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Exhibit I Peters 313 Soil Information Soils at the Peters 313 site are described on Sheets 13 and 36 in the Soil Survey of Weld County, Colorado—Northern Part published in 1981 by the Soil Conservation Service.Soils at the site include gravelly, and sandy loamy alluviums(Ardidic Calciustolls and Aridic Argiustolls) associated with the terraces of Porter Creek. These areas are shown on Exhibit C2,and on the map on the following page. The site contains approximately 30 acres of Ascalon fine sandy loam (unit 4), 105 acres of Peetz gravelly sandy loam (unit 51), approximately 10 acres of Ascalon sandy loam (unit 5),and approximately 5 acres of Paoli fine sandy loam (unit 49). The 1981 soil survey identifies the areas of Ascalon fine sandy loam describes a deep,well-drained soil with a fine sandy loam surface layer 8 inches thick(topsoil). Substratum to a depth of 60 inches or more is calcareous sandy loam. This unit is used as non-irrigated cropland and rangeland. The description given for Peetz gravelly sandy loam as a deep,somewhat excessively drained soil. The surface layer(topsoil) is greyish brown gravelly sandy loam 4 inches thick,and the lower part is brown very gravelly loamy sand 4 inches thick. The underlying material,to a depth of 60 inches or more, is calcareous very gravelly sand. Most areas of this unit are used as rangeland. A few areas are used as a source of gravel. The description given for Ascalon sandy loam describes a deep,well-drained soil with a sandy loam surface layer 6 inches thick. Substratum to a depth of 35 inches is sandy clay loam. Substratum to a depth of 35-80 inches is sandy loam. Most areas of this unit are used as rangeland. The description given for Paoli fine sandy loam describes a deep,well-drained soil,with a fine sandy loam surface layer 15 inches thick(topsoil). Substratum to a depth of 60 inches or more is sandy loam. Most areas of this unit are used as rangeland.