Doe Run Achieves National Ambient Air Quality Standard For Second Quarter

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The Doe Run Company today announced its Herculaneum, Mo., facility met the National Ambient Air Quality Standard (NAAQS) for lead during the second quarter of 2008.

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We're very pleased to see that, during the first quarter following implementation of all the SIP controls, the plant met the air quality standard at all monitors

The Doe Run Company today announced its Herculaneum, Mo., facility met the National Ambient Air Quality Standard (NAAQS) for lead during the second quarter of 2008.

According to data collected by Doe Run and reported quarterly, the company's 10 air monitoring stations in Herculaneum ranged from 0.2 to 1.2 micrograms of lead per cubic meter of air, placing the smelter within the Environmental Protection Agency's air quality standard of 1.5 micrograms of lead per cubic meter of air (averaged over a calendar quarter). Broad Street and City Hall, the two monitors closest to the facility, registered 1.2 and 1.0 for the quarter, respectively.

"We're very pleased to see that, during the first quarter following implementation of all the SIP controls, the plant met the air quality standard at all monitors," said Gary Hughes, general manager of the Herculaneum Smelting Division. "By the end of July, we will be finishing the new fence line as part of the overall process to achieve consistent attainment in Herculaneum."

In April, Doe Run successfully completed the 60-plus engineering and administrative control measures outlined in the 2007 State Implementation Plan (SIP), which was designed to improve air quality and bring the area into consistent attainment with the NAAQS for lead. The company invested a total of approximately $8 million in SIP projects, including building enclosures, stack extensions and a sprinkling system. All were finished on schedule.

The plant's extended fence line will create additional space between the smelter and the neighboring community. The design of the fence will allow an unobstructed view of the newly created green area.

About Doe Run:
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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Kent Martin
Doe Run
314-453-7661
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