Supporting Technical Assessments

91 89 100 100 100 HQ Coring 88 100 W-S W VS S F 'VL'- 'L' 'VL' D VSt CH SW SP ML TOPSOIL, Clayey SILT, with minor fine to medium grained sand, trace rootlets; dark brown to black. Very soft, wet to saturated, high plasticity. Silty CLAY, with minor fine sand; brown. Soft, wet, high plasticity. from 1.05m: becomes firm from 1.18m: becomes light brown with orange mottling, moderate plasticity [poss. volcanic ASH?] Fine to medium SAND, with minor silt, light grey with orange staining. Very loose to loose, wet. from 2.35m: becomes poorly graded mostly fine grained Fine to medium grained poorly graded SAND, with minor silt, grey brown. Very loose, wet. from 2.88m: Fine to coarse SAND, with minor gravel, white grey with greenish inclusions, dense, wet, fine sub angular to sub rounded gravel. from 2.88-3.0m: layer of grey brown material from 3.0m: becomes brown from 3.32m: becomes grey brown SILT, with some fine to coarse poorly graded sand, grey with greenish inclusions. Very stiff, wet, moderate plasticity. Greenish grey, RHYOLITE, TUFF very weak, widely spread joints. Breaks down to sandy/clayey silt. from 3.75m: becomes orange brown. from 3.83m: becomes greenish grey. from 4.05m: becomes brown from 5.0m: becomes weak from 5.03m: becomes brown from 5.5m: becomes dark greenish grey with brown mottling, more welded/crystaline. breaks down to sand Termination Depth = 6m Alluvium Homunga Rhyolite - Tuff 0.1 [] 1.5 [] 2.7 [] 2.9 [] 3.0 [] 3.7 [] 6.0 [] Joint at 4.36m, very narrow to tight, very steeply inclined, smooth, stepped, trace Manganese mineralization -Joint at 5.78m, very steeply inclined, undulating, smooth, very narrow to tight, brown silt and black Manganese PO Box 6543 Auckland 1141 GHD Limited Project Quattro OceanaGold Ltd Waihi - TSF3 51/37083 Site Identification: Logged: Processed: Checked: Project: Client: Site: Job No.: AP05 JM AS LP BOREHOLE with Piezo LOG Commenced: 24-May-17 Completed: 25-May-17 Contractor: Perry Geotech Datum: Mine (1000 m) Total Depth: 6.0m Coordinates: Refer to attached Table Sheet 1 of 1 BOREHOLE LOG NZ ALT 5137083_NZ LIB_PROJECT QUATTRO - TSF3 LP COMPLETE DRAFT.GPJ NZ GINT DATA TEMPLATE VER 1.5.GDT 10/8/17 Piezometer Shear Vane: Drilling Method 1 2 3 4 5 6 7 8 9 10 -90 Comments: ROCK DESCRIPTION: Weathering, colour, fabric, ROCK NAME (Formation Name) W MS VS S Water Bore Diameter (mm): Inclination: VW ES Core Run / Recovery (%) 20 60 200 600 2000 SOIL DESCRIPTION: (Soil Code), Soil Name [minor MAJOR], colour, structure [zoning, defects, cementing], plasticity or grain size, secondary components, structure. (Geological Formation) / Defect Spacing (mm) RQD (%) Estimated Rock Strength EW Graphic Log Classification Support / Casing (m) tractor JD Tractor Rig Depth (m)/ [Elev.] Equipment: Weathering Consistency/ Relative Density Moisture Condition TESTS & SAMPLES / ROCK MASS DEFECTS: Depth, Type, Inclinations, Roughness, Texture, Aperture, Coating Geological Fm 1 2 3 4 5 6 7 8 9 10 96 Elevation: Refer to attached Table Ash

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