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Mike Boulay <br />after placement of pit run, the road appears to 'pump' with heavy vehicle traffic, <br />more pit run will be added until a stable foundation is formed. Twelve inches <br />minimum pit run has been specified, additional pit run could be added if required <br />by on -site conditions. <br />Division Response: CAM has adjusted the Pit Run thickness to be 12" minimum <br />for constructing Haul Roads #1 and #2, and states that more pit run will be added <br />if necessary to achieve stability. The cover letter response to this item indicates <br />that the City of Fruita Engineer requires only that "improvements are in place to <br />structurally support the amount of truck traffic proposed." CAM indicates that the <br />section shown here is based upon haul roads constructed at other mines and <br />used by similar trucks, with similar weights and volumes. <br />CAM is correct that there is no particular standard that must be followed for haul <br />road construction. However, for roadways used by the traveling public, <br />pavement sections (including one or more types of road base) are typically <br />designed using AASHTO (American Association of State Highway and <br />Transportation Officials) procedures or modifications thereof. Pavement <br />thicknesses will vary depending upon the native soils, climate, type of road base <br />and /or pavement, type and volume of traffic, and the desired lifespan of the <br />roadway. These same methods and parameters can also be utilized haul roads, <br />particularly where the haul trucks are commercial, over - the -road vehicles. <br />CAM's proposed minimum thickness design for this project, with additional <br />materials to be added as necessary, will probably suffice, given the relatively <br />short haul road lengths. <br />This portion of the item is resolved. Please incorporate the comments from <br />the City of Fruita Engineer into the PAP. <br />CAM - Please see revised page 2.05 -13. <br />51b. Item resolved. <br />-11- August 19, 2011 <br />51c. Page 2.05 -13, Haul Road Maintenance, mentions road shoulders (none are <br />currently proposed, but possibly should be) and paved surface (none proposed). <br />Please review this paragraph to ensure it accurately describes what is proposed. <br />CAM - Text about road shoulders and pavement was removed from page 2.05 -13. <br />Division Response: Text regarding road shoulders and pavement was removed <br />from page 2.05 -13. This portion of the item is resolved. <br />There is language in paragraph (c) on page 2.05 -8 that is inconsistent with haul <br />road designs described elsewhere in the permit. Please revise paragraph (c) <br />