Records of testing shall be retained until the next test date and for how long thereafter?

• A. One year
• B. Six months
• C. Two years
• D. Three years

Answer: (A)

Records are kept to show that testing was performed and to provide a traceable history for the next required inspection. The rule requiring retention until the next test date and for one year after ensures that you have documentation available during the interim period before the next test, and you still have a buffer year to address any questions, audits, or follow-up issues that may arise after the test cycle has begun. This timeframe is long enough to support verification and accountability, but not so long as to create unnecessary paper buildup. The other durations are not what the regulation specifies for this purpose, making them unsuitable.