T6.11 Baseline water quality results (spring tide) (cont’d) WQ4 WQ3 (Estuarine) WQ7 (Marine) WQ13 (Marine) (Estuarine) Parameter Unit Ebbing Flooding Flooding Ebbing Flooding Ebbing Flooding Surface Surface Surface Surface Surface Surface Surface pH 7.86 7.57 8.72 8 7.79 8.02 7.9 Temperature oC 29.2 28.9 27.3 30.6 29.2 30.2 28.8 DO mg/L 1.6 1.4 5.4 2.8 1.4 1.4 1.1 Salinity ppt 1.84 15.06 0.04 4.48 4.25 1.88 2.96 Conductivity uS/cm 3,808 24,906 81.6 8,152 7,753 3,598 551 Turbidity NTU 6 6 4 4 6 5 6 TSS 17 19 6 13 14 10 15 COD 20 14 15 18 19 18 13 BOD 7 5 5 7 7 6 6 Oil & Grease <1 <1 <1 <1 <1 <1 <1 TOC 2.5 0.7 0.8 2.8 2.7 0.7 0.4 Chlorophyll -A <0.5 0.7 <0.5 <0.5 <0.5 <0.5 0.6 Ammoniacal Nitrogen (NH 3-N) 0.01 0.05 0.33 0.03 0.23 0.05 0.11 Nitrate 0.91 0.22 0.27 2.86 0.17 2.43 0.46 Phosphate mg/L 0.27 0.34 9.29 0.43 0.04 0.48 0.33 Cadmium (Cd) <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 Chromium (Cr) <0.001 <0.001 <0.001 <0.001 <0.001 0.002 0.002 Arsenic (As*) <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 Environment Existing | 6 Chapter Lead (Pb) <0.001 <0.001 <0.001 0.002 0.001 <0.001 <0.001 Copper (Cu) <0.001 <0.001 <0.001 <0.001 <0.001 0.002 0.001 Manganese (Mn) 0.022 0.030 0.005 0.103 0.138 0.076 0.047 Report Main 2: Volume Nickel (Ni) <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 0.010 Iron (Fe) 0.26 0.17 0.12 1.04 0.66 0.58 0.71 E. coli <1 <1 <1 <1 <1 <1 <1 cfu/100 ml 6-46 Faecal Coliform 1,700 7,200 6,100 79,000 900 69,000 135,000 Notes: DO: Dissolved Oxygen COD: Chemical Oxygen Demand BOD: Biochemical Oxygen Demand TOC: Total Organic Carbon Environmental Impact Assessment (2 Penan Assessment the for Impact Works Dredging Environmental & Reclamation Proposed 6-47 T6.12 Baseline water quality results (neap tide) WQ1 (Marine) WQ2 (Marine) Parameter Unit Ebbing (27.0 m) Flooding (25.9 m) Ebbing (19.0 m) Flooding (19.1 m) Surface Middle Bottom Surface Middle Bottom Surface Middle Bottom Surface Middle Bottom pH 8.57 8.52 8.47 8.60 8.55 8.55 8.52 8.55 8.53 8.53 8.47 8.51 Temperature oC 30.0 29.7 29.7 30.0 29.7 29.6 30.2 29.6 29.6 30.0 29.3 29.5 DO mg/L 4.71 5.01 4.41 5.11 5.02 4.70 4.91 5.28 5.61 5.27 4.44 5.15 Salinity ppt 31.92 32.03 32.05 31.93 31.97 32.06 31.94 31.90 32.02 31.92 32.25 31.91 Conductivity uS/cm 49,087 49,216 49,248 49,103 49,124 49,255 49,110 49,044 49,179 49,083 49,505 49,036 Turbidity NTU 1 4 8 1 1 11 <1 <1 <1 <1 <1 5 nd Schedule) Study Study Schedule) TSS 10 12 16 8 10 20 7 6 6 9 7 15 COD 16 18 20 18 17 16 19 19 15 15 16 17 BOD 4 6 8 5 4 4 8 7 4 4 4 5 Oil & Grease <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 g South Reclamation (PSR) (PSR) Reclamation South g TOC 0.4 0.3 0.4 0.1 0.5 0.2 0.3 0.3 0.3 0.3 0.3 0.3 Chlorophyll -A <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 Ammoniacal 0.08 0.10 0.36 0.08 0.12 0.09 0.08 0.09 0.10 0.20 0.07 0.11 Nitrogen (NH 3-N) Nitrate <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 0.05 mg/L Phosphate <0.01 0.02 0.022 <0.01 0.01 0.02 0.12 0.02 0.02 0.01 0.02 0.02 Cadmium (Cd) <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 Chromium (Cr) <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 Arsenic (As*) 0.003 0.002 0.003 0.002 0.001 0.001 0.003 0.001 0.001 0.002 0.001 0.002 Lead (Pb) <0.001 <0.001 0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 Copper (Cu) <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 0.015 <0.001 Manganese (Mn) 0.001 0.004 0.019 <0.001 0.002 0.013 <0.001 <0.001 <0.001 <0.001 0.002 0.011 Nickel (Ni) <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 Iron (Fe) 0.03 0.16 0.30 0.16 0.15 0.33 0.09 0.07 0.03 0.14 0.11 0.22 E. coli cfu/100 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 Faecal Coliform ml <1 2,000 400 500 74,000 1,100 <1 4,500 700 <1 <1 200 Notes: DO: Dissolved Oxygen COD: Chemical Oxygen Demand BOD: Biochemical Oxygen Demand TOC: Total Organic Carbon T6.12 Baseline water quality results (neap tide) (cont’d) WQ5 (Marine) WQ6 (Marine) WQ8 (Marine) Ebbing Flooding Ebbing Flooding Parameter Unit Ebbing (7.2 m) Flooding (7.0 m) (1.8 m) (1.6 m) (1.2 m) (0.9 m) Surface Surface Surface Surface Surface Middle Bottom Surface Middle Bottom pH 8.61 8.72 8.86 8.56 8.69 8.65 8.64 8.07 8.34 8.31 Temperature oC 31.3 29.7 32.0 29.4 30.5 30.1 30.0 29.4 29.6 29.7 DO mg/L 6.63 5.62 8.90 5.55 6.94 6.32 6.11 5.28 4.70 5.11 Salinity ppt 31.25 31.26 30.11 28.53 31.36 31.56 31.61 30.86 31.05 31.08 Conductivity uS/cm 48,221 48,207 46,691 44,380 48,346 48,595 48,639 47,592 47,868 47,916 Turbidity NTU 1 1 4 23 <1 4 1 2 2 1 TSS 8 9 13 11 5 14 9 10 11 10 COD 16 14 18 16 15 16 15 18 16 17 BOD 4 4 4 5 7 7 8 8 7 7 Oil & Grease <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 TOC 0.9 1.0 1.5 1.2 0.7 0.7 1.0 0.9 1.1 1.2 Chlorophyll -A <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 Ammoniacal Nitrogen (NH 3-N) 0.15 0.10 0.33 0.34 0.12 0.09 0.14 0.14 0.47 0.39 Nitrate <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 <0.01 <0.01 <0.01 Phosphate mg/L 0.04 0.03 0.06 0.08 0.02 0.03 0.02 0.05 0.03 0.03 Cadmium (Cd) <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 Chromium (Cr) <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 Arsenic (As*) 0.003 0.001 <0.001 0.002 0.002 0.002 0.001 0.002 0.001 0.002 Environment Existing | 6 Chapter Lead (Pb) <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 Copper (Cu) 0.002 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 0.002 <0.001 Manganese (Mn) 0.007 0.007 0.005 0.017 0.003 0.003 0.017 0.006 0.009 0.007 Report Main 2: Volume Nickel (Ni) 0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 0.001 <0.001 Iron (Fe) 0.08 0.03 0.10 0.25 0.03 0.08 0.17 0.07 0.06 0.08 E. coli cfu/100 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 6-48 Faecal Coliform ml 4,600 62,00 100 2,600 3,400 3,600 600 70 1,000 57,000 Notes: DO: Dissolved Oxygen COD: Chemical Oxygen Demand BOD: Biochemical Oxygen Demand TOC: Total Organic Carbon Environmental Impact Assessment (2 Penan Assessment the for Impact Works Dredging Environmental & Reclamation Proposed 6-49 T6.12 Baseline water quality results (neap tide) (cont’d) WQ9 (Marine) WQ10 (Marine) Parameter Unit Ebbing (10.2 m) Flooding (11.0 m) Ebbing (3.5 m) Flooding (3.6 m) Surface Middle Bottom Surface Middle Bottom Surface Surface pH 8.57 8.55 8.58 8.44 8.54 8.49 8.73 8.53 Temperature oC 29.6 29.6 29.7 29.6 29.7 29.6 30.8 29.6 DO mg/L 5.65 5.61 5.57 5.10 5.22 5.10 6.56 4.58 Salinity ppt 31.22 31.21 31.22 31.22 31.23 31.22 31.44 31.26 Conductivity uS/cm 48,090 48,088 48,110 48,095 48,121 48,100 48,474 48,164 nd nd Turbidity NTU 1 <1 <1 <1 2 2 1 3 Study Schedule) TSS 7 5 7 8 10 9 8 11 COD 20 18 18 12 14 13 16 17 BOD 7 7 7 4 5 4 4 4 Oil & Grease <1 <1 <1 <1 <1 <1 <1 <1 (PSR) Reclamation South g TOC 0.4 0.5 1.0 0.3 0.7 0.3 0.5 0.4 Chlorophyll -A <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 Ammoniacal Nitrogen (NH 3-N) 0.08 0.13 0.14 0.09 0.18 0.09 0.13 0.31 Nitrate <0.01 <0.01 <0.01 0.08 <0.01 <0.01 <0.01 <0.01 Phosphate mg/L 0.01 0.01 0.03 0.03 0.01 0.01 0.02 0.02 Cadmium (Cd) <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 Chromium (Cr) <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 Arsenic (As*) 0.001 0.002 0.002 0.002 0.002 0.002 0.002 0.002 Lead (Pb) <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 Copper (Cu) <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 Manganese (Mn) 0.002 0.003 0.003 <0.001 0.004 0.005 0.003 0.008 Nickel (Ni) <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 Iron (Fe) 0.07 0.07 0.10 0.02 0.11 0.08 0.17 0.17 E.