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L low <br /> ► � <br /> 4.3 Field Quality Assurance/Quality Control Procedures <br /> Field quality assurance/quality. control QA/QC procedures include recording all samples in both <br /> the sampler's log book and the field geologist's boring logs; recording all samples on a chain of <br /> custody form that will accompany the samples to the laboratory; and several actions that will <br /> minimize cross-contamination: <br /> • Soil augers will be steam cleaned prior to the start of each new boring; <br /> • The split-spoon sampler will be washed in'a solution of TSP and clean tap water, rinsed <br /> in clean tap water, and final rinsed in distilled water between each sample. <br /> • Clean stainless steel sleeves will be used for each sample. <br /> In addition to a field notebook, which will be used to record the daily log of site activities, the <br /> following forms will be used to record the data generated in the field. <br /> • Inspector's Daily Record of Work Progress: This form will be used to record the names <br /> of project personnel on site, equipment on site, materials delivered to the site, items of <br /> Lwork installed and a daily construction summary; <br /> • Chain of Custody Record: This form will also accompany each shipment of samples to <br /> Lthe laboratory to insure accountability for the samples from the time of collection to the <br /> time they are analyzed; <br /> • Boring Description Log: The field geologist will use this form to record soil types and <br /> 4 other relevant data for each boring; <br /> • Tailgate Safety Meeting: This form is used to record all safety issues that are discussed <br /> by the Site Safety Officer with all personnel prior to work. These issues include hazards <br /> that may be encountered during work, preventive health and safety measures, and <br /> emergency hospital routes. <br /> i <br /> TETRA TECH:Castle Rock Forest Fire Station,Revised Technical Work Plan Page 10 <br />