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HYDRO20397
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Entry Properties
Last modified
8/24/2016 8:41:44 PM
Creation date
11/20/2007 1:32:07 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981013
IBM Index Class Name
Hydrology
Doc Date
6/9/1988
Doc Name
NOTIFICATION OF POTENTIAL UPSET CONDITION WYOMING FUEL CO GOLDEN EAGLE MINE PN CO-0033367
From
WYOMING FUEL CO
To
CDOH
Permit Index Doc Type
DMG SAMPLING
Media Type
D
Archive
No
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iiininiiiniuiii <br />999 <br />Wyoming Fudl Compon~ <br />12055 W. Second Place • P.O. Box 15596 • Lakewood, Golorad~ t/215 • Tele~n~ne (3/3) Dt9-s/37 <br />June 6, 1988 <br />Ms. Sandy Marek <br />Engineering Technician <br />Colorado Department of Health <br />4210 East 11th Avenue <br />Denver, Colorado 80220 <br /> <br />JUiJ 91988 <br /> <br />_ IYIINc'p Lt,P~~ <br />Re: Notification of Potential Upset Condit~n~L'4MHTIOh~ DIVIS1pN <br />Wyoming Fuel Company (WFC), Golden Eagle <br />Mine, Permit No. CO-0033367 <br />Dear Ms. Marek: <br />Per our telephone conversation of June 6, 1988 this letter <br />serves as notification of a potential upset cenditicn at the <br />Golden Eagle Mine near Weston, Colorado. <br />WFC has been installing test wells to further characterize <br />the water inflow int• mine workings and reduce methane gas <br />levels. Four wells were completed between April 5, 1988 and May <br />5, 1988. <br />On May 12, 1988, a visible sheen was obse_~ved on the surface <br />of Pond 002. WFC suspects this sheen could have resulted from <br />the drilling fluids used in completing the above re>ferenced <br />wells. Drilling fluids may have entered the mine workings wh ere <br />th ey were subsequently pumped to Pond 002. WFC was and is not <br />treating the mine water in any capacity- <br />In consecuence of these observations, Y7FC initiated a <br />biomonitcring study on May 17, 1988. The results of this study <br />were report e3 to :,rC on or about Play 20, 1988. Pond 002 effluent <br />eahibit~ a 45~ mortality at the 103% concentration .level for <br />Ceriodaphnia. WFC was notified by the consulting laboratory that <br />the May 17, 1988 study was not conducted accordinc Lp current <br />Colorado Department of Health Standards. As such, the laboratory <br />requested k*FC resample so another biomonitoring study could be <br />conducted. <br />WFC re-sampled Pond 002 effluent, Pond 002 influent and <br />PRS-3 (PRS-3 is downstream from the mine water cischarcae in the <br />Purgatoire River). The results of this stud}~ showed mortality cf <br />fathead minnows and Ceriodaphnia at the 1000 concentration level <br />at the inlet and outlet of Pond 002. There was no sicnificant <br />mortality at any of the lower concentrations. There was no <br />significant mortality in the river downstream from the mine water <br />discharge at any concentration level. <br />,. <br />
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