RISK OF THE SCAVENGER’S EXPOSURE TO SO2 AND NO2 AT THE FINAL WASTE DISPOSAL SITE (TPA)OF TAMANGAPA OF MANGGALA DISTRICT OF MAKASSAR CITY Wahyu Fajriana Hipta Prosiding Fakultas Kesehatan Masyarakat Universitas Halu Oleo Vol. 1 No. 1 2018