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1. The area around a suspect hole will be sampled on a Goser spacing interval in order to <br />better define the lateral extent and variability of the unsuitable material. <br />2. In those areas where specific geochemical or physical problems are encountered, the <br />regraded spoil will be mechanically loosened and mixed by ripping, chiseling, or <br />approved alternate forms of scarification. The major advantages of scarification are <br />related to the physical properties of the spoil. The topsoil and spoil are scarified to <br />decrease compaction, increase aeration and water movement, and increase plant <br />rooting depths. Increased water movement may, to some degree, allow more <br />downward leaching of carbonates. Therefore, although the greatest benefits of <br />scarifying are related to the physical soil properties (density, porosity), a lesser <br />geochemical benefit (increased rate of carbonate leaching due to increased water <br />movement) may result. <br />3. If none of the above procedures satisfactorily mitigate a certain problem, the Division <br />will be notified and recommended actions will then be implemented. <br />• WFC will maintain and periodically review the existing quality control program used to evaluate <br />overburden, interburden, and spoil handling activities at New Horizon Mine. WFC will maintain <br />records of the sampling results for each logical reclamation unit. These records will be kept on <br />file at the mine site and will be reported within the topsoil balance/spoil quality report to be <br />submitted annually on April 15th of each year. <br />New Horizon 2 Compactability and Erodibility <br />Determining the compaction potential of disturbed overburden is important to assess postmine <br />spoil conditions including: hydraulic conductivity, revegetation success, landscape stability, and <br />equipment trafficability. Generally, stability and/or compaction problems are related to soils high <br />in shrink/swell clays, soils with large proportions of sand and clay (sandy clay texture), and soils <br />with approximately equal proportions of the sand, silt, and clay-size particle fractions. These three <br />conditions are not highly desirable since a high shrink/swell clay content in postmine landscapes <br />causes poor stability and low permeability conditions, a sandy clay textured soil develops surface <br />• (Reviserd za nuc ost 2.05.4(2)(d)-7 <br />