Access invoices, request forms, and more documents related to the Office of Public Defense Services. Incidental Expenses.Incidental expenses are included in the per diem rates for meals. Calculate your per diem allowance for your trip. Simply enter your travel dates and details to find out your per diem allowance. Easily find Arizona's per diem rates for your business trip. By including a per diem amount in the letter, the parties will not have to execute another payoff letter if the termination date. Investigation of Sexual Abuse. 10.00. Will initiate and complete the work within the applicable time frame after receipt of approval of the awarding agency. â–« A copy of the payoff statement for the current first mortgage.