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Gravel Saone— Summary by Map G ni —Rio Grade County Area, Colorado (c <br />Nap unit <br />synrlol <br />t9.p unit rurne <br />Rating <br />Component mine <br />(percent) <br />Rating reasons <br />(numeric values) <br />Acres in <br />ACS <br />Percent of Ad <br />De <br />Dernch oobbly loam <br />Poor <br />Demck (100%) <br />Thickest layer (0.00) <br />1.0 <br />10.5% <br />Bottom layer (0.00) <br />LuB <br />Luhon loam, 1 ko 3 <br />peroers slopes <br />Poor <br />Luhon (100 %) <br />Bottom layer (0.00) <br />3 1 <br />17 1% <br />Thickest layer (0 00) <br />TsE <br />Travelers-Ganta <br />complex. 5 to 25 <br />percent slopes <br />Poor <br />Travelers (45%) <br />Thickest layer (0.00) <br />13 0 <br />725% <br />Bottom layer (0.00) <br />Totals for Area of Interest <br />17.9 <br />100.0% <br />Gravel Source— imunary W Rating value <br />Rating <br />Acres in A01 <br />Percent of A01 <br />Poor <br />17 9 <br />100.0% <br />Totals for Area of kierest <br />17.9 <br />100.0% <br />Custom Soil Resource Report <br />Tables — Gravel Source (BURTON PIT GRAVEL SOURCE) <br />Rating Options — Gravel Source (BURTON PIT GRAVEL SOURCE) <br />Aggregation Method: Dominant Condition <br />Component Percent Cutoff' None Specified <br />Tie -break Rule: Lower <br />Roadfill Source (BURTON PIT GRAVEL ROADFILL <br />SOURCE) <br />Roadfill is sod matenal 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 Tess 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 sal matenal is excavated and spread. <br />The sods are rated "good," "fair." or "poor as potential sources of roadfill The ratings <br />are based on the amount of suitable matenal and on sal properties that affect the ease <br />of excavation and the performance of the matenal 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 sal performs in place <br />after it has been compacted and drained is detemtined by its strength (as inferred from <br />the AASHTO classification of the sal) and linear extensibility (shnnk -swell potential). <br />Normal compaction, minor processing, and other standard construction practices are <br />assumed. <br />19 <br />