Example 1

"…Grace conceded that its employees had "sporadically' dumped an unknown quantity of trichloroethylene (TCE) and buried drums of the chemical on its property half a mile from the town wells. But the company insisted that many others in Woburn had dumped the same chemicals. The offending molecules in Woburn's water, Grace argued, did not come from its property, but from somewhere else nearby, perhaps from the polluted Aberjona River.

Company experts estimated that much of the TCE dumped by Grace had evaporated. The remainder that went deep underground, they said, could not have traveled half a mile through dense soil to wells G and H. Even if some TCE had gone into the ground water, Grace said, it could not have migrated to the wells in time to have "substantially' contaminated them…."