Geotech Report Reference Document OPW19-0239 · OPW19/0239

Gympie Terrace Noosaville Pty Ltd



Table 1: Summary of laboratory testing
             Sample Depth                                         Atterberg Limits              Aggressivity
      Sample                           Material Type       Liquid     Plastic   Plastic   pH     Sulfate   Chloride
     Location      From       To          (USC)             Limit      Limit    Index             (SO4)     mg/kg
                    (m)       (m)
                                                             (%)        (%)                      mg/kg
                                        Silty Sandy
       BH1          8.5       8.7                            47         19           28    -        -            -
                                        CLAY (CI)
       BH2          7.0       7.2      CLAY (CI-CH)          49         17           32    -        -            -
       BH1          3.0       3.2       SAND (SP)             -          -           -    5.7      <30          <5

The laboratory test results generally confirm field soil classifications. Test results are further discussed in
Section 6.0.

5.0         RESULTS OF INVESTIGATION
     5.1 Published Geological Information & Acid Sulfate Soil Information
Published information 1 indicates that the site is underlain by Quaternary aged “estuarine channels and banks
comprising sandy mud, muddy sand and minor gravel.” An extract of the relevant geological map is shown in
Image 2.
The subsurface conditions encountered (described in Section 5.2) generally confirm the published geology;
and are similar to conditions previously encountered on nearby sites.




                                                              Approximate Site Location




Image 2: Extract from published geology map.

Published ASS maps 2 indicate that the site is in an area zoned as SDL, Disturbed land likely to contain ASS.
Image 3 below illustrates the sites location on the relevant ASS map.




1   GYMPIE SPECIAL 1:100,000 Geol. Map, Sheet 9445 and Part 9545, DME, 1999
2   Acid Sulfate Soils Redcliffe to Teewah Map 2 DNR-SEA-I-A0 3235




J000799-002-R-Rev0                                                                                             Page 3