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X <br />Parameter <br />Measurement Values Number <br />of <br />Minimum Maximum Average Analyses <br />Analytical Method <br />Std. Methods 19",20t' <br />edition or EPA <br />Detection <br />Limit/Quantitation <br />Level <br />Sulfate <br />SM 4500-SO4 C/D <br />/200 pgA <br />Alkalinity as CaCO3 <br />SM 2320 B <br />/5 mg/L as CaCO3 <br />X <br />Arsenic(total) <br /><1.4 ug/L <br />EPA 200.8 <br />0.1/0.5 pg/I <br />Barium (total) <br />EPA 200.8 <br />0.5/2 pgA <br />X <br />Cadmium (total) <br />.4 ug/L <br />EPA 200.8 <br />.05/.25 pg/I <br />X <br />Chromium (total) <br /><4.7 ug/L <br />EPA 200.8 <br />0.2/1 pgA <br />X <br />Copper (total) <br />6.55 ug/L <br />EPA 200.8 <br />0.4/2 pgA <br />X <br />Iron (total) <br />127, ug/L <br />EPA 200.7 <br />12.5/50 pg/I <br />X <br />Lead (total) <br />.8 ug/L <br />EPA 200.8 <br />0.1/.5 pg/I <br />Manganese (total) <br />EPA 200.8 <br />0.1/0.5 pg/I <br />X <br />Mercury (total) pg/L <br /><.0.2 ug/L <br />EPA 1631E <br />0.2/0.5 pg/I <br />Molybdenum(total) <br />EPA 200.8 <br />0.1/0.5 pg/I <br />X <br />Nickel(total) <br />13.4 ug/L <br />EPA 200.8 <br />0.1/0.5 pg/I <br />X <br />Selenium (total) <br /><2 ug/L <br />EPA 200.8 <br />1/1 pgA <br />X <br />Silver (total) <br />4.7 ug/L <br />EPA 200.8 <br />.04/.2 pg/I <br />X <br />Zinc (total) <br />317 ug/L <br />EPA 200.8 <br />0.5/2.5 pg/1 <br />Detection level (DL) or detection limit means the minimum concentration of an analyte (substance) that can be measured and reported with a 99% confidence <br />that the analyte concentration is greater than zero as determined by the procedure given in 40 CFR part 136, Appendix B. <br />Ouantitation Level (OL) also known as Minimum Level of Quantitation (ML) — The lowest level at which the entire analytical system must give a recognizable <br />signal and acceptable calibration point for the analyte. It is equivalent to the concentration of the lowest calibration standard, assuming that the lab has used all <br />method -specified sample weights, volumes, and cleanup procedures. The QL is calculated by multiplying the MDL by 3.18 and rounding the result to the <br />number nearest to (1, 2, or 5) x 10, where n is an integer. (64 FR 30417). <br />ALSO GIVEN AS: <br />The smallest detectable concentration of analyte greater than the Detection Limit (DL) where the accuracy (precision & bias) achieves the objectives of the <br />intended purpose. (Report of the Federal Advisory Committee on Detection and Quantitation Approaches and Uses in Clean Water Act Programs Submitted to <br />the US Environmental Protection Agency December 2007). <br />ECY-040-179 (rev. 08/2012) Page 11 of 21 <br />