The boundary of San Pedro and Biñan is wrong at the section just east of J.P. De Leon Ocampo Ave. & Camino Real St. up to the section just west of 4th Street & Macaria Drive. The boundary should continue to run along J.P. De Leon Ocampo Avenue in between the property lines of houses adjacent to the aforementioned street and Davao Street. From then on it should follow the property line until it meets the river/creek which would form it's natural boundary which at this point on should be already accurate.