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2.1 CLIMATOLOGY <br />The general climatological conditions for the Craig, Colorado vicinity have <br />been collected and recorded for the pas[ forty-five (45) years by the National <br />Weather Service Cooperative observer system. because of the energy (coal) <br />development and [he construction of the Craig Generating Station, intensive <br />and specialized studies of the various meteorological conditions were per- <br />formed during [he pas[ decade for input to the Yampa Project Environmental <br />Impact Statement (EIS) and environmental permits. The results of these stud- <br />ies are discussed in the following sections and much of their respective data <br />are presented in Appendix C, Climatology. <br />Since 1970, ambient air temperature, wind direction and velocity, relative <br />humidity and we[ bulb temperatures have been recorded. Data on 24 hour pre- , <br />cipitation amounts, snowfall and snow depths have also been collected. Figure <br />2.1-1 depicts the locations of the meteorological stations in relation to the <br />^~ city of Craig and to Trapper Mine. <br />Meteorological Station C-1 was a temporary station operating from November, <br />1970, [o August, 1972. Meteorological Station C-2 was installed in 1973, as <br />the permanent station for the area and is situated immediately adjacent to the <br />Craig Generating Station and Utah International's Trapper Mine office complex. <br />A temporary station was in operation on Thompson Hill from January 1 through <br />May 29, 1975. <br />Full descriptions of these stations, their instrumentation and collected data <br />are published in the Phase C and Phase D annual reports by Stearns-Roger <br />(1973, 1974, 1975 and 1976). <br />The nearest existing meteorological stations [o Utah's Trapper Mine are the <br />200' met tower at Site C-2 and the National Weather Service (NWS) cooperative <br />station at the Trapper Mine office building [hat was established May, 1977. <br />~, <br />2-2 <br />