SITE INFORMATION AND CORRESPONDENCE

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Quality Assurance/Quality Control Plan Page 2 Soil samples will be collected in either 8 -ounce widemouth clear glass jars provided by the laboratory or in clean brass or stainless steel tubes (Table 1). Screw on caps will be fitted with teflon liners. Tubes will tightly capped and sealed. 3.0 QUALITY CONTROL FIELD SAMPLES A QC program independent from the laboratory's program will be instituted as required. The program would entail "blind" submittals to the laboratory of blank and duplicate samples. Spiked samples may also be submitted from the field where appropriate. The laboratory in-house QC program will include analysis of spiked samples. All QC samples will be assigned independent sample numbers and made indistinguishable from non QC samples. When sampling groundwater, travel blanks will be used to detect the introduction of contaminants during transportation from the field to the laboratory. The travel blanks will be provided by the analytical laboratory. They will be taken to the field and accompany the collected groundwater samples to the laboratory for analysis. The blanks will consist of deionized water or analytically confirmed organic -free water. The blank is numbered, packaged, and sealed in the same manner as the other samples. When required, ten percent of the water samples submitted to the laboratory for analysis will be duplicates. Water sample duplicates will be created filling two sample bottles from the well bailer. If more than one bailer volume is required, each bailer volume will be split between containers. 4.0 SAMPLE PRESERVATION Sample containers will be pre -cooled and transported to the site in the cooler. All samples will be preserved as indicated on Table 1 and placed in a refrigerated container immediately after collection. Chemical ice sealed in plastic will be used to cool and maintain samples at a temperature of approximately 4°C. A high -low thermometer will accompany the samples to