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Engineering Properties-Georgetown Area, Colorado, Parts of Clear Creek, Gilpin, and Park Counties <br />Soil Engineering Properties - Robert Fulton <br />Engineering Properties- Georgetown Area, Colorado, Parts of Clear Creek, Gilpin, and Park Counties <br />Map unit symbol and soil <br />name Depth USDA texture Classification Fragments Percentage passing sieve number- Liquid Plasticity <br /> limit index <br /> Unified AASHTO >10 3-10 4 10 40 200 <br /> inches inches <br /> In Pct Pct Pct <br />30-Mammoth-Ohman- <br />Bendemeere complex, <br />15 to 30 percent slopes <br />Mammoth 0-1 *Slightly decomposed PT A-8 0 0 100 100 - - <br /> plant material <br /> 1-10 *Very gravelly sandy loam GC-GM, A-1-a, 0-25 0-25 35-55 30-50 20-40 10-20 20-25 5-10 <br /> GC, A-1-b, <br /> GW- A-2-4 <br /> GC <br /> 10-16 *Gravelly loam, Sandy SC, SC- A-4 0-10 0-15 60-80 55-75 50-70 35-55 20-25 5-10 <br /> clay loam SM, <br /> GC- <br /> GM, <br /> CL, <br /> GC, <br /> CL-ML <br /> 16-22 *Very gravelly loamy sand, GW-GM, A-1-a, 0-25 0-25 35-50 1 30-50 20-40 10-20 20-25 NP-5 <br /> Very gravelly sandy clay GC- A-1 -b <br /> loam, very gravelly GM, <br /> sandy loam, sandy clay GM <br /> loam <br /> 22-32 *Very gravelly sandy loam, GC-GM, A-1-a, 0-25 0-25 35-50 30-50 20-40 10-20 20-25 NP-5 <br /> Very gravelly sandy clay GM, A-1 -b <br /> loam, very gravelly GW- <br /> loamy sand, sandy clay GM <br /> loam <br /> 32-59 *Very gravelly sandy loam, GM, GW- A-1-a, 0-25 0-25 35-50 30-50 20-40 10-20 20-25 NP-5 <br /> Very gravelly sandy clay GM, A-1 -b <br /> loam, very gravelly GC- <br /> loamy sand, sandy clay GM <br /> loam <br />Natural Resources Web Soil Survey 12/28/2010 <br />Conservation Service National Cooperative Soil Survey Page 5 of 7