The current councilors are Aldo Polanco Contreras , Andrea Aranda Escudero , Viviana Parraguez Ulloa , Juan Cornejo Vargas and Marta UrzÃ a PÃ a . The current councillors of Pichilemu are Aldo Polanco Contreras , Andrea Aranda Escudero , Viviana Parraguez Ulloa , Patricio Morales Acevedo , Juan Cornejo Vargas , and Marta UrzÃ a PÃ a .