Posted on January 31, 2016 by Bob Berwyn
Mercury from the Craig Station power plant in northwest Colorado pollutes lakes in Rocky Mountain National Park. @bberwyn photo.
Local, regional controls help improve global picture
Global mercury emissions dropped by nearly a third between 1990 and 2010, according to a new study that tried to identify patterns and trends in mercury pollution.
Rapid economic development in Asia means higher mercury emissions, but reductions in North America were enough to offset the increases, according to scientists from China, Germany, Canada and the U.S.
Mercury is a metallic element that poses environmental health risks to both wildlife and humans when converted to methylmercury in ecosystems. It can be converted into gaseous emissions during various industrial activities, as well as natural processes like volcanic eruptions. Continue reading
Filed under: air quality, Environment | Tagged: air quality, Environment, Mercury, methylmercury, pollution, toxic releases | Leave a comment »
Posted on October 1, 2015 by Bob Berwyn
Got smog? EPA wants to cut ozone, but will face a challenge on new standard.
Environmentalists say new rule is to weak; industry asks Congress to step into the fray
The EPA’s new smog-fighting ozone standard is likely headed down the same path as the agency’s other recent initiatives to improve the environment.
Like the recently updated wetlands rule and the Clean Power Plan, the new ozone limit was immediately criticized from all sides. Environmental advocates said the agency ignored its own experts when it set the new limit at 70 parts per billion. Industry claims the new rule will cut profits and cost jobs. Continue reading
Filed under: air quality, Environment | Tagged: air quality, Environment, EPA, ozone, ozone standard, pollution, smog | Leave a comment »
Posted on September 30, 2015 by Bob Berwyn
More monitoring and data transparency required
Oil refineries will have to do a better job of limiting pollutants that cause cancer and respiratory ailments under updated EPA regulations that require fenceline monitoring and more transparent data on emissions.
The regulations cover controls for flares, pressure relief devices, storage tanks, and delayed coker operations. The EPA expects that the rule will result in a reduction of 5,200 tons per year of toxic air pollutants, and 50,000 tons per year of volatile organic compounds, chemical precursors to ozone.
The agency also estimates the new standards will reduce greenhouse gas emissions from refineries by about 660,000 tons per year at 150 refineries around the country with little impact to the cost of petroleum products. Continue reading
Filed under: air quality, Environment | Tagged: air quality, Environment, EPA, new refinery regulations, oil refinieries, pollution | Leave a comment »
Posted on September 26, 2015 by Bob Berwyn
Airlines could save money and cut emissions by adjusting the rhythm of transatlantic flights. @bberwyn photo.
Changing flight intervals could save $10 million per year
By Bob Berwyn
Tweaking flight paths across the Atlantic could yield huge savings in fuel costs and help cut airline greenhouse gas emissions.
“If the lateral separation between the aircraft can be reduced, they can be spaced closer and remain more in line with their optimum flight paths. Overall, this would produce fuel economy as most aircraft save fuel at higher cruise altitudes,” said Antonio Trani, director of Virginia Tech’s Air Transportation Systems Laboratory and a professor of civil and environmental engineering.
Trani and fellow researchers reached their conclusions after studying flight information and fuel consumption for air traffic in the North Atlantic oceanic airspace. The research is part of the Future Air Navigation System started in the 1990s that focused on communication between aircraft and air traffic control services, conducted for the Federal Aviation Agency. Continue reading
Filed under: Environment, global warming, Travel | Tagged: airlines, climate change, Environment, greenhouse gases, pollution, transportation, Travel | Leave a comment »
Posted on September 25, 2015 by Bob Berwyn
Plumes of smoke and flames rise from an eruption at Bárðarbunga volcano, Iceland, in 2014. The amount of sulphur dioxide emitted in the six-month eruption was treble that given off by all of Europe’s industry. Credit Dr. John Stevenson
12,000 tons of sulphur dioxide per day …
Researchers in the UK have helped show how volcanoes can affect air quality by quantifying emissions from last year’s eruption of Iceland’s Bárðarbunga volcano.
“The eruption discharged lava at a rate of more than 200 cubic metres per second, which is equivalent to filling five Olympic-sized swimming pools in a minute,” said Dr Anja Schmidt from the School of Earth and Environment at the University of Leeds, who led the study. Continue reading
Filed under: Environment | Tagged: air quality, Bárðarbunga, climate, Iceland, pollution, sulphur dioxide, volcanoes | Leave a comment »
Posted on August 27, 2015 by Bob Berwyn
Microbeads are bad juju for world’s waterways and oceans
This image captured by an electron microscope shows polyethylene microbeads widely used in shower gel. Photo courtesy Thompson/Bakir/Plymouth University.
FRISCO — Simple, everyday uses of some cosmetics and cleaning products releases huge amounts of plastic micropollution into the environment, potentially at levels harmful to marine life.
Scientists at Plymouth University recently tried to quantify the well-known environmental problem by studying brands of facial scrubs that listed plastics among their ingredients. They used vacuum filtration to sort out the plastic particles and analyzed the debris with electron microscopes, finding that each 150ml of the products could contain between 137,000 and 2.8 million microparticles. Continue reading
Filed under: Environment, rivers, water, water quality | Tagged: Environment, microplastic beads, plastic pollution, pollution | Leave a comment »
Posted on August 25, 2015 by Bob Berwyn
Drainage from the abandoned Pennsylvannia Mine in Summit County, Colorado, has been poisoning Peru Creek and the Snake River for decades, @bberwyn photo.
Common sense tweaks would require more monitoring as well as reclamation
FRISCO — Congress, under fierce lobbying pressure from the mining industry, may not have the political wherewithal to make meaningful changes to mining laws.
But public land agencies could tweak their regulations to reduce the chances of another event like the spill from the Gold King Mine that tainted the Animas and San Juan rivers earlier this month.
A coalition of community and environmental groups hopes to spur those changes at the Department of the Interior and Department of Agriculture with a formal petition under the Administrative Procedures Act. The petition seeks four key changes to mining rules that would go a long way toward averting future toxic spills.
The rules changes would:
- Limit the lifetime of a mine permit,
- Impose enforceable reclamation deadlines and groundwater monitoring requirements on mines
- Require regular monitoring and inspections,
- And limit the number of years that a mine can remain inactive.
Filed under: BLM, Environment, rivers, US Forest Service, water, water quality | Tagged: Animas River spill, Environment, Grand Canyon, mining law reform, mining laws, pollution, uranium mining | Leave a comment »