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This quality control information is used to verify soil salvage estimates predicted from <br />the baseline soil survey, confirm soil map unit types, justify salvage thickness, and <br />evaluate soil suitability. Observations within the mixed brush sandstone-derived soils <br />in the south pit indicated very suitable loamy soil uas salvaged down to the fractured <br />sandstone. The thickness of recovered soil ranged from 0.5 feet on ridgetops to over 6.0 <br />feet in suaLe Landscapes. Observations within the grassland shale-derived soils in the <br />north pit and at topsoil stockpile Site K indicated mostly marginally suitable topsoil <br />with some undesirable subsoil/substratum soil had been salvaged. The thickness of <br />recovered soil ranged from 0.5 to 2.0 feet. <br />Peabody has experienced difficulty restricting salvage to 0.5 feet on the very steeply <br />sloping shaley soils. This concern was presented to the Division in Tab 21, pages 8 and <br />25 of the permit revision package. Peabody will continue to closely monitor this <br />situation during the 1992 field season, especially in the north development block where <br />the majority of soils are shale-derived. Only suitable sources of soil within [he <br />disturbance area will be salvaged to ensure [he reclaimed areas are restored to the <br />desired postmine land uses. Peabody will obtain variances pursuant to Rule 4.06.2(2) and <br />Permit C-82-057 whenever suitable soil cannot be salvaged exclusively from any map unit <br />because of equipment limitations or operator safety concerns. <br />Soil Redistribution Thickness. Peabody is required by Permit C-62-057 and Section <br />4.06.4(2)(6) of Colorado~s Regulations for Coal Mining to document and record [he soil <br />redistribution thickness for each reclamation block using a minimum sampling intensity of <br />one hole per five acres. The soil replacement thickness information is used to adjust <br />soil salvage depths, if necessary, and for bond release purposes. Soil thickness data <br />for the small 1990 (5.3 acres) and 1991 (10.7 acres) reclamation blocks shown on Exhibit <br />91.2 will be collected during the 1992 field season. The data will be presented with <br />the 1992 Annual Reclamation Report. <br />Spoil Sampling in the Lennox Coal Outcrop Area. No final grading uas completed in the <br />Lennox Coal outcrop area during the 1991 field season. Therefore, no spoil samples were <br />collected to determine acidity levels and clay percentages pursuant to Permit C-82-057, <br />Tab 21, Page 4. <br />According to Exhibits 19-1, Reclamation Schedule (dated 11/03/90) and Exhibit 6-6, <br />Overburden Coat Hole Location Map (dated 11/28/90) from Permit L-82-057, the first Lennox <br />2 <br />.~ <br />