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7. Drainage: Specifications showed the following <br />drainage crossings: <br />18" CMP at 7 + 00 <br />12" existing irrigation pipe at 12 + 11 <br />16" existing CMP from reservoir at 20 + 25 <br />18" CMP at 24 + 25 <br />18" CMP at 28 + 10 <br />8 - 36" CMPs at 37 + 00 <br />12" existing CMP across access road to topsoil <br />stockpile at 35 + 50 <br />18" CMP at 47 + 84 <br />All culvert installations were found to be sound and <br />free of problems. However, it was found that an <br />unusually high spring '84 runoff caused the reservoir <br />adjacent to the haul road to overtop the road, with the <br />pre-existing 16 inch outlet pipe fully open. Mine <br />operators installed two temporary 18 inch culverts near <br />the road surface to minimize erosion. These temporary <br />culverts are still in place, however it is impossible <br />to drive over the culverts. It is suggested that one <br />18 inch diameter CMP be permanently installed under the <br />road to drain the reservoir under peak flow periods. <br />Except for the problem noted above, the road was free <br />of erosion problems. Adequate vegetation has taken <br />hold on all road embankment slopes. <br />8) Guardrail: To be installed as shown in Exhibit C-13 <br />and C-14 of the modified permit. all guardrail <br />installations were verified except for the length from <br />18 + 00 to 21 + 50 along the reservoir. This section <br />of guardrail was not installed. <br />9) Crowning: Specifications show a crowning of 1$ to 2B <br />of either side of the road. This was verified. <br />Except for the missing guardrail section, I certify that the <br />Northern #1 Mine Haul Road has been constructed according to <br />the plans previously mentioned. Prudent state-of-the-art <br />has been utilized in the construction and the road should <br />remain free of problems of an engineering or environmental <br />nature. <br />~~ 1~CI,~ <br />C. (Fynq~, Date: ~~J ~ l <br />X0336 <br />