RFI 10.03.2020 - Appendix C - Memorandum cooroibah waterway crossing · MCU16/0099.01

 Water           Support
▼      Measurement standing water level and date           C       Casing

∇      Water Noted                                         M       Mud
       Water inflow                                        W       Water
▼
▼




       Water / drilling fluid loss




3.     Drilling method

BH        Backhoe bucket (rubber tyred machine)                    Rotary drilling with flushing of cuttings using
EX        Excavator bucket (tracked machine)               RA      -   air circulation
HA        Hand Auger                                       RM      -   bentonite or polymer mud circulation
                                                           RC      -   water circulation
AV        Auger drilling with steel “V” bit                NMLC    Coring using an NMLC core barrel

AT        Auger drilling with Tungsten Carbide (TC) bit    RR      Tricone (Rock Roller) Bit
HOA       Hollow Auger                                     DB      Drag (Blade) Bit




Field Sampling and Testing
Symbol             Sample or Test                         Symbol   Sample or Test
W                  Water Sample                           RW       Rod Weight only causing penetration (N < I)
                                                                   Hammer and rod weight only causing full
D                  Disturbed Sample                       HW
                                                                   penetration (N < I)
B                  Bulk Disturbed Sample                  HB       Hammer Bouncing
SPT                Standard Penetration Test              U (50)   Undisturbed Sample (50mm diameter tube)
                   Example of blows per 150mm
7, 11, 12 (eg)                                            PP       Pocket Penetrometer Test (kPa)
                   penetration over 450mm
                   Penetration Resistance (blows
                   for 300mm of penetration
N = 23 (eg)                                               FV       Field Shear Vane (kPa)
                   following 150mm seating drived
                   ie 11 + 12 = 23
                                                                   Rock Quality Designation expressed as:
                   Partial Penetration- example of
25/20mm (eg)       recorded    blows     for   the        RQD      Sum of lengths of sound core pieces > 100mm
                   measured penetration
                                                                   Total Length of core section considered
                                                                   Dynamic Cone Penetrometer measured in
N*                 Inferred SPT Value                     DCP
                                                                   blows / 100mm




FILE     P:\WP\ADMIN\GEOTECH\MISCELLANEOUS\ADMIN\FORMS\FORMS\EXPLANATORY
NOTES\EXPLANATORY NOTES AURECON 2018 V2 (002).DOC  26 February 2018  PAGE 5