Choose: Search by County
On the next web page
Select State: Kentucky
Then the Select County dropdown becomes populated with the counties in Kentucky.
Select Clay County and the contact information for Delta, Columbia and Vinland is given.
https://pvnpms.phmsa.dot.gov/PublicViewer/
Choose state: Kentucky
Choose county Clay
Then zoom in a bit to get a reasonably good idea of where your property is in Clay County.