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Universal Health & Safety Plan For use on all high-risk,industrial and HAZWOPER projects Department of Toxic Substances Control Table 5-3: Competent Person Log N Scope of Work requires one or more competent persons(see table below) ❑ None, Scope of Work does not require competent persons(s). Activity/Area of Competency Name of Person(Affiliation) Note:Subcontractors may provide this person ❑ Material Hoists&Personnel Hoists ■ N/A ❑ Respiratory Protection ■ N/A ❑ Rigging Equipment ■ N/A ❑ Scaffolds ■ N/A ❑ Stairways&Ladders ■ N/A ❑ Steel Erection ■ N/A ❑ Trench&Excavations ■ N/A ❑ Underground Construction ■ N/A ❑ Welding &Cutting ■ N/A 5.6 Chemical & Airborne Hazards/ Constituents of Concern Airborne and chemical hazards are types of occupational hazards caused by workplace exposures. Exposure to airborne materials and chemicals in the workplace can cause acute or long-term detrimental health effects. Potential exposure to these hazards on AECOM projects can come from several sources including materials brought on site to perform work, constituents of concern found in environmental media under investigation, and simultaneous operations being performed at the site by the property owner/third parties. Based on information obtained from historical investigations and other sources,the chemicals in the table below are known or suspected to be present at the site. Table 5-4: Summary of Hazardous Properties of Chemical and Airborne Hazards Notes:PEL=Permissible Exposure Limit I TLV=Threshold Limit Value I IP=Ionization Potential I eV=Electron Volt MediaChemical Name of •• Other Common • Benzene N Soil N Groundwater Inhalation 1 ppm 0.5 ppm 9.25 N Vapor ❑ N/A Diesel fuel(TPH-DRO) N Soil N Groundwater Inhalation n/a 15 ppm n/a N Vapor ❑ N/A Ethylbenzene N Soil N Groundwater Inhalation 100 ppm 20 ppm 8.77 N Vapor ❑ N/A Gasoline(TPH-GRO) N Soil N Groundwater Inhalation n/a 300 ppm n/a N Vapor ❑ N/A MTBE N Soil N Groundwater Inhalation 40 ppm 40 ppm n/a N Vapor ❑ N/A ©AECOM Restricted Universal Heath and Safety Plan Template(S4[DSC]AM-209-FM2-C) 39 Revision 15 October 18,2023 PRINTED COPIES ARE UNCONTROLLED.CONTROLLED COPY IS AVAILABLE ON COMPANY INTRANET.