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<br />EXHIBIT 37a <br />REGIONAL IRRIGATION STUDY <br />OF NORTH PARK FOR <br />KERR COAL COMPANY <br />Introduction <br />This regional analysis of the irrigation practices of a <br />portion of North Park in Jackson County, Colorado has been <br />undertaken to provide additional information requested by the <br />Colorado Mined Land Reclamation (MLR) staff in their Kerr <br />Coal Company permit review letter dated October 9, 1980. <br />Original material (Kerr Coal Company Exhibit 37) submitted in <br />connection with the alluvial valley floor determination for <br />Bolton, Williams, Bush and Sudduth Draws was considered <br />• inadequate by the MLR staff. While the original study <br />evaluated the engineering and economic aspects associated <br />with properly designed irrigation systems for the draws, in <br />the opinion of the MLR staff it did not adequately analyze <br />potential irrigation in terms of regional practice. The study <br />area, the irrigation systems and the estimated irrigated <br />areas for the present study are shown on LRCWE Plate I, North <br />Park Irrigation Study. <br />The portion of North Park evaluated for this study includes <br />all of the irrigation system believed to exist on the <br />Canadian River and on the Michigan River, excluding the <br />Illinois River. The irrigation systems and irrigated areas <br />were identified on U.S.G.S. 7~ minute quadrangle maps. No <br />field verification was attempted. A straight line diagram of <br />a portion of the Canadian River was compiled from the State <br />Engineer Basin Rank list and stereo paired air photographs <br />• were evaluated for a portion of the Canadian River area. <br />Extensive use has been made of Kerr Coal Company Map 27, <br />Leonard Rice Consulting Water Engineers.lnc <br />