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Kennedy.lenks Consultants <br /> 14. As a field screening procedure (if applicable), at each sampling interval put the soil <br /> from one of the brass liners into an airtight container and allow it to equilibrate. <br /> After this, use an OVA to monitor the headspace in the container. If significant <br /> organic vapors are detected with the OVA, save the appropriate brass sample liners <br /> for potential laboratory analysis. <br /> 15. Complete chain-of-custody forms in the field and transport the samples in insulated <br /> containers, at an internal temperature of approximately 4°C, to the selected <br /> laboratory. <br /> 16. If applicable, as described in the site safety plan, use an OVA to analyze in situ air <br /> samples from the breathing zone, the inside of the augers or casing, and other <br /> locations as necessary. <br /> EQUIPMENT CLEANING <br /> 1. Prior to drilling each boring, steamclean downhole equipment (augers, well casing, <br /> sampler). <br /> 2. Before collection of each drilling sample, steamclean or wash sampling equipment <br /> (sampler and brass liners) with a brush, in a solution of high purity phosphate-free <br /> soap and potable water. Rinse the equipment with potable water and methanol <br /> and/or 0.1 N nitric acid, as appropriate. Follow this with double-rinsing using distilled <br /> water. <br /> 3. Before leaving the site at completion of drilling, steamclean downhole equipment <br /> and vehicles that require cleaning. <br /> INVESTIGATION-DERIVED RESIDUALS <br /> Place soil cuttings and other residuals in appropriately labeled containers for disposition <br /> by the client. All soil samples transported to the laboratory must be returned to the <br /> client for disposition. Kennedy/Jenks Consultants is available to assist the client with <br /> options for disposition of residuals. <br /> i\job\96\966070.01\workplan\append-b.doc B-3 <br />