Which OEHSA step is specifically designed to identify and map ambient threats and may require sampling equipment?

• A. Pre-Deployment/Baseline Activities
• B. Site Identification/Sectoring
• C. Routine and Specialized Assessment
• D. Reassessment

Answer: (C)

Identifying ambient threats and mapping their distribution is the function of routine and specialized assessment. This step is about systematically surveying the surrounding environment to uncover external hazards that could affect safety or operations and creating maps or models that show where those threats are and how they vary over space and time. Because it relies on actual environmental data, it may require sampling equipment to collect measurements—air samplers and air quality monitors, radiation detectors, noise meters, water quality tools, soil and sediment sampling kits, and other field instruments. These tools help turn observations into a tangible threat map that guides protective measures.

Pre-Deployment/Baseline Activities focus on establishing initial conditions before work begins, rather than ongoing identification of ambient threats. Site Identification/Sectoring centers on choosing locations and dividing the area into zones for planning purposes, not the systematic monitoring of external hazards. Reassessment involves rechecking and updating information after changes have occurred, but the primary task of locating and mapping ambient threats through data collection is the routine and specialized assessment step.