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FIELD REPORT
Date Project Name Project No. Report No.
05/12/2022 Renton Elementary School 16 20180398E003 006
Location Municipality AESI Project Manager AESI Field Rep
1075 Duvall Ave NE Renton Bruce Guenzler, L.E.G. Kelsey McCrady
Permit No. Client/Owner Attn Requested By
Renton School District No. 403 Ed Thomson Client
Engineer/Architect General Contractor Grading Contractor Weather
LPD / Hutteball + Oremus Cornerstone Continental Dirt Contractors/ Jerry Jr. Rain, 50’s
THE FOLLOWING WAS NOTED:
Associated Earth Sciences Inc. (AESI) was on site part-time at the request of Jerry Jr. with Continental Dirt Contractors (CDC).
Watermain Trench Backfill:
AESI onsite today for TESC observations. While onsite, CDC requested AESI take density tests on previously installed watermain backfill
in Duvall Avenue. The north lane of Duvall Ave as been ground to top rock elevation for resurfacing. While onsite, AESI observed as the
contractor excavated a pothole in the backfill to approximately 1.5-feet below bottom of asphalt elevation. The contractor stated that
the watermain pipe was approximately 5-feet deep While onsite, AESI took 20 tests in the backfill using a nuclear densometer gauge
and all tests passed the site minimum specifications of 95%. See Table 1 below for compaction results and Figure 1 for locations.
Table 1: Compaction Test Results – Watermain Backfill
Test No. Location Approx. Depth (ft) (below GS) Proctor (ASTM D1557) Dry Density (pcf) Moisture % Compaction % Pass/Fail
1 Watermain 1.5 141.0/7.4 136.0 8.5 96 Pass
2 Watermain .5 141.0/7.4 134.2 7.1 95 Pass
Figure 1. Plan sheet
C2.0. Blue location
indicates watermain
backfill observed today.
Red locations indicate
density tests today.
North is right.