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Exhibit K <br /> Page 1 <br /> EXHIBIT K <br /> CLIMATE INFORMATION <br /> Per Rule 6.4.11—Climate:Provide a description of the significant climatological factors for the locality. <br /> The climate over the plains of eastern Colorado remains generally uniform across locations,characterized by <br /> abundant sunshine, limited rainfall,moderate to high wind movement,and a large daily range in temperature.About <br /> 70-80 percent of the annual precipitation falls as rain during the growing season from April to September(WRCC, <br /> 2016-2024a). <br /> The region surrounding the Kersey Mine averages an annual high temperature of 89.6°F and an annual low <br /> temperature of 13.9°F. Summer temperatures during July and August average 92°F and 89°F,respectively. Winter <br /> temperatures during January and February average 46°F and 56°F,respectively.The average annual temperature is <br /> 47.5°F. <br /> Average annual precipitation is 14.8 inches.Average annual snowfall is 38.3 inches. May is the rainiest month, <br /> averaging 2.3 inches of precipitation.March receives the most snowfall on average,with 7.8 inches,followed by <br /> December with 6.2 inches. <br /> Pan evaporation data is available from a station located about seven miles southwest of Wiggins(which is <br /> approximately 20 miles southeast of the Mine location)for the period 1960 to 1971. The average annual pan <br /> evaporation is 54.12 inches,occurring primarily during the months of:April(6.82 inches);May(8.50 inches);June <br /> (8.42 inches);July(9.97 inches);August(8.09 inches);September(5.87 inches); October(4.22 inches); and <br /> November(2.23 inches)(WRCC,2016-2024b).The mean annual evapotranspiration for Weld County is between 31 <br /> and 40 cm per year;or 12.2 to 15.7 inches per year,yielding a ratio of evaporation to precipitation of as much as <br /> 1.09: 1. <br /> Prevailing winds are generally from the northwest and north-northwest,as demonstrated by the wind rose data <br /> depicted in Figure K-1: Wind Rose—Kersey Mine. This wind rose reflects full-year data compiled in 2023 and <br /> 2024 for an unrelated location approximately 11 miles west of the proposed Kersey Mine at 40.4356°N, <br /> 104.6319°W at the Greely-Weld County Airport;and represents the geographically closest and most recent data <br /> determined to be available by the Midwestern Regional Climate Center(MRCC). <br /> References: <br /> Midwestern Regional Climate Center(MRCC). Cli-MATE Tools—Wind Rose.2024. <br /> Western Regional Climate Center(WRCC,2016-2024a).Climate of Colorado: Climate of the Eastern Plains.2016- <br /> 2024. <br /> Western Regional Climate Center(WRCC,2016-2024b). Monthly Average Pan Evaporation: Colorado.2016-2024. <br /> Colorado Sand Company II,LLC <br /> Kersey Mine Construction Material Regular(112)Operation Reclamation Permit Application <br /> June 7,2024 <br />