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Milltown superfund site Missoula County, Mt

Milltown superfund site Missoula County, Mt. Geol 361 - Michael Armstrong & Heather Pung. History of Milltown Dam. Built between 1905 and 1908 Supplied power Major flood of 1908. www.meic.org /.../ image_view_fullscreen. www.meic.org/.../stimson-hist-pic.jpg/view. Superfund Site.

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Milltown superfund site Missoula County, Mt

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  1. Milltown superfund siteMissoula County, Mt Geol 361 - Michael Armstrong & Heather Pung

  2. History of Milltown Dam • Built between 1905 and 1908 • Supplied power • Major flood of 1908 www.meic.org/.../image_view_fullscreen www.meic.org/.../stimson-hist-pic.jpg/view

  3. Superfund Site -Definition of a Superfund Site -Environmental Protection Agency (EPA) roles in a Superfund site www.nytimes.com/2008/05/27/science/27dam.html

  4. Pollution Problems • Leeching of arsenic • Polluted drinking water • Copper in sediments www.flickr.com/.../lucidaphotographic/251151519 http://mt.water.usgs.gov/projects/clarkfork/images/Milltown%20Dam.jpg

  5. Objective for Milltown Restoration • restore the river channels at the confluence to be naturally functioning and self-maintaining • maintain water quality • provide high quality habitat for fish and wildlife • improve aesthetic values in the area by creating a diverse, natural setting • provide functional wetland and riparian communities • provide safe recreational opportunities such as river boating, fishing and trail access for hiking and bicycling (EPA website)

  6. The Process • Remove sediments • Remove the dam and powerhouse • Restore the Milltown drinking water supply • Allow unrestricted fish passage • Return the Clark Fork and Blackfoot Rivers to a more natural flow. http://farm3.static.flickr.com/2586/3691968042_d6815c9125.jpg

  7. http://www.cfwep.org/education/5-8/blackfootfishid/milltown_aerial.jpghttp://www.cfwep.org/education/5-8/blackfootfishid/milltown_aerial.jpg

  8. How is this being done? http://www.nytimes.com/imagepages/2008/05/27/science/27dam.graphic.ready.html

  9. Dam Removal Process 1 2 3 4 http://www.epa.gov/region8/superfund/mt/milltown/cfrdiversionphotos.html

  10. Dam Removal Process Continued 6 5 http://www.epa.gov/region8/superfund/mt/milltown/cfrdiversionphotos.html

  11. 3Rs: Remediation, Restoration, and Redevelopment Remediation: Dam and sediment removal Restoration: Returning natural functions of the rivers Redevelopment: New development to benefit the surrounding communities http://epa.gov/region8/superfund/mt/milltown/MilltownPark.pdf

  12. Lessons Learned • Mining contamination • Effects of groundwater contamination • Dam affects on rivers • Process of superfund projects • PREVENTION • Sediment contamination • Polluted aquifers, rivers and streams

  13. Sources • Hammer, Diana. "Breaching the Milltown Dam." US EPA. 31 Mar 2008. EPA, Web. 8 Nov 2009. <http://www.epa.gov/region8/superfund/mt/milltown/>.Matthews, Mark. "Environmentalists Want a Small Montana Dam Removed." CNR. 245.1 (2000): Print. • Robbins, Jim. "Montana Dam is Breached, Slowly, to Restore a Superfund Site." New York Times 27 May 2008: F.3. Print. • Tuthill, A.M. "Effects of proposed dam removal on ice jamming and bridge scour on the Clark Fork River, Montana." Cold Regions Science and Technology. 55. (2009): 186-194. Print.

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