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A=COM 4.4 Employee Sensitivity 4.4.1 Sensitivity to toxins generated by plants, insects and animals varies according to dosage and the ability of the victim to process the toxin; therefore, it is difficult to predict whether a reaction will occur, or how severe the reaction will be. Employees should be aware that there are a large number of organisms capable of causing serious irritations and allergic reactions. Some reactions will only erupt if a secondary exposure to sunlight occurs. Depending on the severity of the reaction,the result can be severe scarring, blindness or even death. 4.4.2 Employees also need to consider whether they are sensitive to the use of insect repellents. 4.5 Planning and Hazard Assessment 4.5.1 AECOM personnel shall confirm that the potential for exposure to specific biological hazards are assessed prior to the commencement of work and that the procedures specified by this procedure are integrated into the THA planning process and conveyed to employees conducting the field work.This information shall be communicated in the location-specific SH&E plan,the THA, pre- project kickoff meetings, and tailgate meetings at the location. 4.5.2 It is important to note that the precautions to be taken by employees to decrease the risk of exposure to biological hazards can directly increase the risk of heat-related illness due to thermal stresses. Therefore, heat stress monitoring and precautions shall be included as a critical component of the task-specific THA in accordance with S3AM-511-PR1 Heat Stress. 4.5.3 During the preparation of the location-specific SH&E plan and task specific THA, Managers, Supervisors, and employees shall determine what biological hazards might be encountered during the task or operations and shall prescribe the precautions to be taken to reduce the potential for exposure and the severity of resulting illnesses. Consideration will be given to conditions such as weather, proximity to breeding areas, host animals, and published information discussing the presence of the hazards. 4.5.4 It should be assumed that at least one of the biological hazards exists whenever working on undeveloped property. This can include insect activity any time that local temperatures exceed 40 degrees Fahrenheit(4.5 degrees Celsius)for a period of more than 24 hours.The stubble and roots of poisonous plants can be a hazard any time of year, including when some plants are dormant or mown. 4.5.5 The hazard assessments shall also consider the additional hazards posed by vegetative clearing such as the increased risk of coming in contact with poison ivy, oak or sumac and hazards associated with the use of tools and equipment to remove vegetation. 4.5.6 Employees in the field where biological hazards exist shall not enter the hazard areas unless they are wearing the appropriate protective clothing, repellents, and barrier creams specified below. If the hazard is recognized in the field but was not adequately assessed during the THA,the field staff shall stop work and not proceed until the THA has been amended and approved and protective measures implemented. 4.5.7 Employees who have severe allergic reactions are strongly recommended to notify their Manager, field Supervisor and co-workers of the potential for a reaction and demonstrate what medication they might need,where they keep it and how it is administered. 4.5.8 A decision flow chart and table for determining the potential for biological hazards in the Americas has been provided in S3AM-313-ATT1 Biological Hazard Assessment Flow Chart. 4.5.9 Restrictions: • No firearms or weapons are allowed to be used without express permission by the Region Executive and Chief Resilience Officer, refer to the RS2-001-PR1 Firearms Standard. • No weapons related work shall occur without an assessment that includes appropriate hazard control measures and training. Wildlife,Plants&Insects(S3AM-313-PR1) Revision 6 July 31,2019 PRINTED COPIES ARE UNCONTROLLED. CONTROLLED COPY IS AVAILABLE ON COMPANY INTRANET. Page 3 of 10