When must Dangerous Goods be reported to authorities?

When assessing the reporting requirements for Dangerous Goods, the correct context focuses on the necessity of notifying authorities during a release or spill. This is crucial because any unintentional release poses immediate risks to public safety, environmental health, and regulatory compliance.

In the case of a spill or release, it's critical to report the incident swiftly to authorities to initiate necessary containment and remediation measures. This ensures that appropriate responses can be mobilized to mitigate hazards, safeguard communities, and protect the environment.

Other scenarios, such as purchasing Dangerous Goods, during their transportation, or during routine checks, do not inherently trigger a mandatory reporting responsibility unless they directly lead to a hazardous situation or incident. Hence, it's not just about the presence of Dangerous Goods but rather about the impact their mishandling may cause that dictates the requirement for reporting.