Laserfiche WebLink
conditions, to be used to establish baseline levels for input into the respiratory protection <br /> selection process. The Project Safety Officer may also decide to perform perimeter <br /> monitoring of downwind air quality conditions during significant surface disturbances. <br /> B. Action Levels <br /> If it is determined based on PID readings that total hydrocarbon levels in the work area reach <br /> 10 ppm in the breathing zone for 5 minutes, half mask respirators with organic vapor <br /> cartridges will be required. <br /> If PID 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 /> 6.0 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 /> 3051351D/SSP2 6 November 2, 1995 <br />