Views
3 years ago

Environmental Impact Assessment - Enviro Dynamics Namibia

Environmental Impact Assessment - Enviro Dynamics Namibia

Chapter

Chapter 7:Environmental Impact AssessmentCHAPTER 7.ENVIRONMENTAL IMPACT ASSESSMENT7.1 INTRODUCTIONThe potential impacts associated with the dredging of marine phosphates from Mining LicenceArea have been established during consultation with the specialist consultants, further, potentialimpacts were raised through the public consultation phase of the EIA 1. The terms of reference forthe work undertaken by the Specialist Consultants were modified where relevant toaccommodate for additional concerns raised by I&APs.These Specialist studies are:• Fish and Fisheries, Seabirds and Marine Mammals. Undertaken by Mr. D Japp of CapricornFisheries Monitoring cc – dave@capfish.co.za• Assessment of potential Impacts on marine life arising from changes to marine waterquality. Undertaken by Dr R Carter of Lwandle Technologies (Pty) Ltd. – robin@lwandle.co.za• Marine Benthic Specialist Study for a proposed development of Phosphate deposit in theSandpiper Mining Licence Area (ML 170) off the coast of Central Namibia. Undertaken by Dr NSteffani of Steffani Marine Environmental Consultant – nina@steffanienviro.co.za.• Jellyfish in the environs of the proposed dredging of phosphate deposits in the SandpiperPhosphate Mining Licence Area (ML 170) off the coast of Central Namibia. Undertaken byProf. M Gibbons of Department of Biodiversity and Conservation Biology, University of theWestern Cape – mgibbons@uwc.ac.zaThese specialists were required to assess the potential impacts, rate their significance,recommend achievable mitigation objectives to reduce the effects of (negative) impacts and torecommend monitoring practices to assess the effectiveness of mitigation. The full text of thefour specialist studies are presented in Appendix 1. It is recommended that the full text of therespective study is read.In addition to the above specialists, Dr J David and independent consultant has provided a review,titled “A Brief History of the Namibian Fishery”. This is presented in Appendix 3, with sectionsextracted for inclusion in this Chapter, refer to section 7.47.2 THE ASSESSMENT PROCEDURE AND THE DETERMINATION OF SIGNIFICANCETo ensure for consistency in the evaluation of the impacts the specialists were provided with a setof definitions to apply for their determination of the significance of the impacts. In consultationwith the specialists the set of definitions was revised from that detailed in the scoping report. Thiswas done so as to accommodate for the extreme scales of impacts as identified during their1 Reported in the Scoping Report, submitted to MME and MET in December 2011.Final ReportNamibian Marine Phosphate (Pty) Ltd.Page 7-3

Chapter 7:Environmental Impact Assessmentinvestigations. The specialists in the evaluation of the impacts apply the revised definitions. Theimpact assessments are based on the professional opinions of the specialists, fieldwork and desktop analysis (available information). The definitions are identified as robust and in line withcommonly applied impact criteria used in Southern Africa and as recognised internationally.The following methods have been used to determine the significance rating of impacts identifiedin this specialist study:1. Description of impact - reviews the type of effect that a proposed activity will have on theenvironment;2. What will be affected; and3. How will it be affected.Points 1 to 3 above are to be considered / evaluated in the context of the following impactcriteria:• Extent;• Duration;• Probability; and• Intensity / magnitude.These impact criteria are to be applied as prescribed in the table below:Impact Criteria:ExtentDredge AreaPer vessel cyclei.e. ~66,000m 2 or6.6 haAnnual MiningAreaUp to 3 km 2Specific MineSite (SP1 or SP2)each is 22x8 kmor 176km 2Local25-50 km or2,000km 2 -8,000km 2Regional50-100 km or8,000km 2 –30,000km 2National100 km to EEZ(200 nauticalmiles) 2100 to 370 km,or >30,000km 2DurationVery Short Term3 daysShort term3 days – 1 yearMedium term1 - 5 yearsLong term5 – 20 yearsPermanent> 20 years (life ofmine)Intensity/MagnitudeNo lasting effectNo environmentalfunctions andprocesses are affectedMinor effectsThe environmentfunctions, but in amodified mannerModerate effectsEnvironmental functionsand processes are alteredto such extent that theytemporarily ceaseSerious effectsEnvironmental functionsand processes are alteredto such extent that theypermanently ceaseProbability Improbable Possible Probable Highly Probable/ Definite2 1 nautical mile = 1,85 kilometresFinal ReportNamibian Marine Phosphate (Pty) Ltd.Page 7-4

Final - Enviro Dynamics Namibia
Environmental Management Plan - Enviro Dynamics Namibia
Chapter 0 - Cover Summary.pdf - Enviro Dynamics Namibia
Cover Summary - Enviro Dynamics Namibia
Environmental Management Plan - Enviro Dynamics Namibia
Marine Benthic Study.pdf - Enviro Dynamics Namibia
Fisheries - Enviro Dynamics Namibia
Water Column Study.pdf - Enviro Dynamics Namibia
Water Column Study - Enviro Dynamics Namibia
chapter 1. introduction - Enviro Dynamics Namibia
Draft Social Impact Assessment - Enviro Dynamics Namibia
Comment Responses - Enviro Dynamics Namibia
Chapter 6 - Public Consultation.pdf - Enviro Dynamics Namibia
Marine Benthic Study - Enviro Dynamics Namibia
Chapter 2 - Legislation and Policy.pdf - Enviro Dynamics Namibia
Chapter 5 - Socio-economics.pdf - Enviro Dynamics Namibia
Appendix 1a - Fish and Fisheries Study - Enviro Dynamics Namibia
Appendix 1d - Jellyfish Study.pdf - Enviro Dynamics Namibia
Sandpiper Project - Enviro Dynamics Namibia
Environmental Management Plan - Enviro Dynamics Namibia
Enviro Dyanmics presentation - Enviro Dynamics Namibia
EIA DRAFT MAIN REPORT.pdf - Enviro Dynamics Namibia
Groud Water Impact Assessment - Enviro Dynamics Namibia
Hydrology and Flood Evaluation - Enviro Dynamics Namibia
Wetland & Fish Ecology - Enviro Dynamics Namibia
Final Environmental Scoping Report MTC.docx - Enviro Dynamics ...
Environmental Impact Assessment
Impact Assessment Environmental and Societal Impacts
International Environmental Impact Assessment - Atkins