Tri Delta Transit
Tri Delta Transit , formally the Eastern Contra Costa Transit Authority , is a joint powers agency of the governments of Pittsburg , Antioch , Oakley , Brentwood , and Contra Costa County that provides bus service for the eastern area of Contra Costa County , California , United States . 
<triplet> Pittsburg <subj> Contra Costa County <obj> located in the administrative territorial entity <triplet> Antioch <subj> Contra Costa County <obj> located in the administrative territorial entity <triplet> Oakley <subj> Contra Costa County <obj> located in the administrative territorial entity <triplet> Brentwood <subj> Contra Costa County <obj> located in the administrative territorial entity <triplet> Contra Costa County <subj> California <obj> located in the administrative territorial entity <triplet> California <subj> Contra Costa County <obj> contains administrative territorial entity