The article says the soil mixture is available to residents and being used by the city to restore damaged boulevards. None of this is being communicated as being sold to farms for growing produce.

It seems like they probably are doing due diligence and they’re not poisoning the people they serve.

They talk about the city using it for fill soil on their site. They do have a picture suggesting it might be usable in a garden but that’s it.

https://gyr.fortlauderdale.gov/greener-government/natural-re...

I suggest if you’re concerned that you email them and let them know not to suggest using it for gardening.