What items should be included in the field log for clearance sampling?

• A. Date/time; location; surface type and description; area sampled; sample ID; sampler; equipment; anomalies.
• B. Date/time only.
• C. Surface type and description only.
• D. Area sampled and sample ID only.

Answer: (D)

The key idea here is that a field log for clearance sampling must capture enough context to identify and reproduce every step of the sampling, linking each result to exactly where, when, and how it was collected. Recording the date and time shows when the sampling occurred, which matters for scheduling, remediation timelines, and any follow-up actions. Documenting the location ensures you know where the sample came from and can relate it to any mapped areas or work zones. Including the surface type and a description of what was sampled helps interpret whether the surface characteristics or materials could influence contamination levels or transfer.

Defining the area sampled clarifies the scope of that specific sample and makes it possible to compare results across similar zones or repeat sampling if needed. A unique sample ID ties the field collection to the laboratory analysis and any associated data, ensuring traceability from field to result. Identifying the sampler provides accountability and helps verify qualifications, while noting the equipment used identifies tools that could affect sample integrity or introduce contamination. Finally, recording anomalies captures any irregular conditions or deviations from the plan that could impact results, such as weather effects, access restrictions, or unexpected surface conditions.

Together, these details create a complete, auditable record that supports accurate interpretation of clearance outcomes and protects the integrity of the process.