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Committee of the Whole/Documents/Test Pit Log (TP19-04, TP19-05, TP19-06)
Appendix

Test Pit Log (TP19-04, TP19-05, TP19-06)

May 11, 2021Page 2253 sections

Geotechnical test pit stratigraphic logs documenting soil composition and bedrock depths for a project site.

Test Pit 19-04 reached bedrock at 2.2 mTest Pit 19-05 reached bedrock at 3.5 mTest Pit 19-06 reached bedrock at 4.05 m

Test Pit 19-04 (TP19-04)

Stratigraphy:

Depth Description
0.0 to 0.3 m Topsoil – Silt, dark brown, some organics and roots, damp
0.3 to 1.8 m Fill – Silt, brown, some gravel, trace sand and cobbles, damp
1.8 to 2.2 m CLAY – Stiff, light brown, silty, trace sand, damp
at 2.2 m End of test pit – refusal on bedrock

Notes: Very minor seepage noted at 0.9 m; Bedrock was observed to be generally intact, sloping, dark, igneous

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Test Pit 19-05 (TP19-05)

Stratigraphy:

Depth Description
0.0 to 0.2 m Concrete
0.2 to 0.4 m Topsoil – Silt, dark brown, some organics and roots, damp
0.4 to 0.7 m Fill – Silt, grey, trace sand and gravel, damp
0.7 to 0.9 m Topsoil – Silt, dark brown, some organics, roots, and wood debris, damp
0.9 to 1.7 m Fill – Silt, light brown, trace sand and roots, damp
1.7 to 3.5 m CLAY – Stiff to very stiff, light brown, silty, trace sand, damp
at 3.5 m End of test pit – refusal on bedrock

Notes: Clay turns very stiff at 2.8 m; Bedrock was observed to be fractured/weathered from 3.2 to 3.5 m, intact, dark, igneous at 3.5 m

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Test Pit 19-06 (TP19-06)

Stratigraphy:

Depth Description
0.0 to 0.2 m Topsoil – Silt, dark brown, some organics, damp
0.2 to 0.9 m GRAVEL – Compact, angular, light brown, some silt and sand, trace roots, damp
0.9 to 1.4 m GRAVEL – Compact, coarse, angular, reddish brown, trace sand and roots, damp
1.4 to 4.05 m GRAVEL – Compact to dense, angular, reddish brown, some silt and sand, trace cobbles, damp
at 4.05 m End of test pit – refusal on bedrock

Notes: Bedrock was observed to be fractured/weathered between 3.5 and 4.05 m, intact, dark, igneous at 4.05 m

Stratigraphy logs for Test Pits TP19-04, TP19-05, and TP19-06
Stratigraphy logs for Test Pits TP19-04, TP19-05, and TP19-06
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Extracted from: 2021 05 11 Committee of the Whole Agenda - Agenda - Pdf