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Am Key Agricultural Services, Inc. <br />.�. °- 114 Shady Lane - Macomb, IL 61455 - (309) 833 -1313 <br />one soil test pit every 10 acres. The actual number of samples taken will be sufficient to <br />accurately characterize the remaining undisturbed areas. Soil samples will be obtained from <br />both the native horizons and at predetermined sampling intervals. The predetermined <br />sampling intervals will be 0 to 6, 6 to 12, 12 to 18, and in 18 inch increments to 54 inches. From <br />the 54 to 72 inch depth, the samples will be obtained from the pit face for the 54 to 60 inch <br />depth and using a bucket auger for the final 12 inches. The samples from both the pit face (54- <br />60 inches) and bucket auger (60 -72 inches) will be thoroughly mixed and a subsample will be <br />obtained for laboratory analysis. <br />Soil sampling locations were determined by randomly placing georeferenced sample locations <br />prior to going to the field (see Map 2.04.9 -3). The proposed soil sampling points locations were <br />based on a stratified random sampling from undisturbed areas, within the permitted mine site. <br />The stratified portion of the sampling was based on information obtained from previous soils <br />work completed and locations where additional soils information could be useful. The points, <br />within the stratified areas were placed randomly using the outline of the area of interest. <br />Selection of random points within the stratified areas is intended to minimize sampler bias. <br />The three samples located in the western portion, approximately 9.49 acres, of the undisturbed <br />area are intended to assist in better identifying the soils present in this area. The two samples <br />locations shown in the southern portion, approximately 1.90 acres, of the field will assist in <br />defining the soil(s) present in this area. The newly obtained undisturbed soil sampling location <br />will be used in conjunction with previously collected data to better understand the soil <br />pedology of the entire mined area and could provide critical data on what the prime farmland <br />in this field could have looked (physically, chemically, and morphologically) like prior to mining. <br />Soil sampling locations may be modified by a Certified Professional Soil Scientist or Certified <br />Professional Agronomist in the field based on plant growth, topography, and other site specific <br />conditions and in consultation with the NRCS, OSM, and DRMS. Additional pits may be added in <br />the field based on the observations made in the test pits shown in the attached figure. <br />Substitute Subsoil Redistribution Area <br />The Substitute Subsoil Redistribution Area soil resource will be visually evaluated and sampled <br />using traditional soil test pits. Within the permit area approximately three test pits will be <br />excavated with a backhoe to a depth of 60 inches at multiple locations in the Substitute Subsoil <br />Redistribution Area. At each soil test pit a soil profile description will be performed in <br />accordance with USDA protocols. Soil samples will be obtained from three sample sites shown <br />on Map 2.04.9 -3. Soil samples will be obtained from both the redistributed topsoil and subsoil <br />horizons and at predetermined sampling intervals. The predetermined sampling intervals will <br />be 0 to 6, 6 to 12, 12 to 18, and in 18 inch increments to 54 inches. From the 54 to 72 inch <br />depth the samples will be obtained from the pit face for the 54 to 60 inch depth and using a <br />Page 3 <br />