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Page three Letter to Ms. Carol Pahlke, • Messrs. Larry Larson and Ron Naten Re: Kerr North Expansion April 30, 1980 B. Baseline Soils Data - Tipple Site: Because the en- tire tipple site has already been disturbed, KCC will be unable to conduct meaningful soil surveys or sampling baseline programs at this time. KCC will, however, endeavor to gather whatever historical information is available from the SCS or other appro- priate sources with respect to the tipple site. C. Alluvial Valley Floor Analysis - Soils Considerations: KCC will conduct soil surveys in Bush, Williams and Sudduth Draws for the length of those draws through and from the permit area to the Canadian River, taking into account factors enumerated in OSM's Alluvial Valley Floor Guidelines. In addition KCC will endeavor to develop further soil survey information with respect to the suspected alluvial valley floor features of the Canadian River floodplain. II. VEGETATION A. Baseline Vegetation Data - Mine Site: KCC has iden- tified five separate vegetation types located on the proposed Kerr North Expansion Area. These types are: • 1. Big Sagebrush; 2. Low Sagebrush; 3. Treated Sagebrush; 4. Drainage Bottom; 5. Salt Flat (includes less than 6 acres and will accordingly be in the Big Sagebrush type). The locations of these veget on the accompanying map entitled "Kerr Map". B. Vegetation Reference Areas: ference area for each vegetation type. will be used to verify reference areas type and identical sampling procedures pre-mine and post-mine studies. stion types are depicted Coal Company Vegetation KCC will identify a re- A statistical T-Test for each vegetation will be used for all C. Vegetation Sampling Procedures: KCC will identify sampling points on a random basis using a numbered grid system. From those sampling points 50 meter transects will be randomly oriented prior to the actual commencement of field work. •