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• PROGRESSO SERIES <br />LOCATION PROGRESSO CO+AZ NM <br />Established Series <br />Rev. BDS/GB/RLB <br />8/97 <br />The Progresso sedes consists of moderately deep, well drained soils formed in alluvium derived from sandstone <br />or limestone. Progresso soils are on old terraces, benches, mesas, and upland hills and ridges. Slopes range from <br />0 to 15 percent. The mean annual precipitation is about 14 inches and the mean annual temperature is about 46 <br />degrees F. <br />TAXONOMIC CLASS: Fine-loamy, mixed, superadive, mesic Ustic Calciargids <br />TYPICAL PEDON: Progresso loam -rangeland. (Colors are for dry soil unless otherwise noted.) <br />A-0 to 7 inches; reddish brown (5YR 5/4) loam, dark reddish brown (5YR 3/4) moist; weak fine granular structure; <br />slightly hard, very liable, slightly stid<y and plastic; slightly alkaline; Gear smooth boundary. (4 to 8 inches thick) <br />• Bt-7 to 14 inches; reddish brown (SYR 5/4) day loam; reddish brown (5YR 4/4) moist; weak medium subangular <br />structure; hard, triable, slightly sticky and plastic; slightly alkaline; Gear smooth boundary. (4 to 10 inches thick) <br />Btk-14 to 24 inches; reddish brown (5YR 5/4) Gay loam, yellowish red (5YR 4/6) moist; moderate medium <br />subangular blocky; hard, liable, slightly sticky and plastic; lime segregated in common fine in-egulady shaped soft <br />masses; violently effervescent; moderately alkaline; gradual wavy boundary. (6 to 10 inches thick) <br />Bk-24 to 36 inches; white (5YR 8/1) loam, pink (5YR 7/4) moist; massive; hard, very friable, slightly sticky and <br />plastic; 10 percent pebbles; lime disseminated throughout and on pebbles as thick pendants; calcareous; <br />moderately alkaline; abrupt wavy boundary. (6 to 12 inches thick) <br />R-36 inches; hard sandstone. <br />TYPE LOCATION: Montrose County, Colorado; about 100 feet east and 2,300 feet north of the southwest comer <br />of Sec. 16, T. 48 N., R. 17 W. <br />RANGE IN CHARACTERISTICS: <br />Mean annual soil temperature ranges from 47 to 52 degrees F. Depth to bedrock ranges from 20 to 40 inches. <br />Depth to calcareous material ranges from 8 to 24 inches. The moisture control section is moist in some part less <br />than one-half the time the soil temperature is above 41 degrees F., and is dry in all parts for 15 consecutive days <br />from May 15 to June 15. Coarse fragments range from 0 to 15 percent and are dominantly pebble-sized. <br />L J <br />(Revised March 2006) Attachment 2.04.9-3-28 <br />