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<br />SELECTED ALTERNATivE <br />ENVIRONMENTAL QUALITY ACCOUNT (CONTINUED) <br />,Sedgwick-Sand Draws Watershed <br />Colorado <br />Nebraska <br /> <br />Components <br /> <br />17. <br /> <br />D. Historical, archeological, <br />and geological <br /> <br />Measures of Effects <br /> <br />12. <br /> <br />Vector and weed control as provided <br />for in the Operation and Maintenance <br />Agreement will affect the biology <br />and ecosystems in these areas. <br /> <br />13. <br /> <br />Reduced erosion. and sediment rates <br />will reduce the possibility of <br />sediment pollution to the South <br />Platte River during large storms. <br /> <br />14. <br /> <br />200 acres of the reseeding on areas <br />disturbed during construction of <br />structural measures will be estab- <br />lished in plants desirable for wild- <br />life habitat and food. <br /> <br />15. <br /> <br />502 acres above the dams, presently <br />rangeland, will be subject. to peri- <br />.0-9.4<;.. flo_Qdj._ngjgr_1'.e_rjp[i!iU,J,P_l:;o ten <br />days. <br /> <br />16. <br /> <br />33 acres of cropland will be con- <br />verted to floodways. <br /> <br />An average of 205 acres of lower- <br />lying floodplain will not be <br />covered with sediment each year. <br /> <br />1. Reduced erosion rate, bu 1328 tons <br />per year, above structure site will <br />preserve archeological resources in <br />their associated soil strata for a <br />longer period of time. <br /> <br />2. Reduced floodplain erosion scour, <br />by an average of 107,600 cubic yards <br />annually, will preserve archeological <br />resources in their associated soil <br />strata for a longer period of time. <br /> <br />Part 2-8' <br />December 1975 <br />