Board rejects appeal of air permit for coal cleaning project at Navajo plant

The Environmental Appeals Board at the U.S. Environmental Protection Agency on Aug. 30 rejected an appeal from a private citizen, Shawn Dolan, of an air permit that EPA’s Region 9 had issued in April to the Salt River Project for a coal cleaning project at the Navajo Generating Station in Arizona.

Dolan wanted a different technical method used to measure opacity from the project. But the board affirmed that the measurement methods approved under the permit are sufficient.

Navajo is a 2,250-MW coal plant. The New Source Review permit at issue authorized construction and operation of a Refined Coal Treatment System, which involves treating raw coal with cement kiln dust and calcium bromide so as to reduce stack emissions of mercury and NOx. This system would include two new coal feed belt conveyors that would divert coal from the existing plant feed system, with additives then mixed with the coal and the coal then returned to the existing conveyor system.

About Barry Cassell 20414 Articles
Barry Cassell is Chief Analyst for GenerationHub covering coal and emission controls issues, projects and policy. He has covered the coal and power generation industry for more than 24 years, beginning in November 2011 at GenerationHub and prior to that as editor of SNL Energy’s Coal Report. He was formerly with Coal Outlook for 15 years as the publication’s editor and contributing writer, and prior to that he was editor of Coal & Synfuels Technology and associate editor of The Energy Report. He has a bachelor’s degree from Central Michigan University.