What are the affects on…

What are the affects on people, animals, crops etc if any chemical were to be exposed to water, land or air. I am not see much said about the chemicals being used or processed in this plant. What are the long term affects if there is a breach in their system. We need alot more information and it be accessible to the residents of Niagara. It is very close to lake Erie and other water ways. Huge concern. This plant won't mean a thing if people, animals water and crops are contaminated or die.
We need to protect ourselves and land first off.
This is an out of country company wanting to make money in our country our home. If things fail they just go back to their country and we are left to deal with the after math. I want more answers back but by reliable sources.