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Custom Soil Resource Report <br />Tables — Gravel Source (Western Gravel LLC (Phase 1)) <br />Gravel Source — Summary by Map Unit— Rio Blanco County Area, Colorado <br />Map unit symbol <br />Map unit name <br />Rating <br />Component <br />Rating reasons <br />Acres in AOI <br />Percent of AOI <br />Poor <br />30.0 <br />99.5% <br />name (percent) <br />(rating values) <br />0.5% <br />11 <br />Borollic <br />Calciorthids- <br />Poor <br />Borollic <br />Calciorthids <br />Bottom layer <br />(0.00) <br />9.3 <br />30.9% <br />Guben <br />complex, 6 to <br />(60 %) <br />Thickest layer <br />50 percent <br />(0.00) <br />slopes <br />Guben (30 %) <br />Thickest layer <br />(0.00) <br />Bottom layer <br />(0.00) <br />71 <br />Redrob loam <br />Poor <br />Redrob (85 %) <br />Thickest layer <br />0.0 <br />0.0% <br />(0.00) <br />Bottom layer <br />(0.00) <br />104 <br />Yamac loam, 2 to <br />15 percent <br />Poor <br />Yamac (85 %) <br />Bottom layer <br />(0.00) <br />20.7 <br />68.6% <br />slopes <br />Thickest layer <br />(0.00) <br />129 <br />Water <br />Not rated <br />Water (95 %) <br />0.2 <br />0.5% <br />Aquolls (5 %) <br />Totals for Area of Interest (AOI) <br />I 30.21 <br />100.0% <br />Gravel Source— Summary by Rating Value <br />Rating <br />Acres in AOI <br />Percent of AOI <br />Poor <br />30.0 <br />99.5% <br />Null or Not Rated <br />0.2 <br />0.5% <br />Rating Options — Gravel Source (Western Gravel LLC (Phase 1)) <br />Aggregation Method: Dominant Condition <br />40 Component Percent Cutoff. None Specified <br />Tie -break Rule: Lower <br />Roadfill Source (Western Gravel LLC (Phase 1)) <br />Roadfill is soil material that is excavated in one place and used in road embankments <br />in another place. The soils are rated as a source of roadfill for low embankments, <br />generally less than 6 feet high and less exacting in design than higher embankments. <br />The ratings are for the whole soil, from the surface to a depth of about 5 feet. It is <br />assumed that soil layers will be mixed when the soil material is excavated and spread. <br />19 <br />E <br />