See any precautions in place? Look at the location they use to cut up the metal. When they finish, all the fine particles are swept by machine onto the bare soil. Heyman and Osborne have been aware of the situation and think going through the motions of writing a couple of letters will take the pressure off them.

Where asphalt meets soil.
This old photo shows exactly where the asphalt ends and soil begins. You can see the marks from the machine sweeping onto the soil. So whatever particles from metal filings, paint, etc. is simply deposited to be either ground into the bare soil and/or flows down into the marine environment.