The industry argued that waste coal isn't high enough quality to meet the pollution standards. Environmental groups say the move is bad for public health.
The federal agency said its new policy doesn't mean facilities can exceed pollution limits. Meanwhile, Pa. DEP is developing guidance to evaluate requests to waive permit conditions.
They say miners are at particular risk: “They get dressed, travel down the elevator together…work in confined spaces, breathe the same air, operate the same equipment, and use the same shower facilities.”
The pipeline company said the waivers are necessary to prevent "potential adverse impacts to human health or the environment.” Critics say they are trying to skirt the rules.