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<br />2.0 SITE CHARACTERIZATION <br />This section presents a description of the existing surface and subsurface conditions in the area of <br />the proposed facilities based upon inspection observations, information provided by ITEC and others, and <br />the data obtained through the preliminary site investigation. <br />2.1 Location <br />' The Cash Mine and adjoining property is located in the Gold Hill mining district, Boulder County, <br />Colorado. The mill associated with the Cash Mine is located midway between Summerville and Gold Hill, <br />' south east of Boulder County Road 52. The Cash mine is situated in the northwest quarter of the southeast <br />quarter of Section 12, Township 1 North, Range 72 West. <br />2.2 Topography <br />The site upon which the existing mill and appurtenant facilities are located is comprised of <br />' moderately sloped foothill terrain, at an elevation of approximately 8,425 feet above mean sea level. The <br />terrain in the specific vicinity of the existing tailings impoundment is gently sloping, with surface grades in <br />' the range from approximately 12% to approximately 25%. <br />2.3 Climate and Hydrology <br />' The climate in the vicinity of the Gold Hill mill can be characterized as semi-arid, typical of the <br />foothills in the Front Range area of Colorado. The most representative historical climatological data for the <br />' Gold Hill area was found to be monthly data recorded at a weather station in Nederland, CO (elevation 8,200 <br />feet AMSL}, located approximately 7.~ miles southwest ofGold Hill. The data represents a recording period <br />' of 18 years, from 1970 to 1988. <br />i During the 18-year recording period, the average annual mean temperature was approximately 39°F. <br />.The average monthly maximum temperature for the period was 53°F, with the highest average monthly <br />maximum temperature of 75°F occurring in July. The average monthly minimum temperature for the period <br />was 25°F, with the lowest average monthly minimum temperature of 10°F occurring in January. <br />' The data from the Nederland station also indicates that the average annual precipitation in the <br />vicinity of the project site is approximately 17.4 inches. Precipitation is greatest during the months of April, <br />' May, July and Augus[ (averaging 2.21 ", 2.69", 2.39" and 2.01", respectively), while the least precipitation <br />is recorded during the months of December, January and February (averaging 0.70", 0.54" and 0.61 ", <br />' respectively). Summertime precipitation is usually associated with convective showers. Average annual <br />snowfall depth in the area for the recording period was approximately 127 inches, with the maximum <br />recorded annual snowfall (1979) amounting to 201 inches. Peak runoff from snowmelt typically occurs <br />' during the months of May and June. <br />A discussion of peak storm rainfall events, and the capacity of [he impoundment accommodate <br />' runoff from such events, is presented in Section 5.0 of this Design Report. <br />3 <br />1 <br />