Laserfiche WebLink
tie back distance. Only the required surface area is given. Since the silt fence and straw <br />bales are part of a designed structure, please revise the Sedcad designs to show the <br />construction requirements for the silt fence and straw bales. <br />The Division has no further concerns. In the submittal dated November 26, 2008, Oxbow <br />provided the dimensions for the straw bale sediment control structures. <br />9. Please add a notation in the legend for Map 2.05-El-BCA2 that explains the use of <br />yellow color to designate small area exemption areas. <br />The small area exemptions on Map 2.05-E1-BCA2 have been labeled. However, as noted <br />in item number 3 above, the Division is requesting that all disturbed areas be designed as <br />SAEs, including the inlet and outlet disturbed areas for Bear Creek culvert BCC-1 and <br />the cut slope just east of the fan pad. <br />10. No entry road is designated on Map 2.05-El-BCA2. Please explain how the fan site will <br />be accessed from the Bear Creek ranch road and whether or not a road culvert will be <br />needed. <br />The Division has no further concerns. The November 26, 2008 submittal contained a <br />revised facilities plan in which a light use road will be used for access to the fan site. <br />11. Map 2.05-El-BCA2 does not show how the lay down area will be accessed. Please <br />explain if a road will be needed and whether this road will require a road culvert in the <br />small drainage just north of the lay down area. <br />The Division has no further concerns. A light use road/access ramp for the laydown area <br />is being proposed in the November 26, 2008 submittal. Oxbow proposes to make <br />drainage channel BCCD-1 into a swale where the ditch crosses the light use road. <br />12. In comparing the existing topography shown on Map 2.05-El -BCAI with the proposed <br />post mining topography shown on Map 2.05-M6, it appears that there is an area just to <br />the north of the lay down area that will be disturbed. However, this area does not appear <br />to be designated as disturbed on Map 2.05-El-BCA2. Please explain. <br />In their November 26, 2008 submittal, Oxbow responded that the post mine topography <br />area in question covers the laydown area. The Division still has a question about this <br />issue, so will approach it in a different way. <br />Comparison of the contour lines on Drawing 2.05-E1-BCA1, "Existing Conditions", with <br />those on Drawing 2.05-E1-BCA2, "Facilities Layout", shows that no grading of the <br />laydown area is proposed. However, referring to the contour lines shown on Drawing <br />2.05-M6, Sheet 7 of 7, "Facility Post Mine Topography", it appears that there will be <br />regrading of the laydown area and the area just east and north of the laydown area after <br />operations cease and the area is reclaimed. Please explain why the post mine topography <br />4