At the request of the client’s representative, our AS ENGINEERING AND CONSULTING, LLC (ASEC) representative visited the job site to observe the contractor’s work activities from a quality standpoint to verify compliance with project drawings/specifications, applicable codes, and materials submittals and conducted QC testing per the project drawings and specifications.  The following observations were made:

Our representative observed the contractors place backfill using CAT 336 excavator to dig backfill. Contractors use Cat 315F excavator to place sewer main from MH 4.9 – 4.10. After the pipe was placed, the contractor then placed No. 57 stone to 6 inches above the pipe.  Contractor used a CAT heavy-duty dump truck to transport GAB. Once GAB was placed contractor used a walk behind roller to compact.

Observations:

1. Backfilling Activities:
   • Backfilling was in progress for the sanitation sewer, utilizing 2-foot lifts between elevations 4.8 and 4.9.
   • Discussions were conducted with the foreman regarding the adoption of 6-inch lifts when using a trench packer.
2. Sewer Installation:
   • Sewer main was placed between MH 4.9 – 4.10.
3. Compaction Status:
   • Compaction was carried out using walk behind roller

Conclusion: The ongoing backfilling and storm drainpipe installation activities are progressing as planned, with considerations for lift sizes and temporary measures discussed with the foreman.