Observations/Finding

As requested, an 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.

Observations:

• Placement and compaction of fill for the storm trench between structures MHC0, MHC1, MHC2, and MHD1 continued during the site visit. A soil sample was collected and delivered to the laboratory for a Moisture-Density relationship (proctor).

• Upon arrival, it was observed that work was actively progressing. Fill was being placed in approximately 1-foot lifts and compacted using a 9-ton sheepsfoot roller and trench compaction equipment.

• Compaction testing was performed utilizing a Troxler nuclear density gauge (per ASTM D2937) and general probing using a 3/8″ diameter probe rod.

• Density test results indicated that most of the compacted materials achieved the project specification requirement of 95% of the maximum dry density, based on the Standard Proctor (ASTM D698).

• Note: Contractor incorporated rocks mixed with the existing soils during the fill placement process (see attached photographs for reference).

ASEC appreciates the opportunity to support your project. Should you have any questions regarding this report, please do not hesitate to contact us. We would be happy to assist further.