Observations/Finding

Our AS Engineering & Consulting (ASEC) representative arrived on site to observe field activities. The following tasks were performed:

Observed the placement of fill/grading for various areas today, spread by a 61Pxi Komatsu Bulldozer and compacted using a 815F CAT. Cutting continued from the adjacent roadway using a 349E CAT Excavator and hauling with two 745C dump trucks.  Compaction tests were performed using a nuclear density gauge.  General probing and proof-rolling were also performed to verify stability.  No severe pumping and/or rutting was observed.

Overall, the results of density testing confirmed that fill compaction met the project and ASTM requirements.  Several failing tests were due to much higher than optimum moisture contents.  We recommend that these surficial soils be aerated and recompacted prior to resuming fill placement.  Results are attached in a separate report.

Please contact us if you have any questions regarding this report or of the density test results.

Picture depicting Lots 71 & 77 close to subgrade