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<br />l'lIlle <br /> <br />FlflUllF. 9. Graph showing frequency distributions of total manganese in streamflow, <br />August-September 1975 through August~September 1976 - - - - - - - - - - - - 37 <br />10. Graph !thowing frequency distributions of arsenic in !ttream-bottom sediments, <br />August-September 1975 through August-September 1976 - - - . - - - - - - - - 38 <br />11-13. Maps showing: <br />11. Areal distrihution of !:lediment yields extrapolated from Rtatioll records - 43 <br />12. Lineament and fault mop superirnpo!'\ed on Landsflt scene t.hat includes <br />t.1lf' west.f'rn part or thl:' Ynrnpa River l)fi~ill. Februnry 2G, 1975 - - - - 47 <br />13. Projected increases ill dissolved-solids concentrations in ground wAter <br />resulting from all mines in the Twentyrnile Park model area - - - . - - 49 <br /> <br />TABLES <br /> <br />Pllge <br /> <br />TABLF. 1. Coal.re80urcedevelopmentaltemat.iveli, 1975-90 - - - - - - - - -. - - . - - - - - - - - - 6 <br />2. Estimates of water-withdrawal coefficients, water-withdrawal multipliers, and total <br />water withdrawal, by sector, for the Colorado part of the Yampa River basin <br />in 1975 _ _ _ _ _ _ _ _ _ _ . . . _ _ . . - _ - - - - - - - - - - - - - - - - - - - - - . - . . . 16 <br />3. Comparison of the impact of four alternative coal-use processes on selected aspects <br />of the environment, Colorado part of the Yampa River basin - - . - - - - - - - - 18 <br />4. Direct and indirect impacts, of four different coal. use proce~es, Colorado part of <br />the Vampa River basin _ _ _ _ . . . _ - - - - - - - - - - - - - - - - - - - - - - - - . . . 19 <br />5. Water. use and residuals discharge under seven coal-resource development alterna- <br />tives-1990 _ _ _ _ _ _ _ _ _ _ . . _ . - . _ - - - - - - - - - - - - - - - - - - - - - - - - - 19 <br />6. Comparison of four cooling technologies assuming mining of 12.5 million ton8 <br />(11.3 million t) of cOAl per year - - - - - - - - - - . - . - - - - - - - - - - - - - - - - 22 <br />7 _ Propo!ted major surface-water impoundments, reservoir-modeling analysis - - - - - 30 <br />8. Seasonal maximum likely ambient concentrations of chemical constituents ill streAm- <br />now, August.September 1975 through AugulihSeptember 1976 - - - . . - . - - - 40 <br />9. Potent-ial sediment yields from surface-mined areus for three estimated levels of cOlli <br />production, 1990 _ _ _ _ _ . _ _ _ _ . _ - - - - . - - - - - - - - - - - - - - - - - - - . - - 45 <br /> <br />METRIC-ENGLISH EQUIVALENTS <br /> <br />TOCllovert <br /> <br />M\ll!i[ll>'hy <br /> <br />[The inch-p(llmd unit~ u~pd in this repl'rt mlly he cnnvprted to IllPlric unll._ by the following ('(ll\Verai'lll fllcton;1 <br /> <br />Tnobt.oio <br /> <br />square foot per second <br />(ft'/,) <br />cubic foot per second <br />(it'!,) <br />mile(mi) <br />square mile (mi'!) <br />acre <br />acre-foot (acre-ft) <br />gallon (gal) <br />tml(short) <br />British thermal unit (Btu) <br />pound <br /> <br />0,0929 <br />0.02832 <br />1.609 <br />2,590 <br />0.4047 <br />1,233 <br />3.785 <br />0.003785 <br />0,9072 <br />1,055 <br />0.404 <br /> <br />square meter per second <br />(m'/,) <br />cubic meter per second <br />(m'/,) <br />kilometer (km) <br />square kilomet€r (km') <br />hectare (h8) <br />cubic meter (m 1) <br />liter(L) <br />cubic met€r (m1) <br />met-ric ton (t) <br />joule (J) <br />kilogram (kg) <br /> <br />VI <br />