Melanie HolmerMelanie Holmer joined Walnut Creek, Calif.-based environmental engineering firm Brown and Caldwell as national water reuse leader. With 20 years of experience in the planning, design and construction of water supply and treatment facilities, Holmer’s expertise covers all aspects of drinking water, wastewater, stormwater and reuse. Prior to her new role, she was Stantec’s water reuse leader for California. Holmer will be based in Sacramento.

Chris MaslykRaul Rosales was promoted to executive vice president and general manager for Skanska’s Los Angeles building construction operations. Rosales has more than 30 years of industry experience, the last 12 with Skanska. He holds two bachelor’s degrees from Florida International University, one in architectural technology and another in construction management. Skanska also hired Chris Maslyk as scheduling director in Los Angeles. Maslyk brings more than 32 years of experience managing the planning, production and construction of domestic and international projects. His role includes developing CPM schedules, evaluating build sequences and assessing risk.

Capt. John Adametz was promoted to rear admiral and will be assigned as commander, Naval Facilities Engineering Command, Pacific, and director, Fleet Civil Engineer, U.S. Pacific Fleet in Pearl Harbor, Hawaii. Adametz currently serves as commanding officer, Naval Facilities Expeditionary Warfare Center, Port Hueneme, Calif.

Stephen EpsteinStephen Epstein has joined CO Architects of Los Angeles as chief financial officer. Epstein has more than 25 years of experience and leads the business and human resources operations for the practice. Before joining CO Architects, Epstein was a strategic adviser with Strogoff Consulting and a principal with Los Angeles-based Pfeiffer Partners, a successor to Hardy Holzman Pfeiffer Associates.

Ben TripousisBen Tripousis has joined HNTB Corp. as associate vice president and senior program manager, based in the firm’s San Jose, Calif., office. Tripousis has served as technical advisory committee chair at both the Metropolitan Transportation Commission Partnership and the Santa Clara Valley Transportation Authority. Before joining HNTB, Tripousis was Northern California regional director of the California High Speed Rail Authority. Helene Kornblatt also joined HNTB as senior environmental sciences and planning director and Southern California practice leader. She also is an associate vice president of the firm. She has 30 years of experience in transportation and public transit and is based in Los Angeles.

Marco EacrettMarco Eacrett has been promoted to partner in charge for PBK Architects’ California operations in Ontario, Calif. Eacrett has more than 25 years of experience and joined the PBK team in 2016. He holds a bachelor’s degree in architecture from California State Polytechnic University. PBK is an international architecture and engineering practice specializing in educational and sports facilities.

Gail Farber has joined Arup as a principal to lead the growth of the company’s infrastructure practice in Southern California. Previously, Farber was director of the Los Angeles County Dept. of Public Works. Farber also serves on Arup’s infrastructure executive leadership team for the Americas region.