2016-02-02 P&O Committee - Item 3 - Attachment 3 - Noosa River Environmental Values and Water Quality Objectives

Noosa River environmental values and water quality objectives




Table 10 Irrigation EV: Water quality objectives for heavy metals and metalloids in agricultural
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irrigation water – long-term trigger value (LTV), short-term trigger value (STV) and soil cumulative
contamination loading limit (CCL)
Element           Soil cumulative             Long-term trigger value (LTV) in    Short-term trigger value
                  contaminant loading limit irrigation water (up to 100 yrs)      (STV) in irrigation water
                                2
                  (CCL - kg/ha)               (mg/L)                              (up to 20 yrs) (mg/L)
Aluminium         ND                          5                                   20
Arsenic           20                          0.1                                 2.0
Beryllium         ND                          0.1                                 0.5
Boron             ND                          0.5                                 Refer to AWQG (2000)
                                                                                  Vol 3,Table 9.2.18
Cadmium           2                           0.01                                0.05
Chromium          ND                          0.1                                 1
Cobalt            ND                          0.05                                0.1
Copper            140                         0.2                                 5
Fluoride          ND                          1                                   2
Iron              ND                          0.2                                 10
Lead              260                         2                                   5
Lithium           ND                          2.5                                 2.5
                                              (0.075 for Citrus crops)            (0.075 for Citrus crops)
Manganese         ND                          0.2                                 10
Mercury           2                           0.002                               0.002
Molybdenum        ND                          0.01                                0.05
Nickel            85                          0.2                                 2
Selenium          10                          0.02                                0.05
Uranium           ND                          0.01                                0.1
Vanadium          ND                          0.1                                 0.5
Zinc              300                         2                                   5
Source: AWQG (2000), Volume 1, Section 4.2.6, Table 4.2.10

Notes:
1. Concentrations in irrigation water should be less than the trigger values. Trigger values should only be used in
   conjunction with information on each individual element and the potential for off-site transport of contaminants (refer
   AWQG [2000], Volume 3, Section 9.2.5)
2. ND = Not determined; insufficient background data to calculate CCL




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