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Table 5-1 <br /> Activity Level of Protection <br /> Task Activity Initial Levels of PPE <br /> 1 Mobilization/Demobilization Level D <br /> 2 Utility Survey Level D* <br /> 3 Hydropunch opertion Level D <br /> 4 Soil sampling Mod Level D <br /> 5 Water sampling Mod Level D <br /> 6 Decontammabon of Equipment Level D Mod <br /> 7 Backfillinglgroubrig Level D <br /> As site actnnttes progress,levels of PPF are subject to change or to modification Upgrading ofPPE can occur when action levels are <br /> exceeded or whenever the need arises to protect the safety and health of site personnel Levels of PPE will not be downgraded without <br /> pnor approval from the Program CIH <br /> Table 8-1 <br /> Action Levels to be Observed for Selection of PPE During Site Operations <br /> • Analyte Action Level' I Required Actton2 <br /> When in Level D PPE <br /> Dust i 2 0 mglm3(sustained) Upgrade to Level C <br /> Unknown VOC >5 ppm above background Detector tube for benzene,continue work if no benzene detected <br /> Benzene < 1 ppm s 5 ppm Upgrade to Level C <br /> >5 ppm Stop work,contact CIH3 <br /> 02 z 23 5%ors 20% Stop work,determine cause3 <br />' LEL z 10%of LEL Stop work,determine cause3 <br /> I Fiveexcursions above the action level in any 15 minute period or a sustained reading in excess of the action levels for 5 minutes will <br /> tngger a response <br /> 2 Frequency of airmonitonng may be adjusted by the CIH atter sufficient charactenzatron of site contaminants has been completed, <br /> tasks have been modified,or site controls have proven effective <br /> 3 Contact with the Program CfH must be made pnor to continuance of work The Program CIH may then ingiate integrated air <br /> sampling along with additional engineering controls <br /> BZ denotes breathing zone Levels of PPE shall not be downgraded without authonzation from the Program CIN <br /> 7 <br /> 1 C W bnlwllcmimerckAP.B.Hp.cbe&s,Y r"tLSHSP doc <br /> 712302 <br />