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-~- ; <br />STATE OF COLORADO FCC HnPD D.•M, Gov c.o o~ <br />DEPARTMENT OF NATURAL RESOURCES <br />D. Monte Pascoe, Executive Director <br />MINED LAND RECLAMATION <br />423 Centennial Building, 1313 Sherman Street <br />Denver, Colorado 80203 Tel. (30~) 839-3567 <br />III III III IIIiill III <br />999 <br />David C. Shelton <br />Director <br />May 13, 1981 <br />TO: Mike Savage //~~"~%~~ <br />FROM: Bob Liddle <br />RE: Bourg - PRR - Roads <br />The information you requested in the PAR covers most requirements. The <br />level of detail needed shouldn't be great due to the Location. I have <br />just a few comments. <br />1. Page D-7 states that during reclamation, BLM roads will be re- <br />claimed according to BLM standards- They say that we agreed to allow <br />BLM standards to "supercede" MLRD standards. I don't know if this is a <br />problem or not. They state that they wiZZ submit the BLM reclamation <br />plan. I'd Like to see it when it comes in. You might specifically <br />request it. <br />2. Culverts and drainage were not reviewed by Rich so I dumped the task <br />of PAR on him. It appears that no culvert designs were included and <br />the Mann Draw culverts are not what the plan calls for (but should be OK). <br />Rich is going to get a letter out to you on drainage and culverts this <br />week. Make sure it includes the following: <br />a. As required under Section 9.03.2(9)(e)(ii), the applicant <br />must demonstrate that culverts were designed, constructed, <br />and maintained to sustain the vertical soil pressure, the <br />passive resistance of the foundation, and the weight of <br />the vehicles to be used. This information should include <br />gross weight of heavy trucks, thickness of pipe, size and <br />type of corrugations and size of pipe. (The pipe arch <br />culverts used on Mann Draw are less resistant to loads <br />than circular pipes. I noticed some sagging of these <br />culverts in my last inspection.) They should report the <br />amount of fill material they used. <br />I'll have to look at the roads again when all this information comes in. <br />