Nicholas A. Colasanto climaxed a 12-year career on the Alexandria City Council last night by dominating much of a council meeting with motions on subjects close to his heart.

Colasanto, 74, defeated last March in the Democratic primary in a bid for an unprecedented fifth three-year term, introduced motions supporting volunteer firemen, volunteer police assistants and political friends with a woman who is a Canadian citizen.

Additionally, Colasanto surprised the council by withdrawing an offer he had made to give the city a dilapidated house he owns.

Pounding the table and often flushing with anger, Colasanto loudly voiced support of the City's volunteer firemen and police workers who have been among his strongest supporters. The rest of the council supported him.

Colasanto also introduced a motion requiring applicants for city positions to state whether they are citizens of the United States.

"If they won't say whether they are citizens, they should go back where they came from," he said. Again, he won council support.

Two friends of Colasanto in the Del Ray area are currently involved in a squabble with an Alexandria resident who is a Canadian citizen over appointment to a citizens' group.

Colasanto withdrew his offer to give his house at 311-313 E. Curtis Ave. to the city on behalf of "needy elderly" after a city report stated that it would cost nearly $100,000 to make the duplex building fit for human habitation. The structure was condemned last October by health officials, and is currently scheduled to be taken over by the city in the next two months if it is not improved.

Colasanto has said he will not improve the house and will fight efforts to take it from him.

In other action, the council reappointed School Board Vice Chairman Shirley N. Tyler and board member Claudia Waller. The council named James H. Harrison Jr., a retired Navy officer, to a board vacancy. Harrison will replace Wilfred Smith, who is retiring from the board.