Category: Gold King Mine

Sampling Results:
Gold King Mine 2015 Release

Week of 07/25/16: XLS Report Week of 07/09/16: XLS Report Week of 07/04/16: XLS Report Week of 06/25/16: XLS Report Week of 06/18/16: XLS Report Week of 06/13/16: XLS Report Week of 06/05/16: XLS Report Week of 05/31/16: XLS Report Week of 05/21/16: XLS Report Week of 05/15/16: XLS Report Week of 05/09/16: XLS Report …

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Data and Analysis:
Gold King Mine 2015 Release

Evaluation of UDEQ Water Quality Data Collected during Spring Runoff following the Gold King Mine Release (June 21, 2016) DWQ summary of water quality in the San Juan River during the months of February, March, April, and the first week of June, 2016. Evaluation of UDEQ Water Quality Data Collected during Spring Runoff following the …

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Long Term Monitoring:
Gold King Mine 2015 Release

Long Term Monitoring Long Term Monitoring and Assessment Plan for the San Juan River and Lake Powell Appendix A: UDEQ Historical Water Quality Data Appendix B: US Geological Survey Historical San Juan River Data Summary Appendix C-a: Evaluation of UDEQ Water Quality Data Collected in Response to the Gold King Mine Release Appendix C-b: Evaluation …

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Gold King Mine

A large snowstorm knocked out power to a pump that was diverting water from the Gold King Mine into nearby treatment ponds. Contaminated water from the mine began to flow into Cement Creek on to the Animas River and is headed toward the San Juan River. The release is expected to reach the San Juan River on Monday.

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Gold King Mine 2015 Release

On August 5, 2015, the Environmental Protection Agency (EPA) began clearing material from the opening of the Gold King Mine in Silverton, Colorado, to install a pipe to pump water out of the mine. At 10:30 a.m., the material blocking the tunnel entry suddenly gave way, and a large buildup of water that had collected behind the debris was released into Cement Creek, a tributary of the Animas River.

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DWQ's Ben Brown sampling the San Juan River.

A Look Back: On the Scene after the Gold King Mine Spill

By Christine Osborne This week, we take a look back at DEQ’s response to the Gold King Mine release two years ago.¬†On August 5, 2015, EPA contractors were clearing debris from the opening of the Gold King Mine near Silverton, Colorado, when the blockage gave way, releasing three million gallons of acid mine drainage into …

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Water Quality: Gold King Mine Spill Underscores Need to Fix Leaky Mines

By Donna Kemp Spangler People all across the nation were stunned and outraged when on Aug. 5, a breach at the Gold King Mine turned the Animas River near Durango, Colo., a bright mustard-orange color. Even more shocking was the fact that federal Environmental Protection Agency (EPA) contractors caused the disaster. It took a 3-million-gallon …

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