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<br />• SOILS AND VEGETATION <br />INVENTORY AND EVALUATION OF THE <br />CAMILLETTI MILNER PIT # 2 <br />INTRODUCTION <br />This Inventory and Evaluation of the Proposed Camilletti Milner Pit # 2 have been <br />prepared in connection with the proposed Routt County Special Use Permit Application <br />which will soon be filed with the Routt County Planning Department and the Colorado <br />Mined Land Reclamation Division in connection with the necessary mining and <br />reclamation plans which are required to operate a gravel pit in Routt County, Colorado. <br />The format of this document follows that used by the Routt County Soil Conservation <br />District and the USDA Natural Resource Conservation Service (NRCS), for numerous <br />other gravel pits which have been permitted in this immediate area. This report has <br />been prepared by IME, the Applicant's Permitting Agent for this project due to the fact <br />that the time constraints of the NRCS did not allow them to prepare this document on a <br />timely basis. <br />SOILS <br />The attached soils map of the site, which has been taken from the Milner USGS Map <br />showing the soils mapping for this site, which is on file in the offices of the Natural <br />Resource Conservation Service Office in Steamboat Springs, shows that there are two <br />soils mapping units on the proposed mine area. Soils mapping unit 52A, which <br />corresponds to the Menbar Loam, 0 to 3 Percent Slopes, soils mapping unit and <br />Mapping Unit # X25A, which corresponds to the Matmore-Becks Complex, 0 to 3 <br />Percent Slopes, soils mapping unit. <br />• Soils Mapping Unit Descriptions. <br />X25A-Matmore-Becks Complex, 0 to 3 Percent Slopes. This soils mapping unit is on <br />stream terraces and flood plains. Elevation is 6,300 to 6,800 feet. The average annual <br />precipitation is 18 to 25 inches, the average annual air temperature is 37 to 40 degrees <br />F, and the average frost-free period is 40 to 65 days. <br />This unit is 60 percent Matmore Variant soil and 30 percent Becks Variant soil. The <br />components of this unit are so intricately intermingled that it was not practicable to map <br />them separately at the scale used. <br />Included in this unit are small areas of Silas Variant soils and Aquents-Aquolls soils. <br />Also included in this unit are areas adjacent to the stream which have a common flood <br />hazard. <br />The Matmore Variant soil is deep and somewhat poorly drained. It formed in alluvium <br />derived from mixed sources. Typically, the upper 11 inches of the surface layer is dark <br />grayish brown loam. The next 6 inches are dark grayish brown sandy loam. The lower 7 <br />inches are grayish brown loam. The upper 5 inches of the underlying material is grayish <br />brown sandy loam. The lower 7 inches are grayish brown loam. The upper 5 inches of <br />the underlying material is grayish brown sandy loam. The lower part to a depth of 60 <br />inches or more is light yellowish brown extremely gravelly sand. The depth fo sand and <br />gravel ranges from 26 to 40 inches. <br />Permeability of the Matmore Variant soil is moderate to a depth of 28 inches and rapid <br />• below this depth. Available water holding capacity is low. Effective rooting depth is 60 <br />76 <br />