What is the correct statement about area measurements in field sampling?

What is the correct statement about area measurements in field sampling?

• A. record the area of wiped areas
• B. record the area of non-wiped regions
• C. estimate total area wiped
• D. record specific measurements for each area wiped on the field sampling form

Answer: (D)

Wipe samples are tied to the exact surface area you wiped. Recording the precise area for each wipe on the field sampling form lets you translate lab results into area-normalized units (such as micrograms per square foot) and to accurately sum results across multiple wipes if needed. If you only note that some area was wiped or estimate a total area, you lose the ability to correctly calculate surface loading and compare it to standards. By documenting the specific area for every wiped region, you ensure accurate, traceable data and proper interpretation of the measurements.

Wipe samples are tied to the exact surface area you wiped. Recording the precise area for each wipe on the field sampling form lets you translate lab results into area-normalized units (such as micrograms per square foot) and to accurately sum results across multiple wipes if needed. If you only note that some area was wiped or estimate a total area, you lose the ability to correctly calculate surface loading and compare it to standards. By documenting the specific area for every wiped region, you ensure accurate, traceable data and proper interpretation of the measurements.