Slope Stability Report 26-5-2019 OPW19-0193

                                                                                                                                                                                                                                                                 POINTID:             HA2
                                                                                                                             BOREHOLE LOG
                                                                                                                                                                                                                                                                     SHEET:          1 of 1

CLIENT:                                           Trubuilt                                                                                                                                                     DATE COMMENCED:                                          17-May-19
PROJECT:                                          Slope Risk Assessment Report                                                                                                                                 DATE COMPLETED:                                          17-May-19
LOCATION:                                         91 Ewarts Road, Cooran                                                                                                                                       LOGGED BY:                                               M Grinceri
JOB NUMBER:                                       GAG16011 - LEONTAKIANAKOS                                                                                                                                    CHECKED BY:                                              M Grinceri
CONTRACTOR: GA Geotechnical                                                        HOLE SIZE:                 62mm                             EASTING:         485,016.200 m E                                                                       COLLAR RL:        197.9 m

DRILL MODEL: Dormer Hand Auger                                                     BEARING / INCL:               0°   /    90°                 NORTHING:        7,090,845.300 m E                                                                     DATUM / ZONE: GDA94 / 56J




                                                                                                                                                                                                               CEMENTING/WEATHERING
                                                                                                                                                                                        CONSISTENCY/STRENGTH
                                                                                                                                                                   MOISTURE CONDITION




                                                                                                                                                                                                                                      PENETROMETER
                                                                                                                                                                                                                                      DYNAMIC CONE

                                                                                                                                                                                                                                      BLOWS/100mm
                        PENETRATION




                                                              GEOLOGICAL UNIT

                                                                                GROUP SYMBOL




                                                                                                                                                                                                                                                                                                      GROUNDWATER
                                                                                               GRAPHIC LOG
                                      ELEVATION
             SUPPORT
METHOD




                                                                                                                                                                                                                                                     SAMPLE
                                                      DEPTH




                       1 2 3                                                                                                                                                                                                          5 10 15
                                                                                                                          MATERIAL DESCRIPTION                                                                                                                             COMMENTS
                                                                                                                                                                                                                                                                                                 0
                                                    0m                                                       TOPSOIL: CLAY: low plasticity; pale brown to                                                                                                     0.0m - short grass surrounded by
                                                                                CL




                                                                                                             brown; fissured, flocced / aggregated by                                                                                                         weeds and clumps of longer grass
                                                                                                             biological activity; trace of rootlets (est 5%);                                                                                                 at surface, near lower extent of
                                                                                                             trace of decomposed organics in upper 10mm                                                                                                       bracken fern clump




                                                                                                                                                                   ~Wp

                                                                                                                                                                                        F-St
                                                                                                             (est 5%); cf topsoil                                                                                                                             0.2m - trace of medium grained,
                                                              COLLUVIUM




                                                                                                             CLAY: low plasticity; pale brown mottled                                                                                                         poorly graded, subangular phyllite
                                                                                CL




                                                                                                             orange, red; fissured, orange and red appear                                                                                                     lithic gravel (est 10%)
                                                                                                             to be relic weathered phyllite gravel; cf
                                                                                                             colluvium
                                                                                                             Gravelly CLAY: low plasticity; pale brown
                                                                                                             mottled white, pink, red, orange, yellow; fine        <Wp

                                                                                                                                                                                        VSt
                                                                                CL




                                          197.5m
                                                                                                             to medium grained, poorly graded,
                                                                                                             subangular to angular, highly weathered, low
                                                                                                             to moderate strength phyllite lithic gravel (est
                                                   0.5m                                                      40% to 50%); cf colluvium                                                                                                                        0.5m - gradational contact        0.5
HAND AUGER




                                                                                                             Clayey GRAVEL: fine to coarse grained, poorly
                                                              RESIDUAL SOIL
             OPEN




                                                                                                             graded, subangular to angular, extremely to
                                                                                                             highly weathered, verly low to moderate
                                                                                GC




                                                                                                             strength phyllite lithic gravel; orange mottled
                                                                                                                                                                                        D




                                                                                                             pale brown, white, pink, red, yellow; low
                                                                                                             plasticity clay (est 30%); distinct relic
                                                                                                             layering/foliation in material; cf residual soil

                                                                                                             PHYLLITE: fine grained; mottled orange, red,
                                                                                                             pink, white, pale brown, yellow; sericite in
                                                                                                                                                                   D




                                                                                                             distinct foliation; strength varies between
                                                              WEATHERED ROCK




                                          197m
                                                                                                             layers; cf Early Triassic, Kin Kin Beds                                                                                                          0.97m - sudden reduction in DCP
                                                                                                                                                                                                               XW-HW




                                                                                                                                                                                                                                                              penetration
                                                                                                                                                                                        VLS-MS




                                                    1m                                                                                                                                                                                                        1.0m - DCP refusal                 1




                                                                                                                                                                                                                                                              1.2m - EOH, auger just grinding
                                                                                                                                                                                                                                                              away




                                          196.5m




                                                   1.5m                                                                                                                                                                                                                                         1.5




                                          196m




                                                    2m                                                                                                                                                                                                                                           2




BOREHOLE COMMENTS:                                                                                                                                                                                                                                             LOGGING STANDARD: AS1726-2017
Borehole terminated on refusal, backfilled with cuttings, groundwater not encountered.