proposes mercury limits for boilers and incinerators
The United States Environmental Protection
Agency (EPA) has issued proposals that would cut mercury emissions
by more than half and would significantly cut other pollutants
from boilers, process heaters and solid waste incinerators.
The proposed rules would define some “non-hazardous
secondary materials” as solid waste, which would require units
that burned those materials to be defined under section 129 of
the Clean Air Act (CAA) as solid waste incineration units, rather
than as fuel under less stringent standards for boilers under
section 112 of the CAA.
EPA is also proposing to identify which non-hazardous
secondary materials would be considered solid waste and which
would be considered fuel. This distinction would determine whether
a material can be burned in a boiler or whether it must be burned
in a solid waste incinerator. The agency is also soliciting comment
on several other broader approaches that would identify additional
non-hazardous secondary materials as solid waste when burned
in combustion units.
The limits would take effect after a 45 day
public comment period.