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Presentation to the Stakeholder Presentation to the Stakeholder Powered By Docstoc
					           Mooi-
           Mooi-Mgeni Transfer Scheme                                                                           Presentation Content
                    Phase 2
                      Environmental Impact                                                           •   Introduction
                           Assessment                                                                •   Bio-
                                                                                                         Bio-physical Impact Assessment
                                                                                                     •   Social Impact Assessment
               Presentation to the Stakeholder                                                       •   Environmental Management Plan
                         Committee                                                                   •   Summary of Issues and Concerns
                                  4 December 2000

                              Wayne Schäfer
    Mooi-
    Mooi-Mgeni Transfer Scheme Phase 2          Environmental Impact Assessment               Mooi-
                                                                                              Mooi-Mgeni Transfer Scheme Phase 2      Environmental Impact Assessment




           Introduction and Background                                                       Introduction and Background (cont.)
                                                                                               Bio-
                                                                                             • Bio-physical impacts
           Pre-
         • Pre-feasibility Study (1998)
                                                                                                                                  (off-
                                                                                                 – significant wetlands inundated (off-site
              – scoping level of assessment                                                        mitigation)
              – comparison of Phase 2 storage options                                            – pristine riverine habitat inundated (none)
                   • Spring Grove Dam
                                                                                                 – botanical red data species identified (relocation
                   • Dartington Dam
                                                                                                          off-
                                                                                                   and/or off-site mitigation)
              – considered comparative impacts rather
                                                                                                 – change to downstream flow regime (investigate)
                than specific impacts with mitigation
                                                                                                 – migration of bass upstream (survey)
                                                                                                   micro-
                                                                                                 – micro-climatic change (specialist opinion)
    Mooi-
    Mooi-Mgeni Transfer Scheme Phase 2          Environmental Impact Assessment               Mooi-
                                                                                              Mooi-Mgeni Transfer Scheme Phase 2      Environmental Impact Assessment




   Introduction and Background (cont.)                                                                                   (cont.)
                                                                                             Introduction and Background (cont.)
  • Social impacts                                                                       • Findings
                                              FSL)
    – inundation of Inchbrackie Falls (reduce FSL)                                            – mitigated impacts of Spring Grove Dam less than
    – inundation of property (appropriate compensation)                                         those of Dartington Dam;
    – inundation of historical / cultural sites (investigate)                                 – no fatal flaw with the construction of Spring Grove if
    – barrier to movement (replace, realign roads)                                              mitigation carried out;

    – Vaalekop right-of-way servitude (legal advice)
               right-of-                                                                                               EIA;
                                                                                              – need to undertake full EIA; and

    – poor information dissemination (better communication)                                   – need a local development plan.

                                                    EMP)
    – inconvenience due to construction (develop an EMP)
    Mooi-
    Mooi-Mgeni Transfer Scheme Phase 2          Environmental Impact Assessment               Mooi-
                                                                                              Mooi-Mgeni Transfer Scheme Phase 2      Environmental Impact Assessment




                                                                                                                      Botanical Survey
                      Presentation Content                                                   • Scope of work
                                                                                                – field survey of natural vegetation communities
           • Introduction                                                                       – specimen collection for identification and records
             Bio-
           • Bio-physical Impact Assessment                                                     – assessment of grassland “species richness”
                                                                                                – mapping of natural vegetation

                                                                                             • Findings
                                                                                                – grasslands highly modified
                                                                                                – riparian vegetation highly altered and infested
                                                                                                  with exotic willow species
    Mooi-
    Mooi-Mgeni Transfer Scheme Phase 2          Environmental Impact Assessment               Mooi-
                                                                                              Mooi-Mgeni Transfer Scheme Phase 2      Environmental Impact Assessment




annex_pubpart_springF3                                                            Page F-4                                         Final Report - October 2002
                  Botanical Survey (cont.)                                                                                                 Wetland Survey
              (cont.)
   • Findings (cont.)                                                                                            • Scope of work
      – 22 plant species of conservation importance (3 red                                                          – preparation of geographical inventory of wetlands
        data species)                                                                                               – classification of wetlands
      – 10 plant species of medicinal or craft value                                                                – cranes
   • Impact assessment                                                                                              – significance of loss and means of mitigation
     Impact                              Magnitude          Significance     Mitigation

     Inchbrackie communities             very high          high             none
                                                                                                                 • Findings
     Species rich communities            low                low              transplant                             – 17 wetlands totalling 414 ha affected (flood plain,
     Useful plants                       low                moderate         collect for research
     Red data species                    moderate           moderate         transplant upstream                      valley bottom, slope & oxbow)
                                                                                                                    – none are pristine, but all still have functional areas
    Mooi-
    Mooi-Mgeni Transfer Scheme Phase 2                              Environmental Impact Assessment               Mooi-
                                                                                                                  Mooi-Mgeni Transfer Scheme Phase 2           Environmental Impact Assessment




                   Wetland Survey (cont.)                                                                                           Invertebrate Survey
              (cont.)
   • Findings (cont.)                                                                                            • Scope of work
      – 3 pairs of blue crane & 4 pairs of crowned crane                                                            – intensive survey of mayflies in the area
        present, but no nest affected                                                                               – sampling of other invertebrates
      – 20 % and 15 % of home range of blue and crowned                                                             – determine significance of loss of habitat and means
        cranes lost respectively                                                                                      of mitigation
   • Impact assessment
     Impact                              Magnitude         Significance Mitigation                               • Findings
     Loss of wetlands
     Loss of wetland function
                                         very high
                                         high
                                                           high
                                                           medium
                                                                           off-site rehabilitation
                                                                           off-
                                                                           off-
                                                                           off-site rehabilitation
                                                                                                                    – all but 1 of the 8 original mayflies found in the area
     Loss of bio-diversity
              bio-                       very high         medium          off-
                                                                           off-site rehabilitation                    seem to have disappeared
     Loss of Crane habitat               high              high            off-
                                                                           off-site rehabilitation
     Cultivation of wetlands             high              high            catchment management                     – 2 species of crab, neither of conservation concern
    Mooi-
    Mooi-Mgeni Transfer Scheme Phase 2                              Environmental Impact Assessment               Mooi-
                                                                                                                  Mooi-Mgeni Transfer Scheme Phase 2           Environmental Impact Assessment




            Invertebrate Survey (cont.)                                                                                                          Fish Survey
   • Findings (cont.)
              (cont.)                                                                                            • Scope of work
      – 3 other types of aquatic invertebrates found for                                                            – intensive survey of the rivers & dams of the area
        which their conservation status is unknown                                                                  – determine impact of dam on any indigenous fish
      – all odonata found to be common and plentiful                                                                – determine the possibility of the spread of alien
      – terrestrial invertebrates                                                                                     species
   • Impact assessment
     Impact                          Magnitude       Significance Mitigation
                                                                                                                 • Findings
     Loss of mayfly habitat          low             low            down stream release regime                      – fish fauna is dominated by alien species (3
     Loss of crab habitat
     Loss of odonata habitat
                                     low
                                     low
                                                     low
                                                     low
                                                                    nothing
                                                                    nothing
                                                                                                                      indigenous species & 6 alien species found)
     Terrestrial invertebrates       high            low            nothing
                                                                                                                    – all indigenous species are common to KZN
    Mooi-
    Mooi-Mgeni Transfer Scheme Phase 2                              Environmental Impact Assessment               Mooi-
                                                                                                                  Mooi-Mgeni Transfer Scheme Phase 2           Environmental Impact Assessment




                         Fish Survey (cont.)                                                                                          Vertebrates Survey
                                                                                                                 • Scope of work
              (cont.)
   • Findings (cont.)
                                                                                                                    – field traps in 8 different habitats
      – absence of eels is an anomaly
                                                                                                                    – attention to mammals, amphibians & reptiles
                                                                                                                    – determine significance of loss of habitat and means
   • Impact assessment
                                                                                                                      of mitigation
     Impact                              Magnitude      Significance Mitigation
     Barrier to movement (indig.) low
                         (indig.)                       low             down stream releases &
                                                                        eelway
                                                                                                                 • Findings
     Barrier to movement (alien) high                   medium          nothing ##                                  – 2 species of small mammal present (mouse), but 5
     Creation of new water body medium                  low             develop fisheries
                                                                                                                      red data species listed in the general area
     ## Weir versus eradication
                                                                                                                    – 8 species of amphibian out of a possible 18 present
    Mooi-
    Mooi-Mgeni Transfer Scheme Phase 2                              Environmental Impact Assessment               Mooi-
                                                                                                                  Mooi-Mgeni Transfer Scheme Phase 2           Environmental Impact Assessment




annex_pubpart_springF3                                                                                Page F-5                                            Final Report - October 2002
                Vertebrate Survey (cont.)                                                                                                      Water Quality
                                                                                                                • Catchment
              (cont.)
   • Findings (cont.)
                                                                                                                                                                                                                                               0m




                                                                                                                      – main land use agriculture
       – 18 species of reptile out of a possible 32 present                                                                                                                                                                                    10 m



                                                                                                                      – WQ generally good
                                                                                                                • Impoundment
                                                                                                                                                                                       mixing
                                                                                                                                                                                                                                               20 m




   • Impact assessment                                                                                                – low algal counts
                                                                                                                                                                                             mixing winter
                                                                                                                                                                                                         w inter          res tratif ication

                                                                                                                                                                    stratified
                                                                                                                                                                        stratif ied                   is othermal         restratification
                                                                                                                                                           mixing                                 isothermal



                                                                                                                      – stratification likely
                                                                                                                                                                                                                                               30 m


       Impact                             Magnitude   Significance Mitigation
                                                                                                                                                                           Jan                          Jun                         D ec

       Loss of mammal habitat    high                 medium         capture & relocation
                                                                                                                      – improvement in d/s WQ
                                                                                                                                                                     0-1         1-2   2-3       3-4   4-5    5-6   6-7    7-8        8-9       9-10




       Loss of amphibian habitat medium               medium         off-
                                                                     off-site wetland
       Loss of reptile habitat   medium               medium         off-
                                                                     off-site wetland
                                                                                                                      – reduction in d/s temperature and oxygen
                                                                                                                      – limited sedimentation
     Mooi-
     Mooi-Mgeni Transfer Scheme Phase 2                           Environmental Impact Assessment                   Mooi-
                                                                                                                    Mooi-Mgeni Transfer Scheme Phase 2                                 Environmental Impact Assessment




                      Water Quality (cont.)                                                                            Bio-physical Impact Assessment
                                                                                                                                            • Costs of mitigation
   • Impact assessment                                                                                                   – botanical transplant                                                               R 50 000
       Impact                             Magnitude   Significance    Mitigation
                                                                                                                           off-
                                                                                                                         – off-site wetland rehabilitation                                        R 1 000 000
       Algal blooms                       low         low             scour instead of spill                             – investigate fisheries                                                         R 100 000
                                                                      catchment management
       Downstream river reach             moderate    moderate        aerate discharge                                   – mammal capture & relocation                                                        R 20 000
       Stratification                     low         low                         off-
                                                                      multi level off-take
       Sedimentation                      low         low             none                                               – professional                                                                 R 250 000


                                                                                                                         – total                                                             R 1 420 000

     Mooi-
     Mooi-Mgeni Transfer Scheme Phase 2                           Environmental Impact Assessment                   Mooi-
                                                                                                                    Mooi-Mgeni Transfer Scheme Phase 2                                 Environmental Impact Assessment




                                  Social Survey                                                                                                  Social survey

         • Scope of work
              – individual interviews with affected property
                owners
              – inventory of affected resources
              – archaeological survey
              – issues and concerns
                                                                                                                •   main & access roads                                                • 56 properties affected
                                                                                                                •   water supplies                                                     • 44 landowners
                                                                                                                •   access & movement                                                  • 15 commercial farms
     Mooi-
     Mooi-Mgeni Transfer Scheme Phase 2                           Environmental Impact Assessment                   Mooi-
                                                                                                                    Mooi-Mgeni Transfer Scheme Phase 2                                 Environmental Impact Assessment
                                                                                                                •                  well-
                                                                                                                    community well-being                                               • 41 small holdings




                      Archaeological survey                                                                                    Social Impact Assessment
                                                                                                                                            • Costs of mitigation
                                                                            S S
                                                                                                                         – property and infrastructure                                   R 18 000 000
                                                                                                                         – services                                                               R 1 000 000
                                                                                                                         – solatium                                                              R 2 000 000
                       T G                S
                             G                                                                                           – archaeological                                                                     R 75 000
                                                         S
                                                                                                                         – other                                                                        R 500 000
                                                                                                                         – professional                                                           R 1 000 000

           Mitigation                                                        Legend
                                                                 S – Stone walled settlement                             – total                                                       R 22 575 000
   – Mapping & test pits                                         T – Stone tool scatter
         -
     Mooi-Mgeni Transfer Scheme Phase 2
   – Mooi R 75 000
     Cost
                                                                                       Assessment
                                                                 G Environmental Impactwith graves
                                                                     – Settlement
                                                                                                                    Mooi-
                                                                                                                    Mooi-Mgeni Transfer Scheme Phase 2                                 Environmental Impact Assessment




annex_pubpart_springF3                                                                               Page F-6                                                       Final Report - October 2002
                       Social Survey (cont.)
                            • Issues & concerns
    – access to water                    – expropriation procedures
         • irrigation                    – project uncertainty
         • domestic                        • timing (when?)
         • recreation                      • property values (if?)
    – access to properties    – construction activities
    – access to & development – communication
      of the riparian areas   – inundation of graves
    – retrenchment &          – fishing rights
      resettlement
    Mooi-
    Mooi-Mgeni Transfer Scheme Phase 2            Environmental Impact Assessment




annex_pubpart_springF3                                                              Page F-7   Final Report - October 2002

				
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