HomeMy WebLinkAbout20180398E003_Renton_ES_16_2022-08-09_FR_046
Kirkland | Tacoma | Mount Vernon
425-827-7701| www.aesgeo.com
Date Mailed:
Principal / PM: Bruce Guenzler, L.G., L.E.G.
This document is considered a DRAFT until signed or initialed by an AESI Principal or Project Manager
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FIELD REPORT
Date Project Name Project No. Report No.
08/09/2022 Renton Elementary School 16 20180398E003 046
Location Municipality AESI Project Manager AESI Field Rep
1075 Duvall Ave NE Renton Bruce Guenzler, L.E.G. Samantha Parker
Permit No. Client/Owner Attn Requested By
B21004604 Renton School District No. 403 Ed Thomson Contractor
Engineer/Architect General Contractor Grading Contractor Weather
CPL / Hutteball + Oremus Cornerstone/Kyle Continental Dirt Contractors/ Jerry Jr. Partly cloudy, 70’s
THE FOLLOWING WAS NOTED:
Associated Earth Sciences Inc. (AESI) was on-site in the morning for observation of subgrade in Stormwater Detention Facility 1A,
and water line backfill at the request of Jerry Jr. of CDC. Upon arrival, AESI met with Jerry Jr. of CDC and Kyle of Cornerstone.
Stormwater Detention Facility 1A
While on-site, we observed that the contractor had finished the excavation for Stormwater Detention Facility 1A. The area had been
prepared for observation by removing approximately 6’ to 7’ of existing material. AESI used a ½ diameter steel soils T-probe to
assess the subgrade conditions. Generally, the area probed less that 2” under full body weight. In our opinion, based on our
observations we found the area of subgrade observed today to be firm and unyielding and suitable for support of Stormwater Detention Facility 1A. See Figure 1 for location of observed area today.
Water Line Backfill
While on-site, we observed that approximately 3’ to 4’ water line backfill had been placed in the areas indicated in Figures 2 and 3.
The backfill, consisting of on-site soils, was placed in 1’ to 1.5’ lifts and compacted with a hoepac and large single drum vibratory
roller. AESI used a density gauge to test the newly backfilled sections. Test results met or exceeded 95% compaction (Table 1). In our
opinion, based on our observations and test results, we found the observed area of the water line backfill, to be firm and unyielding
and suitable for support of planned paving.
Table 1: Compaction Test Results
Test
No. Location
Approximate
Backfill Depth
Relative to Existing
Ground Surface (ft)
Proctor
(ASTM D1557)
Dry Density
(pcf)
Moisture
%
Compaction
% Pass/Fail Notes
1 See Figure 2 0 133.5/8.2 131.2 8.8 98 Pass
2 See Figure 2 0 133.5/8.2 131.3 6.4 98 Pass
3 See Figure 2 0 133.5/8.2 130.9 5.5 98 Pass
4 See Figure 2 0 126.9/10.5 122.2 6.2 96 Pass
5 See Figure 3 0 126.9/10.5 121.5 6.0 96 Pass
6 See Figure 3 0 129.9/9.2 124.8 5.7 96 Pass
7 See Figure 3 0 129.9/9.2 123.5 5.2 95 Pass
8 See Figure 3 0 129.9/9.2 126.6 5.5 98 Pass
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Date Project Name Project No. Report No.
08/09/2022 Renton ES 16 20180398E003 046
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FIELD REPORT
Figure 1. Sheet C2.1 The approximate area of Stormwater Detention Facility 1A subgrade observed today is indicated in
blue. The previously observed area is indicated in green. North is to the right.
Photos 1 & 2. The subgrade area prepared for Facility 1A observed today.
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Date Project Name Project No. Report No.
08/09/2022 Renton ES 16 20180398E003 046
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FIELD REPORT
Figure 2. Sheet C3.1 The location of water line backfill observed today is indicated in blue. North is to the right of the
figure.
1
2
3
4
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Date Project Name Project No. Report No.
08/09/2022 Renton ES 16 20180398E003 046
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FIELD REPORT
Figure 3. Sheet C3.2 The observed area of water line backfill is indicated in blue. North is to the right of the figure.
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5
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