eSafety Supplies Products stocks a standard Excavation Permit Books. These books are perfect for businesses that have workers regularly operating with Excavators. Excavation Permit Books are project and job specific, contain review dates and a sequence of Basic Task Steps. This Permit Book creates traceability for workers and management to ensure checks are made and procedures followed. 50 Duplicate Sets Per Book. Top Copy Tears Out, Duplicate Remains in Book.