CA Health & Safety Code Section 41210

(a)

There is hereby created the Mojave Desert Air Quality Management District.

(b)

The boundaries of the Mojave Desert district shall include all of the County of San Bernardino and the County of Riverside that is not included within the boundaries of the south coast district, and any other area included pursuant to subdivision (c).

(c)

The Mojave Desert district board may, by resolution, include in the Mojave Desert district any other area upon receipt of a resolution from the district that currently includes the area requesting inclusion and specifying the area to be included. All territory included within the Mojave Desert district shall be contiguous.