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Custom Soil Resource Report <br />Tables--Gravel Source (Proposed Frentress Gravel Pit) <br />Gravel Source-,Summaryby; Map Unlt?-?Routt-Area, Colorado; Parts,W Rio'-Blanco and Routt Countles <br />Map unit <br />symbol Map•unlt name Rating t .Component name <br />(percent) Rating reasons`: <br />1numeric'va{iies) Acresan, <br />AOI Percent of AOI <br />19D Evanot loam, 1 to <br />12 percent Poor Evanot (80°x6) Bottom layer (0.00) 8.8 93.3% <br /> slopes Thickest layer (0.00) <br />102 Shermap loam, <br />cool <br />40 to 65 Poor Shermap, cool (80%) Bottom layer (0.00) 0.6 6.7% <br /> , <br />percent slopes Thickest layer (0.00) <br />?Totals for Area of Interest 9.5 100.00/9 <br />Gravel+Source? Summary by Rating'value <br /> <br />Rating Acres in A01 " Percerrtof A01 <br />Poor <br />9.5 <br />100.0% <br />Totals for Area of interest 9 <br />5 <br /> . 100.0% <br />Rating Options-Gravel Source (Proposed Frentress Gravel Pit) <br />Aggregation Method: Dominant Condition <br />Component Percent Cutoff None Specified <br />Tie-break Rule: Lower <br />Roadfill Source (Proposed Frentress Gravel Pit) <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 />The soils are rated "good," "fair," or "pool" as potential sources of roadfill. The ratings <br />are based on the amount of suitable material and on soil properties that affect the ease <br />of excavation and the performance of the material after it is in place. The thickness of <br />the suitable material is a major consideration. The ease of excavation is affected by <br />large stones, depth to a water table, and slope. How well the soil performs in place <br />after it has been compacted and drained is determined by its strength (as inferred from <br />the AASHTO classification of the soil) and linear extensibility (shrink-swell potential). <br />Normal compaction, minor processing, and other standard construction practices are <br />assumed. <br />Numerical ratings between 0.00 and 0.99 are given after the specified features. These <br />numbers indicate the degree to which the features limit the soils as sources of roadfill. <br />The lower the number, the greater the limitation. <br />18