Since its inception, Hacienda has been a leader in the movement to lower vehicle emissions by getting people out of their cars and into alternative forms of transportation. In 1985, Hacienda implemented a robust transportation demand management program to support commuters who use alternative transportation. Initially part of the nation's first transportation demand ordinance, this program has received national recognition from organizations that include the U.S. Environmental Protection Agency and the American Lung Association. Hacienda is also an active participant in the Bay Area Air Quality Management District's Tri-Valley Air Quality Resource Team, which uses innovative public-private partnerships to implement air quality projects.

Hacienda continues to integrate and enhance opportunities for alternative transportation which in turn continues to improve local air quality. When it was built, Hacienda was required to monitor a number of environmental parameters, including air quality. Air quality monitoring was established to provide baseline data for the park on parameters that include standard meteorological data, carbon monoxide monitoring, and particulate sampling. Periodic schedules, coincident with Environmental Protection Agency monitoring schedules, were established to monitor each parameter. The data was compiled and recorded quarterly. This data indicated local air quality conditions, which were measured against the established baseline, and federal, state and local requirements.

In 1997, routine water and air monitoring activities were concluded after satisfactory evidence was presented to the City of Pleasanton that full time monitoring efforts were not required. Future air monitoring activities will be implemented based on need.