If it was done in 2002, there is a very good chance that it may be on the internet even if it was expunged.
A lot of companies that sell "background" information do not update their databases, and the information may still be available.
One way to find out, is to pay for a background check through one of these companies and see if it pops up. A better way is to hire a private investigator who has acess to more of these data banks and pay them to find what information they can on the arrest and conviction.
You should know that if it was expunged, a judge is not going to allow it as evidence during a trial, and will not take it into consideration at sentencing.
Me, retired Police Officer