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<br /> INTRODUCTION <br />~~ <br /> This soil inventory was conducted by VTN and by the environmental <br /> engineer employed by Yampa Mining Co. who is a soil scientist. Much of <br /> the soil classification and mapping was done by the Sail Conservation <br /> Service (SCS). VTN Colorado, Inc. and the environmental engineer at <br /> Yampa Mining Co. conducted some of the soil de scriptions and mapping and <br /> all of the soil sampling and interpretation. The soil samples taken by VTN <br /> were tested by Colorado Analytical Labs and the samples taken by the <br /> environmental engineer at Yampa Mining Co. were tested by Camp, Dresser <br /> and McKee Inc. <br />METHODS <br />_.____ Soil maps of the area were obtained from the Soil Conservation Service in <br />Craig and Steamboat Springs, CO. SCS descriptions .and interpretations <br />are in the appendix. Sample locations were selected by considering aspect, <br />slope, vegetation, and previous classification by SCS. Sample sites were <br />excavated by a backhoe and were dug to a depth of 152 cm (60 in.) or to <br />) bedrock. Soil profiles were examined and described according. to USDA <br />Handbook No. 436, Soil_ Taxonomy, 1975. Each soil profile was sampled <br />(for example, A1, B1, B2t, B3, Cca) and upper horizons were sampled <br />more intensely than the lower horizons reflecting the importance of the A <br />horizon as topsoil material for reclamation. Soils were tested for the follow- <br />ing parameters in accordance with state and federal requirements. <br />1. pH, paste <br />2. Electrical Conductivity (mmhos/cm) <br />3. Moisture Saturation ($) <br />4. Sodium, Calcium, and Magnesium, paste (meg/1) <br />5. Sodium Adsorption Ratio (SAR) <br />6. Organic matter ($) <br />7. Phosphorus (available) (ppm) - <br />8. Potassium (avai]able) (ppm) <br />9. Particle size distribution <br />(., <br />