How long must CEMS records be maintained and stored?

The correct duration for maintaining and storing Continuous Emissions Monitoring System (CEMS) records is two years. This is required to ensure that records are accessible for review by regulatory authorities and to support compliance with environmental regulations. Keeping records for this period allows for proper tracking of emissions data, which is crucial for assessing compliance with air quality standards and for the management of any necessary reports or audits. The two-year timeframe strikes a balance, allowing sufficient historical data availability while not overburdening organizations with overly lengthy storage requirements.