1 - GEOTECHNICAL INVESTIGATION REPORT - 150320 LAR Road Investigation Ridgewood Geotech 23042015_Rev1-Combined

                                 GEOTECHNICAL TERMS AND SYMBOLS (cont’d)
Symbols Used on Soil and Rock Logs
WATER
                        Water level at date shown                                  Partial water loss
                        Water inflow                                               Complete water loss
    GROUNDWATER NOT              The observation of groundwater, whether present or not, was not possible due to drilling water,
    OBSERVED                     surface seepage or cave in of the borehole/test pit.
                                 The borehole/test pit was dry soon after excavation. However, groundwater could be present in
    GROUNDWATER NOT
                                 less permeable strata. Inflow may have been observed had the borehole/test pit been left open
    ENCOUNTERED
                                 for a longer period.
ROCK STRENGTH TEST RESULTS
                   ●             Point Load Strength Index, Is(50), Axial test (MPa)
                   ○             Point Load Strength Index, Is(50), Diametral test (MPa)
                   □             Point Load Strength Index, Is(50), Irregular Lump or Block test (MPa)

Abbreviations Used on Soil and Rock Logs
DRILLING/EXCAVATION METHOD
    AS         Auger Screwing               DT        Diatube                               NQ3      Diameter Core - 45 mm
    ADT        Auger Drilling TC Bit        E         Excavator                             R        Ripper
    ADV        Auger Drilling V-Bit         EH        Excavator with Hammer                 RR       Rotary with Rock Roller
    AT         Air Track                    HA        Hand Auger                            X        Existing Excavation
    B          Bulldozer Blade              HMLC      Core Diameter 63 mm
    BB         Rotary Blade Bit             HQ3       Core Diameter 61 mm
    BH         Backhoe Bucket               N         Natural Exposure
    CT         Cable Tool                   NMLC      Core Diameter 52 mm

PENETRATION/EXCAVATION RESISTANCE
VE             Very Easy – Rapid penetration possible with very little effort from the equipment used
E              Easy – Excavation possible with little effort from the equipment used.
F              Firm/Moderate – Excavation possible with moderate effort from the equipment used.
H              High – High resistance to penetration/excavation with penetration only possible at a slow rate requiring significant
               effort from the equipment used.
VH             Very High – Practical or actual refusal to penetration/excavation with the equipment used.
These assessments are subjective and are dependent on many factors including the equipment power, weight, condition of
excavation or drilling tools, and the experience of the operator.

SAMPLES AND FIELD TESTS
    SPT                  Standard Penetration Test to AS1289.6.3.1-1993
          Example 1      SPT 1,4,6 N = 10 means 1,4 and 6 blows for consecutive 150 mm penetration and the N value is the sum of the
                         last 300mm of penetration following the first 150mm of seating penetration.
          Example 2      SPT 25, 30/100 mm means where practical refusal occurs, the blows and penetration are recorded within the
                         refusal depth interval. The N value is recorded as N = R, where R indicates refusal.
          RW             Penetration occurred under the rod weight only
          HW             Penetration occurred under the SPT hammer and rod weight only
          HB             SPT hammer double bouncing on anvil
    D                    Disturbed sample
    B                    Bulk sample
    BLK                  Block sample
    C                    Core sample
    ES                   Environmental soil sample
    EW                   Environmental water sample
    FP                   Field permeability test over section noted
                                                                                                                Rev0, 20/09/2013
Rev0, 20/09/2013
                                                                                        Rev0, 20/09/2013ev0, 20/09/2013