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:

Upon arrival at the site, our representative observed the contractor place a drainage pipe 2 feet down near the burrito wrap. Drainage pipe was inserted to be a conduit for removing water from the two-lot section. Backfilling activities were underway for section one of lots. Backfilling was being conducted in 1-foot lifts. Contractor used a Cat 330 excavator and Rokbak RA30 to transport soils to section one of the lots. Then contractor used two Komatsu 51PX dozers to spread out materials prior to compaction using a sheeps-foot roller.

The AS ENGINEERING AND CONSULTING, LLC (ASEC) representative used a 3/8″ diameter probed rod to check soil stability in section 1. Souls appeared stable.  On the far east corner of section one some fill soils were found to be excessively wet.  The contractor was informed and elected to scarify and aerate the east corner of section one to allow drying.

Observations:

1. Backfilling Activities:
   • Section 1 is 6,407,500 sq ft
   • Aerated section is 1,242,600 sq ft, from far east corner of section 1
   • Backfilling was in progress for section 1-foot lifts between elevations

Conclusion: The ongoing backfilling activities are progressing as planned,