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Colowyo, C1981 -019, PR3 adequacy No. 3 <br />July 22, 2011 <br />Please provide a clear narrative (kith accompanying details on the maps. as appropriate) of the <br />proposed process: from excavation of the Sump, through mining of Little Collom X Pit. <br />phased construction of the temporary spoil pile, backfill of the Little Collom X Pit, and final <br />reclamation. <br />Rule 2 05 3(3)(e) Mine Facilities -Roads and 4.03 Haul Roads and Access Roads <br />A set of three (West, Central, and East) haul roads are proposed to connect the Collom Lite <br />area with the proposed excess spoil pile. The roads are illustrated on Map 25D, and described <br />in Rule 2, Page 94 and Rule 4, Page 2. <br />a. Map 25D shows one site - specific cross section for each of the haul roads (at Sta. <br />25 +00). However, no Typical Section has been provided. Please insert a "typical <br />section" on Map 25D, at an appropriate scale, which illustrates the roadway width and <br />cross slope, ditch dimensions, and proposed slopes for both cut and fill situations. <br />\ Haul Ro.rd t�pi<al -CCtI, n it, ALy 's1) �,illi the Alanli i .v:,. h.m r <br />b. Note 10 of the Design and Construction Notes on Map 25D addresses the requirements <br />of road embankments [per 4.03.1(3)(e)]. The text here should be modified to include <br />specific language addressing the requirements of (e)(ii) regarding construction on slopes <br />steeper than 20% (also, will this situation occur?) and (e)(iv) which prohibits the use of <br />acid - producing materials in embankment construction. Please expand the information <br />in Note 10 accordingly. <br />Note 10 %�n5 rep ISed _t,a requested rrilh the Mal Ch respunne. Item is resolred. <br />2. Another haul road (Collom Access Road) is proposed to provide access from the primary <br />crusher to the Gossard loadout facility. This road will be approximately 6 miles long; the <br />surface is divided between a 24' paved surface for vehicle use and a 73' gravel section for the <br />haul trucks. Details are provided on Map 25E, Sheets I — 9, and described on Rule 2, pp 93 -94 <br />and Rule 4, Page 2. Construction Note 10 on Sheet 3 of Map 25E addresses the requirements <br />of road embankments [per 4.03.1(3)(e)]. Please revise the text to include specific language <br />addressing the requirements of (e)(ii) regarding construction on slopes steeper than 20% (also, <br />will this situation occur?) and (e)(iv) which prohibits the use of acid - producing materials in <br />embankment construction. <br />Note 10 or Sheet? of,Alap E r� a, roe i.ed us reque <ICd a ith the Alards rc +ponsc- Slopes <br />,tecpo rlmn �H:IA kill be identical. delineated. and eN _ducted prior to construc(ion. Item is <br />re, <o h cd. <br />3. One access road is proposed to provide access to the Little Collom Pond. The road will be <br />constructed along the alignment of an existing two -track road. Details are illustrated on Exhibit <br />25, Item 1, Figure 1 and described on Rule 2, Page 94 and Rule 4, Page 2. 1 have no comments <br />regarding the design and construction of this road. <br />\o r"j)"'I c ,cas required. <br />