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Entech Analytical Labs, Inc. <br /> 1 3334 Victor Court • Santa Clara, CA 95054 • (408) 588-0200 • Fax (408) 588-0201 <br /> ' STANDARD LAB QUALIFIERS (FLAGS) <br /> ' All Entech lab reports now reference standard lab qualifiers. These qualifiers are noted in the adjacent <br /> column to the analytical result and are adapted from the U.S. EPA CLP program. The current qualifier <br /> ' list is as follows: <br /> Qualifier Description <br /> (Flag) <br /> U Compound was analyzed for but not detected <br /> 7 Estimated value for tentatively identified compounds or if result is below PQL but above MDL <br /> ' N Presumptive evidence of a compound(for Tentatively Identified Compounds) <br /> B Analyte is found in the associated Method Blank <br /> E Compounds whose concentrations exceed the upper level of the calibration range <br /> D Multiple dilutions reported for analysis; discrepancies between analytes may be due to dilution <br /> ' X Results within quantitation range; chromatographic pattern not typical of fuel <br /> Y PQL is reported below MDL but verified against a standard analyzed at the client requested reporting <br /> limit of 0.5 ppb <br /> ' C Reported results affected by contaminated reagent materials. See narrative for father explanation <br /> 1 <br /> ' Environmental Analysis Since 1983 <br />