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DRAINAGE REPORT <br /> CJK SPECIALTY AGGREGATES <br /> LAKE COUNTY COLORADO <br /> 1.0 PROJECT BACKGROUND <br /> Background <br /> The Drainage Report follows the criteria set forth by Urban Hydrology for Small <br /> Watersheds, TR-55 by the United States Department of Agriculture (USDA),Natural <br /> Resources Conservation Service (MRCS), Conservation Engineering Division. <br /> The purpose of the Drainage Report is to support the CJK Specialty Aggregates Surface Water <br /> Management Plan (SWMP). The SWMP plan is to outline guidelines to control, contain, <br /> monitor, maintain and mitigate potential surface water erosion and sedimentation impactsfrom <br /> mining activities. <br /> Operation <br /> Union Milling Contractors (UMC), owned by CJK Milling Company, is operating CJK <br /> Specialty Aggregates` facility providing aggregate products for concrete, asphalt, road base, <br /> and ballast end user. <br /> Project Location <br /> The CJK Specialty Aggregates site is located on the Leadville South Quadrangle USGS 7.5 <br /> quadrangle map. (See Figure 1) approximately 1.5 miles south west of Leadville, Colorado. <br /> The aggregate property is accessed by Highway 24 where the property boundary is <br /> approximately *** feet (ft) from the highway entrance. The property is located at <br /> N39°14'00.30"and W106°19'09.83" at an elevation of 9,814ft(Southwest Quarter of the <br /> Southwest Quarter of Section 27 Township 9 South, Range 80 West of the 6th Principal <br /> Meridian, Lake County Colorado). The property is bounded on the west by the Leadville <br /> Sanitation District Facility and on the north, east, and south, by lands zoned Industrial/Mining <br /> (IM). <br /> Property Description <br /> The historical slag (early 1900's) site is zoned industrial/mining (IM) and occupies an area of <br /> approximately 56 acres. The pre-slag disposal site is characterized as having natural slopes <br /> ranging from 3to 5%. <br /> The property is devoid of vegetation with a few locations with groundcover. <br /> There are no major lakes, or perennial streams, within the property. Surface runoff occurs via <br /> sheet flow to California Gulch (See Figure 2). <br /> 4.3 0.2021 <br />