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= Barr Engineering Company LOG OF PIEZOMETER <br />(Reference Boring No. B-4) <br />BARR <br />Sheet 2 of 2 <br />Location: West Elk Mine, Somerset, <br />client- Mountain Coal Company <br />CO <br />Barr Project Number 06/261003 <br />Surface Elevation: 6386.90 <br />Top of Casing Elevation: <br />STRATA <br />PIEZOMETER <br />= <br />O <br />m <br />DETAILS <br />W <br />> <br />PIEZOMETER CONSTRUCTION DETAILS <br />DESCRIPTION Lux <br />r <br />J <br />(n <br />w <br />30 <br />35.0 <br />TD <br />6351.90 <br />35 <br />Completion Depth: 35.0 <br />Date Started: 6/22/09 <br />LEGEND <br />Date Completed: 6/22/09 <br />El FILTER PACK <br />WATER LEVELS <br />Logged By: BSE <br />Drilling Contractor: Haztech <br />® BENTONITE <br />WATER LEVEL: -T DRY ft <br />Drilling Method: HSA/CORE <br />® <br />DATE: 09 -21 -2009 <br />Coordinates <br />CEMENT GROUT <br />TIME: 00:00 <br />North: 402656.1 <br />® CUTTINGS / BACKFILL <br />East: 1450507.7 <br />the stratification lines represent appro)dmate boundaries. The transition may be gradual. <br />