California Code, Health and Safety Code - HSC § 40482

The south coast district board may delegate duties to the executive officer as it deems appropriate. The executive officer shall perform and discharge, under the direction and control of the south coast district board, the powers, duties, purposes, functions, and jurisdiction vested in the south coast district board and delegated pursuant to this section.

Any power, duty, purpose, function, or jurisdiction which the south coast district board may lawfully delegate is conclusively presumed to have been delegated to the executive officer unless it is shown that the south coast district board, by affirmative vote recorded in its minutes, specifically has reserved the particular power, duty, purpose, function, or jurisdiction for its own action.