Environmental and Social Impact Assessment (Draft)
Project Number: 48368 August 2016
MYA: Myingyan Natural Gas Power Project
Prepared by Sembcorp Utilities Pte. Ltd.
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Annex D
Household Survey Questionnaire
Annex E
Air Quality Results Summary Annex E1 - Summary of Predicted Maximum Ground Level Concentrations at ASRs from 2010 to 2014 (Project Only)
Summary of the Predicted Maximum Ground Level Concentrations at ASRs in 2010 (Project only)
Combined Cycle Mode (Main stacks S1 and S3 in operation) Simple Cycle Mode (Bypass stacks S2 and S4 in operation) ASR X Y Description Maximum Ground Level Concentration (µg/m3) Maximum Ground Level Concentration (µg/m3) (a) (a) (b) (c) (c) (c) (c) (a) (a) (b) (c) (c) (c) (c) 1-hr NO2 Annual NO2 10-min SO2 24-hr SO2 24-hr PM10 Annual PM10 24-hr PM2.5 Annual PM2.5 1-hr NO2 Annual NO2 10-min SO2 24-hr SO2 24-hr PM10 Annual PM10 24-hr PM2.5 Annual PM2.5 ASR1 746279.5 2364781.29 Steel Mill Worker Camp 7.571 0.512 0.739 0.085 0.082 0.017 0.082 0.017 2.324 - 0.227 0.024 0.023 - 0.023 - ASR2 745333.4 2364353.17 Monastery and Pagoda 5.706 0.278 0.557 0.045 0.044 0.009 0.044 0.009 1.633 - 0.159 0.016 0.015 - 0.015 - ASR3 747539.2 2365154.24 Hnan Ywa 7.087 0.472 0.692 0.058 0.056 0.016 0.056 0.016 2.621 - 0.256 0.030 0.029 - 0.029 - ASR4 747040.9 2367600.63 Sa Ka Village 7.752 0.774 0.757 0.139 0.135 0.026 0.135 0.026 2.809 - 0.274 0.039 0.038 - 0.038 - ASR5 743821.6 2368914.27 Gyoke Pin 5.306 0.190 0.518 0.035 0.034 0.006 0.034 0.006 1.979 - 0.193 0.016 0.016 - 0.016 - ASR6 741171.8 2368065.66 Hta Naung Taing 7.103 0.121 0.693 0.029 0.029 0.004 0.029 0.004 1.594 - 0.156 0.015 0.014 - 0.014 - ASR7 746154.9 2369881.9 Thein 7.813 0.228 0.762 0.038 0.037 0.008 0.037 0.008 1.889 - 0.184 0.014 0.013 - 0.013 - ASR8 746347.6 2371618.89 Ywar Si (North) 8.289 0.163 0.809 0.035 0.034 0.005 0.034 0.005 1.537 - 0.150 0.012 0.011 - 0.011 - ASR9 748378.3 2371378.65 Ywar Si (South) 5.391 0.206 0.526 0.034 0.033 0.007 0.033 0.007 1.403 - 0.137 0.015 0.014 - 0.014 - ASR10 749757.3 2368956.92 Ku 5.131 0.234 0.501 0.036 0.035 0.008 0.035 0.008 1.917 - 0.187 0.014 0.014 - 0.014 - ASR11 748625 2361995.32 Kan Sint 5.730 0.232 0.559 0.045 0.044 0.008 0.044 0.008 2.133 - 0.208 0.020 0.020 - 0.020 - ASR12 747339.1 2360828.5 Hpa Yar Hla 5.709 0.232 0.557 0.037 0.036 0.008 0.036 0.008 1.911 - 0.186 0.020 0.020 - 0.020 - ASR13 746060.7 2363202.22 Hpet Taw 6.933 0.298 0.677 0.050 0.048 0.010 0.048 0.010 1.930 - 0.188 0.017 0.017 - 0.017 - ASR14 743398.4 2364596.44 Nyaung Kan 6.089 0.162 0.594 0.040 0.039 0.005 0.039 0.005 1.991 - 0.194 0.019 0.018 - 0.018 - ASR15 744751.5 2361090.44 Unknown Village 4.962 0.165 0.484 0.030 0.029 0.005 0.029 0.005 1.543 - 0.151 0.015 0.014 - 0.014 - ASR16 742144.4 2363405.88 Ta Pin Kan Ywar Ma 4.930 0.120 0.481 0.030 0.029 0.004 0.029 0.004 1.491 - 0.145 0.018 0.018 - 0.018 - ASR17 741642.2 2362413.07 Ta Pin Kan (South) 5.111 0.108 0.499 0.024 0.024 0.004 0.024 0.004 1.521 - 0.148 0.016 0.015 - 0.015 - ASR18 746698 2366662 Steel Mill Worker Housing 21.562 1.525 2.104 0.375 0.364 0.050 0.364 0.050 2.697 - 0.263 0.052 0.050 - 0.050 - ASR19 746795 2365139 Government Technical High School 9.137 0.718 0.892 0.100 0.097 0.024 0.097 0.024 2.259 - 0.220 0.043 0.042 - 0.042 - Assessment Criteria (Myanmar NEQ) (d) 200 40 500 20 50 20 25 10 200 40 500 20 50 20 25 10
Maximum % of Project contribution to 10.78% 3.81% 0.42% 1.88% 0.73% 0.25% 1.46% 0.50% 1.40% - 0.05% 0.26% 0.10% - 0.20% - criterion Notes: a) Reference to UK Air Quality Assessment Guidelines - short-term (1-hour) NO2 = 50% of NOx; long-term (annual) NO2 = 100% of NOx b) A general factor of 1.43 is used to convert hourly SO2 model results to 10-min averaged results c) For conservative approach, emissions of PM10 and PM2.5 are assumed to be the same. Therefore, modelling results of PM10 and PM2.5 are identical. Summary of the Predicted Maximum Ground Level Concentrations at ASRs in 2011 (Project only)
Combined Cycle Mode (Main stacks S1 and S3 in operation) Simple Cycle Mode (Bypass stacks S2 and S4 in operation) ASR X Y Description Maximum Ground Level Concentration (µg/m3) Maximum Ground Level Concentration (µg/m3) (a) (a) (b) (c) (c) (c) (c) (a) (a) (b) (c) (c) (c) (c) 1-hr NO2 Annual NO2 10-min SO2 24-hr SO2 24-hr PM10 Annual PM10 24-hr PM2.5 Annual PM2.5 1-hr NO2 Annual NO2 10-min SO2 24-hr SO2 24-hr PM10 Annual PM10 24-hr PM2.5 Annual PM2.5 ASR1 746279.5 2364781.29 Steel Mill Worker Camp 6.800 0.538 0.664 0.068 0.066 0.018 0.066 0.018 2.245 - 0.219 0.022 0.021 - 0.021 - ASR2 745333.4 2364353.17 Monastery and Pagoda 7.745 0.278 0.756 0.055 0.053 0.009 0.053 0.009 1.798 - 0.175 0.022 0.021 - 0.021 - ASR3 747539.2 2365154.24 Hnan Ywa 10.651 0.543 1.039 0.089 0.086 0.018 0.086 0.018 2.604 - 0.254 0.025 0.024 - 0.024 - ASR4 747040.9 2367600.63 Sa Ka Village 7.686 0.671 0.750 0.200 0.194 0.022 0.194 0.022 2.884 - 0.281 0.052 0.050 - 0.050 - ASR5 743821.6 2368914.27 Gyoke Pin 6.754 0.194 0.659 0.039 0.038 0.006 0.038 0.006 1.541 - 0.150 0.017 0.017 - 0.017 - ASR6 741171.8 2368065.66 Hta Naung Taing 6.356 0.119 0.620 0.031 0.030 0.004 0.030 0.004 1.581 - 0.154 0.017 0.016 - 0.016 - ASR7 746154.9 2369881.9 Thein 5.590 0.267 0.546 0.058 0.056 0.009 0.056 0.009 2.231 - 0.218 0.021 0.021 - 0.021 - ASR8 746347.6 2371618.89 Ywar Si (North) 5.239 0.186 0.511 0.042 0.041 0.006 0.041 0.006 1.626 - 0.159 0.020 0.020 - 0.020 - ASR9 748378.3 2371378.65 Ywar Si (South) 7.770 0.193 0.758 0.041 0.039 0.006 0.039 0.006 1.991 - 0.194 0.015 0.014 - 0.014 - ASR10 749757.3 2368956.92 Ku 7.146 0.214 0.697 0.037 0.036 0.007 0.036 0.007 1.763 - 0.172 0.015 0.014 - 0.014 - ASR11 748625 2361995.32 Kan Sint 5.716 0.273 0.558 0.044 0.042 0.009 0.042 0.009 2.598 - 0.254 0.025 0.024 - 0.024 - ASR12 747339.1 2360828.5 Hpa Yar Hla 6.231 0.252 0.608 0.045 0.044 0.008 0.044 0.008 2.185 - 0.213 0.025 0.025 - 0.025 - ASR13 746060.7 2363202.22 Hpet Taw 6.169 0.312 0.602 0.045 0.044 0.010 0.044 0.010 2.825 - 0.276 0.020 0.019 - 0.019 - ASR14 743398.4 2364596.44 Nyaung Kan 5.250 0.161 0.512 0.027 0.026 0.005 0.026 0.005 1.914 - 0.187 0.014 0.014 - 0.014 - ASR15 744751.5 2361090.44 Unknown Village 4.579 0.164 0.447 0.032 0.031 0.005 0.031 0.005 1.985 - 0.194 0.018 0.018 - 0.018 - ASR16 742144.4 2363405.88 Ta Pin Kan Ywar Ma 4.401 0.119 0.429 0.022 0.022 0.004 0.022 0.004 1.570 - 0.153 0.012 0.011 - 0.011 - ASR17 741642.2 2362413.07 Ta Pin Kan (South) 4.771 0.106 0.466 0.029 0.028 0.004 0.028 0.004 1.406 - 0.137 0.013 0.013 - 0.013 - ASR18 746698 2366662 Steel Mill Worker Housing 21.359 1.525 2.084 0.322 0.313 0.050 0.313 0.050 2.808 - 0.274 0.041 0.040 - 0.040 - ASR19 746795 2365139 Government Technical High School 10.509 0.785 1.026 0.108 0.104 0.026 0.104 0.026 2.401 - 0.234 0.045 0.044 - 0.044 - Assessment Criteria (Myanmar NEQ) (d) 200 40 500 20 50 20 25 10 200 40 500 20 50 20 25 10 Maximum % of Project contribution to 10.68% 3.81% 0.42% 1.61% 0.63% 0.25% 1.25% 0.50% 1.44% - 0.06% 0.26% 0.10% - 0.20% - criterion Notes: a) Reference to UK Air Quality Assessment Guidelines - short-term (1-hour) NO2 = 50% of NOx; long-term (annual) NO2 = 100% of NOx b) A general factor of 1.43 is used to convert hourly SO2 model results to 10-min averaged results c) For conservative approach, emissions of PM10 and PM2.5 are assumed to be the same. Therefore, modelling results of PM10 and PM2.5 are identical. Summary of the Predicted Maximum Ground Level Concentrations at ASRs in 2012 (Project only)
Combined Cycle Mode (Main stacks S1 and S3 in operation) Simple Cycle Mode (Bypass stacks S2 and S4 in operation) ASR X Y Description Maximum Ground Level Concentration (µg/m3) Maximum Ground Level Concentration (µg/m3) (a) (a) (b) (c) (c) (c) (c) (a) (a) (b) (c) (c) (c) (c) 1-hr NO2 Annual NO2 10-min SO2 24-hr SO2 24-hr PM10 Annual PM10 24-hr PM2.5 Annual PM2.5 1-hr NO2 Annual NO2 10-min SO2 24-hr SO2 24-hr PM10 Annual PM10 24-hr PM2.5 Annual PM2.5 ASR1 746279.5 2364781.29 Steel Mill Worker Camp 6.476 0.436 0.632 0.062 0.060 0.014 0.060 0.014 2.177 - 0.212 0.028 0.027 - 0.027 - ASR2 745333.4 2364353.17 Monastery and Pagoda 5.798 0.235 0.566 0.049 0.048 0.008 0.048 0.008 2.326 - 0.227 0.021 0.020 - 0.020 - ASR3 747539.2 2365154.24 Hnan Ywa 9.499 0.414 0.927 0.065 0.063 0.014 0.063 0.014 3.056 - 0.298 0.026 0.025 - 0.025 - ASR4 747040.9 2367600.63 Sa Ka Village 7.715 0.839 0.753 0.175 0.170 0.028 0.170 0.028 2.874 - 0.280 0.039 0.038 - 0.038 - ASR5 743821.6 2368914.27 Gyoke Pin 4.290 0.170 0.419 0.040 0.039 0.006 0.039 0.006 1.530 - 0.149 0.012 0.012 - 0.012 - ASR6 741171.8 2368065.66 Hta Naung Taing 4.342 0.102 0.424 0.032 0.031 0.003 0.031 0.003 1.619 - 0.158 0.018 0.018 - 0.018 - ASR7 746154.9 2369881.9 Thein 6.478 0.262 0.632 0.063 0.061 0.009 0.061 0.009 1.906 - 0.186 0.015 0.015 - 0.015 - ASR8 746347.6 2371618.89 Ywar Si (North) 5.572 0.199 0.544 0.039 0.038 0.007 0.038 0.007 1.515 - 0.148 0.013 0.013 - 0.013 - ASR9 748378.3 2371378.65 Ywar Si (South) 4.803 0.248 0.469 0.034 0.033 0.008 0.033 0.008 1.807 - 0.176 0.017 0.016 - 0.016 - ASR10 749757.3 2368956.92 Ku 6.623 0.252 0.646 0.040 0.038 0.008 0.038 0.008 1.807 - 0.176 0.018 0.017 - 0.017 - ASR11 748625 2361995.32 Kan Sint 7.216 0.214 0.704 0.045 0.044 0.007 0.044 0.007 2.127 - 0.208 0.023 0.022 - 0.022 - ASR12 747339.1 2360828.5 Hpa Yar Hla 5.785 0.211 0.565 0.036 0.035 0.007 0.035 0.007 1.773 - 0.173 0.018 0.018 - 0.018 - ASR13 746060.7 2363202.22 Hpet Taw 6.753 0.261 0.659 0.043 0.042 0.009 0.042 0.009 1.944 - 0.190 0.016 0.016 - 0.016 - ASR14 743398.4 2364596.44 Nyaung Kan 7.503 0.135 0.732 0.058 0.056 0.004 0.056 0.004 1.746 - 0.170 0.015 0.015 - 0.015 - ASR15 744751.5 2361090.44 Unknown Village 6.032 0.143 0.589 0.033 0.032 0.005 0.032 0.005 1.754 - 0.171 0.015 0.014 - 0.014 - ASR16 742144.4 2363405.88 Ta Pin Kan Ywar Ma 6.789 0.099 0.663 0.051 0.049 0.003 0.049 0.003 1.407 - 0.137 0.016 0.015 - 0.015 - ASR17 741642.2 2362413.07 Ta Pin Kan (South) 6.254 0.089 0.610 0.047 0.045 0.003 0.045 0.003 1.587 - 0.155 0.018 0.018 - 0.018 - ASR18 746698 2366662 Steel Mill Worker Housing 21.946 1.455 2.142 0.322 0.312 0.048 0.312 0.048 2.986 - 0.291 0.044 0.042 - 0.042 - ASR19 746795 2365139 Government Technical High School 7.439 0.628 0.726 0.114 0.111 0.021 0.111 0.021 2.870 - 0.280 0.040 0.039 - 0.039 - Assessment Criteria (Myanmar NEQ) (d) 200 40 500 20 50 20 25 10 200 40 500 20 50 20 25 10 Maximum % of Project contribution to 10.97% 3.64% 0.43% 1.61% 0.62% 0.24% 1.25% 0.48% 1.53% - 0.06% 0.22% 0.08% - 0.17% - criterion Notes: a) Reference to UK Air Quality Assessment Guidelines - short-term (1-hour) NO2 = 50% of NOx; long-term (annual) NO2 = 100% of NOx b) A general factor of 1.43 is used to convert hourly SO2 model results to 10-min averaged results c) For conservative approach, emissions of PM10 and PM2.5 are assumed to be the same. Therefore, modelling results of PM10 and PM2.5 are identical. Summary of the Predicted Maximum Ground Level Concentrations at ASRs in 2013 (Project only)
Combined Cycle Mode (Main stacks S1 and S3 in operation) Simple Cycle Mode (Bypass stacks S2 and S4 in operation) ASR X Y Description Maximum Ground Level Concentration (µg/m3) Maximum Ground Level Concentration (µg/m3) (a) (a) (b) (c) (c) (c) (c) (a) (a) (b) (c) (c) (c) (c) 1-hr NO2 Annual NO2 10-min SO2 24-hr SO2 24-hr PM10 Annual PM10 24-hr PM2.5 Annual PM2.5 1-hr NO2 Annual NO2 10-min SO2 24-hr SO2 24-hr PM10 Annual PM10 24-hr PM2.5 Annual PM2.5 ASR1 746279.5 2364781.29 Steel Mill Worker Camp 8.800 0.346 0.859 0.056 0.054 0.011 0.054 0.011 2.014 - 0.197 0.024 0.023 - 0.023 - ASR2 745333.4 2364353.17 Monastery and Pagoda 7.930 0.216 0.774 0.040 0.039 0.007 0.039 0.007 1.909 - 0.186 0.017 0.016 - 0.016 - ASR3 747539.2 2365154.24 Hnan Ywa 9.080 0.366 0.886 0.059 0.057 0.012 0.057 0.012 2.703 - 0.264 0.024 0.023 - 0.023 - ASR4 747040.9 2367600.63 Sa Ka Village 7.733 1.064 0.755 0.184 0.179 0.035 0.179 0.035 3.112 - 0.304 0.038 0.036 - 0.036 - ASR5 743821.6 2368914.27 Gyoke Pin 4.487 0.177 0.438 0.034 0.033 0.006 0.033 0.006 2.038 - 0.199 0.013 0.013 - 0.013 - ASR6 741171.8 2368065.66 Hta Naung Taing 4.878 0.102 0.476 0.028 0.027 0.003 0.027 0.003 1.502 - 0.147 0.011 0.011 - 0.011 - ASR7 746154.9 2369881.9 Thein 3.959 0.305 0.386 0.051 0.050 0.010 0.050 0.010 1.880 - 0.183 0.016 0.015 - 0.015 - ASR8 746347.6 2371618.89 Ywar Si (North) 4.081 0.230 0.398 0.037 0.036 0.008 0.036 0.008 1.770 - 0.173 0.014 0.014 - 0.014 - ASR9 748378.3 2371378.65 Ywar Si (South) 5.094 0.299 0.497 0.049 0.047 0.010 0.047 0.010 1.924 - 0.188 0.015 0.014 - 0.014 - ASR10 749757.3 2368956.92 Ku 5.722 0.255 0.558 0.040 0.039 0.008 0.039 0.008 2.144 - 0.209 0.016 0.016 - 0.016 - ASR11 748625 2361995.32 Kan Sint 6.617 0.178 0.646 0.033 0.032 0.006 0.032 0.006 2.331 - 0.228 0.016 0.015 - 0.015 - ASR12 747339.1 2360828.5 Hpa Yar Hla 5.277 0.158 0.515 0.035 0.034 0.005 0.034 0.005 2.032 - 0.198 0.020 0.019 - 0.019 - ASR13 746060.7 2363202.22 Hpet Taw 5.913 0.207 0.577 0.036 0.035 0.007 0.035 0.007 2.004 - 0.196 0.019 0.018 - 0.018 - ASR14 743398.4 2364596.44 Nyaung Kan 6.104 0.137 0.596 0.043 0.042 0.005 0.042 0.005 1.878 - 0.183 0.016 0.016 - 0.016 - ASR15 744751.5 2361090.44 Unknown Village 7.718 0.123 0.753 0.033 0.032 0.004 0.032 0.004 1.888 - 0.184 0.014 0.014 - 0.014 - ASR16 742144.4 2363405.88 Ta Pin Kan Ywar Ma 6.634 0.102 0.647 0.039 0.038 0.003 0.038 0.003 1.807 - 0.176 0.014 0.014 - 0.014 - ASR17 741642.2 2362413.07 Ta Pin Kan (South) 6.475 0.091 0.632 0.038 0.037 0.003 0.037 0.003 1.701 - 0.166 0.013 0.013 - 0.013 - ASR18 746698 2366662 Steel Mill Worker Housing 22.135 1.328 2.160 0.311 0.302 0.044 0.302 0.044 2.768 - 0.270 0.042 0.041 - 0.041 - ASR19 746795 2365139 Government Technical High School 8.493 0.466 0.829 0.109 0.106 0.015 0.106 0.015 2.561 - 0.250 0.033 0.032 - 0.032 - Assessment Criteria (Myanmar NEQ) (d) 200 40 500 20 50 20 25 10 200 40 500 20 50 20 25 10
Maximum % of Project contribution to 11.07% 3.32% 0.43% 1.55% 0.60% 0.22% 1.21% 0.44% 1.56% - 0.06% 0.21% 0.08% - 0.16% - criterion Notes: a) Reference to UK Air Quality Assessment Guidelines - short-term (1-hour) NO2 = 50% of NOx; long-term (annual) NO2 = 100% of NOx b) A general factor of 1.43 is used to convert hourly SO2 model results to 10-min averaged results c) For conservative approach, emissions of PM10 and PM2.5 are assumed to be the same. Therefore, modelling results of PM10 and PM2.5 are identical. Summary of the Predicted Maximum Ground Level Concentrations at ASRs in 2014 (Project only)
Combined Cycle Mode (Main stacks S1 and S3 in operation) Simple Cycle Mode (Bypass stacks S2 and S4 in operation) ASR X Y Description Maximum Ground Level Concentration (µg/m3) Maximum Ground Level Concentration (µg/m3) (a) (a) (b) (c) (c) (c) (c) (a) (a) (b) (c) (c) (c) (c) 1-hr NO2 Annual NO2 10-min SO2 24-hr SO2 24-hr PM10 Annual PM10 24-hr PM2.5 Annual PM2.5 1-hr NO2 Annual NO2 10-min SO2 24-hr SO2 24-hr PM10 Annual PM10 24-hr PM2.5 Annual PM2.5 ASR1 746279.5 2364781.29 Steel Mill Worker Camp 7.906 0.477 0.772 0.076 0.074 0.016 0.074 0.016 1.808 - 0.176 0.023 0.022 - 0.022 - ASR2 745333.4 2364353.17 Monastery and Pagoda 7.919 0.254 0.773 0.062 0.060 0.008 0.060 0.008 2.047 - 0.200 0.020 0.019 - 0.019 - ASR3 747539.2 2365154.24 Hnan Ywa 10.248 0.477 1.000 0.068 0.066 0.016 0.066 0.016 2.951 - 0.288 0.027 0.026 - 0.026 - ASR4 747040.9 2367600.63 Sa Ka Village 10.097 0.868 0.985 0.176 0.171 0.029 0.171 0.029 2.930 - 0.286 0.041 0.040 - 0.040 - ASR5 743821.6 2368914.27 Gyoke Pin 5.642 0.185 0.551 0.038 0.037 0.006 0.037 0.006 1.747 - 0.170 0.016 0.016 - 0.016 - ASR6 741171.8 2368065.66 Hta Naung Taing 5.300 0.111 0.517 0.024 0.023 0.004 0.023 0.004 1.204 - 0.118 0.015 0.015 - 0.015 - ASR7 746154.9 2369881.9 Thein 6.165 0.303 0.602 0.054 0.053 0.010 0.053 0.010 2.108 - 0.206 0.017 0.016 - 0.016 - ASR8 746347.6 2371618.89 Ywar Si (North) 6.206 0.221 0.606 0.036 0.035 0.007 0.035 0.007 1.757 - 0.172 0.017 0.017 - 0.017 - ASR9 748378.3 2371378.65 Ywar Si (South) 5.076 0.231 0.495 0.032 0.031 0.008 0.031 0.008 1.657 - 0.162 0.012 0.012 - 0.012 - ASR10 749757.3 2368956.92 Ku 5.863 0.252 0.572 0.034 0.033 0.008 0.033 0.008 1.781 - 0.174 0.014 0.014 - 0.014 - ASR11 748625 2361995.32 Kan Sint 6.272 0.256 0.612 0.052 0.051 0.008 0.051 0.008 2.041 - 0.199 0.022 0.021 - 0.021 - ASR12 747339.1 2360828.5 Hpa Yar Hla 6.216 0.238 0.607 0.042 0.041 0.008 0.041 0.008 1.843 - 0.180 0.020 0.020 - 0.020 - ASR13 746060.7 2363202.22 Hpet Taw 6.892 0.288 0.673 0.060 0.059 0.010 0.059 0.010 1.984 - 0.194 0.022 0.021 - 0.021 - ASR14 743398.4 2364596.44 Nyaung Kan 5.560 0.149 0.543 0.027 0.026 0.005 0.026 0.005 1.186 - 0.116 0.013 0.013 - 0.013 - ASR15 744751.5 2361090.44 Unknown Village 5.734 0.156 0.560 0.038 0.037 0.005 0.037 0.005 1.863 - 0.182 0.018 0.017 - 0.017 - ASR16 742144.4 2363405.88 Ta Pin Kan Ywar Ma 6.361 0.110 0.621 0.027 0.026 0.004 0.026 0.004 1.162 - 0.113 0.009 0.009 - 0.009 - ASR17 741642.2 2362413.07 Ta Pin Kan (South) 6.036 0.097 0.589 0.025 0.025 0.003 0.025 0.003 1.166 - 0.114 0.008 0.008 - 0.008 - ASR18 746698 2366662 Steel Mill Worker Housing 21.650 1.738 2.113 0.279 0.271 0.058 0.271 0.058 2.759 - 0.269 0.036 0.035 - 0.035 - ASR19 746795 2365139 Government Technical High School 8.771 0.678 0.856 0.117 0.113 0.022 0.113 0.022 2.448 - 0.239 0.028 0.027 - 0.027 - Assessment Criteria (Myanmar NEQ) (d) 200 40 500 20 50 20 25 10 200 40 500 20 50 20 25 10
Maximum % of Project contribution to 10.83% 4.35% 0.42% 1.39% 0.54% 0.29% 1.08% 0.58% 1.48% - 0.06% 0.21% 0.08% - 0.16% - criterion Notes: a) Reference to UK Air Quality Assessment Guidelines - short-term (1-hour) NO2 = 50% of NOx; long-term (annual) NO2 = 100% of NOx b) A general factor of 1.43 is used to convert hourly SO2 model results to 10-min averaged results c) For conservative approach, emissions of PM10 and PM2.5 are assumed to be the same. Therefore, modelling results of PM10 and PM2.5 are identical. Annex E2 - Summary of Cumulative Maximum Ground Level Concentrations at ASRs from 2010 to 2014 (Project Contribution and Background)
Summary of Cumulative Maximum Ground Level Concentrations at ASRs in 2010 (Project Contribution and Background)
Combined Cycle Mode (Main stacks S1 and S3 in operation) Simple Cycle Mode (Bypass stacks S2 and S4 in operation) ASR X Y Description Maximum Ground Level Concentration (µg/m3) Maximum Ground Level Concentration (µg/m3) (a) (a) (b) (c) (c) (c) (c) (a) (a) (b) (c) (c) (c) (c) 1-hr NO2 Annual NO2 10-min SO2 24-hr SO2 24-hr PM10 Annual PM10 24-hr PM2.5 Annual PM2.5 1-hr NO2 Annual NO2 10-min SO2 24-hr SO2 24-hr PM10 Annual PM10 24-hr PM2.5 Annual PM2.5 Background Concentration (e) 54.0 54.0 6.2 6.2 43.3 43.3 26.7 26.7 54.0 54.0 6.2 6.2 43.3 43.3 26.7 26.7 ASR1 746280 2364781 Steel Mill Worker Camp 61.5 54.5 6.9 6.2 43.4 43.3 26.8 26.7 56.3 - 6.4 6.2 43.3 - 26.7 - ASR2 745333 2364353 Monastery and Pagoda 59.7 54.2 6.7 6.2 43.4 43.3 26.7 26.7 55.6 - 6.3 6.2 43.3 - 26.7 - ASR3 747539 2365154 Hnan Ywa 61.1 54.4 6.8 6.2 43.4 43.3 26.7 26.7 56.6 - 6.4 6.2 43.3 - 26.7 - ASR4 747041 2367601 Sa Ka Village 61.7 54.7 6.9 6.3 43.4 43.3 26.8 26.7 56.8 - 6.4 6.2 43.3 - 26.7 - ASR5 743822 2368914 Gyoke Pin 59.3 54.2 6.7 6.2 43.3 43.3 26.7 26.7 55.9 - 6.3 6.2 43.3 - 26.7 - ASR6 741172 2368066 Hta Naung Taing 61.1 54.1 6.8 6.2 43.3 43.3 26.7 26.7 55.6 - 6.3 6.2 43.3 - 26.7 - ASR7 746155 2369882 Thein 61.8 54.2 6.9 6.2 43.3 43.3 26.7 26.7 55.9 - 6.3 6.2 43.3 - 26.7 - ASR8 746348 2371619 Ywar Si (North) 62.3 54.1 7.0 6.2 43.3 43.3 26.7 26.7 55.5 - 6.3 6.2 43.3 - 26.7 - ASR9 748378 2371379 Ywar Si (South) 59.4 54.2 6.7 6.2 43.3 43.3 26.7 26.7 55.4 - 6.3 6.2 43.3 - 26.7 - ASR10 749757 2368957 Ku 59.1 54.2 6.7 6.2 43.3 43.3 26.7 26.7 55.9 - 6.3 6.2 43.3 - 26.7 - ASR11 748625 2361995 Kan Sint 59.7 54.2 6.7 6.2 43.4 43.3 26.7 26.7 56.1 - 6.4 6.2 43.3 - 26.7 - ASR12 747339 2360829 Hpa Yar Hla 59.7 54.2 6.7 6.2 43.3 43.3 26.7 26.7 55.9 - 6.3 6.2 43.3 - 26.7 - ASR13 746061 2363202 Hpet Taw 60.9 54.3 6.8 6.2 43.4 43.3 26.7 26.7 55.9 - 6.3 6.2 43.3 - 26.7 - ASR14 743398 2364596 Nyaung Kan 60.1 54.1 6.7 6.2 43.3 43.3 26.7 26.7 56.0 - 6.3 6.2 43.3 - 26.7 - ASR15 744752 2361090 Unknown Village 58.9 54.1 6.6 6.2 43.3 43.3 26.7 26.7 55.5 - 6.3 6.2 43.3 - 26.7 - ASR16 742144 2363406 Ta Pin Kan Ywar Ma 58.9 54.1 6.6 6.2 43.3 43.3 26.7 26.7 55.5 - 6.3 6.2 43.3 - 26.7 - ASR17 741642 2362413 Ta Pin Kan (South) 59.1 54.1 6.6 6.2 43.3 43.3 26.7 26.7 55.5 - 6.3 6.2 43.3 - 26.7 - ASR18 746698 2366662 Steel Mill Worker Housing 75.5 55.5 8.3 6.5 43.7 43.4 27.0 26.7 56.7 - 6.4 6.2 43.4 - 26.7 - ASR19 746795 2365139 Government Technical High School 63.1 54.7 7.0 6.3 43.4 43.3 26.8 26.7 56.2 - 6.4 6.2 43.4 - 26.7 -
Assessment Criteria (Myanmar NEQ) (d) 200 40 500 20 50 20 25 10 200 40 500 20 50 20 25 10
Maximum % of Cumulative Impact to 38% 139% 2% 33% 87% 217% 108% 267% 28% - 1% 31% 87% - 107% - criterion Notes: a) Reference to UK Air Quality Assessment Guidelines - short-term (1-hour) NO2 = 50% of NOx; long-term (annual) NO2 = 100% of NOx b) A general factor of 1.43 is used to convert hourly SO2 model results to 10-min averaged results c) For conservative approach, emissions of PM10 and PM2.5 are assumed to be the same. Therefore, modelling results of PM10 and PM2.5 are identical. d) Averaged background pollutant concentrations have been included. e) Exceedance of air quality standard for cumulative annual NO2 at ASRs due to high background NO2 concentrations in the Project site area. f) Exceedance of air quality standard for cumulative annual PM10 at ASRs due to high background PM10 concentrations in the Project site area. g) Exceedance of air quality standard for cumulative 24-hour PM2.5 at ASRs due to high background PM2.5 concentrations in the Project site area. h) Exceedance of air quality standard for cumulative annual PM2.5 at ASRs due to high background PM2.5 concentrations in the Project site area. Summary of Cumulative Maximum Ground Level Concentrations at ASRs in 2011 (Project Contribution and Background)
Combined Cycle Mode (Main stacks S1 and S3 in operation) Simple Cycle Mode (Bypass stacks S2 and S4 in operation) ASR X Y Description Maximum Ground Level Concentration (µg/m3) Maximum Ground Level Concentration (µg/m3) (a) (a) (b) (c) (c) (c) (c) (a) (a) (b) (c) (c) (c) (c) 1-hr NO2 Annual NO2 10-min SO2 24-hr SO2 24-hr PM10 Annual PM10 24-hr PM2.5 Annual PM2.5 1-hr NO2 Annual NO2 10-min SO2 24-hr SO2 24-hr PM10 Annual PM10 24-hr PM2.5 Annual PM2.5 Background Concentration (e) 54.0 54.0 6.2 6.2 43.3 43.3 26.7 26.7 54.0 54.0 6.2 6.2 43.3 43.3 26.7 26.7 ASR1 746280 2364781 Steel Mill Worker Camp 60.8 54.5 6.8 6.2 43.4 43.3 26.7 26.7 56.2 - 6.4 6.2 43.3 - 26.7 - ASR2 745333 2364353 Monastery and Pagoda 61.7 54.2 6.9 6.2 43.4 43.3 26.7 26.7 55.8 - 6.3 6.2 43.3 - 26.7 - ASR3 747539 2365154 Hnan Ywa 64.6 54.5 7.2 6.2 43.4 43.3 26.8 26.7 56.6 - 6.4 6.2 43.3 - 26.7 - ASR4 747041 2367601 Sa Ka Village 61.7 54.6 6.9 6.3 43.5 43.3 26.9 26.7 56.9 - 6.4 6.2 43.4 - 26.7 - ASR5 743822 2368914 Gyoke Pin 60.7 54.2 6.8 6.2 43.3 43.3 26.7 26.7 55.5 - 6.3 6.2 43.3 - 26.7 - ASR6 741172 2368066 Hta Naung Taing 60.3 54.1 6.8 6.2 43.3 43.3 26.7 26.7 55.6 - 6.3 6.2 43.3 - 26.7 - ASR7 746155 2369882 Thein 59.6 54.2 6.7 6.2 43.4 43.3 26.7 26.7 56.2 - 6.4 6.2 43.3 - 26.7 - ASR8 746348 2371619 Ywar Si (North) 59.2 54.2 6.7 6.2 43.4 43.3 26.7 26.7 55.6 - 6.3 6.2 43.3 - 26.7 - ASR9 748378 2371379 Ywar Si (South) 61.7 54.2 6.9 6.2 43.3 43.3 26.7 26.7 56.0 - 6.3 6.2 43.3 - 26.7 - ASR10 749757 2368957 Ku 61.1 54.2 6.8 6.2 43.3 43.3 26.7 26.7 55.7 - 6.3 6.2 43.3 - 26.7 - ASR11 748625 2361995 Kan Sint 59.7 54.2 6.7 6.2 43.4 43.3 26.7 26.7 56.6 - 6.4 6.2 43.3 - 26.7 - ASR12 747339 2360829 Hpa Yar Hla 60.2 54.2 6.8 6.2 43.4 43.3 26.7 26.7 56.2 - 6.4 6.2 43.3 - 26.7 - ASR13 746061 2363202 Hpet Taw 60.1 54.3 6.8 6.2 43.4 43.3 26.7 26.7 56.8 - 6.4 6.2 43.3 - 26.7 - ASR14 743398 2364596 Nyaung Kan 59.2 54.1 6.7 6.2 43.3 43.3 26.7 26.7 55.9 - 6.3 6.2 43.3 - 26.7 - ASR15 744752 2361090 Unknown Village 58.5 54.1 6.6 6.2 43.3 43.3 26.7 26.7 56.0 - 6.3 6.2 43.3 - 26.7 - ASR16 742144 2363406 Ta Pin Kan Ywar Ma 58.4 54.1 6.6 6.2 43.3 43.3 26.7 26.7 55.5 - 6.3 6.2 43.3 - 26.7 - ASR17 741642 2362413 Ta Pin Kan (South) 58.7 54.1 6.6 6.2 43.3 43.3 26.7 26.7 55.4 - 6.3 6.2 43.3 - 26.7 - ASR18 746698 2366662 Steel Mill Worker Housing 75.3 55.5 8.2 6.5 43.6 43.4 27.0 26.7 56.8 - 6.4 6.2 43.3 - 26.7 - ASR19 746795 2365139 Government Technical High School 64.5 54.8 7.2 6.3 43.4 43.3 26.8 26.7 56.4 - 6.4 6.2 43.4 - 26.7 - Assessment Criteria (Myanmar NEQ) (d) 200 40 500 20 50 20 25 10 200 40 500 20 50 20 25 10
Maximum % of Cumulative Impact to 38% 139% 2% 32% 87% 217% 108% 267% 28% - 1% 31% 87% - 107% - criterion Notes: a) Reference to UK Air Quality Assessment Guidelines - short-term (1-hour) NO2 = 50% of NOx; long-term (annual) NO2 = 100% of NOx b) A general factor of 1.43 is used to convert hourly SO2 model results to 10-min averaged results c) For conservative approach, emissions of PM10 and PM2.5 are assumed to be the same. Therefore, modelling results of PM10 and PM2.5 are identical. d) Averaged background pollutant concentrations have been included. e) Exceedance of air quality standard for cumulative annual NO2 at ASRs due to high background NO2 concentrations in the Project site area. f) Exceedance of air quality standard for cumulative annual PM10 at ASRs due to high background PM10 concentrations in the Project site area. g) Exceedance of air quality standard for cumulative 24-hour PM2.5 at ASRs due to high background PM2.5 concentrations in the Project site area. h) Exceedance of air quality standard for cumulative annual PM2.5 at ASRs due to high background PM2.5 concentrations in the Project site area. Summary of Cumulative Maximum Ground Level Concentrations at ASRs in 2012 (Project Contribution and Background)
Combined Cycle Mode (Main stacks S1 and S3 in operation) Simple Cycle Mode (Bypass stacks S2 and S4 in operation) ASR X Y Description Maximum Ground Level Concentration (µg/m3) Maximum Ground Level Concentration (µg/m3) (a) (a) (b) (c) (c) (c) (c) (a) (a) (b) (c) (c) (c) (c) 1-hr NO2 Annual NO2 10-min SO2 24-hr SO2 24-hr PM10 Annual PM10 24-hr PM2.5 Annual PM2.5 1-hr NO2 Annual NO2 10-min SO2 24-hr SO2 24-hr PM10 Annual PM10 24-hr PM2.5 Annual PM2.5 Background Concentration (e) 54.0 54.0 6.2 6.2 43.3 43.3 26.7 26.7 54.0 54.0 6.2 6.2 43.3 43.3 26.7 26.7 ASR1 746280 2364781 Steel Mill Worker Camp 60.4 54.4 6.8 6.2 43.4 43.3 26.7 26.7 56.1 - 6.4 6.2 43.3 - 26.7 - ASR2 745333 2364353 Monastery and Pagoda 59.8 54.2 6.7 6.2 43.4 43.3 26.7 26.7 56.3 - 6.4 6.2 43.3 - 26.7 - ASR3 747539 2365154 Hnan Ywa 63.5 54.4 7.1 6.2 43.4 43.3 26.7 26.7 57.0 - 6.4 6.2 43.3 - 26.7 - ASR4 747041 2367601 Sa Ka Village 61.7 54.8 6.9 6.3 43.5 43.3 26.8 26.7 56.8 - 6.4 6.2 43.3 - 26.7 - ASR5 743822 2368914 Gyoke Pin 58.3 54.1 6.6 6.2 43.3 43.3 26.7 26.7 55.5 - 6.3 6.2 43.3 - 26.7 - ASR6 741172 2368066 Hta Naung Taing 58.3 54.1 6.6 6.2 43.3 43.3 26.7 26.7 55.6 - 6.3 6.2 43.3 - 26.7 - ASR7 746155 2369882 Thein 60.4 54.2 6.8 6.2 43.4 43.3 26.7 26.7 55.9 - 6.3 6.2 43.3 - 26.7 - ASR8 746348 2371619 Ywar Si (North) 59.5 54.2 6.7 6.2 43.3 43.3 26.7 26.7 55.5 - 6.3 6.2 43.3 - 26.7 - ASR9 748378 2371379 Ywar Si (South) 58.8 54.2 6.6 6.2 43.3 43.3 26.7 26.7 55.8 - 6.3 6.2 43.3 - 26.7 - ASR10 749757 2368957 Ku 60.6 54.2 6.8 6.2 43.3 43.3 26.7 26.7 55.8 - 6.3 6.2 43.3 - 26.7 - ASR11 748625 2361995 Kan Sint 61.2 54.2 6.9 6.2 43.4 43.3 26.7 26.7 56.1 - 6.4 6.2 43.3 - 26.7 - ASR12 747339 2360829 Hpa Yar Hla 59.8 54.2 6.7 6.2 43.3 43.3 26.7 26.7 55.7 - 6.3 6.2 43.3 - 26.7 - ASR13 746061 2363202 Hpet Taw 60.7 54.2 6.8 6.2 43.4 43.3 26.7 26.7 55.9 - 6.3 6.2 43.3 - 26.7 - ASR14 743398 2364596 Nyaung Kan 61.5 54.1 6.9 6.2 43.4 43.3 26.7 26.7 55.7 - 6.3 6.2 43.3 - 26.7 - ASR15 744752 2361090 Unknown Village 60.0 54.1 6.7 6.2 43.3 43.3 26.7 26.7 55.7 - 6.3 6.2 43.3 - 26.7 - ASR16 742144 2363406 Ta Pin Kan Ywar Ma 60.8 54.1 6.8 6.2 43.4 43.3 26.7 26.7 55.4 - 6.3 6.2 43.3 - 26.7 - ASR17 741642 2362413 Ta Pin Kan (South) 60.2 54.1 6.8 6.2 43.4 43.3 26.7 26.7 55.6 - 6.3 6.2 43.3 - 26.7 - ASR18 746698 2366662 Steel Mill Worker Housing 75.9 55.4 8.3 6.5 43.6 43.4 27.0 26.7 57.0 - 6.4 6.2 43.4 - 26.7 - ASR19 746795 2365139 Government Technical High School 61.4 54.6 6.9 6.3 43.4 43.3 26.8 26.7 56.8 - 6.4 6.2 43.3 - 26.7 - Assessment Criteria (Myanmar NEQ) (d) 200 40 500 20 50 20 25 10 200 40 500 20 50 20 25 10
Maximum % of Cumulative Impact to 38% 139% 2% 32% 87% 217% 108% 267% 29% - 1% 31% 87% - 107% - criterion Notes: a) Reference to UK Air Quality Assessment Guidelines - short-term (1-hour) NO2 = 50% of NOx; long-term (annual) NO2 = 100% of NOx b) A general factor of 1.43 is used to convert hourly SO2 model results to 10-min averaged results c) For conservative approach, emissions of PM10 and PM2.5 are assumed to be the same. Therefore, modelling results of PM10 and PM2.5 are identical. d) Averaged background pollutant concentrations have been included. e) Exceedance of air quality standard for cumulative annual NO2 at ASRs due to high background NO2 concentrations in the Project site area. f) Exceedance of air quality standard for cumulative annual PM10 at ASRs due to high background PM10 concentrations in the Project site area. g) Exceedance of air quality standard for cumulative 24-hour PM2.5 at ASRs due to high background PM2.5 concentrations in the Project site area. h) Exceedance of air quality standard for cumulative annual PM2.5 at ASRs due to high background PM2.5 concentrations in the Project site area. Summary of Cumulative Maximum Ground Level Concentrations at ASRs in 2013 (Project Contribution and Background)
Combined Cycle Mode (Main stacks S1 and S3 in operation) Simple Cycle Mode (Bypass stacks S2 and S4 in operation) ASR X Y Description Maximum Ground Level Concentration (µg/m3) Maximum Ground Level Concentration (µg/m3) (a) (a) (b) (c) (c) (c) (c) (a) (a) (b) (c) (c) (c) (c) 1-hr NO2 Annual NO2 10-min SO2 24-hr SO2 24-hr PM10 Annual PM10 24-hr PM2.5 Annual PM2.5 1-hr NO2 Annual NO2 10-min SO2 24-hr SO2 24-hr PM10 Annual PM10 24-hr PM2.5 Annual PM2.5 Background Concentration (e) 54.0 54.0 6.2 6.2 43.3 43.3 26.7 26.7 54.0 54.0 6.2 6.2 43.3 43.3 26.7 26.7 ASR1 746280 2364781 Steel Mill Worker Camp 62.8 54.3 7.0 6.2 43.4 43.3 26.7 26.7 56.0 - 6.3 6.2 43.3 - 26.7 - ASR2 745333 2364353 Monastery and Pagoda 61.9 54.2 6.9 6.2 43.3 43.3 26.7 26.7 55.9 - 6.3 6.2 43.3 - 26.7 - ASR3 747539 2365154 Hnan Ywa 63.0 54.3 7.0 6.2 43.4 43.3 26.7 26.7 56.7 - 6.4 6.2 43.3 - 26.7 - ASR4 747041 2367601 Sa Ka Village 61.7 55.0 6.9 6.3 43.5 43.3 26.8 26.7 57.1 - 6.5 6.2 43.3 - 26.7 - ASR5 743822 2368914 Gyoke Pin 58.5 54.1 6.6 6.2 43.3 43.3 26.7 26.7 56.0 - 6.3 6.2 43.3 - 26.7 - ASR6 741172 2368066 Hta Naung Taing 58.8 54.1 6.6 6.2 43.3 43.3 26.7 26.7 55.5 - 6.3 6.2 43.3 - 26.7 - ASR7 746155 2369882 Thein 57.9 54.3 6.5 6.2 43.4 43.3 26.7 26.7 55.9 - 6.3 6.2 43.3 - 26.7 - ASR8 746348 2371619 Ywar Si (North) 58.1 54.2 6.5 6.2 43.3 43.3 26.7 26.7 55.7 - 6.3 6.2 43.3 - 26.7 - ASR9 748378 2371379 Ywar Si (South) 59.1 54.3 6.6 6.2 43.4 43.3 26.7 26.7 55.9 - 6.3 6.2 43.3 - 26.7 - ASR10 749757 2368957 Ku 59.7 54.2 6.7 6.2 43.3 43.3 26.7 26.7 56.1 - 6.4 6.2 43.3 - 26.7 - ASR11 748625 2361995 Kan Sint 60.6 54.1 6.8 6.2 43.3 43.3 26.7 26.7 56.3 - 6.4 6.2 43.3 - 26.7 - ASR12 747339 2360829 Hpa Yar Hla 59.2 54.1 6.7 6.2 43.3 43.3 26.7 26.7 56.0 - 6.3 6.2 43.3 - 26.7 - ASR13 746061 2363202 Hpet Taw 59.9 54.2 6.7 6.2 43.3 43.3 26.7 26.7 56.0 - 6.3 6.2 43.3 - 26.7 - ASR14 743398 2364596 Nyaung Kan 60.1 54.1 6.7 6.2 43.4 43.3 26.7 26.7 55.8 - 6.3 6.2 43.3 - 26.7 - ASR15 744752 2361090 Unknown Village 61.7 54.1 6.9 6.2 43.3 43.3 26.7 26.7 55.9 - 6.3 6.2 43.3 - 26.7 - ASR16 742144 2363406 Ta Pin Kan Ywar Ma 60.6 54.1 6.8 6.2 43.3 43.3 26.7 26.7 55.8 - 6.3 6.2 43.3 - 26.7 - ASR17 741642 2362413 Ta Pin Kan (South) 60.4 54.1 6.8 6.2 43.3 43.3 26.7 26.7 55.7 - 6.3 6.2 43.3 - 26.7 - ASR18 746698 2366662 Steel Mill Worker Housing 76.1 55.3 8.3 6.5 43.6 43.4 27.0 26.7 56.7 - 6.4 6.2 43.4 - 26.7 - ASR19 746795 2365139 Government Technical High School 62.5 54.4 7.0 6.3 43.4 43.3 26.8 26.7 56.5 - 6.4 6.2 43.3 - 26.7 - Assessment Criteria (Myanmar NEQ) (d) 200 40 500 20 50 20 25 10 200 40 500 20 50 20 25 10
Maximum % of Cumulative Impact to 38% 138% 2% 32% 87% 217% 108% 267% 29% - 1% 31% 87% - 107% - criterion Notes: a) Reference to UK Air Quality Assessment Guidelines - short-term (1-hour) NO2 = 50% of NOx; long-term (annual) NO2 = 100% of NOx b) A general factor of 1.43 is used to convert hourly SO2 model results to 10-min averaged results c) For conservative approach, emissions of PM10 and PM2.5 are assumed to be the same. Therefore, modelling results of PM10 and PM2.5 are identical. d) Averaged background pollutant concentrations have been included. e) Exceedance of air quality standard for cumulative annual NO2 at ASRs due to high background NO2 concentrations in the Project site area. f) Exceedance of air quality standard for cumulative annual PM10 at ASRs due to high background PM10 concentrations in the Project site area. g) Exceedance of air quality standard for cumulative 24-hour PM2.5 at ASRs due to high background PM2.5 concentrations in the Project site area. h) Exceedance of air quality standard for cumulative annual PM2.5 at ASRs due to high background PM2.5 concentrations in the Project site area. Summary of Cumulative Maximum Ground Level Concentrations at ASRs in 2014 (Project Contribution and Background)
Combined Cycle Mode (Main stacks S1 and S3 in operation) Simple Cycle Mode (Bypass stacks S2 and S4 in operation) ASR X Y Description Maximum Ground Level Concentration (µg/m3) Maximum Ground Level Concentration (µg/m3) (a) (a) (b) (c) (c) (c) (c) (a) (a) (b) (c) (c) (c) (c) 1-hr NO2 Annual NO2 10-min SO2 24-hr SO2 24-hr PM10 Annual PM10 24-hr PM2.5 Annual PM2.5 1-hr NO2 Annual NO2 10-min SO2 24-hr SO2 24-hr PM10 Annual PM10 24-hr PM2.5 Annual PM2.5 Background Concentration (e) 54.0 54.0 6.2 6.2 43.3 43.3 26.7 26.7 54.0 54.0 6.2 6.2 43.3 43.3 26.7 26.7 ASR1 746280 2364781 Steel Mill Worker Camp 61.9 54.4 6.9 6.2 43.4 43.3 26.7 26.7 55.8 - 6.3 6.2 43.3 - 26.7 - ASR2 745333 2364353 Monastery and Pagoda 61.9 54.2 6.9 6.2 43.4 43.3 26.7 26.7 56.0 - 6.3 6.2 43.3 - 26.7 - ASR3 747539 2365154 Hnan Ywa 64.2 54.4 7.2 6.2 43.4 43.3 26.7 26.7 56.9 - 6.4 6.2 43.3 - 26.7 - ASR4 747041 2367601 Sa Ka Village 64.1 54.8 7.1 6.3 43.5 43.3 26.8 26.7 56.9 - 6.4 6.2 43.3 - 26.7 - ASR5 743822 2368914 Gyoke Pin 59.6 54.2 6.7 6.2 43.3 43.3 26.7 26.7 55.7 - 6.3 6.2 43.3 - 26.7 - ASR6 741172 2368066 Hta Naung Taing 59.3 54.1 6.7 6.2 43.3 43.3 26.7 26.7 55.2 - 6.3 6.2 43.3 - 26.7 - ASR7 746155 2369882 Thein 60.1 54.3 6.8 6.2 43.4 43.3 26.7 26.7 56.1 - 6.4 6.2 43.3 - 26.7 - ASR8 746348 2371619 Ywar Si (North) 60.2 54.2 6.8 6.2 43.3 43.3 26.7 26.7 55.7 - 6.3 6.2 43.3 - 26.7 - ASR9 748378 2371379 Ywar Si (South) 59.0 54.2 6.6 6.2 43.3 43.3 26.7 26.7 55.6 - 6.3 6.2 43.3 - 26.7 - ASR10 749757 2368957 Ku 59.8 54.2 6.7 6.2 43.3 43.3 26.7 26.7 55.8 - 6.3 6.2 43.3 - 26.7 - ASR11 748625 2361995 Kan Sint 60.2 54.2 6.8 6.2 43.4 43.3 26.7 26.7 56.0 - 6.3 6.2 43.3 - 26.7 - ASR12 747339 2360829 Hpa Yar Hla 60.2 54.2 6.8 6.2 43.4 43.3 26.7 26.7 55.8 - 6.3 6.2 43.3 - 26.7 - ASR13 746061 2363202 Hpet Taw 60.9 54.3 6.8 6.2 43.4 43.3 26.7 26.7 56.0 - 6.3 6.2 43.3 - 26.7 - ASR14 743398 2364596 Nyaung Kan 59.5 54.1 6.7 6.2 43.3 43.3 26.7 26.7 55.2 - 6.3 6.2 43.3 - 26.7 - ASR15 744752 2361090 Unknown Village 59.7 54.1 6.7 6.2 43.3 43.3 26.7 26.7 55.8 - 6.3 6.2 43.3 - 26.7 - ASR16 742144 2363406 Ta Pin Kan Ywar Ma 60.3 54.1 6.8 6.2 43.3 43.3 26.7 26.7 55.1 - 6.3 6.2 43.3 - 26.7 - ASR17 741642 2362413 Ta Pin Kan (South) 60.0 54.1 6.7 6.2 43.3 43.3 26.7 26.7 55.1 - 6.3 6.2 43.3 - 26.7 - ASR18 746698 2366662 Steel Mill Worker Housing 75.6 55.7 8.3 6.4 43.6 43.4 26.9 26.7 56.7 - 6.4 6.2 43.3 - 26.7 - ASR19 746795 2365139 Government Technical High School 62.7 54.6 7.0 6.3 43.4 43.3 26.8 26.7 56.4 - 6.4 6.2 43.3 - 26.7 - Assessment Criteria (Myanmar NEQ) (d) 200 40 500 20 50 20 25 10 200 40 500 20 50 20 25 10
Maximum % of Cumulative Impact to 38% 139% 2% 32% 87% 217% 108% 267% 28% - 1% 31% 87% - 107% - criterion Notes: a) Reference to UK Air Quality Assessment Guidelines - short-term (1-hour) NO2 = 50% of NOx; long-term (annual) NO2 = 100% of NOx b) A general factor of 1.43 is used to convert hourly SO2 model results to 10-min averaged results c) For conservative approach, emissions of PM10 and PM2.5 are assumed to be the same. Therefore, modelling results of PM10 and PM2.5 are identical. d) Averaged background pollutant concentrations have been included. e) Exceedance of air quality standard for cumulative annual NO2 at ASRs due to high background NO2 concentrations in the Project site area. f) Exceedance of air quality standard for cumulative annual PM10 at ASRs due to high background PM10 concentrations in the Project site area. g) Exceedance of air quality standard for cumulative 24-hour PM2.5 at ASRs due to high background PM2.5 concentrations in the Project site area. h) Exceedance of air quality standard for cumulative annual PM2.5 at ASRs due to high background PM2.5 concentrations in the Project site area.
Annex F
Draft Decommissioning Management Plan SEMBCORP INDUSTRIES LTD
Doc. No. Rev. No Policy Level Title Myingyan CCGT Power Plant 0.0 Draft Decommissioning Management Plan
Effective Date: Next Review: Access Level Public
Approved by Approved by Authority Policy Owner: Reviewed by: SMC/CEO: BRC: (if applicable) (if applicable)
Signature & Date:
Name:
Designation:
MYINGYAN CCGT POWER PLANT Draft Decommissioning Management Plan
Doc No. Rev. No. Title 0.0 Draft Decommissioning Management Plan
CONTENTS
1 INTRODUCTION 3
1.1 CONTEXT OF THE DOCUMENT 3 1.2 STRUCTURE OF THIS PLAN 3 1.3 SCOPE OF THE DMP 3
2 PROJECT DESCRIPTION 5
3 DESCRIPTION OF DECOMMISSIONING PHASE 7
4 DRAFT MITIGATION AND MANAGEMENT MEASURES 8
MYINGYAN CCGT POWER PLANT Draft Decommissioning Management Plan
Doc No. Rev. No. Title 0.0 Draft Decommissioning Management Plan
1 INTRODUCTION
1.1 CONTEXT OF THE DOCUMENT
Sembcorp has been selected by the Ministry of Electric Power (MOEP) of the Government of Myanmar (GOM) as a private sector Independent Power Producer (IPP) to develop a 225MW Combined Cycle Gas Turbine (CCGT) power plant in Myingyan Township, Mandalay Region, Myanmar (the Project). The Project is comprised of the following components:
A 225MW CCGT power plant;
A 230kV overhead transmission line (construct but to handover to MOEE); and
Water supply pipeline, wastewater discharge pipeline and water intake and pumping station.
The Project will use an efficient form of CCGT power generation technology, which is designed for high reliability and efficient operation. The electricity generated by the Project, from natural gas, will be sold under a 22-year Power Purchase Agreement (PPA), as agreed with the Ministry of Electric Power Enterprise (MEPE)1.
The Project will proceed with international financing provided by Asian Development Bank (ADB), International Finance Corporation (IFC), and other banks that have adopted the Equator Principles (EPs).
This document forms a draft Decommissioning Management Plan (DMP). The draft DMP is
¢ £¤¥ ¤¦§ ¨ © ¦ ¡ ¤££ ¨ ¡ ¨ ¡ ¦¨ ¡ refined as the Project progresses. This will include revisions prior to the end of the operation phase so that the DEP continues to be fit for purpose.
1.2 STRUCTURE OF THIS PLAN
The remainder of this document is structured in the following manner:
Section 2: Scope of the Draft DMP;
Section 3: Project Description;
Section 4: Description of Decommissioning Phase; and
Section 4: Draft Mitigation and Management Measures.
1.3 SCOPE OF THE DRAFT DMP
This draft DMP details the mitigation and management measures to prevent, reduce and where possible offset any significant adverse effects identified for the decommissioning phase. Where mitigation measures are not yet fully developed, or require changes, these will be be presented in further iterations of the DMP together with the justification for changes made.
1 MEPE is now referred to as the Electric Power Generation Enterprise (EPGE).
THIS DOCUMENT IS THE PROPERTY OF SEMBCORP INDUSTRIES LTD. NEITHER WHOLE NOR ANY PART OF THE DOCUMENT SHALL BE DISCLOSED, PRODUCED, TRANSMITTED IN ANY FORM OR BY ANY MEANS WITHOUT THE PRIOR WRITTEN CONSENT OF THE OWNER. Page 3 of 20 MYINGYAN CCGT POWER PLANT Draft Decommissioning Management Plan
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The following environmental aspects were identified at the time of completing the Environmental and Social Impact Assessment (ESIA) as having the potential impacts due to decommissioning.
Air Quality;
Surface Water Quality;
Noise and Vibration;
Soils and Groundwater;
Waste; and
Terrestrial and Marine Biodiversity;
Transportation;
Occupational Health and Safety;
Community Health and Safety; and
Social Impacts.
The environmental aspects identified will be considered in this draft DMP. It should be noted that details of the specific activities associated with decommissioning and demolition are not understood at this stage. This draft DMP therefore presents the general mitigation and measure management that are considered to be appropriate following completion of the ESIA studies.
THIS DOCUMENT IS THE PROPERTY OF SEMBCORP INDUSTRIES LTD. NEITHER WHOLE NOR ANY PART OF THE DOCUMENT SHALL BE DISCLOSED, PRODUCED, TRANSMITTED IN ANY FORM OR BY ANY MEANS WITHOUT THE PRIOR WRITTEN CONSENT OF THE OWNER. Page 4 of 20 MYINGYAN CCGT POWER PLANT Draft Decommissioning Management Plan
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2 PROJECT DESCRIPTION
Sembcorp is planning to develop a 225MW CCGT power plant in Myingyan Township, Mandalay, Myanmar (Figure 2.1). The Project site is located adjacent to an existing steel mill (Myingyan Steel Mill No.4), owned by Ministry of Industry (MOI).
Figure 2.1 Project Location
The Project will be comprised of the following infrastructure:
A 225MW CCGT power plant, which will include the following main components:
2 sets of gas turbine (GT) units;
2 sets of heat recovery system generator (HRSG);
1 steam turbine generating unit with associated auxiliary equipment;
Switchyard area;
Cooling water system;
Demineralised water system; and
Wastewater treatment facility.
The power plant will be located on a predominately green field site. The design life of the power plant, after the construction phase, is estimated to be 25 years.
THIS DOCUMENT IS THE PROPERTY OF SEMBCORP INDUSTRIES LTD. NEITHER WHOLE NOR ANY PART OF THE DOCUMENT SHALL BE DISCLOSED, PRODUCED, TRANSMITTED IN ANY FORM OR BY ANY MEANS WITHOUT THE PRIOR WRITTEN CONSENT OF THE OWNER. Page 5 of 20 MYINGYAN CCGT POWER PLANT Draft Decommissioning Management Plan
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A 230kV overhead transmission line, which will connect the power plant to the upgraded Myingyan Steel Mill sub-station located within the adjacent steel mill complex. The transmission line will be approximately 2.5 km in length. Sembcorp will construct the 230kV overhead transmission line and handover to MOEE after the completion of construction.
The water supply pipeline, which will be approximately 14 km in length, will connect the power plant to the water intake point and a new pumping station at the Ayeyarwady River. The wastewater discharge pipeline will connect the Power Plant to the Ayeyarwady River (approximately 14km in length). The wastewater pipeline will be run in parallel with the water supply pipeline. Both pipelines will share the 2m easement.
There are a number of villages located in close proximity to the Project site boundary. These include:
Sa Khar village;
Hnan Ywa village;
Hpet Taw village;
Nyaung Kan village;
Gyoke Pin village;
Thien Ywa village;
Tha Pyay Thar village;
Kyun U village;
Ka Laing Chon village;
Ayeywar village;
Seik Nyan village; and
Ma Yoe Kone village.
THIS DOCUMENT IS THE PROPERTY OF SEMBCORP INDUSTRIES LTD. NEITHER WHOLE NOR ANY PART OF THE DOCUMENT SHALL BE DISCLOSED, PRODUCED, TRANSMITTED IN ANY FORM OR BY ANY MEANS WITHOUT THE PRIOR WRITTEN CONSENT OF THE OWNER. Page 6 of 20 MYINGYAN CCGT POWER PLANT Draft Decommissioning Management Plan
Doc No. Rev. No. Title 0.0 Draft Decommissioning Management Plan
3 DESCRIPTION OF DECOMMISSIONING PHASE
Decommissioning is the term used to describe all the stages involved in the closure and rehabilitation of the Project site. The process can generally be categorized into three key phases as follows:
Pre-decommissioning activities: includes the detailed planning (development of the decommissioning plan) and approval procedures;
Decommissioning activities: removal of plant machinery & equipment and demolition, decommissioning of facilities, turbines and infrastructure, decontaminated land assessment and rehabilitation; and
Post-decommissioning activities: site survey, close-out report and field monitoring as necessary.
The design life of the Project is estimated to be 25 years. If the Power Purchase Agreement, Land Lease Agreement, Gas Supply Agreement and the other relevant agreements are not extended or renewed and an alternative economical fuel is available, the power plant may be retrofitted to support alternative power generation. This option would be possible, provided the required retrofits and new emission rates meet the applicable standards and guidelines at that time.
If retrofitting is not feasible and the operational life of the Power Plant expires, the Project will be decommissioned according to the requirements of the authorities at that time according to best industry practices.
The Project facilities have been designed with decommissioning in mind. In general, facilities and machinery have been designed so that they can be isolated and decommissioned in steps which are in reverse of the installation procedure or which are most convenient to do so. The decommissioning phase activities will therefore be similar to those associated with the excavation/foundation work, installation and civil construction phases.
A detailed review of actual decommissioning activities to be undertaken will be undertaken as part of the Pre-decommissioning activities including an assessment of the associated environmental, health, safety and social impacts. This Draft DMP will also be reviewed and updated as part of this decommissioning planning.
THIS DOCUMENT IS THE PROPERTY OF SEMBCORP INDUSTRIES LTD. NEITHER WHOLE NOR ANY PART OF THE DOCUMENT SHALL BE DISCLOSED, PRODUCED, TRANSMITTED IN ANY FORM OR BY ANY MEANS WITHOUT THE PRIOR WRITTEN CONSENT OF THE OWNER. Page 7 of 20 MYINGYAN CCGT POWER PLANT Draft Decommissioning Management Plan
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4 DRAFT MITIGATION AND MANAGEMENT MEASURES
A summary of the draft decommissioning mitigation and measures identified following completion of the ESIA are presented in Table 4.1. The table also identifies lead responsibility for implementing the mitigation measures and sources of funds for such implementation. Many of the mitigation measures suggested during the construction phase of the Project are associated with good construction and housekeeping practices.
THIS DOCUMENT IS THE PROPERTY OF SEMBCORP INDUSTRIES LTD. NEITHER WHOLE NOR ANY PART OF THE DOCUMENT SHALL BE DISCLOSED, PRODUCED, TRANSMITTED IN ANY FORM OR BY ANY MEANS WITHOUT THE PRIOR WRITTEN CONSENT OF THE OWNER. Page 8 of 20 MYINGYAN CCGT POWER PLANT Draft Decommissioning Management Plan
Doc No. Rev. No. Title 0.0 Draft Decommissioning Management Plan
Table 4.1 Draft Decommissioning Mitigation and Management Measures
S. Project Stage/ Project Activity and Potential Impacts Proposed Mitigation and Management Measures Responsibility Responsibility for Reporting Mitigation Cost No. Affected affected area for Mitigation supervision of mitigation Requirements Source Aspect Implementation implementation
1.1 Air Quality Operation of heavy Exhaust Emissions A speed limit of 15 km/hr will be enforced on the site/access road. Plant EHS Team Designated Team comprising Relevant Records Plant
machinery and Regularly maintain all diesel-powered equipment and reduce idling time to avoid and of representation from EHS maintained. Decommissioning transport vehicles emissions of NOx, PM10 and SO2. Decommissioning and Decommissioning Monthly internal Cost
Where available use low sulphur diesel (LSD) in HGVs and diesel powered reports to top equipment. management and
Implement best practice procedures to control vehicle / equipment air emissions reports to (such as turning off equipment when not in use). regulatory
Vehicle / equipment exhausts observed to be emitting significant black smoke from authorities/lenders their exhausts will be serviced/ replaced. as required.
1.2 Air Quality Overall activities Dust Erection of minimum 2m high site hoardings around the site boundary. Plant EHS Team Designated Team comprising Relevant Records Plant
Water spraying of or covering all exposed areas and stockpiles. and of representation from EHS maintained. Decommissioning
Specifying transport networks and locating stockpiles as far away from the site Decommissioning and Decommissioning Monthly internal Cost boundary which is close to the air sensitive receptors, as practicable to minimize the reports to top impact of air pollutants and dust. management and
Minimizing the size of exposed areas and material stockpiles and the periods of their reports to existence. regulatory
Temporary stockpiles of dusty materials will be either covered entirely by impervious authorities/lenders sheets or sprayed with water to maintain the entire surface wet all the time. as required.
Covering the materials transported by trucks or vehicles entirely to prevent dust emissions.
Cleaning wheels and the lower body parts of trucks at all exits of the site.
Cleaning the entire work sites at least once per week.
Controlling the height of unloading the fill materials during filling as far as possible. Where possible, this should be well below the height of the hoardings along the Project site boundary.
Watering the main haul road regularly to suppress dust emissions during truck movement.
Prohibiting the burning of waste or vegetation on site.
Compacting the reclaimed land immediately to avoid fugitive dust emissions.
Maintaining and checking the equipment regularly.
Switching off engines when idling.
Using ultra-low sulphur diesel for trucks and diesel-fuelled equipment if available.
1.3 Air Quality* Monitoring Monthly on-site inspection is recommended to ensure proper implementation of the Plant EHS Team Designated Team comprising Relevant Records Plant proposed mitigation and management measures. and of representation from EHS maintained. Decommissioning Decommissioning and Decommissioning Monthly internal Cost reports to top management and reports to regulatory authorities/lenders as required.
THIS DOCUMENT IS THE PROPERTY OF SEMBCORP INDUSTRIES LTD. NEITHER WHOLE NOR ANY PART OF THE DOCUMENT SHALL BE DISCLOSED, PRODUCED, TRANSMITTED IN ANY FORM OR BY ANY MEANS WITHOUT THE PRIOR WRITTEN CONSENT OF THE OWNER. Page 9 of 20 MYINGYAN CCGT POWER PLANT Draft Decommissioning Management Plan
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S. Project Stage/ Project Activity and Potential Impacts Proposed Mitigation and Management Measures Responsibility Responsibility for Reporting Mitigation Cost No. Affected affected area for Mitigation supervision of mitigation Requirements Source Aspect Implementation implementation
2.1 Surface Water Wastewater Impacts to surface Install silt trap to treat surface run-off from bunded areas prior to discharge to the Plant EHS Team Designated Team comprising Relevant Records Plant Quality Discharges and water due to stormwater system. and of representation from EHS maintained. Decommissioning
Runoff wastewater Implement adequate sanitary facilities, (one toilet for every 25 workers up to the first Decommissioning and Decommissioning Monthly internal Cost discharges and 100, and one for every 50 thereafter). reports to top
sediment-laden runoff Liquid effluents arising from activities will be treated to the applicable Myanmar NEQ management and and IFC guideline prior to discharge. reports to
Septic tanks will be provided to treat sanitary discharge. regulatory
Exposed soil surfaces should be protected by paving or fill material as soon as authorities/lenders possible to reduce the potential of soil erosion and subsequent sedimentation. as required.
Open stockpiles of materials or wastes on-site should be covered with tarpaulin or similar fabric during rainstorms.
Use methods for minimising sediment runoff, as appropriate to the conditions on- site, including wheel cleaning facilities.
Provision of channels, earth bunds or sand bag barriers on site to direct stormwater to silt removal facilities.
Design drainage pipes and culverts for the controlled release of storm flows.
Protect temporary trafficked areas on-site with coarse stone ballast or equivalent.
Regularly, and particularly following rainstorms, inspect and maintain drainage systems and erosion control and silt removal facilities to ensure proper and efficient operation at all times.
Provide measures to reduce the ingress of site drainage into excavations. If trenches have to be excavated during the wet season, excavate and backfill them in short sections wherever practicable. Discharge any water pumped out from trenches or foundation excavations into storm drains via silt removal facilities.
Mulch to stabilise exposed areas, where practicable and appropriate.
Re-vegetate areas promptly, where practicable and appropriate.
Provide measures to prevent the washing away of materials, soil, silt or debris into any drainage system of open stockpiles of materials.
Install onsite wastewater treatment facilities or processes such as filtration, flocculation or biochemical treatment before discharge to river.
Surface run-off from bunded areas should pass through oil/water separators prior to discharge to the stormwater system.
Wastewater collected from canteen kitchens, including that from basins, sinks and floor drains, should be discharged into sanitary sewers via grease traps. The sanitary sewer should then be treated prior to discharge or reuse as greywater.
Oil-contaminated water will be collected and handled by local licensed wastewater sub-contractors (if available, to be determined at a later stage).
2.2 Surface Water Waste Storage and Impact to surface Implement the same mitigation measures to minimize impacts to Waste Plant EHS Team Designated Team comprising Relevant Records Plant Quality Disposal water contamination Management (See Items 4.1 and 4.2). and of representation from EHS maintained. Decommissioning
from inappropriate Provide training to labourers for waste disposal in designated areas and use of Decommissioning and Decommissioning Monthly internal Cost waste management sanitation facilities. reports to top
Implement proper storage of the materials and wastes to minimise the potential management and damage or contamination of the materials. reports to
Implement materials inventory management system to minimise over-supply of the regulatory materials, which may lead to disposal of the surplus materials at the end of the authorities/lenders decommissioning period. as required.
Segregate hazardous and non-hazardous waste and provide appropriate containers for the type of waste type (e.g. enclosed bins for putrescible materials to avoid attracting pests and vermin and to minimise odour nuisance).
Store wastes in closed containers away from direct sunlight, wind and rain.
Store waste systematically to allow inspection between containers to monitor leaks or spills.
Ensure that storage areas have impermeable floors and containment, of capacity to accommodate 110% of the volume of the largest waste container.
Dispose of waste by licensed contractors.
THIS DOCUMENT IS THE PROPERTY OF SEMBCORP INDUSTRIES LTD. NEITHER WHOLE NOR ANY PART OF THE DOCUMENT SHALL BE DISCLOSED, PRODUCED, TRANSMITTED IN ANY FORM OR BY ANY MEANS WITHOUT THE PRIOR WRITTEN CONSENT OF THE OWNER. Page 10 of 20 MYINGYAN CCGT POWER PLANT Draft Decommissioning Management Plan
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S. Project Stage/ Project Activity and Potential Impacts Proposed Mitigation and Management Measures Responsibility Responsibility for Reporting Mitigation Cost No. Affected affected area for Mitigation supervision of mitigation Requirements Source Aspect Implementation implementation
2.3 Surface Water Accidental Spills and Impact to surface Disposal sites to be designed for hazardous and non-hazardous waste, including Plant EHS Team Designated Team comprising Relevant Records Plant Quality Leaks. Potentially water due to sludge disposal. and of representation from EHS maintained. Decommissioning
from fuelling and contamination from Hazardous waste storage areas will comply with best practice/ international Decommissioning and Decommissioning Monthly internal Cost operation of heavy accidental releases of standards. reports to top
machinery, transport hazardous substances Mitigation measures/ monitoring programme with regard to accidental events/ spills management and vehicles and Storage such as fuels, oils or shall be communicated to the relevant workforce. reports to
and handling of lubricants, as well as Carry out land contamination assessments and identification of legacy contaminated regulatory chemicals improper chemical/fuel land sites. authorities/lenders
storage Contractor will prepare unloading and loading protocols and train staff to prevent as required. spills and leaks.
Contractor will prepare guidelines and procedures for immediate clean-up actions following any spillages of oils, fuels or chemicals.
A site specific Emergency Response Plan will be prepared by the Contractor for soil clean-up and decontamination.
Fuel tanks and chemical storage areas will be sited on sealed areas and provided with locks to prevent unauthorized entry.
Use of spill or drip trays to contain spills and leaks.
Use of spill control kits to contain and clean small spills and leaks.
The storage areas for oil, fuel and chemicals will be surrounded by bunds or other containment devices to prevent spilled oil, fuel and chemicals from percolating into the ground or reaching the receiving waters.
Contractor will implement a training program to familiarise staff with emergency procedures and practices related to contamination events.
Implement a materials inventory management system to minimise over-supply of the materials, which may lead to disposal of the surplus materials at the end of the decommissioning period;
Provide dedicated storage areas for decommissioning materials to minimise the potential for damage or contamination of the materials.
Segregate hazardous and non-hazardous waste and provide appropriate containers for the waste types' generated (e.g. enclosed bins for putrescible materials to avoid attracting pests and vermin and to minimise odour nuisance).
Store wastes in closed containers away from direct sunlight, wind and rain.
Provide enough space to allow for inspection between waste containers so as to identify any leaks or spills.
Ensure storage areas have impermeable floor and containment, of capacity to accommodate 110% of the volume of the largest waste container.
Storage of inert concrete waste in a laydown area near the concrete batching plant and reuse of these wastes under floors or roads.
Dispose of hazardous waste including bitumen by licensed contractors.
Oil-contaminated water will be collected and handled by local licensed wastewater sub-contractors (if available, to be determined at a later stage).
Vehicle servicing areas, vehicle wash bays and lubrication bays will, as far as practical, be located within roofed and cemented areas. The drainage in these covered areas will be connected to sewers via an oil/water interceptor.
3.1 Noise Overall activities inc. Increase in ambient ¡ Well-maintained equipment to be operated on-site; Plant EHS Team Designated Team comprising Relevant Records Plant heavy machinery noise levels and of representation from EHS maintained. Decommissioning ¡ Regular maintenance of equipment such as lubricating moving parts, tightening loose operations parts and replacing worn out components; Decommissioning and Decommissioning Monthly internal Cost reports to top
¡ Shut down or throttled down between work periods for machines and plant items (e.g. management and trucks) that may be in intermittent use; reports to
¡ Reduce the number of equipment operating simultaneously as far as practicable; regulatory
¡ Orientate equipment known to emit noise strongly in one direction so that the noise is authorities/lenders directed away from receptors far as practicable; as required.
¡ Locate noisy plant as far away from receptors as practicable;
¡ Avoid transportation of materials on- and off-site through existing community areas;
THIS DOCUMENT IS THE PROPERTY OF SEMBCORP INDUSTRIES LTD. NEITHER WHOLE NOR ANY PART OF THE DOCUMENT SHALL BE DISCLOSED, PRODUCED, TRANSMITTED IN ANY FORM OR BY ANY MEANS WITHOUT THE PRIOR WRITTEN CONSENT OF THE OWNER. Page 11 of 20 MYINGYAN CCGT POWER PLANT Draft Decommissioning Management Plan
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S. Project Stage/ Project Activity and Potential Impacts Proposed Mitigation and Management Measures Responsibility Responsibility for Reporting Mitigation Cost No. Affected affected area for Mitigation supervision of mitigation Requirements Source Aspect Implementation implementation and
Use material stockpiles and other structures, where practicable, to screen noise sensitive receptors from on-site activities.
3.2 Noise Increased traffic Increase in ambient Vehicles should be regularly maintained. Plant EHS Team Designated Team comprising Relevant Records Plant noise levels and of representation from EHS maintained. Decommissioning Avoid transportation of materials on- and off-site through existing community areas. Decommissioning and Decommissioning Monthly internal Cost reports to top management and reports to regulatory authorities/lenders as required.
4.1 Waste Disposal of Impacts due to No vegetation is to be disposed of by burning. Plant EHS Team Designated Team comprising Relevant Records Plant Removed Biomass improper disposal of and of representation from EHS maintained. Decommissioning removed biomass Decommissioning and Decommissioning Monthly internal Cost reports to top management and reports to regulatory authorities/lenders as required.
4.2 Waste Solid Waste Impacts to community Waste collection and storage measures will be implemented. Plant EHS Team Designated Team comprising Relevant Records Plant Generation, Storage and worker health and and of representation from EHS maintained. Decommissioning A waste management plan is to be developed which includes specific requirements to and Disposal safety due to manage, avoid, reduce and reuse waste for all of the waste streams identified. Decommissioning and Decommissioning Monthly internal Cost contamination of reports to top
Education of all workers on site shall be undertaken to avoid, reduce and reuse drinking water or food management and wastes generated. reports to
Accidental leaks or Waste disposal facilities shall be sited and signposted throughout the site. regulatory
spills of oil, fuel or Waste clean-up measures are to be undertaken on at least a fortnightly basis to authorities/lenders other hazardous collect any waste or unused materials from the site. All waste collected should be as required. materials could managed and disposed of in accordance with the accepted best practice for waste potentially pollute collection and disposal. surface waters Contractors employed to manage the waste should clearly identify within their bidding documents how the collected waste will be managed. All end points for collected Soil may be waste are to be inspected and audited and noted to be developed such that all waste contaminated by is able to be disposed of in an environmental responsible manner and in accordance pollution from spills or with all prevailing regulations. leaks of fuel, oil and
Monitoring of appointed waste contractors using chain-of custody documentation for other hazardous liquid the disposal of waste to ensure that it is able to be disposed of in an environmental wastes which are responsible manner and in accordance with all prevailing regulations. incorrectly stored.
The appointed waste contractor shall report on an annual basis on any cross- boundary transport of waste.
5.1 Soil and Sourcing of backfill Soil and sediment Unloading and loading protocols will be developed to ensure that staff are able to Plant EHS Team Designated Team comprising Relevant Records Plant sediment material. Fuelling contamination through undertake these tasks in a manner that minimises the risks of spills occurring. and of representation from EHS maintained. Decommissioning
Quality and operation of spills and leaks and Fuel tanks and chemical storage areas will be sited on sealed hardstand areas, Decommissioning and Decommissioning Monthly internal Cost heavy machinery use of potentially provided with locks to prevent unauthorised entry where appropriate. reports to top
and transport contaminated fill Secondary containment, with appropriate drainage connection and/or provision for management and vehicles. material removal of spilled liquids, will be provided around places of fuel and hazardous reports to materials storage such as oil filled transformers, oil pumps and tanks, generators, regulatory chemical storage houses etc. to contain any hazardous spills and to exclude surface authorities/lenders water run-off from entering the contained area. The containment capacity of these as required. areas is to accommodate 110% of the volume of the largest container.
THIS DOCUMENT IS THE PROPERTY OF SEMBCORP INDUSTRIES LTD. NEITHER WHOLE NOR ANY PART OF THE DOCUMENT SHALL BE DISCLOSED, PRODUCED, TRANSMITTED IN ANY FORM OR BY ANY MEANS WITHOUT THE PRIOR WRITTEN CONSENT OF THE OWNER. Page 12 of 20 MYINGYAN CCGT POWER PLANT Draft Decommissioning Management Plan
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S. Project Stage/ Project Activity and Potential Impacts Proposed Mitigation and Management Measures Responsibility Responsibility for Reporting Mitigation Cost No. Affected affected area for Mitigation supervision of mitigation Requirements Source Aspect Implementation implementation
Any refuelling activities will only take place within a designated hard stand area with spill kits present.
All mobile equipment is to be equipped with spill or drip trays to contain spills and leaks.
Equipment and vehicle maintenance scheduling is to be undertaken such that they are continually monitored for potential or actual leaks.
Mobile toilets are to be provided throughout the site for use by workers. No sanitary effluent is to be disposed of on, or adjoining the site.
A training program will be implemented to familiarise staff with measures to be taken to prevent spills and leaks, and for emergency procedures and practices related to contamination events;
Should any of the above measures fail to prevent spills or leaks occurring, the follow are also to be in place to ensure that any contamination is swiftly cleaned.
Specific guidelines and procedures for immediate clean-up actions following any spillages of oils, fuels or chemicals is to be developed.
A site specific Emergency Response Plan will be prepared for soil clean-up and decontamination.
All mobile vehicles are to be equipped with spill control kits to contain and clean small spills and leaks.
For any spills or leaks, once the initial emergency response has been implemented, an appropriate mean up and monitoring plan is to be developed. This is to take into account the type of spill and its extent. It is also to include provisions for monitoring of soil and groundwater quality to track potential or actual migration of the contamination through the soil and groundwater profiles.
5.2 Soil Quality Storage, handling Soil contamination Storage of all inert concrete waste will be undertaken in a dedicated laydown area. Plant EHS Team Designated Team comprising Relevant Records Plant
and disposal of A dedicated storage area for material will be developed to minimise the potential for and of representation from EHS maintained. Decommissioning waste damage or contamination of the material. Decommissioning and Decommissioning Monthly internal Cost
Sufficient space will be left between all waste containers so as to identify any spills or reports to top leaks. management and reports to Appropriate management, storage and disposal of all waste streams will be implemented in accordance with the measures developed within Items 4.1 and 4.2 regulatory above. authorities/lenders as required. A Hazardous Materials Management Plan and a Decommissioning Waste Management Plan will be developed to integrate all these measures.
A materials inventory management system will be implemented to minimise over supply of and materials (hazardous and non-hazardous), which may lead to disposal of the surplus materials at the end of the decommissioning period.
5.3 Soil Quality Generation of Soil contamination Adequate sanitary facilities, (one toilet for every 25 workers up to the first 100, and Plant EHS Team Designated Team comprising Relevant Records Plant sanitary effluent one for every 50 thereafter) will be provided for the workforce. and of representation from EHS maintained. Decommissioning
Liquid effluents arising from decommissioning activities will be treated to the Decommissioning and Decommissioning Monthly internal Cost standards specified in the applicable Myanmar NEQ and IFC guidelines prior to reports to top discharge. management and
Septic tanks will be provided to treat sanitary discharge. reports to regulatory authorities/lenders as required.
6.1 Ground Water Fuelling and Contamination of See Item 5.1 Plant EHS Team Designated Team comprising Relevant Records Plant Quality operation of heavy groundwater and of representation from EHS maintained. Decommissioning machinery and Decommissioning and Decommissioning Monthly internal Cost transport vehicles reports to top management and reports to regulatory
THIS DOCUMENT IS THE PROPERTY OF SEMBCORP INDUSTRIES LTD. NEITHER WHOLE NOR ANY PART OF THE DOCUMENT SHALL BE DISCLOSED, PRODUCED, TRANSMITTED IN ANY FORM OR BY ANY MEANS WITHOUT THE PRIOR WRITTEN CONSENT OF THE OWNER. Page 13 of 20 MYINGYAN CCGT POWER PLANT Draft Decommissioning Management Plan
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S. Project Stage/ Project Activity and Potential Impacts Proposed Mitigation and Management Measures Responsibility Responsibility for Reporting Mitigation Cost No. Affected affected area for Mitigation supervision of mitigation Requirements Source Aspect Implementation implementation authorities/lenders as required.
6.2 Ground Water Generation of Contamination of See Item 5.3 Plant EHS Team Designated Team comprising Relevant Records Plant Quality sanitary effluent groundwater by and of representation from EHS maintained. Decommissioning sanitary effluent Decommissioning and Decommissioning Monthly internal Cost reports to top management and reports to regulatory authorities/lenders as required.
6.3 Ground Water Storage and Contamination of See Item 5.1 Plant EHS Team Designated Team comprising Relevant Records Plant Quality handling of groundwater and of representation from EHS maintained. Decommissioning chemicals Decommissioning and Decommissioning Monthly internal Cost reports to top management and reports to regulatory authorities/lenders as required.
6.4 Groundwater Groundwater use Draw-down from Monitor the quantity of groundwater abstracted and associated draw down. Plant EHS Team Designated Team comprising Relevant Records Plant
Quantity extraction of onsite Address and respond to any community complaints regarding Project impacts on and of representation from EHS maintained. Decommissioning (Drawdown) groundwater wells groundwater availability. Decommissioning and Decommissioning Monthly internal Cost could potentially impact reports to top groundwater levels. management and reports to regulatory authorities/lenders as required.
7.1 Biodiversity Decommissioning Loss of habitat The planned clearance area for the works shall be clearly identified and marked to Plant EHS Team Designated Team comprising Relevant Records Plant activities avoid accidental clearing. and of representation from EHS maintained. Decommissioning Decommissioning and Decommissioning Monthly internal Cost Project will utilise or upgrade existing roads where possible to minimise unnecessary clearing requirements. reports to top management and reports to regulatory authorities/lenders as required.
7.2 Biodiversity Decommissioning Disturbance to fauna Vehicles and machinery will be maintained in accordance with industry standard to Plant EHS Team Designated Team comprising Relevant Records Plant activities behaviour minimise unnecessary noise generation. and of representation from EHS maintained. Decommissioning Decommissioning and Decommissioning Monthly internal Cost Arrangement of transportation schedules will aim to avoid peak hours of road usage to minimise heavy traffic through habitat areas. reports to top management and
Traffic signs will be installed on all roads throughout working areas depicting speed reports to limits. regulatory
For areas requiring night-time lighting, lights will be used only where necessary and authorities/lenders will be directed toward the subject area and away from habitat areas where possible. as required.
Commitment will be made to raise awareness of the work force and make arrangements for restriction of poaching.
7.3 Biodiversity Decommissioning Edge effects Dust suppression techniques will be utilised to control the dispersion of dust created Plant EHS Team Designated Team comprising Relevant Records Plant activities by clearing lands at the decommissioning area. and of representation from EHS maintained. Decommissioning Decommissioning and Decommissioning Monthly internal Cost The Project shall implement landscaping and re-vegetation after completion of decommissioning using native species where possible. reports to top management and
To avoid/minimize releasing sediment load into the river, erosion control measures
THIS DOCUMENT IS THE PROPERTY OF SEMBCORP INDUSTRIES LTD. NEITHER WHOLE NOR ANY PART OF THE DOCUMENT SHALL BE DISCLOSED, PRODUCED, TRANSMITTED IN ANY FORM OR BY ANY MEANS WITHOUT THE PRIOR WRITTEN CONSENT OF THE OWNER. Page 14 of 20 MYINGYAN CCGT POWER PLANT Draft Decommissioning Management Plan
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S. Project Stage/ Project Activity and Potential Impacts Proposed Mitigation and Management Measures Responsibility Responsibility for Reporting Mitigation Cost No. Affected affected area for Mitigation supervision of mitigation Requirements Source Aspect Implementation implementation will be implemented and maintained e.g. using silt fence and temporary re-vegetation reports to to minimize sediment transport from steep slope releasing to the river and smaller regulatory waterways. authorities/lenders as required. Weed and pest management measures should be implemented in accordance with a Project weed and pest management plan to avoid introduction of weeds to natural and modified habitat areas.
7.4 Biodiversity Decommissioning Degradation of habitat Waste will be appropriately stored and disposed of to avoid attracting native and alien Plant EHS Team Designated Team comprising Relevant Records Plant activities species to the decommissioning areas. and of representation from EHS maintained. Decommissioning Decommissioning and Decommissioning Monthly internal Cost For areas in direct runoff path to a watercourse, sediment and erosion control devices will be installed and maintained until vegetation replanting can occur to stabilise reports to top disturbed surfaces. management and reports to
Oil, chemical and solid waste will be stored, and handled and disposed of by regulatory appropriately licenced waste management contractors. authorities/lenders
Weed and pest management measures should be implemented in accordance with a as required. Project weed and pest management plan to avoid introduction of weeds to natural and modified habitat areas.
Speed limits to maximum of 15 km/hr for vehicles will be enforced to limit noise and dust generation.
Materials and chemicals will be appropriately secured and locked down during flood season to avoid accidental release to the natural environment.
Engineering works will be designed to comply with the agreed water quality standards;
Water quality monitoring will begin as soon as possible after the Project begins, in order to control the quality of discharge water.
Emergency response plan and procedures will be prepared and implemented for the decommissioning activities of the Project. This will include emergency drills and education of Project workers.
7.5 Biodiversity Decommissioning Fauna mortality Speed limits to maximum of 15 km/hr for vehicles will be enforced to minimise Plant EHS Team Designated Team comprising Relevant Records Plant activities potential for fauna strike. and of representation from EHS maintained. Decommissioning Decommissioning and Decommissioning Monthly internal Cost Commitment will be made to raise awareness of values of natural habitat areas to the work force and arrangements will be made for restriction of poaching and forest reports to top product collection. management and reports to
Hunting wild animals will be strictly prohibited to apply for all staff. regulatory
Fishing and using of illegal fishing gear anywhere along the river will be prohibited. authorities/lenders as required.
8.1 Transportation Transportation of Disturbance to existing Accommodation for the migrant workforce and Sponsor personnel shall be provided Plant EHS Team Designated Team comprising Relevant Records Plant personnel by road road users through in the vicinity of the Project site to minimise the distance travelled. and of representation from EHS maintained. Decommissioning increase in road traffic Decommissioning and Decommissioning Monthly internal Cost Road safety initiatives will be implemented to minimise risks to other users, including: reports to top o Emphasizing safety aspects among drivers, particularly with regard to safe management and driving speed of 15 km/hr; reports to o Ensuring that only licensed drivers are employed by the Project; regulatory o Avoiding peak hours where possible; authorities/lenders o Regular maintenance of vehicles and use of manufacturer approved parts to as required. minimize potentially serious accidents caused by equipment malfunction or premature failure; o Driving and road safety procedure will be developed; and o Coordination with emergency responders to ensure that appropriate first aid is provided in the event of accidents.
10.1 Occupational General Health and safety of The Contractor will prepare and implement a Health and Safety Plan prior to Plant EHS Team Designated Team comprising Relevant Records Plant Health and decommissioning workforce commencing work. This plan will include method statements for work activities, plant and of representation from EHS maintained. Decommissioning
THIS DOCUMENT IS THE PROPERTY OF SEMBCORP INDUSTRIES LTD. NEITHER WHOLE NOR ANY PART OF THE DOCUMENT SHALL BE DISCLOSED, PRODUCED, TRANSMITTED IN ANY FORM OR BY ANY MEANS WITHOUT THE PRIOR WRITTEN CONSENT OF THE OWNER. Page 15 of 20 MYINGYAN CCGT POWER PLANT Draft Decommissioning Management Plan
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S. Project Stage/ Project Activity and Potential Impacts Proposed Mitigation and Management Measures Responsibility Responsibility for Reporting Mitigation Cost No. Affected affected area for Mitigation supervision of mitigation Requirements Source Aspect Implementation implementation Safety activities utilisation, decommissioning sequence and safety arrangements. Decommissioning and Decommissioning Monthly internal Cost o Measures will be implemented to reduce the likelihood and consequence of the reports to top potential hazards. This shall include (but not limited to) the following hazards: management and o falling from height; reports to regulatory o falling into water; authorities/lenders o entanglement with machinery; as required. o tripping over permanent obstacles or temporary obstructions; o slipping on greasy walkways; o falling objects; o asphyxiation; o explosion; o contact with dangerous substances; o electric shock; o variable weather conditions; o lifting excessive weights; and o traffic operations.
A Permit to Enter system will be established to ensure that only authorised persons gain entry to the site.
Competent and adequately resourced sub-contractors will be used where decommissioning activities are to be sub-contracted.
All persons working on site will be provided information about risks on Site and arrangements will be made for workers to discuss health and safety with the Contractor.
The Contractor will prepare and implement a Health and Safety Plan prior to commencing work. This plan will include method statements for work activities, plant utilisation, decommissioning sequence and safety arrangements.
All workers will be properly informed, consulted and trained on health and safety issues.
Personal Protective Equipment (PPE) shall be worn at all times on the Site. This shall include appropriate safety shoes, safety eyewear, and hard hats. Non-slip or studded boots will be worn to minimize the risk of slips.
Before starting work all the appropriate safety equipment and the first-aid kits will be assembled and checked as being in working order. Breathing apparatus will be tested at regular intervals in the manner specified by the manufacturer.
All lifting equipment and cranes will be tested and inspected regularly. All hoist ways will be guarded.
All scaffolding will be erected and inspected in conformity with the Factories Act (1951) and the appropriate records maintained by the Contractor.
Safety hoops or cages will be provided for ladders with a height in excess of two metres.
When there is a risk of drowning lifebelts shall be provided and it shall be ensured that personnel wear adequate buoyancy equipment or harness and safety lines, and that rescue personnel are present when work is proceeding (near the temporary jetty site).
All breathing apparatus, safety harnesses, life-lines, reviving apparatus and any other equipment provided for use in, or in connection with, entry into Confined Spaces, and for use in emergencies, will be properly maintained and thoroughly examined at least once a month, and after every occasion on which it has been used.
Where sound levels cannot be reduced at the source, suitable hearing protection will be provided when noise levels indicate a Leq of more than 85 dB(A). When hearing
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S. Project Stage/ Project Activity and Potential Impacts Proposed Mitigation and Management Measures Responsibility Responsibility for Reporting Mitigation Cost No. Affected affected area for Mitigation supervision of mitigation Requirements Source Aspect Implementation implementation protection is used, arrangements will be made to ensure the wearers can be warned of other hazards.
The Contractor shall provide appropriate safety barriers with hazard warning signs
attached around all exposed openings and excavations.
10.2 Occupational Labour and working Working The Contractor will comply with applicable national and international legislation at the Plant EHS Team Designated Team comprising Relevant Records Plant Health and conditions conditions time concerning labour and working conditions. and of representation from EHS maintained. Decommissioning
Safety Decommissioning and Decommissioning Monthly internal Cost
Terms of Develop and monitor an internal standard to guide labour practices and apply this to employment supply chain to ensure that no child and/or forced labour will be employed by the reports to top Contractor and its sub-contractors. management and Child/ forced reports to labour regulatory authorities/lenders as required.
10.3 Occupational Monitoring and Daily monitoring and monthly review of near-misses, incidents, occupational Plant EHS Team Designated Team comprising Relevant Records Plant Health and review of accidents/ diseases, dangerous occurrences, accidents at project activity areas and workers and of representation from EHS maintained. Decommissioning Safety incidents due to camp, as per decommissioning phase Health and Safety Plant, which will be Decommissioning and Decommissioning Monthly internal Cost
decommissioning prepared by the Contractor. reports to top © ¦ § ¡ ¢£¤ ¥¤£¤¦§¨ management and health reports to regulatory authorities/lenders as required.
11.1 Community Influx of workers Increased prevalence Training for all workers on the transmission routes and common symptoms of Plant EHS Team Designated Team comprising Relevant Records Plant Health of disease communicable diseases. This can help reduce the potential for workers to and of representation from EHS maintained. Decommissioning unknowingly transmit communicable diseases. This may also help to increase Decommissioning and Decommissioning Monthly internal Cost
knowledge within Project area villages e.g. through the training of workers that have reports to top been sourced from the local villages. management and reports to Establish amenities at the camp to help minimize the interaction between the workforce (particularly temporary workers) and local villagers. This includes regulatory recreation facilities and health care infrastructure. authorities/lenders as required.
Establish a workforce code of conduct. Include in the code specific measures that target anti-social behaviour, such as becoming involved with commercial sex workers.
Undertake pre-employment screening to ensure fitness for work. It is important that the pre-screening process does not result in discrimination, but instead is used as a tool to minimize the transmission of communicable diseases.
Vector management procedures, including measures to reduce the presence of vector habitat and consideration of whether pesticides will be utilized to reduce the presence of vectors onsite.
Provision of onsite health care, to ensure that medical attention can be sought should a worker present with the symptoms of a communicable disease and facilities for workers to reside if ill. This will also help reduce the potential pressure on local health care facilities.
Emergency management procedures should a health issue escalate and require a rapid response.
11.2 Community Decommissioning Community Develop and implement a traffic management plan. The plan should set out the Plant EHS Team Designated Team comprising Relevant Records Plant Safety and activities, material disturbance and measures to minimize the risks associated with transporting materials, goods, and and of representation from EHS maintained. Decommissioning Security transportation potential safety hazard workers to and from site. This includes fatigue management, busing workers to and Decommissioning and Decommissioning Monthly internal Cost due to road traffic from the Project site, and ensuring all employees observe recommended speed reports to top limits. management and reports to Ensure all employees complete training prior to driving any Project vehicle. The
regulatory
£¦ £ £ ¦ £ ¡¤ ¤ § ¦ £¡¤ ¦ £ £ ¦ ¦ ¦ ¦ § ¦ ¢ authorities/lenders
THIS DOCUMENT IS THE PROPERTY OF SEMBCORP INDUSTRIES LTD. NEITHER WHOLE NOR ANY PART OF THE DOCUMENT SHALL BE DISCLOSED, PRODUCED, TRANSMITTED IN ANY FORM OR BY ANY MEANS WITHOUT THE PRIOR WRITTEN CONSENT OF THE OWNER. Page 17 of 20 MYINGYAN CCGT POWER PLANT Draft Decommissioning Management Plan
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S. Project Stage/ Project Activity and Potential Impacts Proposed Mitigation and Management Measures Responsibility Responsibility for Reporting Mitigation Cost No. Affected affected area for Mitigation supervision of mitigation Requirements Source Aspect Implementation implementation
Explore opportunities to work with local stakeholders to increase awareness within as required. local villages about the hazards associated with traffic.
Provide appropriate training for security personnel and monitor implementation of the training over time (to minimize any potential use of excessive force).
Develop and implement waste management plan. The plan should set out procedures for appropriately managing and disposing of hazardous materials and other forms of waste.
11.3 Community Monitoring and review of community disturbance and potential safety hazard due to Plant EHS Team Designated Team comprising Relevant Records Plant Safety and road traffic as well as accidents, incidents and complaints around the project activity and of representation from EHS maintained. Decommissioning Security areas, based on occurrence. Decommissioning and Decommissioning Monthly internal Cost reports to top management and reports to regulatory authorities/lenders as required.
12.1 Community Develop and implement a social management plan to track in-migration. Plant EHS Team Designated Team comprising Relevant Records Plant
Infrastructure and of representation from EHS maintained. Decommissioning ¡ Provide appropriate amenities at the workforce accommodation camp e.g. and services recreational opportunities. This will help reduce the need for workers to utilize local Decommissioning and Decommissioning Monthly internal Cost infrastructure and services; reports to top management and
Develop and implement a traffic management plan to minimize the impact reports to experienced by road users as a result of the Project. regulatory
Develop and implement a community health management plan and an occupational authorities/lenders health and safety plan. These plans will ensure that appropriate and adequate health as required. care services are provided on site and at the accommodation camp to address/ manage worker illnesses and injuries.
12.2 Employment Decommissioning Employment Develop and implement a local content plan. The plan should establish measures to Plant EHS Team Designated Team comprising Relevant Records Plant and Economy activities Opportunities and facilitate local recruitment and procurement. This should include targets so that and of representation from EHS maintained. Decommissioning opportunities for local performance can be tracked and evaluated. Development of the plan should involve Decommissioning and Decommissioning Monthly internal Cost business consultation with relevant stakeholders, including government authorities and local reports to top villagers. management and reports to Review opportunities to establish a skills training program with an aim of training interested local villagers . regulatory authorities/lenders
Inform local villagers of job opportunities in a timely manner. Ensure that the as required. advertising process is locally and culturally appropriate.
Inform local businesses of contracting opportunities in a timely manner. Ensure that
the process is locally and culturally appropriate.
¢£ ¢ ¤¥ ¦§£ ¨¥©¢ Develop an internal standard to guide labour practices, and apply this supply chain. This should include development and implementation of an internal grievance mechanism for direct employees and contractors, and ongoing monitoring to ensure that the standard is consistently implemented across the Project.
13.1 Social Network Decommissioning Overall social impacts Develop and implement a workforce code of conduct that addresses issues such as Plant EHS Team Designated Team comprising Relevant Records Plant activities anti-social behaviour and drug and alcohol consumption. and of representation from EHS maintained. Decommissioning
Decommissioning and Decommissioning Monthly internal Cost ¡ Provide an introduction for workers moving into the area (even temporarily) so that workers understand local culture and customs. reports to top management and
Develop and implement a local content plan. A key aspect should be providing local reports to employment opportunities (to reduce the number of workers being brought into the regulatory local area from outside). authorities/lenders as required.
14.1 Physical Decommissioning Damage to cultural Develop a chance find procedure for managing cultural heritage, and implement this Plant EHS Team Designated Team comprising Relevant Records Plant Cultural activities resources procedure if any cultural heritage is discovered during decommissioning. and of representation from EHS maintained. Decommissioning
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S. Project Stage/ Project Activity and Potential Impacts Proposed Mitigation and Management Measures Responsibility Responsibility for Reporting Mitigation Cost No. Affected affected area for Mitigation supervision of mitigation Requirements Source Aspect Implementation implementation Resources Decommissioning and Decommissioning Monthly internal Cost reports to top management and reports to regulatory authorities/lenders as required.
15.1 Grievance Public concerns Continuous monitoring and review of complaints received from neighbouring Plant EHS Team Designated Team comprising Relevant Records Plant communities around the Project activity areas as per the grievance redress and of representation from EHS maintained. Decommissioning mechanism. Decommissioning and Decommissioning Monthly internal Cost reports to top management and reports to regulatory authorities/lenders as required.
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Annex G
Thermal Discharge Modelling Study REPORT
Sembcorp Utilities Pte. Ltd.
225MW Combined Cycle Gas Turbine Power Plant and Project Facilities at Myingyan, Myanmar
CORMIX Near-field Dispersion Modelling Study for Cooling Water Discharge
July 2016
Environmental Resources Management Hong Kong 16/F Berkshire House 25 Westlands Road Quarry Bay, Hong Kong Telephone (852) 2271 3000 Facsimile (852) 2723 5660 www.erm.com
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CONTENTS
1 INTRODUCTION
1.1 PROJECT BACKGROUND 1 1.2 OBJECTIVES OF THIS STUDY 3 1.3 ABOUT THE CORMIX NEARFIELD MODEL 3 1.4 GENERAL STUDY APPROACH 4 1.5 STRUCTURE OF THIS DOCUMENT 4
2 CORMIX MODEL SETUP
2.1 WATER QUALITY ASSESSMENT CRITERIA 6 2.2 COOLING WATER CHARACTERISTICS 7 2.3 DISCHARGE STRUCTURE 7 2.4 AMBIENT CONDITIONS 7 2.4.1 AMBIENT WATER DENSITY 7 2.4.2 AMBIENT CURRENT VELOCITY 7 2.4.3 WIND SPEED 7 2.5 STUDY SCENARIOS 7 2.6 SUMMARY OF CORMIX INPUT DATA 8
3 CORMIX MODELLING RESULTS
4 CONCLUSIONS
LIST OF FIGURES
FIGURE 1.1 LOCATION MAP OF CCGT PROJECT AND LAYOUT OF COOLING WATER DISCHARGE PIPELINE 2
FIGURE 3.1 EXAMPLE OF PLUME IN VERTICAL PROFILE VIEW ILLUSTRATIVE OF PLUME TRAJECTORY IN SCENARIOS 1, 3 AND 5 11
FIGURE 3.2 EXAMPLE OF PLUME TRAJECTORY IN VERTICAL PROFILE VIEW FOR SCENARIO 2 AND 3 11
FIGURE 3.3 EXCESS TEMPERATURE PROFILES - SCENARIO 1 12
FIGURE 3.4 EXCESS TEMPERATURE PROFILES - SCENARIO 2 12
FIGURE 3.5 EXCESS TEMPERATURE PROFILES - SCENARIO 3 12
FIGURE 3.6 EXCESS TEMPERATURE PROFILES - SCENARIO 4 13
FIGURE 3.7 EXCESS TEMPERATURE PROFILES - SCENARIO 5 13
FIGURE 3.8 EXCESS TEMPERATURE PROFILES - SCENARIO 5 14 LIST OF TABLES
TABLE 2.1 SUMMARY OF MODELLING SCENARIOS 8
TABLE 2.2 CORMIX INPUT DATA 8
TABLE 3.1 CORMIX MODEL RESULTS SHOWING DISTANCE FROM DISCHARGE POINT TO ACHIEVE <3°C TEMPERATURE CRITERION (1) AND THERMAL PLUME DIMENSIONS. 10
EXECUTIVE SUMMARY
Sembcorp Utilities Pte. Ltd. (Sembcorp) has been selected by the Ministry of Electric Power (MOEP) of the Government of Myanmar (GOM) as a private sector Independent Power Producer (IPP) to develop a 225MW Combined Cycle Gas Turbine (CCGT) power plant and its facilities (hereinafter the
¡ ¢£ ¤¥¦§¨© on a Build, Operate and Transfer (BOT) basis in Myingyan Township, in the Mandalay region in Myanmar.
Following an engineering design change, cooling water from the facility is routed directly to the Ayeyarwady River via a ~14 km pipeline. Regarding this design change, Environmental Resources Management (ERM) previously supplied information to advise that very dilutions would be needed for the temperature of the proposed discharge to return to within 3 °C of ambient river temperature such that the mixing zone for the cooling water discharge was expected to be small. Nevertheless, Sembcorp received advice from lenders that quantitative modelling was required.
As such, Sembcorp commissioned Environmental Resources Management (ERM) to conduct CORMIX near-field dispersion modelling to quantitatively examine the extent of the mixing zone of cooling water discharge and therefore ability to meet IFC EHS Guideline and Myanmar Environmental Quality (Emissions) Guideline temperature assessment criteria.
Cooling water discharge has been modelled using the USEPA-supported CORMIX application for a discharge rate of 100 m3/hour (0.028 m3/s) with varying temperature of 28.2 °C, 17 °C and 42 °C through one outfall (12 inch in diameter), for two (2) seasons. In the model, the discharge port of the outfall is located 1 m above river bed and points upwards 45° relative to the river bed.
Overall, the model predicted that the difference between the thermal plume and ambient river water temperature will be less than 3°C within a very short distance (0.27 m to 1.4 m) downstream of the discharge location. Hence, the model predicted the mixing zone for the cooling water discharge is of a very
small extent, and thus the planned discharge is considered to meet EHS General Guidelines and Myanmar Environmental Quality (Emissions) Guideline.
ENVIRONMENTAL RESOURCES MANAGEMENT SEMBCORP UTILITIES PTE. LTD. 0284993-SEMBCORP MYINGYAN CORMIX STUDY REPORT JULY 2016 i
1 INTRODUCTION
1.1 PROJECT BACKGROUND
Sembcorp Utilities Pte. Ltd. (Sembcorp) has been selected by the Ministry of Electric Power (MOEP) of the Government of Myanmar (GOM) as a private sector Independent Power Producer (IPP) to develop a 225MW Combined Cycle Gas Turbine (CCGT) power plant and its facilities (hereinafter the
¡ ¢£ ¤¥¦§ ¨© on a Build, Operate and Transfer (BOT) basis in Myingyan Township, in the Mandalay region in Myanmar. The Project is comprised of a:
225MW CCGT Power Plant;
Gas Supply Pipeline;
230kV Overhead Transmission Line; and
Water Supply Pipeline, Wastewater Discharge Pipeline and Water Intake Pumping Station
Following a design change, cooling water will be discharged into the Ayeyarwady River via a ~14 km pipeline. The locations of the Project and the layout of discharge pipeline are presented in Figure 1.1.
Given that cooling water discharge rate (100 m3/hr, approximately 0.028 m3/s) is considerably smaller than the flow rate of Ayeyarwady River (64 m3/s to 660 m3/s)(1), ERM previously advised the mixing zone was expected to be small with respect to temperature criteria provided in the Environmental, Health and Safety General Guidelines (EHS General Guidelines) (2) and Myanmar Environmental Quality (Emissions) Guidelines. Nevertheless, Sembcorp received advice from lenders that quantitative dispersion modelling was required .
(1) ERM, 2016. Environmental and Social Impact Assessment for the proposed 225MW Combined Cycle Gas Turbine (CCGT) power plant and its facilities in Myingyan Township, Mandalay Region, Myanmar. SembCorp Utilities Pte. Ltd.
(2) International Finance Corporation (2007). Environmental, Health, and Safety General Guidelines.
ENVIRONMENTAL RESOURCES MANAGEMENT SEMBCORP UTILITIES PTE. LTD. 0284993-SEMBCORP MYINGYAN CORMIX STUDY REPORT JULY 2016 1
Figure 1.1 Location Map of CCGT Project and Layout of Cooling Water Discharge Pipeline
ENVIRONMENTAL RESOURCES MANAGEMENT SEMBCORP UTILITIES PTE. LTD. 0284993-SEMBCORP MYINGYAN CORMIX STUDY REPORT JULY 2016 2
Sembcorp therefore commissioned Environmental Resources Management (ERM) to conduct near-field dispersion modelling for the discharge of cooling water into the Ayeyarwaddy River from the proposed power plant.
1.2 OBJECTIVES OF THIS STUDY
The objective of the cooling water discharge modelling is to determine whether the effluent plume from the proposed Project complies with temperature criteria provided in the IFC EHS General Guidelines and Myanmar Environmental Quality (Emissions) Guidelines.
The following tasks have been conducted for this modelling study in order to meet the above study objective:
1. Collected data for discharge pipeline design, effluent characteristic, river ambient condition and wind speed for the discharge site; 2. Conducted near field dispersion modelling using Cornell Mixing Zone
Expert System (CORMIX 9.0); § 3. Provided an evaluation of the dilution of the ¡¢£¤¥ ¦ emperature with reference to temperature criteria of IFC EHS General Guidelines and Myanmar Environmental Quality (Emissions) Guidelines; 4. Provided visual representations (i.e. excess temperature profile) of modelled trajectories; and 5. Provided a technical report describing the modelling effort, including details of data sources, assumptions, methods, results, and conclusions.
The scope of the modelling is limited to the prediction of the extent and the temperature of discharged cooling water (thermal plume) from the discharge pipeline under the influence of discharge pipeline structure, effluent characteristics, and/or river ambient conditions by using available information and assumptions.
1.3 ABOUT THE CORMIX NEARFIELD MODEL
Cornell Mixing Zone Expert System (CORMIX) is a USEPA-supported mixing zone model and decision support system for environmental impact assessment of regulatory mixing zones resulting from continuous point source discharges. CORMIX is widely adopted for modelling of effluent discharge to
marine and river environments. Its elaborate ability in simulation near field
¨ © ¤ ¡ ¦¤ § § ¤ ¢§¡¡ ¤ ¡¢¤§ ¡¢£¤ ¤ © ¢ £ ¤¦ ©§¥¦ ¤ § ¤ £ ¦§ common candidates for simulating near field dispersion of effluent plume from outfalls.
The CORMIX model is used to estimate the extent and dimensions of the plume. CORMIX is primarily a near-field model, i.e., it applies to the region adjacent to the discharge structure in which the wastewater plume is
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recognisable as separate from the ambient water and its trajectory is dominated by the discharge rate, effluent density, and geometry of the discharge structure. As such, it is ideal for defining mixing zone dimensions since this near-field region corresponds to the regulatory definition of a mixing zone.
There are several limitations to the current work which are typical for applications of CORMIX. It assumes steady-state conditions and unidirectional, uniform flow in the receiving waterbody. CORMIX has
simplified geometric capabilities. It assumes an idealized waterbody with
¡¢£¤¥ ¦ ¡ ¦§ ¢¨©¤ ¨ £ £ ¤ § ¢ § ¡¡§ ¥¨ ¨¢£© ¡¦¨ ¢¤¨ ¢ ¨ ¤¢§ ¨ ¡ spatially and temporal variability will not be included in CORMIX, making CORMIX predictions conservative.
Inputs to the model consists of
key dimensions of the discharge structure;
characteristics of the effluent; and
properties of the ambient waterbody.
1.4 GENERAL STUDY APPROACH
Key dimensions of the discharge structure as well as the characteristics of the cooling water effluent for the CORMIX application were made available from Sembcorp. Available ambient current flow data was collected from baseline chapter of ESIA.
The model was set up and run to examine the dispersion of discharged cooling water into idealised receiving water (i.e. straight shoreline and a uniform bottom). Outputs from CORMIX include centreline trajectories and dilution rates. Dilution rates perpendicular to the centreline were calculated as Gaussian distributions from the centreline (maximum) values.
The remainder of this report provides details on the setup of the CORMIX model, describes and identifies the source of the input data, and presents and discusses the results of the simulations.
1.5 STRUCTURE OF THIS DOCUMENT
The structure of this document is as follows:
Section 1: Introduction
Summarises the Project background, objectives and the scope of the Study.
Section 2: CORMIX Setup
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Presents an overview of the modelling techniques of near-field modelling of the cooling water plume. The section also presents a broad description of the setup of CORMIX modelling.
Section 3: CORMIX Modelling Results
Presents the results and interpretation of the near-field modelling of the cooling water discharge.
Section 4: Conclusions and Discussions
Summarises the key findings and limitations of the Study.
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2 CORMIX MODEL SETUP
Key dimensions of the discharge structure as well as the characteristics of the effluent for the CORMIX application were made available from Sembcorp. Available ambient current flow data was collected from baseline chapter of ESIA report. ERM requested data inputs and reviewed these documents with respect to CORMIX requirements and summarized the input values and data sources for confirmation by Sembcorp.
2.1 WATER QUALITY ASSESSMENT CRITERIA
The CORMIX modelling exercise is conducted to assess whether the thermal
plume is able to meet ¡¢£¤ Environmental, Health and Safety General Guidelines(1)(2) (EHS guidelines) and Myanmar Environmental Quality (Emissions)
Guidelines, in terms of: ¦ ¥ Temperature EHS General Guidelines state temperature of wastewater
prior to discharge does not result in an increase greater than 3§ C of ambient temperature at the edge of a scientifically established mixing
zone(3). The EHS Guidelines for Thermal Power state elevated temperature § areas due to discharge of once-through cooling water (eg 1 § C above, 2 C
above and 3§ C above ambient water temperature) should be minimized by adjusting intake and outfall design through the project specific EA depending on the sensitive aquatic ecosystems around the discharge point(4). Myanmar Environmental Quality (Emissions) Guidelines stipulate
<3§ C increase due to discharge of once through cooling water.
With reference to these EHS General Guidelines and Myanmar Environmental Quality (Emissions) Guidelines, a 3°C maximum temperature excess above ambient at the edge of the mixing zone is adopted as assessment criterion to investigate the thermal plume. Where modelled scenarios for dicharges from the ~14 km pipeline result in discharge temperatures lower than ambient river temperature, assessment criterion of within 3°C of ambient is adopted.
( 1 ) International Finance Corporation (2007). Environmental, Health and Safety Guidelines: Environmental, Wastewater and Ambient Water Quality
( 2 ) International Finance Corporation (2008) Environmental, Health and Safety Guidelines for Thermal Power Plants.
(3) International Finance Corporation (2007). Op.cit.
(4) International Finance Corporation (2008). Op. cit.
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2.2 COOLING WATER CHARACTERISTICS
The designed flow rate of cooling water discharge is 100 m3/hour (0.028 m3/s). The model assumes the discharge is continuous during the simulation runs.
Sembcorp provided the end-of-pipe cooling water temperature under different air temperature conditions to account for water temperature changes that occur in the pipe. The end-of-pipe cooling water temperatures are 28.2 °C, 17.0 °C and 42.0 °C. Salinity of the cooling water are between 1.0 ppt and 1.5 ppt according to Sembcorp. An average value of 1.25 ppt was adopted in this CORMIX modelling exercise. CORMIX calculated the cooling water density internally based on the temperature and salinity input.
2.3 DISCHARGE STRUCTURE
The outfall is a single discharge pipe with a 12-inch opening. In the model, the discharge pipe points 45° upward from horizontal plane (river bed) and the opening of the outfall is located 1 m above river bed.
2.4 AMBIENT CONDITIONS
2.4.1 Ambient Water Density
In the model, the salinity of the receiving river water was set as freshwater The average ambient river water temperature is 22.4 °C in the dry season and 29.4 °C in the wet season based on baseline survey results for ESIA. Based on these inputs, river water density was calculated within the model.
2.4.2 Ambient Current Velocity
The ESIA report (Table 5.19 of the document) provides measured river flow velocities from December 2014 to June 2015. Based on these records, the average flow velocity was 0.05 m/s in the dry season and 0.10 m/s in the wet season.
2.4.3 Wind Speed
The ESIA report (Table 5.4 of the document) provides wind data collected for 24 hours continuously over a seven day period from July 2014 to June 2015 in the Project area. The average wind speed in the dry season was 0.41 m/s, and 1.57 m/s in the wet season.
2.5 STUDY SCENARIOS
The cooling water plume was studied by varying cooling water temperature and seasons. A total of five (5) scenarios were modelled as shown in Table 2.1.
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Table 2.1 Summary of Modelling Scenarios
Cooling Water Temperature Scenario ID Season (°C)
1* Dry 28.2
2 Dry 17.0
3 Wet 17.0
4 Dry 42.0
8 Wet 42.0 Note: *: No wet season scenario was modelled. Cooling water temperature discharge at a temperature of 28.2 °C is already within 3°C of ambient river water temperature, which is 29.4 °C in the wet season.
2.6 SUMMARY OF CORMIX INPUT DATA
The data used by the model is summarized in Table 2.2.
Table 2.2 CORMIX Input Data
Parameter Value
Effluent Characteristics
Flow Rate (m3/hour) 100
Discharge Water Salinity (ppt) 1.25
Discharge Temperature (°C) 28.2 °C, 17.0 °C and 42.0 °C.
Discharge Density (kg/m3) Internally calculated by CORMIX
Model Mode All effluent as conservative tracers
Discharge Structure
Port Type Subsurface
Number of Opening 1
Port Diameter (inch) 12
Discharge Location (m) 1 m above river bed
Configuration of Ports or Nozzles SINGLE port (holes)
Option
¦¨©§¡ ¡¢ £¤¥¦§ 45 (upward to horizontal plane)
Ambient Condition
Region of Interest Mixing zone of 100 m
Ambient Density Profile Uniform
Dry Season: 22.4; Ambient Water Temperature (°C) Wet Season: 29.4
Ambient Water Type Freshwater
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Parameter Value
Ambient Water Density (kg/m3) Internally calculated by CORMIX
Ambient Circulation Steady
Dry Season: 0.05; Ambient Current Velocity (m/s) Wet Season: 0.10.
Water Body Type Bounded, 410 m
Dry Season: 0.41; Wind Speed (m/s) Wet Season: 1.57
Dry Season: 5.7; Average water depth (m) Wet Season: 8.0
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3 CORMIX MODELLING RESULTS
CORMIX simulations were carried out for each of the scenarios presented in Table 2.1. For each scenario, the model outputs were analysed to quantify the downstream distance at which the 3°C assessment criterion (refer Section 2.1) is met. The dimensions of the thermal plume (i.e. thickness and width) at the point where the where the 3°C assessment criterion is met, is also provided. The modelling results are summarized in Table 3.1.
Table 3.1 CORMIX Model Results showing Distance from Discharge point to achieve <3°C Temperature Criterion (1) and Thermal Plume Dimensions.
Scenario Seasons Ambient Effluent Distance Width Cumulative Dilution Temperature Temperature from of Travel Factor (°C) (°C) Discharge Plume Time(2) (s) Point (m) (m)
Scenario Dry 22.4 28.2 0.27 0.64 ~ 4 1.9 1
Scenario Dry 22.4 17.0 (3) 0.33 0.72 ~ 5 1.8 2
Scenario Wet 29.4 17.0 (3) 1.40 0.92 ~ 11 4.1 3
Scenario Dry 22.4 42.0 1.00 1.10 ~ 10 6.5 4
Scenario Wet 29.4 42.0 0.96 0.88 ~ 6 4.2 8
(1) EHS General Guidelines and Myanmar Environmental Quality (Emissions) Guidelines : excess temperature < 3°C; (2) Total travel time for a particle to travel along the centerline trajectory from the
source to the given centerline location¢ (3) In Scenario 2 and 3, excess temperature is negative (effluent temperature - ambient temperature) but CORMIX only allows positive excess temperature in the model setup. To overcome this limitation in the model, absolute temperature difference was used to continue the modelling. Temperature of the cooling water was set as conservative pollutant and the results represent the physical dilution process of excess temperature.
For all of the different scenarios, the model indicated that the 3°C assessment criterion will be achieved within a very short distance, namely between 0.27 m and 1.40 m downstream from discharge location.
In Scenarios 1, 3 and 5, the thermal plumes tend to move upwards until reaching water surface due to buoyancy effects since the cooling water has a higher temperature and lower density than the ambient receiving water in the river. A CORMIX-generated plot showing a side view of the plume for Scenario 1, which is also illustrative of Scenarios 1, 3 and 5, is provided in Figure 3.1.
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Figure 3.1 Example of Plume in Vertical Profile View illustrative of Plume Trajectory in Scenarios 1, 3 and 5
Note: The vertical green line indicates the point at the <3°C temperature criterion is met.
In Scenarios 2 and 4, the thermal plume can be seen to move upwards under
jet momentum (discharge port points upwards 45¡ relative to river bed) and then eventually moving downwards in the water column because of its lower temperature and hence higher effluent density compared to ambient river water. Figure 3.2 presents the side view of the plume trajectory for Scenario 2 and 3.
Figure 3.2 Example of Plume Trajectory in Vertical Profile View for Scenario 2 and 3
Note: The vertical green line indicates the point at the <3°C temperature criterion is met.
The excess temperature dilution as the cooling water plume travels downstream for a distance up to 100 m is provided in Figure 3.3 to Figure 3.7 for Scenarios 1-5 respectively. As shown in these graphs, the model predicts significant dilution of thermal plume within up to the first 5 m downstream from the discharge location. The model shows temperature differences would be virtually imperceptible within a very short distance.
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Figure 3.8 Excess Temperature Profile - Scenario 5
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4 CONCLUSIONS
Cooling water discharge from the pipeline outfall into the Ayeyarwady River have been simulated using the CORMIX near-field modelling application based on a discharge rate of 100 m3/hour (0.028 m3/s) with temperature of 28.2 °C, 17 °C or 42 °C through one outfall (12 inch in diameter), for two (2) seasons. In the model, the opening of the outfall is located 1 m above river bed and points upwards 45° relative to the river bed.
Overall, the model predicted that the difference between the thermal plume and ambient river water temperature will be less than 3°C within a very short distance (0.27 m to 1.4 m) downstream of the discharge location. Hence, the
model predicted the mixing zone for the cooling water discharge is of a very ¥¦§ small extent, and thus the planned discharge is considered to meet ¡ ¢£¤ General Guidelines and Myanmar Environmental Quality (Emissions) Guidelines.
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Annex H
Stakeholder Engagement Presentations Stakeholder Engagement Meeting July 2015
The world’s leading sustainability consultancy Why are we here?
¡ Sembcorp has been selected by the Ministry of Electric Power (MOEP) to develop a 225MW Combined Cycle Gas Turbine (CCGT) power plant in Myingyan Township, in the Mandalay region in Myanmar.
¡ Environmental Resources Management (ERM), with Resources Environment Myanmar (REM), to undertake an Environmental and Social Impact Assessment (ESIA).
¡ The “ESIA” will be undertaken to understand potential environmental and social impacts and opportunities in accordance with international standards.
¡ Purpose of the meeting is to provide an overview of the Project and better understand local views of the Project .
2 The world’s leading sustainability consultancy Who is Sembcorp?
¡ Sembcorp Industries is a leading energy, water and marine group with operations across six continents worldwide.
¡ With facilities of over 8,200 megawatts of gross power capacity and over nine million cubic metres of water per day in operation and under development, Sembcorp is a trusted provider of essential energy and water solutions to both industrial and municipal customers.
¡ The proposed Project is the first Independent Power Producer (IPP) Project in Myanmar.
The world’s leading sustainability consultancy Utilities Global Footprint
4 The world’s leading sustainability consultancy Local Context
¡ It is recognized that demand for energy will grow, particularly as the area develops. However, demand will exceed current supply. The proposed Project will help respond to this gap between demand and supply.
5 The world’s leading sustainability consultancy Source: David Dapice, 2012 Project Location & Project Components
Project Boundary Power Plant
Existing Gas Receiving Station
New Gas Receiving Station Gas Pipeline Water Pipeline
230 kV Transmission Line 6 Myingyan Steel Mill Substation The world’s leading sustainability consultancy Project Location & Project Components
Project Boundary Power Plant
Existing Gas Receiving Station
New Gas Receiving Station Gas Pipeline Water Pipeline
Transmission Line 7 Myingyan Steel Mill Substation The world’s leading sustainability consultancy Overview of the project
2
2
1
8 The world’s leading sustainability consultancy Impact Assessment and Management Process
Baseline Screening Impact Management data Approval and scoping assessment plan collection
1nd stakeholder 2nd stakeholder meeting meeting
9 The world’s leading sustainability consultancy Project Schedule
¡ Completion of ESIA: Third Quarter of 2015
¡ Start of Construction: First Quarter of 2016
¡ Start of Operation: First Quarter of 2018
10 The world’s leading sustainability consultancy Schedule for Township and Village Visits
Date Day Activity 15th July Wednesday Myingyan GAD meeting (Township) 16th July Thursday Taungthar GAD meeting (Township) Hnan Ywa Village - Taungtha Township 17th July Friday Nyaung Kan Village - Taungtha Township Hpet Taw Village - Taungtha Township 18th July Saturday Sa Khar Village - Myingyan Township Thien Village - Myingyan Township 19th July Sunday Gyoke Pin - Myingyan Township Tha Pyay Thar - Myingyan Township
¡ The township and villages are proposed for the stakeholder consultation as they are nearby the Project area.
11 The world’s leading sustainability consultancy How to contact us
Comments, concerns, queries and questions on the above and the Project in general are welcomed. Contact details for queries. Resource and Environment Myanmar Co., Ltd. B702 Delta Plaza, Shwegondaing Rd., Bahan Tsp., Yangon, Republic of the Union of Myanmar Contact phone number: 09-73013448
12 The world’s leading sustainability consultancy Impact Assessment Overview August 2015
The world’s leading sustainability consultancy Impact Assessment Process
To better understand the likely impacts associated with the Project an environmental and social impact assessment is being completed. The assessment is being completed in line with international standards.
Baseline Impact Management Screening/ Scoping Reporting studies assessment measures
Stakeholder Stakeholder Stakeholder engagement engagement engagement (July) (August) (September)
2 The world’s leading sustainability consultancy Impact Assessment Process
Baseline Impact Management Screening/ Scoping Reporting studies assessment measures