Dallas-Fort Worth: Lead History
2008 Lead Standard (2008 to Present)
On October 15, 2008, the U.S. Environmental Protection Agency (EPA) substantially strengthened the National Ambient Air Quality Standard (NAAQS) for lead, lowering it tenfold, from 1.5 µg/m³ (measured over two years on a quarterly average) to 0.15 µg/m³ (measured over three years on a rolling three-month average). The lead NAAQS final rule was published in the Federal Register on November 12, 2008, and went into effect on January 12, 2009 (73 FR 66964).
The highest monitored rolling three-month average concentration of lead in ambient air in Collin County from 2006 through 2008 was 0.23 µg/m³, at the lead monitor located on Ash Street in Frisco. The governor recommended to the EPA that a portion of Collin County near the Exide Technologies (Exide) plant in Frisco be designated as nonattainment of the 2008 lead NAAQS.
In the November 22, 2010, Federal Register, the EPA published the determination that an area in Collin County, Texas surrounding the Exide battery recycling plant was not meeting the 2008 NAAQS for lead (75 FR 71033). The area must comply with the new lead standard by the December 31, 2015 deadline.
On August 8, 2012, the commission adopted the Collin County Attainment Demonstration State Implementation Plan (SIP) Revision for the 2008 Lead NAAQS and the Agreed Order between Exide and the TCEQ. The SIP revision contains a reasonably available control measure and a reasonably available control technology analysis, demonstration of attainment through air dispersion modeling, a control strategy demonstration, an emissions inventory, a demonstration of reasonable further progress, and contingency measures. The Agreed Order makes the control strategies and contingency measures included in the Collin County Attainment Demonstration SIP Revision legally enforceable. The SIP revision, Agreed Order, and all supporting documents are posted on the Dallas-Fort Worth: Lead Latest Planning Activities Web page.
Late in the SIP planning process, the City of Frisco and Exide approved an agreement that would result in the sale of approximately 180 acres of undeveloped land surrounding Exide's plant. As part of the agreement, Exide will cease operations by December 31, 2012. The SIP and Agreed Order were revised to provide Exide the option of ceasing operations in accordance with the company's agreement with the City of Frisco. Exide must notify the TCEQ of it's intention to cease operations by November 1, 2012 if the company chooses this option.
1978 Lead Standard (1978 to Present)
In 1978, the EPA promulgated a NAAQS for lead of 1.5 µg/m³. The Texas SIP revision for the control of lead air pollution, adopted March 21, 1980, created a statewide monitoring plan that required ambient air quality monitors near lead point sources that could exceed the lead standard in areas of public exposure. Gould National Battery, Inc. (now Exide Technologies), a battery-recycling plant in Frisco, Collin County, was one such source requiring monitoring, and ambient air monitors were installed in the vicinity in 1981.
The 1990 Federal Clean Air Act (FCAA) Amendments authorized the EPA to designate areas failing to meet the NAAQS for lead. A portion of Collin County, which essentially encompassed the boundaries of the Gould National Battery plant, was designated nonattainment for the lead NAAQS, effective January 6, 1992, and was required to demonstrate attainment by January 6, 1997.
A SIP revision was adopted by the TCEQ June 18, 1993, with controls and contingency measures focused on fugitive dust emissions enforced via agreed orders with the facility and permit provisions. The EPA approved the Collin County lead attainment demonstration SIP submission on November 29, 1994.
The EPA redesignated the Collin County nonattainment area to attainment of the 1978 lead NAAQS, effective December 13, 1999, and approved the TCEQ 10-year maintenance plan required by Section 175A of the FCAA (64 FR 55421). On August 26, 2009, the TCEQ adopted a second 10-year maintenance plan (also required by Section 175A) and an agreed order with Exide to make contingency measures in the plan legally enforceable, and submitted them to the EPA for review.
Comprehensive History of the Texas SIP
This SIP History gives a broad overview of the SIP revisions that have been submitted to the EPA by the State of Texas. Some sections may be obsolete or superseded by new revisions, but have been retained for the sake of historical completeness.