ued by agency head to contractor, thus clarifying section; P.A. 80-483 replaced Hartford county with judicial district of Hartford-New Britain; P.A. 85-113 added reference to construction management; P.A. 86-253 amended Subsec. (a) to extend applicability to any highway, bridge, building or other public works of any political subdivision of the state and added Subsec. (b) providing for arbit