The Hannas bought a 7-acre tract near Tampa International Airport about 30 years ago as an investment. When they decided to sell it to finance their retirement, they discovered that pollution had leeched from a neighboring property, owned by Ashland Chemical, a Columbus Ohio chemical-mixing and distributing company, making their land difficult to sell.
In August 1996, the company negotiated an option to buy the Hanna property for $1.1 million. They extended that option a month later. Then, wh...