How long must a written hazmat incident report be kept at the reporting person's place of business?

The correct answer is two years. A written hazmat incident report must be retained for a minimum of two years at the reporting person's place of business in accordance with the pertinent regulations. This duration ensures that the business maintains a record of incidents that may need to be reviewed for compliance, safety evaluations, and potential liability considerations. Retaining reports for two years allows agencies and businesses to track past incidents, identify trends, and implement necessary changes to improve safety protocols and training.

The two-year retention period is also consistent with various federal and state regulations regarding hazardous materials and reporting requirements. This timeframe provides a balance between ensuring accessibility of important safety information and not requiring indefinite storage of reports that may be outdated.