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MW-4 <br /> Monitoring Well Cluster MW-4 is located on the edge of a mesa and may encounter <br /> Pulpit Loam (USDA Map Unit 56) and Lazear Rock Outcrop Complex (USDA Map Unit <br /> 42) <br /> Both of these soils have been discussed above. <br /> MW-HGA-4 <br /> The Big Blue clay loam soil type is located within the alluvial deposition of Hay <br /> Gulch, and is derived from adjacent sediment with a shale parent material (USDA <br /> Map Unit 13). The Soil Survey of La Plata County Area describes the typical pedon as <br /> ine-textured, with a dark gray clay loam 4" thick, underlain by a very dark gray silty <br /> clay approximately 6" in thickness. Underlying material is silty clay to 60". <br /> Underlying material may exhibit gleying and mottles indicative of slow permeability. <br /> Excavation to Locate the Coal Seam Outcrop Along the East Side Slope <br /> Anticipated minor excavation to locate the coal seam outcrop along the east side <br /> slope above the stacker and south edge of the topsoil pile would be located within the <br /> Archuleta-Sanchez soil map unit. This soil is a shallow stony loam with limited <br /> stratum development. Excavation of the shallow A horizon of this soil with <br /> replacement after project completion should not result in significant adverse impacts <br /> to the soil. This soil was sampled and analyzed, with results in Appendix 6(2) of the <br /> permit document; sample designation AS 1. Please see Savage and Savage, Inc. <br /> memo, Baseline Soil & Vegetation Survey Boundaries and Extent, December 11, 2019 <br /> at Appendix 7(2) for further discussion and a boundary and extent image of the <br /> survey area. <br /> To minimize post-project effects, it is recommended that the top layer of soil be <br /> replaced and lightly compacted. Application of a light straw mulch (less than one ton <br /> per acre rate) or harvested plant material (twigs, wood chips, pine needles or other <br /> native organic material) is recommended, give the general slope of the project area. <br /> Reseeding of the disturbance with the approved seed mix should follow. <br /> GCC Energy, LLC King II Mine <br /> Section 2.04.9 <br /> Page 5 January 15, 2020 (MR-50 PAR) <br />