Time charges (SiteManger diary charges) begin 30 calendar days after the date of Authorization to Begin Work letter. The contractor has the option to begin work any time within the 30 calendar days. For contracts with work orders, such as a traffic signal project, begin working day charges as established for each individual work order.

In some cases, the contract will include a special provision to allow for extending the beginning of time charges on the contract beyond the standard 30 calendar days. When the contract includes a delayed start time provision, act in accordance with the contract provisions.