Section 40230 Of Article 3. Governing Body From California Health And Safety Code >> Division 26. >> Part 3. >> Chapter 4. >> Article 3.

. The bay district board may establish, within the bay district, zones wherein special regulations are warranted. In establishing such zones, the bay district board shall consider the degree of concentration of population, the number, nature, and dispersal of the stationary sources of air pollution, whether the area is a rural agricultural area, and the presence or absence of industry.