ALBUQUERQUE — New Mexico regulators on Tuesday approved a proposed set of rules aimed at protecting groundwater at copper mines despite claims by the Attorney General’s Office that the proposal contradicts existing state law.
The hearing before the state Water Quality Control Commission marked the culmination of months of wrangling over how best to deal with potential contamination at mining sites. The commission heard days of testimony, held public meetings and reviewed volumes of information related to the so-called “copper rule” before voting 9-1 to approve modifications.
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