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June 23, 2010
Brown and Caldwell hired Bill Mobley as a principal civil designer, Tiffany Knapp as a senior engineer in its infrastructure group, Gina Costanzo as a principal CAD designer and Kristen Perrin as a receptionist. Tadd Giesbrecht has rejoined the firm as a principal engineer in the wastewater group. Mobley has more than 30 years of experience with geotechnical, transportation, site, roadway, utility and survey design, including with AutoCAD Civil 3D. Knapp has 10 years of experience and specializes in wastewater collection master plans, treatment and disposal master plans, strategic planning, and design. Costanzo has 21 years of experience in piping and structural design, and will support the wastewater group with 3D mechanical design. Perrin is a graduate of WSU. Giesbrecht has 12 years of experience in wastewater and reclaimed water systems, water and wastewater treatment plant design, and conveyance system design. Brown and Caldwell is an environmental engineering firm specializing in wastewater and water treatment, water reclamation, conveyance, water resources management, and asset management.