8.9.7 Records And Reporting

The survey record should be sufficient for another competent person to understand and, where practicable, repeat the assessment. It should identify the objective, applicable standard and limits, exposure category, date and time, personnel, source inventory and operating condition, site layout and access conditions, measurement positions, and relevant photographs or diagrams.

Instrument records should include manufacturer, model, serial number, sensor or antenna, calibration date and status, settings, units, correction factors, field checks, and any overloads or anomalies. Results should state the measured quantity, temporal and spatial processing, extrapolation or source summation, uncertainty, decision rule, deviations from the planned method, and the basis for the conclusion.

Where controls, repairs, or operating changes are recommended, a follow-up assessment should verify their effectiveness. Good measurement practice is demonstrated not merely by a plausible reading, but by a traceable chain from the assessment question through instrument selection, sampling, data processing, uncertainty, and a clearly supported conclusion.