2016-02-02 P&O Committee - Item 3 - Attachment 4 - Mary River Environmental Values and Water Quality Objectives

            Mary River environmental values and water quality objectives




            Table 5 Aquaculture EV: Water quality objectives for tropical aquaculture

                                                  Recommended range                                             Recommended range
                                                 Freshwater Marine                                                General aquatic
                     Water parameter                                               Water parameter
               Dissolved oxygen                      >4mg/L         >4mg/L        Arsenic                              <0.05mg/L
                             0
               Temperature C                          21–32         24–33         Cadmium                             <0.003mg/L
               pH                                    6.8–9.5         7–9.0        Calcium/Magnesium                   10–160mg/L
               Ammonia (TAN, total
               ammonia-nitrogen)                   <1.0mg/L        <1.0mg/L       Chromium                           <0.1mg/L
               Ammonia (NH3, un-ionised            <0.1mg/L        <0.1mg/L       Copper                       <0.006mg/L in soft water
               form)
               Nitrate (NO3)                      1–100mg/L         1–100         Cyanide                             <0.005mg/L
                                                                     mg/L
               Nitrite (NO2)                      <0.1mg/L         <1.0mg/L       Iron                                 <0.5mg/L
               Salinity                            0–5ppt          15–35 ppt      Lead                                <0.03mg/L
               Hardness                          20–450mg/L                       Manganese                           <0.01mg/L
               Alkalinity                          20–400          >100mg/L       Mercury                            <0.00005mg/L
                                                    mg/L
               Turbidity                          <80 NTU                         Nickel                       <0.01mg/L in soft water
                                                                                                               <0.04mg/L in hard water
               Chlorine                          <0.003mg/L                       Tin                                <0.001mg/L
               Hydrogen sulphide                 <0.002mg/L                       Zinc                       0.03–0.06 mg/L in soft water
                                                                                                                1–2 mg/L in hard water

            Source: Department of Primary Industries and Fisheries - Water Quality in Aquaculture—DPI Notes April 2004.

            Table 6 Aquaculture EV: Water quality objectives for optimal growth of particular species in
            freshwater
              Water parameter   Barramundi       Eel      Silver perch     Jade perch Sleepy cod        Redclaw
            Dissolved oxygen      4–9mg/L      >3mg/L        >4mg/L          >3mg/L       >4.0mg/L      >4.0mg/L
                               0
            Temperature C                   26–32           23–28             23–28             23–28             22–31          23–31
            pH                             7.5–8.5         7.0–8.5            6.5–9             6.5–9            7.0–8.5        7.0–8.5
            Ammonia (TAN,
            Total ammonia-                                <1.0mg/L                                              <1.0mg/L       <1.0mg/L
            nitrogen)
            Ammonia (NH3, un-
            ionised form)*pH             <0.46mg/L        <0.1mg/L           <0.1mg/L         <0.1mg/L          <0.1mg/L       <0.1mg/L
            dependent.
            Nitrate (NO3)                                                   <100mg/L
            Nitrite (NO2)                <1.5mg/L         <1.0mg/L           <0.1mg/L                           <1.0mg/L       <1.0mg/L
            Salinity (extended
                                          0–35ppt                              <5ppt            <5ppt                              <4ppt
            periods)
                                                                           5–10ppt for 1                       max. 20ppt
            Salinity bath                 0–35ppt
                                                                               hour                            for 1 hour
            Hardness (CaCO3)                                                 >50 mg/L         >50 mg/L          >40mg/L        >40mg/L
            Alkalinity                    >20mg/L                          100–400 ppm      100–400 ppm         >40mg/L        >40mg/L
            Chlorine                     <0.04mg/L                                                             <0.04mg/L
            Hydrogen sulphide            0–0.3mg/L                                                             0–0.3mg/L
            Iron                         <0.1mg/L                            <0.5mg/L         <0.5mg/L         <0.1mg/L        <0.1mg/L
            Spawning                                                                                          >24 for more
                                           Marine                             23–28             23–28
            temperature                                                                                       than 3 days

            Source: Department of Primary Industries and Fisheries - Water Quality in Aquaculture—DPI Notes April 2004.




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Document Set ID: 20002123
Version: 1, Version Date: 21/12/2015