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Sulfur Dioxide

EPA cracks down on Billings air pollution

EPA cracks down on Billings air pollution

The federal government is pressing ahead with plans to crack down on air pollution in Yellowstone County, despite protests from the state.

July 26, 2013 3:35 pmLoading…
DEQ, PPL settle air quality violations

DEQ, PPL settle air quality violations

A settlement of air quality violations with PPL Montana will reduce sulfur dioxide pollution in the Billings area, Montana Department of Environmental Quality officials said Monday.

June 10, 2013 6:05 pmLoading…

Montana asks EPA to reconsider SO2 ruling for Yellowstone County

Montana has asked the federal Environmental Protection Agency to reconsider its intent to designate Yellowstone County as failing to meet sulfur dioxide standards.

April 08, 2013 4:50 pmLoading…
EPA: SO2 in county exceeds new limits

EPA: SO2 in county exceeds new limits

The U.S. Environmental Protection Agency intends to declare that Yellowstone County's air fails to meet sulfur dioxide pollution limits based on information showing violations of a new hourly standard.

February 15, 2013 7:30 pmLoading…

ExxonMobil reports flaring incident

Problems at a processing unit caused the ExxonMobil refinery in Lockwood to flare gases to the air last week.

December 05, 2012 11:00 amLoading…

EPA hits refinery with $378K fine

CASPER, Wyo. — Sinclair Oil will pay a $378,000 fine under a settlement with the U.S. Environmental Protection Agency stemming from a 2010 inspection of the company's troubled oil refinery near Rawlins, the agency announced Thursday.

October 11, 2012 11:55 pmLoading…

Montana Sulphur loses pollution plan challenge

Montana Sulphur & Chemical Co.’s yearslong court battle challenging a sulfur dioxide pollution control plan in the Yellowstone Valley came to an end this month.

October 11, 2012 4:34 pmLoading…
EPA signs rule to cut Big Sky's haze pollution

EPA signs rule to cut Big Sky's haze pollution

Federal regulators have approved a new measure meant to help turn Montana's Big Sky Country into Clear Sky Country by forcing industrial plants to cut pollutants that make hazy skies over national parks and wilderness areas.

August 16, 2012 11:03 am Photos

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Feds target Sinclair refinery emissions

CASPER, Wyo. — A federal investigative agency says it will study sulfur dioxide emissions from the Sinclair oil refinery near Rawlins, a move that could open the way for a harder look at the plant’s release of the pollutant.

June 25, 2012 11:45 pmLoading…
Appeals court denies sulfur plant review of pollution regulations

Appeals court denies sulfur plant review of pollution regulations

The Environmental Protection Agency’s actions to develop a plan to control sulfur dioxide pollution in the Yellowstone Valley were reasonable, an appellate court has ruled.

January 24, 2012 5:00 pmLoading…

CHS responsible for Billings' bad smell

The release of sulfur dioxide into the atmosphere early Wednesday morning by the CHS Inc. refinery in Laurel was not enough to cause health problems, said Duane Winslow, director of Yellowstone County Disaster and Emergency Services.

August 24, 2011 11:30 amLoading…

CHS responsible for Billings' bad smell Wednesday morning

The release of sulfur dioxide into the atmosphere early Wednesday morning by the CHS Inc. refinery in Laurel was not enough to cause health problems, said Duane Winslow, director of Yellowstone County Disaster and Emergency Services.

August 24, 2011 11:22 amLoading…

Billings scrutinized over sulfur dioxide

The good news is that sulfur dioxide pollution fell to a new low in 2009 in the Yellowstone Valley, which has struggled for years to cut industrial emissions. The bad news is the area is violating a new federal hourly standard for the gas.

July 09, 2010 10:10 pmLoading…

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