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1995 Annual Hydrologic Report <br />• Page 6 <br />eliminated flow at location 20 and decreased the flows at 14 and 5. This sump on the <br />No.3 South Mains continued to be used to supply water to the mining sections and to <br />provide water for dust control and fire fighting. Flow measurements at location 10 were <br />similar to those in 1994 but still high relative to location 5. Water from the No.3 South <br />Mains sump that is not used in the mining cycle is dumped in the 2 South Mains <br />between locations 5 and 10, resulting in higher flows at location 10. Flow from <br />dewatering holes drilled into the 3 West, 8 West and 9 West panels are represented by <br />locations 26, 6 and 15 respectively. Each of these panels represents approximately 25 <br />acres of mining. New locations 32 and 33 were added to characterize adjacent to the <br />No.4 South Mains and inflows in the No.4 South Mains. In most cases the conductivity <br />continued to be similar to previous readings. At location 6 and 15 the conductivity <br />increased when the panels were sealed due to contact with recently exposed rock from <br />the panel caving. The conductivity of water discharging from both has been dropping <br />since then. The mass average pH and conductivity for the inflows was 8.3 and 849 <br />umhos/cm respectively. Using the average pH, conductivity and discharge for 001 and <br />002, the mass average pH and conductivity discharged during the year was calculated to <br />be 7.3 and 2533 umhos/cm. Table M95-3 was prepared to estimate the total inflows <br />• and discharges from the Roadside South Portal but does not include the water consumed <br />for mining purposes as discussed in the Consumptive Use section of this report. For the <br />inflow calculation, an attempt was made to account for water level changes in the old <br />portions of the mine. Negative values of "water level" flow represent periods when the <br />water level was decreasing as a result of discharge being greater than the inflow. The <br />calculated inflows for September were 201.4 gpm which is close to the 201.1 gpm <br />measured. One sample from location 5 was sent to the lab for further analysis. A copy <br />of the analysis is included as data page MA-12. <br />Inflows and conductivity were near normal at the Roadside North Portal this Year. <br />Location 1 is from underdrains in the portal decline and has an alluvial source. The <br />lower conductivity is not unusual for the site and may have been affected by higher river <br />flows in 1995. The higher flow may reflect the difficulty of measurement at this site. <br />Location 7 is no longer accessible due to the area being sealed. Location 8 represents <br />water in an old portion of the mine. Dewatering of this sealed area is random and not <br />measured. Flow at this location is estimated by subtracting the measured inflows from <br />the average September discharge. Location 9 was added to monitor inflows from the <br />No. l West Panel off of the No. 3 North Mains. Water used for consumptive use during <br />the year was not included in the flow measurement. See the consumptive use section of <br />this report for further information, The mass average pH and conductivity for these <br />• inflows was 8.2 and 2288 umhos/cm and the averages for the mine discharge were 8.2 <br />and 2228 umhos/cm respectively. Similar quality measurements between measured <br />