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2005 Subsidence and Geologic Field Observations <br />Box Canyon, Wesl Flatiron, Apache Rocks, <br />and South of Dwide Mining Areas <br />dimension, were Icx;+lly observed in Raven Gulch and its banks between L+xations 1 and 2 <br />(Figure ~). <br />Fiyure 2. A boulder, about 25 feet long, rests in Raven Gulch. Large boulders are derived from both the <br />west and east sides of Raven Gulch. <br />In summary, comparing the alluvium and culluvium along traverse A-A' with that observed in <br />the Deep Crock traverses, this material has 1) more rlay- to lx+uldcr-site matcnal from the Barren <br />Member of the \•tesaverde Formation and 3) fewer, to absent, intermediate volcanic Intrusive <br />rcxks derived from Mount Gunnison. [lased un observations m:+de in Deep Creek before and <br />after the mining ul longwall panels 14 through 17, the mining of longwall panels l[+ and I+~ is not <br />exlxtctcd to affect Raven Gulch, if they were mine) beneath the first south~acst-trending draw off <br />Raven Gulch (Map 1). No water was observed to 11ow' from this lint, southwest-trending draw <br />of Raven Gulch, even during the spring of 2OU5, a period when, haled on the abundant growth of <br />vegetation, the precipitation appears to he above no+m:+l. <br />631-032.110 Wnghl Water Engineers, inc. Page 10 <br />November 2005 <br />