Phoenix Awards GAC Contract to Calgon Carbon

Calgon Carbon Corporation announced Dec. 15 that it has been awarded a contract from the city of Phoenix, Ariz., to provide granular activated carbon (GAC) to two of its drinking water treatment plants to prevent the formation of disinfection byproducts in the city’s drinking water.

The value of the contract is $14.3 million and includes the initial fill of GAC for both plants, beginning in 2010.

Under terms of the contract, Calgon Carbon will supply GAC and provide related services for the upgrades of the Deer Valley and Val Vista Water Treatment plants, which together process approximately 195 million gallons of water per day.

These upgrades are part of the city's response to the U.S. Environmental Protection Agency's Stage 2 Disinfection Byproducts Rule (DBP Rule), which was promulgated in 2006. The DBP Rule establishes maximum levels at which disinfection byproducts are permitted to be present in drinking water. These byproducts are potentially harmful compounds that are formed when chlorine used to disinfect drinking water reacts with naturally occurring organic materials in the water. By removing the organic materials, activated carbon prevents disinfection byproducts from forming.

Calgon Carbon estimates that the DBP Rule could result in the installation of more than 600 new activated carbon systems in the United States.

Bob O'Brien, senior vice president of Calgon Carbon, said, "We are pleased that the city of Phoenix has chosen Calgon Carbon's products and services to support its progressive approach for drinking water treatment. We look forward to continuing to provide similar support to other communities in their efforts to comply with the Stage 2 Disinfection Byproducts Rule."

Calgon Carbon Corporation, headquartered in Pittsburgh, Pa., is a global leader in services and solutions for making water and air safer and cleaner.

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