Donald E. Stone Jr. has joined Dewberry, a Fairfax, Va., engineer-architect, as chief operating officer. In this role, he replaces Ronald L. Ewing, who became CEO of the firm in 2005. Stone had been COO at engineering firm O’Brien & Gere Ltd. and president of its Total Water Solutions division. In that position, he spearheaded creation of a special-purpose entity to finance the firm’s design-build-own-operate water and wastewater projects. PSA-Dewberry, the firm’s building services affiliate, also named Mike Tatalovich practice segment leader for federal architecture. He had been director of business pursuits for the government and infrastructure division of KBR, Houston.
Bechtel Group Inc. has named David Welch principal corporate vice president and president of its Europe, Africa, Middle East and Southwest Asia region in the London-based civil business unit. He had been assistant secretary of State for Near Eastern affairs since 2005 and U.S. ambassador to Egypt from 2001 to 2005. He also holds the rank of career ambassador, the highest in the U.S. Foreign Service.