... occur Waste Coll Pond Quality Liability/Insurance Gradual risk Gradual risk Gradual risk Gradual risk Gradual risk Gradual risk Gradual risk 2:56 PM 5,000 4,500 4,000 3,500 3,000 2,500 2,000 1,500 ... RISK ANNUAL RISK Occurrence cost of insurable (ISR) postclosure events if the risk events occur Current ISR Cover Current Premium 2,000 4,000 6,000 8,000 10,000 12,000 ISR risk ISR risk ISR risk ... of decreasing risk quotient per year risk threshold The six most risky insurable gradual events have risk quotients above $600,000 per year In addition, the top 20 risk events have risk quotients...