Laserfiche WebLink
• There are a few other springs and local permanent "damp spots" in the area; however, <br />their combined flow is normally less than 10 gpm and is therefore not significant. The <br />annual discharges for the #1 Strip Pit are presented in Figure 25 and the 1998 <br />discharge measurements are presented on Figure 26. The discharge from the #1 Strip <br />Pit increased significantly in 1989. This may have been due to seepage from the ditch <br />that conveys the 7 North Angle discharge. The 7 North Angle discharge began in <br />January of 1989. However, discharge rates from 1990 through 1993 are considerably <br />lower and within the range observe during 1982 through 1986. Nevertheless, snowmelt <br />and ditch seepage both appear to have some influence on the Strip Pit discharge, as <br />the discharge generally drops to just a few gpm from January through May with a small <br />peak in March coinciding with spring runoff. <br />• <br />WATER QUALITY <br />The summary of the water quality data for the spring is presented in Tables 31 and 32. <br />A plot of dissolved solids for the #1 Strip Pit is presented in Figure 27 and iron <br />concentrations are presented on Figure 28. Figure 27 indicates that the dissolved solids <br />level of the discharge has increased from an average of approximately 900 mg/I in 1982 <br />and 1983 to almost 1,400 mg/I in 1986, and then decreased to approximately 1,100 mg/I <br />since 1987. The decreasing trend was noted to continue in 1998. Figure 28 illustrates <br />the variable nature of total recoverable iron concentrations in the Strip Pit discharge. <br />During 1998, these levels occurred within normal ranges established for this site. <br />• c-a,~,a ,89BAHR Page 11 <br />