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® KEY TO ABBREVIATIONS and METHOD REFERENCES ' < Less than, When appearing in results column indicates analyte not detected at the value following. This datum supercedes the ' listed Reporting Limit * Reporting Limits are a function of the dilution factor for any given sample Actual reporting limits and results have been multiplied by ' the listed dilution factor Do not multiply the reporting limits or reported values by the dilution factor dw Result expressed as dry weight ' mean Average, sum of measurements divided by number of measurements mg/Kg (ppm) Concentration in units of milligrams of analyte per kilogram of ' sample, wet-weight basis (parts per million) mg/L Concentration in units of milligrams of analyte per liter of sample ' mL/L/hr Milliliters per liter per hour MPN/100 mL Most probable number of bacteria per one hundred milliliters of sample tN/A Not applicable NA Not analyzed ND Not aetected, the analyte concentration is less than the applicable listed reporting limit ' NTU Nephelometric turbidity units RPD Relative percent difference, 100 [Value 1 - Value 21 /mean value ' SNA Standard not available ug/Kg (ppb) Concentration in units of micrograms of analyte per kilogram of sample, ' wet-weight basis (parts per billion) ug/L Concentration in units of micrograms of analyte per liter of sample ' umhos/cm Micromhos per centimeter Method References ' Methods 100 through 403 see "Methods for Chemical Analysis of Water & Wastes", U S EPA, 600/4-79-020, Rev 1983 ' Methods 601 through 625 see "Guidelines Establishing Test Procedures for the Analysis of Pollutants" U 5 EPA, 40 CFR, Part 136, Rev 1988. Methods 1000 through 9999 see "'rest Methods for Evaluating Solid ' Waste", U S EPA SW-846, 3rd edition, 1986 , Rev 1, December 1987 SM see "Standard Methods for the Examination of Water & Wastewater, 17th Edition, APRA, 1989 Revised September, 1993 abb.93