Cal. SHC § 5103

Whenever the work or improvement includes the installation of works or appliances for supplying electric, telephone, or cable television service, sanitary sewers or instrumentalities of sanitation, domestic or industrial water supplies, or mains and appurtenances for supplying or distributing a domestic or industrial gas supply, and the territory in which the work or improvement is contemplated is within the service area of a public utility, public agency, or mutual water company supplying the service, the legislative body may, before the adoption of the resolution of intention, enter into an agreement with the public utility, public agency, or mutual water company which may, among other things, provide for all of the following:

(a) The supplying or approval by the public utility, public agency, or mutual water company of plans and specifications for the work or improvement.

(b) The performance of work or service, for an allowance or contribution by the public utility, public agency, or mutual water company toward the cost of the work or service where provided for by its rules or regulations, and for the payment for the work or service.

(c) That the agreement shall become effective upon the effective date of the resolution or ordinance ordering the work in proceedings taken pursuant to this division.

(d) That, after the confirmation of the assessment, the public utility, public agency, or mutual water company shall have exclusive possession, control, and use of the work or improvement as long as the public utility, public agency, or mutual water company uses the work or improvement to render to the lands within the assessment district the services intended to be furnished by the work or improvement.