The buildings located at both 30 and 35 Corporate Drive in Burlington recently achieved LEED certification.

The certification is awarded to existing buildings for maximizing operational efficiency and minimizing environmental impacts, according to a statement.

Both Burlington buildings have "demonstrated tremendous environmental stewardship through LEED EB: O&M certification," said U.S. Green Building Council president, CEO and founding chair Rick Fedrizzi. They are "leading example(s) of the importance of greening the existing building stock, which is among the most environmentally responsible actions we can take."