Cal. Gov. Code § 6502.5
In addition to any power common to its member districts, the Resource Conservation Energy Joint Powers Agency has the authority to finance, construct, install, and operate projects for the production of biogas and electricity from the digestion or fermentation of animal or agricultural waste. The agency may undertake these projects within its jurisdiction or outside its jurisdiction. The authority to undertake projects outside the jurisdiction of the agency is limited to the geographical areas of Fresno, Kings, Madera, Merced, San Joaquin, and Tulare Counties.
Prior to undertaking a project authorized by this section outside the jurisdiction of the agency, the agency shall obtain approval of the board of supervisors of the county in which the project is to be located.
Ca. Gov. Code § 6502.5