US: The Texas Commission on Environment Quality has discarded legal limits on crystalline silica in ready-mix concrete plants’ dust emissions. Commissioner Bobby Janecka said "I am pretty comfortable moving forward and finalising the proposed revision of the standard permit to bring us back to the point we departed from in 2012." He added that the commission had confirmed the decision with analysis from before the previous rule change, which he attributed to a ‘clerical error.’
Texas Commission on Environment Quality discards crystalline silica limits for ready-mix concrete plants
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