Dig into the actual details (I did) and you will be able to sleep at night. 1, 3 and 4 present results of 'studies' that on their face might seem scary but are full of questionable 'science'. #2 discusses the resultant 'salt water wedge' working its way up to New Orleans as the result of drought. One good rain or hurricane and problem solved.
This lot is six (6) acres and I am unaware of any historical significance. It is surrounded by almost 350 acres of fields, flowers, and open space. I hope the state takes it back, as is their right, and puts in a transfer station. However, we all know that will not happen because the state got the better end of the deal when they sold us Asbestos Alley.