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I, , .~ ~lil ;~~~ ( , i'l , . !,- ~ of the damsite or from terrace gravels along Long Ho llow about 5 or 6 miles miles west of the damsite. The pervious materials for Southern Ute Dam would likely come from extensive terrace and outwash gravel deposits 1. 7 miles north of the reservoir site. Pervious fill material would be aggregate, sand, and gravel from La Plata River deposits or nearby river terrace deposits. The coarse gravel borrow material for the Dry Side Canal, New Mexico Irrigation Canal, and the features along these canals would come from along the canal alignments. ,Riprap for construction of Ridges Basin and Southern Ute Dams and the fill material for La Plata and Southern Ute diversion dams would be obtained from an existing granite and quartzite quarry located about 5 miles north of Lemon Dam (see General Map). The materials would be hauled over existing, adequate roads about 25 miles to Ridges Basin Damsite and 45 miles to Southern Ute Damsite, $, Manufactured materials such as pipe, steel gates and struc- tures, pumps, electric motors, and operating and control equipment would probably be obtained from outside the project area, The materials would be hauled to the construction sites by truck. Ready-mix concrete would be availab le from plants in the Durango and Farmington areas. ~'{ :) ..." ":.! h. Cultural Resources Program The project would include a program to compensate for losses of archaeological sites that would occur as a r,esult of construction and operation, This program would be undertaken in coordinat ion wi th the Colorado and New Mexico State Historic Preservation Officers and the Advisory Council on Historic Preservation. Based upon site densities indicated in previous studies, it is estimated that as many as 3,500 sites may be identified before project investigations are completed. Most of these sites are from the Anasazi or "ancient ones," one of the more advanced prehistoric cultures of North America. , ' ;'-, ,~, I ,# , ~:-~ The proposed program would consist of data recovery, analysis, technical publication, and construction of storage and curation facili- ties for permanent maintenance of the artifact collection and other related information, In addition to the scientific value, this would produce information of considerable public interest. An enhancement program is also proposed that would include a visitor center, stabiliz- ation and interpretation of significant ruins, displays of active excavations, and similar public-oriented facilities and activities, 1".'-' ~, ';' :<~ :f0 ~-, :~' :-" ~~ ~; ~ I " Many sites could be preserved in their present condition by adjusting the alignments of project facilities to avoid them whenever possible (such as road rights-of-way, recreation areas, and laterals). Extensive data recovery would be necessary on a sample of sites adequate to answer basic questions on the development of Anasazi society, which would be about 175 sites or about 5 percent of those believed to be in the project area. The program would proceed at a rate of approximately 25 sites per year for 7 years. To complete the regional picture and A-29