Eraring - EPA Licence 1429 Rocky Point Rd, NSW 2264

Environmental Monitoring Data December 2020 Unit 1A Boiler Continuous Emission Monitoring Summary EPA Identification no.7 - Air emissions monitoring, Boiler 1 stack discharge to air Unit 1A Out of Service 31 December 2020

NOX Particulates SOX

3 ppm (7% O2) mg/m ppm (7% O2)

Daily Max Min Daily Max Min Daily Max Min Ave Hourly Hourly Ave Hourly Hourly Ave Hourly Hourly

1 December 123 151 100 17.8 28.6 8.4 235 260 215 2 December 121 132 111 19.8 29.2 13.5 232 241 197 3 December 122 134 113 18.7 22.4 16.1 226 247 197 4 December 137 167 124 15.4 18.3 8.0 209 255 180 5 December 128 161 110 18.9 23.7 10.3 241 259 195 6 December 130 143 112 24.9 29.7 19.5 229 265 204 7 December 136 171 120 22.3 25.7 17.0 210 232 199 8 December 126 141 117 20.2 25.4 15.0 223 264 191 9 December 129 144 110 19.2 27.4 14.7 195 236 176 10 December 127 168 107 20.7 28.8 11.9 212 239 172 11 December 141 154 124 22.7 30.3 15.1 218 239 188 12 December 144 169 123 20.3 23.7 15.4 219 236 188 13 December 139 168 110 21.3 25.0 14.4 221 251 199 14 December 153 174 134 17.7 28.3 10.8 217 244 200 15 December 148 175 101 29.6 38.0 20.8 177 235 158 16 December 149 163 138 29.4 43.3 21.1 180 188 171 17 December 165 181 129 16.0 31.2 4.5 208 237 172 18 December 161 179 129 23.8 37.5 12.9 215 232 175 19 December 157 176 129 23.6 31.6 16.7 219 264 182 20 December 144 174 126 27.8 38.9 19.3 216 243 177 21 December 155 167 127 26.4 39.0 18.8 240 290 199 22 December 146 173 130 18.9 38.6 10.8 249 282 218 23 December 146 172 122 13.2 21.9 5.7 211 289 172 24 December 125 153 110 17.8 24.7 12.6 237 262 194 25 December 120 135 107 23.1 28.4 19.1 184 198 165

26 December 128 159 110 21.2 29.8 14.9 189 224 148

27 December 129 154 106 22.6 31.7 12.4 182 208 147 28 December 120 131 106 22.4 37.8 13.4 225 240 203 29 December 139 233 125 29.2 35.1 25.6 201 241 135 30 December 135 140 129 28.3 38.3 17.1 214 230 181 31 December ------

EPA Licence 1429 - Environmental Monitoring Data December 2020 Page 2 of 25 Unit 1B Boiler Continuous Emission Monitoring Summary EPA Identification no.8 - Air emissions monitoring, Boiler 1 stack discharge to air Unit 1B Out of Service 31 December 2020

NOX Particulates SOX

3 ppm (7% O2) mg/m ppm (7% O2)

Daily Max Min Daily Max Min Daily Max Min Ave Hourly Hourly Ave Hourly Hourly Ave Hourly Hourly

1 December 125 149 108 9.1 15.4 5.2 241 267 220 2 December 122 129 114 8.4 13.6 7.2 241 251 225 3 December 128 143 114 7.9 10.4 7.3 237 266 200 4 December 138 173 120 7.1 10.4 6.3 209 249 179 5 December 124 153 113 7.8 13.6 6.3 246 274 216 6 December 128 140 116 9.1 18.8 4.2 242 273 217 7 December 136 170 122 8.3 12.5 6.7 211 243 189 8 December 126 136 117 8.4 11.9 6.7 223 262 195 9 December 133 143 121 8.6 12.4 6.7 199 239 176 10 December 129 172 109 11.9 16.5 8.4 224 247 188 11 December 143 159 126 12.2 16.8 7.4 225 232 211 12 December 141 169 124 9.4 12.6 8.4 216 225 202 13 December 141 164 115 10.3 13.8 7.8 219 243 206 14 December 153 181 133 9.6 12.9 7.7 210 239 195 15 December 158 199 127 29.2 38.3 14.0 180 216 150 16 December 149 164 125 12.6 25.8 6.3 180 193 168 17 December 165 185 134 7.6 11.4 4.3 203 225 176 18 December 163 182 129 7.9 11.7 5.5 207 223 198 19 December 158 175 132 11.2 15.7 9.5 221 262 184 20 December 154 188 136 17.8 27.1 10.2 222 244 195 21 December 163 175 141 17.0 34.0 11.2 235 281 201 22 December 150 179 132 13.0 33.8 5.6 249 282 209 23 December 143 174 123 10.3 14.8 8.3 211 295 179 24 December 124 154 112 12.0 15.7 8.2 248 284 198 25 December 124 145 106 14.2 16.6 8.3 197 215 172

26 December 132 158 112 13.4 17.8 8.6 201 226 172

27 December 138 161 113 12.3 17.9 6.6 193 209 175 28 December 126 146 111 13.3 29.2 8.9 244 273 215 29 December 140 148 131 15.8 23.6 10.0 221 262 203 30 December 145 153 134 19.9 40.5 11.0 241 259 219 31 December ------

EPA Licence 1429 - Environmental Monitoring Data December 2020 Page 3 of 25 Unit 2A Boiler Continuous Emission Monitoring Summary EPA Identification no. 9 - Air emissions monitoring, Boiler 2 stack discharge to air NoX unit Out of Service 19-21 December 2020

NOX Particulates SOX

3 ppm (7% O2) mg/m ppm (7% O2)

Daily Max Min Daily Max Min Daily Max Min Ave Hourly Hourly Ave Hourly Hourly Ave Hourly Hourly

1 December 161 195 121 21.1 26.9 16.3 222 240 203 2 December 165 197 140 20.2 21.8 18.5 223 237 201 3 December 183 203 155 20.6 22.9 19.8 217 231 199 4 December 187 210 145 17.7 21.9 15.4 192 218 162 5 December 190 205 162 21.1 23.9 18.5 224 245 205 6 December 167 197 144 21.9 28.3 17.6 220 238 185 7 December 175 195 154 21.5 24.3 18.1 201 221 186 8 December 168 230 151 23.9 30.9 20.1 213 245 109 9 December 176 200 156 24.7 30.2 21.8 188 224 172 10 December 182 210 160 23.4 25.3 22.3 208 224 179 11 December 165 198 134 26.5 29.8 23.2 212 229 193 12 December 159 202 119 25.3 29.4 22.8 211 222 181 13 December 170 199 146 25.4 28.6 23.0 216 229 199 14 December 176 192 150 23.6 29.0 19.5 201 228 183 15 December 128 193 108 24.8 30.6 20.4 164 187 154 16 December 149 171 135 19.8 23.2 15.4 167 185 160 17 December 191 232 147 16.5 20.5 14.3 186 205 164

18 December 170 217 150 17.1 20.1 14.2 194 206 172

19 December - - - 18.8 20.7 17.3 202 229 173 20 December - - - 21.2 25.6 17.4 217 243 178 21 December - - - 20.5 26.4 17.4 242 275 214 22 December 172 192 159 19.3 28.5 15.1 227 267 174 23 December 176 239 111 22.4 25.4 19.1 210 278 171 24 December 153 206 112 22.7 24.3 20.9 210 253 166 25 December 117 127 106 22.3 26.3 20.9 173 194 166 26 December 166 203 103 23.4 26.9 21.1 178 200 155 27 December 171 189 140 21.9 27.3 20.0 168 179 144 28 December 118 132 106 22.4 28.6 20.0 209 228 174 29 December 142 159 121 23.7 29.5 18.6 203 228 183 30 December 166 190 141 21.9 26.4 18.9 218 234 186 31 December 176 215 136 22.3 26.9 18.4 215 251 197

EPA Licence 1429 - Environmental Monitoring Data December 2020 Page 4 of 25 Unit 2B Boiler Continuous Emission Monitoring Summary EPA Identification no. 10 - Air emissions monitoring, Boiler 2 stack discharge to air

NOX Particulates SOX

3 ppm (7% O2) mg/m ppm (7% O2)

Daily Max Min Daily Max Min Daily Max Min Ave Hourly Hourly Ave Hourly Hourly Ave Hourly Hourly

1 December 180 204 158 6.7 10.6 2.3 214 256 197 2 December 179 194 162 8.0 11.6 5.3 210 225 196 3 December 198 216 169 9.7 12.6 6.2 199 216 183 4 December 204 228 170 8.7 11.7 4.4 177 202 156 5 December 199 216 172 9.8 11.7 4.0 203 222 181 6 December 192 212 164 6.8 9.4 4.0 217 239 193 7 December 186 202 174 6.9 9.6 2.2 186 212 167 8 December 168 191 145 8.5 12.1 5.7 203 222 186 9 December 188 203 169 9.3 13.2 5.0 174 202 153 10 December 195 217 172 9.1 12.0 6.7 188 204 159 11 December 198 298 139 11.4 14.9 6.6 210 229 184 12 December 164 183 141 8.2 12.8 5.6 199 220 184 13 December 168 198 141 8.4 12.7 5.5 206 228 190 14 December 171 185 155 9.5 12.3 6.5 185 220 165 15 December 165 181 137 7.1 12.1 2.7 166 185 144 16 December 156 173 145 6.7 10.9 4.9 154 169 147 17 December 190 222 155 5.2 10.1 2.5 175 194 158

18 December 177 215 160 4.9 8.7 2.5 184 192 170

19 December 158 183 125 7.7 10.9 4.7 208 255 184 20 December 168 193 140 5.9 8.8 3.6 215 252 190 21 December 171 184 133 6.3 8.6 3.6 225 250 203 22 December 180 204 160 6.0 8.6 2.5 219 251 184 23 December 184 246 140 8.3 11.6 5.2 215 288 160 24 December 168 198 137 7.3 9.4 5.2 215 273 163 25 December 152 178 124 9.0 11.6 5.4 181 201 171 26 December 206 256 133 10.5 14.5 5.2 186 208 165 27 December 222 261 164 9.0 13.6 3.0 177 194 159 28 December 163 180 137 6.0 7.2 5.1 219 242 191 29 December 175 202 149 7.3 11.3 5.9 206 248 179 30 December 209 235 167 7.4 11.0 4.4 222 252 193 31 December 211 286 181 8.7 13.3 5.6 219 254 188

EPA Licence 1429 - Environmental Monitoring Data December 2020 Page 5 of 25 Unit 3A Boiler Continuous Emission Monitoring Summary

EPA Identification no. 11 - Air emissions monitoring, Boiler 3 stack discharge to air Unit 3A Out of Service 5-14 December 2020

NOX Particulates SOX

3 ppm (7% O2) mg/m ppm (7% O2)

Daily Max Min Daily Max Min Daily Max Min Ave Hourly Hourly Ave Hourly Hourly Ave Hourly Hourly 1 December 134 186 113 15.3 18.9 13.5 220 237 200 2 December 134 172 114 14.1 15.5 13.5 220 229 203 3 December 152 173 126 15.0 17.6 14.5 212 224 186 4 December 141 141 141 14.6 14.6 14.6 189 189 189 5 December ------6 December ------7 December ------8 December ------9 December ------10 December ------11 December ------12 December ------13 December ------14 December ------15 December 165 175 143 21.0 23.7 18.4 177 186 168 16 December 168 223 121 17.8 23.6 15.2 167 175 156 17 December 200 231 157 16.1 19.3 15.2 180 196 163 18 December 196 215 159 16.3 18.1 15.0 193 214 177 19 December 190 213 168 16.4 18.2 16.0 203 249 166 20 December 175 205 153 18.2 21.4 16.2 209 247 181 21 December 194 211 173 19.7 38.4 15.2 225 259 205 22 December 178 206 147 17.9 37.4 13.8 226 262 205 23 December 174 208 147 14.7 15.9 13.8 205 286 166 24 December 149 173 134 15.2 15.8 13.8 214 253 169 25 December 142 157 132 14.1 14.8 13.8 171 186 161 26 December 155 168 141 15.4 15.9 14.8 175 197 157 27 December 141 160 132 15.3 17.9 13.8 172 177 163 28 December 136 153 127 15.0 21.2 13.9 208 229 183 29 December 143 154 123 15.6 19.1 15.0 204 225 190 30 December 142 155 133 16.6 25.5 14.0 210 222 189

31 December 145 180 130 15.0 17.0 14.7 219 239 194

EPA Licence 1429 - Environmental Monitoring Data December 2020 Page 6 of 25 Unit 3B Boiler Continuous Emission Monitoring Summary EPA Identification no. 12 - Air emissions monitoring, Boiler 3 stack discharge to air Unit 3B Out of Service 5-14 December 2020. Particulates Unit Out of Service 15 December 2020

NOX Particulates SOX

3 ppm (7% O2) mg/m ppm (7% O2)

Daily Max Min Daily Max Min Dail Max Min Ave Hourly Hourly Ave Hourly Hourly y Hourly Hourly Av 1 December 120 177 100 19.4 28.8 7.6 192 208 174 2 December 117 141 102 18.6 26.8 8.0 189 198 168 3 December 145 182 102 14.0 21.4 4.8 185 194 168 4 December 141 141 141 19.8 19.8 19.8 169 169 169 5 December - 6 December ------7 December ------8 December ------9 December ------10 December ------11 December ------12 December ------13 December ------14 December ------15 December 200 221 168 - - - 200 207 192 16 December 198 259 141 24.4 35.1 16.9 176 211 156 17 December 219 262 174 18.1 27.6 11.0 178 197 152 18 December 198 224 164 20.2 27.4 12.7 189 208 173 19 December 186 208 162 21.1 27.7 14.4 195 235 158 20 December 176 207 151 27.9 40.8 12.4 202 235 175 21 December 190 202 174 21.0 36.9 10.1 218 251 199 22 December 170 203 141 29.2 43.5 14.7 216 254 196 23 December 172 197 145 22.2 32.3 12.7 197 276 159 24 December 143 178 123 27.8 40.6 16.1 198 239 103 25 December 129 133 123 30.4 36.8 19.2 161 175 146 26 December 143 163 127 30.7 43.9 16.2 164 191 146 27 December 133 163 116 32.2 43.3 19.2 166 176 149 28 December 130 141 117 38.9 53.0 20.0 195 216 173 29 December 127 144 108 17.3 32.7 3.6 184 211 164 30 December 131 174 119 14.4 30.6 2.6 186 203 141 31 December 127 164 112 10.2 15.1 2.7 195 216 168

EPA Licence 1429 - Environmental Monitoring Data December 2020 Page 7 of 25 Unit 4A Boiler Continuous Emission Monitoring Summary EPA Identification no. 13 - Air emissions monitoring, Boiler 4 stack discharge to air

NOX Particulates SOX

3 ppm (7% O2) mg/m ppm (7% O2)

Daily Max Min Daily Max Min Daily Max Min 1 December 146 165 127 7.1 12.5 4.1 210 222 195 2 December 145 165 136 4.6 6.2 4.1 212 228 198 3 December 162 188 145 5.7 7.3 4.2 208 227 187 4 December 177 203 159 6.0 7.1 4.1 180 205 156 5 December 170 193 147 5.6 8.2 4.1 203 223 183 6 December 157 197 131 8.5 10.5 4.5 203 227 185 7 December 161 174 151 6.9 7.5 5.5 184 204 167 8 December 152 172 139 7.3 10.6 5.5 198 237 174 9 December 171 202 143 7.1 10.7 5.5 185 235 165

10 December 188 212 164 5.6 7.5 4.5 184 205 163

11 December 168 199 146 8.0 10.7 4.6 200 209 187 12 December 195 212 180 6.7 9.7 4.5 192 205 184 13 December 187 216 161 6.0 7.8 4.5 203 219 188 14 December 186 211 164 6.2 8.9 4.6 192 218 169 15 December 162 202 145 9.3 12.7 6.6 159 174 146 16 December 167 190 151 6.5 7.6 5.6 158 170 149 17 December 182 203 158 6.5 7.7 5.6 177 206 150 18 December 144 192 134 7.2 8.7 5.6 189 196 180 19 December 145 152 138 7.8 8.7 7.6 199 228 171 20 December 158 172 148 8.8 12.3 5.1 213 234 190 21 December 168 191 148 5.4 11.3 4.0 219 264 187 22 December 164 182 149 5.4 14.4 2.7 221 255 176 23 December 153 170 109 5.0 6.9 2.8 200 272 132 24 December 148 175 130 5.9 8.6 2.5 220 286 168 25 December 160 168 149 6.5 8.8 2.6 174 194 160

26 December 149 166 116 7.7 10.2 4.1 170 183 161

27 December 136 157 118 8.1 12.3 3.1 172 188 159 28 December 143 161 131 6.3 9.2 2.1 206 220 190 29 December 140 163 116 6.3 9.1 2.8 203 235 177

30 December 144 160 131 6.8 8.9 2.7 202 221 172

31 December 144 169 126 6.3 10.2 2.7 212 246 184

EPA Licence 1429 - Environmental Monitoring Data December 2020 Page 8 of 25 Unit 4B Boiler Continuous Emission Monitoring Summary EPA Identification no. 14 - Air emissions monitoring, Boiler 4 stack discharge to air

NOX Particulates SOX

3 ppm (7% O2) mg/m ppm (7% O2)

Daily Max Min Daily Max Min Daily Max Min 1 December 153 180 128 9.3 12.1 4.8 213 240 191 2 December 148 174 129 9.2 10.9 8.9 210 224 192 3 December 161 180 144 8.9 12.0 7.7 207 223 187 4 December 180 211 155 8.3 12.0 5.7 181 207 156 5 December 178 206 152 10.3 13.0 9.8 196 207 168 6 December 170 212 139 10.7 12.9 9.6 206 229 171 7 December 163 185 148 10.3 11.6 9.5 185 204 168 8 December 158 172 147 10.5 11.5 9.5 198 232 173 9 December 186 234 143 10.6 12.1 10.1 184 228 166

10 December 202 233 181 11.3 13.3 11.1 182 204 144

11 December 180 255 140 11.6 13.3 11.2 205 228 177 12 December 187 206 163 11.7 14.3 10.1 189 202 171 13 December 182 197 156 10.9 12.2 7.3 203 222 170 14 December 182 204 152 11.5 13.7 10.5 190 220 164 15 December 159 201 125 11.3 13.6 10.2 161 174 152 16 December 186 213 167 9.4 14.3 6.9 166 180 134 17 December 188 211 161 5.8 9.1 2.8 181 201 163 18 December 164 216 149 7.8 14.5 6.8 194 210 190 19 December 153 171 142 6.8 6.8 6.8 202 233 174 20 December 170 197 155 6.6 6.8 5.6 216 240 194 21 December 174 191 154 4.8 5.6 3.6 213 256 180 22 December 163 185 149 5.5 6.9 2.7 217 244 172 23 December 158 196 119 7.2 8.9 5.7 199 283 139 24 December 146 166 118 6.6 7.2 5.2 218 291 147 25 December 164 187 138 6.7 7.2 5.2 177 199 157

26 December 156 175 115 7.2 8.3 6.2 176 189 145

27 December 138 154 107 6.6 8.3 2.0 176 191 150 28 December 153 194 133 6.9 8.3 6.1 208 221 179 29 December 137 163 116 7.3 9.4 6.2 197 244 171

30 December 145 165 115 6.1 6.2 5.1 197 222 154

31 December 145 173 125 5.5 7.0 5.1 207 236 172

EPA Licence 1429 - Environmental Monitoring Data December 2020 Page 9 of 25 Unit 1 Boiler Emission Test Results EPA Identification no. 3 - Air emissions monitoring, Boiler 1 stack discharge to air

Name Reading Units Licence Limit Date Cadmium <0.0002 mg/m3 0.2 12/08/2020 3 Mercury <0.0002 mg/m 0.05 12/08/2020 3 Solid Particles <1 mg/m 50 12/08/2020 3 Type 1 and 2 substances in Aggregate <0.01 mg/m 0.75 12/08/2020

EPA Identification no. 7 - Air emissions monitoring, Boiler 1 Exhaust Duct A

Name Reading Units Date Cadmium <0.0002 mg/m3 12/08/2020 Flow Rate 332 m3/sec 12/08/2020 Mercury <0.0002 mg/m3 12/08/2020 Moisture 5.1 % 12/08/2020 Oxygen 6.2 % 12/08/2020 Solid Particles 1.7 mg/m3 12/08/2020 Temperature 118 degC 12/08/2020 Type 1 and Type 2 substances in Aggregate <0.0093 mg/m3 12/08/2020

EPA Identification no. 8 - Air emissions monitoring, Boiler 1 Exhaust Duct B

Name Reading Units Date Cadmium <0.0002 mg/m3 12/08/2020 Flow Rate 392 m3/sec 12/08/2020 Mercury <0.0002 mg/m3 12/08/2020 Moisture 5.5 % 12/08/2020 Oxygen 8.1 % 12/08/2020 Solid Particles <0.6 mg/m3 12/08/2020 Temperature 117 degC 12/08/2020 Type 1 and Type 2 substances in Aggregate <0.012 mg/m3 12/08/2020

EPA Licence 1429 - Environmental Monitoring Data December 2020 Page 10 of 25 Unit 2 Boiler Emission Test Results EPA Identification no. 4 - Air emissions monitoring, Boiler 2 stack discharge to air

Name Reading Units Licence Limit Date Cadmium <0.0002 mg/m3 0.2 12/082020 3 Mercury <0.0002 mg/m 0.05 12/08/2020 3 Solid Particles <3 mg/m 50 12/08/2020 3 Type 1 and 2 substances in Aggregate <0.009 mg/m 0.75 12/08/2020

EPA Identification no. 9 - Air emissions monitoring, Boiler 2 Exhaust Duct A

Name Reading Units Date Cadmium <0.0003 mg/m3 12/08/2020 Flow Rate 348 m3/sec 12/08/2020 Mercury <0.0002 mg/m3 12/08/2020 Moisture 6.4 % 12/08/2020 Oxygen 8.0 % 12/08/2020 Solid Particles 4.8 mg/m3 12/08/2020 Temperature 126 degC 12/08/2020 Type 1 and Type 2 substances in Aggregate <0.0091 mg/m3 12/08/2020

EPA Identification no. 10 - Air emissions monitoring, Boiler 2 Exhaust Duct B

Name Reading Units Date Cadmium <0.0002 mg/m3 12/08/2020 Flow Rate 362 m3/sec 12/08/2020 Mercury <0.0002 mg/m3 12/08/2020 Moisture 5.7 % 12/08/2020 Oxygen 7.1 % 12/08/2020 Solid Particles <0.6 mg/m3 12/08/2020 Temperature 114 degC 12/08/2020 Type 1 and Type 2 substances in Aggregate <0.0082 mg/m3 12/08/2020

EPA Licence 1429 - Environmental Monitoring Data December 2020 Page 11 of 25 Unit 3 Boiler Emission Test Results EPA Identification no. 5 - Air emissions monitoring, Boiler 3 stack discharge to air

Name Reading Units Licence Limit Date Cadmium <0.0001 mg/m3 0.2 13/082020 3 Mercury <0.0001 mg/m 0.05 13/08/2020 3 Solid Particles 1.1 mg/m 50 13/08/2020 3 Type 1 and 2 substances in Aggregate <0.03 mg/m 0.75 13/08/2020

EPA Identification no. 11 - Air emissions monitoring, Boiler 3 Exhaust Duct A

Name Reading Units Date Cadmium <0.0002 mg/m3 13/08/2020 Flow Rate 347 m3/sec 13/08/2020 Mercury <0.0002 mg/m3 13/08/2020 Moisture 5.1 % 13/08/2020 Oxygen 6.2 % 13/08/2020 Solid Particles 1.7 mg/m3 13/08/2020 Temperature 119 degC 13/08/2020 Type 1 and Type 2 substances in Aggregate <0.014 mg/m3 13/08/2020

EPA Identification no. 12 - Air emissions monitoring, Boiler 3 Exhaust Duct B

Name Reading Units Date Cadmium <0.0001 mg/m3 13/08/2020 Flow Rate 389 m3/sec 13/08/2020 Mercury <0.0001 mg/m3 13/08/2020 Moisture 5.4 % 13/08/2020 Oxygen 6.7 % 13/08/2020 Solid Particles 0.61 mg/m3 13/08/2020 Temperature 114 degC 13/08/2020 Type 1 and Type 2 substances in Aggregate <0.044 mg/m3 13/08/2020

EPA Licence 1429 - Environmental Monitoring Data December 2020 Page 12 of 25 Unit 4 Boiler Emission Test Results EPA Identification no. 6 - Air emissions monitoring, Boiler 4 stack discharge to air

Name Reading Units Licence Limit Date Cadmium <0.0002 mg/m3 0.2 8/09/2020 Mercury <0.0003 mg/m3 0.05 8/09/2020 Solid Particles 1.5 mg/m3 50 8/09/2020 Type 1 and 2 substances in Aggregate <0.01 mg/m3 0.75 8/09/2020

EPA Identification no. 13 - Air emissions monitoring, Boiler 4 Exhaust Duct A

Name Reading Units Date Cadmium <0.0002 mg/m3 8/09/2020 Flow Rate 343 m3/sec 8/09/2020 Mercury 0.00036 mg/m3 8/09/2020 Moisture 5.1 % 8/09/2020 Oxygen 7.8 % 8/09/2020 Solid Particles 1.5 mg/m3 8/09/2020 Temperature 124 degC 8/09/2020 Type 1 and Type 2 substances in Aggregate <0.014 mg/m3 8/09/2020 EPA Identification no. 14 - Air emissions monitoring, Boiler 4 Exhaust Duct B

Name Reading Units Date Cadmium <0.0002 mg/m3 8/09/2020 Flow Rate 306 m3/sec 8/09/2020 Mercury <0.0002 mg/m3 8/09/2020 Moisture 5.3 % 8/09/2020 Oxygen 9.2 % 8/09/2020 Solid Particles 1.4 mg/m3 8/09/2020 Temperature 109 degC 8/09/2020 Type 1 and Type 2 substances in Aggregate <0.011 mg/m3 8/09/2020

EPA Licence 1429 - Environmental Monitoring Data December 2020 Page 13 of 25 Eraring Depositional Dust Gauges

EPA Identification no.17, 18, 19 & 20- Depositional dust monitoring within 1km of the handling operations

Eraring EPA Identification Deposited Matter Identification No

g/m2/month

Ash Combustible Insoluble

E2 17 0.5 0.4 0.9

E4 18 1.3 0.4 1.7

E6 19 0.5 0.3 0.8

U6 20 0.8 0.4 1.2

EPA Licence 1429 - Environmental Monitoring Data December 2020 Page 14 of 25 Water Quality - Lake Monitoring LM10 EPA Identification no. 27 - The waters of Lake Macquarie located midway between cooling water inlet and Hungary Point

Water Air Temp Depth pH Salinity Dissolved Oxygen Secchi Temp

oC m degC pH unit ppt % mg/L m 25.31 0.50 24.03 8.22 34.1 113.6 7.57 2.25

Name Reading Units Date Aluminium 0.099 mg/L 1/12/2020 Ammonia <0.005 mg/L 1/12/2020 Arsenic III <0.005 mg/L 1/12/2020 Arsenic V <0.005 mg/L 1/12/2020 Cadmium <0.0002 mg/L 1/12/2020 Chromium (Trivalent) <0.01 mg/L 1/12/2020 Chromium (VI) 1/12/2020 <0.01 mg/L Compounds Copper 0.001 mg/L 1/12/2020 Iron 0.149 mg/L 1/12/2020 Lead <0.0002 mg/L 1/12/2020 Manganese 0.0063 mg/L 1/12/2020 Nickel <0.0005 mg/L 1/12/2020 pH 8.10 pH /units 1/12/2020 Selenium 0.001 mg/L 1/12/2020 Total Suspended Solids 7 mg/L 1/12/2020 Vanadium 0.0032 mg/L 1/12/2020 Zinc <0.005 mg/L 1/12/2020

EPA Licence 1429 - Environmental Monitoring Data December 2020 Page 15 of 25 Water Quality - Lake Monitoring LM12

EPA Identification no. 29 - The waters of Lake Macquarie located at the Eraring/Vales Point mixing zone off Fishery Point

Water Air Temp Depth pH Salinity Dissolved Oxygen Secchi Temp

oC m degC pH unit ppt % mg/L m 23.22 0.50 24.66 8.20 34.8 102.9 6.77 2.75

Name Reading Units Date Aluminium 0.044 mg/L 1/12/2020 Ammonia <0.005 mg/L 1/12/2020 Arsenic III <0.005 mg/L 1/12/2020 Arsenic V <0.005 mg/L 1/12/2020 Cadmium <0.0002 mg/L 1/12/2020 Chromium (Trivalent) <0.01 mg/L 1/12/2020 Chromium (VI) Compounds <0.01 mg/L 1/12/2020 Copper 0.001 mg/L 1/12/2020 Iron 0.066 mg/L 1/12/2020 Lead <0.0002 mg/L 1/12/2020 Manganese 0.0072 mg/L 1/12/2020 Nickel <0.0005 mg/L 1/12/2020 pH 8.09 pH /units 1/12/2020 Selenium 0.001 mg/L 1/12/2020 Total Suspended Solids <5 mg/L 1/12/2020 Vanadium 0.0033 mg/L 1/12/2020 Zinc <0.005 mg/L 1/12/2020

EPA Licence 1429 - Environmental Monitoring Data December 2020 Page 16 of 25 Water Quality - Lake Monitoring LM4 EPA Identification no. 30 - The northern waters of Lake Macquarie east off Lake Macquarie Yacht Club

Water Air Temp Depth pH Salinity Dissolved Oxygen Secchi Temp

0C m degC pH unit ppt % mg/L m 20.97 0.50 23.15 8.23 35.1 134.2 8.93 1.75

Name Reading Units Date Aluminium 0.044 mg/L 1/12/2020 Ammonia <0.005 mg/L 1/12/2020 Arsenic III <0.005 mg/L 1/12/2020 Arsenic V <0.005 mg/L 1/12/2020 Cadmium <0.0002 mg/L 1/12/2020 Chromium (Trivalent) <0.01 mg/L 1/12/2020 Chromium (VI) Compounds <0.01 mg/L 1/12/2020 Copper <0.001 mg/L 1/12/2020 Iron 0.036 mg/L 1/12/2020 Lead 0.0004 mg/L 1/12/2020 Manganese 0.0042 mg/L 1/12/2020 Nickel <0.0005 mg/L 1/12/2020 pH 8.11 pH /units 1/12/2020 Selenium <0.002 mg/L 1/12/2020 Total Suspended Solids <5 mg/L 1/12/2020 Vanadium 0.0031 mg/L 1/12/2020 Zinc <0.005 mg/L 1/12/2020

EPA Licence 1429 - Environmental Monitoring Data December 2020 Page 17 of 25 Water Quality - Lake Monitoring LM7 EPA Identification no. 28 - The waters of Lake Macquarie located off old inlet point in Myuna Bay

Water Air Temp Depth pH Salinity Dissolved Oxygen Secchi Temp

oC m degC pH unit ppt % mg/L m 21.80 0.5 25.41 8.19 35.2 120.0 7.78 2.25

Name Reading Units Date Aluminium 0.043 mg/L 1/12/2020 Ammonia <0.005 mg/L 1/12/2020 Arsenic III <0.005 mg/L 1/12/2020 Arsenic V <0.005 mg/L 1/12/2020 Cadmium <0.0002 mg/L 1/12/2020 Chromium (Trivalent) <0.01 mg/L 1/12/2020 Chromium (VI) Compounds <0.01 mg/L 1/12/2020 Copper 0.001 mg/L 1/12/2020 Iron 0.080 mg/L 1/12/2020 Lead <0.0002 mg/L 1/12/2020 Manganese 0.0052 mg/L 1/12/2020 Nickel <0.0005 mg/L 1/12/2020 pH 8.10 pH /units 1/12/2020 Selenium <0.002 mg/L 1/12/2020 Total Suspended Solids <5 mg/L 1/12/2020 Vanadium 0.0031 mg/L 1/12/2020 Zinc <0.005 mg/L 1/12/2020

EPA Licence 1429 - Environmental Monitoring Data December 2020 Page 18 of 25 Eraring Ash Dam Effluent Quality Monitoring

EPA Identification no. 22 - Discharge point below siphon pond weir at Ash Dam Name Reading Units Licence Limit Date Aluminium 0.076 mg/L - 3/12/2020 Ammonia 0.35 mg/L - 3/12/2020 Arsenic III <0.0005 mg/L - 3/12/2020 Arsenic V 0.0062 mg/L - 3/12/2020 Cadmium 0.00018 mg/L - 3/12/2020 Chromium (Trivalent) <0.001 mg/L - 3/12/2020 Chromium (VI) Compounds <0.01 mg/L - 3/12/2020 Copper 0.0020 mg/L - 3/12/2020 Iron 0.023 mg/L - 3/12/2020 Lead <0.0001 mg/L - 3/12/2020 Manganese 0.0396 mg/L - 3/12/2020 Nickel 0.0015 mg/L - 3/12/2020 Nitrite and Nitrate as N 1.75 mg/L - 3/12/2020 Nitrogen 2.6 mg/L - 3/12/2020 pH 8.39 pH /units - 3/12/2020 Phosphorus as P 0.43 mg/L - 3/12/2020 Reactive Phosphorus as P 0.44 mg/L - 3/12/2020 Selenium 0.0344 mg/L - 3/12/2020 Total Kjeldahl Nitrogen 0.9 mg/L - 3/12/2020 Total Suspended Solids 6 mg/L 50 3/12/2020 Vanadium 0.0331 mg/L - 3/12/2020 Zinc <0.001 mg/L - 3/12/2020

EPA Licence 1429 - Environmental Monitoring Data December 2020 Page 19 of 25 Eraring Cooling Water Inlet Canal

EPA Identification no. 31 - Inlet canal of the cooling water intake from Lake Macquarie Name Reading Units Licence Limit Date Aluminium 0.176 mg/L - 3/12/2020 Ammonia <0.005 mg/L - 3/12/2020 Arsenic III <0.005 mg/L - 3/12/2020 Arsenic V <0.005 mg/L - 3/12/2020 Cadmium <0.0002 mg/L - 3/12/2020 Chromium (Trivalent) <0.001 mg/L - 3/12/2020 Chromium (VI) Compounds <0.01 mg/L - 3/12/2020 Copper 0.0015 mg/L - 3/12/2020 Iron 0.267 mg/L - 3/12/2020 Lead 0.0003 mg/L - 3/12/2020 Manganese 0.0094 mg/L - 3/12/2020 Nickel <0.0005 mg/L - 3/12/2020 pH 8.06 pH units - 3/12/2020 Selenium 0.001 mg/L - 3/12/2020 Total suspended Solids <5 mg/L - 3/12/2020 Vanadium 0.0048 mg/L - 3/12/2020 Zinc 0.030 mg/L - 3/12/2020 Dissolved Oxygen 8.64 mg/L - 3/12/2020 Field Temperature 24.2 degC - 3/12/2020 Salinity 35.2 ppt - 3/12/2020 Secchi Disk 2.75 m - 3/12/2020 Temperature – Average 25.2 deg C - December 2020 Temperature – Minimum 23.4 deg C - December 2020 Temperature - Maximum 27.3 deg C - December 2020

EPA Licence 1429 - Environmental Monitoring Data December 2020 Page 20 of 25 Eraring Cooling Water Outlet Canal

EPA Identification no. 21 - Cooling water outlet canal to Myuna Bay

Reading Name Units Licence Limit Date 3/12/20 Copper 0.0042 mg/L 0.005 3/12/2020 Iron 1.22 mg/L 0.3 3/12/2020 Selenium 0.002 mg/L 0.002 3/12/2020 Temperature – Average 31.5 deg C 37.5 December 2020 Temperature – Minimum 27.0 deg C 37.5 December 2020 Temperature - Maximum 35.2 deg C 37.5 December 2020 Maximum Daily Discharge from Ash 30.75 ML 150 December 2020 MonthlyDam Discharge from Ash Dam 217.2 ML - December 2020

EPA Licence 1429 - Environmental Monitoring Data December 2020 Page 21 of 25 Emergency Discharge – Toe Drain Pond

EPA Identification no. 24 - Emergency discharge to toe drain collection pond

Name Reading Units Licence Limit Date Aluminium 0.030 mg/L - 3/12/2020 Ammonia 1.50 mg/L - 3/12/2020 Arsenic III <0.0005 mg/L - 3/12/2020 Arsenic V <0.0005 mg/L - 3/12/2020 Cadmium 0.00006 mg/L - 3/12/2020 Chromium (Trivalent) <0.001 mg/L - 3/12/2020 Chromium (VI) Compounds <0.01 mg/L - 3/12/2020 Copper <0.0005 mg/L - 3/12/2020 Iron 5.31 mg/L - 3/12/2020 Lead <0.0001 mg/L - 3/12/2020 Manganese 1.78 mg/L - 3/12/2020 Nickel 0.0010 mg/L - 3/12/2020 Nitrite and Nitrate as N 0.114 mg/L - 3/12/2020 Nitrogen 1.75 mg/L - 3/12/2020 pH 6.83 pH /units 6-9.5 3/12/2020 Phosphorus as P 0.008 mg/L - 3/12/2020 Reactive Phosphorus as P 0.004 mg/L - 3/12/2020 Selenium 0.0004 mg/L - 3/12/2020 Total Kjeldahl Nitrogen 1.64 mg/L - 3/12/2020 Total Suspended Solids 23 mg/L 50 3/12/2020 Vanadium 0.0008 mg/L - 3/12/2020 Zinc 0.020 mg/L - 3/12/2020

EPA Licence 1429 - Environmental Monitoring Data December 2020 Page 22 of 25 MR217 EPA Identification no. 23 - Emergency discharge from ash dam outlet at culvert Not Discharging December 2020 Name Reading Units Licence Limit Date Aluminium mg/L - 3/12/2020 Ammonia mg/L - 3/12/2020 Arsenic III mg/L - 3/12/2020 Arsenic V mg/L - 3/12/2020 Cadmium mg/L - 3/12/2020 Chromium (Trivalent) mg/L - 3/12/2020 Chromium (VI) Compounds mg/L - 3/12/2020 Copper mg/L - 3/12/2020 Iron mg/L - 3/12/2020 Lead mg/L - 3/12/2020 Manganese mg/L - 3/12/2020 Nickel mg/L - 3/12/2020 Nitrite and Nitrate as N mg/L - 3/12/2020 Nitrogen mg/L - 3/12/2020 pH pH /units 6-9.5 3/12/2020 Phosphorus as P mg/L - 3/12/2020 Reactive Phosphorus as P mg/L - 3/12/2020 Selenium mg/L - 3/12/2020 Total Kjeldahl Nitrogen mg/L - 3/12/2020 Total Suspended Solids mg/L 50 3/12/2020 Vanadium mg/L - 3/12/2020 Zinc mg/L - 3/12/2020

EPA Licence 1429 - Environmental Monitoring Data December 2020 Page 23 of 25 Groundwater Monitoring Groundwater Well – MW01 EPA Identification no. 32 – Groundwater Monitoring Well 01

Name Reading Units Date Aluminium 0.224 mg/L 7/12/2020 Ammonia <0.01 mg/L 7/12/2020 Arsenic (III) <0.0005 mg/L 7/12/2020 Arsenic (V) <0.0005 mg/L 7/12/2020 Cadmium <0.00005 mg/L 7/12/2020 Calcium 2 mg/L 7/12/2020 Chromium (trivalent) <0.01 mg/L 7/12/2020 Chromium (VI) compounds <0.01 mg/L 7/12/2020 Copper 0.0032 mg/L 7/12/2020 Electrical Conductivity 448 uS/cm 7/12/2020 Iron 0.392 mg/L 7/12/2020 Lead 0.0015 mg/L 7/12/2020 Magnesium 5 mg/L 7/12/2020 Manganese 0.111 mg/L 7/12/2020 Nickel 0.0103 mg/L 7/12/2020 pH 4.89 pH 7/12/2020 Potassium 4 mg/L 7/12/2020 Selenium <0.0002 mg/L 7/12/2020 Sodium 64 mg/L 7/12/2020 Standing Water Level 8.40 metres 7/12/2020 Vanadium 0.0005 mg/L 7/12/2020 Zinc 0.030 mg/L 7/12/2020

Groundwater Well – MW02 EPA Identification no. 33 – Groundwater Monitoring Well 02

Name Reading Units Date Aluminium 0.250 mg/L 3/12/2020 Ammonia 1.16 mg/L 3/12/2020 Arsenic (III) 0.0008 mg/L 3/12/2020 Arsenic (V) 0.0009 mg/L 3/12/2020 Cadmium 0.00010 mg/L 3/12/2020 Calcium 276 mg/L 3/12/2020 Chromium (trivalent) <0.01 mg/L 3/12/2020 Chromium (VI) compounds <0.01 mg/L 3/12/2020 Copper 0.0023 mg/L 3/12/2020 Electrical Conductivity 15700 uS/cm 3/12/2020 Iron 3.880 mg/L 3/12/2020 Lead 0.0034 mg/L 3/12/2020 Magnesium 201 mg/L 3/12/2020 Manganese 0.948 mg/L 3/12/2020 Nickel 0.0056 mg/L 3/12/2020 pH 6.44 pH 3/12/2020 Potassium 105 mg/L 3/12/2020 Selenium 0.0005 mg/L 3/12/2020 Sodium 2540 mg/L 3/12/2020 Standing Water Level 4.53 metres 3/12/2020 Vanadium 0.0023 mg/L 3/12/2020 Zinc 0.110 mg/L 3/12/2020

EPA Licence 1429 - Environmental Monitoring Data December 2020 Page 24 of 25 Groundwater Well – MW06 EPA Identification no. 34 – Groundwater Monitoring Well 06

Name Reading Units Date Aluminium 0.027 mg/L 7/12/2020 Ammonia 3.36 mg/L 7/12/2020 Arsenic (III) 0.0022 mg/L 7/12/2020 Arsenic (V) 0.0018 mg/L 7/12/2020 Cadmium <0.0002 mg/L 7/12/2020 Calcium 438 mg/L 7/12/2020 Chromium (trivalent) <0.01 mg/L 7/12/2020 Chromium (VI) compounds <0.01 mg/L 7/12/2020 Copper <0.001 mg/L 7/12/2020 Electrical Conductivity 20100 uS/cm 7/12/2020 Iron 14.800 mg/L 7/12/2020 Lead <0.0002 mg/L 7/12/2020 Magnesium 256 mg/L 7/12/2020 Manganese 0.405 mg/L 7/12/2020 Nickel 0.0008 mg/L 7/12/2020 pH 6.47 pH 7/12/2020 Potassium 115 mg/L 7/12/2020 Selenium <0.002 mg/L 7/12/2020 Sodium 3360 mg/L 7/12/2020 Standing Water Level 1.96 metres 7/12/2020 Vanadium <0.0005 mg/L 7/12/2020 Zinc 0.014 mg/L 7/12/2020

Groundwater Well – EGM/D26 EPA Identification no. 35 – Groundwater Monitoring Well D26 Groundwater well was dry during sampling in December 2020

Name Reading Units Date Aluminium mg/L 3/12/2020 Ammonia mg/L 3/12/2020 Arsenic (III) mg/L 3/12/2020 Arsenic (V) mg/L 3/12/2020 Cadmium mg/L 3/12/2020 Calcium mg/L 3/12/2020 Chromium (trivalent) mg/L 3/12/2020 Chromium (VI) compounds mg/L 3/12/2020 Copper mg/L 3/12/2020 Electrical Conductivity uS/cm 3/12/2020 Iron mg/L 3/12/2020 Lead mg/L 3/12/2020 Magnesium mg/L 3/12/2020 Manganese mg/L 3/12/2020 Nickel mg/L 3/12/2020 pH pH 3/12/2020 Potassium mg/L 3/12/2020 Selenium mg/L 3/12/2020 Sodium mg/L 3/12/2020 Standing Water Level metres 3/12/2020 Vanadium mg/L 3/12/2020 Zinc mg/L 3/12/2020

EPA Licence 1429 - Environmental Monitoring Data December 2020 Page 25 of 25