Observations/Finding

AS Engineering and Consulting, LLC (ASEC) visited the site at the contractor’s request to observe and visually inspect the soils within the trench of the non-pressurized conduit within the dam.   The building pad for the adjacent structure was also visually inspected.

Dam Inspection:

The area in question along the dam was probed to evaluate the relative strengths of the soils. The soils within the conduit were stiff, and the probe did not exceed 2 inches of penetration. The soils were relatively loose and unconsolidated near the conduit outlet, and the contractor was advised to place rip rap in this area. The contractor plans to commence backfilling the area tomorrow morning.

Building Pad Inspection:

Probing techniques and nuclear density tests were used to test the soils in this area. Soils consisted of tan, red, slightly micaceous sandy silts with some brittle rock fragments. Moisture Density Relationship (proctor) were not available for these soils; however, wet and dry densities were taken. A soil sample was collected and taken to our lab, and the compaction values will be calculated in the final report.

The area consisted of relatively stiff soils, and the probe rod did not exceed two inches beneath the surface. Two tests were taken on opposite ends of the proposed building pad parallel with the lake. The contractor concurred that the building design is subject to change, so the area tested is within the staked area where the proposed house will be constructed. See wet and dry density values in the density report sections.