SOURCE: The Doe Run Company

July 07, 2006 18:41 ET

Doe Run Achieves National Ambient Air Quality Standard for Second Quarter

ST. LOUIS, MO -- (MARKET WIRE) -- July 7, 2006 -- The Doe Run Company today announced that its Herculaneum, Mo., smelter facility met the National Ambient Air Quality Standard (NAAQS) for lead in the second quarter of 2006.

According to data collected by Doe Run, final second quarter results from the 10 strategically positioned air monitors in Herculaneum ranged from 0.2 to 1.5 micrograms of lead per cubic meter of air, placing the smelter within the Environmental Protection Agency (EPA)-specified air quality standard of 1.5 micrograms of lead per cubic meter of air (averaged over a calendar quarter).

"We believe recent efforts, such as additional ventilation and technology upgrades made earlier this year, are having a positive impact," said Gary Hughes, general manager of the company's Herculaneum operation. "While we have consistently met the standard at nine of 10 air monitoring stations, a single monitor located within 200 yards of the facility has either been slightly over or under the standard. We're pleased to have met the standard this quarter, and we're committed to working with the EPA and the Missouri Department of Natural Resources (MDNR) to identify further measures that will allow us to consistently meet the standard."

The MDNR is currently reviewing the proposed State Implementation Plan (SIP) control strategies to determine if those measures will enable the area nearest the Herculaneum facility to consistently reach the NAAQS. A SIP identifies control measures and contingencies to be taken in order to reach expected objectives -- in this case, to achieve the NAAQS for lead. A new SIP will be submitted by MDNR for the EPA's approval in April 2007.

Based in St. Louis, The Doe Run Company is a privately held natural resources company dedicated to environmentally responsible mineral production, metals fabrication, recycling and reclamation. The company and its subsidiaries deliver products and services needed to provide power, protection and convenience through premium products and associated metals including lead, zinc, copper, gold and silver.

As the operator of one of the world's only multi-metal facilities and the Americas' largest integrated lead producer, Doe Run employs more than 5,000 people, with U.S. operations in Missouri, Washington and Arizona, and Peruvian operations in Cobriza and La Oroya. Committed to sustainable development, The Doe Run Company has helped bring electrical power, business training, educational opportunities and improved telecommunications to rural communities in Peru and the U.S. For more information, visit http://www.doerun.com.

"Safe Harbor" Statement under the Private Securities Litigation Reform Act of 1995: Statements in this press release that are not historical facts are "forward-looking statements." These forward-looking statements may be significantly impacted, either positively or negatively, by various factors, including without limitation, the Company's ability to satisfy its debt and environmental obligations, regulatory compliance with local state and federal governmental agencies, financing sources, potential and actual litigation, weather, permits, raw materials cost, competition and business conditions in the mining and recyclable industries. As a result, the forward-looking statements are subject to numerous risks and uncertainties that could cause actual results to differ materially from those expressed in or implied by the statements herein. For a discussion of such risks and uncertainties, see the risk factors set forth in the Company's Annual Report on Form 10-K for the most recently ended fiscal year.

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