If a hazardous substance is released into the environment at or above the reportable quantity, whom must you call immediately?

Calling the National Response Center is the appropriate course of action when a hazardous substance is released into the environment at or above its reportable quantity. The National Response Center is a federal point of contact for reporting oil spills and hazardous materials releases as mandated by the federal regulations. They coordinate with various agencies to ensure a timely and effective response to such incidents. This center operates 24/7 and is equipped to handle emergency situations, making it crucial for ensuring public safety and environmental protection.

While informing the local fire department or the Environmental Protection Agency may be pertinent in some situations, the immediate responsibility to report such incidents falls to the National Response Center due to their specific role in emergency response and coordination. Notifying your supervisor is also important, but it does not replace the necessity of reporting the release to the National Response Center as a first step in the response process.