HSLDA members can also use the sample letter of withdrawal for Utah, located below, to correspond with school officials. There's no 'proper' way.You just need to be clear and unambiguous about it. Mustang News obtained 17 letters from former members of the Cal Poly chapter of Chi Omega sorority. These members sent their letters to Chi Omega to resign. Got my membership withdrawal letter. SPECIAL NOTE: Utah law requires corporations seeking withdrawal to submit a Tax Clearance Certificate with the Application for Withdrawal. Learn what a withdrawal letter is, how to write a letter of withdrawal and see a template and an example to help you write your own. One of the first things TRS will send to you is a "Welcome to Membership" letter and a Designation of Beneficiary form (TRS 15). Process and Requirements.