Environment: Bulkhead a big step in Peru Creek cleanup

October 20, 2014

Originally posted on Summit County Citizens Voice:

All-out remediation effort targets acid mine drainage near Keystone Ski Area

Remediation work in progress at the Pennsylvania Mine site in Summit County, Colorado. Photo via Snake River Watershed Task Force.

Remediation work in progress at the Pennsylvania Mine site in Summit County, Colorado. Photo via Snake River Watershed Task Force.

By Bob Berwyn

FRISCO — For decades, the abandoned Pennsylvania Mine high has been oozing heavy metals — zinc, manganese, cadmium, lead and and arsenic — into the waters of Peru Creek, a small tributary of the Snake River near Keystone, Colorado. The site has been the focus of intensive study during the past 15 years with the goal of improving water quality downstream.

Last week, engineers and environmental experts took a big step toward trying to staunch that flow by blocking one of the mine tunnels. If all goes well, the new bulkhead could reduce the direct discharge from the mine by about two-thirds, said Jeff Graves, a remediation expert with the Colorado Division of Reclamation Mining…

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Summit County: The Pennsylvania Mine gets plugged

October 20, 2014
Acid mine drainage Pennsylvania Mine via the Summit County Citizens Voice

Acid mine drainage Pennsylvania Mine via the Summit County Citizens Voice

From the Summit Daily News (Ben Trollinger):

On Friday, Oct. 17, Stiegelmeier was one of several federal, state and local officials marking a milestone for the centerpiece of the county’s current mining cleanup efforts — plugging the Pennsylvania Mine.

About 8 miles east of Keystone, the abandoned mine is Summit County’s biggest mess. The mine, considered the worst in the state, spews toxic heavy metal concentrates and acidifies water flowing into the Peru Creek, a tributary of the Snake River, which feeds Dillon Reservoir. Peru Creek is without fish, insects or other aquatic life. The Snake River has life, but it’s sparse and found only in the lower reaches. In 2007, a burp of acidic water from the abandoned mine killed fish all the way to Keystone, county officials said.

This past week, the Colorado Division of Reclamation, Mining and Safety finished installing one of two bulkheads, massive plugs of concrete and steel built about 500 feet inside the mine.

According to project manager Jeff Graves, once both bulkheads are installed, toxic burps and blowouts will be a thing of the past.

“That won’t happen again — it can’t,” he said.

The bulkheads prevent water from flowing through the mine. Water will back up inside, reducing the amount of oxygen the metals and sulfides are exposed to, which should improve water quality.

POSITIVE IMPACTS

Though the more than $3 million project still has far to go, reclamation efforts seem to have had positive impacts already. Last year, the Peru Creek turned reddish-orange seven or eight times. That hasn’t happened once this year.

In addition to the bulkheads, new drainage ditches channel water away from waste-rock piles. Those piles have been capped. Eventually, they’ll be revegetated. Limestone has also been strategically added to raise the pH of the water, which could help filter out metals into settlement ponds.

Organizations involved in the project include: the Colorado Division of Reclamation, Mining and Safety, the U.S. Environmental Protection Agency, the Colorado Department of Public Health and Safety, the U.S. Geological Survey, the U.S. Forest Service, Summit County Open Space and Trails, Northwest Council of Governments, the Snake River Watershed Task Force, the Blue River Watershed Group and the Keystone Center.

More Peru Creek Basin coverage here and here.


USGS: Analysis of Water Quality in the Blue River Watershed, Colorado, 1984 through 2007

August 26, 2014
Blue River

Blue River

Here’s the release from the United States Geological Service (Nancy J. Bauch, Lisa D. Miller, and Sharon Yacob):

Water quality of streams, reservoirs, and groundwater in the Blue River watershed in the central Rocky Mountains of Colorado has been affected by local geologic conditions, historical hard-rock metal mining, and recent urban development. With these considerations, the U.S. Geological Survey, in cooperation with the Summit Water Quality Committee, conducted a study to compile historical water-quality data and assess water-quality conditions in the watershed. To assess water-quality conditions, stream data were primarily analyzed from October 1995 through December 2006, groundwater data from May 1996 through September 2004, and reservoir data from May 1984 through November 2007. Stream data for the Snake River, upper Blue River, and Tenmile Creek subwatersheds upstream from Dillon Reservoir and the lower Blue River watershed downstream from Dillon Reservoir were analyzed separately. (The complete abstract is provided in the report)

Click here to read the report.

More USGS coverage here.


Summit County buys mining claims near Montezuma to protect land — Summit Daily News

August 25, 2014

Snake River

Snake River


From the Summit Daily News (Alli Langley/Joe Moylan) via the Glenwood Springs Post Independent:

During the silver mining boom of the 1870s, with a population of just 71, Sts. John was for a short time Summit County’s largest town.

The Summit County Open Space and Trails Department recently bought the abandoned townsite and nearby mining claims for $425,000 from the Tolen family, which owned land in the area since the 1950s.

The purchase, finalized July 28, conserves about 90 acres in the Snake River Basin above the town of Montezuma as public open space. The 18 separate parcels have significant wildlife value, according to the Colorado Natural Heritage Program, the U.S. Forest Service and the Snake River Master Plan.

“We are incredibly grateful to the Tolen family for working closely with the Summit County Open Space program to preserve the heritage of Sts. John and this exquisite landscape for the enjoyment of Summit County citizens and visitors alike,” said Brian Lorch, the program’s director. “This is one of the most important and significant acquisitions the program has made in recent years.”

The county acquired the properties using the Summit County Open Space fund, approved by voters in 2008. Breckenridge Ski Resort contributed $25,000 toward the purchase as part of a deal with environmental groups worried about the impacts of the recent Peak 6 development.

With the acquisition, the county will protect a large portion of the Snake River Basin backcountry and preserve a piece of Summit County history. Lorch said the Sts. John properties are highly valued for their intact historic resources, popularity for outdoor recreation and high-quality wetlands and wildlife habitat…

The Summit County Open Space program acquires lands to protect the scenic beauty, natural habitat, backcountry character and recreational opportunities in Summit County. Funded through property tax mill levies approved by Wvoters in 1993, 1999, 2003 and 2008, the program has protected more than 14,000 acres of open space.

More Blue River watershed coverage here.


Three-year cleanup targets Summit County’s Pennsylvania Mine — Summit Daily News

August 4, 2014
Pennsylvania Mine Upper Peru Creek Basin

Pennsylvania Mine Upper Peru Creek Basin

From the Summit Daily News via The Denver Post:

About 8 miles east of Keystone and a couple of miles south of the 14,000-foot-plus Grays and Torreys peaks, the abandoned Pennsylvania Mine is considered the worst mine in the state. The mine adds toxic heavy metal concentrations and acidifies water flowing into the Peru Creek, a tributary of the Snake River, which feeds Dillon Reservoir.

A three-year, $3 million cleanup project aims to stop that pollution. The project could serve as a model for future mine reclamation efforts around the state, said Paul Peronard, on-scene coordinator for the U.S. Environmental Protection Agency. The collaborative effort is currently under budget and ahead of schedule, he said, even with the added cost of helping Summit County fix the part of Montezuma Road that washed away in early June.

“This is very much a huge partnership,” said Jeff Graves, senior project manager with the Colorado Division of Reclamation, Mining and Safety.

For decades, government agencies and other interested parties faced issues of liability and funding when trying to tackle the mine’s cleanup.

“It’s quite a conundrum,” said Lane Wyatt, a water-quality expert with the Northwest Colorado Council of Governments. “The problem is you don’t really have anybody to point your finger to in places like this to say, ‘You’re responsible. You got to go clean this up.’ “

This year the state is working to place one of two bulkheads, or giant concrete plugs, about 500 feet inside the mine. The bulkheads will block water from leaving through one large entry and stop water from flowing freely through the mine, Graves said.

More Blue River watershed coverage here.


Colorado: Spring flood cuts off road to Montezuma

June 5, 2014

Originally posted on Summit County Citizens Voice:

High runoff taking a toll on roads

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Flood waters caused a major washout of Montezuma Road in Summit County, Colorado. Photo courtesy Summit County Road and Bridge.

By Bob Berwyn

FRISCO — Spring runoff is starting to take a toll on high country roads, with a major washout reported along Montezuma Road and minor flooding in other areas, including a partial washout on the Meadow Creek trailhead road in Frisco.

East of Keystone, Summit County officials reported a 45-washout of Montezuma Road, leaving Montezuma residents withouth vehicular access. According to the county, the road is washed out 15-feet deep near the Peru Creek trailhead.

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Peru Creek: EPA has been testing treatment and settlement of the acid mine drainage during August

August 25, 2013

irrigation.jpg

From the Summit Daily News (Breeana Laughlin):

Throughout August, [Martin McComb], the Environmental Protection Agency’s on-scene coordinator, and his team have been diverting the main flow of heavy-metal-laden water coming from the mine away from the poisonous tailings piles. Environmental protection workers also set up a treatment system that raises the PH of the water in an effort to force some of the metals to drop out of it into a settlement pond before heading downstream. “It’s all about reducing the amount of pollution that flows into the creek,” McComb said. “We are dealing comprehensively with what’s on top of the ground as well as what’s below the ground.”[...]

McComb’s EPA team is embarking on phase one of a six-phase cleanup project at the site. In addition to water treatment efforts, the group has spent the past month improving road conditions to allow dump trucks and other heavy machinery access to the site. The cleanup is expected to take three years and will involve numerous agencies, including the Colorado Division of Reclamation Mining and Safety, Summit County, the U.S. Forest Service, the Blue River and Snake River watershed groups and Northwest Colorado Council of Governments. “It’s nice to see there are so many people involved in this project and in this watershed. I think it’s because it’s such a beautiful area, and near where so many people are living,” McComb said. “I hope we can make an impact — and think we already have.”

Cleanup efforts taken under the project plan will be phased over the next several years and will address threats from acidic discharge that is draining from the mine and tailings along with other mine waste found on the surface.

The bulk of the underground mine work will be conducted under the supervision of the Colorado Division of Reclamation, Mining & Safety. This summer, contractors under the supervision of senior project manager Jeff Graves are digging out a collapsed portion of earth that flooded the culvert in the mine’s portal F, and are working to gain easier access into the underground portions of the mine. “They are really knowledgeable about underground work and have a lot of experience,” McComb said. “For us, it’s a good way to partner with people who are specialized and really know what they’re doing.”

More restoration/reclamation coverage here.


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