News | September 29, 2003

Washington State Regional Authority Implements Water Reclamation Program That Will Save Millions Of Gallons Of Water Each Year Technology is Cornerstone of Reclamation Project

OLYMPIA, Wash. – The LOTT Wastewater Alliance, named for the cities it serves Lacey, Olympia, Tumwater, and Thurston in Washington State, has selected the USFilter MemJet™ Immersed Membrane Bioreactor System for its Hawks Prairie Reclaimed Water Satellite Treatment Plant. The Hawks Prairie satellite plant will be the first of three planned reclaimed water satellites that are part of LOTT's 20-year Wastewater Resource Management Plan.

The Hawks Prairie location was chosen first because it offers several potential users of the reclaimed water for irrigation, commercial and industrial purposes, which is one of the management plan's goals--supply reclaimed wastewater where it is needed and reduce the load on the central regional plant. The location is also suitable for groundwater recharge basins where the water will filter through the ground to replenish groundwater supplies. As part of the plan, each satellite plant will intercept existing regional sewer lines and extract municipal wastewater for local use.

By meeting Washington State "Class A" reclaimed water standards, the LOTT communities will save hundreds of millions of gallons of drinking quality water each year. The "Class A" water has nearly unrestricted uses, including public contact, but is not considered suitable for human consumption.

According to LOTT Engineering Manager Brian Topolski, P.E., "The production and beneficial use of Class A water will allow LOTT to return a valuable product to the community. We are working hard to ensure the Hawks Prairie Satellite will be a model system for reclaimed water treatment, distribution and use."

USFilter's immersed microfiltration system will provide liquid solids separation on a molecular scale, supplying high quality reuse water. The MemJet™ system is also uniquely designed to ensure stable long-term performance.

The "Class A" water from the Hawks Prairie facility will be piped about three miles to a series of constructed wetlands storage ponds. From the pipeline and the ponds, water will be drawn out for irrigation, and a variety of commercial or industrial processes. Water not distributed for direct use will circulate to the groundwater recharge infiltration basin.

The treatment plant will be constructed to blend into the surrounding commercial neighborhood and will be monitored and operated remotely through an extensive SCADA controls system. The pond and recharge basin site will provide an attractive park-like setting in its commercial and light industrial neighborhood.

Construction is expected to begin in the Spring of 2004.

About LOTT
The LOTT Wastewater Alliance, which serves 78,000 people, helps preserve and protect public health, the environment, and water resources by providing wastewater management services for the urban area of north Thurston County, Washington.

About USFilter
United States Filter Corporation, a Veolia Environnement company, is North America's leading water company providing comprehensive water and wastewater systems and services to commercial, industrial, municipal and residential customers. Veolia Environnement (Paris Bourse: VIE and NYSE:VE) is the largest environmental services company in the world with more than 295,000 employees, including FCC, in about 100 countries and annual revenues of more than $31.5 billion. Visit the company's web sites at www.usfilter.com or www.veoliaenvironnement.com.

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