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• Additional protection for the fords will be provided to enhance the stability <br />of the running surface by salvaging the gravel on the existing roadbed that <br />will be removed and use it to create a new roadbase on the fords and the <br />slopes created to access the fords. Additional erosion protection for the <br />streambed will be provided by installing rip-rap keys at the upstream and <br />downstream edges of the ford. The keys will be a two foot wide by two <br />foot deep trench filled with one foot top size rip -rap. These rip rap keys <br />will ensure that the fords will not be washed out during high flow . <br />The bridge spanning East Salt Creek on private property near Highway 139 will <br />not be removed. This bridge will protect the streambed yet allow access to the hay <br />fields located east of East Salt Creek. The bridge has been designed to safely pass the <br />flow from a 100 year storm event, see Appendix M. Removing the bridge and <br />regrading the area to install a dry ford would be environmentally detrimental compared <br />to leaving the bridge and approaches intact. <br />3.3.2 Backfillin and Gradin - U er Road <br />~~ <br />An extension of the road on the valley bottom was constructed up the side of the <br />canyon to access the coal outcrop. This portion of the road was reclaimed utilizing a <br />track mounted backhoe, bulldozer, wheel loader, compactor and other ancillary <br />equipment. Material was excavated from the berm and the area immediately <br />downslope of the berm and placed on the road near the toe of the cut slopes to <br />eliminate the road and create a transitional slope between the creek bottom and the <br />steeper natural slopes. As the material was placed at the toe, it was graded into two <br />foot deep lifts, watered as necessary and compacted. In areas where ephemeral <br />drainages crossed the road, the material was excavated with a track mounted backhoe <br />and moved into place with the dozer to reconfigure the drainage. <br />Drainages were reestablished and culverts removed. The premining drainages <br />crossing the road were excavated to approximate the original channel shape and lined <br />with riprap to provide a stable channel. <br />TR-23 3-7 12/07 <br />