This 3-sentence summary provides the key details about the 3-in-1 cleaning project: The document outlines a cleaning project organized by Matthea Graziela A. De Leon on October 27, 2012 in San Dionisio, Parañaque City. The project aims to clean trash from the streets and canals to lessen flooding during rains by dividing a group of at least 10 volunteers into two teams - one to clean canals and the other to collect trash and recyclables. The overall goal is to reduce trash and avoid floods during natural calamities.