Steven J. Tambini, vice president of utility Pennsylvania American Water, is named executive director of the Delaware River Basin Commission, an interstate-federal water resource management agency, as of Aug. 1. He will succeed Carol R. Collier, now a

senior adviser to the Academy of Natural Sciences in Philadelphia. Commission chief administrative officer Richard C. Gore is interim head. Tambini is a board director of the Water Resources Association of the Delaware River Basin and of the National Association of Water Cos., Pennsylvania section. He is a former director of the American Water Works Association, New Jersey section, and chaired its panel on water policy issues. Commission jurisdiction is a 13,539-sq-mile area of Delaware, Pennsylvania, New Jersey and New York.

Batson-Cook Construction, Atlanta, has elevated David Barksdale to chief operating officer. He was senior vice president and general manager there. Kevin Appleton, Curt Rigney and Dave Schoendorf now are senior vice presidents.

Contractor T.A. Loving, Goldsboro, N.C., has named Michael Richter president. He was the building division’s senior vice president. David Philyaw, former division vice president, succeeds him.

Bart Schubert has joined San Diego-based design firm Kleinfelder in a newly created executive role as chief marketing officer, responsible for worldwide marketing and sales. He was vice president of corporate development at Black & Veatch.

Developer-contractor Lend Lease has elevated Kurt Lorenz to general manager of the multi-site group in its New York City-based Americas region , which delivers projects across North America and Latin America. He was senior vice president.  

Karina Enrico-Jackson has joined engineer JMT, Sparks, Md., as vice president. The role follows its March 24 purchase of GBF Engineering Inc., of which she was president. Enrico-Jackson is based in Fort Lauderdale, Fla. The deal adds 41 employees to JMT, which ranks at No. 100 on ENR’s list of the Top 500 Design Firms. M&A consultant Morrissey-Goodale says the southeast continues to be active, noting nine A-E sector acquisitions in the first quarter of 2014.

STV has named Joel Oppenheimer and Christopher D. Antoni senior vice presidents. Based in Baltimore, Oppenheimer heads the infrastructure practice in Maryland, and Antoni, based in Douglassville, Pa., is chief engineer and operations manager of STV’s energy services division