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Timeline and Background Information for Maximum Achievable Control Technology (MACT) for Hazardous Waste Combustors

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HWC MACT Rule Development Timeline

Release Date /How to Request Documents

Title and Description

Link to Rules

March 23, 2006

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Proposed Rule and Administrative Stay for Hazardous Air Pollutants for HWC

Following promulgation of the October 12, 2005 final rule, EPA received four petitions for reconsideration of that rule. In the proposed rule, EPA is granting reconsideration of one issue in the petitions submitted by Ash Grove Cement Company and the Cement Kiln Recycling Coalition: reconsideration of the new source standard for particulate matter for cement kilns that burn hazardous waste. In addition, EPA is staying for three months the effective date of the standard for particulate matter for new cement kilns while EPA reconsiders this provision.

Proposed Rule and

Administrative Stay

Docket ID EPA-HQ-OAR-2004-0022

December 19, 2005

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Direct Final Rule Standards for Hazardous Air Pollutants for Hazardous Waste Combustors

EPA direct final action on the amendments to the national emissions standards for hazardous air pollutants (NESHAP) for hazardous waste combustors which were issued October 12, 2005, under section 112 of the Clean Air Act.

Direct Final Rule

Docket ID EPA-HQ-OAR-2004-0022

December 19, 2005

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Proposed Rule for Standards for Hazardous Air Pollutants for Hazardous Waste Combustors

In this action, amendments are proposed to the national emissions standards for hazardous air pollutants (NESHAP) for hazardous waste combustors which were issued October 12, 2005, under section 112 of the Clean Air Act. In that rule, we inadvertently included three new or revised bag leak detection system requirements for Phase I sources--incinerators, cement kilns, and lightweight aggregate kilns--among implementation requirements taking effect on December 12, 2005, rather than, as intended, after three years when the sources begin complying with the revised emission standards under the NESHAP for hazardous waste combustors. We intended to establish the compliance date for these provisions three years after promulgation--October 14, 2008--because the provisions establish more stringent requirements for Phase I sources, which cannot readily be complied with on short notice, and because these provisions are inextricably tied to the revised emissions standards.

Proposed Rule

Docket ID EPA-HQ-OAR-2004-0022

October 12, 2005

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Final Standards for Hazardous Air Pollutants for HWC

This action finalizes national emission standards for hazardous air pollutants (NESHAP) for hazardous waste combustors (HWCs): hazardous waste burning incinerators, cement kilns, lightweight aggregate kilns, industrial/commercial/institutional boilers and process heaters, and hydrochloric acid production furnaces.

Final Rule

Docket ID EPA-HQ-OAR-2004-0022

Part 1 (pages 59401-59450

Part 2 (pages 59451-59500)

Part 3 (pages 59501-59550)

Part 4 (pages 59551-59579)

February 4, 2005

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Limited Request for Additional Public Comments

EPA distributed by email a direct request for comments on a limited number of issues that were created by the public comments on the proposed hazardous waste combustor MACT rule. The email was sent by Mr. Jim Berlow, Director, Hazardous Waste Minimization and Management Division, to representatives of the following eight organizations and companies:

  • American Chemistry Council
  • Cement Kiln Recycling Coalition
  • Coalition for Responsible Waste Incineration
  • Diversified Scientific Services, Inc.
  • Environmental Technology Council
  • Norlite Corporation
  • Sierra Club
  • Solite Corporation

Cover note (PDF) (2 pp, 14K) - Explains the request for additional comment.

Issues document (PDF) (10 pp, 43K) - Discusses the topics on which we are seeking comment.

Docket ID EPA-HQ-OAR-2004-0022

April 20, 2004

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Proposed Standards for Hazardous Air Pollutants for Hazardous Waste Combustors

This action proposes national emission standards for hazardous air pollutants (NESHAP) for hazardous waste combustors. These combustors include hazardous waste burning incinerators, cement kilns, lightweight aggregate kilns, industrial /commercial /institutional boilers and process heaters, and hydrochloric acid production furnaces, known collectively as hazardous waste combustors (HWCs).

Proposed Rule

Docket ID EPA-HQ-OAR-2004-0022

Part 1 (pages 21197-21385)

Part 2 (pages 21197-21246)

Part 3 (pages 21247-21296)

Part 4 (pages 21297-21346)

Part 5 (pages 21347-21385)

July 2, 2002

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Standards for Hazardous Air Pollutants for Hazardous Waste Combustors Final Replacement Standards and Phase II; Notice of Data Availability

This notice of data availability (NODA) presented the database for public comment in the Federal Register on July 2, 2002. EPA planned to use this database to propose National Emission Standards for Hazardous Air Pollutants (NESHAP) for the following types of hazardous waste burning combustors (HWC): incinerators, cement kilns, light weight aggregate kilns, industrial commercial/institutional boilers and process heaters, and hydrochloric acid production furnaces.

Notice of Data Availability

June 27, 2000

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Standards for Hazardous Air Pollutants for Hazardous Waste Boilers and Industrial Furnaces

This notice of data availability presents for public comment the data base the EPA plans to use to propose National Emission Standards for Hazardous Air Pollutants (NESHAPs) for hazardous waste burning boilers, halogen acid furnaces, and sulfuric acid recovery furnaces (our Phase II combustion
rulemaking).

Notice of Data Availability

September 30, 1999

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Final Standards for Hazardous Air Pollutants for Hazardous Waste Combustors; Final Rule

This final rule was promulgated in 1999 to establish MACTstandards for hazardous waste incinerators, hazardous waste burning cement kilns, and hazardous waste burning lightweight aggregate kilns. These standards were promulgated under joint authority of the Clean Air Act (CAA) and Resource Conservation and Recovery Act (RCRA). The standards limit emissions of chlorinated dioxins and furans, other toxic organic compounds, toxic metals, hydrochloric acid, chlorine gas, and particulate matter.

Final Rule:

Part 1 (PDF) (49 pp, 377K) (pages 52827-52876)

Part 2 (PDF) (49 pp, 362K) (pages 52877 - 52926)

Part 3 (PDF) (49 pp, 784K) (pages 52927 - 52976)

Part 4 (PDF) (49 pp, 463K) (pages 52977 - 53026)

Part 5 (PDF) (50 pp, 559K) (pages 53027 - 53077)

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Instructions to Obtain Technical Support Documents from
Docket ID EPA-HQ-OAR-2004-0022

To use the Regulations.gov
  1. Select Docket Search.
  2. Select "Environmental Protection Agency" from the Agency drop-down menu.
  3. In the Docket ID box, type in the docket number EPA-HQ-OAR-2004-0022 and press the "Submit" button to receive search results. Be patient; loading the documents takes time.

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Instructions to Obtain Technical Support Documents from Actions Before 2004

How can I get a copy of the original support documents and databases for rulemakings before 2004? A CD that contains the original data base and the technical support documents can be requested from EPA. Send your request to:

US Environmental Protection Agency
Office of Resource Conservation and Recovery
1200 Pennsylvania Avenue, NW
Mail Code 5304P
Washington DC 20460

You may also request to have these files emailed to you.

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