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Five profiles, 87-wC-1, 87-W-1, 88-w-1, 88-Y-2, and 88-w-5 shooed evidence of moderate <br /> compaction in the lower soil horizon chile profile 88-W-3 showed evidence of moderate <br /> compaction at the soil/spoil interface. Root growth in the soil was matted and confined <br /> exclusively to vertical stress cracks created by soil pads/cl ods and rock fragments. Root <br /> growth was matted horizontally at the soil/spoil inter face of Site 88-4-3 with a few roots <br /> penetrating an additional 16 inches. Site productivity should not be significantly <br /> affected by the moderate compaction since roots were able to penetrate through or around <br /> ., <br /> the compacted zones. <br />One profile, 88-W-4, had a volumetric rock fragment content in the loner spoil horizon that <br />exceeded 60 percent. Although roots penetrated easily through and to a great depth in the <br />fragmental zone, available eater-holding capacity will be very low. Excessive rock <br />fragments which generally comprise a small percentage of the total wedge reclamation area, <br />are generally confined [o small linear trough areas between adjacent spoil piles. The <br />overall potential productivity and available eater-holding capacity will remain acceptable <br />at this site since the upper three feet of the soil/spoil profile consists of silt loam <br />soil and loam spoil each possessing good uater-h of ding characteristics. Available <br />water-holding capacities of three to six inches per soil profile are considered to be <br />• within the fair suitability classification for plant growth media (BLM, 1977; Schafer, <br />1979; Soil Survey Staff, 1983; OSMRE, 1985). Site 88-w-4 had an available water capacity <br />of 6.1 inches. Vegetation at this site may show signs of stress during dry years. Similar <br />shallow soils (Starman and Splitro) occur on upper convex s~deslopes and ridgetop <br />landscapes in the premining environment. <br />One wedge reclamation area, Site 88-w-1, had an unsuitable acid base potential value for <br />the undisturbed weathered Lennox coal strata at 4.3 feet below [he surface. The available <br />water-holding capacity of 5.2 inches for the upper 4.3 feet of this profile would be <br />considered suitable. Vegetation at this site may show signs of stress during dry years. <br />Similar shallow soils (Splitro and Starman) occur on the upper convex sideslopes and <br />ridgetop landscapes in the premi ne environment. <br /> One wolf Creek profile, Site 87-wC-1, had a soil reaction value of 4.3 in [he spoil <br /> increment at 2.5 to 5.0 fee[. Very fine and fine roots were common to a depth of 4. 5 feet <br /> in this horizon. The soil reaction value of G.3 was not limiting to roo t growth act ivity. <br /> The 1991 field r oot description data and laboratory pH data indicate that a pH value of 5.0 <br /> at Seneca Mine may be too conservative when separating suitable and unsuitable spoil <br /> materials. <br />5 <br />