What qualifies as a reportable release of NH3 in a 24-hour period?

A reportable release of ammonia (NH3) in a 24-hour period is primarily defined by regulatory standards, specifically those set forth in the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) as well as the Emergency Planning and Community Right-to-Know Act (EPCRA). According to these standards, a release of toxic substances like ammonia becomes reportable when it exceeds certain threshold quantities, with 100 pounds being a key parameter.

When a facility or operation releases ammonia into the environment and that release totals 100 pounds or more within a 24-hour timeframe, it must notify the appropriate authorities. This ensures that emergency response agencies are alerted to potential hazards related to toxic releases. The threshold is established not only for the safety and health of nearby communities but also to manage and mitigate environmental impacts.

Releases below this threshold typically do not necessitate reporting, as they are considered to be within safer limits that are unlikely to cause significant harm. Therefore, the specification of 100 pounds represents a critical point for regulatory compliance, environmental safety, and public health considerations.