2012-01-06_PERMIT FILE - C1982057 (16)

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• Internal drainage class • • Depth to ground water lif e:ncounteredl • Salts or alkali • Surface stoniness The sampling site location and number were plotted on the topographic field map. Une two- quart sample was taken to represent each natural soil horizon or contrasting layer within the depth to 60 inches or bedrock, whichever was shallower. Samples were collected from hand-dug pits and 2 '/.-inch diameter auger holes that wr:re dug a[ all soil sampled sites. The samF•led soil material was placed in clean, labeled, polye'[hylene plastic bags and was kept cool anti dry to limit chemical changes. Most horizons of all profiles were dry upon sampling and were not further air dried prior to shipment to PCL in Freeburg, Illinois, or IML in Sheridan, Wyomi:tg for analysis. Each sample was split at the laboratory with one portion being used for analysis and the archival portion retained for additional tests, if necessary. Soil Horizon Nomenclature. In 1982, the NRCS adopted a new system of soil horizon nomenclature (Guthrie and Witty, 19821 All soil series being mapped within ongoing soil surveys would be revised before publication. Soil series not being mapped on currem: NRCS • soil surveys would not be revised at this time. As a result, some soil series descriptions from the 1979 and 1983 surveys will need horizon nomenclature revision in the study area in order to be consistent with NRCS standards and methods. The SCC Seneca II-W/II-W South Extension Area soil surveys were conducted in accordance with the standards of the National Cooperative Soil Survey. This horizon nomenclature revision, as necessary, was completed as part of this final report. Soil Series Correlation. All study area soil series were correlated with existing NRCS soil series criteria. Current soil series and rnap unit descriptions, soil interpretation records, an[1 range site descriptions, for soils previously mapped on the study area, were obtained from NRCS and placed in SCC's field and office notebook. This information facilitated soil series correlation. Prime Farmland Determination. The Colorado State Office of NRCS in Denver was contacted for information concerning prime farmland with the study area. In 1982, they issued a revised publication entitled "Important Frumland Inventory -Colorado" (SCS, October 19821 This document, as well as a supplementary publication entitled "Important Farmlands of Colorado - State Summary and Map" (SCS and Colorado State University Agricultural Experiment :nation, 19801 were reviewed. . 14 Revised 9/98