Region 8

Carpenter Snow Creek Mining District

Carpenter Snow Creek Superfund site location map

Site Type: Final NPL
City: Neihart
County: Cascade
ZIP Code: 59465
EPA ID: MT0001096353
SSID: 089X
Congressional District: At Large

What's New?

Updated May 2014

EPA, the Montana Department of Environmental Quality (DEQ), and the United States Forest Service (USFS) briefed the Cascade County Commissioners on the ongoing and planned site activities at the regular commission meeting on May 12, 2014. A copy of the presentation and a fact sheet summarizing planned 2014 field activities that was sent out to interested parties in April are posted in Site Documents below.


EPA, in consultation with DEQ and USFS, plans to issue a sitewide Remedial Investigation (RI) report in late 2014. The report will provide information concerning metals concentration in tailings, soil, sediment, surface water and groundwater throughout the mining district, for the purposes of characterizing and identifying the extent of material that may require a response action. This will be followed by a Feasibility Study (FS) of the Silver Dyke Mining Complex portion of the site (including the Silver Dyke Glory Hole, Silver Dyke Mill, Upper and Lower Carpenter Creek Tailings and all the associated mine contaminated waste along Carpenter Creek) to evaluate the most appropriate cleanup methods. This Silver Dyke Mining Complex FS should be completed in early 2016. This will be followed by a proposed plan and a Record of Decision (ROD) for cleanup. Agency staff will then focus on preparing a FS for the remaining portions of the site, including the abandoned mines within the Snow Creek and Neihart Slope drainages and the mine contaminated flood deposits along Belt Creek.

The USFS completed a removal action in 2013. The removal action included interim response actions at the Silver Dyke tailings and upper and lower Carpenter Creek tailings impoundments to stabilize these tailings until a permanent remedial action is taken. Activities at various locations within the Carpenter Creek and Silver Dyke tailings impoundments included: 1) Construction of lined surface run-on and run-off ditches on the upper and lower Carpenter Creek tailings to reduce storm flows and snowmelt from eroding tailings; 2) Installation of diversion channels to route clean water around all three tailings impoundments; 3) Installation of erosion check dams at all three tailings features in areas where deep rills have formed in past erosion events; 4) Installation and maintenance of a certified weed-free straw bale erosion berm at the base of the Silver Dyke Tailings, 5) Application of wood straw mulch over tailings piles as an erosion control measure, 6) Placing of riprap to stabilize access road to Silver Dyke tailings, and 7) Administrative controls, including fencing and signage on the tailings piles in Carpenter Creek, to eliminate trespass with recreational vehicles and to educate the public on the potential dangers. The pollution report is posted in Site Documents below

An appropriate repository for the waste from the entire Carpenter Snow Creek Mining District Superfund Site is still being determined, so the planned remedial action schedule for Neihart is delayed. There are two repository locations in the Carpenter Creek watershed currently being evaluated. A Remedial Investigation/Feasibility Study for selection of a repository site is currently being reviewed by the agencies as part of the process to select repository sites. A proposed plan will be prepared to present the proposed alternative to the public in early summer 2014 and a Record of Decision will be prepared later to select the repository sites. Once a potential repository has been selected to accept all the waste and an agreement is negotiated with the property owner(s), remedial action for Operable Unit 1 (OU1, Neihart) can commence pending availability of funding.

EPA plans to initiate an additional removal action in late 2014, once the repository has been selected in the Record of Decision. The removal action includes excavation and placement of 33,000 cubic yards of mine waste located in the Silver Dyke Tailings impoundment in a permanent repository.

One of the locations being considered as a repository is the Silver Dyke glory hole. However, very poor quality water discharges from the Silver Dyke mine adit, contributing an estimated 30,000 pounds of zinc per year into Carpenter Creek. To assess the suitability of the glory hole, the effects of filling and capping have to be better understood. Phosphorous dye tracers were placed uphill of the Silver Dyke glory hole in 2013 and again in April 2014, to help identify the source areas for the water draining from the adit. The objectives of this study are to develop a better understanding of relative contributions from snowmelt and groundwater, and to assess whether use of the glory hole as a repository will improve or degrade the water quality or quantity discharging from the adit. The Silver Dyke Adit will also be assessed to determine the viability of different technologies to treat the mine-influenced waters. The study will help identify, or rule out, possible treatment options for the Silver Dyke Adit discharge that will be evaluated during the Feasibility Study.

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Site Description

map of the Fort Benton/Denton/Stanford area
Map of the Fort Benton/Denton/Stanford area

James Neihart, a local prospector, was the namesake for the small mining town of Neihart. Mining began in the area in the 1880s when silver deposits were discovered near the future Neihart town site. Mines yielded primarily silver, lead and zinc ores. During the 1920s, lead and zinc were produced in large quantities. The mining district has been largely inactive since the 1940s, although some mines have reported mine development work and some sporadic production.

The Carpenter Snow Creek Mining District Superfund Site (CSCMD) lies in the Little Belt Mountains of southern Cascade County. The site encompasses approximately 9,000 acres with mine tailings, waste rock and mine-influenced waters present throughout the site, due to the many inactive and abandoned mines. The State of Montana’s Abandoned Mine Bureau identified, inventoried and sampled these inactive mines in the Carpenter Snow Creek area in the early 1990s. Sampling showed the presence of a variety of metals in the area surface water and soils that are found in concentrations known to produce risk to human health and the environment. The CSCMD site was listed on the Superfund National Priorities List in 2001.

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Site Risk

Approximately 96 abandoned mines have been identified in the Carpenter Snow Creek Mining District Superfund Site, and at least 21 of these have been identified as probable sources of contamination to surface water. There are also more than 12 adits that discharge mine-influenced water, usually of poor quality with low pH and high concentrations of dissolved metals. In general, the flow from these adits increases during and after snow melt and then slowly decreases into fall and winter. The concentration of metals can also vary greatly, depending on whether the water is derived from surface water or groundwater. In addition to the adit discharges, there are also documented impacts from mining waste to soil, surface water and stream sediments in Carpenter Creek, Snow Creek and Belt Creek in reports and technical memorandums generated since 2009. Several of these are posted in Site Documents below

Media Affected Contaminants Source of Contamination
groundwater, sediment, surface water, soils heavy metals and arsenic mining wastes

Since 2001, EPA has and is continuing to collect soil/mine waste, surface water, sediment, and groundwater samples throughout the entire site, with expanded efforts in and around the town of Neihart and the Silver Dyke Mining Complex continuing in 2014.

Concentrations of lead and arsenic in soil that exceed the action levels specified in the 2009 Record of Decision have been identified in residential yards and alleys throughout the town of Neihart. Preliminary sampling did not identify contaminant levels above drinking water standards, or levels that EPA considers unhealthy for aquatic life, in the surface water of Belt Creek as it flows through Neihart. Similarly, contaminant levels in the sediment of Belt Creek as it flows through Neihart did not exceed levels considered safe for recreational use.

Sampling in the Carpenter Creek, Snow Creek and Niehart slope drainages north of Neihart since 2009 reveal elevated levels of lead and zinc in the surface water as well as sediments and fluvial soils along Carpenter Creek and Belt Creek adjacent and below the various waste rock and tailings piles present in these watersheds. Sampling in 2012 and 2013 indicates that contaminated soils that were deposited in the floodplain during historic Belt Creek flood events, such as the 1953 and 1981 floods, extend all the way to Monarch. In addition, several adits that are discharging from abandoned mines continue to contribute to the degradation of the water quality throughout the mining district.

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Cleanup Progress

The site has been delineated into three operable units (OUs), which is a term used by EPA for each of a number of separate activities undertaken as part of a Superfund site cleanup. EPA has established these preliminary study area boundaries for the purpose of planning and developing the initial scope of the Remedial Investigation/Feasibility Study (RI/FS) for OU2 and OU3.

OU1 is specific to the Neihart Community Soils Area, which includes the town of Neihart and nearby residences impacted by former mining operations or the relocation of mine waste from former mining operations. Further, OU1 includes mine waste (above action levels) on undeveloped properties adjacent to residential property(s), waste above action levels accessible to the general public and the Belt Creek Tailings area that also includes the contamination addressed as part of an EPA time-critical removal action in 2004. Over 120,000 cubic yards of waste is in the Neihart Community Soils Area and the Belt Creek tailings. Any investigation for consideration of remedial action for OU1 is specific to elements that may impact residential settings. As the site is characterized further, these OU boundaries are subject to change.

OU2 encompasses the abandoned mine sites, mill sites, and associated wastes along Snow Creek, Lucy Creek, Mackay Creek, Haystack Creek and Burg Creek in the Upper Carpenter Creek basin. These areas contain more than 112,000 cubic yards of mine-related waste.

OU3 contains waste located in Carpenter Creek and any wastes in the Belt Creek floodplain below Carpenter Creek extending to Monarch. The Silver Dyke Mining Complex is located in the Upper Carpenter Creek basin and includes the Silver Dyke glory hole, associated underground workings, mill facilities, tailings piles, and eroded tailings in the floodplain areas of Carpenter Creek. The ore in this complex was mined between 1923 and 1929 and is characterized by a wide body of low grade ore containing zinc and lead and a high proportion of copper, but which also resulted in a large quantity of tailings and refuse along Carpenter Creek. In 1925, a tailings dam next to the Silver Dyke Mill was damaged by an earthquake and resulted in a flood of tailings into the valley below. In 1926, two impoundments were built in Carpenter Creek (upper and lower) for collection of mine tailings. These tailings, now known as the Carpenter Creek Tailings, were placed into the impoundments by slurry from the upstream Silver Dyke Mill and are thought to have originally spanned the entire valley.

Neihart Community Soils Ongoing and Planned Activities

In 2013, property owners expressed desire to perform modifications to their properties and began participation in Property Owner’s Soil Management Program (POSM) program. The modifications involve movement of soils containing lead above EPA’s action level, some of which were determined to be outside of the owner’s property boundaries. EPA determined that accurate, current and detailed boundary information was needed to support RD and subcontracted Global Positioning System (GPS) surveying of OU1 and the surrounding area to better quantify property boundary information and provide greater topographical information.

Information obtained from surveying activities performed in late 2013 is being incorporated into the RD and the POSM program. High level aerial view and topographical maps have been generated. The ongoing focus is to revise individual property designs through 2014.

Enhanced Surveying – Additional topographical survey information is expected to be collected in 2014. The new survey data will be incorporated into existing topographical information from Neihart and the Neihart Slope. Watershed information will be developed and utilized to determine overland water flows from the slope and through the Town of Neihart. This will aid in minimizing future deposition of mine waste from the slope and better define the adequacy of water channels through the Town of Neihart.

Storm Water and Maintenance Access Roads Design – Survey information will also be utilized to design storm water and maintenance access roads on the east side of Neihart. The maintenance roads are being designed to allow light vehicle traffic to each of the drainages anticipated for any potential collection or treatment systems that may be installed at existing mines or mine waste in these drainages. These roads are also expected to provide drainage from water runoff from the slope.

Haul Road Design – As revised locations for potential mine waste repositories are finalized, EPA has identified a need for haul roads design to these locations. In addition, current access roads may require modifications to safely support haul traffic. Survey information and anticipated traffic patterns will be utilized to aid in development of safe haul road designs for heavy vehicle traffic.

Additional Soil Sampling – EPA is seeking written permission from property owners in close proximity to Neihart to sample properties have not been sampled previously. EPA is taking the opportunity to characterize properties in Johnston and O’Brien Creeks and areas south of Neihart. Access will be sought from property owners prior to the start of any soil sampling campaign. Only properties where permission is obtained will sampling be performed. In conjunction with sampling, property data will be obtained to aid in the development of RD for each property.

POSM Activities – A few property owners have expressed their desires to perform modifications and enhancements to their properties. To participate in the POSM program owners must have a HAZWOPER Certified contractor if they are not conducting the work and any required property agreements must be in place prior to beginning work. The EPA POSM program assists property owners in identifying soils found to contain metals concentrations above EPA action levels. By identifying these soils and working with property owners, the movement of soils containing lead and arsenic above EPA actions levels will be minimized. This program is in effect while remedial action plans are being finalized. All property owners wishing to move soils onto or off of their property are strongly encouraged to participate in the POSM program.

POSM Revision – Information obtained through recent surveying efforts, soil movement occurring this construction season, and from this season’s sampling and design activities will be reflected in revised copies of POSM program documentation. The POSM contact center located at the Cascade City-County Health Department will maintain the most current information available. POSM program construction activities are monitored during the construction season and the contact center is updated weekly at a minimum to those activities. The overall POSM program Administrative and Implementation Plans will be revised prior to and after this construction season.

Remedial Design Efforts – All information obtained through efforts associated with the 2014 field season will be reflected in revisions to the RD. As repository site locations are finalized, the RD will be completed by EPA, in consultation with DEQ. The RD consists of contractor bid package material to allow EPA to move forward with RA as quickly as possible upon completion of the RD. Emphasis will be placed on performing remedial action associated with OU1 prior to the other Operable Units.

OU2 and OU3 Ongoing and Planned Activities

Multiple important sampling efforts took place within the watershed in 2013. These included:

  • Turbidity Monitoring at four locations in Carpenter Creek from April through October.
  • Bi-monthly adit discharge sampling at seven adits.
  • Continuous adit flow monitoring at 4 adits ongoing since May of 2013.
  • A tracer dye test of the regional hydrogeology of the Silver Dyke Mine.
  • Isotopic analysis of adit and spring water in the vicinity of the Silver Dyke Mine.
  • Bench scale testing of two passive treatment technologies; sulfate reducing bioreactors and lime addition.
  • Streamside mine waste evaluation of Upper Belt Creek through the town of Neihart north to the confluence of Carpenter Creek.
  • Geotechnical sampling of the soils and mine wastes at the former Silver Dyke tailings dam area.
  • Completion of a conceptual design for the removal of tailings from the former Silver Dyke tailings dam area and placement in a repository.
  • Remedial Investigation Preparation.
  • Repository Investigation of a potential Neihart Slope repository.
  • Installation of two monitoring wells in the Snow Creek watershed.
  • Installation of five vegetation test plots on mine waste to determine slope stabilization feasibility.
  • Semi-annual watershed wide sampling of groundwater, surface water and sediment contained in the 2013 Sampling Activities Report posted in Site Documents below.

An Action Memorandum was issued in June 2013 for the Carpenter Creek and Silver Dyke tailings impoundments within OU3. The Action Memorandum is posted in Site Documents below.

The administrative record for this Action Memorandum contains documentation of ongoing releases of hazardous substances from the Carpenter Creek and Silver Dyke tailings impoundments into Carpenter Creek and downstream into Belt Creek.

The USFS completed the first phase of the removal action in 2013. The removal action included interim response actions at the Silver Dyke tailings and upper and lower Carpenter Creek tailings impoundments to stabilize these tailings until a permanent remedial action is taken. Activities completed at various locations within the Carpenter Creek and Silver Dyke tailings impoundments included: 1) Construction of lined surface run-on and run-off ditches on the upper and lower Carpenter Creek tailings to reduce storm flows and snowmelt from eroding tailings; 2) Installation of diversion channels to route clean water around all three tailings impoundments; 3) Installation of erosion check dams at all three tailings features in areas where deep rills have formed in past erosion events; 4) Installation and maintenance of a certified weed- free straw bale erosion berm at the base of the Silver Dyke Tailings, 5) Application of wood straw mulch over tailings piles as an erosion control measure, 6) Place riprap to stabilize access road to Silver Dyke tailings, and 7) Administrative controls including fencing and signage on the tailings piles in Carpenter Creek to eliminate trespass with recreational vehicles and to educate the public on the potential dangers. The Final Pollution Report is posted in Site Documents below.

An appropriate repository for the waste from the entire CSCMD is still being determined, so the planned remedial action schedule for Neihart is delayed. The Evening Star Mine and Mill Site, located just outside Neihart on Highway 87, was evaluated as a potential repository in 2012. The site was determined not to be feasible because of the cost to develop the property as a repository and insufficient size to handle the estimated 112,000 cys of mine related waste. There are two additional repository locations in the Carpenter Creek watershed currently being evaluated. A Remedial Investigation/Feasibility Study for selection of a repository site is currently being reviewed by the Agencies as part of the process to select repository sites. A proposed plan will be prepared to present the proposed alternative to the public in early summer 2014 and a Record of Decision will be prepared later to select the repository sites. Once a potential repository within the mining district has been identified to accept all the waste and an agreement is negotiated with the property owner(s), Remedial Action for OU01 Neihart can commence once funding becomes available.

EPA and DEQ will continue to collect data in 2014 to identify and design remedial response actions. In general, these activities involve small project teams (usually two people) and little if any heavy equipment (e.g., a drill rig or backhoe). Written access will be obtained in advance from all property owners where field activities are planned. Activities include:

Carpenter Creek Monitoring – The water quality of Carpenter Creek will be monitored at multiple locations to determine the water quality and sediment loading. The turbidity and field parameters of the water will be measured regularly through spring runoff and into the fall. The data will be used to identify the main sediment source areas and prioritize remedial response actions.

Adit Discharge Monitoring – There are more than 12 adits within the site that discharge water. In general, the adit flow rate increases during and after snow melt and then slowly decreases into fall and winter. The concentration of metals can vary greatly depending on whether the water is derived from surface water or groundwater. Water quality and flow rate data will be collected from four adits throughout spring runoff and water quality will be measured at four more adits. The data will be used to assess the seasonal changes in water quality and the sources for the water.

Repository Location Study – It is now known that there is greater than 1,000,000 cubic yards of mine waste present at the site. One potential remedial alternative is to excavate the waste and place it in an engineered repository. A Remedial Investigation/Feasibility Study for selection of a repository site is being prepared as part of the process to select repository sites. A proposed plan will be prepared to present the proposed alternative to the public very soon and a Record of Decision will be prepared later this summer to select the repository sites.

Silver Dyke Mine Tracer Study – The glory hole at the Silver Dyke mine is under consideration as a repository location. There is also very poor quality water discharging from the Silver Dyke mine adit. To assess the suitability of the glory hole as a repository the effects of filling and capping have to be better understood. Dye tracers were placed uphill of the Silver Dyke glory hole to identify the source areas for the water draining from the adit. The objectives are to develop a better understanding of relative contributions from snowmelt and groundwater and to assess whether use of the site as a repository will improve or degrade the water quality or quantity discharging from the adit.

Silver Dyke Mining Complex Feasibility Study – EPA, in consultation with DEQ and USFS, plans to issue a sitewide RI report in late 2014 that will provide information concerning metals concentration in tailings, soil, sediment, surface water and groundwater throughout the mining district for the purposes of characterizing and identifying the extent of material that may require a response action. This will be followed by a Feasibility Study (FS) of the Silver Dyke Mining Complex portion of the Site (including the Silver Dyke Glory Hole, Silver Dyke Mill, Upper and lower Carpenter Creek Tailings and all the associated mine contaminated waste along Carpenter Creek) to evaluate the most appropriate cleanup methods. This Silver Dyke Mining Complex FS should be completed in early 2016. This will be followed by a proposed plan and a Record of Decision (ROD) for cleanup. Agency staff will then focus on preparing a FS for the remaining portions of the Site including the abandoned mines within the Snow Creek and Neihart Slope drainages and the mine contaminated flood deposits along Belt Creek.

Mine Discharge Treatment Bench Scale Study – A number of the mines discharge water that contains metals at concentrations above acceptable levels. Some of this water will require treatment in the future. To assess the viability of different treatment technologies, water will be collected from Silver Dyke mine for use in the treatment testing. The study will help identify, or rule out, possible treatability options for the discharges.

Revegetation Pilot Test – Much of the mine waste does not have vegetation. The lack of vegetation may be due to metals toxicity or to physical features like grain size, unstable surfaces, or lack of nutrients. In 2013, the physical features of five sites were systematically modified in test plots. In 2014 the test plots will be monitored to determine if vegetation can be established on the waste rock in order to evaluate the effectiveness of treating mine waste in place rather than excavating and disposing of it in a repository. Two test plots will also be installed on mine-contaminated slopes to evaluate methods for reducing erosion.

Montana Fish, Wildlife & Parks – Montana Fish, Wildlife & Parks will evaluate fish numbers and distribution in Belt Creek and determine fish mortality. Additional activities will include: marking westslope cutthroat trout with passive integrated transponder tags, sampling for benthic macro-invertebrates, and taking discharge measurements and checking thermographs. Funding was also secured to select a suitable location and complete the design for a fish barrier in Carpenter Creek, to ensure the genetically pure Westslope cutthroat trout are protected once remediation of Carpenter Creek commences.

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Community Involvement

Community involvement plays an important role in the Superfund process. EPA uses a number of different tools and resources to promote effective, on-going, meaningful community involvement. The goals of the Superfund community involvement program are to:

  • Keep communities affected by sites informed throughout the cleanup process.
  • Provide opportunities for communities to comment and offer their input about site cleanup plans.
  • Facilitate the resolution of community issues tied to a site.

A Community Involvement Plan was prepared in 2011 for the Neihart Community Soils area (OU1) and is being updated in 2012 to include the entire site. The plan provides a history of the site, a brief background and description of the community of Neihart, and identifies issues of concern to the local community regarding the site. EPA interviewed home and business owners and local government officials in the preparation of the Community Involvement Plan. The interviews provided community members and officials the opportunity to voice concerns and issues related to the Superfund site. In the Community Involvement Plan, EPA specifies objectives and future plans for community involvement and communication at the Carpenter Snow Creek site. EPA plans fact sheets, news releases and focused meetings for community members as part of the agency’s efforts to keep the community informed of site progress. In addition, EPA will maintain an accurate mailing list for those interested in receiving information about the site. If you would like to be on the mailing list, please contact the EPA Remedial Project Manager listed below. The 2012 Community Involvement Plan will be available in the Site Documents section once it has been finalized.

EPA, the Montana Department of Environmental Quality (DEQ), and the United States Forest Service (USFS) briefed the Cascade County Commissioners on the ongoing and planned site activities at the regular commission meeting on May 12, 2014. A copy of the presentation and a fact sheet summarizing planned 2014 field activities that was sent out to interested parties in April are posted in Site Documents below.

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Reuse

EPA places a high priority on land reuse as part of its Superfund response program mission. The agency tries to select cleanup options that encourage and support future use of a site. EPA uses two fundamental methods to facilitate reuse of Superfund sites:

  • Exploring future uses before the cleanup remedy is implemented, an approach that gives the Agency the best chance of designing cleanup remedies to support the likely future use of a site.
  • Working with landowners and communities to remove barriers not considered necessary for the protection of human health or the environment at those sites where remedies are already in place.

One option for reuse is the siting of clean and renewable energy projects on contaminated (or formerly contaminated) lands. As part of this effort, EPA is evaluating the potential for energy projects on these properties and working with landowners and communities to identify ways to remove barriers to such projects.

The reasonably anticipated future land use is determined during the RI/FS process. This information is considered during the development and selection of the remedy for the site. Many properties in Neihart are already in continued use as residential or commercial properties.

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Land Use Controls and Other Institutional Controls

Land use controls are the most common type of institutional control (IC). ICs are administrative or legal controls that help reduce the likelihood for human exposure to contamination. ICs can also help protect the integrity of the remedy. Examples of ICs are:

  • Zoning ordinances.
  • Environmental covenants.
  • Deed notices.
  • Well-drilling restrictions.
  • Building permits.
  • Informational advisories.

Options for institutional controls are developed as needed during the RI/FS process and selected in the Record of Decision as a part of the remedy. EPA will determine the specific ICs later in the cleanup process, following the remedial action.

Options for institutional controls are developed as needed during the RI/FS process and selected in the Record of Decision as a part of the remedy. EPA will determine the specific ICs later in the cleanup process, following the remedial action.

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Five-Year Reviews

EPA or the lead agency conducts five-year reviews following the start of a Superfund cleanup when contamination is left on the site. These reviews are repeated every five years. We use these reviews to determine:

  • How the remedy is working.
  • If the remedy remains protective of human health and the environment.

Remedial action has not begun, therefore five-year reviews are not yet required at this site.

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Site Documents

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Presentation from County Commissioners' Briefing, May 12, 2014

Pollution Report 1 for Operable Unit 3 (Carpenter Creek and Silver Dyke Tailings Impoundments), March 20, 2014

2013 Sampling Activities Report, January 2014

Action Memorandum: Request for Approval of a Time-Critical Removal Action for Operable Unit 3 (Carpenter Creek and Silver Dyke Tailings Impoundments), June 11, 2013

2012 Field Update presentation from the November 5, 2012 public meeting

Presentation from the May 3, 2012 public meeting

Map of OU3 Tailings and Soils by Category, March 2012

Record of Decision (ROD) text, appendices and figures, March 2009 (PDFs located on the FTP site; see individual files there)

Fact Sheets

Site Update Fact Sheet, April 2014

Site Update Fact Sheet, June 2013

Neihart Community Soils (OU1) Fact Sheet: Introducing EPA’s Pre-Remedial Assistance for Property Owner’s Soil Management, December 2012

Site Update Fact Sheet, October 2012

Site Update Fact Sheet, April 2012

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Contacts

EPA

Tillman McAdams
Remedial Project Manager (for OU1)
U.S. Environmental Protection Agency, Region 8
Montana Office
Federal Building
10 West 15th Street, Suite 3200
Helena, MT 59626
406-457-5015
866-457-2690 (toll free)
mcadams.tillman@epa.gov

Roger Hoogerheide (for OU2 and OU3)
Remedial Project Manager
U.S. Environmental Protection Agency, Region 8
Montana Office
Federal Building
10 West 15th Street, Suite 3200
Helena, MT 59626
406-457-5031
866-457-2690 (toll free)
hoogerheide.roger@epa.gov

Montana DEQ

Keith Large
State Project Officer
Montana Department of Environmental Quality
Remediation Division
1100 N. Last Chance Gulch
PO Box 200901
Helena, MT 59620-0901
406-841-5039
klarge@mt.gov

USFS

Beth Ihle
On-Scene Coordinator
Townsend Ranger District
415 South Front Street
Townsend, MT 59644
406-266-3425
bihle@fs.fed.us

Site Information Repositories:

EPA Superfund Records Center
Montana Office
10 West 15th Street, Suite 3200
Helena, MT 59626
406-457-5046
866-457-2690 (toll free)
Hours: M-F, 8:00 a.m.-4:30 p.m.

Cascade County Health Department
115 4th Street South
Great Falls, MT 59401
406-454-6950

Belt Creek Ranger Station
c/o Neihart, Montana 59465
406-236-5309

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Photo/Video Gallery

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Collecting a water sample at Haystack mine
Runoff of lower Carpenter Creek tailings during a thunderstorm
Carpenter Creek entering Belt Creek after a storm
Montana Fish, Wildlife and Parks collecting fish in Belt Creek below Carpenter Creek
Big Seven mine during a winter reconnaissance
Silver Dyke Mine Glory Hole during a March reconnaissance
Adit discharge from the Compromise mine
Looking out at the Lexington #4 from the collapsed adit
Looking down at Upper Rebellion from the Ripple mine
Silver Dyke Mill

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Links

Montana Department of Environmental Quality, Remediation Division Exit

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