DET NORSKE VERITASTM Report VISUAL MAPPING IN THE BARENTS SEA 2012 STATOIL PETROLEUM AS TOTAL AS GDF SUEZ AS LUNDIN AS REPORT NO./DNV REG NO.: 2013-0022 / 14MSJXA-17 REV 01, 2013-02-28 Det Norske Veritas Report for Statoil Petroleum AS Total AS GDF Guez AS Lundin AS Visual Mapping in the Barents Sea 2012 MANAGING RISK Table of Contents Page 1 EXECUTIVE SUMMARY ................................................................................................................. 1 1.1 Introduction ............................................................................................................................... 1 1.2 Equipment and methodology ..................................................................................................... 2 1.3 Conclusions ............................................................................................................................... 3 2 NORWEGIAN SUMMARY ............................................................................................................... 4 2.1 Innledning .................................................................................................................................. 4 2.2 Utstyr og metodikk .................................................................................................................... 5 2.3 Konklusjoner ............................................................................................................................. 6 3 INTRODUCTION ............................................................................................................................... 7 3.1 Background ................................................................................................................................ 7 3.2 Purpose ...................................................................................................................................... 9 4 MATERIAL AND METHODS ........................................................................................................ 10 4.1 Survey program ....................................................................................................................... 10 4.2 Equipment ................................................................................................................................ 12 4.2.1 Ship and ROV .................................................................................................................. 12 4.2.2 Positioning ........................................................................................................................ 12 4.3 Sampling strategy .................................................................................................................... 12 4.4 Data collection ......................................................................................................................... 14 4.4.1 Data logging system ......................................................................................................... 14 4.4.2 Substrate and fauna registrations ...................................................................................... 14 5 RESULTS .......................................................................................................................................... 17 5.1 Apollo Main (Statoil) ............................................................................................................... 17 5.1.1 General description .......................................................................................................... 17 5.1.2 Sediment characteristics ................................................................................................... 18 5.1.3 Fauna characteristics ........................................................................................................ 18 5.1.4 Conclusion ........................................................................................................................ 19 5.2 Apollo Appraisal (Statoil) ....................................................................................................... 19 5.2.1 General description .......................................................................................................... 19 5.2.2 Sediment characteristics ................................................................................................... 20 5.2.3 Fauna characteristics ........................................................................................................ 20 5.2.4 Conclusion ........................................................................................................................ 21 5.3 Atlantis B (Statoil) ................................................................................................................... 21 5.3.1 General description .......................................................................................................... 21 5.3.2 Sediment characteristics ................................................................................................... 22 5.3.3 Fauna characteristics ........................................................................................................ 22 5.3.4 Conclusion ........................................................................................................................ 23 5.4 Norvarg (Total) ........................................................................................................................ 23 5.4.1 General description .......................................................................................................... 23 5.4.2 Sediment characteristics ................................................................................................... 24 DNV Report No: 2013-0022 Revision No.: 01 Date : 2013-02-28 Page ii of iv Det Norske Veritas Report for Statoil Petroleum AS Total AS GDF Guez AS Lundin AS Visual Mapping in the Barents Sea 2012 MANAGING RISK 5.4.3 Fauna characteristics ........................................................................................................ 24 5.4.4 Conclusion ........................................................................................................................ 24 5.5 Askepott (Statoil) ..................................................................................................................... 25 5.5.1 General description .......................................................................................................... 25 5.5.2 Sediment characteristics ................................................................................................... 26 5.5.3 Fauna characteristics ........................................................................................................ 26 5.5.4 Conclusion ........................................................................................................................ 27 5.6 Drivis (Statoil) ......................................................................................................................... 28 5.6.1 General description .......................................................................................................... 28 5.6.2 Sediment characteristics ................................................................................................... 28 5.6.3 Fauna characteristics ........................................................................................................ 29 5.6.4 Conclusion ........................................................................................................................ 30 5.7 Kramsnø (Statoil) .................................................................................................................... 30 5.7.1 General description .......................................................................................................... 30 5.7.2 Sediment characteristics ................................................................................................... 31 5.7.3 Fauna characteristics ........................................................................................................ 32 5.7.4 Conclusion ........................................................................................................................ 32 5.8 Iskrystall (Statoil) .................................................................................................................... 33 5.8.1 General description .......................................................................................................... 33 5.8.2 Sediment characteristics ................................................................................................... 33 5.8.3 Fauna characteristics ........................................................................................................ 34 5.8.4 Conclusion ........................................................................................................................ 34 5.9 Byrkje Central (GDF Suez) ..................................................................................................... 35 5.9.1 General description .......................................................................................................... 35 5.9.2 Sediment characteristics ................................................................................................... 35 5.9.3 Fauna characteristics ........................................................................................................ 36 5.9.4 Conclusion