Presentation on theme: "EIA for Proposed Desalination Plant at Mile 6, Swakopmund Specialist Workshop, 20-21 April 2009 Abiotic Coastal/Shoreline Dynamics 20 April 2009 Andre."— Presentation transcript:
EIA for Proposed Desalination Plant at Mile 6, Swakopmund Specialist Workshop, 20-21 April 2009 Abiotic Coastal/Shoreline Dynamics 20 April 2009 Andre Theron Council for Scientific and Industrial Research
N S N S Trench will potentially induce off-shore rip current during construction period when waves high or strong on-shore wind. Large open trench will disrupt natural sed. transp. patterns. Will trap part of local transport – potential temporary partial reduction in sed. feed to downdrift area. Sand dredged from trench during construction period should ideally be fed to adjacent downdrift area. Backfill trench after pipe-laying to prevent permanent risk. 10 ~3 m? 0 to 5 m N S N S 4e. Potential pipeline trench impacts Wave/wind induced current field Trench ~3x3m? Rip current
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