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Custom Soil Resource Report <br /> Soil Engineering Properties <br /> Absence of an entry indicates that the data were not estimated. The asterisk'*' denotes the representative texture; other <br /> possible textures follow the dash. The criteria for determining the hydrologic soil group for individual soil components is <br /> found in the National Engineering Handbook, Chapter 7 issued May 2007(http://directives.sc.egov.usda.gov/ <br /> Open NonWebContent.aspx?content=1 7757.wba). Three values are provided to identify the expected Low(L), <br /> Representative Value (R), and High (H). <br /> Engineering Properties-Arapaho-Roosevelt National Forest Area,Colorado,Parts of Boulder,Clear Creek,Gilpin,Grand,Park and Larimer Counties <br /> Map unit symbol and Pct.of Hydrolo Depth USDA texture Classification Pct Fragments Percentage passing sieve number— Liquid Plasticit <br /> soil name map gic limit y index <br /> unit group Unified AASHTO >10 3-10 4 10 40 200 <br /> inches inches <br /> in - - L-R-H L-R-H L-R-H L-R-H L-R-H L-R-H L-R-H L-R-H <br /> 2703B—Cypher- <br /> Ratake families <br /> complex,5 to 40 - <br /> percent slopes <br /> - <br /> Cypher family 40 D 0-4 Very gravelly coarse GC-GM, A-1-a, 0-0-0 0-0-12 37-48- �34-46- 19-27- '10-14- 20-23 4-6-9 <br /> sandy loam GC A-1-b, 59 57 37 20 -28 <br /> A-2-4 I <br /> - - - - - - - - - - -- 4-- - <br /> 4-10 Very gravelly coarse GC-GM, A-1-a, 0-0-5 0-0-23 31-48- 29-46- 16-27- 8-14-18 19-22 4-6-9 <br /> 00 <br /> sandy loam, GW- A-2-4, 53 52 33 -27 <br /> extremely cobbly GC,GC A-1-b <br /> san <br /> - - T- - d10-20 Bedrock <br /> loam <br /> Ratake family 40 D 10-8 Very gravelly sandy GC-GM, A-1-b, 0-0-12 7-13-18 39-49- 36-47- 27-35- 11-15- 22-24 4-5-12 <br /> loam GC A-1-a, 64 63 53 26 -33 <br /> A-2-4 <br /> 8-18 Very gravelly sandy GC,GC- A-2-4, 0-0-11 7-13-17 36-49- 33-47- 24-36- 11-19- 20-26 4-9-12 <br /> loam,extremely GM A-1-a, 58 56 46 25 -31 <br /> stony coarse A-1-b <br /> sandyloam <br /> I18-28 Bedrock — — — — — — — — <br />