(a) Notwithstanding Section 20221, work on the Oakland Wye complex to the MacArthur Station project and on the Daly City turnback and storage facilities project may be performed by district personnel during periods of operation of the transit system when interconnection work is to be performed within 12 feet of the centerline of the existing track.
(b) Notwithstanding Section 20221, interconnection work required for the Dublin-Pleasanton Extension, Warm Springs Extension, Pittsburg-Antioch Extension, Colma-San Francisco Airport Extensions, and work required by Department of Transportation retrofit or replacement projects may be performed by district personnel when the work is to be performed within 12 feet of the centerline of existing track or where the tie-in or startup of the work could affect operating train control, traction power, electrical control, or communications systems and the district has determined that there is a clear risk to safety of personnel or to passenger service which requires that district personnel perform the work.
(c) Notwithstanding subdivisions (a) and (b), it shall continue to be the policy of the district to perform all interconnection work by competitive bidding.