REFERENCE DOCUMENTS - RAL25/0004 (As Published)

                    Table 1C              Groundwater Investigation Levels (GILs)

                                                                                                        Groundwater Investigation Levels
                                                                                                                   Marine          Drinking
                                           Substance                                Fresh WatersA
                                                                                                                   WatersA          WaterB
                                                                                          (µg/L)                    (µg/L)          (mg/L)
                                                                         Metals and Metalloids
                     Aluminium, Al pH>6.5                                                       55                    -                -
                     Antimony                                                                    -                    -              0.003
                                                                                      24 as As(III)
                     Arsenic                                                                                          -               0.01
                                                                                      13 as As(V)
                     Barium                                                                      -                    -                2
                     Beryllium                                                                   -                    -               0.06
                                                                                                        C
                     Boron                                                                  370                       -                4
                                                                                                                          D
                     Cadmium                                               H                    0.2                  0.7             0.002
                     Chromium, Cr (III)                                    H                     -                   27                -
                                                                                                    C
                     Chromium, Cr (VI)                                                          1                    4.4              0.05
                     Cobalt                                                                      -                    1                -
                     Copper                                                H                    1.4                  1.3               2
                     Iron, (Total)                                                               -                    -                -
                     Lead                                                  H                    3.4                  4.4              0.01
                                                                                                        C
                     Manganese                                                             1900                       -               0.5
                                                                                                        D                 D
                     Mercury (Total)                                                       0.06                      0.1             0.001
                     Molybdenum                                                                  -                    -               0.05
                     Nickel                                                H                    11                    7               0.02
                                                                                                 D
                     Selenium (Total)                                                           5                     -               0.01
                     Silver                                                                 0.05                     1.4              0.1
                                                                                                                              C
                     Tributyl tin (as Sn)                                                        -                  0.006              -
                     Tributyl tin oxide                                                          -                    -              0.001
                     Uranium                                                                     -                    -              0.017
                     Vanadium                                                                    -                   100               -
                                                                                                    C                     C
                     Zinc                                                  H                    8                    15                -
                                                                       Non-metallic Inorganics
                                   E
                     Ammonia (as NH3-N at pH 8)                                             900C                     910               -
                     Bromate                                                                     -                    -               0.02
                     Chloride                                                                    -                    -                -
                     Cyanide (as un-ionised Cn)                                                 7                     4               0.08
                     Fluoride                                                                    -                    -               1.5
                     Hydrogen sulphide (un-ionised H2S
                                                                                                1                     -                -
                     measured as S)
                     Iodide                                                                      -                    -               0.5
                     Nitrate (as NO3)                                                     refer to                 refer to            50


                    Schedule B 1 - Guideline on Investigation Levels for Soil and Groundwater                                                 66
                                                         Federal Register of Legislative Instruments F2013C00288
Document Set ID: 23717062
Version: 0, Version Date: 01/01/1900