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<br />.~ <br />~-xF{(Q~ ~ ~ S~ I~-S <br />1--~ <br />Soil Investigation John S~hmahl Granite Quarry <br />The soil mapping unit which ors in the SEA of section <br />SWw of section 10, and the SW's of section 16, T. 145. R. <br />mapping unit Rp-Rock Outcrop. <br />9~ the <br />0 W. is <br />Rp-Rock Outcrop: This mapping unit C"fists mainly of roc out- <br />crop on very steep slopes, canyon slopes, cliffs and steep mesa <br />edges. The rock is mainly granite and sandstone. Slopes f this <br />unit varies from about 26 percent on the toeslopes to vert cal <br />escarpments. <br />Included in mapping are small areas of stony soils which <br />on the colluvail toeslopes. These stony soils formed in <br />de sced from- sandstone and granite,%" Soil-deptTi in these <br />varies from 20 to 60 in~es or more. <br />A representative profile of these collu~rial soils is a re <br />brown very stony sandy loam about 40 inches deep, ` <br />~~ ~ ,~ --- <br />~rmeability of these stony soils is moderate. Available <br />capacity is low. Effective rooting depth is 20 to 60 inc <br />more. Runoff is rapid and the hazard of water erosion is <br />vium <br />fish <br />er / <br />or L <br />