Bidding Delayed• \YASP INGTON^(AP) 3 The federal'''Bureau of ‘‘Reclamation announced Sunday that the bid opening for construction of the Teton dam project in Walio has been postponed from Sept. 9 to Od, 1, • : -V.'The bureau said tlie postpone ment resulted for specification . .-changes for the dam and power and pumping plant which vill be the principal. facilities in the first phase of the Teton Basins Project's Lower Teton division in Eastern Idaho,The projsst was authorized by Congress in 1964* A pending ap* propr iationbill contains $10?B55,» 000 for construction work on the project this fiscal year.