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1.1.4 Groundwater Monitoring Frequency <br />Groundwater monitoring will be conducted quarterly for five quarters to provide sufficient data for <br />statistical analysis of baseline conditions. Following the initial five quarters, groundwater will be <br />monitored annually during the non - producing phase and semiannually during the active mining phase of <br />operations. The sampling frequency is shown in Table 1. <br />Table 1: Groundwater Monitoring Frequency <br />1. 1. S Groundwater Sampling Procedures <br />Groundwater sample collection, sample handling, laboratory analysis, and field data collection are <br />conducted in accordance with strict environmental protocols for water quality sampling. All field <br />sampling instruments will be decontaminated and calibrated according to manufacturers' specifications <br />prior to use. <br />A general site inspection will be performed upon arrival at each monitoring well, and comments regarding <br />site conditions will be recorded on the field sampling sheet. Depth to water will be measured to the <br />nearest one -tenth of a foot from the top of the well- casing using an electrical water level sounder before <br />purging and sampling the well. The water level sounder will be cleaned regularly with an environmental <br />grade detergent (Alquinox or Liquinox) before use. All parts of the sounder that will contact groundwater <br />will be rinsed with distilled water before placement in the well. <br />Groundwater purging and sampling will be performed according to standard environmental protocols. <br />For conventional purging, a minimum of three well volumes will be purged before collecting the sample. <br />The pH, specific conductance, and temperature of discharged water will be monitored during purging and <br />recorded on the field sampling record. Well purging will be sufficient when at least three volumes have <br />been purged, the water is clear without visible turbidity, and successive measurements for field <br />parameters vary by less than ten percent. For very low volume wells, the wells may be pumped or bailed <br />dry and allowed to recover overnight before collecting the sample. In this case, purging of a minimum of <br />three well volumes would not be required. Dedicated sampling pumps and low flow (micro - purge) <br />sampling methods may also be used to collect groundwater samples. <br />Only certified clean bottles will be used for samples. Samples for dissolved constituents will be field <br />filtered (0.45 µm) and preserved immediately or will be unfiltered/unpreserved in the field and sent to the <br />laboratory for filtration. If a sample for dissolved constituents is not filtered in the field, an acid <br />QUARTERLY <br />SEMI - ANNUAL <br />ANNUAL <br />QUARTER MONTHS <br />SAMPLING <br />SAMPLING <br />SAMPLING <br />Water Water <br />Water Water <br />Water Water <br />Level Quality <br />Level Quality <br />Level Quality <br />January <br />1st Qtr (Winter) February <br />✓ ✓ <br />✓ <br />✓ <br />March <br />April <br />2nd Qtr (Spring) May <br />✓ ✓ <br />✓ ✓ <br />✓ ✓ <br />June <br />July <br />3rd Qtr (Summer) August <br />✓ ✓ <br />✓ <br />✓ <br />September <br />October <br />4th Qtr (Fall) November <br />✓ ✓ <br />✓ ✓ <br />✓ <br />December <br />1. 1. S Groundwater Sampling Procedures <br />Groundwater sample collection, sample handling, laboratory analysis, and field data collection are <br />conducted in accordance with strict environmental protocols for water quality sampling. All field <br />sampling instruments will be decontaminated and calibrated according to manufacturers' specifications <br />prior to use. <br />A general site inspection will be performed upon arrival at each monitoring well, and comments regarding <br />site conditions will be recorded on the field sampling sheet. Depth to water will be measured to the <br />nearest one -tenth of a foot from the top of the well- casing using an electrical water level sounder before <br />purging and sampling the well. The water level sounder will be cleaned regularly with an environmental <br />grade detergent (Alquinox or Liquinox) before use. All parts of the sounder that will contact groundwater <br />will be rinsed with distilled water before placement in the well. <br />Groundwater purging and sampling will be performed according to standard environmental protocols. <br />For conventional purging, a minimum of three well volumes will be purged before collecting the sample. <br />The pH, specific conductance, and temperature of discharged water will be monitored during purging and <br />recorded on the field sampling record. Well purging will be sufficient when at least three volumes have <br />been purged, the water is clear without visible turbidity, and successive measurements for field <br />parameters vary by less than ten percent. For very low volume wells, the wells may be pumped or bailed <br />dry and allowed to recover overnight before collecting the sample. In this case, purging of a minimum of <br />three well volumes would not be required. Dedicated sampling pumps and low flow (micro - purge) <br />sampling methods may also be used to collect groundwater samples. <br />Only certified clean bottles will be used for samples. Samples for dissolved constituents will be field <br />filtered (0.45 µm) and preserved immediately or will be unfiltered/unpreserved in the field and sent to the <br />laboratory for filtration. If a sample for dissolved constituents is not filtered in the field, an acid <br />