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The hydrologic model for the mine site was run using a 1 hour <br />' storm distribution with 2.5 inches of rain. The results of the <br />run closely resembled the actual end result of the storm <br />experienced. Basically the mine site drainage functioned as <br />designed for the storm event encountered. Material washed down <br />from slopes above bloc~etl the drainage path in some areas <br />resulting in flow over the adjacent berm and down the slope. This <br />occurred accross natual slopes as well as disturbed slopes. The <br />North Spoil Area should be graded and maintained to force run-off <br />to drain *.o the access road. The pile can be graded away from the <br />high wall and out slope to form a Swale leading to the access <br />road. <br />A storm of the intensity experienced is well beyond the <br />parameters for the drainage de=_ion of the mine site. <br />Sinc 1LiL^%'/~~ ~ i <br />~ '%zy//TU/f/ <br />La ence G. White P.E. <br />xc: Twin Pines Investment <br />f?S, /~ELEI/c/> ACniiFl~cw~~mavs oFF~/6/,ccEar/Nfl,aumu~aQ~~.(P„r~Bowr.~.u~ <br />Sf!/7A/fi ~A1 %r~c'/DD/~ ©~ /?. ~?, js.c /~ /?IJ~'.~. %1cY ~~~/is3T~l~ 39Ct7aF~ <br /> <br /> <br />