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Baseline Technical Report <br />ARCADIS Report for Soils and Biological <br />Resources, MLE2 Project Area <br />Given the factors above and the data from field surveys, an average growth medium <br />salvage depth was determined for each mapped soil unit (Table 2 -3). Suitability <br />ratings are based on soil interpretation records provided by the NRCS and the <br />suitability guidelines in Table 2 -4. <br />Four suitability ratings (Good, Fair, Poor, and Unsuitable) were used to determine the <br />salvage depths of each mapping unit. Limiting factors were noted for each <br />component of a soil series or phase. Coarse fragment content is primarily <br />responsible for the suitability ratings in Table 2 -3. Soils with more than 35 percent <br />coarse fragments are rated unsuitable for use as growth medium. <br />Estimates of salvageable soil growth medium were calculated based on suitability <br />ratings, average growth medium depths, and soil distributions presented in Tables 2- <br />2, 2 -3, and 2-4. Soil components with average growth medium depths of less than 6 <br />inches were not included in the total amount of salvageable material due to <br />complications associated with salvaging shallow soils with heavy equipment. Good <br />S quality soil growth medium is limited to the extents of soil map unit CQ. Soil map <br />units EB, RI, and Sz contain fair quality soil growth medium. Approximately 1.13 <br />million cubic feet (26 acre -feet) of good and approximately 8.97 million cubic feet <br />(206 acre -feet) of fair quality soil growth medium would be potentially salvageable. <br />These estimates suggest that all areas within the MLE2 project area could be <br />potentially reclaimed with approximately 6 inches of secondary growth medium. <br />CCV Baseline Soils Biology Resource Report (11- 17- 11).doc 10 <br />