... 15,515 20 ,710 Area 151 393 441 6 21 175 1,186 Total 28 1 396 3,544 6 1,978 15,691 21 ,895 HAPs Point 3,538 2 0 0 65 25 6 3,861 Area 1 ,27 9 22 4 529 15 4, 828 29 ,4 12 36 ,28 8 Total 4,817 22 6 529 ... Rocky Mountain oil and gas province. Environmental characteristics are discussed further in section 2. 2 .2 and 2. 2.33. In addition, some definitions of the Rocky Mountain region also include northwestern ... water quality standards. The confederated Salish and Kootenai Tribes of the Flathead Reservation in Montana and the Assiniboine and Sioux Tribes of the Fort Peck Indian Reservation in Montana...