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GROUND ZERO ANALYSIS, LNC. Q Y Control/Quality uality Assurance Plan <br /> Q <br /> 3.0 QUALITY CONTROL FIELD SAMPLES <br /> A QC program independent from the laboratory's program will be instituted as required. The <br /> program would entail "blind" submittals to the laboratory of blank and duplicate samples. Spiked <br /> samples may also be submitted from the field where appropriate. The laboratory in-house QC <br /> program will include analysis of spiked samples. All QC samples will be assigned independent <br /> sample numbers and made indistinguishable from non QC samples. <br /> When sampling groundwater, travel blanks will be used to detect the introduction of <br /> contaminants during transportation from the field to the laboratory. The travel blanks will be <br /> provided by the analytical laboratory. They will be taken to the field and accompany the <br /> collected groundwater samples to the laboratory for analysis. The blanks will consist of <br /> deionized water or analytically confirmed organic-free water. The blank is numbered, packaged, <br /> and sealed in the same manner as the other samples. <br /> When required, ten percent of the water samples submitted to the laboratory for analysis will be <br /> duplicates. Water sample duplicated will be created filling two sample bottles from the well <br /> bailer. If more than one bailer volume is required, each bailer volume will be split between <br /> containers. <br /> 4.0 SAMPLE PRESERVATION <br /> Sample containers will be pre-cooled and transported to the site in the cooler. All samples will <br /> be preserved as indicated on Table 1 and placed in a refrigerated container immediately after <br /> collection. Chemical ice sealed in plastic will be used to cool and maintain samples at a <br /> temperature of approximately 4C. A high-low thermometer will accompany the samples to <br /> document transport conditions. Further discussion of sample preservation is included in the <br /> sampling protocols (Section 11 and 12). <br /> 5.0 CHAIN OF CUSTODY PROCEDURES <br /> 5.1 Sample Labels <br /> Each sample container will be labeled prior to filling to prevent misidentification. The label will <br /> contain at least the following information: <br /> - Sample number which uniquely identifies the sample <br /> - Project title or number <br /> - Location or sample collection <br /> - Soil boring or well number, as applicable <br /> - Name of collector <br /> - Date and times of collection <br /> - Type of analysis requested <br /> G:\GROUNDZE\QAQC\QAQC.doc <br /> 2 <br />