(a) In cases of emergency when repair or replacements are necessary, the governing body may proceed at once to replace or repair any public facility without adopting plans, specifications, strain sheets, or working details, or giving notice for bids to let contracts. The work may be done by day labor under the direction of the governing body, by contractor, or by a combination of the two.
(b) In case of an emergency, if notice for bids to let contracts will not be given, the public agency shall comply with Chapter 2.5 (commencing with Section 22050).