The ground is full of lead and other hazmat stuff. The land was the former ship building site where they produced steel for ships. Irwindale is going away this year as it has been sold and will become an industrial site. Land around the Chicago speedway has been sold also as it looks like the writing is on the wall there also. I also read that the NHRA is in trouble as the car count is very low with only 9 full time teams for next season.