Initial Site Characterization
The more accurate, detailed, and comprehensive the information gathered about a site, the better the protective measures can be tailored to safeguard workers from the specific hazards they may encounter.
Phases of Site Characterization
The site characterization process, along with the development of a Health and Safety Plan (HASP), typically occurs in three distinct phases:
- Preliminary Off-Site Evaluation
Information is collected from a distance, away from the site. This includes reviewing records, interviewing knowledgeable parties, and performing reconnaissance observations from the site perimeter. - On-Site Survey
During this phase, site entry is restricted to trained reconnaissance personnel. Their task is to confirm preliminary findings and gather additional on-site data to further define site conditions and potential hazards. - Ongoing Monitoring
Once the site is determined safe for general operations, continuous monitoring should be performed. This ensures real-time information about changing site conditions and verifies that control measures remain effective.
A Continuous Process
Site characterization is not a one-time task—it is a continuous and evolving process.
At each stage, newly obtained information must be evaluated and incorporated into the site’s health and safety plan to ensure that all identified hazards are properly managed.
Additionally, all site personnel should remain vigilant and report any new or unusual site conditions that may indicate emerging hazards.
Key Considerations
Within each phase of the characterization process, the sequence of steps should be determined based on project priorities, time constraints, and budget considerations.
Whenever possible, all available information sources—including environmental data, previous site reports, and local knowledge—should be fully utilized to create a thorough understanding of the site’s potential risks.