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The Leadville Mill M1990-057 <br /> EXHIBIT A—LEGAL DESCRIPTION &LOCATION MAP <br /> Page 3-2 <br /> 278 days per year with freezing temperatures, which can occur in any month. The <br /> record high temperature was 850F. The record low temperature was -38°F. <br /> Average annual precipitation is 12.2in. The wettest year was 1957 with 22.1in and the <br /> driest year was 1994 with 8.8in. The most precipitation in one month was 4.9in in <br /> January 1996. The most precipitation in 24 hours was 2.1in on December 24, 1983. <br /> Average annual snowfall is 143in. The most snowfall in one year was 248in in 1996. <br /> The most snowfall in one month was 63in in February 1995. <br /> TABLE 3-1: CLIMATE DATA FOR LEADVILLE <br /> Description Jan Feb Mar Apr May Jun Jul Aug Sep Oct I Nov Dec Yr. <br /> Temperature (°F) <br /> Rec.High 56° 54' 61' 65" 80' 82° 85° 83° 80' 72° 66' 56' 85° <br /> Avg.High 31° 34° 39° 46° 57' 68° 72° 70' 63' 52' 38' 31° 50° <br /> Mean 17° 19` 25° 32° 42° 50° 55° 53° 47° 37° 25` 17° 35` <br /> Avg.Low 3° 5° 11" 19" 27° 33' 38° 37' 31° 23° 12° 4° 20° <br /> Rec.Low -27' -38° -30° -17' 7` 19° 26° 23' 8° -7° -24° -31° -38` <br /> Precipitation (inch) <br /> Precipitation 0.7 0.8 0.9 1.1 0.7 0.9 1.7 2.0 1.1 0.7 0.8 0.8 12.2 <br /> Snowfall 18 18 21 24 8 2 0 0 2 10 19 19 143 <br /> Precip.Days 9 8 10 10 7 6 12 14 9 6 9 9 109 <br /> Source:Western Regional Climate Center <br /> 3.2 REGIONAL GEOLOGIC SETTING <br /> The Mosquito Range,the study of whose geological structure formed a necessary basis <br /> for that of the ore deposits of the Leadville region, is the western boundary of the <br /> South Park, and has thus been considered from a topographical standpoint to form <br /> part of the Park Range. Geelegy-chews, heweyeF,that iFv Regional geologic <br /> characterization follows. During Paleozoic times <br /> new-known as the Parks were formed by the Archean land masses of the Colorado <br /> Range on the east and of the Sawatch and its continuation to the north,the Park Range <br /> on the west, and that the uplift of the Mosquito Range did not occur until the close of <br /> the Cretaceous. <br /> Prior to this uplift the various porphyry bodies, which now form a prominent feature <br /> among the rock formations of the region, were intruded into the sedimentary beds <br /> deposited during Paleozoic and Mesozoic times, spreading out between the beds and <br /> sometimes crossingthem, but being most uniformly distributed at the top of the Lower <br /> Carboniferous or Blue Limestone. It was in this limestone that the greater part of the <br /> Version 3.0 December 2020 <br />