2021-10-29_PERMIT FILE - M2021064 (6)

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EXHIBIT I — Soils Information 1. Source(s)of Information: USDA Soil Survey of Parts of Archuleta Hinsdale, Mineral and Rio Grande Counties), issued 2006 and available online at WebSoilSurvey, accessed September 2021.7 USFS Environmental Assessment, 2012. 2. Significant concerns in soils management: Prevention of water and wind erosion, and downstream siltation. a. Most of the area to be affected by mining is classified as the Pagosa loam with 15%inclusion of minor components(Winnifred clay,Woodrock silt loam and Hunchback clay loam). b.The rest of the area contains Cora Silt Loam with 10%inclusion of minor components(Winifred clay, Carracas loam, and rock outcrops of shale and sandstone). c. None of these soils are considered to qualify lands for exceptional farmland or similar status. 3. Reclamation seed mix as proposed is based on NRCS and/or Extension Service recommendations. Seed mix for temporary stabilization and permanent reclamation are discussed in Exhibits E and J. Method of application: Standard agricultural seeding technique as detailed in Exhibit J. 4. The soils map is drawn from the soil survey and on-line data. a. Scale of mapping precludes some soil types from being shown, as does the terrain and dense forest conditions. b. Soils on site are in part derived from colluvium and alluvium (including likely glacial till), landslide deposits, and mostly NOT from the basement Mancos shale. But at least two acres(unmapped)of soil derived from Mancos shale has been identified on the site in the past., probably inclusions of Winifred clay. 5. The soils descriptions provided in Table B-2-1 are taken from the Survey. Field surveys have confirmed the general accuracy of the mapping. This is typical for the Pagosa Springs area. 6. Soil stripping, storage, and replacement: a. For planning purposes and based on past operations, it is assumed that an average of 3 feet of material will be removed including 3 inches of topsoil and 33 inches of overburden. b. In all areas where soil is removed,the following will be done as much as possible: • As much as possible, remove,stockpile and preserve the upper 36 inches of soil/overburden,segregating the upper 2-6 inches(average 3)as topsoil. • If necessary, screen the larger cobbles from material prior to placement in the final location and process for construction materials. Although larger stones appear relatively rare in the upper 3 feet,this may be necessary either before stockpiling or before placement. • Separate and chip/mulch/compost larger vegetable matter(3-inch diameter or larger)from overburden/soil. • Place overburden to a depth of at least 12 inches for reclamation as part of the rooting zone. The objective is to provide as high a quality grazing land as feasible at the end of mining activities. The entire soil description and physical properties and uses are available on the Web Soil Survey. 7 Available on-line: C&J Gravel Products, Inc. Page 43 of 93 20 OCT 2021 Application for Permit: Oakbrush Hill Gravel M-2021- C&J-DPR-V5-001