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Los Angeles County Metropolitan Transportation Authority's (LACMTA) Gateway headquarters in downtown Los Angeles has received the U.S. Environmental Protection Agency’s Energy Star rating.

LACMTA earned the designation as part of a larger effort to attain a Leadership in Energy and Environmental Design (LEED) certification for the headquarters under the U.S. Green Building Council’s Existing Building Operations and Maintenance category (EBOM), LACMTA officials said in a prepared statement.

The Energy Star rating signifies that the building is in the top 25 percent of similar facilities nationwide for energy efficiency. Commercial buildings that earn the Energy Star use an average of 35 percent less energy than typical buildings and also release 35 percent less carbon dioxide, LACMTA said.

Through the LEED-EBOM effort, LACMTA completed energy efficiency assessments, installed sub-meters, performed retro-commissioning activities and identified other energy saving measures. The agency previously installed occupancy sensors, began to use timers on the building's lighting systems and optimized energy systems.