We have a complete engineering specification for this. The simple answer is to remove the Cookie and then set our certified round trenchbox and vacuum excavate as the trench box slides down into the excavation exposing the utility.

Part#: P-MM0233

Product Link: https://mrmanhole.com/product/trench-box-knife-edge-6-section/

Resource: https://mrmanhole.com/introducing-the-cookie-cutter-system-for-easy-fast-and-safe-road-penetrations/