Kashrut: Dairy/Meat: Larger Pot Spatters above Normal Food Line

Situation
  • A hot, empty pot of one gender gets a spatter of opposite-gender food ABOVE the normal food line. 
  • The spatter is more than 1/3600 of the normally used volume of the pot.
Status The pot is non-kosher.
What To Do You must kasher the pot by washing in cold water and soap, waiting 24 hours, and then boiling the pot.