1988-04-11_PERMIT FILE - C1981008A (6)

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Hole Number: 886E Associated Wells: GW-N30 Date Drilled: 9/9/87 Location: T46N, R15W Drilled By: Bobby Holland SWk, NE$, Sec. 6 Logged By: Gary Wendt Coordinates: N 598,1351 Elevation: 5682' E 1,120,8721 Depth Increment Description of Strata/Lithologic Unit Designation (feet) 19.0 - 28.0 SANDSTONE, light gray to light grayish brown, hard to very hard, NE, well defined yellowish red iron stained bedding planes at 19.0, 19.75, 20.3, and 21.55, soft gray shale streaks and yellowish red iron stains at 20.6 - 20.9, 22.20 - 22.45, 23.35 - 23.60, and 23.98 - 24.04, black organic lamella at 23.60 - 23.95, 0.01 foot clear gypsum between bedding planes at 24.82, 25.45, 26.52, and 28.00, black organic lamella and reddish yellow iron stains at 26.38 - 26.55 and 27.50 - 28.00, Unit 3 28.0 - 31.2 SHALE, sandy, dark gray with light gray mottles, slightly hard to hard, NE, bedding planes at 29.85 and 30.55, soft brown shale at 29.28 - 29.34, slightly hard very dark gray to black carbonaceous shale at 31.0 - 31.2, Unit 4 31.2 - 37.0 COAL, lower Dakota seam, considerable pyrite at 33.1 - 33.7, gray and grayish brown slightly hard to soft sandy shale at 32.2 - 32.4, very dark gray soft to slightly hard carbonaceous shale at 33.0 - 33.1 and 33.7 - 33.9, Unit 5 37.0 - 41.0 SANDSTONE, light gray, very hard, NE, soft gray shale zone at 40.45 - 40.60, Unit 6 41 .0 - 42.0 SHALE, sandy, gray with light gray sandstone streaks, NE, Unit 6 42.0 - 42.8 SHALE, gray, slightly hard to hard, NE, Unit 6 42.8 - 47.0 SANDSTONE, light gray, hard, NE, Unit 6 47.0 TOTAL CORE SAMPLE DEPTH Notes: Ground water encountered at 10.7 feet Chip samples collected with sampling buckets from 0.0 - 12.0 feet utilizing a 5 >4 inch Tricone rock bit 3 inch core barrel with Chris dril bit utilized from 12.0 - 47.0 feet No underburden core samples were collected NE - noneffervescent, SE - slightly effervescent, VE - violently effervescent 6-1-95 Revised 04/11/88