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a <br /> D1. PERSONAL SAFETY <br /> • SITE ENTRY PROCEDURES: <br /> PERSONNEL PROTECTION: <br /> Level of protection: A B C D xx <br /> Modifications: <br /> I. All personnel must wear hard hat, safety shoes, safety <br /> glasses and/or face shield. <br /> 2 . Neoprene gloves and tyvek/saranax suit should be worn if <br /> contact with contaminated water or soil is likely. <br /> 3 . Hearing protection must be worn if noise levels prevent <br /> normal conversation at a distance of three feet. No <br /> smoking, eating, or drinking is allowed on site. <br /> 4 . Respiratory protection is dependent on conditions listed <br /> in next section. <br /> 5. No personnel are to enter or approach any excavation area <br /> where there is a danger of wall collapse or confined <br /> space entry. <br /> Surveillance Equipment and Materials: <br /> Instrumentation Action Level Action <br /> photolonization 5 units or 5 use halfmask <br /> detector (hNu) times background respirator with <br /> (breathing zone) organic cartridges <br /> 1, 000 ppm eliminate all ignition <br /> sources, leave site <br /> until levels are <br /> reduced <br /> oxygen meter <19 .5% oxygen do not enter area or <br /> confined space until <br /> levels are reduced. <br /> explosimeter >10% LEL eliminate all ignition <br /> sources <br /> >20o LEL reduce levels <br /> immediately or leave <br /> site. <br /> 90-096A HSS 5 <br />