Posts tagged Environmental Protection Agency
CU’s biotechnology building earns LEED platinum rating
0October 1, 2012
Oct. 1, 2012
The University of Colorado Boulder’s Jennie Smoly Caruthers Biotechnology building has received a Leadership in Energy and Environmental Design, or LEED, platinum rating — the highest possible evaluation — from the United States Green Building Council.
The 336,800-square-foot research and teaching facility opened in April on the university’s east campus. More than 60 faculty and 500 researchers, staff and students work inside, tackling a wide swath of challenges from cancer and heart disease to the development of new biofuels. LEED certification is a national benchmark for sustainable design, construction, operation and maintenance.
The building posed intense energy and water needs as well as complex safety requirements. “Earning a LEED platinum rating for such a large research building highlights the engineering challenges of providing safe and practical research space while ensuring the highest level of sustainability,” said Moe Tabrizi, director of campus sustainability.
The result is a building that is 30 percent more energy and water efficient than recently built buildings with a similar function. One tactic used by designers was to group labs with similar functions near each other in the building to centralize common lab equipment and maximize the efficiency of energy use, ventilation and heat recovery. The building’s mechanical and electrical systems incorporate significant energy savings and resource recovery.
The facility will have an array of large-scale, ground-mounted solar panels to help fulfill its energy needs. It also features evaporative cooling, which is the most energy-efficient cooling method in Colorado’s dry climate; daylight harvesting, lighting controls and LED technology; energy-efficient freezer compressors and lab exhaust fume hoods; low-flow plumbing and additional features.
The new building, which is prominent when accessing campus from Colorado Avenue and Foothills Parkway, also matches CU-Boulder’s distinct architectural look.
“This project demonstrates that we can achieve a high-performing, technically complex facility that blends our Tuscan Vernacular — or rural Italian — style with the demands of cutting-edge, 21st century world-class research,” said Paul Leef, campus architect.
The design team and campus engineers undertook a meticulous engineering process that combined best practices in green building, LEED requirements, and recommendations from Labs21, a program of the U.S. Environmental Protection Agency and U.S. Department of Energy that is dedicated to improving the environmental performance of laboratories.
CU-Boulder is a sustainability leader in higher education. The campus currently has five LEED platinum rated buildings, eight gold rated buildings and one silver. The university is committed to earning gold ratings or higher for all new construction and renovations on campus.
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CU study: Global warming increasing heavy metals in streams
0September 7, 2012
Increase in metal concentrations
in Rocky Mountain watershed
tied to warming temperatures
Warmer air temperatures since the 1980s may explain significant increases in zinc and other metal concentrations of ecological concern in a Rocky Mountain watershed, reports a new study led by the U.S. Geological Survey and the University of Colorado Boulder.
Rising concentrations of zinc and other metals in the upper Snake River just west of the Continental Divide near Keystone, Colo., may be the result of falling water tables, melting permafrost and accelerating mineral weathering rates, all driven by warmer air temperatures in the watershed. Researchers 
observed a fourfold increase in dissolved zinc over the last 30 years during the month of September.
Increases in metals were seen in other months as well, with lesser increases seen during the high-flow snowmelt period. During the study period, local mean annual and mean summer air temperatures increased at a rate of 0.5 to 2.2 degrees Fahrenheit per decade.
Generally, high concentrations of dissolved metals in the Snake River watershed are primarily the result of acid rock drainage, or ARD, formed by natural weathering of pyrite and other metal-rich sulfide minerals in the bedrock. Weathering of pyrite forms sulfuric acid through a series of chemical reactions, and pulls metals like zinc from minerals in the rock and carries these metals into streams.
Increased sulfate and calcium concentrations observed over the study period lend weight to the hypothesis that the increased zinc concentrations are due to acceleration of pyrite weathering. The potential for comparable increases in metals in similar Western watersheds is a concern because of impacts on water resources, fisheries and stream ecosystems. Trout populations in the lower Snake River, for example, appear to be limited by the metal concentrations in the water, said USGS research biologist Andrew Todd, lead researcher on the project.
“Acid rock drainage is a significant water quality problem facing much of the Western United States,” Todd said. “It is now clear that we need to better understand the relationship between climate and ARD as we consider the management of these watersheds moving forward.”
Warmer temperatures and earlier snowmelt runoff have been observed throughout mountainous areas of the western United States where ARD is common, but it is not known if these changes have triggered rising acidity and metal concentrations in other “mineralized” watersheds because of lack of comparable monitoring data, according to the research team.
CU-Boulder Professor Diane McKnight, a collaborator on the project, has generated much of the upper Snake River data through research projects conducted with her students since the mid-1990s. McKnight said students in her environmental engineering and environmental studies class like Caitlin Crouch — a study co-author who received her master’s degree under McKnight — are highly motivated to understand ARD problems.
“Student can see that their research will have direct applications to addressing a critical issue for Colorado,” said McKnight, professor in the civil, environmental and architectural engineering department and a fellow in CU’s Institute of Arctic and Alpine Research.
In cases where ARD is linked directly with past and present mining activities it is called acid mine drainage, or AMD. Another Snake River tributary, Peru Creek, is largely devoid of life due to AMD generated from the abandoned Pennsylvania Mine and smaller mines upstream and has become a target for potential remediation efforts.
The Colorado Division of Reclamation Mining and Safety, in conjunction with other local, state and federal partners, is conducting underground exploration work at the mine to investigate the sources of heavy metals-laden water draining from the mine entrance. The new study by Todd and colleagues has important implications in such mine cleanup efforts because it suggests that establishing attainable cleanup objectives could be difficult if natural background metal concentrations are a “moving target.”
A study on the subject was published in the journal Environmental Science and Technology. Other collaborators include Andrew Manning and Philip Verplanck of USGS. The data analyzed for the study came from INSTAAR, the USGS and the U.S. Environmental Protection Agency.
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CU study: Nitrogen damage to RMNP could become irreversible
0July 10, 2012
A new study led by the University of Colorado Boulder indicates air pollution in the form of nitrogen compounds emanating from power plants, automobiles and agriculture is changing the alpine vegetation in Rocky Mountain National Park.
The emissions of nitrogen compounds to the atmosphere are being carried to remote areas of the park, altering sensitive ecosystems, said CU-Boulder Professor William Bowman, who directs CU-Boulder’s Mountain Research Station west of Boulder and who led the study. “The changes are subtle, but important,” he said. “They represent a first step in a series of changes which may be relatively irreversible.”
A new study led by the University of Colorado Boulder indicates air pollution in the form of nitrogen compounds emanating from power plants, automobiles and agriculture is changing the alpine vegetation in Rocky Mountain National Park.
The emissions of nitrogen compounds to the atmosphere are being carried to remote areas of the park, altering sensitive ecosystems, said CU-Boulder Professor William Bowman, who directs CU-Boulder’s Mountain Research Station west of Boulder and who led the study. “The changes are subtle, but important,” he said. “They represent a first step in a series of changes which may be relatively irreversible.”
In other regions of the world, higher amounts of nitrogen pollutants correlate with decreased biodiversity, acidified soils and dead stream organisms like trout, said Bowman. “There is evidence that indicates once these changes occur, they can be difficult if not impossible to reverse. It is best to recognize these early stages before the more harmful later stages happen.”
The study site was an alpine meadow roughly one mile east of Chapin Pass in the Mummy Range of Rocky Mountain National Park. Bowman and his team analyzed the plant communities and soils under ambient levels of nitrogen deposition and compared them to plots with added nitrogen to simulate the increasing atmospheric nitrogen pollution expected in the coming decades. The results indicated changes in plant abundances already were occurring under ambient conditions, but to date no changes in soils were detected.
During the course of the three-year study, rising levels of nitrogen in the soils correlated with large increases in a common species of sedge shown to flourish in other nitrogen addition studies. Bowman said the team anticipates that the diversity of vascular plant species will rise with increasing nitrogen deposition, then decrease with more rare species being excluded by competition from other plant species. “While the changes are relatively modest, they portend that other more environmentally adverse impacts may be on the horizon in Colorado’s alpine areas,” said Bowman.
A paper on the subject was published in the June issue of the Journal of Environmental Management. Co-authors on the study included John Murgel, a former CU-Boulder undergraduate student now completing graduate work at Colorado State University, and Tamara Blett and Ellen Porter of the Air Resources Division of the National Park Service in Lakewood, Colo. The study was funded by the National Park Service.
Previous studies by Bowman and others have shown vegetation changes and soil acidification has been occurring due to increasing nitrogen deposition at other alpine sites in Colorado, including Niwot Ridge. Niwot Ridge is a National Science Foundation-funded Long-Term Ecological Research site administered by CU-Boulder and located adjacent to the university’s Mountain Research Station located some 30 miles west of the city.
Given the projected population growth in Front Range cities in the greater Denver area and increasing agricultural development, nitrogen deposition is expected to increase steadily in Rocky Mountain National Park over the next several decades, said Bowman, a professor in CU-Boulder’s ecology and evolutionary biology department.
The high-elevation ecosystems of the park are a magnet for thousands of visitors each year who have opportunities to see plants and animals well adapted to the severe climate above treeline, said Bowman, but such ecosystems are the most sensitive to adverse impacts from air pollutants. Previous studies by other researchers have documented ongoing changes in the algae found in several of the Rocky Mountain National Park’s high elevation lakes due to nitrogen pollution, he said.
While the park is also a haven for fishermen hoping to catch trout in pristine waters, continued inputs of nitrogen pollutants are a hazard to the health of both trout and their food sources, said Bowman, also a fellow of CU-Boulder’s Institute of Arctic and Alpine Research. It starts when the ability of the land plants and soils to take up the nitrogen is exceeded, causing soils to become acidified, he said.
Other parts of the Colorado Front Range have exhibited signs of acidification at the highest elevations, Bowman said. “Once this happens, soluble aluminum leaches from soils and begins to show up in streams and lakes. This aluminum is quite toxic to many aquatic animals,” he said.
“The take-home message is that the amount of nitrogen deposition reaching the tundra in Rocky Mountain National Park has already passed an important threshold and may lead to more serious environmental impacts,” said Bowman. “It’s not inconceivable that continued negative ecological impacts in the park due to nitrogen pollution could eventually impact tourism in Colorado.”
Officials from Environmental Defense and Trout Unlimited petitioned the State of Colorado and the Environmental Protection Agency to reduce emissions of nitrogen pollution in 2004. This effort resulted in a 2007 plan to lower nitrogen emissions on a voluntary basis to reduce impacts to Rocky Mountain National Park.
Excel Energy’s recent switch to natural gas in some of its power plants is one of many steps toward limiting nitrogen emissions, said Bowman. Ongoing efforts by air quality managers and representatives from the Colorado agricultural industry are also working on management practices that would lower nitrogen emissions.
In other regions of the world, higher amounts of nitrogen pollutants correlate with decreased biodiversity, acidified soils and dead stream organisms like trout, said Bowman. “There is evidence that indicates once these changes occur, they can be difficult if not impossible to reverse. It is best to recognize these early stages before the more harmful later stages happen.”
The study site was an alpine meadow roughly one mile east of Chapin Pass in the Mummy Range of Rocky Mountain National Park. Bowman and his team analyzed the plant communities and soils under ambient levels of nitrogen deposition and compared them to plots with added nitrogen to simulate the increasing atmospheric nitrogen pollution expected in the coming decades. The results indicated changes in plant abundances already were occurring under ambient conditions, but to date no changes in soils were detected.
During the course of the three-year study, rising levels of nitrogen in the soils correlated with large increases in a common species of sedge shown to flourish in other nitrogen addition studies. Bowman said the team anticipates that the diversity of vascular plant species will rise with increasing nitrogen deposition, then decrease with more rare species being excluded by competition from other plant species. “While the changes are relatively modest, they portend that other more environmentally adverse impacts may be on the horizon in Colorado’s alpine areas,” said Bowman.
A paper on the subject was published in the June issue of the Journal of Environmental Management. Co-authors on the study included John Murgel, a former CU-Boulder undergraduate student now completing graduate work at Colorado State University, and Tamara Blett and Ellen Porter of the Air Resources Division of the National Park Service in Lakewood, Colo. The study was funded by the National Park Service.
Previous studies by Bowman and others have shown vegetation changes and soil acidification has been occurring due to increasing nitrogen deposition at other alpine sites in Colorado, including Niwot Ridge. Niwot Ridge is a National Science Foundation-funded Long-Term Ecological Research site administered by CU-Boulder and located adjacent to the university’s Mountain Research Station located some 30 miles west of the city.
Given the projected population growth in Front Range cities in the greater Denver area and increasing agricultural development, nitrogen deposition is expected to increase steadily in Rocky Mountain National Park over the next several decades, said Bowman, a professor in CU-Boulder’s ecology and evolutionary biology department.
The high-elevation ecosystems of the park are a magnet for thousands of visitors each year who have opportunities to see plants and animals well adapted to the severe climate above treeline, said Bowman, but such ecosystems are the most sensitive to adverse impacts from air pollutants. Previous studies by other researchers have documented ongoing changes in the algae found in several of the Rocky Mountain National Park’s high elevation lakes due to nitrogen pollution, he said.
While the park is also a haven for fishermen hoping to catch trout in pristine waters, continued inputs of nitrogen pollutants are a hazard to the health of both trout and their food sources, said Bowman, also a fellow of CU-Boulder’s Institute of Arctic and Alpine Research. It starts when the ability of the land plants and soils to take up the nitrogen is exceeded, causing soils to become acidified, he said.
Other parts of the Colorado Front Range have exhibited signs of acidification at the highest elevations, Bowman said. “Once this happens, soluble aluminum leaches from soils and begins to show up in streams and lakes. This aluminum is quite toxic to many aquatic animals,” he said.
“The take-home message is that the amount of nitrogen deposition reaching the tundra in Rocky Mountain National Park has already passed an important threshold and may lead to more serious environmental impacts,” said Bowman. “It’s not inconceivable that continued negative ecological impacts in the park due to nitrogen pollution could eventually impact tourism in Colorado.”
Officials from Environmental Defense and Trout Unlimited petitioned the State of Colorado and the Environmental Protection Agency to reduce emissions of nitrogen pollution in 2004. This effort resulted in a 2007 plan to lower nitrogen emissions on a voluntary basis to reduce impacts to Rocky Mountain National Park.
Excel Energy’s recent switch to natural gas in some of its power plants is one of many steps toward limiting nitrogen emissions, said Bowman. Ongoing efforts by air quality managers and representatives from the Colorado agricultural industry are also working on management practices that would lower nitrogen emissions.
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Native Boulder sacred site to be cleaned
0December 15, 2011
Valmont Butte settlements reached; cleanup to begin
The City of Boulder, Honeywell International Inc. and Tusco, Inc. recently reached a settlement with the U.S. Department of Justice in the amount of $350,000, to resolve the U.S. Environmental Protection Agency’s (EPA) costs for its past investigations at the Valmont Butte.
The Valmont Butte property, located at the intersection of 63rd Street and Valmont Road in Boulder County, is comprised of an abandoned ore milling complex and associated tailings ponds. The city purchased the property in 2000. In 2004 and 2005, the EPA investigated the site and prepared a site assessment report.
The City of Boulder also recently reached settlements with Honeywell and Tusco to resolve their liabilities as past owners and operators of the Valmont Butte mill site. Under those settlement agreements, Tusco will pay $300,000 and the remaining costs for remediation will be split 50/50 between the City of Boulder and Honeywell, with the option to resolve the final allocation of costs between the city and Honeywell in an abbreviated, mini-trial process. Honeywell will also be responsible for covering the EPA costs.
The city is now preparing to move forward with cleanup activities at the property. These activities will include the consolidation of contaminated soils into the area of the primary tailings pond, the placement of an engineered cap over the contaminated soils, and the preservation or removal of buildings and structures. Work is expected to begin January 2012 and is expected to be complete in late summer 2012. When work is being conducted in sensitive areas, a tribal monitor and/or an historic archaeologist will observe the excavations.
More information about the settlement agreement and about the Valmont Butte is available at www.valmontbutte.net. For questions about the upcoming work at the Butte, contact Bill Boyes at 303-441-4125.
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Boulder Reservoir receives first Clean Marina certification in Colorado
0May 20, 2011
by Boulder Channel 1
in News
The Boulder Reservoir has received Colorado’s first Clean Marina certification under a new program aimed at protecting water quality and encouraging environmentally-friendly boating and marina practices. The certification was awarded by the recently launched Colorado Marina Association (CMA), a non-profit organization dedicated to delivering the Clean Marinas Colorado Program and promoting clean boating on Colorado’s waterways.
To receive certification, the Boulder Reservoir has met the program’s rigorous criteria and must adhere to a set of ongoing standards and requirements. These standards reflect best management practices for minimizing the environmental impact of boating and marina operations.
“This is an important accomplishment for the Parks and Recreation Department as it demonstrates our commitment to environmental stewardship of the recreational waters of the Boulder Reservoir,” said Kirk Kincannon, director of Parks and Recreation. “We are proud to be the first in the state to receive this certification.”
The Clean Marinas Colorado Program is a voluntary program that targets marinas and individual boaters—providing education and outreach activities that help maintain or restore water quality in Colorado’s major waterways. The program was developed in collaboration with the U.S. Environmental Protection Agency, the Colorado Department of Public Health and Environment – Nonpoint Source Program, U.S. Coast Guard Auxiliary Mile High Flotilla and the Colorado Lake & Reservoir Management Association (CLRMA).
For more information, call Shelly Ruspakka, Parks and Recreation, at 303-413-7214 or visit the Colorado Clean Marina Association’s website at: www.coloradomarinas.org
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Boulder Reservoir receives first Clean Marina certification in Colorado
0May 18, 2011
by Ron Baird, news editor
in News
The Boulder Reservoir has received Colorado’s first Clean Marina certification under a new program aimed at protecting water quality and encouraging environmentally-friendly boating and marina practices. The certification was awarded by the recently launched Colorado Marina Association (CMA), a non-profit organization dedicated to delivering the Clean Marinas Colorado Program and promoting clean boating on Colorado’s waterways.
To receive certification, the Boulder Reservoir has met the program’s rigorous criteria and must adhere to a set of ongoing standards and requirements. These standards reflect best management practices for minimizing the environmental impact of boating and marina operations.
“This is an important accomplishment for the Parks and Recreation Department as it demonstrates our commitment to environmental stewardship of the recreational waters of the Boulder Reservoir,” said Kirk Kincannon, director of Parks and Recreation. “We are proud to be the first in the state to receive this certification.”
The Clean Marinas Colorado Program is a voluntary program that targets marinas and individual boaters—providing education and outreach activities that help maintain or restore water quality in Colorado’s major waterways. The program was developed in collaboration with the U.S. Environmental Protection Agency, the Colorado Department of Public Health and Environment – Nonpoint Source Program, U.S. Coast Guard Auxiliary Mile High Flotilla and the Colorado Lake & Reservoir Management Association (CLRMA).
For more information, call Shelly Ruspakka, Parks and Recreation, at 303-413-7214 or visit the Colorado Clean Marina Association’s website at: www.coloradomarinas.org.
