Nibbi Brothers General Contractors has appointed Greg Narvick to chief operating officer. He most recently served as vice president of operations. Narvick will streamline collaboration between the preconstruction and operations departments.  Nibbi also promoted Jeff Hartman to vice president of self-perform services, which includes Nibbi Concrete and Nibbi SPS.

Brian Weinstein joined Stantec as senior principal and leader of the firm’s defense ports and maritime practice. Weinstein, based in Honolulu, oversees major federal and commercial projects across Asia Pacific and North America. Adam Maleitzke, based in Los Angeles, also joined Stantec as an urban design and planning lead, responsible for Stantec’s Urban Place, an interdisciplinary team of urban planning, design, mobility and resilience experts.

Environmental Science Associates has hired Tim Sturtz as its principal air quality specialist. With more than 14 years’ experience, he will provide expertise in air quality assessment and management, including greenhouse gas analyses and odor assessments. His former clients include the Port of Seattle and the Texas Commission on Environmental Quality. He has led air quality and greenhouse gas analyses for projects requiring SEPA review, including a methanol production facility, the modernization of a container terminal and a convention center renovation.

HNTB has hired Rich Coffin, based in San Francisco, as transportation project director and vice president. He will focus on Northern California urban transportation and livability issues. Coffin has led projects for more than three decades, including the Salesforce Transit Center, California High-Speed Rail, Bay Bridge West Span Bicycle/Pedestrian Path and the Bay Area Core Capacity Transit Study.

Keith Malloy has joined Ware Malcomb’s civil engineering team as a project manager in Los Angeles. His 12 years of experience include a variety of land development projects, retail, mixed-use, multifamily, health care and senior living facilities.

ATI Restoration has appointed Randall Bal, based in Sacramento, Calif., as vice president of business development. Bal has more than 15 years of sales and technical experience in designing go-to-market strategies. In his new role at ATI, Bal will focus on new market expansion. He previously worked as senior manager of go-to-market and operations for Cisco Systems Inc.

The Associated General Contractors of California has hired Manny S. Leon as vice president of government affairs. Leon previously served as principal consultant to the California State Senate Committee on Transportation for more than five years, working on legislation issues with the Dept. of Motor Vehicles, Caltrans, the High-Speed Rail Authority, regional planning, transportation finance and project delivery.

Suffolk has hired Ken Summers as general manager for the firm’s Los Angeles area, where he will drive regional business planning and development, market analysis and talent recruitment. Previously, Summers served in operations and preconstruction roles for Webcor Builders, where he was responsible for work in Los Angeles and San Diego. 

Ryan Cos. US has hired Kate Suski, based in Seattle, to lead development with a focus on multifamily, third-party-owned development and construction projects. Before joining Ryan, Suski was senior project manager at Barrientos.

The Orange County Water District board of directors has elected Stephen R. Sheldon to serve as the district’s board president and Cathy Green and Tri Ta to serve as first and second vice presidents, respectively. The board manages the Orange County Groundwater Basin, which provides 77% of the water to 2.5 million people in north and central Orange County.

The California Public Utilities Commission has appointed Rachel Peterson, an attorney and former nonprofit director, as its executive director. Peterson has worked at the CPUC since 2011 in several leadership positions, with experience in utility regulation, including electricity, natural gas, safety and transportation.

Affiliated Engineers Inc. announced that Marko Becir will serve as principal, managing director of the Los Angeles office. With AEI since 2015, Becir came to the U.S. after graduating from the University of Belgrade School of Mechanical Engineering with a degree in thermal engineering. His experience includes projects in science and technology, health care and higher education markets.

Christa Redd, based in Rancho Cordova, Calif., has been named Dewberry’s environmental service lead for Northern California. She has more than 22 years’ experience in public- and private-sector projects in transportation, residential, commercial, industrial, institutional and solar/wind. She is a member of the California Association of Environmental Professionals and WTS. Dewberry also named Rob Shackelford as the firm’s construction management service lead for Northern California. With 30 years’ experience, he has worked on transportation and public works projects valued at more than $750 million.