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<br />This unit is poorly suited to urban development. The main limitations are depth to the water table and the hazard of flood- <br />ing. <br />• This map unit is in capability subclass Illw. It is in Riverbottom range site. <br />Table B-1 shows selected properties of [he soils described above. <br />Table B-1 -Selected Soil Properties <br />Soil name and <br />map symbol Depth Clay Permeability Available <br />water <br />ca acit Soil <br />reaction Salinity Shrink- <br />swell <br />olemial Erosion <br />factors <br />K / T Wind <br />erodibility <br />rou Organic <br />matter <br /> [n Pcl in/hr In/in H Mmhos/cm Pc[ <br /> <br />4]------------ 0-21 IS-27 .6-2.0 .16-.20 6,1-8.4 <4 Low---- .37 / 5 4L .5-1 <br />Havre 21-60 18-30 .6-2.0 .14-.18 7.4-9.0 <8 Low---- 28 <br /> <br />71------------ 0-17 18-27 .6-2.0 .16-.20 7.4-8.4 <2 Low---- .32 / 5 5 2-4 <br />ob 17-35 18-27 2.0-6.0 .10-.15 7.4-8.4 <2 Low---- .32 <br /> 35-60 2-8 >20. .03-.OS 6.6-7.8 <2 Low---- .10 <br /> <br />92------------ 0-8 5-15 2.0-6.0 .12-.16 6.6-7.8 <2 Low---- .20 / 5 3 ------- <br />Trembles 8-60 8-15 2.0-6.0 .11-.15 7.4-8.4 <2 Low---- .20 <br />From site tests, it is estimated that Trembles Loam topsoil is available for stripping and later use to a <br />depth of 2.0'. Below [his depth, a thin layer of subsoil/overburden of exists before the gravel deposit <br />is reached.. As described in the mining plan, all topsoil will be salvaged and used in reclamation. <br />• <br />Piceance Pit 7/01 lfl <br />