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iii iiiiiuiiiiu iiiii, ~ <br />999 <br />• EXHIBIT K <br />CLIMATE <br />Climatological scale records (20 year minimum) of precipitation and tem- <br />peratures do not exist of the site of the Mesa Gravel Pit. However, a <br />National Weather Service Station with climatological scale records is opera- <br />ted in the city of Hayden, Colorado, approximately 4.2 miles to the west- <br />norihwest of the Mesa Gravel Pit (see Exhibit B). <br />The Mesa Gravel Pit is located at an elevation of approximately 6,600 feet <br />(MSL) and the Hayden weather station is sited at a similar elevation of 6,375 <br />feet (MSL) (National Oceanic and Atmospheric Administration, 1980). <br />Further, the Hayden weather station and the Mesa Gravel Pit are both <br />located in the Yampa River drainage basin. <br />Because the Hayden Station is located near the Mesa Gravel Pit and with <br />similar terrain and elevation, it is believed that the Hayden Station climato- <br />• logical records should closely represent conditions at the Mesa Gravel Pit <br />site. Therefore, the following information on temperature (55 years of <br />record) and precipitation (61 years of record) are for the Hayden Station, <br />Hayden, Colorado (National Oceanic and Atmospheric Administrotion, 1980). <br />Table K-I presents the "Average Temperatures and Departures From <br />Normal" by month for the year 1980. The difference of each monthly tem- <br />perature and the departure from normal for that month, yields the fifty-five <br />(55) year average temperature for that month. <br />• <br />K- I <br />