contaminated soil,contamination

My soil is part of a toxic waste site according to the EPA. They stopped the soil replacement three city blocks from my house. They did send out an amazingly written notice about how to avoid contamination. An example was to separate your garden tool away from other thins you use in the garage. It has arsenic. It did make me think about all the contamination there might be. As a kid, we looked forward to the 'fog truck' to run through the fog. Now I know the fog was insecticide. So I played in insecticide???? There is so much gunk lioke this in the air, dirt etc how does this contribute not only to health but eue developing glaucoma(sorry about long sentence) Are our eyes the canary in the coal mine?