Laserfiche WebLink
• 1994 Annual Hydrologic Report <br />Page 3 <br />detail in the Mine Water section of this report. As with other <br />winters, in order to avoid freezing problems only enough water to <br />supply the preparation plant is pumped from the mine. Data pages <br />SD-7 and 8 show the results of weekly monitoring on this point. <br />The permit renewal called for annual full suite analysis of the <br />mine discharges. This Year's full suite results are shown on data <br />page SN-3. Table 594-2 has been prepared to give a statistical <br />analysis of information taken at this site since 1979. Diagram <br />594-1 is a graph relating TDS to time and incorporating a Lowess <br />Smooth Plot. This plot was prepared using a "nearness" factor of <br />0.5 opposed to the 1.0 that was used for the 1993 report. <br />Discharge point 002 is water siphoned from our former NW Intake <br />Portal of the Roadside South Portals. Mine inflows that are not <br />used underground or pumped to the preparation plant are routed to <br />an abandoned portion of the mine for discharge from this point. <br />Flow information for this site is discussed in the Mine Water <br />section of this report. Data pages SE-2 thru 4 include a listing <br />of water quality monitoring performed at this site during the Year. <br />• Data page SO-3 presents a full suite analysis performed on samples <br />collected at this site. The TDS continued to drop during the Year <br />but by only about 10%. This trend is expected to stabilize at some <br />TDS level between 1000 and 1500 MG/L. Table 594-3 is a statistical <br />summary of sampling since 1979. Diagram 594-2 was prepared to show <br />a Lowess Smooth Plot through the TDS information. The source of <br />water for this discharge point has varied over time, therefore <br />information prior to December 1992 may not be representative of <br />future trends. <br />Discharge point 003 was utilized for discharging water pumped out <br />of the old Cameo Mine and has not been used since 1979. There is <br />no new information for this site this Year. <br />Discharge point 004 continued to be used all year to discharge from <br />the Roadside North Portal. Flow information is given in the Mine <br />Water section of this report. A listing of weekly monitoring <br />results is given on data pages SF-12 and 13 and result of the <br />annual full suite analysis is presented on data page SP-3. Table <br />594-4 is a statistical summary of water quality data collected <br />since 1979. Diagram 594-3 show a Lowess Smooth Plot {nearness = <br />0.5) through historic TDS data on this site. The wide variation in <br />TDS is a function of the source of the water at the time of <br />discharge. The primary sources are the portal ramp underdrain <br />represented by location 1 for the Roadside North Portal in the Mine <br />Water section, active area mine inflows and sealed area inflows at <br />• location 8. <br />The Whole Effluent Toxicity (WET) tests were continued this Xear. <br />The chronic portion of the testing has been dropped from our CDPS <br />