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HYDRO24096
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HYDRO24096
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Entry Properties
Last modified
8/24/2016 8:44:19 PM
Creation date
11/20/2007 4:22:15 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1980007
IBM Index Class Name
Hydrology
Doc Date
11/1/2004
Doc Name
Biomonitoring Report Dated September 1, 2004
From
SeaCrest Group
To
Mountain Coal Company
Permit Index Doc Type
DMR’s
Media Type
D
Archive
No
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Mountain Coal Company CO - 0038776 SCG Project No.: 304204 <br />Site: West Elk Mine <br />Abstract of Results <br />Test Concentrations: <br />Control (0), 1.9%, 12.5%, 25%, 50%, 100% <br />Number of Organisms/Concentration: 20 for Daphnia magna <br />Replicates at each Concentration: 4 <br />Daphnia magna <br />Test vessel size 30m1 <br />Exposure volume 15m1 <br />LC50's 73.5% <br />Pass/Fail Status FAIL <br />Temperature Range (°C) 19.0-20.8 <br />Dissolved Oxygen Range (mUl) 6.9-8.2 <br />pH range during test 8.2-9.1 <br />Control <br />100% <br />Alkalinity (mg/1 as CaCo,) 67 2192 <br />Hazdness (mg/1 as CaCo,) 90 45 <br />Total residual chlorine (mg/1) N/A <0.01 <br />Total ammonia in effluent (mg/1) N/A <1.0 <br />The SeaCrest Group, LLC 0. <br />
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