a large sludge pond on top of the Central Impoundment Area (CIA) has been used to store sludge waste produced during the treatment of contaminated mine waters at the Central Treatment Plant (CTP) in Kellogg. The pond reached capacity in June of 2023 and has been replaced by three new, lined sludge impoundments that were constructed as part of the recent CTP upgrades. The old sludge pond area will be capped with a cover system and clean materials that will tie into the existing CIA cap and meet the same performance standards as the existing cover on the CIA.
The Airport Riverwalk is a system of walking trails in Smelterville, primarily north of the airport. Last year, DEQ made improvements to the trail systems by adding additional clean gravel to help maintain the remediated barriers throughout the site. This year, DEQ will install a concrete pad just west of the parking lot area for a shade structure that is being supplied by the Kootenai Realtor’s Association. This new shaded area will provide a clean spot for trail users to take a break or have a picnic.
Also in Smelterville, just east of the old drive-in theater, additional work will be taking place. Last fall, Phase I of the East Smelterville Flats project was completed with the installation of fencing and clean gravel access areas. Phase II will begin this summer, with the installation of a new clean 12-inch deep soil cap and overlying vegetative barrier. In addition, concrete pads will be placed throughout the site for the future installation of shade structures and picnic tables. Work is anticipated to be completed this fall.
The Uptown Kellogg Barrier Enhancement project is located on the south side of Kellogg, locally known as Uptown Kellogg. This project targets the blocks between McKinley Avenue and the intersection of Upper Third Street and South Division Street. The sidewalks in this area and two other sections of the city were previously evaluated for signs of deterioration and exposed sub-base materials. This project will replace the old sidewalks with new, durable concrete barriers to protect the public from exposure to heavy metals contained in the underlying contaminated soils. It will also protect against recontamination of adjacent clean barriers and will eliminate the spread of contaminated dust and tracking of contaminated material. This project also protects surface water quality by preventing contaminated sediments from washing into the city’s stormwater system and into the South Fork of the Coeur d’Alene River.
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The Dirt is a series of informative articles focused on all aspects of cleanup efforts associated with the Bunker Hill Superfund Site. Our goal is to promote community awareness of contamination issues, to provide tools for protecting public health, and to keep the community informed of current and future cleanup projects. The Dirt is a group of committed and local experts from multiple agencies, including the Basin Environmental Improvement Project Commission, Panhandle Health District, Shoshone County, Silver Valley Economic Development Corporation, and the Idaho Department of Environmental Quality.
