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<br /> <br />,fo. iJ'" 53.' I.. <br />u :i;..~" .I. <br /> <br />Figures 23-39. <br />23. <br /> <br />34. <br /> <br />35. <br /> <br />36. <br /> <br />37. <br /> <br />38. <br /> <br />39. <br /> <br />Page <br /> <br />24. <br /> <br />Graphs--Continued <br />Peak-day and permanent population projections for the <br />Steamboat Springs area. . . . . . . . . . . . . . . <br />Computed concentrations of ultimate-carbonaceous bio- <br />chemical oxygen demand for existing wastewater- <br />treatment facilities and Q7,10-flow conditions in <br />the Yampa River . . .. . . . . . . . . . . . <br />Computed concentrations of dissolved oxygen for <br />existing wastewater-treatment facilities and <br />Q7,10-flow conditions in the Yampa River. . . . . . . <br />Computed concentrations of ammonia nitrogen for <br />existing wastewater-treatment facilities and <br />Q7,10-flow conditions in the Yampa River. . . <br />Computed concentrations of fecal-coliform bacteria <br />for existing wastewater-treatment facilities and <br />Q7,10-flow conditions in the Yampa River. . . . <br />Computed concentrations of ultimate-carbonaceous <br />biochemical oxygen demand using 1978 standards <br />for effluent, Yampa River . . . . . . . . <br />Computed concentrations of dissolved oxygen using <br />1978 standards for effluent, Yampa River. <br />Computed concentrations of ammonia nitrogen using <br />1978 standards for effluent, Yampa River. <br />Computed concentrations of total nitrogen using <br />1978 standards for effluent,Yampa River. . . <br />Computed concentrations of orthophosphate using <br />1978 standards for effluent, Yampa River. . . <br />Computed concentrations of nonionized ammonia nitrogen <br />using 1978 standards for effluent, Yampa River, <br />assuming 9 milligrams per liter (December) and 2.8 <br />milligrams per liter (September) of ammonia nitrogen <br />in effluent from wastewater-treatment plant . . . <br />Computed concentrations of ammonia nitrogen in the <br />Yampa River, assuming 3.0 and 4.0 milligrams per <br />liter of ammonia in effluent from wastewater- <br />tr.eatment plant . . . . . . . . . . . . . . . . . <br />Computed concentrations of fecal-coliform bacteria <br />using 1978 standards for effluent, Yampa River. <br />Computed concentrations of ammonia nitrogen using <br />1985 standards for effluent, Yampa River. . . <br />Computed concentrations of total nitrogen using 1985 <br />standards for effluent, Yampa River . ..... <br />Mean diversity of benthic invertebrates and nutrient <br />concentrations, Yampa River. . . . . . <br />Mean total number of organisms per square meter and <br />nutrient concentrations, Yampa River. . <br /> <br />64 <br /> <br />41 <br /> <br />43 <br /> <br />25. <br /> <br />45 <br /> <br />26. <br /> <br />46 <br /> <br />27. <br /> <br />47 <br /> <br />28. <br /> <br />49 <br /> <br />29. <br /> <br />50 <br /> <br />30. <br /> <br />51 <br /> <br />31. <br /> <br />52 <br /> <br />32. <br /> <br />53 <br /> <br />33. <br /> <br />54 <br /> <br />55 <br /> <br />57 <br /> <br />58 <br /> <br />59 <br /> <br />63 <br /> <br />v <br />