After my grandfather died, demolition crews dumped garbage from the house onto his huge vegetable garden, including lead-painted windows, aluminum, asbestos tiles and more. Much of it got burned in a few bonfires, which I assume released the toxins into the soil.
I've cleaned out every object I can see from that pile, but I'm wondering if the vegetables grown in that soil will be toxic? It's been about three years since the demolition.
Also, to avoid the possible toxins from that area, we created a raised container garden using soil from a different location. Yesterday, 3 Tablespoons of paint thinner mixed with water was dumped accidentally on one of the plants. We hosed it down, and it's still alive, but I'm thinking that the squash it will eventually produce is now toxic too, right?
Thanks in advance. We're new to gardening and really want to understand how this works.