Laserfiche WebLink
PRE -MINING AND MINING PLAN MAPS OF AFFECTED LANDS <br />EXHIBIT C <br />Since extensive mining has occurred on the site since 1872, a pre -mining contour map of the site is <br />unavailable, however, the approximate contour can be seen from looking at the contour of the <br />surrounding area on Map C-1. The mining area basically sloped from the South Platte River uphill to <br />the east similar to the grades shown north and south of the existing disturbance. <br />Map C-1 shows the soils, vegetation, and pre -permit (1979) land uses of the site. <br />The original contours outside the permit area and the Map C-2 contours were based on an innovative <br />technique by Enerquest Company of Denver known as an airplane mounted laser. Enerquest was <br />commissioned to do the mapping for the Ducommun Trust (earlier permittee) and the site was flown in <br />August of 2001. The method uses the laser to bounce off the ground surface and back to the airplane, <br />resulting in extremely accurate mapping over a large area as well as orthographic photos which overlap <br />the mapping data. <br />Alma Place Mine 01/15 7 <br />