SECTION 1. Section one of Republic Act Numbered Thirty-eight hundred seventeen is hereby amended to read as follows:
"SECTION 1. Barrios Magragondong, Basicao, Palapas, Miligan, Panganiran, Flores, Cuyaoyao, Agul, Binodogahan and Caratagan are separated from the Municipality of Ligao; Barrios Malacbalac, Malidong, Basicao, Malapay Nablang-bulod, Buyo, Rawis, Mamlad, Oringon, Cagbatano, Macasitas, Sukip and Tibabo are separated from the Municipality of Guinobatan; and Barrio Buenavista is separated from the Municipality of Jovellar, all in the Province of Albay, and constituted into a separate and independent municipality in the said province, to be known a& the Municipality of Pioduran, with the seat of government in the present barrio of Malacbalac.
"The boundary line between the municipalities of Ligao and Pioduran shall be the Palapas River."