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Westside Gravel <br />Adequacy Review <br />Pp #8: Exhibit C-D is included in this package which shows mining topography of Phases 3, 4 and 5. <br />Pp #g: Revised maps identify the progression of mining within each phase with "direction of mining" <br />arrows. <br />Pp #lO:The access road is shown on the revised mops with access to all phases of mining. The <br />access road would be built and reclaimed as necessitated by the phase of mining activity. I.e. The <br />access road to phases 3 & 4 would be built just prior to mining activity for phase #3 and would be <br />reclaimed in conjunction with phase #4. <br />Pp #11: Mining activity will not affect the bottom of the gulch. A minimum of 10 feet each side of <br />the bottom of the gulch will be delineated as'unaffected area". <br />Pp #12:Stormwater control structures are shown on the revised mining maps. Stormwater control <br />will consist primarily of berms along the outer margins of the pit benches. When the access road is <br />installed to phases 3 d 4, a 48" cmp will be installed, with appropriate Stormwater controls as shown <br />on enclosure 2. <br />Exhibit D -Mining Plan <br />Pp #1: The stated 12 to 50 feet mining depth was intended to be the depth from existing ground <br />elevation to the lower limits of mining at any one point in the permitted area. At no time will mining <br />occur at the bottom of the gulch. Exhibits C-C and C-D more clearly define the anticipated depths <br />of mining within the phases. <br />Pp#2: Exhibit C-D, revised, shows the intended haul road and culvert for access to Phases 3 6 4. <br />The 48" cmp will be installed in compliance with the current Colorado Department of Transportation <br />specifications. Stormwater erosion controls will be installed as shown on Enclosure 2 of this <br />submittal. <br />Pp#3: Interim slopes during mining will be ns steep as 1.5:1 with each phase homing n maximum slope <br />of 3:1 prior to reclamation activities. It is anticipated that the 3:1 perimeter slopes will be created <br />primarily by pushing all material down at a constant 3:1 and then plating with reject material, <br />overburden and topsoil. <br />Pp #4: It is intended that the topsoil and overburden will be stripped, stockpiled, stored and <br />replaced separately in each phase of mining. The revised minirx~ plans show locations of the <br />stockpiles for each phase of mining activity. <br />Pp #5: The range of depths previously stated incorrectly inferred that the 4° to 12" range was for <br />a combination of overburden and topsoil. This range was intended to be for the topsoil alone. from <br />the NRCS soil survey information and the site inspections we also anticipate being able to replace <br />the topsoil at a depth greater than 4°. However, we do not want to commit to a depth that could <br />possibly lead to having to purchase topsoil to meet the requirements. The existing canyon slopes <br />currently have little or no overburden or topsoil on them. We do anticipate that the carryon rim <br />Page 2 of 5 <br />