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D-3 <br /> pit floor and sideslopes), to be followed by appropriate seed application, as discussed in sub-section (c), <br /> below. <br /> (c) Revegetation Plan <br /> (i) Thickness and Viability of Replacement Growth Medium <br /> The planned replacement thickness for growth medium is virtually equivalent to that removed during pre- <br /> stripping activities, that being a nominal 12-inches as the objective. However, due to localized surface <br /> irregularities, etc., CSC anticipates that replacement thickness may vary, but remain within the targeted <br /> objective of 8- to 12-inches minimum. <br /> Existing root zones, plants, and other organic materials will be recovered during the pre-stripping activities. <br /> The surficial soils currently serve as a viable growth medium for rangeland purposes. The anticipated duration <br /> of stockpile storage will be less than a full season, so the likelihood of the material retaining its characteristics <br /> as an adequate and viable growth medium(after replacement) should be retained. <br /> Soil sampling has been completed(Refer to Exhibit B: Site Description)utilizing a series of shallow borings. <br /> Surficial soils in the 0 to 12-inch depth horizon within the Permit Area are consistent with that same depth <br /> profile throughout the immediately surrounding area. No soil amendment or nutrient addition is planned as <br /> residual plant materials will remain present within the stockpiled material; and, straw crimping will be <br /> employed during the seeding process, as discussed below. <br /> (ii) Seedbed Preparation and Timing of Seeding <br /> Due to the limited size of the disturbed area and the short duration of the planned mining activities, all <br /> reclamation activities will be deferred until mining and processing activities are completed and all structures <br /> and other equipment are removed from the site. <br /> Keenesburg Project—Limited Impact 110 Application_May 24,2019 <br />