REP08363

• Permit No: C1981014
• IBM Index Class Name: Report
• Doc Date: 10/22/1993
• Doc Name: 1992 AHR
• Annual Report Year: 1992
• Permit Index Doc Type: HYDROLOGY REPORT
• Media Type: D
• Archive: No

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• The total water quantity discharged during the reporting'
period increased substantially as compared to the period. Thisi
increase is a direct result of the high precipitation received ati
the mine site mentioned in the previous section. During August,;
1992, at least two 10 year, 24 hour events were measured ands
documented by mine personnel.
3. Water Balance and Consumptive Use
Water consumptively used by the mine for the reporting period
is estimated at 34.4 AC-FT. Consistent with previous reporting,
periods, most of Southfield's consumptive use applies to the;
preparation plant operation and to underground dust suppression.
Elements of consumptively used water are summarized and shown in
detail on Table 7. Consumptive use for the preparation plant and
pond evaporation specifically are summarized on Table 5 and Table:
6, respectively.
Water balance within the mine is a comparison of the;
consumptive use of the operation and the estimated input and output'
water in the water handling system. Water pumped into the system
from the Corley Mine Well (refer to Table 2A) and the North Well
totalled 48.3 AC-FT during the reporting period. The estimated
consumptive use during the corresponding period was 34.4 AC-FT.'
Water discharged from the water handling system via Pond 3 to
outfall 005 was approximately 8.9 AC-FT. This comparison of input,.
consumptive use, and discharged water quantities show a reasonable'
water balance within the mine.