Paul Kalous of Duxbury, a project director at RF Walsh Collaborative Partners, has been accredited as a Leadership in Energy and Environmental Design (LEED) Green Associate (GA).

The LEED accreditation program provided by the U.S. Green Building Council (USGBC) is a three-tiered exam, the first of which provides the test-taker with a green associate certification.

"We are proud to announce that Paul is now a LEED Green Associate," said Jack Hobbs, president and CEO of RF Walsh Collaborative Partners. "RF Walsh Collaborative Partners is committed to leading the industry in creating sustainable, energy efficient buildings and Paul’s hard work and recent certification is an integral part of our mission."

Kalous was project manager on the Delta Airlines Boston Logan Terminal A redevelopment project that was the first airline terminal in the world to earn LEED certification, according to a statement.