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Do we Flats Quarry Soils and Geology Report <br /> MANVEL SERIES <br /> The Manvel series consists of very deep, well drained soils that formed in alluvium derived from <br /> soft limestone and shale. Manvel soils are on fans, plains, and interfluves. Slopes range from 0 to <br /> 15 percent. The mean annual precipitation is about 305 mm (12 inches) and the mean annual <br /> temperature is about 11 degrees C. (52 degrees F.). <br /> TAXONOMIC CLASS: Fine-silty, mixed, superactive, mesic Ustic Haplocalcids <br /> TYPICAL PEDON: Manvel silt loam, grassland. (Colors are for dry soil unless otherwise <br /> noted). <br /> A--0 to 18 centimeters (0 to 7 inches); brown (10YR 5/3) silt loam, brown (IOYR 4/3), moist; <br /> weak fine granular structure; soft, friable, nonsticky and nonplastic; common fine and very fine <br /> roots; strongly effervescent, 5 percent calcium carbonate equivalent; slightly alkaline (pH 7.6); <br /> clear smooth boundary (8 to 18 cm (3 to 7 inches) thick). <br /> Bkl--18 to 64 centimeters (7 to 25 inches); pale brown (10YR 6/3) silt loam,yellowish brown <br /> (IOYR 5/4) moist; moderate medium subangular blocky structure; moderately hard, friable, <br /> slightly sticky and slightly plastic; common fine and very fine roots; 2 percent medium distinct <br /> irregular carbonate masses in matrix; violently effervescent, 20 percent calcium carbonate <br /> equivalent; moderately alkaline (pH 8.2); clear smooth boundary. (20 to 51 cm (8 to 20 inches) <br /> thick) <br /> Bk2--64 to 124 centimeters 25 to 49 inches; pale brown (10YR 6/3) silt loam, yellowish brown <br /> (10YR 5/4), moist; moderate fine prismatic structure; moderately hard, friable, slightly sticky <br /> and slightly plastic; few very fine roots; 8 percent medium distinct irregular carbonate masses in <br /> matrix; violent effervescence, 13 percent calcium carbonate equivalent; moderately alkaline (pH <br /> 8.2); gradual wavy boundary. (48 to 76 cm (19 to 30 inches) thick) <br /> Bk3--124 to 200 centimeters (49 to 79 inches); very pale brown (10YR 7/4) silt loam, brownish <br /> yellow (10YR 6/6), moist; weak coarse subangular blocky structure; moderately hard, friable, <br /> slightly sticky and slightly plastic; 2 percent fine distinct irregular carbonate masses in matrix; <br /> violent effervescence, 35 percent calcium carbonate equivalent; moderately alkaline (pH 8.4). <br /> TYPE LOCATION: Pueblo County, Colorado about 14 miles south of Boone, Colorado; 1,550 <br /> feet east and 900 feet north of the SW corner sec. 9, T. 23 S., R. 61 W; Flying A Ranch, CO <br /> USGS Quad; UTM zone 13 566930 E, 4212360 N; latitude 38 degrees, 3 minutes, 23.4 seconds <br /> N and longitude 104 degrees, 14 minutes, 13.5 seconds W; NAD 83. <br /> RANGE IN CHARACTERISTICS: <br /> Soil moisture: Moist in some part March through May, intermittently moist June through <br /> October. <br /> Moisture regime: aridic bordering on ustic. <br /> Mean annual soil temperature ranges from 9 to 13 degrees C. (48 to 56 degrees F.) <br /> 10 May 2, 2022 <br />