Air quality testing at Pavillion shows no immediate problems

Apr 3, 2012 By Martin Reed, Staff Writer

Preliminary review of results from an air monitoring station in an area several miles east of Pavillion did not reveal pollution levels exceeding federal standards, according to the Wyoming Department of Environmental Quality.

The state agency installed a mobile monitoring station that began collecting data Jan. 27, 2011, on land in the Pavillion area downwind of gas development equipment and infrastructure.

The preliminary review of air quality data through Dec. 31 "does not show any exceedances of the National Ambient Air Quality Standards," according to a letter from the department's Air Quality Resource Management Program manager Darla Potter on March 15.

The Department of Environmental Quality installed the air monitoring equipment as investigation continued into concerns of groundwater contamination in the area possibly because of energy production activity.

Some had expressed concerns about air quality coupled with worries about groundwater pollution, all from the energy industry's operations in the area.

The site is one of about 21 operated by the agency at various locations around the state.

The agency's Air Quality Division stopped collecting data on March 31 and will begin reviewing the 14 months of results collected, wrote Potter in the letter to Vince Dolbow, whose Powerline Road property had the monitoring equipment.

Potter told Dolbow the agency has met data collection objectives for ozone, oxides of nitrogen, methane and non-methane hydrocarbons, particulate matter and various weather measurements.

In an e-mail accompanying Potter's letter, Department of Environmental Quality director John Corra said the agency will have a public meeting in Pavillion to discuss the air-monitoring data at a later date.

In her letter to Dolbow, Potter said the contractors hired by the agency should finish their data validation by April 30. The agency's Air Quality Division will review the data afterward.

The agency has posted near real-time data on the agency's website at since monitoring began. Data is still available at the site.

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