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Afrer mining, BRL plans to return the land to the pre-mining land uses of grazing for livestock <br />and wildlife for the mine sites, and orchard land for the loadout facilities. The permit renewal <br />will not change the previously approved post-mining land uses. <br />Cultural and Historic Resources -Rules 2.04.4, 2.05.6(4) <br />Cultural, historic, and archaeological studies have been conducted over the life of mine and <br />adjacent azeas in April and May of 1977, August 1980, August 1981, July 1982, May and <br />September of 1984, and July 1986. The methodology and results of these surveys are set forth in <br />detail in the Archaeological Appendix in Volume 9B. The State Historical Preservation Officer <br />reviewed the 1983 application/petYrtit revision and the 1986 permit revision and has determined <br />that there aze no sites within the permit area currently listed in the National Register of Historic <br />Places. <br />Surveys classified seven of these sites as eligible for the National Register pending further <br />investigation. None of the seven is going to be disturbed by development activities, and none <br />will be undermined. The Roatcap Game Trail Site (SDT 271) was excavated in late 1986 to <br />ensure that increased access in the East Roatcap drainage would not result in vandalism. Several <br />of the other sites have a very limited potential for subsidence damage, as they aze found on the <br />margins of the angle of draw. <br />Climatological Information and Air Resources -Rules 2.04.8.2.05.4(2)(h), 2.05.6(11, 4.17 <br />Climatological documentation is presented on pages 58-66, Section 2,04 of Volume 1 and in the <br />Climatology and Wind Direction Appendix, Volume 9. BRL has also provided copies of all <br />emissions permits from the Colorado Department of Health in Volume 9. Evaporation pan <br />monitoring data are summarized in the Annual Hydrology Reports. Climatological data for the <br />North Fork region is available from Paonia, three (3) miles due south and 1,500 feet lower in <br />elevation than the mine site. The average annual temperature is 49.ONF at Paonia, with an <br />average monthly mean of 24.SNF in January and 71.9NF in July. At Paonia, the annual <br />precipitation is 8 to 15 inches. <br />The local climate of the North Fork area is strongly influenced by microclimatic features -slope <br />aspect, elevation, soil type, soil moisture content and vegetation. The steepness of the terrain, <br />together with the type and amount of vegetation, orientation and range of elevation, aze the major <br />controls of the diurnal wind patterns. The shape and orientation of the North Fork valley is such <br />that the drainage (or katabatic) flow is the dominant flow for most hours of the day. Prevailing <br />winds are from the south-southeast, with wind speeds often (10) miles per hour occurring in <br />June. Below Paonia, the wind speed appeazs to decrease sharply as the air spreads over the lower <br />valley. Because of this strong drainage wind, frost pockets aze not allowed to form, thus creating <br />a favorable microclimate for fruit tree farming. <br />11 <br />