What is your EPA Risk Management Plan “Hazard Index”?

One of the methods EPA uses to determine RMP inspection priorities is based on their use of the Wharton School’s Hazard Index, which is defined as 

“the sum over all chemicals of log2 (maximum quantity of inventory on-site/threshold), or, alternatively, as the number of chemicals times log2 of the geometric mean of the maximum-to-threshold quantity ratio.”

EPA has defined a “High Risk” facility as one that has:

1. RMP WCS population ≥ 100,000
2. Any accident meeting RMP reporting criteria within last 5 years
3. Hazard Index ≥ 25

So do you know your facility’s  “Hazard Index”?