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n~ ~ ~~~ <br />37 E. Colorado Avenue <br />Denver, CO 80210 <br />(303) 722-9067 <br />Environmental Services <br />• Botanical Studies • <br />• <br />Photography <br />iii iiuiiiiiiiiiii~ <br />999 <br />October 13, 1990 <br /> <br />Dan Rernandez <br />Mined Land Reclamation <br />215 Centennial Bldg. <br />1313 Sherman St <br />Denver, CO 80203 <br />RE: Access road and sediment pond <br />Corrective Action Plan. <br />Your File No: M-77-210 <br />Dear Dan: <br />OCT1ii1990 <br />Mined Land <br />i3eciarn~[ion Division <br />coordination at Sr~der Quarry in <br />During your October 12, 1990 inspection of the CAP work we discussed the <br />problems associated with implementing the sediment basin construction and <br />coordination with the adjacent roadway. The plan called for extensive <br />backfilling on the zest aide of the roadway resulting in a roadway width <br />of 28 feet adjacent to the upper pond. Castle ie concerned that such a <br />road width may not be sufficient. I indicated that Castle was unsure <br />they wanted to do that backfilling. On the evening of October 12 I <br />discussed the matter with Gordon Morgan and it was decided that it would <br />be better to leave the road at its present width rather than do the <br />backfilling. The reason for this is primarily a safety issue. <br />If the road was constricted to the 28 foot width a hazardous situation <br />could occur adjacent to the upper pond. Trucks coming up the hill try to <br />maintain a good speed through this area so they can easily climb the <br />final grade to the quarry. Because the road adjacent to the lower pond <br />is already rather narrow there needs to be provision for a truck <br />traveling downhill to pull far enough over to the right eo an uphill <br />bound truck can pass without slowing. It does not appear that 28 feet is <br />actually wide enough to allow this to occur. As a result, if the road <br />was narrowed, at the least, it will make it more difficult for uphill <br />bound trucks to climb the final grade. At the worst, an uphill bound <br />truck might not slow down enough and the two trucks could aide-swipe each <br />other. <br />Fhrthermore, under bad weather conditions the road could become slippery <br />and the additional width in this area is needed to provide an additional <br />margin for error, especially for fully loaded trucks coming down the <br />steep grade from the quarry. With a 28 foot width and the <br />