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PROJECT: New Elk Coal Mine <br />DWDA - West Portal <br />Started Date /Time: 8 Mar 2012/ 2:30am <br />Completed Date /Time: 8 Mar 2012 / 3:45pm <br />Drilling Contractor: Scott Drilling Inc. <br />Drill Rig Type: Simco Truck Mounted <br />Drilling Method: Solid Stem Auger, 4 inch dia <br />Drillers Name: Scott McCraken <br />SOIL BORING NUMBER: BH -40 <br />Project Manger: J Friedman <br />Logged By: S Mohanty <br />Location: N 1177286.277 E 3147485.335 <br />Surface Elevation (famsl): 7626.2 <br />Total Depth (fbgs): 21.5 <br />Depth to Ground Water (fbgs): Not Encountered= <br />Sample Types: Alluvium - Modified Cal. w /brass liners <br />Bedrock - NA <br />Inches Inches Sample <br />Depth SPT Blows Driven Recovered Depth Lithologic Description <br />(Ft) Blows 16 -in. (inches) (inches) (Ft) (Described Via Cuttings and Continuous SPT Drive Samples) <br />n <br />Sample Types Page No. 1 of 1 <br />SOIL BORING NUMBER: BH -40 BL= brass liner Grab = Large Disturbed <br />ALLUVIUM? <br />CLAY, silty (CL) moderately stiff, moist, dark brown. Approximately 10 to <br />15% silt / fine sand. <br />Grab from <br />cuttings <br />ALLUVIUM <br />(0 to 5') <br />CLAY, silty (CL) moderately stiff to stiff, moist, dark brown. Approximately <br />5 <br />10% or less silt. Sandstone fragments (5 -10mm) observed in cuttings. <br />8 <br />13 <br />18.0 <br />16.0 <br />2 "x4" BL <br />Bedding plane structure observed towards bottom of interval. <br />16 <br />2 "x4" BL <br />Grab from <br />cuttings <br />(5 to 10') <br />10 <br />13 <br />16 <br />18.0 <br />18.0 <br />18 <br />2 "x4" BL <br />— Weathered Bedrock? <br />— Interbedded stiff CLAY and weak SANDSTONE. <br />15 <br />— Clay is interbedded between 2 to 6" thick sandstone layers that are poorly <br />8 <br />- cemnted, coarse grained, reddish grey. <br />12 <br />18.0 <br />18.0 <br />— <br />22 <br />2 "x4" BL <br />— <br />% • BEDROCK <br />20 <br />14 <br />SANDSTONE, weak, poorly cemented, coarse grained, grey. <br />22 <br />18.0 <br />18.0 <br />SPT refusla at 21.5'. Boring backfilled with cuttings. <br />29 <br />2 "x4" BL <br />Sample Types Page No. 1 of 1 <br />SOIL BORING NUMBER: BH -40 BL= brass liner Grab = Large Disturbed <br />