CORRESPONDENCE - 75A SEXLINGER FARMHOUSE

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considered in the index rating. The factors are: profile characteristics, texture of the surface layer, slope, and other factors (e.g., drainage, salinity). In some situations, only the USDA Land Capability Classification information may be currently available from a given published soil survey. However, Storie Index ratings can readily be calculated from information contained in soil surveys by qualified soil scientists. Users are encouraged to seek assistance from NRCS staff or Certified Professional Soil Scientists to derive Storie Index information for the soils as well. If, however, limitations of time or resources restrict the derivation of Storie Index ratings for the soils within a region, it may be possible to adapt the Land Evaluation by relying solely upon the LCC rating. Under this scenario the LCC rating would account for 50 percent of the overall LESA factor weighting. Identifyina a Project's Soils In order to rate the Land Capability Classification and Storie Index factors, the evaluator must identify the soils that exist on a given project site and determine their relative proportions. A Land Evaluation Worksheet (Table 1A.) is used to tabulate these figures, based upon the following: Step 1. Locate the project on the appropriate map sheet in the Soil Survey. Step 2. Photocopy the map sheet and clearly delineate the project boundaries on the map, paying close attention to the map scale. Step 3. Identify all of the soil mapping units existing in the project site (each mapping unit will have a different map unit symbol) and enter the each mapping unit symbol in Column A of the Land Evaluation Worksheet (Table 1A). Step 4. Calculate the acreage of each soil mapping unit present within the project site using any of the means identified in Section 1, Required Resources and Information, and enter this information in Column B. Step 5.