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.

• The placement and compaction of backfill soils for retaining wall #2 and backfill for the water line in front of Lots #178, #179, #180, and Lots #1, #188, #189, #189, #190, #191, #192 continued this day.
• The undersigned arrived onsite to observe block retaining wall #2 installation at creek crossing. The undersigned noted was used as backfill behind the block and in the cells (crushed No. 57 stone). Geo-Grid was placed every course of the wall. No. 57 stone was also utilized 1 foot behind the block and within the cells.
• At the time of arrival, our representative observed that work was in progress with6″ lifts being placed for retaining wall#2 backfill and compacted using a 9-ton Sheep feet and trench compaction equipment and at the time of arrival, our representative observed that work was in progress with 1-foot lifts being placed for water line. Compaction testing was performed using a Troxler nuclear density gauge of Soil (ASTM D 2937) and Standard Test Method for Density of Soil in Place by Drive-Cylinder (ASTM D 2937), along with general probing using a 3/8″ diameter probe rod.
• Density test results indicate that most of the compacted materials met the project requirement of 95% of the maximum dry density obtained by a Standard Proctor ASTM 698.

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.