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 use a CAT 336 Excavator and CAT 3364 to excavate an 8-inch sanitary sewer trench from MH 9.0-10.0.  After sanitary sewer trench was dug the contractor placed sanitary sewer laterals.  A CAT 938K loader to transport No. 57 stone and GAB. No. 57 stone was added to 6 inches above the sanitary sewer lateral. GAB plus backfill was added from MH 9.0-10.0 and compacted with a 54-inch drum roller and walk behind roller.

A Sany 3651 excavator was used to excavate a sewer trench from MH AH13-AH14. After sewer trench was excavated a Sany 3651 excavator was used to place 24 feet of 18-inch RCP storm drain.  A CAT 938K loader was used to transport No. 57 stone and GAB. No. 57 stone was added to 6 inches above the storm drain. GAB and backfill was added from MH 6.8-6.9 and compacted with walk behind roller.

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 sewer laterals, and storm drains.

Conclusion: The ongoing backfilling and storm drainpipe installation activities are progressing as planned.