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REP08885
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REP08885
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Entry Properties
Last modified
8/24/2016 11:38:39 PM
Creation date
11/26/2007 11:59:45 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981014
IBM Index Class Name
Report
Doc Date
1/23/1992
Doc Name
ENERGY FUELS COAL INC SOUTHFIELD MINE 1990 AHR
Permit Index Doc Type
HYDROLOGY REPORT
Media Type
D
Archive
No
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<br />ENERGY FUELS COAL, INC. <br />SOUTHFIELD MINE <br />ANNUAL REPORT OF INFLOWS, DISCHARGES AND <br />CONSUMPTION OF WATER WITHIN THE MINE <br />1990 AHR <br /> <br />• <br />MINE INFLOWS <br />Ground water inflow quantity to the Southfield Mine is <br />estimated from pump discharge monitoring records for the North <br />Entry Well. The total estimated inflow quantity for the period of <br />this AHR is 20.9 AC-FT, shown on Table 1. Water pumped from the <br />North Entry Well enters the surface water treatment system, shown <br />on Figure 2, then discharged to the stream system. <br />Locations of seeps and inflows are detailed on a mine map <br />included as Plate 1, Field quality and estimated quantity were <br />surveyed at accessible locations referenced on Plate 1 and said <br />data summarized on Table 2. For the period of record, only seeps <br />were observed in t}ie mine similar to the period of the 1989 AHR. <br />Estimated quantities shown on Table 2 are derived from pumping <br />records at sumps used to collect the seep derived inflows. Most <br />of the total mine inflow is thought to enter through fractures <br />connecting the 1st North sump area with adjacent abandoned mine <br />works. <br />Comparison of inflow data with those of previous reporting <br />periods indicate a continuing reduction of inflow quantity and no <br />significant changes in quality. These data suggest that no <br />detrimental effects to ground water inflow are occuring as a <br />result of the mining operations. <br />MINE WATER DISCHARGES <br />Mine water discharges to the stream system for the period of <br />Chis report total approximately 17,2 AC-FT as shown on Table 3. <br />Discharges to the stream system flow through four monitoring <br />points and are measured in accordance with Southfield's Colorado <br />Wastewater Discharge Permit. <br />Discharge water quality data are summarized and shown on <br />Table 4. These data indicate that all discharges were within <br />quality parameter limitations required by the discharge permit. <br />Southfield's water handling <br />provide effective treatment and <br />surface stream system. <br />and treatment system continues to <br />is not adversely impacting the <br />WATER BALANCE AND CONSUMPTIVE USE <br />
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