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Carollo Engineers Names New Principal, Associate in its Phoenix Office.

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Carollo Engineers announced the naming of a new principal and a new associate in the water/wastewater engineering and construction management company's Phoenix office.

C.B. Hagar is Carollo's newest principal, joining the 32 other principals in the 67-year-old company. David A. Siebert is a new associate in the company that includes 426 engineering and construction management professionals and support staff located in 17 offices throughout the United States. Carollo's Phoenix office includes approximately 106 employees.

Hagar joined Carollo in 1998 and has 29 years of experience in the planning, design and construction of water and wastewater treatment plants and distribution systems. He has completed more than 50 water treatment plant projects, many in and around the Phoenix area.

He has extensive knowledge in advanced water treatment alternatives, including membrane filtration, ultraviolet disinfection, granular activated carbon and ozone processes.

His wastewater treatment experience includes numerous successful projects throughout Arizona and the Phoenix area. He was the project manager for the town of Gilbert's wastewater master plan and the planning of a 4 million gallons per day (mgd) water reclamation plant for the towns of Mesa and Gilbert, Ariz.

Hagar has been instrumental recently in the establishment of Carollo's newest office in Austin, Texas, where he was project manager on a pilot plant study for Austin's Ullrich Water Treatment Plant.

He has also performed work for the city of Corpus Christi, Texas, including a study to determine the cost of the on-site generation of chlorine or sodium hypochlorite to treat water versus the current costs involved with the delivery and use of liquid chlorine at the city's water treatment plant.

Hagar, a registered professional engineer in Arizona, Kansas, New Mexico and Michigan, holds a master's degree in civil engineering from North Carolina State University and a bachelor's degree in civil engineering from the University of Kansas. He is a member of the American Academy of Environmental Engineers and was past president of the Missouri Water Pollution Control Association.

He is also the author of 11 technical papers and was the project manager in charge of writing the &uot;State of the Art of Small Water Treatment Systems&uot; for the U.S. Environmental Protection Agency.

Siebert joined Carollo in 1986 and has more than 13 years of professional experience. He specializes in the civil engineering, design and construction management of water treatment facilities and major water systems, including project site development, roadways and flood control structures and drainage.

His project experience includes the design of the solids handling facility and the 80-mgd expansion at the cities of Phoenix and Mesa's Val Vista Water Treatment Plant.

He was also the project engineer for the preliminary treatment facilities for Phoenix's Squaw Peak Water Treatment Plant as well as the lead civil engineer for plant improvement projects for the Southern Nevada Water Authority's Alfred Merritt Smith Water Treatment Plant.

A registered professional engineer in Arizona, Siebert has a bachelor's degree in civil engineering from Arizona State University and has completed additional studies in urban and highway drainage system design. He is a member of the American Society of Civil Engineers.

Carollo Engineers is a leading expert in the planning, design and construction management of water and wastewater projects for public agencies, municipalities and private industrial firms throughout the United States.
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Publication:Business Wire
Date:Jan 21, 2000
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