How long should records of single-walled spill prevention equipment testing be kept?

Records of single-walled spill prevention equipment testing should be maintained for three years to comply with regulatory requirements. This duration aligns with the need for ensuring accountability and traceability in environmental protection practices. Retaining records for this period allows inspectors and stakeholders to verify compliance with regulations, review historical data for operational performance, and assess potential environmental risks associated with the equipment. This timeframe is also consistent with many federal and state guidelines, which stipulate the importance of keeping such records to facilitate effective management and oversight of underground storage tank systems. Maintaining records for three years reflects a balance between ensuring sufficient data retention and managing the administrative burden associated with record-keeping.