1 / 14

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.

corina
Télécharger la présentation

Milltown superfund site Missoula County, Mt

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  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.

More Related