background data to environmental (workplace) monitoring or measuring, such as laboratory reports and worksheets

What is the regulation for background data to environmental (workplace) monitoring or measuring, such as laboratory reports and worksheets?

For background data to environmental (workplace) monitoring or measuring, such as laboratory reports and worksheets, regulation is 29 CFR 1910.1020; regulator / programme is OSHA; retention period is one (1) year; who it binds is each employer; exceptions and notes is only if the sampling results, the collection methodology (sampling plan), a description of the analytical and mathematical methods used, and a summary of other relevant background data are retained for at least thirty (30) years, recorded from its source on 2026-08-11; source re-checked 2026-09-17.

Background data to environmental (workplace) monitoring or measuring, such as laboratory reports and worksheets, need only be retained for one (1) year as long as the sampling results, the collection methodology (sampling plan), a description of the analytical and mathematical methods used, and a summary of other background data relevant to interpretation of the results obtained, are retained for at least thirty (30) years

— ecfr.gov, retrieved 2026-08-11