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If AID readings indicate total hydrocarbon levels reach 25 ppm in the breathing zone for <br /> 5 minutes, work activities will be suspended until the airborne hydrocarbon concentrations <br /> decrease to less than 10 ppm if airborne levels remain at 25 ppm or more, all work will cease <br /> until all personnel working in the exclusion zone are equipped with full face or if necessary <br /> supplied air respiratory protection including pressure demand air supplied respirators or self <br /> contained breathing apparatus (SCBA) <br /> 60 PERSONAL PROTECTIVE EQUIPMENT <br /> A. Introduction <br /> It is important that personal protective equipment and safety requirements be appropriate to <br /> protect against the potential hazards at the site Protective equipment will be selected based <br /> on the contaminant type(s), concentration(s), and route of entry In situations where the type <br /> of materials and possibilities of contact are unknown or the hazards are not clearly identifiable, <br /> a more subjective determination must be made of the personal protective equipment <br />. A minimum of modified Level D safety equipment and clothing will be required for all <br /> workers and visitors on the site All personnel must be prepared to step up to higher levels of <br /> protective equipment as conditions warrant <br /> B. LEVELS OF PROTECTION <br /> The basic required work uniform for the site is modified Level D protection which will <br /> include <br /> o hardhat <br /> o steel toed boots <br /> o safety glasses <br /> o polyvinyl gloves for handling soil or liquid samples <br /> o neoprene over-loves for handling augers or other contaminated items <br /> 9110081AISSP 7 December 22 1997 <br /> I <br />