Cal. Pub. Util. Code § 96002
The district may exercise the right of eminent domain to take any property necessary or convenient to the exercise of the powers granted in this part. The district, in exercising such power shall, in addition to the damage for the taking, injury, or destruction of property, also pay the cost of removal, reconstruction, or relocation of any structure, railways, mains, pipes, conduits, cables or poles of any public utility or public district which is required to be moved to a new location.
No action in eminent domain to acquire property within any incorporated city or any county shall be commenced unless the legislative body of the affected city or county has consented to such acquisition by resolution.
No such taking or acquisition by the district which would involve the abandonment, removal, relocation, or use of property of a railroad corporation, as defined in Section 230 of this code, shall be permitted, unless the Public Utilities Commission, after hearing, shall find and determine that the public interest and necessity require the abandonment, removal, relocation, or use of such property and that such taking or acquisition will not unreasonably impair the ability of the railroad corporation involved to provide safe, adequate, economical, and efficient service.
Ca. Pub. Util. Code § 96002