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GREG LEWIM AND ASSOCIATES <br /> 1645 Court Place <br /> Suite 309 <br /> Denver,Colorado <br /> January 7 , 1994 Phone/FAX(303 6299-9335 <br /> Diane Delaney <br /> Mid-Continent Resources , Inc . <br /> P .O . Box 1298 <br /> Glenwood Springs . CO 81602 <br /> RE : Past control of road erosion . <br /> Dear Diane : <br /> rrcm miy investigation of the mine roads throughout the Summer of <br /> 1993 and from 15 years of experience with construction , reclamation <br /> and slope stability . ! am able to provide you with so,,e <br /> observations regaroing ongo', ng ma-- r,tenance and final reclamation of <br /> these roads . <br /> Listed are rny observations as a registered professional <br /> encirea, Colorado , concerning past road erosion control , ongoing <br /> ma r:�era ce and final reclamation . <br /> 1 ) Site visits have shown that erosion has taken place on the road <br /> fill slopes and ditches . However , when the current condition of the <br /> roads are studied carefully , it is seer, that many of the gullies , <br /> water discharge points and road ditches have reached relative <br /> ec� 11 br u <br /> All of the approximately 15 miles of roads were created by a <br /> bulldoze - Working the inside edge of the roads into the cut slope <br /> and spoiling the material on the outside edge , which then became <br /> the fill slope . Aerial photos show that most of this work was done <br /> in t�-.e 1950 ' s and all of it was done prior to 1977 , thereby <br /> classifying all roads as pre- law . When these roads were initially <br /> created , the newly disturbed ground and steep slopes of downspoiled <br /> material resulted in significant erosion . However , it is extremely <br /> impo-tart to make a distinction between the erosion that occurred <br /> in the early years after the roaC, were built compared to that <br /> wh , cn is now occurring . Many gullies nave worked their way down to <br /> a point where stable rock or the original ground is now found . <br /> Vegetation is now present on a significant portion of the slopes <br /> and has also reduced erosion over the years . In short , although the <br /> erosion has taken place on the roads , most of it occurred a lore <br /> time ago . i doubt if runoff samples fro-- Gu areas are <br />