Officials Confirm Doe Run Peru River Discharges Within Permissible Ranges

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$46.5 million investment in water treatment plants allows significant progress.

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Our investment of $39 million in the industrial wastewater treatment plant and $7.5 million in three potable water treatment facilities has controlled the negative impacts on water quality in the Yauli and Mantaro rivers

Analysis of environmental monitoring in the Andean community of La Oroya has confirmed that there are no measurable impacts on the water quality of the area's Mantaro and Yauli rivers by the operations of Doe Run Peru's metallurgical facility, the company reported Tuesday.    

Liquid discharges from Doe Run Peru's operations and from the homes of its employees are processed in wastewater treatment plants that were completed, on time, under the company's environmental operating agreement with the state. The agreement is known by its Spanish acronym, PAMA.

Since the last of the four plants began operating within the last two years, effluents are now within the Peruvian government's permissible limits as has been confirmed by state health officials and by auditors designated by OSINGERMIN, an independent Peruvian regulatory agency. Those limits were developed for discharged water that is acceptable for agricultural use.

"Our investment of $39 million in the industrial wastewater treatment plant and $7.5 million in three potable water treatment facilities has controlled the negative impacts on water quality in the Yauli and Mantaro rivers," said Jose Mogrovejo, Doe Run Peru's vice president for environmental affairs.

In 1997, when Doe Run Peru arrived in La Oroya, the 80-year-old metallurgical complex discharged some 44.6 cubic meters of contaminated water into the Mantaro every minute. Due to a series of operational improvements, the volume of the discharge has been reduced to just five cubic meters per minute, a reduction of more than 88 percent. Now, with the industrial water treatment facility in operation, only treated water is released into the river.

An additional indicator of the magnitude of the progress is the radical decrease in metal content of the effluents. For example, lead discharges have been reduced 77 percent, zinc by 98 percent and copper by 84 percent. Emissions of arsenic are down 75 percent and the reduction in iron emissions has reached 98 percent.

Mogrovejo stressed that while the progress Doe Run Peru has achieved is significant, the definitive cleanup of the orphaned historic mining discharges and the ongoing sewage discharges to the Mantaro River will require the involvement and action of many others, including the local, regional and federal governments, as well as other companies and civil society.

About Doe Run Peru
Doe Run Peru is a mining and metals company operating in Peru's central Andes. The company has run the La Oroya metallurgical complex since 1997 and the Cobriza mine in Huancavelica since 1998, producing high quality refined metals while at the same time working to operate in a socially and environmentally responsible way.

For more information visit: http://www.doerun.com.pe.

Contact:
Victor Andres Belaunde
Telf.+ (511)215-1200 ext. 1285
vbelaunde @ pe.doerun.com

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Victor Andres Belaunde
Doe Run Peru
511-215-1200 +1285
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