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TABLE 7-6f-4 <br />• Seneca II Mine "k" Factorsl <br />January, 1989 <br />Soil Type Hydrologic Erodibility (k) <br />or Areal Soil Group3 Factor4 <br />AW B 0.20 <br />2VD,2VE,2VF C 0.23 <br />XSC,X8D,X8E B 0.22 <br />XSF B 0.21 <br />lOD,lOE,lOF D 0.19 <br />12E,12F C 0.23 <br />23B D 0.20 <br />25E D 0.20 <br />35D,35E,35F D 0.22 <br />53E B 0.22 <br />62C B 0.22 <br />66C,66D,66E,66F C 0.19 <br />• 99 C 0.08 <br />SSRO D 0.02 <br />Topsoil Remved D 0.24 <br />Spoil Piles/Graded Spoil B 0.16 <br />Reclaimed/Topsoiled B 0.32 <br />llncludes Fly (1979) baseline soil survey data, PCC (1986) sieve analysis <br />cong~leted by ACZ, PCC (1987) baseline soil survey data for the Cyprus <br />area, and PCC (1983-1988) topsoil and spoil sampling data from <br />representative reclamation sites. <br />2As identified on E~ibit 9-1, Soil Types and Sample Locations, dated <br />5-13-88. <br />3Determined by utilizing Soil Conservation Service (SCS, 1981) Soil <br />Interpretation Procedural Guidelines for preparing SCS-SOUS-5 forms and <br />map unit coi~osition information listed in Tab 9, Attac2mient 9-6, <br />Addendum 9-6-1 and Tab 9. <br />4S~rface soil horizon k values were calculated utilizing the USDA-ARS <br />revised USLE software program. The k values were adjusted for volumetric <br />rock frac~nents, whenever necessary, acooiding to Table 603-5 (SCS, <br />• 1983-National Soils Handbook). The map unit k factors are based upon <br />ca~q~osition information listed in Tab 9, Attachment 9-6, Addendinn 9-7-1 <br />and Tab 9. <br />7-6f-5 Revised 08/21/91 <br />