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C~ <br />Soils Report for The Rockcastle Mine <br />A soil survey encompassing the permit area of The Rockcastle Mine <br />was conducted by TACA Corporation during the first week of September, <br />1980. Afield sheet and legend were provided by Mr. Darryl Shroeder, <br />soil survey party leader for the Soil Conservation Service in Routt <br />County. The map unit descriptions and symbols used in this report are <br />those of the SCS with a few minor modifications. Profile descriptions <br />and topsoil depth determinations are specific to the sampling locations <br />reported herein and which are shorn on the soils map accompanying this <br />report. <br />An initial two days were spent by surveyors in reconnaissance of <br />the area. Numerous test borings were made with a four inch diameter cup <br />• auger driven by hand to confirm and verify the SCS field sheet and map <br />unit descriptions. Ea some instances the SCS information was considered <br />to be in error. These discrepancies have been rectified in this report. <br />During the last two days in the field the soils were mapped onto a recent <br />composite high contrast aerial photograph of scale 1:4,800. Sampling lo- <br />cations were chosen representing at least one relatively typical site for <br />each soil mapping unit proposed for disturbance by continued mining. Some <br />of the more widespread soils were sampled and described at more than one <br />location. <br />Samples were collected for laboratory analyses at each sampling lo- <br />cation using either a ti le spade or the aforementioned cup augcr. Samples <br />were taken at different increments of depth at each location depending on <br />the particular profile. Zn practice, samples represent a composite of <br />material taken from respective horizons of several holes made in the vici- <br />nity of each sampling location noted on the map. This is true except for <br />a few of the deepest samples for which it was very difficult to bring <br />material all the way to the surface in the auger because it was so dry it <br />• kept falling fmm the cup back to the bottom of the hole. This was not <br />taken to be a serious compromise of sampling protocol. <br />II.I-3 <br />