Appendix 7-5 Detailed Cumulative Risk Impact Assessment Results for Aquatic Life
Table 1 Cumulative Ecological Risk to Aquatic Life at edge of Mixing Zone due to Chlorination By-products and other Pollutants (Scenario 1)
|
Pollutants |
Conc. in Effluent (mg/L) |
Conc. in Seawater (mg/L) |
Conc. at edge of Mixing Zone – Daily Max. (mg/L) |
Conc. at edge of Mixing Zone – Annual Avg. (mg/L) |
Conc. at edge of Mixing Zone – 4-day Avg. (mg/L) |
Conc. at edge of Mixing Zone – Lowest Seasonal Avg. (mg/L) |
Conc. at edge of Mixing Zone – 10%tile dilution factor (mg/L) |
Toxicity Reference Value (mg/L) |
Hazard Quotient (due to Effluent) |
Hazard Quotient (due to Background) |
|
Chlorination By-products (COCs) |
|
|
|
|
|
|
|
|
2.80E-01 |
0 |
|
Aluminum |
0.0159 |
0.0156 |
1.56E-02 |
1.56E-02 |
1.56E-02 |
1.56E-02 |
1.56E-02 |
1.5 |
1.04E-02 |
1.04E-02 |
|
Antimony |
0.000721 |
0.000258 |
2.65E-04 |
2.61E-04 |
2.60E-04 |
2.61E-04 |
2.62E-04 |
4.3 |
6.06E-05 |
6.00E-05 |
|
Barium |
0.0232 |
0.00665 |
6.92E-03 |
6.74E-03 |
6.73E-03 |
6.75E-03 |
6.79E-03 |
5 |
1.35E-03 |
1.33E-03 |
|
Chromium III |
0.00958 |
0.00028 |
4.30E-04 |
3.31E-04 |
3.27E-04 |
3.35E-04 |
3.61E-04 |
0.0274 |
1.21E-02 |
1.02E-02 |
|
Copper |
0.00859 |
0.00002 |
1.58E-04 |
6.71E-05 |
6.35E-05 |
7.04E-05 |
9.45E-05 |
0.005 |
1.89E-02 |
4.00E-03 |
|
Lead |
0.000128 |
0.000055 |
5.62E-05 |
5.54E-05 |
5.54E-05 |
5.54E-05 |
5.56E-05 |
0.0081 |
6.84E-03 |
6.79E-03 |
|
Nickel |
0.0262 |
0.00077 |
1.18E-03 |
9.10E-04 |
8.99E-04 |
9.20E-04 |
9.91E-04 |
0.005 |
1.98E-01 |
1.54E-01 |
|
Selenium |
0.00031 |
0.00007 |
7.39E-05 |
7.13E-05 |
7.12E-05 |
7.14E-05 |
7.21E-05 |
0.071 |
1.00E-03 |
9.86E-04 |
|
Silver |
0.000182 |
0.000006 |
8.84E-06 |
6.97E-06 |
6.89E-06 |
7.04E-06 |
7.53E-06 |
0.0014 |
4.98E-03 |
4.29E-03 |
|
Tin |
0.000844 |
0.00014 |
1.51E-04 |
1.44E-04 |
1.44E-04 |
1.44E-04 |
1.46E-04 |
0.0816 |
1.77E-03 |
1.72E-03 |
|
Vanadium |
0.0295 |
0.00173 |
2.18E-03 |
1.88E-03 |
1.87E-03 |
1.89E-03 |
1.97E-03 |
0.1 |
1.88E-02 |
1.73E-02 |
|
Zinc |
0.0141 |
0.00237 |
2.56E-03 |
2.43E-03 |
2.43E-03 |
2.44E-03 |
2.47E-03 |
0.02 |
1.24E-01 |
1.19E-01 |
|
Ammonia |
22 |
0.23 |
5.81E-01 |
3.50E-01 |
3.41E-01 |
3.58E-01 |
4.19E-01 |
0.91 |
3.84E-01 |
2.53E-01 |
|
Sulphide |
4.9 |
0.048 |
1.26E-01 |
7.47E-02 |
7.26E-02 |
7.65E-02 |
9.02E-02 |
0.1 |
7.65E-01 |
4.80E-01 |
|
TCDD |
1E-10 |
3.9E-11 |
4.00E-11 |
3.93E-11 |
3.93E-11 |
3.94E-11 |
3.95E-11 |
3.8E-08 |
1.04E-03 |
1.03E-03 |
|
Toluene |
0.012 |
0 |
1.94E-04 |
6.59E-05 |
6.09E-05 |
7.06E-05 |
1.04E-04 |
0.04 |
1.65E-03 |
0.00E+00 |
|
Diazinon |
0.000048 |
0 |
7.74E-07 |
2.64E-07 |
2.44E-07 |
2.82E-07 |
4.17E-07 |
0.00001 |
2.64E-02 |
0.00E+00 |
|
Malathion |
0.000031 |
0 |
5.00E-07 |
1.70E-07 |
1.57E-07 |
1.82E-07 |
2.70E-07 |
0.00002 |
8.52E-03 |
0.00E+00 |
|
|
|
|
|
|
|
|
|
Hazard Index |
1.87E+00 |
1.06E+00 |
|
|
Concentration adopted for Hazard Quotient calculation |
|
|
|
|
|
|
|
||
Table 2 Cumulative Ecological Risk to Aquatic Life at edge of Mixing Zone due to Contaminants of Concern (Scenario 2)
|
Pollutants |
Conc. in Effluent (mg/L) |
Conc. in Seawater (mg/L) |
Conc. at edge of Mixing Zone – Daily Max. (mg/L) |
Conc. at edge of Mixing Zone – Annual Avg. (mg/L) |
Conc. at edge of Mixing Zone – 4-day Avg. (mg/L) |
Conc. at edge of Mixing Zone – Lowest Seasonal Avg. (mg/L) |
Conc. at edge of Mixing Zone – 10%tile dilution factor (mg/L) |
Toxicity Reference Value (mg/L) |
Hazard Quotient (due to Effluent) |
Hazard Quotient (due to Background) |
|
Chlorination By-products (COCs) |
|
|
|
|
|
|
|
|
2.93E-01 |
0 |
|
Aluminum |
0.0159 |
0.0156 |
1.56E-02 |
1.56E-02 |
1.56E-02 |
1.56E-02 |
1.56E-02 |
1.5 |
1.04E-02 |
1.04E-02 |
|
Antimony |
0.000721 |
0.000258 |
2.66E-04 |
2.61E-04 |
2.60E-04 |
2.61E-04 |
2.62E-04 |
4.3 |
6.06E-05 |
6.00E-05 |
|
Barium |
0.0232 |
0.00665 |
6.93E-03 |
6.75E-03 |
6.74E-03 |
6.75E-03 |
6.80E-03 |
5 |
1.35E-03 |
1.33E-03 |
|
Chromium III |
0.00958 |
0.00028 |
4.35E-04 |
3.34E-04 |
3.29E-04 |
3.37E-04 |
3.65E-04 |
0.0274 |
1.22E-02 |
1.02E-02 |
|
Copper |
0.00859 |
0.00002 |
1.63E-04 |
6.95E-05 |
6.56E-05 |
7.29E-05 |
9.79E-05 |
0.005 |
1.96E-02 |
4.00E-03 |
|
Lead |
0.000128 |
0.000055 |
5.62E-05 |
5.54E-05 |
5.54E-05 |
5.55E-05 |
5.57E-05 |
0.0081 |
6.84E-03 |
6.79E-03 |
|
Nickel |
0.0262 |
0.00077 |
1.19E-03 |
9.17E-04 |
9.05E-04 |
9.27E-04 |
1.00E-03 |
0.005 |
2.00E-01 |
1.54E-01 |
|
Selenium |
0.00031 |
0.00007 |
7.40E-05 |
7.14E-05 |
7.13E-05 |
7.15E-05 |
7.22E-05 |
0.071 |
1.00E-03 |
9.86E-04 |
|
Silver |
0.000182 |
0.000006 |
8.93E-06 |
7.02E-06 |
6.94E-06 |
7.09E-06 |
7.60E-06 |
0.0014 |
5.01E-03 |
4.29E-03 |
|
Tin |
0.000844 |
0.00014 |
1.52E-04 |
1.44E-04 |
1.44E-04 |
1.44E-04 |
1.46E-04 |
0.0816 |
1.77E-03 |
1.72E-03 |
|
Vanadium |
0.0295 |
0.00173 |
2.19E-03 |
1.89E-03 |
1.88E-03 |
1.90E-03 |
1.98E-03 |
0.1 |
1.89E-02 |
1.73E-02 |
|
Zinc |
0.0141 |
0.00237 |
2.57E-03 |
2.44E-03 |
2.43E-03 |
2.44E-03 |
2.48E-03 |
0.02 |
1.24E-01 |
1.19E-01 |
|
Ammonia |
22 |
0.23 |
5.93E-01 |
3.56E-01 |
3.46E-01 |
3.64E-01 |
4.28E-01 |
0.91 |
3.91E-01 |
2.53E-01 |
|
Sulphide |
4.9 |
0.048 |
1.29E-01 |
7.60E-02 |
7.38E-02 |
7.80E-02 |
9.21E-02 |
0.1 |
7.80E-01 |
4.80E-01 |
|
TCDD |
1E-10 |
3.9E-11 |
4.00E-11 |
3.94E-11 |
3.93E-11 |
3.94E-11 |
3.96E-11 |
3.8E-08 |
1.04E-03 |
1.03E-03 |
|
Toluene |
0.012 |
0 |
2.00E-04 |
6.94E-05 |
6.38E-05 |
7.41E-05 |
1.09E-04 |
0.04 |
1.73E-03 |
0.00E+00 |
|
Diazinon |
0.000048 |
0 |
8.00E-07 |
2.77E-07 |
2.55E-07 |
2.96E-07 |
4.36E-07 |
0.00001 |
2.77E-02 |
0.00E+00 |
|
Malathion |
0.000031 |
0 |
5.17E-07 |
1.79E-07 |
1.65E-07 |
1.91E-07 |
2.82E-07 |
0.00002 |
8.96E-03 |
0.00E+00 |
|
|
|
|
|
|
|
|
|
Hazard Index |
1.90E+00 |
1.06E+00 |
|
|
Concentration adopted for Hazard Quotient calculation |
|
|
|
|
|
|
|
||
Table 3 Cumulative Ecological Risk to Aquatic Life at edge of Mixing Zone due to Chlorination By-products and other Pollutants (Scenario 3)
|
Pollutants |
Conc. in Effluent (mg/L) |
Conc. in Seawater (mg/L) |
Conc. at edge of Mixing Zone – Daily Max. (mg/L) |
Conc. at edge of Mixing Zone – Annual Avg. (mg/L) |
Conc. at edge of Mixing Zone – 4-day Avg. (mg/L) |
Conc. at edge of Mixing Zone – Lowest Seasonal Avg. (mg/L) |
Conc. at edge of Mixing Zone – 10%tile dilution factor (mg/L) |
Toxicity Reference Value (mg/L) |
Hazard Quotient (due to Effluent) |
Hazard Quotient (due to Background) |
|
Chlorination By-products (COCs) |
|
|
|
|
|
|
|
|
3.95E-01 |
0 |
|
Aluminum |
0.0159 |
0.0156 |
1.56E-02 |
1.56E-02 |
1.56E-02 |
1.56E-02 |
1.56E-02 |
1.5 |
1.04E-02 |
1.04E-02 |
|
Antimony |
0.000721 |
0.000258 |
2.67E-04 |
2.62E-04 |
2.62E-04 |
2.62E-04 |
2.64E-04 |
4.3 |
6.09E-05 |
6.00E-05 |
|
Barium |
0.0232 |
0.00665 |
6.98E-03 |
6.79E-03 |
6.78E-03 |
6.80E-03 |
6.87E-03 |
5 |
1.36E-03 |
1.33E-03 |
|
Chromium III |
0.00958 |
0.00028 |
4.66E-04 |
3.59E-04 |
3.52E-04 |
3.64E-04 |
4.06E-04 |
0.0274 |
1.31E-02 |
1.02E-02 |
|
Copper |
0.00859 |
0.00002 |
1.91E-04 |
9.26E-05 |
8.59E-05 |
9.72E-05 |
1.36E-04 |
0.005 |
2.72E-02 |
4.00E-03 |
|
Lead |
0.000128 |
0.000055 |
5.65E-05 |
5.56E-05 |
5.56E-05 |
5.57E-05 |
5.60E-05 |
0.0081 |
6.86E-03 |
6.79E-03 |
|
Nickel |
0.0262 |
0.00077 |
1.28E-03 |
9.86E-04 |
9.66E-04 |
9.99E-04 |
1.11E-03 |
0.005 |
2.23E-01 |
1.54E-01 |
|
Selenium |
0.00031 |
0.00007 |
7.48E-05 |
7.20E-05 |
7.18E-05 |
7.22E-05 |
7.32E-05 |
0.071 |
1.01E-03 |
9.86E-04 |
|
Silver |
0.000182 |
0.000006 |
9.52E-06 |
7.49E-06 |
7.35E-06 |
7.59E-06 |
8.38E-06 |
0.0014 |
5.35E-03 |
4.29E-03 |
|
Tin |
0.000844 |
0.00014 |
1.54E-04 |
1.46E-04 |
1.45E-04 |
1.46E-04 |
1.50E-04 |
0.0816 |
1.79E-03 |
1.72E-03 |
|
Vanadium |
0.0295 |
0.00173 |
2.29E-03 |
1.97E-03 |
1.94E-03 |
1.98E-03 |
2.11E-03 |
0.1 |
1.97E-02 |
1.73E-02 |
|
Zinc |
0.0141 |
0.00237 |
2.60E-03 |
2.47E-03 |
2.46E-03 |
2.48E-03 |
2.53E-03 |
0.02 |
1.26E-01 |
1.19E-01 |
|
Ammonia |
22 |
0.23 |
6.65E-01 |
4.14E-01 |
3.97E-01 |
4.26E-01 |
5.24E-01 |
0.91 |
4.55E-01 |
2.53E-01 |
|
Sulphide |
4.9 |
0.048 |
1.45E-01 |
8.91E-02 |
8.53E-02 |
9.17E-02 |
1.14E-01 |
0.1 |
9.17E-01 |
4.80E-01 |
|
TCDD |
1E-10 |
3.9E-11 |
4.02E-11 |
3.95E-11 |
3.95E-11 |
3.95E-11 |
3.98E-11 |
3.8E-08 |
1.04E-03 |
1.03E-03 |
|
Toluene |
0.012 |
0 |
2.40E-04 |
1.02E-04 |
9.23E-05 |
1.08E-04 |
1.62E-04 |
0.04 |
2.54E-03 |
0.00E+00 |
|
Diazinon |
0.000048 |
0 |
9.60E-07 |
4.07E-07 |
3.69E-07 |
4.32E-07 |
6.49E-07 |
0.00001 |
4.07E-02 |
0.00E+00 |
|
Malathion |
0.000031 |
0 |
6.20E-07 |
2.63E-07 |
2.38E-07 |
2.79E-07 |
4.19E-07 |
0.00002 |
1.31E-02 |
0.00E+00 |
|
|
|
|
|
|
|
|
|
Hazard Index |
2.26E+00 |
1.06E+00 |
|
|
Concentration adopted for Hazard Quotient calculation |
|
|
|
|
|
|
|
||
Table 4 Cumulative Ecological Risk to Aquatic Life at edge of Mixing Zone due to Chlorination By-products and other Pollutants (Scenario 4)
|
Pollutants |
Conc. in Effluent (mg/L) |
Conc. in Seawater (mg/L) |
Conc. at edge of Mixing Zone – Daily Max. (mg/L) |
Conc. at edge of Mixing Zone – Annual Avg. (mg/L) |
Conc. at edge of Mixing Zone – 4-day Avg. (mg/L) |
Conc. at edge of Mixing Zone – Lowest Seasonal Avg. (mg/L) |
Conc. at edge of Mixing Zone – 10%tile dilution factor (mg/L) |
Toxicity Reference Value (mg/L) |
Hazard Quotient (due to Effluent) |
Hazard Quotient (due to Background) |
|
Chlorination By-products (COCs) |
|
|
|
|
|
|
|
|
4.52E-01 |
0.00E+00 |
|
Aluminum |
0.0159 |
0.0156 |
1.56E-02 |
1.56E-02 |
1.56E-02 |
1.56E-02 |
1.56E-02 |
1.5 |
1.04E-02 |
1.04E-02 |
|
Antimony |
0.000721 |
0.000258 |
2.69E-04 |
2.62E-04 |
2.62E-04 |
2.62E-04 |
2.65E-04 |
4.3 |
6.10E-05 |
6.00E-05 |
|
Barium |
0.0232 |
0.00665 |
7.03E-03 |
6.81E-03 |
6.78E-03 |
6.81E-03 |
6.91E-03 |
5 |
1.36E-03 |
1.33E-03 |
|
Chromium III |
0.00958 |
0.00028 |
4.96E-04 |
3.69E-04 |
3.53E-04 |
3.69E-04 |
4.25E-04 |
0.0274 |
1.35E-02 |
1.02E-02 |
|
Copper |
0.00859 |
0.00002 |
2.19E-04 |
1.02E-04 |
8.75E-05 |
1.02E-04 |
1.54E-04 |
0.005 |
3.08E-02 |
4.00E-03 |
|
Lead |
0.000128 |
0.000055 |
5.67E-05 |
5.57E-05 |
5.56E-05 |
5.57E-05 |
5.61E-05 |
0.0081 |
6.86E-03 |
6.79E-03 |
|
Nickel |
0.0262 |
0.00077 |
1.36E-03 |
1.01E-03 |
9.70E-04 |
1.01E-03 |
1.17E-03 |
0.005 |
2.33E-01 |
1.54E-01 |
|
Selenium |
0.00031 |
0.00007 |
7.56E-05 |
7.23E-05 |
7.19E-05 |
7.23E-05 |
7.38E-05 |
0.071 |
1.01E-03 |
9.86E-04 |
|
Silver |
0.000182 |
0.000006 |
1.01E-05 |
7.69E-06 |
7.39E-06 |
7.69E-06 |
8.75E-06 |
0.0014 |
5.49E-03 |
4.29E-03 |
|
Tin |
0.000844 |
0.00014 |
1.56E-04 |
1.47E-04 |
1.46E-04 |
1.47E-04 |
1.51E-04 |
0.0816 |
1.80E-03 |
1.72E-03 |
|
Vanadium |
0.0295 |
0.00173 |
2.38E-03 |
2.00E-03 |
1.95E-03 |
2.00E-03 |
2.16E-03 |
0.1 |
2.00E-02 |
1.73E-02 |
|
Zinc |
0.0141 |
0.00237 |
2.64E-03 |
2.48E-03 |
2.46E-03 |
2.48E-03 |
2.55E-03 |
0.02 |
1.28E-01 |
1.19E-01 |
|
Ammonia |
22 |
0.23 |
7.36E-01 |
4.39E-01 |
4.01E-01 |
4.39E-01 |
5.70E-01 |
0.91 |
4.83E-01 |
2.53E-01 |
|
Sulphide |
4.9 |
0.048 |
1.61E-01 |
9.47E-02 |
8.62E-02 |
9.47E-02 |
1.24E-01 |
0.1 |
9.47E-01 |
4.80E-01 |
|
TCDD |
1E-10 |
3.9E-11 |
4.04E-11 |
3.96E-11 |
3.95E-11 |
3.96E-11 |
4.00E-11 |
3.8E-08 |
1.04E-03 |
1.03E-03 |
|
Toluene |
0.012 |
0 |
2.79E-04 |
1.15E-04 |
9.45E-05 |
1.15E-04 |
1.88E-04 |
0.04 |
2.88E-03 |
0.00E+00 |
|
Diazinon |
0.000048 |
0 |
1.12E-06 |
4.62E-07 |
3.78E-07 |
4.62E-07 |
7.50E-07 |
0.00001 |
4.62E-02 |
0.00E+00 |
|
Malathion |
0.000031 |
0 |
7.21E-07 |
2.98E-07 |
2.44E-07 |
2.98E-07 |
4.84E-07 |
0.00002 |
1.49E-02 |
0.00E+00 |
|
|
|
|
|
|
|
|
|
Hazard Index |
2.40E+00 |
1.06E+00 |
|
|
Concentration adopted for Hazard Quotient calculation |
|
|
|
|
|
|
|
||
Table 5 Cumulative Ecological Risk to Aquatic Life at edge of Mixing Zone due to Chlorination By-products and other Pollutants (Scenario 5)
|
Pollutants |
Conc. in Effluent (mg/L) |
Conc. in Seawater (mg/L) |
Conc. at edge of ZID – Daily Max. (mg/L) |
Conc. at edge of ZID – Annual Avg. (mg/L) |
Conc. at edge of ZID – 4-day Avg. (mg/L) |
Conc. at edge of ZID – Lowest Seasonal Avg. (mg/L) |
Conc. at edge of ZID – 10%tile dilution factor (mg/L) |
Toxicity Reference Value (mg/L) |
Hazard Quotient (due to Effluent) |
Hazard Quotient (due to Background) |
|
Chlorination By-products (COCs) |
|
|
|
|
|
|
|
|
2.83E-01 |
0 |
|
Antimony |
0.000782 |
0.000258 |
2.70E-04 |
2.63E-04 |
2.62E-04 |
2.63E-04 |
2.66E-04 |
4.3 |
6.12E-05 |
6.00E-05 |
|
Barium |
0.0237 |
0.00665 |
7.05E-03 |
6.81E-03 |
6.78E-03 |
6.81E-03 |
6.92E-03 |
5 |
1.36E-03 |
1.33E-03 |
|
Chromium III |
0.00844 |
0.00028 |
4.70E-04 |
3.58E-04 |
3.44E-04 |
3.58E-04 |
4.08E-04 |
0.0274 |
1.31E-02 |
1.02E-02 |
|
Copper |
0.00663 |
0.00002 |
1.74E-04 |
8.36E-05 |
7.20E-05 |
8.36E-05 |
1.23E-04 |
0.005 |
2.47E-02 |
4.00E-03 |
|
Nickel |
0.0223 |
0.00077 |
1.27E-03 |
9.77E-04 |
9.40E-04 |
9.77E-04 |
1.11E-03 |
0.005 |
2.21E-01 |
1.54E-01 |
|
Selenium |
0.00013 |
0.00007 |
7.14E-05 |
7.06E-05 |
7.05E-05 |
7.06E-05 |
7.09E-05 |
0.071 |
9.93E-04 |
9.86E-04 |
|
Silver |
0.000099 |
0.000006 |
8.16E-06 |
6.89E-06 |
6.73E-06 |
6.89E-06 |
7.45E-06 |
0.0014 |
4.92E-03 |
4.29E-03 |
|
Tin |
0.000457 |
0.00014 |
1.47E-04 |
1.43E-04 |
1.42E-04 |
1.43E-04 |
1.45E-04 |
0.0816 |
1.75E-03 |
1.72E-03 |
|
Vanadium |
0.0313 |
0.00173 |
2.42E-03 |
2.01E-03 |
1.96E-03 |
2.01E-03 |
2.19E-03 |
0.1 |
2.01E-02 |
1.73E-02 |
|
Zinc |
0.00979 |
0.00237 |
2.54E-03 |
2.44E-03 |
2.43E-03 |
2.44E-03 |
2.49E-03 |
0.02 |
1.24E-01 |
1.19E-01 |
|
Ammonia |
4.2 |
0.23 |
3.22E-01 |
2.68E-01 |
2.61E-01 |
2.68E-01 |
2.92E-01 |
0.91 |
2.95E-01 |
2.53E-01 |
|
Sulphide |
0.053 |
0.048 |
4.81E-02 |
4.80E-02 |
4.80E-02 |
4.80E-02 |
4.81E-02 |
0.1 |
4.80E-01 |
4.80E-01 |
|
TCDD |
6.2E-11 |
3.9E-11 |
3.95E-11 |
3.92E-11 |
3.92E-11 |
3.92E-11 |
3.94E-11 |
3.8E-08 |
1.03E-03 |
1.03E-03 |
|
Diazinon |
0.000058 |
0 |
1.35E-06 |
5.58E-07 |
4.57E-07 |
5.58E-07 |
9.06E-07 |
0.00001 |
5.58E-02 |
0.00E+00 |
|
Malathion |
0.000015 |
0 |
3.49E-07 |
1.44E-07 |
1.18E-07 |
1.44E-07 |
2.34E-07 |
0.00002 |
7.21E-03 |
0.00E+00 |
|
|
|
|
|
|
|
|
|
Hazard Index |
1.53E+00 |
1.06E+00 |
|
|
Concentration adopted for Hazard Quotient calculation |
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