The 2004 LAX airport CBA contains numerous environmental provisions. Now, the airport is spending more than $2 million on an air pollution study as part of its obligations under the CBA. It will be the most comprehensive airport pollution study to have been undertaken in the United States, and it will provide data to show which communities are bearing the brunt of the airport's environmental impacts.
For more information, see this article in today's L.A. Times, and also a press release issued by the airport. Also, check out the new Environmental Defense report, "Everybody Wins: Lessons from Negotiating Community Benefits Agreements in Los Angeles." Environmental Defense played a key role in the CBA negotiations.