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1 <br /> ' In addition, on-site personnel should post the action levels for toxic vapors on the side of the <br /> PID or OVA unit <br /> 4.0 LEVEL D PROTECTION <br /> Sampling activities will be performed in Level D protection Level D protection includes the <br /> ' following <br /> • Cotton coveralls or Tyvek coveralls (as needed) <br /> • Work boots with steel toes and steel shanks <br /> t • Safety glasses or splash goggles <br /> • Hard hat <br /> ' • Work gloves (as needed) <br /> • Disposable booties (as needed) <br /> ' Since there is a possibility of unexpected inhalation of chemical vapors or mists, the ambient <br /> air will be continually monitored with an OVA and OV concentration readings will be recorded every <br /> 30 minutes Site personnel will be prepared to upgrade to Level C protection if OV concentrations <br /> ' increase 5 ppm above background levels <br /> 1 <br /> E - 5 <br /> 1 <br />