Laserfiche WebLink
= Barr Engineering Company LOG OF PIEZOMETER <br />(Reference Boring No. B -8) <br />BARR <br />Sheet 1 of 2 <br />Location West Elk Mine, Somerset, <br />Client: Mountain Coal Company <br />CO <br />Barr Project Number. 06/261003 <br />Surface Elevation: 6779.33 <br />Top of Casing Elevation: <br />STRATA <br />PIEZOMETER <br />= <br />o <br />PIEZOMETER CONSTRUCTION DETAILS <br />F- _ <br />Co <br />DETAILS <br />w � <br />< r FOR <br />DESCRIPTION a <br />o <br />° <br />W <br />VIBRATING -WIRE SENSOR WITH SAND PACK <br />PROTECTIVE CASING <br />Diameter- 6" <br />Type: 5' by 6" steel <br />Interval: 37" to -23" <br />0 <br />CLAY (CL -CH) Medium <br />brown slightly moist clay <br />with silt, sand and <br />3.34" <br />gravel and rock <br />fragments. <br />Slope Indicator inclinometer <br />5 <br />GROUT <br />Type Portland & bentonite gel <br />Interval: 0' -35' <br />SEAL <br />Type <br />Interval: <br />x x <br />SANDPACK <br />SILTSTONE Light grey 10 <br />dry very fine grey <br />x x <br />siltstone. <br />x x <br />Type: <br />x x <br />x x <br />Interval: <br />x x <br />x x <br />VIBRATING -WIRE TIP <br />x x <br />Diameter: 0.75" <br />x x <br />Type: Slope Indicator <br />15 <br />CLAY (CL -CH) Medium <br />Serial No.: 99453 <br />brown wet clay with silt, <br />sand and gravel and <br />17.0 <br />TVT <br />6762.33 <br />roots. <br />18.0 <br />6761.33 <br />x x <br />SILTSTONE Medium 20 <br />brown /grey <br />x x <br />x x <br />x x <br />x x <br />x x <br />x x <br />25 <br />x x <br />x x <br />x x <br />x x <br />x x <br />x x <br />x x <br />x x <br />x x <br />x x <br />SANDSTONE <br />Light - medium grey <br />sandstone interbedded <br />with siltstone. <br />Completion Depth: 35.0 <br />Date Started: 6/24/09 <br />LEGEND TPC TOP OF PROTECTIVE CASING <br />Date Completed: 6/24/09 <br />BC BASE PROTECTIVE CASING <br />WATER LEVELS <br />Logged By: BWL <br />El FILTER PACK GS GROUND SURFACE <br />Drilling Contractor- Haztech <br />® BENTONITE BS BENTONITE SEAL <br />WATER LEVEL: Y DRY ft <br />Drilling Method: HSA/CORE <br />FP FILTER PACK <br />M CEMENT GROUT TVT TOP VIBRATING -WIRE TIP <br />DATE: 09 -21 -2009 <br />Coordinates <br />North: 401418.0 <br />BVT BOTTOM VIBRATING -WIRE TIP <br />® CUTTINGS / BACKFILL TD TOTAL DEPTH <br />TIME: 00:00 <br />East: 1450558.8 <br />fhe stratification lines represent approbmate boundaries. The transition may be gradual. <br />