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drainage channel as well as a very narrow adjacent drainageway bottomland that may <br />include possible wetlands in a few very small areas. It also includes two very narrow, <br />equally incised, ephemeral drainageway tributaries that extend northeast up the canyon <br />that contains the main portal for the McClane Canyon Mine. Typical soils for East Salt <br />Creek include undifferentiated Ustic Torrifluvents, which are mainly well drained, variable - <br />textured drainage soils with evident stratification. Because East Salt Creek is not projected <br />to be disturbed by project activities, neither a soil suitability evaluation nor a proposed <br />salvage depth recommendation was developed. <br />3.5 Map Unit DL: Disturbed Land <br />Map Unit DL (Disturbed Land) is delineated on a few existing disturbed areas associated <br />with the current mining, as well as on the current access/haul road corridor. One of the <br />delineations includes an existing Topsoil Storage Pile but this soil is intended for use in <br />future reclamation of existing mining disturbances. There is no additional soil available for <br />salvage from Map Unit DL (Disturbed Land). <br />3.6 Soil Substratum Composite Samples MC21C and MC22C <br />Two representative sites, MC21 in Map Unit H, and MC22 in Map Unit I, were selected for <br />composite sampling of the 2 foot to 8 foot depth interval (24 to 96 inches). These two <br />composite samples, MC21C and MC22C, were analyzed at IML for standard overburden <br />parameters although the material was clearly soil and not weathered bedrock overburden. <br />Laboratory results are attached to this report. Results indicate that all parameters are <br />"suitable" (WDEQ, 1996) for both samples except SAR (23.4) of MC22C. This exceeds the <br />suitability threshold of SAR 15 but is similar to high SAR values for lower soil substratum <br />samples of MC22 (SAR=26.9 for 40-60", and SAR=28.1 for 60-96"), and MC24 (SAR=29.0 <br />for 40-60", and SAR=34.7 for 60-96"). This lower soil substratum material was not <br />recommended for soil salvage. A single unsuitable parameter is not sufficient to consider <br />all of composite sample MC22C unsuitable. The sample is dominantly suitable and an <br />SAR of 23.4 is not a major limiting problem. In Wyoming DEQ District 2 (SW Wyoming), <br />soil and overburden material with SAR up to 30 in certain cases is considered suitable for <br />salvage and use in reclamation (Moxley, 2008). <br />-14- <br />