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1 <br /> WZI INC <br /> ' Ambient air samples ("blanks') are collected in the field with the minimum of sampling <br /> ' train equipment, then analyzed to evaluate the influence of ambient air conditions on <br /> sample integrity (Ambient air is used to purge the sampling train and in-line <br /> ' monitoring equipment ) <br /> One ambient air sample is included per day of sampling <br /> ' Equipment blanks are collected in the same manner as ambient air samples except <br /> that all tubing and adapters used between sampling points remain in the sampling <br /> ' train The analysis of equipment blanks checks the efficacy of decontamination <br /> (purging equipment to background conditions) between sampling points One <br /> ' equipment blank is included per day of sampling <br /> ' One soil gas split sample will be collected each day and sent to a fixed base <br /> laboratory for analysis to confirm mobile identification of compounds <br /> 1 <br /> 1 <br /> APPENDIX III <br /> ' 12270020 025 13 <br />