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PMs and Field Personnel shall obtain the current AQI for the Site area by going online to https://www.airnow.gov/ and enter the zip code of the location where you will be working. AQI can also be found at the U.S. Forest Service online at https://tools.airfire.org/ or a local air district online at https://ww2.arb.ca.gov/california-air-districts, for the San Joaquin Valley Air Pollution Control District . AQI Shall be monitored daily to ensure field teams are protected from potentially harmful exposures of particulates. The OHSM and PM shall communicate worsening AQI conditions and protective measures available to employees to reduce their exposures to wildfire smoke. It is important to remember that not everyone will respond the same to varying AQI levels. Should field staff notice the air quality getting worse or they are suffering from any symptoms due to the air quality, the SSHO will notify the PM, PP, and OHSM immediately. Roux shall control harmful exposures to employees through the use of the hierarchy of controls.The following multidisciplinary approach shall be implemented: • Engineering Controls 0 Roux shall reduce exposures to PM 2.5 to less than a current AQI of 151 through the use of engineering controls. This will be done through the use of enclosed buildings/structures or vehicles where the air is appropriately filtered. If engineering controls are insufficient to reducing exposures to PM 2.5 to less than a current AQI of 151, then Roux shall implement additional controls to the extent feasible. • Administrative Controls 0 Whenever engineering controls are not feasible or not reduce exposures to PM 2.5 to less than the current AQI of 151, Roux shall implement administrative controls, which may include relocation of work to an area where the current AQI for PM 2.5 is lower (if able), rotating/changing work schedules, reducing work intensity, or providing additional rest periods which are preferred to be taken within an enclosed building/structure or vehicle where the air is filtered. • Personal Protective Equipment 0 If the current or forecasted AQI for PM 2.5 is equal to or greater than 151, but does not exceed 500,the project team should evaluate whether fieldwork should be postponed. In the event fieldwork cannot be postponed, sufficient respiratory protection shall be provided to all employees for voluntary use. Roux shall provide National Institute for Occupational Safety and Health (NIOSH)approved devices that effectively protect the wearers from inhalation of PM 2.5,such as N-95 filtering facepiece respirators. Respirators shall be cleaned or replaced as appropriate, stored, and maintained so that they do not present a health hazard to users. Training regarding voluntary use of respirators shall be in accordance with Title 8, Section 5141.1 Appendix B. If the current or forecasted AQI for PM 2.5 is greater than 500, then the fieldwork shall be postponed until the AQI is within acceptable parameters and appropriate controls are implemented which are outlined above. If work cannot be postponed and where the current AQI for PM2.5 exceeds 500, respirator use is required. Respirators shall be used in accordance with Cal/OSHA Title 8 CCR Section 5144. Roux shall provide respirators with an assigned protection factor, as listed in Cal/OSHA Title 8 CCR Section 5144, such that the PM2.5 levels inside the respirator correspond to an AQI less than 151. Employees required to wear respiratory protection shall be medically cleared, fit-tested, trained and authorized to wear a respirator in compliance with Cal/OSHA Title 8 CCR Section 5144, Respiratory Protection. 5175.0001S102/HSP Site-Specific Health and Safety Plan I ROUX 119