2005 California Government Code Sections 55050-55057 Article 3. Contracts

55050. All contracts for the construction or completion of, or for
furnishing labor or materials for, any conduits to be constructed by
a local agency in another local agency shall be let to the lowest
responsible bidder.
55051.  The legislative body of the local agency constructing the
conduits under permission shall advertise inviting sealed proposals
for furnishing the labor and materials for the proposed work before
any contract is let.
55052.  The advertisement shall be published for at least ten days
in one or more newspapers published in the local agency.  If there is
no such newspaper it shall be published in one or more newspapers
published in the county in which the local agency is situated.
55053.  The legislative body shall require such bonds as it deems
best from the successful bidder to insure the faithful performance of
the contract.
55054.  The legislative body may reject any and all bids.
55055.  This chapter does not prohibit the local agency itself from
constructing or completing the works and employing the necessary
labor without advertisement for proposals or letting of a contract.
55056.  In any city operating under a charter providing for a board
of public works, all things required in this article to be performed
by its legislative body shall be performed by the board.
55057.  If the charter or general law under which local agency is
operating prescribes the manner of letting and entering into
contracts of the kind provided for by this chapter, such contracts
shall be let and entered pursuant to the charter or general law.