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. . TABLE 1.2 REGION XII STREAM SEGMENT CLASSIFICATIONS Most streams in Region XII are "effluent limited" meaning that flows are adequate to meet water quality standards when national wastewater treatment standards are applied. Other streams require special consideration and advanced wastewater treatment for particular pollutants. Th.o.se streams are listed below. . o " o w . Water Quality Limited Segments . Blue River and tributaries Gore Creek and Eagle River Fraser River Roaring Fork and Brush Creek . . Yampa River Parameter Phosphorus Ammonia Ammonia Ammonia BOD Chlorine Ammonia Uses of the following stream segments would be threatened if only secondary treatment were applied. . Threatened Stream Segments (Point Source~ . Blue River above Green Mountain Yampa River below the Steamboat Regional Facility Roaring Fork below Aspen Brush Creek below Snowmass Fraser River below Winter Park Gore Creek/Eagle River below Vail . . Threatened and Impaired Segments (Nonpoint) . Hydrologic Modifications Fraser River and tributaries Blue River and tributaries Eagle River and tributaries . Mine Drainage Peru Creek French Creek Illinois Creek Cross Creek and Eagle River Snake River Ten Mile Creek to Wheeler Junction Williams Fork above Keyser Creek Oak Creek Thompson Creek Coal Creek . . . . Construction and Urban Runoff Blue River above Green Mountain :. t':-::::-:,"'='-:::'''::7:::'''::'.f:';:r::':'~'':".~?i-':::''::. . :;;:~~-- i_ "';'''''"-0''J::f':;:-~';~~'~"'':'''':::'-2'0::';:<~;-'';c._-.;...,,~ --...-.-:,<-<<,.-, ::.'},,::_.,. ~ ,...l c.......-. '" Parameter Pho sphorus Ammonia Ammonia, BOD Ammonia, BOD Ammonia Ammonia Parameter Threatened Threatened Threatened Impaired Impaired Impaired Impaired Impaired Impaired Impaired Impaired Impaired Impaired Parameter Threatened *,' . ".';;-,,,~