Unit Designation

The unitDesignation is how field crews refer to an ExcavationUnit in notebooks, on bag tags, and over the radio. It is usually a grid coordinate such as "N100 E50" or a sequential label like "TP-3", chosen to communicate where the unit sits on the site grid. Because the designation must be unique within a project, there is never any confusion about which unit a record belongs to — provenience stays unambiguous. Picking a consistent designation scheme up front, tied to your site datum and grid, keeps maps, catalogs, and reports easy to read and matches the conventions diggers already use in the trench.