[미국] 환경보호국, 골드킹(GOLD KING) 광산 안정화 작업 재개

미국 환경보호국은 골드킹광산에서 지난 가을에 시작된 일을 완성하기 위해 계약자들을 동원한다.

이 작업은 광산 입구의 지속적인 안전화뿐만 아니라 입구 앞에 있는 광산 폐기물 더미의 추가적인 안전화를 포함한다. 환경보호국의 계약자는 7월 9일 토요일에 이 일을 시작하며 2016년 10월까지 작업을 계속할 예정이다.

환경보호국은 글래드스톤(Gladstone)에 있는 중간물처리 플랜트가 광산에서 나오는 것을 포획해 처리하기를 계속할 것이라고 예상한다. 그러나 이 작업이 하류 유역에 어떤 영향을 준다면, 환경보호국은 골드킹광산 주주들 알림과 환경보호국 웹사이트의 통보 계획에 따라 주주들에게 통지할 예정이다.

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EPA SAYS STABILIZATION WORK RESUMING AT GOLD KING MINE

The U.S. Environmental Protection Agency is mobilizing contractors to complete work started last fall at the Gold King Mine. This work involves the continued stabilization of the mine adit, as well as additional stabilization of the mine waste pile located in front of the adit. EPA’s contractor will begin this work on Saturday, July 9, and will continue work through October 2016.

EPA anticipates that the interim water treatment plant at Gladstone will continue to capture and treat any discharge from the mine. However, should any of this work impact downstream watersheds, EPA will notify stakeholders in accordance with the Gold King Mine Stakeholders Alert and Notification Plan available on EPA’s website.

The planned work activities include:
Continue work outside of the Gold King Mine (GKM) adit and portal by installing steel bracing and concrete.
Work with San Juan County to develop a plan for managing road dust from vehicle traffic related to cleanup activities.
Implement the GKM Stakeholders Alert and Notification Plan with updates as needed.
Continue to operate the interim water treatment plant (IWTP) at Gladstone to treat discharge from GKM adit.
Remove solids from the retention ponds and filter bags at the IWTP and place them in the nearby drying area, which was constructed in June 2016.
Transport and dispose of dry solids from the IWTP at a local repository (if one is available) or landfill.
Conduct an analysis of alternatives to continued operation of the IWTP and engage the public in the process.

EPA issued a memorandum in March 2016 establishing a consultation process to help its regional offices prepare for work at hardrock mining and mineral processing sites with possible fluid hazards. The memo includes precautionary measures intended to prevent the type of event that occurred at GKM on Aug. 5, 2015, including headquarters technical consultation. The consultation process for GKM has been completed, including review of site-specific work plans, a technical assessment of the potential for a fluid release, and verification of a carefully designed and coordinated contingency plan.

For more information, visit www.epa.gov/goldkingmine/

[출처: Water World / 2016년 7월 18일]