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• <br />C~ <br /> <br />MONITOR WELL LITHOLOGIC LOG <br />Page Z of Z <br />Monitor Well Nanie G4L-N23(WN0023) Geologic Unit Monitored Overburden, Dakota Coal <br />Drilling Date 04/20/86 Logged By G. lJendt and Underburden <br />Geophysically Logged By None Total Depth Drilled (ft) 31.0 <br />DEPTH (FT) DESCRIPTION AND COMh1ENTS <br />?8.1 - 29.0 SHALE, very dark gray to black, slightly hard to hard, carbonaceou< <br /> few 0.01 foot thick coal streaks, NE <br />?9.0 - 29.6 SAIJDSTONE, light brown grading to light g ray, extremely hard, clear <br /> to white gypsum streak at 29.23 - 29.27, NE <br />29.6 TOTAL SAh1PLE DEPTH <br />31.0 TOTAL DRILL BOLE DEPTH <br /> <br /> Cuttings collected from 0.0 to 14.0 feet, 5', inch diameter hole <br /> 3 inch core from 14.0 to 29.6 feet, 4 7/8 inch diameter hole <br /> Dry hole <br /> NE - Non Effervescent <br /> SE - Slight Effervescent <br /> ME - P;oderate Effervescent <br /> VE - Violent Effervescent <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />D-23 Revised 11/01/86 <br />