31 23 00 Excavation and Fill
31 23 16.16 Structural Excavation for Minor Structures
31 23 13 Subgrade Preparation 31 23 16 Excavation 31 23 16.13 Trenching 31 23 16.16 Structural Excavation for Minor Structures 31 23 16.26 Rock Removal 31 23 19 Dewatering 31 23 23 Fill 31 23 23.13 Backfill 31 23 23.23 Compaction 31 23 23.33 Flowable Fill 31 23 23.43 Geofoam 31 23 33 Trenching and Backfilling