0 25 50 SPT 0 25 50 SPT 400 200 0 fs (kPa) 10 20 qc (MPa) 0 25 50 SPT Ash CW Ignimbrite WG5 off 35m North EoH MW-SW Ignimbrite WG6 off 30m South Fine rhyolitic tuff ? Alluvium. Undercut? MW-SW Dacite CPT33a off 6m North EoH WRS3/3a off 6m South Alluvium EoH Rhyolite MW3D off 9m South Fill Existing Stream/Uphill Diversion Channel Perimeter Road Fill WR3 off 12m South Alluvium Possibly Dacite Breccia CW-HW Dacite EoH CP35 off 16m North Refusal at 6m EoH ? ? qc average 1MPa fs average 100Mpa EoH EoH ? Could be alluvium CP29 off 16m South Refusal at 6m WRS8 (GHD) off 57m North Alluvium EoH Rhyolite BH31/31a Alluvium EoH SCPT8 off 18m South SDMT7 CPT33 off 6m North EoH CP32 off 52m North Refusal at 5.5m Dacite SECTION 2 - 1:250 scale Rhyolite tuff (ts): Fine grained rhyolitic tuff, white, sometimes slightly oxidised. Soil strengths with high water content and sensitive/quick behaviour. Typically white colouring. Dacite (iu): Completely weathered to slightly weathered dacite. Dacite encountered varies between brecciated, flow banded and massive. Completely weathered dacite has soil strength. Moderately to slightly weathered dacite is weak to strong. Typically grey with white and black phenocrysts. Some weathered dacite has purple tinge. Alluvium Ash Colluvium ts iu al co as il Ignimbrite (iI): Ignimbritic tuff with high proportion of gravel sized lithics. Completely weathered to slightly weathered. Completely weathered material has soil strengths, with some with sensitive/quick behaviour. Moderately to slightly weathered ignimbrite is extremely weak to weak. Often with greenish grey and light grey colouring. Homunga Rhyolite Uretara Formation Ignimbrite Boulder & Cobble Alluvium: Boulder and cobble alluvium supported, with weakly cemented matrix of sand and silt found beneath ignimbrite in paleo channel/gully. Boulders and cobbles are mainly rhyolitic and dacitic. Rhyolite (fr): Rhyolitic lava flows. Various forms encountered including flow banded, spherulitic, phenocrystic, brecciated. Weathering grades from completely weathered to slightly weathered. Often white and purple colouring. fr wn Figure 15
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