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Key Agricultural Services, Inc. <br />KEY "AG ® 114 Shady Lane • Macomb, IL 61455 • (309) 833 -1313 <br />bucket auger for the final 12 inches. The samples from both the pit face (54 -60 inches) and <br />bucket auger (60 -72 inches) will be thoroughly mixed and a subsample will be obtained for <br />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). Similar to the Undisturbed Native Soil sites the <br />random samples were first stratified within the "redistributed (See Map 2.04.9 -3)" areas and <br />then randomized within those strata. The strata were defined by breaking the redistributed <br />area into three segments. <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 />Stockpiled Soil Resource Evaluation <br />Ten sampling locations were selected for the larger stockpiled soil resource piles due to their <br />relatively large surface area (i.e. greater than 5 acres) and we determined that 10 soil boring <br />locations could be safely placed on these stockpiled soil resource piles. On the smaller <br />stockpiled soil resource piles it was determined that five samples could adequately describe the <br />material and provide us the ability to always maintain a safe work environment. The sampling <br />locations were random placed on the surface of the stockpiled soil resources to ensure that all <br />areas of the stockpiled soil resource adequately represented. Sampling locations were not <br />placed on side slopes due to limited access and safety concerns. <br />The borings will be conducted so that the entire depth of the material is evaluated. The soil <br />borings will be performed using a Geoprobe® (or similar device) direct push device. All <br />collected soil samples from the Stockpiled Soil Resources will be collected in <br />intervals not to exceed 5 feet in depth with not less than 4 samples to be <br />obtained from single sampling point (e.g. sample stockpile = 42 feet 9 <br />samples will be obtained; Soil Stockpile = 8 feet 4 samples will be obtained). <br />It is assumed that between 20 and 90 samples will be obtained from each stockpile and be sent <br />to the laboratory for chemical and physical analysis. The analytical results will be statistically <br />reviewed for mean, median, and average deviation. In addition, half of the boring locations <br />holes will be excavated with a backhoe or track hoe to the maximum depth of the reach (not to <br />exceed 20 feet). The excavated material will be visually observed for coarse fragments and <br />other visual indicators of rooting media suitability. In addition the surface of the stockpiles will <br />be visually reviewed for the presence of coarse fragments and other features that may impair <br />reclamation success. <br />Page 4 <br />