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Engineers <br /> Planners <br /> Economists <br /> Scientists <br /> EPA - DEFINED QUALIFIERS (ORGANICS) <br /> Definitions for the EPA-defined qualifiers: <br /> U -- Indicates the compound was analyzed for but not detected. The <br /> number adjacent to the "U" qualifier indicates the practical <br /> quantitation limit (PQL) for that compound. The PQL can vary <br /> from sample to sample depending on dilution factors or percent <br /> moisture adjustment when indicated. <br /> J -- Indicates an estimated value. This flag is used when the mass <br /> spectral data indicates the presence of a compound below the <br /> stated PQL. The "J" qualifier is not used with pesticide <br /> results. <br /> C -- This flag applies to pesticide results only. The "C" flag <br /> indicates the presence of this compound has been confirmed by <br /> GC/MS analysis. <br /> B -- This flag is used when the analyte is found in the associated <br /> blank as well as the sample. This notation indicates possible <br /> blank contamination and suggests the data user evaluate these <br /> compounds and their amounts carefully. <br /> E -- This flag applies to GC/MS only. The "E" qualifier indicates a <br /> compound may be above or below the linear range of the instrument. <br /> If the particular compound level is deemed above the linear <br /> calibration range, then the sample should be reanalyzed at an <br /> appropriate dilution. Therefore, the "E" qualified amount is an <br /> estimated concentration. The results of the dilution will be <br /> reported on a separate Form I and will be flagged with a "D" if <br /> the dilution brings the concentration within proper calibration. <br /> D -- This flag identifies all compounds identified in an analysis which <br /> has been run at a dilution to bring the concentration of that <br /> compound within the linear range of the instrument. "D" qualifiers <br /> are only used for samples that have been run initially with results <br /> above acceptable ranges. For secondary dilutions, the "DL" suffix <br /> is appended to the sample number on the Form I. <br /> A -- Indicates the Tentatively Identified Compound (TIC) is a suspected <br /> aldol-condensation product. <br /> X -- Indicates the compound concentration has been manually modified or <br /> the EPA qualifier has been manually modified or added. <br /> JX -- This value is less than the sample quantitation limit that would <br /> have been displayed for "U" . <br /> 0000111 <br /> CH2M MILL Redding Quality Analytical Laboratories 916.244.5227 <br /> 5090 Caterpillar Road,Redding,California 96003 FAX 916.244.4109 <br />