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- Barr Engineering Company LOG OF PIEZOMETER <br />BARB (Reference Boring No. B -2) <br />Sheet 1 of <br />Location: West Elk Mine, Somerset, <br />client: Mountain Coal Company <br />CO <br />Barr Project Number: 06/261003 <br />Surface Elevation: 6332.64 <br />Top of Casing Elevation: <br />STRATA <br />PIEZOMETER <br />= <br />o <br />PIEZOMETER CONSTRUCTION DETAILS <br />m <br />DETAILS <br />w � <br />FOR <br />DESCRIPTION W x <br />o <br />g <br />o <br />w <br />VIBRATING -WIRE SENSOR WITH SAND PACK <br />Cl) <br />W <br />PROTECTIVE CASING <br />Diameter: 6" <br />Type: Steel round 5' long <br />0 <br />0.0 <br />Interval: <br />COAL Black, dry coal <br />fragments and dust. <br />PVC <br />5 <br />GROUT <br />Type: Bentonite <br />Interval: 2' - 35' <br />SEAL <br />Type: <br />LEAN CLAY (CL) <br />Interval: <br />Medium grey /brown, 10 <br />slightly moist friable stiff <br />SANDPACK <br />clay with coal <br />Type: <br />fragments, silt and fine <br />sand. <br />Interval: <br />14.0 <br />TVT <br />6318.64 <br />VIBRATING - WIRE TIP <br />Diameter: <br />SILT (ML) Medium grey <br />. <br />150 <br />6317.64 <br />dry silt 15 <br />Type: <br />Serial No.: 99451 <br />SANDSTONE Light <br />; <br />brown with light grey 20 <br />mottling. Primarily fine <br />grained with minor <br />.. <br />medium grains. Minor <br />coal in planes of <br />s weakness. <br />1 <br />1 <br />25 <br />1 <br />... <br />.. <br />Completion Depth: 35.0 <br />Date Started: 6/18/09 <br />LEGEND TPC TOP OF PROTECTIVE CASING <br />Date Completed: 6/18/09 <br />BC BASE PROTECTIVE CASING <br />WATER LEVELS <br />Logged By. BSE <br />EJ FILTER PACK GS GROUND SURFACE <br />Drilling Contractor: H <br />BS BENTONITE SEAL <br />® BENTONITE <br />WATER LEVEL: T DRY ft <br />Drilling Method: HSAIC A/CORE <br />FP FILTER PACK <br />® CEMENT GROUT TVT TOP VIBRATING -WIRE TIP <br />DATE: 09 -21 -2009 <br />Coordinates <br />North: 402983.7 <br />BVT BOTTOM VIBRATING -WIRE TIP <br />® CUTTINGS / BACKFILL TD TOTAL DEPTH <br />TIME: 00:00 <br />East: 1450669.3 <br />10 <br />10 <br />10 <br />alt icb i Cp[CbUrn aNNluNmare uuunuanes. I ne iransmon may De graaual. <br />