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C- 2010 -088 Fruita Loadout <br />Preliminary Adequacy Review (MLT) <br />22- Nov -2010 <br />Page 3 of 3 <br />6. The typical section for Haul Road #1 shown on Map 15 does not portray the proposed <br />surfacing materials and thicknesses as does the Haul Road #2 section. Please revise the <br />graphic to include materials and thicknesses proposed to surface Haul Road #1. <br />7. Map 21 provides two sections (A -A' and B -B') for the rail spur. Please revise Map 21 to <br />include a typical section which shows the types of materials and thicknesses thereof <br />proposed for construction of the rail spur embankment. <br />8. Map 21 illustrates the profile of the proposed rail spur and loop. The location of the <br />proposed bridge spanning Reed Wash is not shown. Please add this feature to the rail <br />spur profile. <br />Rule 4.03.1 Haul Roads <br />9. Rule 4.03.1(3)(c) requires that the road widths for haul roads shall be appropriate for the <br />anticipated volume of traffic and the nature and speed of vehicles to be used. In the <br />second paragraph of Section 2.05.3(c) and on Map 15, Haul Road #1, which is 0.58 miles <br />in length, is described as having a minimum width of 12 feet. It appears that the road is <br />intended to function as a two -way road, carrying all traffic entering and exiting the <br />Loadout facility, including highway -legal coal haul trucks. The proposed narrow width <br />of Haul Road #1 is insufficient to allow for two -way traffic. Please revise the width to an <br />appropriate dimension which will allow traffic moving in opposing directions to pass <br />safely. The local governing agency, i.e. Mesa County or the City of Fruita, likely has <br />minimum width requirements for two -way roads. <br />10. Page 2.05 -10 describes the proposed methods of haul road construction. What is the type <br />of borrow material to be used to construct embankments? The proposed lift thicknesses <br />of 12" may be too great to achieve the desired compaction, unless the material includes a <br />high percentage of cobble -sized material. AASHTO T99 is appropriate for use with fine - <br />grained soils. However, for road base surfacing, T180 is the preferred method. <br />Miscellaneous Corrections <br />11. Please change the word "aerial" to "areal" in section 2.05.2(2) and in the Clean Coal <br />Storage Pile paragraph on page 2.05 -6. <br />12. Page 2.05 -3 — the section title, "205.3 Operation Plan — Permit Area" is missing from this <br />page. <br />13. Page 2.05 -4 — please delete "Underground Mining" from the title of (2) <br />Please let me know if you require additional information. <br />cc: Sandy Brown, DRMS <br />