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 Lots #70 and #71 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.

Moreover, the sewer line between manholes F3 & F4 backfilling also continued today

Overall, the results of density testing confirmed that fill compaction was just short of the project and ASTM requirements.  This was 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 showing sewer line b/n Manholes F3 & F4