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four years to evaluate interactions between rooting characters stirs and soil/spoil quality (Schafer et. al., 19791. Seneca Coal Company did not conduct spoil or soil monitoring during the 1997 calendar year due [o the limited amount of final graded spoil available. Historical soil and spoil quality data for the 1983 through 1988 reclamation blocks are presented and discussed 1n previous Topsoil and Spoil Monitoring repo r[s (PCC, 1987 and 19891 and the Annual Reclamation Reports (PCC, 1991, 1992r 1993r 1994) that have been submitted to the Division. Additional soil/spoil fertility samples are planned for the 1998 field season. Spoil Sampling in the Lennox Highwall Reduction Area SCC is required to sample final graded spoil from the Lennox highwall reduction area on a 300 foot grid and test for sodium. Exposed sodic strata with an unsuitable SAR level will either be buried in the final pit or covered with two to three fee[ of suitable spoil prior Lo soil replacement. Ei nal grading was initiated in the Lennox highwall reduction area during the 1994 field season. Final grading was completed prior [o October 1, 1995 as specified in the Division's February 1, 1995 letter. No final grading was completed in the Lennon highwall reduction area during the 1997 field season. Please refer to the 1996 Annual Reclamation Report for [he last set of spoil samples taken in this area. Wolf Creek SCC is required Lo sample and analyze final graded spoil from the Wolf Creek mining area prior to soil replacement. Spoil is sampled on a 300 foot horizontal grid and tested for pH, acid base potential (ABP1, and soil salinity (EC). Suitable spoil topdressing (subsoil) is replaced prior to soil redistribution whe[e acid strata (pH GS and ABP G-5) are encountered. The monitoring program is outlined on Pages 6-153, 6-153a, 6-164, and 9- 40 of Tabs 6 and 9, Volumes 3 and 7, Permit C-BO-005. No final graded spoil samples were taken in 1997. Analysis for existing graded areas can be found in 1994 Annual Reclamation Report, IPWCC, 1995). 1997 Soll Replacement Thickness SCC is required by CDMG to closely observe and routinely inspect soil replacement thickness in the Wadqe and wolf Creek reclamation areas at Seneca II Mine. This monitoring requirement is included as Item 5 of the Topsoil Qualify Control Program presented in . Volume 7, Tab 9, Attachment 9-4, Pa qe 9-41 of Permit C-80-005. Historical soil replacement thickness information for the 1989 through 1992 reclamation blocks is presented in Table 9- 4-3, Attachment 9-4, Tab 9 of Permit C-80-005, the Second, Third, and Fourth Annual Topsoil 2