REP51352 - Laserfiche WebLink

Home Browse Search

SPOIL SPRING MONITORING ' A monitoring program was initiated in 1986 and will be conducted annually until such time as the monitoring requirement is eliminated. As per the ' approved plan the annual mine wide survey is conducted during May, and springs are measured for flow and field parameters. If a spring is discharging 35 gallons per minute or greater then it will be monitored throughout the remainder of the year in accordance with the monitoring plan. ' Flows The field data for the May 1988 spoil spring monitoring program is presented on Table 49. A Plot of the historic flow data for Station 114 is presented on Figure 42. No significant spoil springs were observed at Mine 2. The ' flow data indicates that the spoil springs follow the same pattern a s the surface runoff: very low flow during most of the year and a very rapid ' increase in flow during the spring runoff followed by a moderately rapid decrease in flow. Water Quality 1 1 The summary of the May 1988 spoil spring field data is presented on Table 49. The surmnary of the water quality data for Station 114 is presented on Tables 54 and 55. Additional spoil spring data for Mine 1 is presented on Tables 50 and 51 for Mine 1 and Tables 52 and 53 for Mine 2. Plots of the historic water quality data for Station 114 are presented on Figures 43 and 43A. The data indicates that while the field conductivity level of the Mine 1 spoils spring flow may approach 4600 umhos/cm the average value is approximately 3300 umhos/cm during spring runoff. The average value is higher due to low flow periods of the year. During the winter when Foidel Creek is dominated by the spoil spring and underground mine discharges, the Creek's dissolved solids level approaches that of the spoil springs. The dissolved solids levels of Station 114 follows the same pattern as the creek because they are both influenced by the same climatologic patterns. Other ' - 8 -