REP50966 - Laserfiche WebLink

Home Browse Search

ENERGY FUELS COAL, INC. SOUTHFIELD MINE QUARTERLY HYDROLOGY MONITORING PROGRAM DATA SUMMARY 1991 AHR Tbis report presents all surface water and ground water data collected at the Southfield Mine for the period July 1, 1991 through June 30, 1992, as required by the approved hydrology monitoring program. These data are summarized on attached tables and a brief review of the data is presented below. SURFACE WATER Field and laboratory data collected from monitoring points on Newlin, Oak, Magpie and Second Alkali Creeks are shown on water quality Table nos. 15, 16, 17 and 18. In addition, streamflow measurements are summarized on Table 14. These tables include all data available from the operator's files through the period of this report. All field data end sample collection was performed by Southfield personnel and by the previous mine operator, Dorchester Coal Company (DCC). Similar to the previous annual report period, dry streambed conditions prevailed at the four above referenced monitoring locations. Streamflow occured only in Newlin Creek and Oak Creek during the fourth quarter of 1992, and flows were minimal as shown on Table 14. The lack of any significant flow at all the monitoring locations is consistent with low snowpack levels and infrequent thunderstorm events. quality data collected during the reporting period indicate no significant changes in water quality as compared to previous reporting periods, however the low streamflows may not provide comparable data. The above mentioned dry conditions resulted in no sample being taken from Second Alkali Creek during the reporting period, and thus EFCI could not comply with Stipulation No. 15 of the perotit application. Given the current wnfiguration of the mine and projected mine plans, EFCI would request consideration to discontinue monitoring at Second Alkali Creek along with committing to restarting monitoring if mining takes place under the creek's drainage area. During the period of this report, EFCI discontinued mining in the western area of the mine underlying Second Alkali Creek and has completely and permanently sealed Wat area of the mine. In the vacinity of the Second Alkali Creek drainage basin, actual mined area was far less than projected on the approved mine map (Map 17) and conditions allowed only partial extraction of the coal reserves. The required surface water monitoring program effectively monitors the impacts of mining operations on the surface water system adjacent to the mine and loadout facilities. Monitoring data through the period of this report indicate no significant impacts to surface water as a result of mining operations. GROUND WATER . Field and ]aboratory data collected from five monitoring wells, MW-8, M-10, MW-16, MW-23 and MW-65 are summarized on tables and graphs. Data included with this report include all data available from