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.- <br />8' z 9' aad the 4:1 plots measured 8' a 16'. Plots measuring 10' x 16' <br />aad 10' z 9' were constructed oa the east aad west ends of the pile <br />respectively. Eight plots measuring 10' x 20' were also constructed <br />on the top of the refuse pile. <br />- After construction of the refuse pile, soil materials were spread <br />' over the plots to be resoiled. the surface of the refuse material was <br />lightly scarified to insure good contact betcreea the refuse and topsoil. <br />Aa overall 6" depth of covering was attempted. Hwever, due to the limita- <br />tions of the equipment used to beadle soil materials aad the difficulty <br />in grading the coal refuse initially, a variation in soil depth resulted. <br /> Soil depths ranged from as excess of 12" sear the top of side plots to <br /> approzimately a total of 4" near the bottom. Sail depth on the top plats <br /> also varied from the desired 6" is some areas due to the factors outlined <br />,~ above plus settling which probably occurred after rain aad saw storms <br /> during the month of September. All plots were raked to prepare a uniform <br /> soil surface across the ploes. <br /> The soil materials used to cover the refuse were gathered from a <br /> meadow sear the test site. Soil surveys conducted in the area suggest <br /> that many of the meadw soils are mollisols. The presence or indication <br /> of argillic horizons is common in these soils. Many of the soils are <br /> moderately deep to deep and medium to moderately fine textured (Cline <br /> 1976). Only a small amount of subsurface material was incorporated into <br />- the pile (1 to 2 cubic yards). This material was well mixed with <br /> surface material. Nearly all of this subsurface material is incorporated <br /> in the north aspect, 4:1 plots. <br />After all plot construction work had been completed, a chicken wire <br />fence vas built to exclude rodents and other herbivores from the plantings. <br />5 <br />