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Permit Amendment — Cemex Sandstone Quarry <br />Appendix 13-1: Soil Map Unit Descriptions <br />BALLER SERIES <br />The Bailer series consists of shallow, well drained soils that formed in material weathered from <br />sandstone. Bailer soils are on upland hills and ridges and have slopes of 2 to 30 percent. The <br />mean annual precipitation is about 18 inches and the mean annual air temperature is about 48 <br />degrees F. <br />TAXONOMIC CLASS: Loamy - skeletal, mixed, superactive, mesic Lithic Haplustolls <br />TYPICAL PEDON: Bailer very stony fine sandy loam, grassland. (Colors are for dry soil unless <br />otherwise noted.) <br />A1- -0 to 10 inches; grayish brown (10YR 5/2) very stony fine sandy loam, very dark grayish <br />brown (10YR 3/2) moist; moderate fine granular structure; soft, very friable; 50 percent stones <br />and cobbles, mostly sandstone; neutral (pH 7.0); clear smooth boundary. (6 to 20 inches thick) <br />C - -10 to 15 inches; light brownish gray (10YR 6/2) very stony fine sandy loam, dark grayish <br />brown (10YR 4/2) moist; massive; slightly hard, very friable; 60 percent stones and cobbles, <br />mostly sandstone; neutral (pH 7.0); abrupt smooth boundary. (0 to 14 inches thick) <br />R - -15 inches; noncalcareous hard sandstone. <br />TYPE LOCATION: Boulder County, Colorado; approximately 1,000 feet south and 1,500 feet <br />west of the NE corner of Sec. 7, T. 2 N., R. 70 W. <br />RANGE IN CHARACTERISTICS: The mollic epipedon is 7 to 20 inches thick and depth to the <br />lithic contact ranges from 10 to 20 inches. Organic carbon ranges from .7 to about 2 percent in <br />the mollic epipedon and decreases uniformly with increasing depth. The soil is 80 to 100 <br />percent base saturated. The matrix material of the control section is typically fine sandy loam <br />but clay ranges from 5 to 18 percent, silt from 5 to 35 percent, and sand from 52 to 80 percent <br />with more than 35 percent fine sand or coarser. Rock fragments range from 35 to about 75 <br />percent by volume and consist mainly of stones and cobbles. The mean annual soil temperature <br />ranges from 47 to 58 degrees F and mean summer soil temperature ranges from 59 to 72 <br />degrees F. The time the soil temperature at depths of 20 inches is 41 degrees F or higher <br />ranges from about 230 to 305 days. Cumulative time the soil is moist in some part of the <br />moisture control section and soil temperature at depths of 20 inches is 41 degrees F or higher <br />ranges from about 56 to 152 days. <br />The A horizon has hue of 5Y through 7.5YR, value of 4 or 5 dry, 2 or 3 moist, and chroma of 2 <br />or 3. It is slightly acid to mildly alkaline (pH 6.1 to 7.8). This horizon usually has fine granular <br />structure but it has subangular blocky structure in some pedons. It is soft or slightly hard. <br />The C horizon has hue of 5Y through 7.5YR. It is slightly acid to mildly alkaline (pH 6.1 to 7.8). <br />This horizon is generally noncalcareous but is inconsistently calcareous in the few inches <br />immediately above the bedrock in some pedons. This horizon is absent in some pedons and the <br />mollic epipedon extends to the bedrock. <br />Exhibit B B -5 March 2014 <br />