The letter should be polite, concise, and professional, emphasizing personal growth and the benefits of expungement. I am writing to request that I be allowed to file a petition for expungement of my criminal record before the required waiting period.I am looking for an example letter to send to a judge to help my sister in law who is 22, to sponge a DUI she received. Discover effective character letter examples for court to expunge your criminal record in California. Learn what to say to the judge with our samples. Customer: I need a sample letter to a judge regarding my withheld judgment for a DUI. Example: "I am writing to formally request an expungement of my criminal record. Indicate that the year is up, and you are writing to ask the court to amend your charge to a misdemeanor. Expungement Reference surepet Letter Template. Sample Expungement Letter To Judge Fill Online Printable.