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HYDRO22581
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HYDRO22581
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Last modified
8/24/2016 8:43:37 PM
Creation date
11/20/2007 3:07:09 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1980007
IBM Index Class Name
Hydrology
Doc Date
5/2/2007
Doc Name
1st Quarter 2007 Review Letter
From
Mountain Coal Company, LLC
To
WQCD
Permit Index Doc Type
DMR’s
Media Type
D
Archive
No
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Enviro-Chem Analytical, Inc. <br />685 West Gunnison Avenue, Suite 108 <br />Grand Junction, CO 61505 <br />TABLE 2. Initial Chemistry Ranges for Fathead Minnow <br />96-hour Acute Toxicity Tests Conducted with <br />West Elk Mine Effluent -Test Dates Jan. 16-20, 2007 <br />Chronic Toxicity Test <br />West Elk Mine -Jan. 2007 <br />2 species <br />Outfall 017 <br />E uent Conc. <br />(%) <br />pH D.O. <br />(mglL) Temperature <br />(C) Conductivity <br />{umhos/cm) Alkalinity <br />(mg/L) Hardness <br />{mg1L CaC03) <br />MHW Control 7.47 8.7 20 302 79.8 80.5 <br />6.50% 7.85 8.9 20 840 NM NM <br />13.00°~ 8.13 8.1 20 1180 NM NM <br />25.00% 8.41 9.3 20 1380 NM NM <br />50.00% 8.76 9.5 20 2450 NM NM <br />100.00°~ 8.16 9.6 20 3346 1902 26.97 <br />NM =Not Measured <br />
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