Hunton Insurance Recovery Blog

This post in our Landmark Montana Supreme Court Decision Series discusses the Montana Supreme Court’s consideration of an insurer’s duty to defend in National Indemnity Co. v. State, 499 P.3d 516 (Mont. 2021).

In this post in the Blog’s Landmark Montana Supreme Court Decision Series, we discuss the court’s ruling on the pollution exclusion in National Indemnity Co. v. State, 499 P.3d 516 (Mont. 2021).

The exclusion at issue was the standard qualified pollution exclusion used in some CGL policies in the mid-1970s. It excluded coverage for:

bodily injury or property damage arising out of the discharge, dispersal, release or escape of smoke, vapors, soot, fumes, acids, alkalis, toxic chemicals, liquids or gases, waste materials or other irritants, contaminants or pollutants into or upon land, the atmosphere or any water course or body of water; but this exclusion does not apply if such discharge, dispersal, release or escape is sudden and accidental.

In one of the top insurance-coverage decisions of 2021, the Montana Supreme Court at the end of the year handed down a landmark decision adopting the continuous trigger of coverage and “all sums” allocation, finding a duty to defend and ruling that the qualified, or “sudden and accidental” pollution exclusion did not apply. Nat’l Indem. Co. v. State, 499 P.3d 516 (Mont. 2021). The Supreme Court affirmed in part and reserved in part the rulings entered by the trial court, largely upholding a $98,000,000 judgment for the State against its CGL insurer for the policy years 1973 to 1975. The ruling thus helps ensure coverage for the hundreds of claims alleging that the State had failed to warn claimants of the dangers of asbestos exposures to workers in vermiculite mining and milling operations in Libby, Montana, operated by W. R. Grace (the “Libby Mine”).