HG Hodges & Son pleaded guilty to two charges of permitting waste to be kept on land that did not have a waste management licence.
The company allowed Three Counties Skip Hire to store waste at its Long Marston Airfield in Warwickshire.
Environment Agency (EA) officer Gill Mortlock said: HG Hodges & Sons actions were clearly intentional, irresponsible and illegal.
We hope this fine will act as a deterrent to other land owners who may attempt to defy legislation and procedures designed to protect the environment.
EA officers found a considerable amount of waste on land near the entrance to the airfield on a routine visit in May 2003, and again in October that year.
In mitigation, HG Hodges & Son said there was no attempt to hide what was going on.