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4-17 <br />4.2.3 Groundwater Quality <br />., Six alluvial wells were drilled along East Salt Creek and a regular sampling program was <br />conducted there. Fluctuations were evident and holes were frequently dry. The variability of data <br />collected does not allow for an accurate analysis of seasonal variations. <br />Both surface and groundwater analysis exhibit high total dissolved solids and can be <br />characterized as sulfate bicarbonate waters. Analysis for the period December 1977 through April 1979, <br />shown in Tables 4.2-1 through 4.2-5, indicated that groundwater in the alluvium is a sodium sulfate type <br />containing dissolved solids ranging from 1,000 to 6,000 mg/I. These data suggest an increase in both <br />dissolved solids concentration and sodium sulfate in the downstream direction. Groundwater quality as <br />shown in the above noted tables was established from sampling six alluvial wells as shown on Figure 4.2- <br />2. The six alluvial wells were apparently sealed and eight ground water monitoring wells were <br />subsequently installed. Figure 4.2-2 shows the location of the GW wells to be utilized in future monitoring <br />as describe in Section 4.2.4. Ground water monitoring wells GW-2,4,7 & 8 were sealed in 2007. <br />4.2.4 Groundwater Quality Monitoring Program <br />A water quality monitoring program has been established to develop additional ground water data <br />in the area of the McClane Canyon Mine and to monitor the effect of operations upon the resource. The <br />monitoring program will consist of the following items: <br />Quarterly monitoring of wells GW-1 and GW-9 for Static Water Level, pH, Temperature and <br />Specific Conductance. <br />2. Water quality sampling of mine water discharges as required by NPDES and CDOH permit. <br />3. Monitoring of all non-seep inflows into the mine to include source, quantity, duration and quality (pH, <br />Electrical Conductance and Temperature). <br />4. Monitor quantities of water discharged from the mine, consumed in the mine and imported for use <br />in the mine. <br />Results of the quarterly groundwater monitoring shall be submitted to the Division during the month <br />following the end of that quarter. Results of additional monitoring will be submitted to the Division in an <br />annual hydrological report. The annual report will detail inflows, discharges and consumption of water <br />within the mine and shall be structured around the normal "water year" (October 1 through September 30). <br />The annual report will also include baseline water quality data in addition to the quarterly monitoring data to <br />allow for comparison of baseline and "during mining" conditions. The annual report for the previous water <br />year will be submitted no later than March 31 of each year. <br />Water samples will be collected with a bailer after the depth to water has been measured. All <br />monitoring wells shall be pumped at least once a year and at least one day prior ro sample collection with <br />an air lift or a bailer. <br />Baseline alluvial wells shown in Tables 4.2-1 - 4.2-5 are not the same wells as the GW wells <br />currently being monitored. Baseline data for the GW wells is shown in Table 4.2i. Atypical well completion <br />diagram for the GW wells is shown in Figure 4.1-7 <br />TR-16 M`-Volume 1 (Rev 05/08) <br />