21st Century North Carolina Air Quality

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Last Page Update: 01/06/2007
Brick Manufacturing Facility

EPA Proposes Changes to "Once-in-Always-in" for Hazardous Air Pollutants

Jan. 03 - The EPA is proposing changes to the "once-in-always-in" policy for major sources of hazardous air pollutant emissions. Under the proposed changes, a major source may become an area source at any time by limiting its potential to emit for hazardous air pollutants (HAP) to below the major source thresholds of 10 tons per year (tpy) of any single HAP or 25 tpy of any combination of HAPs. The proposal would end the "once-in-always-in" policy that has been applied to MACT facilities. The proposed rule appeared in the Federal Register on January 3, 2007. The EPA will accept comments on the proposed rule changes for the next 60 days. More...

DAQ Team Develops Database with Statewide MACT Information

The DAQ MACT Team has developed an extensive database with statewide information about MACT facilities. (Click here for statewide data for select MACT standards, as of June 13, 2006.)

During the past year the MACT Team has spearheaded a major effort to identify MACT facilities and assist DAQ inspectors in implementing the federal designed to reduce hazardous air pollutant emissions. In addition, many facilities will be required to conduct a facility-wide analysis, which may include dispersion modeling, to assure that air standards are not exceeded.

EPA Amends the Organic Liquid Distribution (OLD) MACT

The EPA published amendments to the Organic Liquid Distribution (OLD) MACT in the Federal Register on July 28, 2006. In addition to several technical corrections, the amended rule revises the provisions dealing with vapor balancing for transfer racks. In addition to allowing the routing of displaced HAP vapors to a storage tank with a common header, the amended rule allows vapor balancing back to the transport vehicle for storage tanks when they are being filled with organic liquids.

Key Date Arrives for Brick Mfg. MACT

The MACT compliance date for existing brick manufacturing sources was May 16, 2006. In the Fayetteville region, Triangle Brick Wadesboro, located in Anson County, recently completed MACT stack testing for the dry limestone adsorber (DLA) installed on its existing brick kiln. Hanson Brick, located in Sampson County, recently requested a MACT avoidance permit condition and proposed to stay below the 10 tons per hour production threshold level specified in the MACT rule.

Looking at statewide permit actions during the past year, Lee Brick and Tile (5300024) in Lee County, Triangle Brick Merry Oaks (1900077) in Chatham County, and General Shale Brick Moncure in Chatham County, all received Title V permit revisions that specify brick manufacturing MACT requirements and permit language. (See Map of Brick MACT Facilities in NC.) Based on a review of the statewide MACT database, at least two facilities were granted compliance extensions. Pine Hall Brick, located in Rockingham County, received a 6-month extension to November 16, 2006, while Boral Brick Salisbury, located in Rowan County, received a 12-month compliance extension to May 16, 2007. In addition to the requirements of 40 CFR Part 63, brick manufacturing MACT facilities are required to address the "last MACT toxics demonstration" under the North Carolina air toxics regulations.

Facility Studying Use of Test Data for Low-Risk Demonstration under MACT Subpart DDDD

JELD-WEN Marion, located in McDowell County, has conducted source testing to study the feasibility of implementing the low-risk demonstration option in the Plywood and Composite Wood Products MACT Subpart DDDD. A site-specific demonstration showing that HAP emissions present a low risk to the surrounding area is necessary for a facility to become part of the de-listed low-risk subcategory under Subpart DDDD.

Compliance Date for the MON (Subpart FFFF) Extended

The EPA promulgated amendments to the Miscellaneous Organic NESHAP (MON) on July 14, 2006. (See FR on July 14, 2006.) In previous rulemaking, the EPA extended the compliance date for existing sources under the MON to May 10, 2008. The earlier amendments to the rule were published in the Federal Register on March 1, 2006. (See FR on March 1, 2006.)

Plywood and Composite Wood Products MACT (Subpart DDDD) Amended

The EPA promulgated changes to the Plywood and Composite Wood Products MACT in the Federal Register on February 16, 2006. In addition to key changes regarding the low-risk demonstration portion of the rule, the compliance date for the standard has been pushed back twelve months to October 1, 2008. (See FR on Feb. 16, 2006.)

Recent MACT News and Archive

EPA amends Organic Liquid Distribution (OLD) MACT - 07/28/06.
EPA promulgates amendments to the Misc. Organic NESHAP (MON) - 07/14/06.
EPA proposes residual risk rule for the HON - 06/14/06.
EPA proposes NESHAP for stationary reciprocating internal combustion engines - 06/12/06.
EPA proposes Changes to the Misc. Coating Manufacturing MACT - 05/17/06.
EPA amends Startup, Shutdown, and Malfunction (SSM) for NESHAPs - 04/20/06.
EPA Residual Risk - Gasoline Distr. MACT - No Changes - 04/06/06.
Triangle Brick - MACT Source Test for DLA Controls - 03/15/06.
Lee Brick and Tile - New Kiln with DLA Controls - 03/13/06.
DAQ studying NC Air Toxics and the Boiler MACT - 03/09/06.
EPA amends MON (Subpart FFFF) - 03/01/06.
EPA amends PCWP (Subpart DDDD) MACT - 02/17/06.
Hearing on Amending Portland Cement NESHAP - 01/09/06.
EPA amends Metal Can Surface Coating NESHAP - 01/06/06.
EPA removes MEK from the List of HAPs - 12/19/05.
EPA proposes Amendments to the MON (MACT) - 12/08/05.



DAQ MACT Team Leads Outreach Effort

The NC Division of Air Quality (DAQ) MACT Team has lead statewide efforts to identify MACT facilities and assist DAQ inspectors in implementing the program to reduce hazardous air pollutant emissions. Many facilities will be required to conduct a facility-wide analysis, which may include dispersion modeling, to assure that air standards are not exceeded.

OLD MACT Standard Revised The EPA recently promulgated changes to the Organic Liquid Distribution MACT. (See FR on July 28, 2006.) The agency had earlier extended the comment period for the amendments that were proposed on Nov. 14, 2005. The proposed amendments were intended to clarify the applicability and control requirements for storage tanks and transfer racks, and amend the recordkeeping and reporting requirements for affected sources for which there are no control requirements. (See FR on Dec. 29, 2005.)

EPA Amends the Boiler MACT The EPA is making a limited number of amendments to 40 CFR 63.7507 and appendix A to the final rule to improve and clarify the process for demonstrating eligibility to comply with the health-based alternatives contained in the final rule. Overall, however, they are retaining the health-based compliance alternatives in substantially the same form. (See FR on Dec. 28, 2005.)