Observations/Finding

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 contractor place backfill using a CAT 336 excavator and Cat 315F excavator to place sewer main from MH 6.3 – 7.0. After the placement of PVC pipe the contractor then added No. 57 stone to 6 inches above pipe.  Contractor also started to excavate MH 4.6 – 5.0 using a Komatsu excavator pc490 LC.  Contractor then placed storm drain and backfilled with walk-behind roller.

Observations:

1. Backfilling Activities:
   • Backfilling was in progress for the sanitation sewer, and storm drain
2. Sewer Installation:
   • Sewer main was placed between MH 6.3-7.0
   • storm drain was placed between MH 4.6-5.0
3. Compaction Status:
   • Compaction was performed using a 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.