Dewberry, a privately held professional services firm, has promoted Dan H. Williams to associate vice president in the Gainesville, Virginia, office. Williams has extensive design experience and proven leadership in the mid-Atlantic region with complex projects of many scales, and has particular expertise collaborating and managing consultant teams on behalf of the client. His focus is on site/civil engineering and related services primarily within the land development and energy infrastructure market segments. Williams’ portfolio includes the planning, design, and implementation of development programs for institutional, commercial/mixed-use, industrial, and residential clients as well as managing services on linear power utility infrastructure projects. He also has experience conducting special studies, including site analysis and feasibility, along with preliminary engineering and land planning studies. Public road, water and sewer infrastructure have been key components in many of these projects. Williams earned his bachelor’s degree in environmental resource management from Allegheny College and a master’s degree in land use planning from the University of Virginia. He is a member of the Northern Virginia Building Industry Association and other industry and community groups in the region.

Gary Simpson, PLS, has been promoted to senior associate in the Lanham, Maryland, office. He is the Maryland operations survey manager, as well as the director of survey technology for the company. With more than 32 years of extensive experience in all aspects of surveying, Simpson has worked on surveying projects of all sizes, from city lots to several-thousand-acre undertakings. His experience includes management of the survey department, field crews, and client management, as well as survey computation, GPS, 3-D scanning, business development, and records research. He has developed ground control quality assurance methods that include checkpoint surveys designed to test the accuracy of LiDAR and photogrammetrically compiled products. Simpson has associate degrees in forest management and land surveying from Glenville State College. He is a member of the International Right of Way Association, the Maryland Society of Surveyors, the District of Columbia Association of Land Surveyors, the West Virginia Society of Professional Surveyors, the Virginia Association of Surveyors, and the Surveying Historical Society.