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~J <br />-6- <br />transitloning Into hard shale bedrock (Test Hole 4) within the north front <br />of the ridge. Laboratory unconfined and direct shear tests together with <br />..~~:~;; <br />.. <br />stn:.: <br />;.fv <br />field penetration tests indicate that the overburden clay and granular soils <br />are relatively stiff and dense and possess moderate shear strength. Free <br />water was not encountered within the proposed cut depth during drilling but <br />was measured In Test Hole 4 at 11 feet several days after. Granular inter- <br />vats such as encountered in Test Hole 4 overlying bedrock could be a potential <br />source for water. <br />The proposed cut adJacent to the north of the coal processing facility <br />• <br />to a maximum depth of 34 feet will generally be In shallow soils urtderlaln by <br />clays tone bedrock. The core recovered from Test Hole 8 shows moderate to low <br />RQD values and indicates moderately low to fair competency of the bedrock <br />together with a highly Jointed network of fractures. These fractures appear <br />to be tight and filled with gypsum below an approximate 24-foot depth. Un- <br />confined compressive and direct shear strength tests Indicate the claystone <br />has a relatively high strength, but typical with clays tones, will slake or <br />weather rapldty upon exposure. Hard shale bedrock was then encountered below <br />an approximate 34-foot depth approximately at the proposed top of rail <br />elevation. Free water was not encountered at Test Hole 8 during drilling but <br />was encountered at the train loadout structure at approximately 4 to 6-foot <br />depth during the previous investigation for the processing facility. Free <br />water was later measured In Test Hole 8 at 37 feet several days following <br />drilling. <br />SITE GRADING <br /> <br />• Considerable site grading will be required to achieve proposed final <br />grade levels. Relatively deep cuts are required in overburden soils and <br />.,.Y~....»s4;:~.. . .-o^-dt."'1;{v, .at. -. _ ~~'' i~)i• a'rc' .~ <br />