State of the Bay Report 2011-Final.pdf - Anchor Environmental

More documents

Recommendations

Info

State of Saldanha Bay & Langebaan Lagoon 2011 Activities & discharges Cape Reef Products TNPA Arcelor Mittal Namaqua Sands Abattoir Duferco These discharges reportedly often place the plant under considerable stress and result in the discharge of substandard effluent (CSIR 2002). Until recently the Langebaan WWTW did not discharge any effluent into the sea as all of it was used it to irrigate the local golf course. However, increasing volumes of effluent received by this plant is yielding more water than is required for irrigation and some of this is now discharged into the Bay. There are nine sewage pump stations in Saldanha Bay and two conservancy tanks, all of which are situated on the western border of Small Bay. The conservancy tanks are positioned adjacent to the Yacht Club. There are eighteen sewage pump stations in Langebaan situated throughout the town, many of which are near the edge of the lagoon, and three conservancy tanks spread around the edge of the lagoon at Oostewal, Stofbergsfontein and Oudepos (Figure 3.13). Sewage effluent can enter the Saldanha/Langebaan marine environment via three routes, namely: Discharge of treated sewage effluent in the Bok River which drains into Small Bay; Overflow of sewage pump stations as a result of pump malfunction of power failures; Seepage or overflow from septic or conservancy tanks. 36 ANCHOR e n v i r o n m en t a l
State of Saldanha Bay & Langebaan Lagoon 2011 Activities & discharges Bok River Saldanha Bay Small Bay Big Bay Club Mykonos o 33 3’S Langebaan Oudepos Oosterwal Langebaan Lagoon Stofbergsfontein o 33 10’S Waste water treatment works Sewage pump stations Conservance tanks 0m 1500m 3000m 4500m 6000m o 17 50’E Figure 3.13. Location of waste water treatment works, sewage pump stations and conservancy tanks in Saldanha and Langebaan area (2011). 37 ANCHOR e n v i r o n m en t a l
Page 1:
Saldanha Bay and Langebaan Lagoon:
Page 5 and 6:
State of Saldanha Bay & Langebaan L
Page 7 and 8:
Page 9 and 10:
Page 11 and 12:
Page 13 and 14:
Page 15 and 16:
Page 17 and 18: State of Saldanha Bay & Langebaan L
Page 49 and 50: Jul-05 Sep-05 Nov-05 Jan-06 Mar-06
Page 67: State of Saldanha Bay & Langebaan L
Page 71 and 72: Average Daily Flow (m3/day) Apr-03
Page 75 and 76: Average daily flow (m 3 /day) Faeca
Page 77 and 78: Ammonia Nitrogen (mg/l as N) Nitrat
Page 85 and 86: Volume of Effluent (kL) Jan-01 Mar-
Page 87 and 88: Mussels Oysters Abalone Scallops Re
Page 111 and 112: Cadmium (mg/kg) Lead(mg/kg) Mercury
Page 117 and 118: Beach Width (m) State of Saldanha B
Page 119 and 120:
Page 121 and 122:
Page 123 and 124:
Page 125 and 126:
Page 127 and 128:
Page 129 and 130:
Page 131 and 132:
Page 133 and 134:
Page 135 and 136:
Page 137 and 138:
Page 139 and 140:
Page 141 and 142:
Page 143 and 144:
Page 145 and 146:
Copper (mg/kg) Copper (mg/kg) Coppe
Page 147 and 148:
Page 149 and 150:
Page 151 and 152:
Page 153 and 154:
Page 155 and 156:
Page 157 and 158:
Page 159 and 160:
No. saltmarsh patches Saltmarsh are
Page 161 and 162:
Page 163 and 164:
Page 165 and 166:
Page 167 and 168:
Page 169 and 170:
Page 171 and 172:
Top 10 species contributing to simi
Page 173 and 174:
Page 175 and 176:
Page 177 and 178:
Proportion of total number of indiv
Page 179 and 180:
Page 181 and 182:
Page 183 and 184:
Page 185 and 186:
Page 187 and 188:
Page 189 and 190:
Page 191 and 192:
Page 193 and 194:
Page 195 and 196:
Page 197 and 198:
Page 199 and 200:
Page 201 and 202:
Page 203 and 204:
Page 205 and 206:
Page 207 and 208:
Page 209 and 210:
Afrolittorina knysnaensis (no/0.5 m
Page 211 and 212:
Similarity Iron Ore Jetty Iron Ore
Page 213 and 214:
Page 215 and 216:
Lynch Point State of Saldanha Bay &
Page 217 and 218:
Dive School Jetty Schaapen East Sch
Page 219 and 220:
Page 221 and 222:
High 05 High 08 High 09 High 10 Hig
Page 223 and 224:
Page 225 and 226:
Page 227 and 228:
Page 229 and 230:
Number of species State of Saldanha
Page 231 and 232:
Page 233 and 234:
Page 235 and 236:
Fish abundance (No.m -2 ) State of
Page 237 and 238:
Page 239 and 240:
Page 241 and 242:
Page 243 and 244:
Page 245 and 246:
Page 247 and 248:
Page 249 and 250:
Page 251 and 252:
Page 253 and 254:
Number of breeding pairs State of S
Page 255 and 256:
Page 257 and 258:
Page 259 and 260:
Page 261 and 262:
Page 263 and 264:
Page 265 and 266:
Number of birds 1976 1977 1978 1979
Page 267 and 268:
Page 269 and 270:
Page 271 and 272:
Page 273 and 274:
Page 275 and 276:
No. sites Abundance (no. ind. m -2
Page 277 and 278:
Page 279 and 280:
Page 281 and 282:
Page 283 and 284:
Page 285 and 286:
Page 287 and 288:
Page 289 and 290:
Page 291 and 292:
Page 293 and 294:
Page 295 and 296:
Page 297 and 298:
Page 299 and 300:
Page 301 and 302:
Page 303:
show all

State of the Bay Report 2011-Final.pdf - Anchor Environmental

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?