A wet field needs an explanation first
A soggy patch, sewage at the surface or a recurring backup can have several causes. Surface water, seasonal groundwater, damaged piping and the condition of the field all need consideration. Digging immediately is not a diagnosis.
Describe when the problem appears, whether it changes with spring conditions and what has already been checked. Any necessary assessment and system design should guide the excavation scope.
Repair work and replacement are different jobs
A damaged buried connection or distribution line may call for a localised repair. A field that can no longer do its job may need a different or larger project. The existing layout, soil conditions, available area and applicable design determine the options.
An estimate should make clear whether it covers exposing a defect, rebuilding a defined section or excavating for a replacement field. Those scopes should not share a vague one-price label.
What the excavation estimate should cover
- Access and machine working room without unnecessary disturbance.
- The type of field and the particular trench or section involved.
- Materials, excavated spoil, backfill and the finished surface.
- The role of the designer or other qualified person.
- Any pumping, testing or other work that is arranged separately.