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<br />-36- <br /> <br />storage of coal at the facility to 2,000 tons. Salt Creek l9ining Company :oust <br />adhere to this limit, except when specific approval is given by the ;Mesa County <br />Commissioners, allowing greater storage on an interim basis. The site was <br />previously used as a storage and loading site for sugar beets. <br />The applicant is in compliance with the requirements of this section. <br />XX. Roads - Rules 2.05.3(31 and 4.03 <br />Road Construction <br />Information dealing with road design and construction for the ,NUn per Canyon Mine <br />is located in Section 2.2.2 of Volurr I and Appendix 0 of Volume v of the <br />application. This material has been reviewed by the Division for compliance <br />with the Rules and Regulations. <br /> The proposed haul road for the Munger Canyon nine is approximately 2 miles in <br /> length. This road follows the alignment of an existing pioneer road excavated <br /> in 1977. This road, as the applicant observes, can be divided into two distinct <br /> design segments. The lower segment connects State Highway No. Z39 (Sta. 0+00') <br /> and the confluence of the Plunger Creek Canyon with the canyon of the unnamed <br /> tributary to Munger Creek on which tSe portals are located (Sta. 67+00`). This <br /> segment occupies'the relatively broad canyon floor at a fairly Zow gradient <br /> (2.6~). The majority of this segment consists of a Iow constructed road berm. <br /> The upper segment of the haul road connects the confluence of the two stream <br /> valleys (Sta. 6i+00') with the mine portal bench (Sta. 140+30'). This roughly <br /> 3700 foot Iong segment climbs at a steeper gradient (7.5~) along the southern <br /> valley wall of the valley of the unnamed tributary to !•Mnger Creek. The <br /> southern wall of this canyon is steep, with cross-sect_oas in excess of 30°, <br /> obviously qualifying as a "steep slope mining area". In order to straighten the <br /> alignment of the existing pioneer road to accommodate larger coal hauling <br /> vehicles, t.9e applicant proposes to enlarge existing road cuts and construct <br /> road berms across several drainage swales. <br />In response to comments made by the Division in its Preliminary adequacy Review, <br />Salt Creek ,~;ini.ng Company has submitted a geotechnical analysis and amended <br />design recormnendat;ons for the proposed haul road. This report, prepared by <br />Geo-Hydro Consultants, Inc. contains geotechnical conclusions regarding the <br />stability of the proposed haul road corridor and reccmmendatiens for the construction <br />of necessary toad cuts and road fill embankments. The consultant's methodology <br />consists basical_'y of geological mapping of the affected area and observation of <br />the performance of cuts adjoining [he existing pioneer toad, which was constructed <br />rouchly -t Sears prior to ~`us investigation. <br />The geotechnical investigation deter-lined that ?our basic soi_' or rock types ate <br />encountered along the toad's alignment. t9hile ,o .najor or deep-seated landslides <br />::eve occJrted along the pioneer road, some shallow sloughing has tccutred. <br />3y observine the cut slope Gradients is areas of slovchi.ng sod cottelati,:? =:ese <br />~bservatiors :rich tie `our characteracic material types encountered, t.ae <br />applicant's consultant has developed reco,:vre.^.dscions _scardiro the .naxi.~u:n stable <br />• ^_.t slope gtadierts 'or each characteristic ,nateria' type (see "s:;ia ?.2-? of c7e <br />appi_cat_on1. The ccnsuitsnt's met`:edcleay _ sound _. kis aralusis. <br />