City Council to award water plant contract - East Valley Tribune: East Valley Local News

City Council to award water plant contract

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Posted: Monday, February 19, 2007 3:39 am | Updated: 6:52 pm, Fri Oct 7, 2011.

Scottsdale is expected to award a $9.3 million construction contract Tuesday as part of a larger, $70-million plan to upgrade its water treatment system.

The City Council will vote on whether to hire Archer Western Contractors to install a chemical storage and delivery system to treat water at the Scottsdale Central Arizona Project Water Treatment Plant, 8660 E. Union Hills Drive.

The treatment plant provides drinking water to the city north of Indian Bend Road.

Construction could start as early as next month and last more than a year, said Bill Peifer, senior project manager.

Installation of the chemical treatment facilities would be the second phase of a four-phase, $70-million upgrade to the plant.

The first phase called for a $15-million construction contract with Archer Western Contractors to build a new 6.5-million gallon reservoir for drinking water at the plant, bringing the total drinking water storage capacity to 16.5 million gallons. The City Council approved that contract in December.

Officials have said the extra storage is needed to handle water consumption at peak times of the day.

The plant treats Scottsdale’s allocation of Colorado River water to drinking standards.

Now, it treats about 50 million gallons daily. But based on north Scottsdale commercial and residential growth rates, the plant will need to treat an additional 30 million gallons per day by 2008.

Phase three, to be contracted in summer of 2007, calls for adding a membrane used in treating the water.

Finally, by 2009, the city plans to upgrade a pumping station at Frank Lloyd Wright Boulevard and Hayden Road that pumps untreated water to the treatment plant.


What: Scottsdale City Council

When: 5 p.m. Tuesday

Where: City Hall Kiva, 3939 N. Drinkwater Blvd.

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