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SPOIL_SPRING MONITORING ' A spoil spring 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 will be measured for flow and field ' parameters. If a spring th it ill b it d is discharging th h t th 35 gallons per minute i d f th i or greater d e mon ore en w roug ou e rema n er o e year n accor ance with the monitoring plan. 1 Flows ' The field data for the May 1989 spoll 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 as 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 ' The summary of the May 1989 spoil spring field data is presented on Table 49. The summary of the water quality data for Station 114 is presented on fables 54 arrcl 55. Additional spoil spring data for Mine 1 is presented on ' Tables 50 arrd 51 for Mine 1 and Tahles 52 and 53 for Mine 2. Plots of the Iristorfc water quality data for Station 114 are presented on Figures 43 and 44. 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 apprnxirmtely 3400 nmhos/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 sluing and underground mine discharges, the (:reek's dissolved solids level approaches drat 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. I ' - 8 -