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60 SOIL SURVEY <br /> TAIILE 5.—Engineering <br /> Suitability as a source of— <br /> Soil series and map symbols Highway location <br /> Topsoil Sand Gravel Road fill <br /> Mesa: <br /> Clay loams (M I A, M I B. M 1C. Fair to I Fair if washed ii Good if washed Good___________ Good stability and bearing <br /> CkC). good. and screened. and screened, value;well drained. <br /> Gravelly clay loams (MoA, Poor_______ Fair____________ Good if washed Good___________ Good stability and bearing <br /> MOB, MOC). and screened. value;well drained. <br /> Gravelly clay loams, shale Poor_______ Fair to depth of Good to depth Good to depth Good stability and bearing <br /> substratum (MsA, MsQ. 30 inches. of 30 inches of 30 inches. value to depth of 30 inches; <br /> if washed and shale at depth of more <br /> screened. than 30 inches. <br /> Stony clay loam (M tC)____-___ Poor_______ Poor___________ Good if washed Fair to good; Good stability and bearing <br /> and screened, large stones. value;stony. <br /> Orchard: <br /> Clay loams (OcA, OcB)_______ Fair_______ Fair if washed Good if washed Good;stony____ Good stability and bearing <br /> and screened. and screened. value;well drained. <br /> Gravelly clay loams (OgA, Poor_______ Fair if washed Good if washed Good to depth Good stability and bearing <br /> OgB), and screened. and screened. of 40 inches. value. <br /> Persayo (PeA, PeB, ChC, ChC2, Poor_______ Unsuitable______ Unsuitable______ Poor___________ Poor stability and bearing <br /> CkC, CIC). value;shallow to shale. <br /> Poudre (Po)___________________ Good______ Fair if washed Poor___________ Poor;highly Poor stability and bearing <br /> and screened. micaceous. value;high water table. <br /> Rance (RaA, RaB, RaC, CIC)____ Poor_______ Poor___________ Fair if washed Poor___________ Poor stability and bearing <br /> and screened. value;high in gypsum; <br /> erodible. <br /> Ravola (RI)____________________ Fair_______ Unsuitable______ Unsuitable______ Fair___________ Fair stability and bearing <br /> value;well drained. <br /> Rock outcrop, Rough broken Unsuitable__ Unsuitable______ Unsuitable______ Unsuitable______ Very shallow to sandstone or <br /> land, and Rough stony land shale. <br /> (Rr, RtC, RtE, Ru, Rv, Rw, <br /> Ry). <br /> Saline wet land (Sa)____________I Unsuitable__ Poor___________ Poor___________ Poor___________ Poor;high water table;high <br /> salinity. <br />