Slope Stability Report 26-5-2019 OPW19-0193

                                                                                                                                                                                                                                                                POINTID:             HA1
                                                                                                                               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:        485,016.700 m E                                                                       COLLAR RL:        200.7 m

DRILL MODEL: Dormer Hand Auger                                                       BEARING / INCL:              0°    /    90°               NORTHING:       7,090,858.800 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; brown grading                                                                                                  0.0m - short grass and weeds at




                                                                                                                                                                  ~Wp
                                                                                  CL




                                                                                                               downwards to pale brown; fissured, flocced /                                                                                                  surface, above upper extent of
                                                                COLLUVIUM




                                                                                                               aggregated by biological activity; trace of                                                                                                   bracken fern clump
                                                                                                               rootlets (est 5%); cf topsoil




                                                                                                                                                                                       F
                                                                                                               Gravelly CLAY: low plasticity; brown to pale




                                                                                                                                                                  <Wp
                                                                                  CL




                                          200.5m                                                               brown with orange - brown to orange gravel;
                                                                                                               fine to medium grained, poorly graded,
                                                                                                               subangular to angular, highly weathered, low                                                                                                  0.25m - gradational contact
                                                              RESIDUAL




                                                                                                               to moderate strength phyllite lithic gravel,
                                                                SOIL




                                                                                                                                                                  M-D

                                                                                                                                                                                       MD
                                                                                  GC




                                                                                                               distinct foliation (est 30% to 40%); cf
                                                                                                               colluvium
                                                                                                               Clayey GRAVEL: fine to coarse grained, poorly
HAND AUGER




                                                                                                               graded, subangular to angular, platy,
                                                                                                               extremely to highly weathered, very low to
             OPEN




                                                   0.5m                                                        moderate strength phyllite lithic gravel;
                                                                                                                                                                                                                                                                                               0.5




                                                                                                               orange - brown mottled white, red, pink,
                                                                                                               yellow; low plasticity clay (est 20% to 25%),
                                                                WEATHERED ROCK




                                                                                                               clay content decreasing with depth; cf
                                                                                                               residual soil
                                                                                                                                                                                                              XW-HW
                                                                                                                                                                                       VLS-MS




                                                                                                               PHYLLITE: fine grained; pale red - brown
                                                                                                                                                                  D




                                          200m
                                                                                                               mottled orange, yellow, pink, white; sericite
                                                                                                               in distinct foliation; strength variable in
                                                                                                               layers; cf Early Triassic, Kin Kin Beds                                                                                                       0.8m - DCP refusal




                                                                                                                                                                                                                                                             1.0m - EOH, auger just grinding
                                                    1m                                                                                                                                                                                                                                          1


                                                                                                                                                                                                                                                             away




                                          199.5m




                                                   1.5m                                                                                                                                                                                                                                        1.5




                                          199m




                                                    2m                                                                                                                                                                                                                                          2




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