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GREAT DIVIDE ENGINEERING <br />AND SURVEYING <br />P. 0. Box 605 <br />404 N. 19th Street <br />Phone 303 275.8881 <br />Canon City, Colorado 81212 <br />Li Chen <br />RE: GEC PERMIT APPLICATION NO C-037-81 <br />HAUL ROAD A CROSSING NEWI.IN CREEK <br />February 3, 1983 <br />Recently, our firm made an on-site <br />sCallation under Haul Road A, where it <br />permit boundary of GEC Minerals, Inc. <br />follows: <br />inspection of the culvert in- <br />crosses Newlin Creek within the <br />Our findings from this inspection <br />1. The 72" culvert was installed at the design elevation and grade <br />as specified in out engineering design prepared in May, 1982. <br />2. The 72" culvert was moved approximately 20 feet east, per our <br />construction staking direction, to provide for better low flow <br />hydraulics within Newlin Creek <br />3. The road profile over the culvert was checked for elevation and <br />found to be consistent with the design referenced above. <br />4. A dirt safety berm had to be removed, from the downstream side of <br />the Haul Road, so that the depressed portion of the roadway could <br />function as an overflow weir, as designed. This berm must remain <br />removed so that design flows and velocities can pass over the roadway <br />unimpeded. <br />This inspection verified that this crossing was installed per our <br />design of May, 1982, and therefore should be capable of safely passing the <br />10 year-24 hour storm expected from this drainage basin. <br />F <br />NUMBER <br />i~~~s <br />Truly yours, <br />6 <br />