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<br />1"'" <br />0, <br />.-t <br />o <br />C1 <br />'~::> <br /> <br />Chapter I II <br /> <br />AFFECTED ENVIRONMENT AND <br />ENVIRONMENTAL CONSEQUENCES <br /> <br />Noise.--The proposed project area experiences the average noise and dust <br />levels associated with any agricultural area. <br /> <br />Impacts <br /> <br />Air Oualitv.--In the proposed project, TSP's would occur as fugitive dust <br />generated from construction activity and vehicular traffic on unpaved roads <br />such as those along ditch rights-at-ways. All contractors working on the <br />proposed project would be required to comply with all applicable State and <br />Federal regulations governing fugitive dust levels. Specifications would <br />require that dust emissions be effectively controlled by using water, <br />chemical stabilizers, or other methods. All costs and necessary <br />arrangements for dust control would be paid by the contractor, although <br />water may be made available for construction purposes. Contractors would <br />also be responsible for preventing any nuisance to persons and damage to <br />crops, orchards, cultivated fields,- or dwellings, resulting from dust <br />generated by their operations. No long-term adverse effects are <br />anticipated from the project. <br /> <br />Noise.--The proposed project <br />levels during construction. <br />from the proposed project. <br /> <br />would create short-term increases in noise <br />No long-term adverse effects are anticipated <br /> <br />Cultural Resources <br /> <br />Present Conditions <br /> <br />During cultural resource investigations conducted in the Grand Valley Unit <br />area in 1983, 82 sites and 13 isolated finds were identified through a <br />Class III survey (Martorano and Hyer, 1984). Prehistoric sites include a <br />petroglyph site identified with the Fremont Culture (A.D. 450-1250), lithic <br />scatters, and open campsites. One campsite has been identified with either <br />the post-Archaic Stage (A.D. 400-900) or the Fremont Culture. More <br />specific determinations could not be made for the remaining prehistoric <br />sites due to the lack of diagnostic artifacts or features. The historic <br />sites represent Euro-American activities such as irrigation, agriculture, <br />community building, transportation, and exploration from approximately 1826 <br />to the present. <br /> <br />The preliminary literature search for the Class III survey in 1983 revealed <br />that 30 previously recorded sites could not be evaluated for eligibility to <br />the National Register of Historic Places due to incomplete or absent <br />locational information found in site records: 3 sites and 3 isolated finds <br />had been determined not eligible; 34 sites had been determined to be <br />potentially eligible; 2 have been nominated to the National Register; and 4 <br />sites are listed on the National Register. The Class III intensive on-the- <br />ground field survey conducted in 1983 on canals and laterals that will be <br />affected by Stage Two of the Grand Valley Unit resulted in locating 9 <br />additional sites and 10 isolated finds (Martorano and Hyer, 1984). Six of <br />these sites and the isolated finds were judged not eligible to the National <br />Register. The remaining three sites were determined to be eligible by the <br />Colorado State Historic Preservation Officer. The Price and Stubb Ditches <br />have been recorded and found not eligible to the National Register. <br />Realigned sections of the Stubb Ditch have been inventoried for cultural <br />resources with negative results. <br /> <br />30 <br />