Cal. WAT § 12878.1

(a) If the department determines that a unit of a project is not being operated or maintained in accordance with the standards established by federal regulations, if the department determines that the modification of a unit of a project that has been permitted by the board and that provides flood protection is not being operated or maintained in accordance with the requirements established by the board or the department, or if the governing body of a local agency obligated to operate and maintain that unit by resolution duly adopted and filed with the department declares that it no longer desires to operate and maintain the project unit, the department shall prepare a statement to that effect specifying in detail the particular items of work necessary to be done in order to comply with the standards of the federal government and the requirements of the board or the department together with an estimate of the cost thereof for the current fiscal year and for the immediately ensuing fiscal year.

(b) Subject to subdivision (c), but notwithstanding any other provision of law, the board or the department is not required to proceed in accordance with subdivision (a) or with the formation of a maintenance area under this chapter if neither the board nor the department has given the nonfederal assurances to the United States required for the project. If neither the board nor the department has given the nonfederal assurances to the United States required for the project, the board or department may elect to proceed with the formation if it determines that the formation of a maintenance area is in the best interest of the state.

(c) If a local agency requests the department to form a maintenance area by resolution duly adopted and filed with the department, the department shall estimate the cost of preparing the statement of necessary work and the cost thereof, and all other applicable costs incurred by the department before the formation of the maintenance area. The department shall submit that estimate to the local agency. The department is not required to perform any additional work to form that maintenance area until the local agency pays the department the amount estimated pursuant to this subdivision.