Agency Reportable Environmental Event Rate (AREER)
AREER is an internal environmental metric that promotes continued reductions in releases and emissions events. The AREER metric has been an element of ONEOK’s STI Plan for all employees since 2014, emphasizing ONEOK’s expectation for continuous improvement.
AREER is defined as the total number of releases and excess emission events that trigger a federal, state or local environmental-reporting requirement (with some exceptions to account for events outside our control, planned maintenance and disparity in reporting requirements across our operations) per 200,000 work-hours.
Since implementation of the metric, we have seen substantial overall reductions in our rate of reportable environmental events. In 2023, we set an AREER target of 0.40 and achieved a result of 0.32, which was nearly 30% lower (better) than 2022’s AREER result of 0.45.