You are far better off in Simpson Bay than you are at Divi. Divi is close to town where the dump is located. Simpson Bay is at least over the hill and the hill itself does block most of the fumes. Better still, Maho and the Cupecoy areas are even further away. Your other option is Oyster Pond since the prevailing winds are from the east and Oyster Pond will be upwind from the dump fires.