CARSON CITY, Nev.–State regulations, enacted in 2006 that require mercury emissions controls to reduce the amount of mercury emitted into the air from precious metal mines, are producing some early positive results, according to the Nevada Division of Environmental Protection (NDEP).
In an update on recent activities, NDEP Administrator Leo Drozdoff today announced that the Mercury Air Emissions Control Program has resulted in recent proactive actions by two mining companies to reduce mercury emissions, as well as an enforcement action against one company.
He applauded two companies for their early installation of new and improved mercury emissions control equipment in accordance with the incentive portion of the regulations.
Goldcorp and Round Mountain Gold Corp. have installed deep-bed sulfur-impregnated carbon filters on mercury emitting units at their Marigold and Smokey Valley mines respectively.
Preliminary test results reported by Goldcorp show a dramatic reduction in annual mercury air emissions from those units at its Marigold Mine, from 893 pounds in 2006 to less than one pound in 2007. Round Mountain will report its results soon. By taking the risk of installing new technology before their Nevada Maximum Achievable Control Technology (NvMACT) requirements have been determined, the companies will each earn an Early Reduction Credit (ERC). An ERC gives a company two extra years to modify or replace its mercury emissions control equipment, should NDEP determine that the technology they’ve installed does not meet the yet-to-be-established NvMACT requirements. Read the rest of this entry »
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