United States
Environmental Protection
Agency

August 2006
EPA530-F-06-030
www.epa.gov/osw
in IV1ACT
      for
    Action
       EPAis requesting comment on several issues regarding the national emission
    standards for hazardous air pollutants (NESHAP) for new and existing hazardous waste
    combustors, which were issued on October 12,2005. The NESHAPs are based on the
    maximum achievable control technology (MACT) for hazardous waste combustors.
    These technology-based standards reduce emissions of hazardous air pollutants,
    including lead, mercury, arsenic, dioxin and furans, and hydrogen chloride and chlorine
    gas. In addition, emissions of parti culate matter are also reduced.
       EPAis requesting comment on several issues regarding the national emission
    standards for hazardous air pollutants. In addition, EPAis proposing amendments to
    several compliance and monitoring provisions in that rule.
       Issues subj ect to reconsideration include:
           Subcategorization of Liquid Fuel Boilers by Heating Value
           Correcting Total Chlorine (TCI) Data to 20 ppmv
           Use of PS-11 and Procedure 2 As Guidance for Extrapolating the Alarm Set-
           Point of a Paniculate Matter Detection System (PMDS)
           Tie-Breaking Procedure for New Source Standards
           Beyond-the-Floor Analyses to Consider Multiple HAP That Are Controlled by
           a SingleMechanism
           Dioxin/Furan Standard for Incinerators with Dry Air Pollution Control Devices
           Provisions of the Health-Based Compliance Alternative
       The combustors affected by this rule detoxify waste or recover energy from
    hazardous waste and include incinerators, cement kilns, lightweight aggregate kilns,
    boilers and process heaters, and hydrochloric acid production furnaces. EPA estimates
    that 145 facilities operate 265 devices that bum hazardous waste.
       The Agency believes the result of controlling these pollutants better will improve
    public health, particularly respiratory conditions. Populations residing near hazardous
    waste combustors may benefit the most from implementation of these standards.
       EPAis accepting comment on this proposal for 45 days following publication in the
    Federal Register.

    Background
       EPA issued the national emission  standards for hazardous air pollutants for new and
    existing hazardous waste combustors on October 12,2005. Subsequently, the
    Administrator received four petitions for reconsideration of the NESHAP final rule. In this

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proposed rule, EPA is providing the public with an opportunity to comment on several issues
for which we are granting a petitioner's request for reconsideration.

For  More  information
    This fact sheet and other documents are available on the Internet at http://
www.epa.gov/epaoswer/hazwaste/combust/.
    To find out more detailed information or to ask a question, visit
http://waste.custhelp.com and click on Find an Answer or Submit a Question.

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