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1 <br /> t <br /> APPENDIX c: PROTOCOL FOR GROUNDWATER SAMPLING (continued) <br /> Label and record distinctive number on Field Notes Sheet and <br /> Sample Custody Form, Appendix ii and I. <br /> 3 Collect 40 mL into each of three VOA bottles to which 6 - 8 drops <br /> k of 6N hydrochloric acid may be added, depending on the <br /> protocol of the analytical laboratory. Be careful not to <br /> f <br /> include any entrapped air or to create an air bubble. Seal <br /> and invert the bottles to examine for air bubbles. If any <br /> are present, discard sample and start again. <br /> F <br /> Label bottles with distinctive numbers (all bottles will have <br /> a <br /> the same number) and record the information on the ! <br /> ' appropriate sheets. Immediately place in a .cooled ice chest. ' <br /> Collect an additional 300-500 mL for field chemical analysis. 3 <br /> Submerge the dissolved oxygen (DO) and CST probes into the well <br /> { or into the beaker containing groundwater and record the <br /> readings on the Field Notes Sheet, Appendix G. Note that . <br /> t prior to taking these readings, the probes must be calibrated ' <br /> ti _ t .. <br /> and those data also recorded, Appendix J. <br /> } <br /> Decontaminate the .probes by washing in dilute detergent, followed <br /> f I <br /> 10 r_l-ases- �_n_-oflzt-led--or di5ti-1-led-water.------ <br /> Remove <br /> d-water.- -Remove Tygon* tubing and discard. <br /> � Disconnect the generator: 3 <br /> t <br />