As requested, our AS Engineering and Consulting (ASEC) representative visited the site to provide quality control inspection and testing services. Visual observation techniques were employed to verify compliance with project drawings/specifications, applicable codes, and material submittals.

Site Observations:

• The installation and placement and compaction of GAB for retaining wall #1 and fill for the swimming pool area were in progress.
• The placement of ride rock blocks was in progress.
• Geo-grid reinforcement was installed with every course of the wall.
• A 1-foot layer of No. 57 stone was utilized behind the blocks and within the wall cells.
• At the time of arrival, for retaining wall, work was being conducted with 9-inch lifts of GAB placed and compacted using 9-ton Smooth drum and trench compaction equipment.
• for swimming pool and parking area work was being conducted with 1-foot lifts placed and compacted using 6-ton padfoot and trench compaction equipment. (location is shown in the picture)

Testing Performed:

• Compaction Testing:
  • Testing was conducted using a Troxler nuclear density gauge in accordance with ASTM D 2937 (Standard Test Method for Soil Density).
  • General probing was performed with a 3/8″ diameter probe rod.
• Results:
  • for soils Density test results indicate that most of the compacted materials met the project requirement of 95% of the maximum dry density as determined by Standard Proctor ASTM 698.
  • for GAB Density test results indicate that most of the compacted materials met the project requirement of 92% of the maximum dry density as determined by Modified Proctor ASTM D 1557-12.

Conclusion:
The work observed and tested on-site today demonstrates compliance with the project’s specified requirements for compaction and density.

Contact Information:
We appreciate the opportunity to assist you with this project. Should you have any questions regarding this report, please do not hesitate to contact