This is a bigger problem than 80 homes. You have an enormous area that's been contaminated, and we're probably looking at the tip of the iceberg.
"Shawn Collins" is a former professional American football wide receiver in the National Football League. He was drafted by the Atlanta Falcons in the first round of the 1989 NFL Draft. He played college football at Northern Arizona Lumberjacks football/Northern Arizona.
Collins also played for the Cleveland Browns, Green Bay Packers and Frankfurt Galaxy. He played in the Canadian Football League in 1995 for the Winnipeg Blue Bombers and the Memphis Mad Dogs.More Shawn Collins on Wikipedia.
There's no doubt this contamination is coming from the landfill.