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• GREEN RSVER VERY FINE SANDY LOAM, DEEP OVER GRAVEL, 0 to 2 percent <br />elopes, Class IIa Land (Gm) <br />This soil occurs along the Gunnison and Colorado Rivera, but for the <br />moat part at higher levels than the other Green Fiver soils. Its <br />better position makes it leas susceptible to flooding or occasional <br />high water tables. It can be cropped sueceasfully, especially after <br />it has been ditched to provide adequate underdrainage. <br />i <br />The surface soil, a pale-brown or light brownish-gray very fine sandy <br />loam, contains numerous small fragments of mica. Below depths of <br />10 to 12 inches, the very fine sandy loam has a brighter pale-brown <br />or very pale-brown color, and at depths of 24 to 3O inches it grades <br />into similarly textured soil material that shows light-gray and reddish- ~ <br />brown specks or very small spots. Below depths of 3 or 4 feet tex- <br />turel variations are common, but fine sandy loam is dominant. <br />When moist, this soil is friable. Well-disseminated 1i.me ie present <br />from the surface downward, but the organic-matter content ie low. <br />Workability and filth are exceptionally favorable for irrigation and <br />cultivation, but some places need ditbhes that will lower the water <br />table. I. <br />Soil limitations are classified as severe for local roads and streets <br />(seasonal high water tables, poor traffic-supporting capacity, sub- ~ <br />ject to frost heave), shallow.excavations (seasonal high water table), <br />dwellings without basements (seasonal high water table), sanitary land ~ <br />i <br />fill (seasonal high we.ter table), septic tank absorption fields <br />(seasonal high water table), and sewage lagoons (rapid permeability <br />below about 1 £oot, seasonal high water tables. ) <br />