Observations/Finding

As requested, the site was visited by our AS Engineering and Consulting (ASEC) representative for the purpose of providing quality control inspection and testing services.  Visual observation techniques were employed to verify compliance with project drawing/specifications, applicable codes, and materials submittals. The following observations were observed on site this day.

Following up on the progress from the previous day, work has continued behind Lots #224-#229. The contractor has made progress in the preparation of the retaining wall foundation and the lots from Lots #224-#229.

Backfilling and compaction activities were conducted within Lots #224-#229. The contractor utilized a Kobelco 310LC excavator to place the fill material in designated areas. Following placement, the material was transported and uniformly distributed across the lots using Bobcat 265 and Takeuchi TL12R2 compact track loaders to ensure even coverage. Once the fill was placed, compaction operations commenced using a Bomag BW211 sheepsfoot roller.

However, toward the end of the scheduled workday, the Bomag BW211 roller experienced mechanical issues. As a result, the contractor suspended compaction activities and focused on initiating repairs to ensure the equipment would be operational for the next working day. All field operations were subsequently halted for the remainder of the day.

Nuclear gauge density testing was conducted on the compacted layer near each individual lot and also near the retaining wall to evaluate moisture content and dry density. The results are attached.

Upon successful compaction of the lift, the contractor advanced to the next layer of backfill. Both general probing and proof-rolling tests were performed across the tested area. Near the wall the compaction is carried out with remote compactor BMP8500 for even compaction along the retaining wall.

We appreciate the opportunity to be of service to you on this project. If you have any questions regarding this report, please feel free to contact us. We will be more than happy to discuss it with you.