This letter will serve as authorization for. Secure proper authorization to sign documents on behalf of your company with our expert tips and free .The Assured and Adequate Water Supply Rules, A.A.C. R12-15-701 et seq. You should give them a notice to vacate after at least five days. If they don't leave within the timeframe, you can file an eviction action with the court. Ensure that you specify the item or document being claimed. Authorization Letter. Thank you for contacting PHX Customer Service. Edit, sign, and share authorization letter for vehicle release online. No need to install software, just go to DocHub, and sign up instantly and for free.