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 on site this shift:

Our representative observed the contractor place backfill using a CAT Excavator using CAT 745 heavy-duty dump trucks.  Contractors inserted 351F sewer laterals, added 6 inches of No. 57 stone, then a layer of GAB.   Also, between manhole 9 to 9.1, the contractor inserted 2 storm drains between MH ay1 -AH6, AZ1-AH9.  Backfill was compacted with walk-behind roller. Contractor also used a 61PXI Dozer to compact backfill in Lots #4 through 10.

Observations:

1. Backfilling Activities:   Contractors placed backfill in sewer laterals and storm trenches. Also Added 6 inches of No. 57 stone, then GAB.
2. Storm Drainpipe Installation:  Contractors inserted 351F sewer lateral and storm drain lines.
3. Compaction Status: Compaction in the entranceway was found to be stable.

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.