Reclaiming the Sierra

New Sierra Water Bodies Listed as Impaired for Mercury

December 3, 2010

23 November 2010 – The California Regional Water Quality Board recently released an updated 303(d) list designating even more Sierra Nevada streams and reservoirs as being impaired for mercury. The vast majority of mercury contamination in the Sierra results from the large scale use of mercury in historic gold mining operations. Contaminated sediment from the […]