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EXHIBIT K CLIMATE INFORMATION <br /> 1. Introduction <br /> The following section will describe the significant climatological factors for the Detroit City <br /> Mine. Rain and snow amounts, and the time of year that these occur, are important as this affects <br /> planting times and irrigation needs for grasses and trees that will be part of the final reclamation. <br /> This exhibit was not required in the original I I0(1)permit but is included here in the spirit of <br /> thoroughness. <br /> 2. General Information <br /> The Detroit City Mine is located approximately 3 miles northwest of Alma, Colorado at an <br /> elevation of approximately 11,500 feet. The area is classified as a Polar Tundra(ET) under the <br /> Koppen Classification system.' This climate type is dominated by the winter season, and defined <br /> solely upon temperature. Maximum temperatures range from 32' F to 500 F.2 Summers are very <br /> short and the growing season is limited. The site is classified as USDA Hardiness Zone 5a,3 with <br /> a growing season of approximately June 21 —July 31 to August 11 —August 20,4 a total of 12— <br /> 61 days. The National Weather Service operates the Climax, Colorado Weather Station (Station <br /> ID 051660) 5 miles northwest of the Detroit City Mine on the continental divide at an elevation <br /> of approximately 11,350 feet.5 Climatic conditions as recorded at Station 051660 would be <br /> expected to be similar to conditions at the Detroit Cite Mine. The site of the Detroit City Mine <br /> will be subjected to long, cold winters with copious amounts of snowfall. Summers will be short, <br /> with a very limited growing season. Strong winds will occur during all times of the year. Strong <br /> winds during the spring months may cause rapid drying of the soil surface, and care will need to <br /> be taken to protect and nurture seeds and new grasses. <br /> I http://koeppen-jzeiger.vu-wien.ac.at/present.htm#GooizieEarth <br /> 2 http://koeppen-veiger.vu-wien.ac.at/pdf/Paper 2006.pdf <br /> 3 https://planthardiness.ars.usda.gov/PHZMWeb/InteractiveMap.aspx <br /> 4 https://www.weather.gov/bou/frostandfreezecolorado, https://www.plantmaps.com/interactive- <br /> colorado-fi rst-frost-date-map.php <br /> 5 wrcc.dri.edu/cgi-bin/cliMAIN.pl?col660 <br /> Greg I. icki and Associate#,PI.1 d' <br /> October 2019 K-1 <br />