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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://ww3.arb.ca.gov/capcoa/dismap.htm. If the current or forecasted AQI for PM 2.5 is greater than 500, then the fieldwork shall be postponed. 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, respiratory protection shall be provided to all employees for voluntary use. Roux shall provide National Institute for Occupational Safety and Health (NIOSH)approved N-95 filtering facepiece respirators. Training regarding voluntary use of respirators shall be in accordance with Title 8, Section 5141.1 Appendix B. Additional protective measures may be instituted in the field which includes: • taking breaks within an enclosed structure where the air is filtered such as a vehicle, • increasing rest times and frequency, and • reducing the physical intensity of the work those lowering breathing/heart rates. 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 if they are suffering from any symptoms due to the air quality,the SSHO will notify the Project Manager, Project Principal, and OSHM immediately. 7.3 Electrical Storm Guidelines In the event that lightning and/or thunder are observed while working on Site, all on-Site activities shall stop, and personnel shall seek proper shelter (e.g., substantial building, enclosed vehicle, etc.). Work shall not resume until the threat of lighting has subsided and no lightning or thunder has been observed for 30 minutes. If the possibility of lightning is forecast for the day, advise the on-Site personnel on the risks and proper procedure at the pre-work safety briefing. Continuously monitor for changing weather conditions and allow enough time to properly stop work if lightning is forecast. 7.4 Earthquake Procedures In the event that an earthquake occurs while working on Site, the following section provides procedures to be followed to prepare for and assist workers during and after an earthquake at the Site. While very intense earthquakes are rare, less intense earthquakes can also be dangerous, resulting in utility line damage/failure, fires, structural failures, and slope failures. 7.4.1 Before an Earthquake • Determine in advance, potential structural hazards at the Site, alternate exits and stairwells from the work location(s), and the route(s)to follow to reach the exits in case an evacuation is necessary. • Recommend having at least a 3-day supply of food and water on hand. • Keep a flashlight and portable radio and check batteries periodically. • Have a fully stocked First Aid kit, plus emergency blankets (if applicable). 3989.0001 S.104/HSP Site-Specific Health and Safety Plan I ROUX 120