What is backfilling? Backfilling is the process that an Excavating Contractor will perform to put soil and dirt back into a trench or foundation after the excavation has been done for the construction project. So not only does Western Co Excavation perform all that's needed for the excavation phase of the project like utility excavation, trenching for foundations, grading, and site prep, but we also perform the backfill after it's done. Backfilling requires the right equipment as well as experience when it comes to knowing soil conditions and project requirements. Here at Western Co Excavation, we offer the best service when it comes to your backfilling needs. Any of the dirt work that you need done on your property, for your dream home build, or commercial construction, we're your go to local backfilling company.