Walla Walla College v. Ohio Casualty Insurance

*728¶1 In 1991, Walla Walla College purchased three fiberglass underground storage tanks from 3-D Tank & Petroleum Equipment Co., Inc. 3-D Tank also installed the tanks. Ten years later, approximately 10,000 gallons of gasoline leaked from one tank into the ground. Great American Insurance, now Ohio Casualty, insured Walla Walla College under commercial general liability policies from January 23, 1990, until January 23, 1992. Walla Walla College asserts that these policies covered the losses caused by the gasoline leak because the tanks were improperly installed, which resulted in the gasoline…