Doe Run Smelter Air Monitoring Reflects Attainment

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State Implementation Plan initiatives accomplish attainment goal in 3rd quarter

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But our ultimate goal is more far-reaching than to consistently be in attainment of the air quality standard. We want to continually improve those measurements day after day in every way we can as we simultaneously continue to invest in technologies that will reduce environmental impacts even more.

The Doe Run Company today announced that all nine of its air monitors near the company's Herculaneum, Mo., facility successfully attained the National Ambient Air Quality Standard (NAAQS) for lead during the third quarter of 2008.

In April, the company completed installation of the 60-plus engineering and administrative control measures outlined in the 2007 State Implementation Plan (SIP). This plan, developed through long-term strategic discussions between Doe Run representatives, the Missouri Department of Natural Resources, the U.S. Environmental Protection Agency (USEPA) and numerous specialty engineers and consultants, was designed to improve air quality and bring the area into consistent attainment with the NAAQS for lead.

"We believe the SIP projects were instrumental in helping us achieve attainment for the second consecutive quarter following implementation of the engineering and administrative controls," said Gary Hughes, general manager of the Herculaneum smelter. "But our ultimate goal is more far-reaching than to consistently be in attainment of the air quality standard. We want to continually improve those measurements day after day in every way we can as we simultaneously continue to invest in technologies that will reduce environmental impacts even more."

The USEPA's specified air quality standard for lead is 1.5 micrograms per cubic meter of air (averaged over a calendar quarter). According to data collected by Doe Run and reported quarterly, the company's nine ambient air-monitoring stations in Herculaneum ranged from 0.1 to 0.7 micrograms of lead per cubic meter of air. The Broad Street monitor, now inside the newly established property boundary fence line, is no longer located in ambient air and will now only be used for informational purposes as described in the 2007 SIP requirements.

The SIP is a process used throughout the United States to improve air quality and help achieve federal air standards -- in this case, for lead. Doe Run has made steady progress on design, engineering and construction of the measures called for in the SIP. The entire plan contained a number of diverse engineering and administrative control measures that took two years to complete at a cost of more than $8 million.

A related project included extending the smelter's property boundary to create additional space between the smelter and the neighboring community. The newly installed fence line was constructed in such a manner as to preclude public access while allowing an unfettered view of the green space. The landscaping plan included the planting of 100 trees to support Herculaneum's Tree City USA initiative.

About The Doe Run Company
Based in St. Louis, The Doe Run Company is a privately held natural resources company and the largest integrated lead producer in the Western Hemisphere. Dedicated to environmentally responsible mineral and metal production, Doe Run operates one of the world's largest, single-site lead recycling facilities, located in Boss, Mo. The Doe Run Company and its subsidiaries deliver products and services necessary to provide power, protection and convenience. Doe Run has operations in Missouri, Washington and Arizona. For more information, visit http://www.doerun.com.

Contact:
Kent Martin
314-453-7661
kmartin @ doerun.com
http://www.doerun.com

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