South Coast Air Quality Management District

<p>The South Coast Air Quality Management District manages air-pollution regulations and policy for all of Orange County and urban portions of Los Angeles, Riverside and San Bernardino counties. The AQMD shares a building with Diamond Bar City Hall and has an auditorium that provides public-meeting space.</p> <p>In 2004, the AQMD facilities became the state's first to have a fueling station for hydrogen cars. A solar array adjacent to the building provides electricity for a number of electric vehicles in the AQMD fleet.</p>