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Analytical Parameter <br />EPA Method <br />Detection Limit <br />Hold Time <br />Arsenic, dissolved <br />M200.8 ICP -MS <br />0.5 ug /L <br />6 months <br />Aluminum, dissolved <br />M200.7 ICP <br />30 ug /L <br />6 months <br />Silver, dissolved <br />M200.8 ICP -MS <br />0.05 ug /L <br />6 months <br />Cyanide, total <br />M335.4 <br />3 to 10 ug /L <br />14 days <br />Mercury, dissolved <br />M245.1 CVAA <br />0.2 ug /L <br />28 days <br />Mercury, total <br />M1631 <br />0.0002 ug /L <br />28 days <br />Selenium, dissolved <br />SM3114B,AA <br />Hydrid <br />1 ug /L <br />6 months <br />Chromium (CrIII + CRVI), <br />dissolved <br />SM3500 Cr -D <br />Colormetric <br />5 ug /L <br />24 hours <br />Total Nitrate + Nitrite as N <br />M353.2 <br />0.02 mg /L <br />28 days <br />Ammonia (NH as N <br />M350.1 <br />0.05 mg /L <br />28 days <br />• <br />Water Quality Monitoring Plan <br />Version: RI <br />Table 6 -3 — Baseline Analytical Parameter Summary <br />Climax Molybdenum Company <br />Permit No. M -1977 -493 <br />6.3 Quality Assurance /Quality Control <br />Climax will ensure data quality through field and laboratory QA/QC procedures, data reporting <br />and evaluation. <br />• 6.3.1 Field Duplicate <br />Field duplicates are co- located samples collected identically and consecutively over a minimum <br />period of time. Field duplicates are sent to the same laboratory and analyzed for identical <br />analytical parameters. One duplicate sample will be collected during each quarterly sampling <br />event. The sample location for the field duplicate shall be selected randomly prior to each <br />sampling event. <br />6.3.2 Laboratory Quality Assurance /Quality Control <br />The laboratory selected to analyze the water samples will operate under an internal quality <br />assurance plan. Laboratory quality control (QC) includes method blanks, analytical duplicates, <br />matrix spikes, matrix spike duplicates, calibration checks, surrogates and laboratory control <br />standards, as required by the referenced analytical method. <br />6.3.3 Data Reporting <br />The analytical reports submitted by the laboratory under this monitoring plan will include, at a <br />minimum, the following information: <br />• A copy of the chain of custody form, including the date of sample receipt; <br />• Sample temperature upon receipt at the laboratory; <br />• Field and laboratory sample identification numbers; <br />• Sampling date and time; <br />• Verification of preservation conditions (if appropriate); <br />EPP — Appendix C <br />August, 2011 23 <br />