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Smoke Inhalation Hazard Controls: <br />Site Specific Controls: <br />Respirator Change Out: <br />The project team shall ensure that the monitor used is calibrated, maintained, and used, including the <br />use of necessary accessories, in accordance with the manufacturer's instructions for accurately <br />measuring PM2.5 concentrations. <br />Consistent with Arcadis policy, engineering controls will first be considered and implemented to the <br />extent practical to control PM2.5 levels of smoke in the atmosphere. These controls include, but are <br />not limited to performing work such as preparing paperwork, calibrating instruments, preparing <br />equipment, etc. inside buildings or vehicles with filtered air ventilation systems to the extent possible. <br />If engineering controls fail to mitigate smoke to less than current AQI 151 for PM2.5 levels in the <br />breathing zone, administrative controls will be considered. These controls may include, but are not <br />limited to, adjusting work schedules for affected employees, use of job rotation, implementing <br />work/rest periods, etc. to mitigate the exposure. <br />If engineering and administrative controls fail to mitigate a current AQI151 for PM2.5 exposure, <br />personal protective equipment in the form of respiratory protection will be provided as follows: <br />a) Where the current AQI for PM2.5 is equal to or greater than 151, but does not exceed 500, <br />respirators will be provided to all employees for voluntary use and employees are encouraged to use <br />the respirators provided. Respirators selected shall be NIOSH-approved and effectively protect the <br />wearers from inhalation of PM2.5, such as N95 filtering facepiece respirators. Respirators shall be <br />cleaned, stored, maintained, and replaced so that they do not present a health hazard to users. <br />Additionally: <br />1) The project team shall provide each respirator wearer a copy of Attachment A to this Plan as <br />training in the proper voluntary use of respirators on the project. <br />2) Since the respirator use is voluntary, Arcadis requirements regarding fit testing and medical <br />evaluations are not mandatory. <br />b) Where the current AQI for PM2.5 exceeds 500, respirator use is required in accordance with all <br />requirements in the Arcadis Respiratory Protection Health and Safety Standard. The assigned <br />protection factor for the respirator used will ensure the PM2.5 levels inside the respirator correspond <br />to an AQI less than 151. If wildfire smoke is the only respiratory hazard of concern on the project, <br />preparation of the Arcadis Level C Supplement is not required if meeting the requirements of this plan. <br />None <br />In most situations, the NIOSH approved N-95 respirator to be issued for voluntary use will be in the <br />form of a "dust mask". When used in voluntary situations, the dust mask will be replaced: <br />a) At the end of each work shift; or <br />b) When visibly soiled or discolored from smoke, dirt or debris; or <br />c) When breathing becomes difficult or labored while wearing the dust mask.