Laserfiche WebLink
checked for headspace, uniquely labeled, placed into an ice chest cooled to less than 6°C, and transported <br />to Pace Analytical under chain of custody protocol. Analytical methods, containers, preservatives, and hold <br />times to be used or that may be used during the groundwater sampling and analysis phase of the scope of <br />work are summarized in Table 1. QAQC procedures used by the laboratory during the groundwater sample <br />analysis are provided in the analytical data results provided by the laboratory. <br />3.0 QUALITY CONTROL FIELD SAMPLES <br />When required, a Quality Control (QC) program independent from the laboratory's program will be instituted. <br />The program will entail "blind" submittals to the laboratory of blank and duplicate samples. All QC samples <br />will be assigned independent sample numbers and made indistinguishable from non -QC samples. <br />Travel Blanks <br />A travel blank will be used to monitor sample contamination during sampling, transport and storage. VOAs <br />containing contaminant -free water will be kept in the cooler throughout the groundwater sample collection <br />and transported with the samples to the laboratory. <br />Duplicate Samples <br />Duplicate samples equal to 10% of the total collected will be submitted to the laboratory to monitor sampling <br />precision. The duplicate sample points will be selected randomly selected. <br />4.0 SAMPLE COLLECTION PROCEDURE <br />During sampling, latex or nitrile gloves will be worn to prevent cross -contamination with other samples. The <br />disposable gloves will be discarded after collecting each sample. Sample containers will be pre -cooled and <br />transported to the site in the cooler. All samples will be preserved and the desired sample mass will be <br />collected in the proper container as indicated on Table 2 and placed in a refrigerated container immediately <br />after collection and maintained at a temperature less than 6 'C. Further discussion of sample preservation is <br />included in the sampling protocols (Sections 9 and 10). <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 contain at <br />least the following information: <br />- Sample number which uniquely identifies the sample <br />- Project title and number <br />- Location of sample collection <br />- Depth of sample collection <br />- Soil boring number <br />- Name of collector <br />- Date and times of collection <br />