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111 <br /> M-2001-001 Line Camp Pit Amendment#2 (Expansion) <br /> Exhibit I. SOILS INFORMATION (6.4.9) <br /> 1. Source(s) of Information: USDA NRCS WebSoilSurvey accessed 15JUL2024 <br /> 2. Task: Provide as high a quality of grassland and ponds as feasible at the end of mining. <br /> 3. Conditions: Given existing land and ponds affected by mining and existing poor-quality irrigated <br /> pasture/cropland <br /> 4. Standards: Manage soil: Preserve and use topsoil, improving its quality, for reclamation around <br /> ponds, while preventing water and wind erosion, air pollution (dust and visible emissions), and <br /> downstream siltation, in accordance with DMRS, USDA, and HDCD requirements. <br /> 5. Performance measures: <br /> a. Strip soil in advance of extraction and other disturbance (roadways, plant and stockpile areas, <br /> etc.) and minimum of 10 feet behind working face. <br /> b. Remove and process/protect an average of 24 inches of soil from surface <br /> c. Screen to remove oversize materials (>2 inches to be added to pitrun materials extracted) <br /> d. Stockpile screened soil and preserve for reclamation or sale. <br /> e. Stockpile in berms to assist in controlling wind erosion, water flow/erosion, visual and noise <br /> impacts. <br /> f. Protect soil in stockpiles/berms by seeding (See Exhibit J). <br /> g. Control weeds as per weed control plan (See Exhibit J). <br /> h. After mining, backfill, and grading, place soil on areas above ponds OHWM to a depth of 12 <br /> inches or more. <br /> 6. Notes: <br /> a. Most of the soil on the site appears to be Apmay and Schrader loam, with only very small areas <br /> of Dalmatian loam and the Ustifluvents soil. There are many areas where cobbles appear on the <br /> surface and throughout the soil profile.There appears to be no value in segregating soil types. <br /> b. Excess soil(estimated at 50%of original quantities)will be available for backfill(including shaping <br /> and grading of shorelines) or sale off-site. <br /> c. Removal of oversize material will improve soil quality and aid revegetation of areas. <br /> d. Primary concern for water erosion under normal conditions is sedimentation of ponds, as there <br /> will be no off-site discharge of water except during 100-year or lesser probability storm events. <br /> e. No "overburden" except clay lenses expected to be found, based on past mining. Clay will be <br /> washed out of crushed and screened product (by wash plant) and used for backfill and shaping <br /> of ponds. <br /> f. BEDROCK: Varies 20-30 feet below surface (and alluvial deposits of the Dolores River) Dakota <br /> Sandstone and Burro Canyon Formation (sandstone, shale and conglomerate). Alluvium will be <br /> generally excavated and used for pit run but sandstone will not. <br /> 5182-22-001 WASTELINE, INC. Page 44 of 65 <br />