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• research proposal calls for a proposed slurry pneumatic backfill system for <br />storage in the mined-out portions of the East mine. The technology is <br />available, and the practice is commonly accepted in European coal mines. Hy <br />1982, Hawk's Nest should not need to use the landfill; hence, truck traffic on <br />SH-133 will be positively impacted. 6hould this experimental program prove <br />unfeasible, then the expansion of the mine could more than double truck <br />traffic and mould negatively impact the county landfill. WSCC and the County <br />should continue to keep in communication regarding the efficacy of the <br />bnckfill program. <br />D. Discussion <br /> The impact of an additional 257 people generated by Hawk's Nest may be more <br /> fairly assessed in the context of overall future growth that may be incurred <br /> in Delta and Gunnison Counties. Clearly, the la rge-scale impact of Western <br /> Slope on employment and population occurred from 1975 to 1960. In terms of <br /> cumulative growth projected to occur, Western Slope's expansion appears <br />• miniscule, as demonstrated below. <br />The Colorado Population Reports address law, medium and high growth <br />scenarios. In selecting which scenario to use, the decision rule employed was <br />to use the projections most in line with actual 1980 Census figures. In other <br />words, the year 1980 was once a projection derived from the Colorado computer <br />model; thus, the forecast which most closely matched the Preliminary Census <br />figure was selected. As a result, the low scenarios were typically chosen, <br />except for Gunnison County and Delta Cfty, where the moderate scenarios were <br />utilized. Colorado population projections already take into account "most <br />probable" energy developments; hence, Table IV-3 indicates that through the <br />decade of the Eighties, Paonia will grow by 342, Hotchkiss by 465, Delta City <br />by 1,130 and Crawford by 237. The Counties of Delta and Gunnison will grow by <br />8,632 and by 7,796, respectively. These figures represent the cumulative <br />impacts of all types of development in the region. <br />The future growth of the 80's can be expected to occur if the coal sector <br />• continues to expand; that growth can be accommodated if Delta and Gunnison <br />Counties' planning efforts are geared to the expected 1990 population. <br />56 <br />