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Water Quality Monitoring Plan Climax Molybdenum Company <br /> Version:R4 Permit No. M-1977-493 <br /> 7.0 SAMPLING AND ANALYTICAL METHODS <br /> Groundwater and surface water samples will be collected and analyzed following the procedures described <br /> in the sections below. <br /> 7.1 Sampling Methods <br /> Groundwater and surface water sampling will be performed in accordance with Climax Standard Operating <br /> Procedures. <br /> 7.2 Analytical Methods <br /> Tables 7-1 and 7-2, below describe the analytical parameters, methods, detection limits and holding times <br /> for the groundwater quality samples and surface water quality samples, respectively. For reference, Tables <br /> D-1 and D-2 in Appendix D present the analytical methods for baseline parameters for groundwater and <br /> surface water monitoring in the event that a plan for increased monitoring (per Section 5.2.2 or 6.3.2) <br /> includes the analyses of additional parameters for comparison to the baseline data for a particular locations. <br /> Table 7.1 —Groundwater Monitoring Analytical Methods <br /> Detection Limit <br /> Analytical Parameter EPA Method (mg/L) Hold Time <br /> Indicator Parameters <br /> Cadmium,dissolved M200.8 ICP-MS 0.0001 6 months <br /> Copper,dissolved M200.8 ICP-MS 0.0005 6 months <br /> Iron,dissolved M200.7 ICP 0.02 6 months <br /> Manganese,dissolved M200.7 ICP 0.005 6 months <br /> Molybdenum,dissolved M200.8 ICP-MS 0.0005 6 months <br /> Zinc,dissolved M200.7 ICP 0.01 6 months <br /> pH(field) SM4500-H+ 0.1 NA <br /> Sulfate(SO4) D516-02/-07-Turbidimetric 1 28 days <br /> Total Dissolved Solids(TDS) SM2540C 10 7 days <br /> Fluoride,dissolved(Arkansas POC SM450OF-C 0.05 6 months <br /> Wells Only) <br /> EPP-Appendix C May 2018 33 <br />