DOGGER BANK CREYKE BECK April 2013 Environmental Statement Chapter 12 Appendix A - GEMS Geophysical Survey Report F-OFC-CH-012 Appendix A Issue 1 Chapter 12 Page i 2013 Forewind
DOGGER BANK CREYKE BECK Title: Dogger Bank Creyke Beck Environmental Statement Chapter 12 Appendix A - GEMS Geophysical Survey Report Contract No. (if applicable) Forewind Document Number: F-ONC-CH-012 Appendix A Issue No: 1 Issue Date: 19-Oct-12 Status: Issued for 1st. Technical Review Issued for PEI3 Issued for 2nd. Technical Review Issued for Application Submission Prepared by: GEMS Survey Ltd. Approved by: GEMS Survey Ltd. Checked by: (Forewind) Sophie Barrel Signature / Approval (Forewind) Approval Date: 1-Dec-12 Gareth Lewis Revision History Date Issue No. Remarks / Reason for Issue Author Checked Approved 19-Oct-12 1 Issued for Approval GEMS F-OFC-CH-012 Appendix A Issue 1 Chapter 12 Page ii 2013 Forewind
GEMS International Group of Companies Geotechnical, Geophysical and Metocean Expertise around the World GEOPHYSICS RESULTS REPORT VOLUME 4 OF 9 DOGGER BANK TRANCHE A ACOUSTIC AND GEOPHYSICAL SURVEY PREPARED FOR FOREWIND LIMITED DOCUMENT REF.: REVISION: 03 19 OCTOBER 2012-03 GEMS Survey Limited St. James House, St. James Place, Gains Lane Devizes, Wiltshire, SN10 1FB United Kingdom Registration Number: 3083699 T: +44 1380 735 200 F: +44 1380 735 201 devizes@gems-group.com www.gems-group.com
DOCUMENT CONTROL AND REVISION STATUS Document Title Geophysics Results Report Volume 4 of 9 Project Client Project No. Document Ref. Dogger Bank Tranche A Acoustic and Geophysical Survey Forewind Limited GSL10109 Revision No. 03 Document Distribution Copy Number Distributed to Date Master GEMS Server 19 October 2012 1 GEMS 19 October 2012 2 This report is copy number: Signed: Revision History Date Orig. Chk. Appr. Client 00 Draft 20 September 2011 JMO/LJE/JTI JST 01 Issue to Client for Review 23 September 2011 JMO/LJE/JTI JST PHA 02 Issue to Client After Review 17 February 2012 JMO/LJE/JTI JST PHA 03 Issue to Client After Review 19 October 2012 JMO/LJE/JTI BBR PHA Signatory Legend: JMO Joseph Morris LJE Louise Jemmett JTI Jenny Tippin JST Jon Steer JMO Joseph Morris BBR Ben Barton PHA Phil Hayles The following personnel are the designated contacts for any queries regarding this document: Name Job Title Email Telephone Heath Turck Project Manager Heath.Turck@gems-group.com +44 1380 735 200 Ed Weare Project Manager Ed.Weare@gems-group.com +44 1380 735 200 GEMS International Group of Companies i
TABLE OF CONTENTS 1. INTRODUCTION... 1 1.1 Project Overview... 1 1.2 Objectives... 2 1.3 Document Overview... 2 1.4 Forewind Client Feedback GEMS Response... 3 2. SCOPE OF WORK... 9 2.1 Site Definition... 9 2.2 Line Plans... 10 2.3 Equipment... 11 2.4 Simultaneous Operations... 11 3. PROJECT CONTROL... 14 3.1 Horizontal Datum... 14 3.2 Vertical Datum... 14 3.3 Time Datum... 16 3.4 Units Datum... 16 4. BATHYMETRY... 17 4.1 Depths... 17 5. SEABED FEATURES... 22 5.1 Sediment Overview... 23 5.2 Sediment Transportation... 32 5.3 Existing Infrastructure... 37 5.4 Contacts... 39 6. SUB-BOTTOM GEOLOGY... 47 6.1 Unit a... 49 6.2 Unit b... 49 6.3 Unit c... 51 6.4 Unit d... 54 6.5 Unit e... 54 6.6 Unit f... 55 6.7 Unit g... 55 7. GEOPHYSICAL AND HYDROGRAPHIC INTERPRETATION... 58 7.1 Overview... 58 7.2 Slopes... 59 7.3 Near Surface Geological Discussion... 62 7.4 Sediment Sampling and In-Situ Testing... 74 8. POTENTIAL HAZARDS... 75 8.1 Shallow Gas... 75 8.2 Potential Peats... 77 8.3 Faults... 78 8.4 Small Bodies of Sand... 78 GEMS International Group of Companies ii
8.5 Channels / Soft Channel Infill... 79 8.6 Cobbles / Boulders... 79 8.7 Surface Obstructions... 79 LIST OF FIGURES Figure 1 Dogger Bank Zone...1 Figure 2 Lines Run by Kommandor Jack... 13 Figure 3 Lines Run by Aquarius... 13 Figure 4 Grid of fictional tidal stations... 14 Figure 5 Tidal Level Contours... 16 Figure 6 Colour banded bathymetry overview of Tranche A... 17 Figure 7 Shallow sandwaves observed in the bathymetric dataset.... 18 Figure 8 Bathymetric profile across symmetrical sandwaves.... 19 Figure 9 Low relief flat area, with WD 20-25m observed in the East of the Tranche A site.... 20 Figure 10 Depths of 30m-40m in southeast of site, highlighting the base of the valley forms.... 21 Figure 11 Depths of 30-40m along northwest boundary, delineating the base of valley forms... 21 Figure 12 Adapted Folk Sediment Classification... 23 Figure 13 SSS record of stiff clay with frequent cobbles and occasional boulders.... 24 Figure 14 Predominance of sand across the Tranche A site... 25 Figure 15 SSS record of sand... 26 Figure 16 SSS record of stiff clay (occasional) and gravel... 27 Figure 17 Megaripples observed in the SSS mosaic... 28 Figure 18 SSS record of mixed sediment classification... 29 Figure 19 SSS record of mixed sediment classification... 30 Figure 20 SSS record of isolated gravel patches... 31 Figure 21 SSS mosaic of gravel patches... 31 Figure 22 Megaripple variations... 33 Figure 23 SSS record of sediment migration, 03 December 2010... 34 Figure 24 SSS record of sediment migration, 21 December 2010;... 34 Figure 25 Areas of sandwaves identified in bathymetry (encircled in black)... 35 Figure 26 Sandwave direction, wavelength and amplitude... 36 Figure 27 Sandwave direction, wavelength and amplitude... 36 Figure 28 Magnetometer detected gas pipeline... 37 Figure 29 SSS mosaic of the detected SEAL gas pipeline... 38 Figure 30 Isolated Boulder (3.1x1.5x0.7m).... 39 Figure 31 Boulder Cluster (image extent 50 x 90m).... 40 Figure 32 Trawling activity in evident in gravel sediment... 41 Figure 33 Trawl scar termination at sediment boundary.... 42 Figure 34 Wreck (ID 1000) identified in the bathymetric data (top) and SSS record (bottom)... 44 Figure 35 Wreck (ID 1001) identified in the bathymetric data (top) and SSS record (bottom)... 45 Figure 36 Wreck (ID 1002) identified in the bathymetric data (top) and SSS record (bottom)... 46 GEMS International Group of Companies iii
Figure 37 Geological schematic of Interpreted Sub-seabed Geology in Tranche A.... 47 Figure 38 Shallow sub-bottom profile showing Unit a overlying Unit b.... 49 Figure 39 Shallow sub-bottom profile showing the sand waves with exposed Horizon B.... 49 Figure 40 Base of Unit b (depth in metres bsb)... 50 Figure 41 Thinning of Unit c in localised area of faulting;... 51 Figure 42 Acoustically transparent and chaotic internal structure of Unit c... 52 Figure 43 Base of Unit c (depth in metres bsb)... 53 Figure 44 Spatial illustration of depth BSB (m) to Horizon E, the base of Unit e... 55 Figure 45 Spatial illustration of depth BSB (m) to Horizon F, the base of Unit f. The red polygon depicts the area disturbed by faulting... 56 Figure 46 Representative sparker interpreted profile... 57 Figure 47 Overall Spatial Representation of Sediment Types in Tranche A... 58 Figure 48 Site slope values (degrees from horizontal) which highlights the valley locations... 60 Figure 49 Valley profile B-B (as indicated in Figure 48)... 61 Figure 50 Shaded colour depth BSB to Horizon B, interpreted to mark the surface of Unit c... 62 Figure 51 Colour banded illustration of bathymetry across Tranche A... 63 Figure 52 Zone A as defined from Seabed Features Interpretation... 64 Figure 53 Pinger SBP profile of Unit b overlying Unit c with evident seabed valleys... 64 Figure 54 Pinger SBP profile of sub-cropping/outcropping Unit c with incised Unit ci... 65 Figure 55 Bathymetric image of observed bedforms.... 65 Figure 56 Zone B as defined from the Seabed Features Interpretation... 66 Figure 57 Shaded colour bathymetry with delineated gravel boundary located within a valley... 67 Figure 58 Sub-bottom profile showing sandwaves overlaying Unit c and seabed valleys coincident with outcrops of Unit c... 67 Figure 59 Zone C as defined from Seabed Features Interpretation... 68 Figure 60 Shaded colour bathymetry with delineated gravel boundary located within valley... 69 Figure 61 Shallow SBP profile showing surface geology within Zone C as found to the north... 69 Figure 62 Shallow SBP profile showing surface geology within Zone C as found in the west... 70 Figure 63 Shallow SBP profile showing surface geology within Zone C as found in the southwest... 70 Figure 64 Zone D as defined from Seabed Features Interpretation (South)... 71 Figure 65 Zone D as defined from Seabed Features Interpretation (West)... 72 Figure 66 Zone D as defined from Seabed Features Interpretation (North)... 73 Figure 67 Shaded colour bathymetry with the delineated Unit c exposure boundary coincident with a topographic valley... 73 Figure 68 Shallow sub-bottom profile showing the sub- outcrop of Unit c... 74 Figure 69 Shallow SBP profile showing sub-outcrop of Unit c and correlation with valley topography... 74 Figure 70 Profile showing apparent reverberation and acoustic blanking associated with gas presence. 75 Figure 71 Spatial illustration of the high amplitude anomalies observed across the site... 76 Figure 72 High amplitude anomalies present... 77 GEMS International Group of Companies iv
LIST OF TABLES Table 1 Report Volumes...2 Table 2 Dogger Bank Zone Coordinates...9 Table 3 Tranche A Boundary Coordinates (created from rev 1 line plan)...9 Table 4 Met Mast Locations...9 Table 5 Simultaneous Operations... 12 Table 6 Geodetic Parameters... 14 Table 7 Tidal Heights... 15 Table 8 Sediment Transport Definitions... 32 Table 9 Wrecks As found... 43 Table 10 Observed Depths of Geological Units... 48 Table 11 Slope Categories... 59 Appendix A Seabed Features Target Database Appendix B Figure Base Map LIST OF APPENDICES GEMS International Group of Companies v
GLOSSARY OF TERMS AND ABBREVIATIONS A list of abbreviations that may have been used within the main body of the report λ Wavelength ATT Admiralty Tide Table BSB Below Sea Bed C-O Computed - Observed CAD Computer Aided Design CM Central Meridian CPT Cone Penetrometer Testing DF Dual Frequency DGPS Differential Global Positioning System GSL GEMS Survey Ltd GPS Global Positioning System HAT Highest Astronomical Tide HF High Frequency HSE Health Safety and Environment KHz Kilohertz km Kilometre LAT Lowest Astronomical Tide LF Low Frequency m Metre MBES Multibeam Echo Sounder MRU Motion Reference Unit MSL Mean Sea Level MV Motor Vessel OPM Offshore Project Manager OTS Over the Side QA/QC Quality Assurance / Quality Control QINSy Quality Integrated Navigation System SBP Sub Bottom Profiler SSS Side Scan Sonar SVP Sound Velocity Profile UK United Kingdom UTC Universal Time Co-ordinated UTM Universal Transverse Mercator WD Water Depth (corrected to LAT) WGS84 World Geodetic System 1984 GEMS International Group of Companies vi
1. INTRODUCTION 1.1 Project Overview GEMS Survey Ltd. (GEMS) were contracted by Forewind Limited (the Client) to undertake a bathymetric and geophysical survey of the Tranche A development area and two met mast locations (which were later revised) within the Dogger Bank Zone, in addition to a cable reconnaissance from Tranche A to the Yorkshire coastline. The Dogger Bank Zone is located 122km off the coast of Yorkshire and extends to the median line between UK and European waters, as illustrated in Figure 1. Figure 1 Dogger Bank Zone Tranche A is an area of approximately 2000km 2 and lies in the southwest section of the Dogger Bank Zone. The Tranche A and met mast surveys comprised acquisition of side scan sonar, sub-bottom profilers, bathymetric, acoustic ground discrimination (AGDS) and magnetic anomaly data. The cable reconnaissance survey consisted of bathymetric and sub-bottom profilers. GEMS International Group of Companies 1
1.2 Objectives The primary objectives of the survey were to produce sufficiently high resolution bathymetric and geophysical data and interpretations to allow regional interpretation for planning and modelling purposes; for met mast design to commence and to provide high quality data to inform further benthic and environmental surveys. These objectives were met by acquisition of the following datasets: Bathymetric data to establish the site depths and bathymetric profiles. This data is also used for acoustic ground discrimination (ADGS), in order to identify different environmental habitats and sedimentation patterns at the seabed to inform the design of the environmental survey. Side scan sonar to identify any seabed features and verify the position of existing infrastructure (e.g. pipelines), with a particular emphasis on identifying hazards to future engineering works, and to inform the design of the environmental survey and of appropriate ground truthing locations. Sub-bottom profiler data in order to characterise in high resolution the stratigraphy of the site to a minimum depth of 50m below seabed. This was achieved by utilising both pinger and sparker profilers, and the characterisation placed particular emphasis on identifying hazards, such as gas charged bodies and faults, to future engineering works, and to identify suitable locations for subsurface sampling. Magnetic data to verify the position of existing infrastructure and identify any unknown ferrous bodies that may pose an obstruction or hazard to future engineering works. Drop down camera transects to allow seabed habitat classification (at met mast locations). 1.3 Document Overview The reporting of this survey campaign has been broken down in to aid accessibility. The full listing of all final reports is available in Table 1. Table 1 Report Volumes Volume Description Document Reference 1 Operations Report: MV Aquarius GSL10109-OPS-001 2 Operations Report: MV Kommandor Jack GSL10109-OPS-002 3 Processing and Interpretation Report GSL10109-OPS-003 4 Geophysical Results Report 5 Original Met Mast W Report GSL10109-GPH-OF002 6 Original Met Mast X Report GSL10109-GPH-OF004 7 Alternate Met Mast W Report GSL10109-GPH-OF006 8 Alternate Met Mast X Report GSL10109-GPH-OF007 9 Cable Route Reconnaissance KP Descriptions GSL10109-GPH-OF003 GEMS International Group of Companies 2
1.4 Forewind Client Feedback GEMS Response The following Client Feedback / Response was issued 22nd February 2012: The following client comments have been addressed along with the report and charts. Missing volumes Delivered to client on 27 th January. Volume 1 Operations report M/V Aquarius Volume 2 Operations report MV Kommandor Jack Volume 3 Processing and interpretation report Multibeam Bathymetry Data The multibeam bathymetry data displayed evidence of minor tidal correction discrepancies, the result being stripy looking data grids with differences of over 0.5m identified between some lines (Figure 1). This does not significantly affect the appearance of large scale features, but could make identification of smaller objects such as small wrecks problematic, especially if such features cross between survey lines. Even if such features can be identified, any absolute depth readings taken would be inaccurate. The tidal correction problem also makes the provided gradient analysis spurious, as the only real areas identified by this analysis are the data steps observed between survey lines. Additionally, one file (DBA_425_6070) appears to have data missing, both from the.sd files and the original.xyz file. All depth readings below -32.8m are not present, meaning data from a significantly large area of this section of Tranche A is missing from the data supplied to WA. Please add any abbreviations to the glossary - and refer to LAT Please take section 6.2.1 Zone A to 6.2.4 Zone D and place it in here with each section split into Bathymetry, Seabed Features including sediment transport and near subsurface soils these should incorporate all the relevant sections of bathymetry and seabed features & sediment transport that are currently in separate sections because there is a huge amount of duplication. For example Figure 7 and 47 are the same! Please move part of section 6 to here call it 'Geophysical and Hydrographic Interpretation' - then section 6.1 Overview with Figure 41 and Figure 44 the zones of similarity are the best way to describe the bathymetry and seabed features of the region. This does not match the 'as supplied' slope information' there are a huge number of artefacts in the data which suggest slopes of in excess of 30 degrees. Please define how the slope information was derived and the filters used to remove the artefacts in order to get this information out Acknowledged and agreed but data reduced by predicted tides resulting in these errors. GEMS now operate using real time tidal corrections. Corrected and to be delivered to client in the final data drop. WD added to glossary. Vertical datum section states that all depths are corrected to LAT. Duplicate Figure removed. Each system / dataset has been introduced prior to the detailed zonal section. For clarity the whole document cannot be discussed in zones as the same features would need to be introduced for each zone, an overview prior to the zones is preferred. This has been discussed with Leo James. Some reconfigurations of the sections have been made to help clarify and avoid duplication. Bathymetry is introduced for the whole area described in water depths of 10-20, 20-30, etc then in detail in the zones of similarity (as above comment). The slope image in Figure 12 is a result of data that has been gridded at a larger (10m bin) interval than in the data issued digitally (1m bin). This explains why there appears to be slopes in excess of 30 degrees in the supplied 5km x 5km block digital data. A comment to this affect has been added to the report to explain the process. Sidescan Sonar Data The sidescan sonar data were provided as.xtf files. Although no survey or operations report were provided, the survey logs indicate that the data were positioned using a mixture of a cable counter and USBL data and the positioning appears to have been included with the data files. A number of problems were encountered with the sidescan sonar data, though judging by the quality of the mosaics created by GEMS (provided as images), it is unclear whether this is a reflection of the data quality itself or is an artefact of how Coda has visualised these particular files. There appears to be a problem with the navigation in All data acquired using USBL positioning but cable counter recorded as standard practice and for verification purposes. The GEMS in house software InfoX was utilised for SSS processing. Online acquisition is set up with the strings necessary for InfoX processing. The processed xtfs were exported from InfoX and have a slightly reduced resolution to that in InfoX. The final navigation used to generate the mosaics is GEMS International Group of Companies 3
most of the files which prevents the data being displayed correctly in mosaic. However, this again can be corrected for by a number of processing steps. Although this processing flow does not take a particularly long time to work through for an individual file, the sheer number of files for this project would mean a significant amount of extra processing time would be required to correct all of the files should further interpretation work be deemed necessary. The sidescan sonar data itself is often very spiky, causing problems when attempting to equalise the gains and display the data. Additionally, the speed of sound in water for the survey seems to have been recorded incorrectly, as the data files show a range that is twice that recorded in the survey logs. Additional to the data display problems, the data itself appears of an average quality, with a degree of sea surface noise, interferences from other equipment and snatching visible on many of the records viewed. Further differences in interpretation processes were highlighted during the gap analysis. The first were two anomalies, one a large contact 5m high and the other a depression 7m deep (GEMS ID DBA_S3130 and DBA_S1314 respectively), that could not be identified at their given positions on the sidescan sonar data, nor could they be identified on the multibeam bathymetry data. This suggests either a positioning or measurement error, but either way highlights inconsistencies between two different interpretation processes. identical to that included in the processed xtfs. It is unfortunate that you have to take additional steps to read in the data correctly. If the format of the xtfs is incorrect then please give further feedback so our software developer can address this. Similar corrections have been made during processing. Variable gains believed to be a function of the influence of the towed magnetometer and associated cabling, which causes the fish to list, and also the variable currents experienced. This problem has been identified. The XTF header has been populated with the correct speed of sound 1507m/s however it appears that some packages do not take TWTT into account. The velocity will be halved in the headers for the next issue of the data to ensure that it reads into Coda correctly providing the correct range. Surface noise and cable snatch is apparent in some cases and is unfortunately unavoidable in shallow water (with undamped small cable outs), particularly when operating in marginal weather. Interference is also an issue as the cable out in shallow water is insufficient to provide separation from the Sparker source. These contacts are visible in the high resolution dataset of InfoX however the heights are inaccurate and have been revised to 2.7 and 3.4 for S3130 and S1314, shown as follows (both close to the water column) Furthermore, it is unclear why a large pipeline clearly identifiable on both the sidescan sonar and multibeam bathymetry data was not highlighted by GEMS, though it is present in their gazetteer of magnetic anomalies. Any other anomalous target sizes have been verified. The pipeline and 2 cables have been digitised as part of the geophysical interpretation and has been included in the charts. It appears that this digitisation may have been omitted from the latest shape file delivery. This has now been included. Sub-Bottom Profiler Data The pinger data is of good quality and shows shallow features in high resolution. Despite this, however, one problem was encountered. The Kingdom projects were provided in a number of blocks. Of these, Block 3 appears to be of significantly lower quality than the others, with very little penetration, poorer resolution and a higher degree of background noise. Given the good quality of the other data, it is possible that this is the result of the use of a different processing sequence and is not a reflection of the data itself; though without raw data this cannot be verified. During the review of these data sets, a number of features/layers of potential archaeological interest (e.g. small channels, possible peat layers) appear to have been omitted from the provided interpretation (Figure 3). This would obviously prove problematic For the duration of Block 3 the Aquarius was utilised. The initial set up onboard was a 2x2 pinger array as the moonpool was adapted to carry both the pinger elements and the MBES system. The pinger data was identified to be of poor quality in relation to the Kommandor Jack and the onboard systems were later reconfigured to allow the installation of a 4x4 array, to match the Kommandor Jack. The high data quality, data volume and geological complexity limited the interpretation of the dataset to the critical lithostratigraphy. Attempts were made to identify shallow GEMS International Group of Companies 4
were this interpretation solely used for an archaeological review. It is understood that the provided interpretation was not the final version, though the frequency with which such features were omitted suggest they would also be missing from the final interpretation, as whilst they are of archaeological importance they may not be critical to defining the lithostratigraphy and associated geotechnical attributes. Following investigation of the GEMS geophysical survey report, the major concerns regarding the interpretation presented are a series of channels that do not appear to have been identified. Sub-Surface Geology Interpretation Unit b A number of instances of missing data are marked on the unit b isopach provided. However, there is no mention of how much data is missing. This information should be contained within the report. Other areas in unit b are marked Uninterpretable in record. GEMS define unit b as Holocene sediments. In this area, Holocene sediments are generally sandy in nature (see BGS Swallow Hole and California Quaternary Geology charts). Figure 64, in the GEMS geophysical survey report, presents the interpreted base of unit b. An area of approximately 170 km2 in the central east of the Tranche is labelled Horizon B main lines not interpretable. The relevant isopach shapefile provided, shows large areas where unit b has not yet been interpreted by GEMS. On page 65 of the GEMS geophysical survey report it states that: The depth of the horizon in the centre of Zone A is beyond the penetration of the pinger and can be seen as a very shallow horizon in the Sparker data. If this is the case then unit b should be interpreted from the sparker and not the pinger data. As it stands there is no information concerning the thickness of the top sedimentary unit for a large proportion of the Tranche. It seems likely from reading the zonal survey and geotechnical reports that these areas marked uninterpretable in record correspond to the shallow channel system observed by Gardline and the sandy unit recorded in geotechnical samples recovered by Fugro. Horizon B recognised as likely Bligh Bank Sands only top section of the Holocene sequence included within GEMS interpretation - additional work has been completed on Holocene sands section report and latest image included for reference. Unit c Figure 67, in the GEMS geophysical survey report, displays the interpretation of Horizon C (the interpreted base of unit c ). The stated scale is Depth in metres. It is assumed that this refers to depth below seabed (mbsb). However, this requires clarification. It is also noted that the displayed depth range is 15 to 60 m and that at times the horizon is interpreted to be within <1 m of the seabed. These two ranges are contradictory. If the base of unit c shallows to within 1 m of the seabed then it follows that it must be present between 15 and 1 m. However, this horizon does not appear to have been interpreted at these depths. It is also noted that Horizon C (base of unit c ) is interpreted as not present over an area of approximately 180 km2 in the west of Tranche A. From investigation of the isopach C shapefile, provided, it is apparent that Horizon C is interpreted at between 25 and 35 mbsb on the boundary between presence/absence of unit c. This implies that, in this location, unit c is truncated at depth and replaced in the sedimentary column by another unit. GEMS explain this by suggested glacial faulting (see p. 67). However, the OMM geologist is sceptical of this interpretation for a number of reasons: not least because in the zonal survey, Gardline identify a major channel at this location. In any case, the interpretation presented by GEMS is not consistent with truncation via faulting. features but we appreciate we may have omitted the interpretation of features critical to archaeological review. Further insight into archaeological surveys has been beneficial to GEMS development. In future projects more time will be set aside to achieve this. The missing lines are to be identified clearly in the charts so that remaining interpretation gaps correspond to uninterpretable alone. Data has been interpreted in a conservative way to try to avoid misinterpretation, in areas where horizons are unclear. This has a significant effect on the areas acquired with the 2x2 array. It is acknowledged that Forewinds have continued the interpretation in these areas. Attempts were made to use the sparker data to complete the pinger interpretation however the wide seabed pulse, which overwrites the data, and the increased wavelength of the data made accurate delineation too difficult to continue. See previous comment regarding shallow features. GEMS acknowledge this discrepancy in light of the new interpretation and geotechnics, where horizon B now represents the likely base of the Bligh Bank Sands and Unit A the base of the Holocene sediments. A comment in the report has been added to explain. The scales on all of the depth below seabed images have been checked and tally with the table. Depth below seabed has been stated in the vertical datum section of the report. Faulting of the glacial deposits is observed as most clearly shown in Figure 41. This has now been identified by the BGS study. It is possible that Horizon C occurs at shallower depths but the record is difficult to interpret without geotechnical input. 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From the data presented in the GEMS geophysical survey report, it is noted that the other units interpreted as being present in this location are b, e and f. Unit b is interpreted as being relatively shallow (generally 2 4 m, though with a maximum thickness of 14 m in the far west). It is difficult to assess the thicknesses of units e and f as OMM have not been provided with isopachs for these. However, using values based on figures 68 and 69 in the GEMS geophysical survey report, unit e has a minimum depth value of 100 mbsb and unit f seems to have a depth of somewhere between 15 and 50 mbsb (from the symbology used in Figure 69 it is very hard to tell). GEMS interpret unit c as the Dogger Bank Formation, unit e as the Yarmouth Roads Formation and unit f as the Swarte Bank Formation. Of these, the Dogger Bank Formation is the most recent, followed by Swarte Bank Formation, with the Yarmouth Roads Formation the oldest. Again the scales on all of the depth below seabed images have been checked and tally with the table. Unit e is in fact the Swarte Bank formation and Unit f the Yarmouth Roads. BGS checking/re-mapping GEMS horizon C within Tranche A First activity was to identify large buried mound that sits atop horizon C (Fig 1) and to separate it from actual horizon C. Feature is clearly distinct. Unfortunately there is no core atop the mound to test its composition. o We ve made a separate, coarse interpretation of this feature and removed it from the GEMS Horizon. (Fig 2) Picking discrepancies: The next task was to check the GEMS horizon and try and fill in blank areas where the interpretations had not made. This analysis revealed a fair amount of inconsistency in the GEMS pick but also the complexity of mapping the base Dogger Bank. Rather than correct their horizon, we decided to create a new coarse (every 5-10 lines) in the interest of time. o This horizon is intrinsically difficult to map due to regular interference of seabed multiple. o Summary: We believe that what they have mapped as C is largely the Top of Egmond Ground (EG), rather than base Dogger Bank (DB). Where they have mapped base Dogger Bank, they have not mapped the top Egmond Ground. We have gone back and mapped this horizon in this area (Fig 3). We suggest that the base DB is often a weaker reflector than top EG. According to several boreholes (eg 1014), there is an irregular sand body sitting between what is presumably EG and DB. Laterally, it is of varying thickness 0-20m). (Fig 4). So where this unit is absent (or can t be distinguished on seismic), the GEMS C horizon is the base DB. We have begun to coarsely map the base DB, where GEMs have only mapped the top EG (Fig 5). I ve done a quick difference map (Fig 6) Colour scheme on seismic interpretation: Pink (GEMS horizon C); Purple (BGS interpreted top Egmond Ground); Red (BGS reinterpreted base Dogger Bank); Yellow (Seabed and seabed multiple); light blue (GEMS D); dark blue (GEMS E - Swarte Bank). Channels: Sometimes GEMS pick channels dropping off top EG, and sometimes they draw straight line across. In our re-mapping exercise, we will not incorporate channels into our re-interpretation of the base DB. Blank Areas: We broadly find that areas they have not mapped are either due to presence of channels, or deformation in the DB which has deformed underlying units as well. As a note, this deformation of underlying units is quite common. GEMS value the feedback received from Forewinds. The potential Esker mound is of particular interest and was not reported during the interpretation of the main stratigraphic units. GEMS appreciate that the interpretation is evolving and that mistakes have been made due to the complexity of picking the base of the Dogger Bank. An additional explanation has been added to the report to reflect this. We find often that it is possible to coarsely trace across these areas joining reflectors either side. But it should be noted that the geotechnical properties within these zones will almost certainly be different from undisturbed strata. GEMS International Group of Companies 6
The following Client Feedback (to Rev.2 of this report, February 2012) was subsequently received 8 th October 2012, with comments incorporated into the current document. Document Geophysical Survey Report - Document Review GEMS International Dogger Bank Tranche A:- Acoustic and Geophysical Survey Geophysics Results Report Volume 4 of 9 Document No. Revision 2:- Issue to Client after review Date of issue 17 th Feb 2012. By:- RAB Date:- 5 th October 2012 Approved:-LJ Date:-8 th October 2012 Overall Comments There has been considerable development of the geological model, however what is presented is fair reflection of what is present and has contributed significantly to the development of the model. There needs to be a consistent approach to the report as regards naming conventions, text and Figure presentation. Page Section Location Comment Action General When discussing directions e.g. section 4.1.2 Correct throughout South East write as southeast (all one word). Other points of the compass should be written as south and SSE etc. General All figs that include sonar data need an along Add throughout. track and cross track scale. Mosaic data examples will need a scale. General All figs that include examples of the seismic data Add where applicable. need a vertical scale in metres. At the very least it needs to be annotated what the vertical scale is(two way time but preferably meters). 2 (new) 1.4 New section Can you insert the document dated 22 nd Feb 2012 as section 1.4 and give it the same title ie.. Add. Response is acknowledged. Forewind Client Feedback GEMS response vii glossary WD Water Depth (corrected to LAT) add 1 1.1 3 rd para. 1 st Sub-bottom profiles should read Sub-bottom correct sentence profilers 4 2.2.3 1 st para Survey data for Alternate Mast West (previously correct W) 4 2.2.3 2 nd para Survey data for Alternate Mast East (previously correct X) 17 5.1 3 rd para, last.but stiff clay. correct sentence 18 5.1.1 New section Insert section title Stiff clay outcops add 21 5.1.2 New section Insert section title Stiff clay and gravel add 22 5.1.2 3 rd para, 1 st Change boulder clay to stiff clay correct sentence 23 5.1.3 New section Insert section title Mixed sediments add 25 5.1.4 New section Insert section title Gravel patches add 26 5.2 Table 8 Add λ to the Glossary as Wavelength add 29 Fig 25 Add an X to mark location of figs 26 and 27 and add annotate relevant X 31 5.3 1 st para, 2 nd Sub bottom profiler dataset but should be correct sentence changed to and 31 5.3 2 nd para,2 nd Anomaly amplitudes should be changed to correct sentence magnetic anomalies 32 Fig 29 SEAL should be in capitals Correct also in List of Figs page iv. 32 5.3 2 nd para, 2 nd Anomaly amplitudes should be changed to correct sentence magnetic anomalies 32 5.3 3rd para, 2 nd Anomaly amplitudes should be changed to correct sentence magnetic anomalies 32 5.3 4 th para Place these details into a table. Along with as amend given and as found positions 33 5.4.1 1 st para, 1 st 3 identified wrecks discussed in section 0 correct GEMS International Group of Companies 7
Page Section Location Comment Action sentence should be section 5.4.3 34 5.4.2 1 st para Move to next page so it goes with the trawl scar amend figs 37 5.4.3 Table 9 In the coloumn header Height. (Depth) should be correct changed to (m) 41 6 Fig 37 Change cartoon to schematic needs to be amend done in the Figure list as well on page v. 41 6 2 nd para, 1 st Delete the s on the end of Forewinds correct sentence 41 6 3rd para, Shouldn t it be Dave Long not Brian Long? Check. last sentence 46 6.3 3 rd para. Formation should have a capital F Correct all 6 56 7.3 2 nd para. 2 nd 2 examples were boulder clay should read stiff correct sentence clay 56 7.3 2 nd para. 3rd Change higher water depths to greater water correct sentence depths 56 7.3 3rd para. Beginning the relative benign. Move so it amend comes after Fig50 56 Fig 50 Add note as in fig40 regards uninterpretable add section. 58 7.3.1 2 nd para Mention Botney Cut channels at the surface in add Zone A 59 7.3.1 1 st Para 2 nd Beginning The average amplitude. Remove amend sentence this but ensure it is covered in the SBF section. 59 7.3.1 2 nd para. 2 nd Beginning the bathymetry indicates amend sentence Remove this but ensure it is covered in the bathy section. 60 7.3.2 2 nd para. 5 th Remove the word thin from in front of veneer, amend sentence a veneer is by definition, thin. 60 7.3.2 4 th para Beginning few sonar contacts Remove this amend but ensure it is covered in the SBF section. 61 7.3.2 2 nd para 1 st Rewire to focus less on bathy.suggest amend and 2 nd sentences Sandwaves are present only in 20% of the zone, mainly in the shallow areas 63 7.3.3 1 st Para Beginning few sporadic sonar contacts amend Remove this but ensure it is covered in the SBF section. 63 7.3.3 3 rd para, 2 nd Beginning the average amplitude Remove amend sentence this but ensure it is covered in the bathy section. 66 7.3.4 3 rd para, 1 st, again oriented with the flow regime should be correct sentence orientated 68 7.3.4 1 st Para Beginning There are few. Remove this but amend ensure it is covered in the SBF section. 71 Check page numbering as there are two page Amend 71 s. 73 8.6 2 nd para, 2 nd sentence the interpreted Dogger Bank Formation capital F correct GEMS International Group of Companies 8
2. SCOPE OF WORK 2.1 Site Definition 2.1.1 Tranche A The Dogger Bank Zone, and Tranche A are defined by the coordinates (WGS 84, UTM 31N) in Table 2 and Table 3. Easting Table 2 Dogger Bank Zone Coordinates Northing 523 881.1 6 183 076.0 502 040.7 6 089 767.1 467 043.0 6 090 568.5 434 004.7 6 057 358.8 411 989.4 6 066 904.4 412 294.9 6 079 765.6 392 151.4 6 081 206.0 402 499.1 6 131 390.2 Table 3 Tranche A Boundary Coordinates (created from rev 1 line plan) Easting Northing 397 420.0 6 106 757.6 427 575.2 6 106 757.6 459 949.8 6 083 438.6 434 004.7 6 057 358.8 411 989.4 6 066 904.4 412 294.9 6 079 765.6 392 151.4 6 081 206.0 2.1.2 Met Mast Locations The Met Mast locations are 1km by 1km surveys based around the locations in Table 4, provided in WGS84, UTM Zone 31N. Table 4 Met Mast Locations Met Mast Easting Northing Original Met Mast W 413 469 6 083 203 Original Met Mast X 459 137 6 097 080 Alternate Met Mast West (previously W) 424 267 6 080 624 Alternate Met Mast East (previously X) 481 017 6 105 899 GEMS International Group of Companies 9
2.1.3 Cable Route Reconnaissance Cable route reconnaissance lines were run during periods of marginal weather when work on Tranche A was not possible. Lines were run at arbitrary 5km intervals within the Project One corridor. No lines were run within the 12 nautical mile limit from the UK coast. 2.2 Line Plans Line plans were provided by RPS, a consultant to Forewind, and were designed to run perpendicular to the expected strike of the geology across the region. The line orientations matched the Zone Wide Survey (ZWS) performed in spring 2011. 2.2.1 Tranche A Survey Main lines were orientated at 43 /223 and spaced at 100m intervals. Cross lines were orientated at 133 /313 and spaced at 500m intervals. All systems were logged concurrently during the single pass survey. 2.2.2 Met Mast Surveys (Original) Surveys were based on a 1km square orientated in-line with the Tranche A mainlines. Main lines were orientated as 43 and spaced at 100m intervals. Cross lines were orientated at 313 and spaced at 150m intervals. All systems were logged concurrently during the single pass survey. A more detailed magnetometer survey was conducted over the 100m immediately surrounding both proposed locations, with line spacing at 10m intervals for both main and cross lines. Environmental surveys were performed via drop down camera work at locations selected from the side scan sonar. 2.2.3 Met Mast Surveys (Alternate) Survey data for Alternate Met Mast West (previously W) was extracted from the main Tranche A survey data, with line spacing as per Tranche A (100m main lines, 500m cross lines). Survey data for Alternate Met Mast East (previously X) was acquired as a separate survey as it is outside of the Tranche A limits. The 1km square was orientated in-line with Tranche A mainlines, and line spacing as per Tranche A. All systems were logged concurrently during a single pass survey. No separate magnetometer survey was performed. No environmental investigations were performed. GEMS International Group of Companies 10
2.3 Equipment A full list of equipment is available in the operations reports; equipment types varied slightly by vessel but the following types of systems were run. 2.3.1 Seabed Topography Information on seabed topography was acquired using the following systems: Singlebeam Echosounder R2Sonic 2024 Multibeam Echosounder SEA SWATHplus interferometry system 2.3.2 Seabed Features Information on seabed features was acquired using the following systems: Edgetech 4200 FS multi-pulse side scan sonar G882 or SeaSpy Magnetometer 2.3.3 Geophysics Information on geophysics was acquired using the following systems: GeoAcoustics Hull Mounted Pinger Geo-Spark 800 Geo-Resources sparker (Geo-Spark 200 as redundant spare), with a TL3 multichannel recording system. 2.4 Simultaneous Operations Both the MV Kommandor Jack and the MV Aquarius undertook acoustic and geophysical operations as part of the Tranche A surveys. Tasks were completed as per Table 5. The terminology used to describe the areas completed by the vessels was Blocks 1 through 4. The Aquarius completing the northern most Block 1 and central Block 3 and the Kommandor Jack an adjacent central Block 2 and southern most Block 4. This is illustrated in Figure 2 and Figure 3. GEMS International Group of Companies 11
Table 5 Simultaneous Operations Single Pass Survey Separate Survey Singlebeam Echosounder Multibeam Echosounder SEA Swath Side Scan Sonar Magnetometer Pinger Sparker Environmental Magnetometer Tranche A Mainlines Tranche A Crosslines Original Met Mast W Original Met Mast X Alternate Met Mast W Alternate Met Mast X Cable Route Reconnaissance KJ/AQ KJ/AQ KJ/AQ KJ/AQ KJ/AQ KJ/AQ KJ/AQ - - KJ (infill only) KJ KJ KJ KJ KJ - - KJ - KJ KJ KJ KJ KJ AQ KJ KJ - KJ KJ KJ KJ KJ AQ KJ KJ/AQ KJ/AQ KJ/AQ KJ/AQ KJ/AQ KJ/AQ KJ/AQ - - AQ AQ AQ AQ AQ AQ AQ - - KJ KJ - - - KJ - - - KJ = MV Kommandor Jack AQ = MV Aquarius GEMS International Group of Companies 12
Figure 2 Lines Run by Kommandor Jack Figure 3 Lines Run by Aquarius GEMS International Group of Companies 13
3. PROJECT CONTROL 3.1 Horizontal Datum Geodetic parameters were specified by Forewind and entered into the online (and other relevant systems) as displayed in Table 6. All Easting and Northings are provided in the working projection (UTM 31). Table 6 Geodetic Parameters Working Spheroid Datum: WGS84 Projection: Spheroid: WGS84 (GRS1980) Conversion Factor to metres: Working Projection Universal Transverse Mercator Zone 31 1.00000 Semi-major, a: 6 378 137.000 Longitude Origin: 003 00 00.000 E Semi-minor, b: 6 356 752.314 Latitude Origin: 0 00 00.000 N Flattening, 1/f: 298.257 223 563 False Easting: 500 000.00 Eccentricity, e 2 : 0.006 694 380 False Northing: 0 Comments/notes Scale Factor on CM: 0.9996 Units: m 3.2 Vertical Datum The vertical datum for this project is LAT using predicted tides. Twenty seven fictional stations were spaced across the site using co-tidal charts on predicted tide from the River Tyne station. The following was supplied to the vessel to enable this to take place: UKHO Admiralty Tide Table NP201-10 UKHO Admiralty Chart 5058 (Co-Tidal / Co-Range North Sea) QINSy Software Figure 4 Grid of fictional tidal stations Predicted tide was calculated for the survey period using harmonics for River Tyne which was the closest primary port to the survey area and also proved to be the most suitable station, as it provided the largest GEMS International Group of Companies 14
tidal range for the co-tidal model calculations. Chart 5058 was then used to calculate the Mean High Water Interval (MHWI) and Mean Spring Range (MSR) for each fictional station. Adjustments for the twenty seven fictional stations using the predicted tide at River Tyne were then made and a linear co-tidal model was built in QINSy which was then applied to the data. LAT and HAT tidal values at each fictional station can be found in Table 7 below. All figures quoted below are in relation to MSL. Table 7 Tidal Heights Station Number Easting Northing LAT (m) HAT River Tyne 216 493 6 103 780-2.96 2.74 9 440 000 6 060 000-1.27 2.45 10 430 000 6 060 000-1.31 2.52 11 420 000 6 060 000-1.38 2.65 15 450 000 6 070 000-1.17 2.25 16 440 000 6 070 000-1.24 2.39 17 430 000 6 070 000-1.31 2.52 18 420 000 6 070 000-1.34 2.58 19 410 000 6 070 000-1.41 2.72 22 450 000 6 080 000-1.10 2.12 23 440 000 6 080 000-1.20 2.32 24 430 000 6 080 000-1.24 2.39 25 420 000 6 080 000-1.31 2.52 26 410 000 6 080 000-1.38 2.65 27 400 000 6 080 000-1.48 2.85 28 390 000 6 080 000-1.65 3.18 30 440 000 6 090 000-1.17 2.25 31 430 000 6 090 000-1.24 2.39 32 420 000 6 090 000-1.27 2.45 33 410 000 6 090 000-1.34 2.58 34 400 000 6 090 000-1.41 2.72 35 390 000 6 090 000-1.55 2.98 37 440 000 6 100 000-1.14 2.19 38 430 000 6 100 000-1.20 2.32 39 420 000 6 100 000-1.24 2.39 40 410 000 6 100 000-1.27 2.45 41 400 000 6 100 000-1.34 2.58 42 390 000 6 100 000-1.48 2.85 GEMS International Group of Companies 15
Figure 5 shows the relationship between LAT and HAT throughout the site depicted in contour form. Again all heights are quoted in relation to MSL. Figure 5 Tidal Level Contours Sub-bottom profiler depths are provided with respect to the seabed. Values for all horizons are stated in metres below seabed (mbsb). 3.3 Time Datum All systems have been interfaced to the DGPS system, with critical systems being linked to the 1 Pulse Per Second (PPS). All systems are set to log in UTC. Daily Progress Reports (DPRs) are in Local Time (BST). 3.4 Units Datum All systems are set to log using the SI (metric) system. All units in this report are in SI units unless quoted otherwise. GEMS International Group of Companies 16
4. BATHYMETRY The bathymetric data set was collected with an R2 Sonic 2024 Multibeam Echosounder interfaced through QINSy and processed using Fledermaus. The following sections provide a brief introduction to the Bathymetry observed across the entire Tranche A site. The bathymetry is then discussed in more detail in the Geophysical and Hydrographic Interpretation, Section 7, where the Tranche A site has been split into similarity zones A through D. 4.1 Depths Figure 6 shows the Tranche A site, colour banded by depth (LAT), as follows: < 20m (red) 20 to 30m (green) 30 to 40m (blue) > 40m (white) Figure 6 Colour banded bathymetry overview of Tranche A The following sections outline the major bathymetric features and characteristics associated with the aforementioned depths bands defined across the site. GEMS International Group of Companies 17
4.1.1 Less Than 20m WD The areas of less than 20m WD predominantly reside in the south and west of the Tranche A site at the summit of the valley forms which can be observed in the locality. Sandwaves are occasionally observed in depths less than 20m. Such occurrences are illustrated in Figure 7 and are centred on 439 404E, 6 076 145N (19.87m WD) and 447 698E, 6 076 727N (19.94m WD). Figure 7 Shallow sandwaves observed in the bathymetric dataset. GEMS International Group of Companies 18
These sandwaves are predominantly symmetrical in cross section as illustrated in Figure 8. Figure 8 Bathymetric profile across symmetrical sandwaves. Centred on 439 404E, 6 076 145N. GEMS International Group of Companies 19
4.1.2 20m-30m WD Depths of 20-30m dominate the site, as illustrated by the green areas of Figure 6. There is a large low relief area of seabed in the Southeast of Tranche A, which shows depths ranging from 20-25m as outlined in Figure 9. 1 km Figure 9 Low relief flat area, with WD 20-25m observed in the East of the Tranche A site. The sandwaves observed across the site are most dominant in this water depth range. The nature of the seabed in WD 20-30m is of relatively low relief in comparison to the features observed at deeper depths. GEMS International Group of Companies 20
4.1.3 30m-40m WD Depths of 30m-40m can be observed towards the base of the valley features to the southeast and northwest, as displayed in Figure 10 and Figure 11 respectively. Figure 10 Depths of 30m-40m in southeast of site, highlighting the base of the valley forms. Figure 11 Depths of 30-40m along northwest boundary, delineating the base of valley forms GEMS International Group of Companies 21
5. SEABED FEATURES Side scan sonar and magnetometer data were reviewed in conjunction with the bathymetric datasets in order to analyse the seabed characteristics. These characteristics include the following: Interpreted sediment type Sedimentary bedforms Sonar contacts Magnetometer contacts Potential hazards at the seabed Side scan sonar data was acquired using an Edgetech 4200MP towfish. Magnetometer data were acquired with a Marine Magnetics SeaSpy or GeoMetrics G882 magnetometer. The magnetometer was towed directly behind the side scan sonar towfish with a layback of 10m. Correlations were then made between identified magnetic anomalies and the side scan sonar record. The figures provided in this and subsequent sections have been provided with a centre position for reference. An accompanying base map to show these locations is provided in Appendix B for spatial reference to the Tranche A site. GEMS International Group of Companies 22
5.1 Sediment Overview Sediments were classified using the character and acoustic reflectivity exhibited in the side scan sonar mosaic record. No ground-truthing was carried out during survey operations. Seabed sediments have been classified using an adapted Folk Classification (R.L. Folk, 1954) as shown in Figure 12. Additional major sediment types of Tranche A are also shown at the base of the Folk triangle which have been agreed with RPS QC representatives. The major sediment types are discussed in this section but are then discussed spatially in the Geophysical and Hydrographic Interpretation, Section 7, where the Tranche A site has been split into similarity zones A through D. Figure 12 Adapted Folk Sediment Classification The stiff clay category has been revised for the second issue of the report and charts. Boulders were not detected in the sub bottom record, nor the follow up geotechnical campaign. When observed at the seabed it is cobbles which dominate the course sediments observed at the seabed not boulders, which are occasional. For these reasons it is therefore no longer classified as a Boulder Clay but stiff clay with cobbles and boulders (or varying frequency). GEMS International Group of Companies 23
The following sonar record waterfall displays and mosaics are indicative of the acoustic characteristic of the sediment classifications. For scale the blue range lines are 20m apart. The along track scale is the same. 5.1.1 Stiff Clay Outcrops 20m N Figure 13 SSS record of stiff clay with frequent cobbles and occasional boulders. Line DBA10AQM140901A; centred on 421 412E, 6 073 345N Figure 13 typifies an acoustically rough area of seabed classified as stiff clay with frequent cobbles and boulders, where reflectivity varies greatly over a short range, giving an overall high relief. As can be observed in this Figure there are frequent patches of sand and gravel, too small to be digitised, which reside within the stiff clay areas. Both boulders and cobbles of differing frequency are observed within these areas. The stiff clay areas have been split into frequent and occasional depending on the seabed surface occurrence of cobbles and boulders. The frequent areas have numerous point contacts within them; the majority of which are boulders and these have been chosen due to their appreciable magnitude, readily measurable in the side scan sonar record. GEMS International Group of Companies 24
Although the stiff clay is of highest relief in the sonar record it is sand which is the main sediment classification of the Tranche A site, covering over 85% of the total area. Figure 14 illustrates the predominance of sand (yellow) in comparison to the remaining sediment types in black. Figure 14 Predominance of sand across the Tranche A site GEMS International Group of Companies 25
Figure 15 shows the acoustic character of the interpreted sand, of low uniform reflectivity. 20m N Figure 15 SSS record of sand Line DBA10AQM145; centred on 427 339E, 6 072 713N It is to be noted that some acoustic noise from the Sparker system can be observed at the distal ranges of the record due to their close proximity in shallow water. GEMS International Group of Companies 26
5.1.2 Stiff Clay and Gravel Figure 16 shows the acoustic character of the interpreted stiff clay (with occasional cobbles and boulders) towards the bottom of the Figure but also the medium reflectivity acoustic return representative of gravel to the centre and top. N 20m Figure 16 SSS record of stiff clay (occasional) and gravel Line DBA10KJM155501A; centred on 451 746E; 6 081 526N The gravel can be smooth in nature however as in the above example, we see varying returns indicative of megaripples. The strong variation in reflectivity of the troughs and peaks of these bedforms may indicate that finer material populates the peaks leaving the courser material behind in the troughs. Megaripples mainly reside in areas of gravel and in particular on the eastern margins of the observed gravel areas. GEMS International Group of Companies 27
Megaripples can be observed to populate large regions, the largest of which is in the east of Tranche A, covering an area over 50km². A large area of megaripples can be observed in the side scan sonar mosaic in Figure 17. N c. 1 km Figure 17 Megaripples observed in the SSS mosaic Mosaic with bottom left corner at 405 000E; 6 095 000N; 2km field of view The megaripple transport direction is predominantly NNW to SSE, although this is discussed more thoroughly in the Sediment Transport, section 5.2 of this report. Evidence for megaripples can also be found in the stiff clay and mixed sediment type classifications, but are less dominant in the record. These instances are typically more localised. GEMS International Group of Companies 28
5.1.3 Mixed Sediments The far left of Figure 18 indicates evidence of the occurrence of megaripples in a predominantly mixed area of seabed. 20m N Figure 18 SSS record of mixed sediment classification Line DBA10AQM1380; Image centred on 419 670E, 6 075 700N The complex nature and mixture of the interpreted seabed sediment types has led to areas being classified as mixed, with each sediment type being identified with roughly equal percentages. These areas portray the characteristics of the sand, gravel and stiff clay, none of which dominate the record. GEMS International Group of Companies 29
Another example of a largely mixed sediment classification is illustrated in Figure 19. N 20m Figure 19 SSS record of mixed sediment classification Line DBA10AQM1536; Image centred on 431 884E; 6 065 728N In the above instance there is equal evidence for gravel, sand and stiff clay in accumulations too small and/or complex to be digitised individually. This Figure is therefore representative of mixed sediment. GEMS International Group of Companies 30
5.1.4 Gravel Patches Gravel patches can be observed across the Tranche A survey area. Figure 20 and Figure 21 are representative of gravel patches amongst large regions of sand. Figure 20 SSS record of isolated gravel patches Line DBA10AQM1454; Image centred on 419 980E; 6 065 901N N N 20m c. 1 km Figure 21 SSS mosaic of gravel patches Mosaic with bottom left corner at 430 000E; 6 080 000N. Field of view: 3km GEMS International Group of Companies 31
The gravel patches across the site are typically infrequent, indistinct and with little or no evidence for bedforms. Areas where bedforms have not developed may indicate that these patches comprise a more compacted, harder sediment. 5.2 Sediment Transportation As noted in the previous section, bedforms are observed across the Tranche A survey area due to the transportation of sediment at the seabed. The majority of the bedforms identified comprise megaripples residing in the interpreted gravel areas however sandwaves are also evident in the side scan sonar and bathymetric datasets. The sandwaves are visible in the side scan sonar mosaic due to the apparent change in sediment type at the peaks of each sandwave resulting in a significantly higher acoustic reflectivity in comparison with the ambient seabed. The presence of sandwaves was confirmed by their apparent relief evidenced in the bathymetric data. Bedforms are classified using the standard definitions displayed in Table 8. Table 8 Sediment Transport Definitions Terminology Ripple Megaripple Sandwave Definition Undulations (<0.5m λ) produced by fluid movement (waves and currents) over sediments Undulations (0.5m to 25m λ) produced by fluid movement (waves and currents) over sediments Undulations (>25m λ) produced by fluid movement (waves and currents) over sediments Bedforms typically exhibit a low amplitude of less than 0.5m. Currents are strong enough to move and potentially erode the interpreted sand and/or gravel grade material. Although no major erosional features or scours have been observed, the underlying stiff clay has been exposed in bathymetric lows where there is no surficial sediment cover. GEMS International Group of Companies 32
Megaripple transport direction (observed in the side scan sonar record) is predominantly NNW to SSE, which is thought to be a function of the strong North to South tidal flow regime operating in this area. However, the transport direction does vary locally across the survey area, along with the wavelength of the megaripples, which varies over a 100m range and in particular at the boundary of the areas they occupy, as displayed in Figure 22. 20m B N A N N Figure 22 Megaripple variations Line DBA10AQM1480; Image centred on 423 528E; 6 065 624N The megaripple wavelength can be observed to change to the west from 1-1.2m at point A in Figure 22 to 1.5-2m at point B. The transport direction also noticeably rotates to an orientation closer to northsouth rather than the general NNW to SSE direction observed across the site as a whole. This is thought to be a function of the dynamic seabed currents acting in the area. The dynamic nature of the evolving bedforms has been observed due to adjacent or repeated survey lines being performed over a time period of up to 1 month apart. Figure 23 and Figure 24 show the migration of fine sediment over an 18 day period, from the lee slope of a sediment build up associated with megaripples. GEMS International Group of Companies 33
20m N Figure 23 SSS record of sediment migration, 03 December 2010 Line DBA10AQM145701A; Image centred on 426 998E; 6 072 001N 20m N Figure 24 SSS record of sediment migration, 21 December 2010; Line DBA10AQM145701B; Image Centred on 426 997E; 6 072 003N GEMS International Group of Companies 34
In Figure 24 fine sand, as identified by its very low reflectivity, is observed to have migrated locally to the north east, leaving behind the coarser gravel grade material characterised by an increased reflectivity. The predominant flow regime is therefore assumed to be towards the north east on this occasion. As shown in Figure 24, megaripples often populate large swaths or ribbons of gravel, and when compared with the bathymetric datasets many of these swaths form symmetric sandwaves, making definitive transport direction measurements, whether towards the north east or the southwest, of many of these sandwaves difficult. The megaripples are superimposed upon these sandwaves predominantly at an orientation approximately perpendicular to the sandwaves. These sandwaves are found to have a wavelength averaging 115m, overall wavelengths ranging from 50-150m and amplitudes of 0.1-2.1m (average 0.6m). The superimposed megaripples that were observed within the geophysical data sets were not identified in the bathymetric data, but the bathymetry did identify sandwaves that are not easily visible in the geophysical data. Clearly depicted sediment changes are also not discernible in the bathymetry. Figure 25 below shows the different areas of sandwaves throughout the site. The sandwaves are found to occur mostly in depths of 20-25m on the edge of valleys, as illustrated in Figure 26 and Figure 27. Figure 25 Areas of sandwaves identified in bathymetry (encircled in black) GEMS International Group of Companies 35
North South Figure 26 Sandwave direction, wavelength and amplitude Image centred on 439 564E; 6 075 727N, 20m WD Figure 27 Sandwave direction, wavelength and amplitude Image centred on 396 036E; 6 091 658N, 25m WD Further study needs to be carried out to understand the sedimentary processes acting across the wider Dogger Bank area, to identify and analyse any other trends and phenomena. Seasonal variation is also likely to add to this dynamic sedimentary process. GEMS International Group of Companies 36
5.3 Existing Infrastructure Three cables and one pipeline can be observed in the Tranche A survey area. These linear features can be observed in the side scan sonar record when at the seabed, by parabolic returns in the pinger sub bottom profiler dataset and most clearly in the magnetometer record. 696 magnetometer contacts have been identified across Tranche A. Of these, 176 delineate the position of the PL1570-Shearwater to Bacton SEAL 34" gas pipeline. Magnetic anomalies range from 13-828nT with an average of 121nT. The as found pipeline position appeared to lie approximately 80m east of the client provided database position, as shown in Figure 28 but this was attributed to an incorrect Geodesy ED50 and the revised database provided by the client matches the as found position. Superseded database position Figure 28 Magnetometer detected gas pipeline Centred on 403 465E, 56 101 137N The anomalies above and below the background magnetic field are denoted by the red and green peaks. The peaks or inflections were picked by the onboard geophysicist and represent the interpreted as found pipeline position. The as found positions have been depicted in the charts. GEMS International Group of Companies 37
The pipeline was clearly detected, when at the seabed, by side scan sonar and these occurrences have been digitised in the seabed features chart. Of the 20.424km of pipeline within the survey area, 9.685km can be found at the seabed. A side scan sonar image across the pipeline is displayed in Figure 29. c. 1 km Figure 29 SSS mosaic of the detected SEAL gas pipeline Image centred on 403 950E; 6 105 650N 152 magnetometer contacts delineate the position of the UK-Germany 6 cable. Magnetic anomalies range from 5-40nT with an average of 15nT. The maximum distance between adjacent picks is 650m with picks closely matching the provided database position, which is therefore believed to be reliable. 96 magnetometer contacts delineate the position of the Tata North Europe cable. Magnetic anomalies range from 4-37nT with an average of 11nT. The distance between adjacent picks is significant, reaching a maximum of 2.3km towards site centre however; picked values closely match the provided database positions, helping to validate the position between anomaly picks. There is just one possible magnetometer hit on the out of service UK-Denmark 4 BT cable Contact DBA_M2208 at 22nT although this could be a chance contact which falls close to the provided database position. This cable is likely to have deteriorated, carries little or no armour, or is buried too deep to be detected with the magnetometer. Wellhead (status) As-found E As-found N As-given E As-given N Difference (from As-given) Anomaly (nt) 43/05-1 (abandoned) 433039 6092416 433044 6092444 28m S (185 ) 743nT 43/10-1 (active?) 431077 6060622 431088 6060625 11m SW (242 ) 79nT 43/02-1 (abandoned) - - 393387 6087310 - Not detected 43/03-1 (abandoned) - - 405092 6093955 - Not detected 44/06-1 (abandoned) - - 441979 6067250 - Not detected GEMS International Group of Companies 38
5.4 Contacts 5.4.1 Magnetometer Point Contacts The remaining 271 magnetometer contacts which are were not related to infrastructure are spread across the entire area and 18 of these are associated with side scan sonar contacts of various classifications, including the 3 identified wrecks discussed in section 5.4.3. There are some localised concentrations of the remaining magnetometer contacts which may suggest that the results have been influenced by local geology, bathymetry and deployment geometry (including proximity to the survey vessel) as discussed in the later part of the processing methodology of GSL10109-OPS-003. 5.4.2 Side Scan Sonar Contacts There have been a total of 1914 side scan sonar contacts identified across Tranche A. Of this number, 856 sonar contacts were classified as boulders or boulder clusters, thought to be of glacial origin. Boulders and boulder clusters are present throughout the area, although within the areas of significant megaripples their presence is lessened. Although it was not possible to target all boulders across the site, boulders dominant in the record were picked as Isolated Boulders, as illustrated in Figure 30, or Boulder Clusters as shown in Figure 31. c. 10 m Figure 30 Isolated Boulder (3.1x1.5x0.7m). Line DBA10AQM1073, centred on 398 337E, 6 097 845N GEMS International Group of Companies 39
c. 10 m v Figure 31 Boulder Cluster (image extent 50 x 90m). Line DBA10AQM1021, centred on 400 443E, 6 106 901N. GEMS International Group of Companies 40
Other non-geological contacts in the area include trawl scars, which were observed towards site centre and the Southeast (Figure 32 and Figure 33). These appear different to the sand bars and megaripples by the character of the light and shadow return. The trawl scars do not appear to be steep sided suggesting that they are not recent and/or have been recently reworked. Other than trawl scars, there was little evidence of fishing activity within the Tranche A; there were no disruptions to the survey due to fishing activity throughout the course of operations. 20m Figure 32 Trawling activity in evident in gravel sediment Line DBA10AQM104201A; Image centred on 399 291E; 6 102 900N Figure 32 has been interpreted to be representative of trawling activity in this region due to the engrained markings in megarippled gravel. GEMS International Group of Companies 41
Trawl scars are observed mainly in areas where there is an increased gravel content as displayed in Figure 33. c. 50 m Figure 33 Trawl scar termination at sediment boundary. Line DBA10AQM104201A; Image centred on 399 412E; 6 102 840N GEMS International Group of Companies 42
5.4.3 Observed Wrecks 3 wrecks were provided in the SeaZone database; Unidentified (434 979E; 6 096 190N), U66 (435 936E; 6 095 175N) and William and John (436 033E, 6 095 249N). No wrecks were discovered in the immediate vicinity of these provided in the SeaZone database. 3 additional wrecks were found at the seabed in the side scan sonar record. These wrecks were also identified in the bathymetric data and magnetometer data, and hence have associated magnetometer contact ID s. Primary positioning is taken from the bathymetric data. Table 9 outlines the wreck attributes, including their least depths. Wreck ID (SSS) Wreck ID (Mag) Easting Northing Table 9 Wrecks As found Least Depth (m LAT) Length (m) Width (m) Height (m) Identified from Admiralty / Seazone Data 1000 6221 416 938 6 099 717 29.01 115.1 21.3 2.1 No 1001 6130; 6131 415 802 6 074 542 19.74 54.9 19.2 3.8 No 1002 6043; 6047 445 479 6 072 251 19.57 70.7 8.9 3.0 No The following figures show bathymetric and SSS data examples of wrecks 1000-1002. GEMS International Group of Companies 43
Figure 34 Wreck (ID 1000) identified in the bathymetric data (top) and SSS record (bottom) Images centred on 416 938E; 6 099 717N (6x Exaggeration for bathymetry). SSS record from line DBA10KJM118501A. Wreck ID 1000 is 19.5km from the database position (bearing 283 ) of U66 however the character of the wreck suggests it may be U66. The vessel specification yields a vessel length of 70m, less than the SSS measured length, however vessel break up, debris, seabed scaring and sedimentation could account for GEMS International Group of Companies 44
this. There appear to be features within the target which could represent railings, which are set well in from the external limits of the vessel, as commonly observed on a U66 due to side flotation tanks. Figure 35 Wreck (ID 1001) identified in the bathymetric data (top) and SSS record (bottom) Images centred on 415 802E; 6 074 542N (6x Exaggeration for bathymetry). SSS record from line DBA10KJM136201A. GEMS International Group of Companies 45
Figure 36 Wreck (ID 1002) identified in the bathymetric data (top) and SSS record (bottom) Images centred on 445 479E; 6 072 251N (6x Exaggeration for bathymetry). SSS record from line DBA10KJM158101C. GEMS International Group of Companies 46
6. SUB-BOTTOM GEOLOGY A geological schematic of the GEMS delineated sub-seabed units is as follows; Figure 37 Geological schematic of Interpreted Sub-seabed Geology in Tranche A. This model was used during acquisition and processing, with final interpretation submitted to Forewind on 23 rd September 2011. It is understood that with the input of the British Geological Society (BGS) that this model has since been reviewed. BGS acknowledge that deviations occur from the published map sheets which were used to formulate this initial model. BGS confirm that the 1:250,000 maps cannot be used exclusively for high resolution surveys, Dave Long (18/11/2011). 6 horizons (A through G) were identified across the Tranche A site by GEMS, which signify distinct variation in seismic character. These horizons bound Units a through g, where Horizon A marks the base of Unit a. GEMS International Group of Companies 47
The following table summarises the main geological units identified across the Tranche A site. Table 10 Observed Depths of Geological Units Horizon ID Interpreted Geological Formation Unit ID Horizon Depth (m) A Holocene Channel Infill a <1-10 Holocene Sediments b B <1-15 Dogger Bank Formation / Twente Formation c (overlain by b / ci ( ci assumed to be the Dogger Bank Volans Member)) C 15-60 Cleaver Bank Formation / Egmond Ground Formation d D 40-100 Swarte Bank Formation e E 100-200 Yarmouth Roads Formation f (overlain by d / e ) F 15-200 Aurora Formation g (overlain by e / f ) G 41->350 The GEMS interpretation has focussed on these main lithographic units critical to defining the geotechnical attributes of the sub-bottom geology. These units are discussed in the following sub sections. The profiles which follow are displayed in time below seabed, where 10ms can be assumed to represent 8m for near seabed depth approximations. Shot points are 5m apart, therefore 100 shots represent 500m. GEMS International Group of Companies 48
6.1 Unit a The base of Unit a (Horizon A), is a strong reflector close to the seabed and could be interpreted as the Botney Cut Formation. Unit a reaches a maximum depth of 10m BSB. Unit a is more evident to the west of the region and its occurrence reducing the intensity of the underlying Horizon B (Figure 38). West East Unit a Seabed Unit b 10ms (c. 8m) Unit c Figure 38 Shallow sub-bottom profile showing Unit a overlying Unit b. Line DBA10AQM1087, centred on 397 864E, 6 095 433N 6.2 Unit b The base of Unit b (Horizon B), assumed to be the top of the Dogger Bank Formation, is defined by a moderate to strong horizon, where it is nears the seafloor (less than 1m), and comprises Holocene sediments. The base of the unit reaches a maximum depth of 33m (Zone A). The internal characteristics of Unit b are variable with depth and generalised as acoustically transparent. In deeper sections there are sub-parallel reflectors indicative of channel infill (Zone A east). Horizon B can be observed as the erosional base of the sandwaves observed on the seabed and can be seen to terminate at the seabed where sandwaves are not present (Figure 39). West East Seabed Unit b 10ms (c. 8m) Unit c Figure 39 Shallow sub-bottom profile showing the sand waves with exposed Horizon B. Line DBA10AQM1121, centred on 412 125E, 6 104 001N. Figure 40 shows the isopach of Horizon B. It is understood from recent client feedback, received from Forewind on 18/01/2012 that this horizon may form the base of the Bligh Bank Formation. The depth of the horizon in the centre of Zone A is beyond the penetration of the pinger and can be seen as a very shallow horizon in the Sparker data (Figure 46). Unit b also shows thickening associated with channel infill. GEMS International Group of Companies 49
Horizon B not present Horizon B exposed at surface Horizon B main lines not interpretable Figure 40 Base of Unit b (depth in metres bsb) GEMS International Group of Companies 50
6.3 Unit c The base of Unit c (Horizon C), assumed to be the Dogger Bank Formation, is defined by a characteristically strong but discontinuous reflector. The base of the unit is generally found between 25m and 40m BSB but does reach depths of 60m in some parts of the site, and may be present at 16m below the surface, or eroded away completely where localised faulting is interpreted to have occurred (Figure 41). Southwest Northeast 50ms (c. 40m) Figure 41 Thinning of Unit c in localised area of faulting; Line DBA10AQM111401A, centred on 398 365E, 6 092 235N. The depth below seabed of Horizon C is illustrated in Figure 43. Shallow channels are occasionally observed cutting through the top of the unit across the site, the base of which has been defined as Horizon Ci (internal). This is thought to be evidence of the Volans Member of the Dogger Bank Formation. Unit c is observed across most of the Tranche A site, however it appears to be absent in the extreme west of the site. GEMS International Group of Companies 51
The internal characteristics of Unit c are found to be highly variable across the site although there is a general tendency towards acoustically transparent or chaotic characteristics (Figure 42). In areas toward the north and east of the site however, sub-parallel reflectors are common. Shallow internal channels are found across the site within the Dogger Bank Formation. Infill of many of these channels is acoustically transparent although sub-parallel reflectors are observed within some of the channels. In the southern and western areas of the site, strong internal reflectors are observed close to the base of the formation, thought to be evidence of gravel beds. West East Seabed Unit b 10ms (c. 8m) Acoustically Transparent Unit c Chaotic Internal Structure Figure 42 Acoustically transparent and chaotic internal structure of Unit c Line DBA10AQM123901A, centred on 414 677E, 6 090 282N. Horizon C is typically sub-horizontal, though this characteristic is not true across the whole site. Horizon C deepens towards the centre of the site, and a shallowing is observed in the east and west of the site (Figure 43) to an interpreted minimum of 16m. In these areas Horizon C is not interpretable. The region appears to be characterised by a series of interconnected channels of deltaic structure between 40m and 60m below the seabed. At the western limit of Horizon C near surface faulting can also be observed throughout Unit c which makes interpretation too difficult without geotechnical input. It is to be noted that Horizon C was believed to form the base of the Dogger Bank Formation, however feedback received from the British Geological Society via Forewind on 18/01/2012 explains the complexity of mapping Horizon C. It is apparent that when not clearly evident in the record the GEMS interpretation has mapped the underlying top of the Egmond Ground Formation. In these instances the Cleaver Bank Formation can be observed overlying the Egmond Ground Formation, and it is in fact the base of the Cleaver Bank Formation which has been mapped in these instances. The difficulty arises from the GEMS interpretation of Unit d which represents both the Cleaver Bank and Egmond Ground Formations. Further feedback received from Forewind indicates that the lack of sub seabed boulders identified by the survey and the results from the follow up geotechnical works has led to a change in the interpreted geological setting of Unit c, from having a mainly glacial marine depositional environment to that of a glacial lacustrine, pro-glacial water laid deposit. For instances where Unit c is observed at the seabed, the seabed features charts have been changed for this revision to reflect the change in geological understanding, with all reference to boulder clay changing to stiff clay with associated cobbles and boulders. GEMS International Group of Companies 52
Horizon C not interpretable Horizon C not interpretable Horizon C not interpretable Figure 43 Base of Unit c (depth in metres bsb) GEMS International Group of Companies 53
6.4 Unit d Unit c and Unit e / Unit f are separated by the relatively thin Unit d, which is characterised by its acoustically chaotic nature. The basal reflector is relatively weak and uneven across the site, and consequently the horizon has not been mapped fully. The basal reflector was also observed to have significant changes in amplitude across the site, with the most significant increases coincident with truncation of the underlying channel infill. It is believed that the unit is a combination of the Egmond Ground Formation and the Cleaver Bank Formation. Although Unit d is generally chaotic in character, in some places sub-parallel reflectors can be observed. Units d and c are acoustically and geologically very similar, making it difficult to delineate the boundary between the two in some areas of the site, as evident in Figure 46. The basal reflector of the unit (Horizon D) was observed to change depth across Tranche A fairly rapidly; hence the thickness of the unit is variable across the site. 6.5 Unit e Horizon E marks the base of Unit e, which is assumed to be the Swarte Bank Formation, a unit of scaphiform infill channels, cut into the underlying Unit f. This unit is present as a single, complex channel system running East-West across the site. The horizon generally lies between 50m and 210m BSB. The unit generally comprises two or more channelling phases, of which the earliest, deepest phase has been represented as Horizon E. The infill between the two main phases of channelling has differing acoustic characteristics. The primary phase of channelling infill tends to be more acoustically transparent, while the later phases appear to consist of sub-parallel internal reflectors. Additionally, the primary phase is typically characterised by a v-shaped asymmetric form, compared to the more rounded, symmetrical profile found in the later phase. The channel system features several major tributaries joining into a single central flow direction towards the west of the site. In the east of the site adjacent to the main-channel system a shallow, broad channel system has been observed with distinct sub-parallel reflectors (Figure 44). It is not clear as to whether this is linked with the larger deeper channel complex. GEMS International Group of Companies 54
Figure 44 Spatial illustration of depth BSB (m) to Horizon E, the base of Unit e 6.6 Unit f Unit f, which is thought to represent the Yarmouth Roads Formation, has been identified in all areas of the site, although the upper- and lower-most limits of the unit are both observed to be discontinuous uninterpretable on occasion. Between Horizon D/E and Horizon F, the unit was found to have a basal surface between 100m and 200m below seabed. The unit appears to thicken towards the east of the site, from around 50m BSB in the west, to approximately 130m BSB in the east. Unit f was observed to be chaotic through most of the site however there are some areas of sub-parallel reflections. There appears to one prominent internal reflector within the unit, with numerous other discontinuous reflectors. The formation is incised by the large channel system defined as Unit e (previous section). 6.7 Unit g Unit g, which is assumed to represent the Aurora Formation, is the earliest identified quaternary unit in Tranche A. The unit is overlain by Unit f and overlies a geological unconformity. The unit is typically observed at a depth of 100m to 200m BSB, deepening in an easterly direction. Horizon G is a geological unconformity, which is defined as the base of the unit. This horizon is seen to shallow significantly to the northwest of the site. Unit g is characterised internally by widespread sub-parallel reflectors, although in some places the unit can be chaotic. The Horizon G is relatively weak and is often not present. The horizon is frequently incised by initial phases of channelling associated with Unit e (Figure 45). Towards the East of the site the complex faulting which has occurred above has disturbed Unit g and this area has been highlighted in Figure 45. GEMS International Group of Companies 55
Figure 45 Spatial illustration of depth BSB (m) to Horizon F, the base of Unit f. The red polygon depicts the area disturbed by faulting GEMS International Group of Companies 56
Figure 46 summarises the units identified across the Tranche A site. The characteristics shown are representative to those experienced across the site. 50ms (c. 40m) Figure 46 Representative sparker interpreted profile Line DBA10AQM147501A, centred on 439 978E, 6 081 560N. GEMS International Group of Companies 57
7. GEOPHYSICAL AND HYDROGRAPHIC INTERPRETATION 7.1 Overview The Tranche A survey area has been split into zones of similarity using the seabed features interpretation and the bathymetry. The seabed sediment type has been interpreted from the side scan sonar mosaic record with observations of the acoustic intensity and characteristics. Although a desktop study was carried out, no ground-truthing was performed as part of the survey. The following four seabed features zones have been identified; Zone A - Benign seabed of predominantly SAND with gravel patches and abundant megaripples and sandwaves. Zone B - Predominantly SAND with some gravel, stiff clay (with associated cobbles and surface boulders) and mixed sediment with some sandwaves. Zone C - Predominantly SAND with some gravel and mixed sediment with areas of sandwaves. Zone D Chaotic outcrops of stiff clay (with associated cobbles and surface boulders), gravel and mixed sediment. Figure 47 shows the delineation of these areas within the Tranche A survey bounds. Figure 47 Overall Spatial Representation of Sediment Types in Tranche A A full description of these zones has been compiled in the following sections. GEMS International Group of Companies 58
7.2 Slopes Slopes across the site have been analysed with reference to Table 11 and are presented in Figure 48 Table 11 Slope Categories % Slope Range Slope Range Descriptor 0% to 5% 0 to 2.9 slightly 6% to 10% 3 to 5.9 gently 11% to 15% 6 to 8.9 moderately 16% to 20% 9 to 11.9 steeply 20% 12 very steeply or extremely There are no slopes in Tranche A that can be defined as greater than gently sloping. The majority of the site can be classified as slightly sloping, with slopes ranging from 0 to 2%. However, in areas of sandwaves and in the valleys, localised gentle slopes have been identified and there are potentially small isolated slopes associated with sediment transportation, in particular the lee slopes of sandwaves in all Zones. Slope values were calculated using DMagic on a 10m grid. The slope surface is computed so that it represents the maximum slope from each cell to any of its neighbouring cells. Slope values are displayed in decimal degrees. GEMS International Group of Companies 59
Figure 48 below is a slope shaded image that has been draped over the bathymetry DTM. It illustrates the variation in slope throughout the site, highlighting the areas in Zones B, C and D as well as the localised sandwaves and valleys within Zone A as being irregular and rough in texture. Zone C Zone B Zone D Zone A Zone C B-B Zone D Figure 48 Site slope values (degrees from horizontal) which highlights the valley locations There are no significant depressions throughout the site however a number of valleys can be observed striking predominantly Zones C and D with depths of approximately 3m and residing in water depths of 23-26m. The observed valleys cover approximately 50% of the site with the only significant area of clear relief being in Zone A to the East. Figure 49 shows the profile character of the valleys labelled in Figure 48, where a rough seabed texture and irregular bathymetry is evident. These valleys are found in the geophysical datasets to be coincident with outcrops of underlying stiff clay material. GEMS International Group of Companies 60
Figure 49 Valley profile B-B (as indicated in Figure 48) Centred on 419 542E, 6 065 828N. GEMS International Group of Companies 61
7.3 Near Surface Geological Discussion The sub bottom geology clearly interacts with the seabed and affects the seabed features observed. Figure 50 and Figure 51 illustrates how the surface of Unit c, as identified in the sub-bottom data, and the water depth as analysed from the bathymetric data respectively, show significant trends in relation to the zones introduced in Section 7.1. Here Tranche A is split into similarity Zones (A through D). Zone D, defined as being characterised by chaotic outcrops of stiff clay, gravel and mixed sediment, coincides with a large area where Unit c (which comprises of stiff clay sediment) beneath the surficial sediments appears to sub- or outcrop at the seabed. Overall these occurrences correspond with greater water depths than the surrounding areas and the valley bottoms, as described in the Bathymetry Section 4 of this report. Horizon B main lines not interpretable Figure 50 Shaded colour depth BSB to Horizon B, interpreted to mark the surface of Unit c The relatively benign seabed of Zone A coincides with deeper occurrences of Unit c and a largely flat, featureless seabed observed in the bathymetry (Figure 51). This contrasts with sub- or outcrop of Unit c across Zone D where the nature of the seabed bathymetry is undulating. GEMS International Group of Companies 62
Figure 51 Colour banded illustration of bathymetry across Tranche A A breakdown of each of the zones and their individual characteristics follows; 7.3.1 Zone A Zone A can be found in the East of Tranche A (Figure 52) and characterises 38% of the survey area at approximately 740km². The seabed is relatively benign and of low acoustic reflectivity, interpreted to indicate a sand seabed, with less than 1% of the area representing high reflectivity sediments. These acoustically high reflectivity sediments are characterised by a considerable presence of high relief boulders, and are thought to represent small outcrops of the underlying Unit c as described previously. Unit c is interpreted to represent the widespread Dogger Bank Formation however this does not dominate the seabed features in this zone. GEMS International Group of Companies 63
Figure 52 Zone A as defined from Seabed Features Interpretation Towards the centre of Zone A, covering approximately 65km² is a concentration of medium reflectivity interpreted to be gravel patches amongst the SAND. These gravels are likely to comprise gravel grade shell fragments. Within this concentration, megaripples can clearly be observed in the sonar record as predominantly sub-metre scale variations / linear concentrations of gravel. The crest orientation indicates an overall NNW to SSE flow regime. Central, northwestern and southeastern areas of Zone A exhibit significant localised depressions in the interpreted Horizon B (uppermost bound of Unit c ). In the southernmost part of the zone, there appears to be linear valleys with amplitudes of up to 10m (Figure 50). There are several predominantly North-South orientated seabed valleys evident in both sub-bottom and bathymetric datasets, where coarse sediment (GRAVEL) is identified at the seabed in the base of the valleys. An internal channel is observed within the interpreted Unit c, the infill of which has been defined as Unit ci and is thought to represent the Volans Member of the Dogger Bank Formation as illustrated in the following pinger profiles. Infilled channels, identified as Botney Cut Formation, are also observed near the surface within Zone A. Southwest Northeast ~ 500m 10ms (c. 8m) Seabed Seabed Valley Unit B Unit C Figure 53 Pinger SBP profile of Unit b overlying Unit c with evident seabed valleys GEMS International Group of Companies 64
Southwest Line DBA10KJM136701A, centred on 415 158E, 6 073 284N. Northeast ~ 500m Unit B Seabed 20ms (c. 16m) Unit Ci Unit C Unit C Figure 54 Pinger SBP profile of sub-cropping/outcropping Unit c with incised Unit ci Line DBA10KJM116701A, Centred on 412 204E, 6 097 798N. Few sporadic sonar contacts are observed in this zone with many of these attributed to minor geological depressions. Several magnetic anomalies are observed in this zone with the majority associated with the East-West running UK-Germany 6 cable and the remainder likely to be associated with minor debris or sub surface geology. The bathymetry in the rest of the area is predominately flat ranging 20m-30m with some shallow valleys to the Southeast approximately 2m deep. Figure 55 Bathymetric image of observed bedforms. Centred on 439 559E, 6 075 578N with vertical exaggeration of six times. GEMS International Group of Companies 65
7.3.2 Zone B Zone B can be found in the North of Tranche A and characterises 20% of the survey area at approximately 380km² (Figure 56). The seabed is a relatively complex mixture of varying acoustic return. High relief boulders can be observed at the seabed in areas of localised high acoustic reflectivity, interpreted to be outcrops of the defined Unit c. These occasional outcrops of stiff clay (with cobbles and boulders of varying frequency) can be observed in thin (<500m) ribbons orientated NNW to SSE, and make up approximately 20% of the Zone B area. These outcrops are also evident in the sub-bottom profiler record (Figure 50). The outcrops identified in the side scan sonar record may be smaller in area than those identified in the sub-bottom profiler record due to a veneer of finer sediment (Unit a / b ) overlying Unit c. The majority of these outcrops are less than 1km². The sediment type adjacent to these stiff clay ribbons is often interpreted as sandy gravel or gravel of medium reflectivity. This gravel often provides a gradational change from the high relief stiff clay and surrounding benign sand seabed of low acoustic reflectivity, which remains the predominant seabed type of Zone B covering approximately 300km². Surficial sediments have an average thickness throughout Zone B of approximately 2m. Figure 56 Zone B as defined from the Seabed Features Interpretation Megaripples can be observed in the interpreted gravel, but they are not as dominant as those observed in Zone A and often cover isolated areas of <1km². The megaripples are of a wavelength of predominantly 1-2.5m and the crest orientation indicates a NNW to SSE flow regime. The bathymetry in this area shows valleys in the southwest of the zone that are approximately 3m deep which has been interpreted as outcrops of the defined Unit c, where stiff clay is exposed at the seabed in the base of the valleys. An example of the valley topography with the gravel boundary overlain is illustrated in the following figure; GEMS International Group of Companies 66
N Figure 57 Shaded colour bathymetry with delineated gravel boundary located within a valley Centred on 412 940E, 6 096 569N with vertical exaggeration of thirty times. Sandwaves are present only in 20% of the zone, mainly in the shallow areas, and can be observed in the following sub-bottom profile where there is also evidence of Unit c exposure within a topographic low. Southwest Northeast ~ 500m Unit B Seabed 10ms (c. 8m) Unit C Figure 58 Sub-bottom profile showing sandwaves overlaying Unit c and seabed valleys coincident with outcrops of Unit c Line DBA10KJM120502A, centred on 424 125E, 6 103 666N. GEMS International Group of Companies 67
7.3.3 Zone C Zone C can be found along the Southwest boundary of Tranche A and characterises 18% of the survey area at approximately 340km² (Figure 59). The seabed within this zone has very similar characteristics to Zone B, which is also adjacent to Zone D. However there is little evidence for high relief boulders and seabed characteristics which are clearly indicative of stiff clay. Where boulders do occur they reside in areas of mixed sediments. The interpreted mixed and gravel areas observed are often thin (<500m) ribbons orientated NNW to SSE, stretching 1-3km, as in Zone B. The majority of these outcrops are less than 1km² and are surrounded by low relief benign sand seabed of low acoustic reflectivity, which remains the predominant seabed type, covering approximately 280km² of Zone C. The underlying Unit c is generally identified at between 0.5m and 3m BSB, deepening towards the centre of Zone C. Zone C Figure 59 Zone C as defined from Seabed Features Interpretation Megaripples are again observed in the medium relief interpreted gravel sediments, with the same dominant NNW to SSE flow regime. The megaripples observed here are of variable wavelength. GEMS International Group of Companies 68
The bathymetry in Zone C is similar to that of Zone B; valleys are observed in the southeast of the area, that are approximately 4m deep, where gravel can be observed to reside. Water depths range from 20m-30m. N Figure 60 Shaded colour bathymetry with delineated gravel boundary located within valley Centred on 422 365E, 6 062 996N with vertical exaggeration of thirty times. Sandwaves are only present in 10% of the Zone. The sandwaves to the north east of the zone are along the western flank of a ridge in approximately 20m water depth. There is little exposure of Unit c within Zone C, as evident by the lack of high reflectivity sediment in the side scan sonar record and a prominent layer of surficial sediments exhibited in the sub-bottom profiler record. Sediments overlying the interpreted Unit c appear to deepen significantly as shown in the pinger sub-bottom profile of Figure 61. Southwest Northeast ~ 500m Seabed Unit b 10ms (c. 8m) Unit c Figure 61 Shallow SBP profile showing surface geology within Zone C as found to the north Line DBA10AQM111401A, centred on 396 843E, 6 090 811N. Further south in Zone C, the interpreted Unit c typically is observed at less than 7m BSB, occasionally outcropping (Figure 62 and Figure 63). The extent of exposure of the underlying unit through the surficial low reflectivity sediments is approximately 10% in the southernmost area of Zone C. Other features of note observed within the sub-bottom record include North-South orientated valleys where underlying sediment is exposed. Southwest Northeast ~ 500m GEMS International Group of Companies 69
Seabed Unit b 10ms (c. 8m) Unit c Figure 62 Shallow SBP profile showing surface geology within Zone C as found in the west Line DBA10KJM123601A, centred on 409 358E, 6 085 771N. Southwest Northeast ~ 500m Seabed 10ms (c. 8m) Unit c Unit b Figure 63 Shallow SBP profile showing surface geology within Zone C as found in the southwest Line DBA10KJM153501A, centred on 432 008E, 6 065 998N GEMS International Group of Companies 70
7.3.4 Zone D Zone D can be found in a NW to SE orientated band which stretches across the entire length of the Tranche A area, comprising 24% of the survey area, equating to approximately 430km² (Figure 64, Figure 65 and Figure 66). The seabed here is distinctly different than the adjacent zones; sand is no longer the predominant sediment type observed, while approximately 75% of the seabed within the zone comprises outcropping harder material of Unit c. Where there is a presence of surficial sand overlying Unit c, its thickness is typically between 3m and 7m, however this thins towards the northernmost section of Zone D. The acoustic intensity and character across this zone is highly variable, where stiff clay, gravel and mixed seabed types dominate the seabed equally, adjacent to one another in ribbons which are often orientated NNW to SSE. Cyclical variations in these thin (<500m) ribbons can be observed to the South of this zone where sediment interpretation changes frequently, from gravel to stiff clay and back, but also from stiff clay to gravel to Mixed and back. This cyclical behaviour is clearest in Figure 64. Figure 64 Zone D as defined from Seabed Features Interpretation (South) Megaripples can be observed in all of these major sediment types, again orientated with a flow regime of NNW to SSE and of variable wavelength. There are few sporadic sonar contacts observed to the south of this zone but several towards the north. The majority of these can be attributed to large isolated boulders predominantly in the mixed classification. Variations in sediment classification in the north and centre of Zone D are no longer cyclical as in the south of the zone, but appear more random and not in the ribbon forms observed elsewhere. Mixed sediment classification dominates the record in the centre of the area where the acoustic character is most chaotic. GEMS International Group of Companies 71
Figure 65 Zone D as defined from Seabed Features Interpretation (West) The largest interpreted outcrop of stiff clay is observed north of the centre of Zone D; covering an area of approximately 6.5km², orientated North-South (Figure 65). This is consistent with the exposure of Unit c observed in the pinger sub-bottom profiler record (Figure 50; Figure 68). At the northernmost extent of Zone D, sediment classifications show fewer noticeable trends, although the NNW to SSE orientation of a given sediment type can still be observed. The complicated character of the seabed here is attributed to the chaotic nature of Unit c which outcrops frequently in this area and is also understood to be reworked by seabed currents. GEMS International Group of Companies 72
Figure 66 Zone D as defined from Seabed Features Interpretation (North) Bathymetry in Zone D is at its deepest ranging from 35m-40m and shows large areas of Unit c outcropping at the seabed. There are no sandwaves identified in this zone. N Figure 67 Shaded colour bathymetry with the delineated Unit c exposure boundary coincident with a topographic valley Centred on 437 824E, 6 062 169N with vertical exaggeration times thirty. GEMS International Group of Companies 73
Southwest Northeast ~ 500m 10ms (c. 8m) Seabed Unit b Unit c Figure 68 Shallow sub-bottom profile showing the sub- outcrop of Unit c Line DBA10KJM132601A, centred on 416 024E, 6 079 676N. Southwest Northeast ~ 500m 10ms (c. 8m) Seabed Unit b Unit c Figure 69 Shallow SBP profile showing sub-outcrop of Unit c and correlation with valley topography Line DBA10KJM153501A, centred on 433 477E, 6 067 352N 7.4 Sediment Sampling and In-Situ Testing No sediment sampling was performed during survey operations, thus the seabed sediment type has been interpreted purely from the SSS mosaic record with observations of the acoustic intensity and characteristics. A desktop study of the region and the British Geological Society charts were used as an aid to interpretations. Client feedback received on 18/02/2012 indicates that the seabed features interpretation and the camera work correlate well. GEMS International Group of Companies 74
8. POTENTIAL HAZARDS 8.1 Shallow Gas There are numerous small areas of high amplitude anomalies, interpreted as potential pockets of shallow gas, throughout the site. The majority of these high amplitude anomalies are isolated although a broad scale area is observed to the Southeast of the site (Figure 71) and the isolated occurrences do appear to form a North-South linear trend across site centre. These areas have been identified due to the presence of high amplitude reflections immediately overlying an instance of acoustic blanking or where coherent signal is reduced and significant reverberation is evident. The broad scale region is considered to be widespread diffuse gas and is shown in Figure 70. Southwest Northeast ~ 500m Seabed 100ms Reverberation / Acoustic Blanking Figure 70 Profile showing apparent reverberation and acoustic blanking associated with gas presence Line DBA10KJM159501A, centred on 454 526E, 6 078 656N. GEMS International Group of Companies 75
Figure 71 Spatial illustration of the high amplitude anomalies observed across the site GEMS International Group of Companies 76
8.2 Potential Peats Peat and shallow gas exhibit similar qualities in the sub-bottom profile data, thus the appearances of shallow gas in the areas described in Section 8.1 may indicate a presence of shallow buried peat. Another example of a high amplitude anomaly is presented in Figure 72 which may be explained by a possible near seabed peat layer (as indicated). Southwest Northeast High Amplitude Anomaly Possible Peat Layer Multiples Acoustic Blanking 100ms Figure 72 High amplitude anomalies present Line DBA10KJM153501A, centred on 437 296E, 6 070 881N. GEMS International Group of Companies 77
8.3 Faults Significant evidence of faulting is interpreted within the uppermost 100m of the sub-bottom record at the Northwest of the site (as illustrated in section 6.4 unit f ). The faulting has been interpreted due to the complexity of the substrate within the top 100m, which is locally characterised by significant vertical offsets and folding as shown in the previous Figure 41. Further study needs to be carried out to investigate the complex fault structures and their timings, observed here. There have been no instances of lithified sediments identified at the seabed within the survey area. 8.4 Small Bodies of Sand Small bodies of sand can be observed amongst areas of differing classification (e.g. mixed or boulder clay ). These localise metre scale bodies could provide differing conditions to the generalised sediment type depicted in the charts. Isolated sands / sediment patches may be a function of the erosion/attrition of cobbles and boulders exposed at the seabed. GEMS International Group of Companies 78
8.5 Channels / Soft Channel Infill The area has been heavily channelized in numerous phases throughout the site. Shallow channels within the uppermost layer of surficial sediments are evident and the majority are likely to comprise of similar sediments to the surrounding material. Compaction rates of the channel infill may differ, however the similarity of the sediment type and its generally course calibre would suggest that these instances do not pose a threat to operations. Feedback received from Forewind on 18/01/2012 indicates that as the understanding of the geology has developed, post-acquisition, occurrences of the Botney Cut Formation have been identified. These are observed as soft clay infilled channels which often reside within pre-existing sand filled channels. These instances would be significant for engineering purposes. Channels are also observed towards the top of Unit c. Infill of these channel features has been described as Unit ci (internal) and is interpreted to represent the Volans Member of the Dogger Bank Formation. The most significant channels are those interpreted as Unit e, the interpreted Swarte Bank Formation. This unit is incised into the underlying Unit f over widespread linear areas across Tranche A (as section 6.4 Unit e ). The steep sided nature of these channel forms will result in distinct lateral variations in installation and geotechnical properties. 8.6 Cobbles / Boulders Cobbles and boulders are observed when stiff clay is observed at the seabed. The largest accumulation of stiff clay is within Zone D, where sediment cover is lacking and the underlying substrate is exposed. Zone D, as described in Section 6, which is present in a NW-SE orientation across the entire western flank of the survey area, is characterised by numerous outcrops of this substrate, interpreted as stiff clay with cobbles and boulders. This area, as well as large areas at the southern and northern ends of the site (mainly within Zone C), also feature widespread thin sediment cover, where the clay is present just beneath the seabed. Boulders are not evident in the sub bottom record beyond the seabed. Feedback received from Forewind on 18/01/2012 indicates that this has led to a change in the geological setting of Unit c, the interpreted Dogger Bank Formation, from having a mainly glacio-marine depositional environment to that of a glaciolacustrine, pro-glacial water laid deposit. It is however still possible that sub seabed boulders exist within Unit c undetected in the sub-bottom record, and may therefore pose a risk to installation. No such instances have been encountered when completing the recent geotechnical works. 8.7 Surface Obstructions Three cables and one pipeline can be observed in the Tranche A survey area. These linear features can be observed most prominently in the magnetometer record although also observed in the pinger and side scan sonar record when at the seabed. Section 5.3 Existing infrastructure and section 5.4 Contacts goes into more detail about existing infrastructure seabed hazards (including well heads and wrecks). Of note fishing activity may also pose a threat to future operations particular in shallow areas where long line pot fishing may be favourable. Post survey fishing debris must also be considered as the Dogger Bank forms a popular fishing ground with shallow waters forming nurseries for fish populations. Sediment transportation (Section 5.2) may also provide surface obstructions and these forms are likely to have relocated / changed in form, post survey. Erosion of superficial sediments may also reveal further obstructions beneath. GEMS International Group of Companies 79
GEMS International Group of Companies Geotechnical, Geophysical and Metocean Expertise around the World APPENDIX A SEABED FEATURES TARGET DATABASE GEMS Survey Limited St. James House, St. James Place, Gains Lane Devizes, Wiltshire, SN10 1FB United Kingdom Registration Number: 3083699 T: +44 1380 735 200 F: +44 1380 735 201 devizes@gems-group.com www.gems-group.com
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 ID Average E Average N Length (m) Width (m) Height Azimuth (Depth) (deg.) Class Type Comment Associations DBA_S1000 416938 6099717 115.1 21.3 2.1 Point Contact Wreck DBA_M6221 (60m), W40002 (58m), M10069 (100m) DBA_S1001 415802 6074542 54.9 19.2 3.8 Point Contact Wreck DBA_M6130 (45m), DBA_M6131 (84m) DBA_S1002 445479 6072251 70.7 8.9 3.0 Point Contact Wreck DBA_M6043 (20m), DBA_M6047 (64m), W40001 (27m) DBA_S1003 451273 6082242 281.7 123.0 nmd 99.2 Linear Contact Scar (Trawl or Anchor) DBA_S1004 457678 6081215 7.4 1.5 0.3 Point Contact Unit Debris DBA_S1005 457641 6081060 4.5 1.4 0.3 Point Contact Unit Debris DBA_S1006 454917 6078551 1.3 1.0 0.3 Point Contact Unit Debris DBA_S1007 453742 6078841 1.9 1.0 0.4 Point Contact Unit Debris DBA_S1009 451396 6075911 148.2 10.4 nmd 84.1 Linear Contact Scar (Trawl or Anchor) DBA_S1010 450621 6075433 141.6 5.7 nmd 87.0 Linear Contact Scar (Trawl or Anchor) DBA_M6022 (57m) DBA_S1011 446858 6071423 3.1 2.6 0.2 Point Contact Unit Debris DBA_S1012 444538 6069768 6.4 1.6 0.3 Point Contact Unit Debris DBA_S1013 441873 6065316 2.0 2.0 1.5 Geological Boulder B20007 (32m) DBA_S1014 442118 6066677 2.8 1.3-0.4 Geological Depression DBA_S1015 441443 6067048 1.6 1.6 0.6 Point Contact Unit Debris DBA_S1016 440975 6067170 1.6 1.3 0.4 Geological Boulder DBA_S1017 440843 6065703 1.1 0.7 0.4 Point Contact Unit Debris DBA_S1018 440612 6065642 6.8 1.7 0.7 Point Contact Unit Debris DBA_S1019 439896 6065588 2.1 0.9 0.8 Point Contact Unit Debris DBA_S1020 440211 6065113 2.4 1.5 0.8 Geological Boulder DBA_S1021 440034 6065626 1.7 1.2 1.6 Geological Boulder DBA_S1022 440253 6066304 2.1 1.4 0.7 Geological Boulder DBA_S1023 439690 6065822 1.9 0.5 0.4 Point Contact Unit Debris DBA_S1024 439540 6065830 2.3 1.4 0.4 Point Contact Unit Debris DBA_S1025 439063 6064683 5.9 1.7 0.7 Point Contact Unit Debris DBA_S1026 438255 6064073 1.0 0.7 0.9 Point Contact Unit Debris DBA_S1027 438430 6063542 1.3 0.9 0.6 Point Contact Unit Debris DBA_M6007 (32m) DBA_S1028 439689 6066712 1.7 1.4 0.5 Geological Boulder DBA_S1029 439725 6067106 3.2 1.0 0.6 Geological Boulder DBA_S1030 439335 6066625 1.2 1.0 0.3 Geological Boulder DBA_S1031 439605 6067369 2.2 0.8-0.7 Geological Depression DBA_S1032 439368 6067304 3.6 1.1 0.5 Point Contact Unit Debris DBA_S1033 437924 6065768 2.3 1.2 0.8 Point Contact Unit Debris DBA_S1034 437831 6065592 1.4 0.8 0.4 Geological Boulder DBA_S1035 437223 6065294 1.2 1.0 0.4 Point Contact Unit Debris DBA_S1036 437495 6064673 1.4 1.4 0.3 Point Contact Unit Debris DBA_S1037 436082 6064075 2.0 1.2 0.3 Point Contact Unit Debris DBA_S1038 436782 6060137 2.2 1.2 0.8 Point Contact Unit Debris DBA_S1039 435417 6060666 2.4 1.2 0.9 Point Contact Unit Debris DBA_S1040 434540 6062648 1.1 0.8 0.5 Geological Boulder DBA_S1041 428466 6059645 38.1 13.2 0.5 Linear Contact Linear Debris Possible buried object or sediment disturbance DBA_S1042 427949 6060240 14.4 2.9-0.7 Geological Depression DBA_S1043 426403 6060363 3.2 1.5-0.2 Geological Depression DBA_S1044 428178 6061099 4.0 3.0-0.3 Geological Depression DBA_S1046 427180 6062285 3.0 2.9-0.2 Geological Depression DBA_S1049 428908 6062546 3.5 2.5-0.2 Geological Depression Page 1 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S1050 427673 6062747 3.1 1.8 nmd Geological Depression DBA_S1051 427862 6062899 3.1 0.6 nmd Geological Depression DBA_S1052 428047 6063100 5.9 2.4 nmd Geological Area of Depressions DBA_S1053 429931 6062879 4.8 4.0-0.7 Geological Depression DBA_S1055 425788 6063530 3.9 0.9 0.4 Point Contact Unit Debris DBA_S1057 427577 6063471 2.4 2.1 nmd Geological Area of Depressions DBA_S1058 427533 6063940 1.4 0.5 nmh Point Contact Unit Debris DBA_S1059 428227 6065559 1.6 1.4 nmd Geological Depression DBA_S1060 426241 6065609 2.0 1.2 nmh Point Contact Unit Debris DBA_S1061 432840 6063150 6.2 1.5 0.6 Point Contact Unit Debris DBA_S1062 433733 6064165 13.7 6.2-0.6 Geological Area of Depressions DBA_S1063 433776 6064083 1.7 0.6 0.9 Point Contact Unit Debris DBA_S1069 432519 6065216 2.0 0.8 0.2 Point Contact Unit Debris DBA_S1071 432604 6066124 2.7 2.7 0.3 Point Contact Unit Debris Double shadow on target DBA_S1072 434197 6066317 2.5 0.5 0.5 Geological Boulder B20009 (8m) DBA_S1073 433905 6066841 3.9 3.0-0.3 Geological Depression DBA_S1074 433836 6067070 2.6 2.5 0.4 Point Contact Unit Debris DBA_S1076 434185 6067274 2.4 1.9 0.5 Point Contact Unit Debris DBA_S1077 434259 6067166 1.3 0.9 0.4 Geological Boulder DBA_S1078 434414 6066820 0.5 0.3 0.2 Point Contact Unit Debris DBA_S1079 434387 6066620 0.6 0.2 0.3 Geological Boulder DBA_S1080 435578 6066244 2.3 1.2 0.4 Point Contact Unit Debris DBA_S1081 434890 6066336 11.4 7.5-0.3 Geological Area of Depressions DBA_S1082 434758 6068099 3.3 2.8 0.5 Point Contact Unit Debris DBA_S1084 435473 6067122 0.6 0.3 0.4 Point Contact Unit Debris DBA_S1085 436237 6066581 5.2 2.8 1.5 Point Contact Unit Debris DBA_S1086 435923 6067465 3.6 2.6 0.5 Point Contact Unit Debris DBA_S1087 436170 6067376 1.9 1.1 0.4 Point Contact Unit Debris DBA_S1088 436710 6067499 4.3 2.3-0.5 Geological Depression DBA_S1089 436625 6067611 5.1 3.7-0.8 Geological Depression DBA_S1090 439033 6069635 5.0 3.9-0.3 Geological Depression DBA_S1091 439178 6071068 5.9 5.1 0.7 Point Contact Unit Debris DBA_S1092 438513 6072044 4.0 1.8-0.3 Geological Depression DBA_S1093 440616 6071437 1.5 0.5-0.2 Geological Depression DBA_S1094 440245 6072952 5.1 2.7 0.1 Point Contact Unit Debris DBA_S1096 449863 6079668 3.8 3.0-0.2 Geological Depression DBA_S1097 449113 6080432 3.3 2.7-0.3 Geological Depression DBA_S1098 450602 6081932 5.2 4.7 0.6 Point Contact Unit Debris DBA_S1099 450453 6082183 16.8 10.3 1.8 Point Contact Unit Debris DBA_S1100 446452 6082444 3.8 2.1-0.3 Geological Depression DBA_S1101 451364 6083657 2.8 1.1 0.7 Geological Boulder DBA_S1102 451329 6083806 3.3 2.5-0.4 Geological Depression DBA_S1103 451457 6084096 4.8 3.9-0.4 Geological Depression DBA_S1104 451608 6084091 2.9 1.5-0.4 Geological Depression DBA_S1105 451587 6084344 8.6 3.7 0.5 Point Contact Unit Debris DBA_S1106 452375 6084467 1.4 1.1 0.8 Point Contact Unit Debris DBA_S1107 451745 6085155 5.1 3.3 nmd Geological Depression DBA_S1108 453482 6084156 3.0 2.7 1.3 Point Contact Unit Debris Page 2 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S1109 454257 6085692 7.0 3.8-0.4 Geological Depression DBA_S1110 452424 6086452 4.9 2.0 nmd Geological Depression DBA_S1111 451555 6085401 7.1 4.9 nmd Geological Depression DBA_S1112 451982 6081689 4.2 3.2-0.5 Geological Depression DBA_S1113 449001 6082606 5.0 4.7 nmd Geological Depression DBA_S1114 451449 6089659 4.0 0.9-0.3 Geological Depression DBA_S1115 450050 6087281 4.8 1.8 nmh Point Contact Unit Debris DBA_S1116 449646 6087831 0.9 0.5 0.5 Point Contact Unit Debris DBA_S1117 448128 6086029 6.9 0.8 0.6 Point Contact Unit Debris DBA_S1118 446031 6084870 11.4 2.5-0.2 Geological Depression DBA_S1121 441861 6078534 11.8 1.7 0.8 Linear Contact Linear Debris DBA_M5102 (19m) DBA_S1123 439510 6074628 6.4 1.0 0.1 Point Contact Unit Debris DBA_S1124 436069 6072688 2.5 1.8-0.6 Geological Depression DBA_S1125 435302 6071155 3.5 3.0 nmd Geological Depression DBA_S1126 434305 6069651 6.8 3.6 0.6 Geological Boulder DBA_S1127 433691 6070979 1.1 0.5 nmh Point Contact Unit Debris DBA_S1130 432572 6069597 2.3 1.9 0.6 Geological Boulder DBA_S1131 432391 6069183 2.0 0.6 0.4 Point Contact Unit Debris DBA_S1132 432119 6069000 5.8 1.6 0.9 Point Contact Unit Debris DBA_S1133 432054 6068824 6.3 1.3 0.5 Point Contact Unit Debris DBA_S1134 431792 6069012 2.0 1.8 0.4 Geological Boulder DBA_S1135 432232 6069830 15.0 1.5 nmh Point Contact Unit Debris DBA_S1136 431657 6070212 2.4 0.3 0.4 Geological Boulder DBA_S1137 431609 6069813 3.5 3.0 0.2 Geological Boulder DBA_S1138 431277 6069441 2.0 2.0 0.4 Point Contact Unit Debris DBA_S1139 430220 6069337 2.5 2.0 0.6 Point Contact Unit Debris DBA_S1140 430182 6070201 0.8 0.3 0.4 Geological Boulder DBA_S1141 430963 6070466 15.0 10.0 0.8 Geological Boulder Cluster DBA_S1142 430332 6070573 2.1 0.9 0.4 Point Contact Unit Debris DBA_S1143 423406 6065982 1.6 0.8 nmh 96.0 Point Contact Unit Debris DBA_S1144 421705 6064407 0.9 0.3 nmh 66.1 Point Contact Unit Debris DBA_S1145 420309 6066148 1.5 1.0 0.3 Geological Boulder DBA_S1146 420641 6066871 6.6 3.8-0.1 Geological Depression DBA_S1147 420125 6067942 5.3 1.4 0.8 Point Contact Unit Debris DBA_S1163 426225 6067697 10.6 1.8 nmd Geological Depression DBA_S1164 426743 6069112 1.2 0.7 nmh 68.2 Point Contact Unit Debris DBA_S1170 426110 6072758 0.5 0.5 0.1 Geological Boulder DBA_S1171 429497 6069544 1.4 0.7 0.3 Geological Boulder DBA_S1172 427886 6069724 1.2 0.7 0.3 Geological Boulder DBA_S1173 429099 6070435 1.2 0.6 0.6 Geological Boulder DBA_S1174 429676 6070230 8.0 2.5 0.5 Point Contact Unit Debris DBA_S1175 429132 6070601 3.8 2.6 nmh Point Contact Unit Debris DBA_S1176 428988 6071203 0.8 0.5 0.3 Geological Boulder DBA_S1177 429375 6071202 1.4 0.7 0.1 Geological Boulder DBA_S1178 428785 6071544 0.7 0.4 0.6 Geological Boulder DBA_S1179 430040 6071769 1.0 0.5 0.5 Geological Boulder DBA_S1181 430423 6072073 1.5 0.7 0.4 Geological Boulder DBA_S1183 428667 6072389 1.9 0.5 0.6 Geological Boulder Page 3 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S1184 427188 6072246 1.8 1.2 0.6 Point Contact Unit Debris DBA_S1185 430265 6067672 1.4 0.9 0.6 Geological Boulder DBA_S1186 432353 6071406 1.7 0.5 0.4 Geological Boulder DBA_S1188 435804 6075603 5.0 2.0 0.5 Geological Boulder DBA_S1189 435777 6076719 31.7 0.2 nmh Linear Contact Linear Debris DBA_S1191 431307 6064061 2.1 1.0 0.2 Point Contact Unit Debris DBA_S1195 435791 6080057 185.5 nmw nmd 235.0 Linear Contact Scar (Trawl or Anchor) DBA_S1196 438958 6082159 0.5 0.1 nmh 249.2 Point Contact Unit Debris DBA_S1197 438380 6083037 2.6 0.5 0.2 242.4 Point Contact Unit Debris DBA_S1204 449492 6080970 189.5 145.8 nmd 90.7 Linear Contact Scar (Trawl or Anchor) DBA_S1209 447218 6089580 23.9 19.6 nmh Environmental Fish Return from fish shoal DBA_S1210 447140 6090395 5.7 1.0 0.2 Linear Contact Linear Debris DBA_S1211 445971 6091101 3.7 2.5-0.2 Geological Depression DBA_S1212 445653 6091411 2.1 1.8-0.2 Geological Depression DBA_S1213 445771 6092581 3.1 1.0-0.3 Geological Depression DBA_S1214 445442 6092448 2.0 1.4-0.2 Geological Depression DBA_S1215 444975 6092765 1.9 1.1-0.3 Geological Depression DBA_S1217 420055 6072970 2.5 0.3 0.5 Geological Boulder DBA_S1218 421162 6072555 3.1 1.3 0.6 Geological Boulder DBA_S1219 421326 6072896 0.8 0.7 0.9 Geological Boulder DBA_S1220 421403 6073006 1.3 1.1 0.9 Geological Boulder DBA_S1221 421461 6073196 1.6 1.4 0.4 Geological Boulder DBA_S1222 421436 6073312 0.8 0.7 0.6 Geological Boulder DBA_S1223 420945 6073362 204.7 162.4 0.5 Geological Boulder Cluster DBA_S1224 420621 6073113 2.2 0.7 0.7 Geological Boulder DBA_S1225 420474 6073378 3.9 1.6 0.9 Geological Boulder DBA_S1226 420570 6073574 7.0 2.1 0.3 Geological Boulder DBA_S1227 420661 6073613 230.1 177.4 0.9 Geological Boulder Cluster DBA_S1228 420903 6073722 3.7 1.3 0.8 Geological Boulder DBA_S1229 420909 6073863 4.9 1.5 0.9 Geological Boulder DBA_S1230 420832 6073875 4.5 0.9 0.3 Geological Boulder DBA_S1231 420449 6073869 40.0 30.0 0.5 Geological Boulder Cluster DBA_S1233 423149 6072538 2.0 1.1 0.5 Geological Boulder DBA_S1235 423267 6072845 20.0 0.5-0.3 204.5 Linear Contact Scar (Trawl or Anchor) DBA_S1240 423357 6073544 3.1 2.4 nmd Geological Depression DBA_S1241 423379 6073594 5.1 2.8-0.3 Geological Depression DBA_S1242 423388 6073710 2.9 1.0 0.4 Point Contact Unit Debris DBA_S1243 422901 6073822 2.0 0.7 0.7 Geological Boulder DBA_S1244 422530 6074040 1.0 0.7 0.4 Geological Boulder DBA_S1245 422428 6073916 0.8 0.7 1.0 Geological Boulder DBA_S1246 422052 6072334 2.4 0.9 0.3 Point Contact Unit Debris DBA_S1254 420467 6074851 3.7 1.5 0.7 Geological Boulder DBA_S1255 419957 6074668 1.4 1.0 0.5 Geological Boulder DBA_S1256 419422 6075066 25.1 10.7 0.4 Geological Boulder Cluster DBA_S1257 419732 6075110 1.0 0.3 0.6 Geological Boulder DBA_S1258 419475 6075168 35.8 24.1 0.4 Geological Boulder Cluster DBA_S1259 419631 6075280 1.4 0.5 0.5 Geological Boulder DBA_S1260 419956 6075285 1.5 0.4 0.6 Geological Boulder Page 4 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S1261 419516 6075606 0.9 0.7 0.4 Geological Boulder DBA_S1262 419613 6075602 4.5 1.2 0.9 Geological Boulder DBA_S1263 419700 6075644 2.0 1.2 0.7 Geological Boulder DBA_S1264 419423 6075780 3.2 1.4 0.9 Geological Boulder DBA_S1265 419799 6075963 2.8 2.3 0.7 Geological Boulder DBA_S1266 419821 6075911 1.9 0.5 0.6 Geological Boulder DBA_S1267 419957 6075870 2.3 0.8 0.6 Geological Boulder DBA_S1268 420170 6076066 2.2 1.4 0.6 Geological Boulder DBA_S1269 420223 6076010 65.7 43.1 0.4 Geological Boulder Cluster DBA_S1270 420319 6075911 5.6 1.6 0.9 Geological Boulder DBA_S1271 420446 6075957 1.4 0.9 0.3 Geological Boulder DBA_S1272 420383 6076176 4.4 0.9 0.5 Geological Boulder DBA_S1273 418931 6075866 1.0 0.9 0.3 Geological Boulder DBA_S1274 419155 6076285 1.2 1.1 0.6 Point Contact Unit Debris DBA_S1275 419241 6076473 2.7 1.9 0.8 Point Contact Unit Debris DBA_S1276 419492 6076555 1.1 1.0 0.6 Geological Boulder DBA_S1277 419230 6076546 2.4 1.5 0.6 Point Contact Unit Debris DBA_S1278 418346 6076165 1.9 1.4 0.6 Point Contact Unit Debris DBA_S1279 418319 6076167 0.9 0.3 0.2 Point Contact Unit Debris DBA_S1280 417493 6075563 1.6 1.2 0.7 Geological Boulder DBA_S1281 419272 6076913 3.8 0.7 0.6 Geological Boulder DBA_S1282 419313 6076919 2.4 0.7 0.6 Geological Boulder DBA_S1283 419310 6076947 1.4 1.1 0.7 Point Contact Unit Debris DBA_S1284 419345 6076953 2.7 0.9 0.4 Point Contact Unit Debris DBA_S1285 419325 6076987 5.7 1.3 0.3 Geological Boulder DBA_S1286 418964 6076687 1.9 1.0 0.6 Geological Boulder DBA_S1287 419128 6076867 1.4 0.3 0.5 Geological Boulder DBA_S1288 419407 6077144 27.7 24.1 0.7 Geological Boulder Cluster DBA_S1289 419450 6077175 1.9 1.6 0.7 Point Contact Unit Debris DBA_S1290 419160 6077293 2.2 1.0 0.3 Point Contact Unit Debris DBA_S1291 419079 6077298 1.8 1.8 0.9 Point Contact Unit Debris DBA_S1292 419011 6077256 6.0 0.5 0.6 Linear Contact Linear Debris DBA_S1293 418917 6077263 2.1 1.9 0.4 Point Contact Unit Debris DBA_S1294 419075 6077427 3.2 2.2 0.3 Point Contact Unit Debris DBA_S1295 419003 6077453 2.6 0.5 0.6 Point Contact Unit Debris DBA_S1296 418911 6077605 2.6 1.1 0.4 Geological Boulder DBA_S1297 418902 6077589 2.9 0.9 0.3 Point Contact Unit Debris DBA_S1298 417475 6075648 1.5 0.3 0.4 Point Contact Unit Debris DBA_S1299 417096 6076375 2.1 1.4 0.3 Point Contact Unit Debris DBA_S1300 418150 6076390 3.2 1.5 0.6 Point Contact Unit Debris DBA_S1301 418177 6076440 1.6 0.8 0.2 Point Contact Unit Debris DBA_S1302 417924 6076476 3.0 0.8 0.7 Point Contact Unit Debris DBA_S1303 417759 6076571 3.2 0.5 0.3 Point Contact Unit Debris DBA_S1304 417871 6076640 0.6 0.3 0.3 Geological Boulder DBA_S1305 418334 6076442 1.1 1.0 0.6 Point Contact Unit Debris DBA_S1306 418765 6076400 1.2 1.0 0.6 Geological Boulder DBA_S1307 417829 6076800 77.6 66.6 0.6 Geological Boulder Cluster DBA_S1308 418119 6076942 27.6 16.0 0.6 Geological Boulder Cluster Page 5 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S1309 418250 6076764 2.9 2.2 0.4 Point Contact Unit Debris DBA_S1310 418496 6076606 5.3 2.2 0.6 Point Contact Unit Debris DBA_S1311 418667 6076844 1.1 0.6 0.8 Point Contact Unit Debris DBA_S1312 418382 6077133 1.6 1.0 0.3 Point Contact Unit Debris DBA_S1313 418392 6077167 3.0 2.5 0.3 Point Contact Unit Debris DBA_S1314 418621 6077199 7.6 5.9-3.4 Geological Depression DBA_S1315 418346 6077289 3.2 1.5 0.5 Point Contact Unit Debris DBA_S1316 418162 6077322 66.8 17.6 0.6 Geological Boulder Cluster DBA_S1317 418142 6077509 1.7 1.1 0.7 Point Contact Unit Debris DBA_S1318 418287 6077441 3.0 2.9 0.7 Point Contact Unit Debris DBA_S1319 418679 6077488 7.0 3.1-1.1 Geological Depression DBA_S1320 418485 6077424 2.5 1.5 0.4 Point Contact Unit Debris DBA_S1321 419812 6077399 14.4 4.3-0.6 Geological Depression DBA_S1322 419760 6077499 6.6 4.2-0.7 Geological Depression DBA_S1323 419585 6077456 1.4 0.5 0.6 Geological Boulder DBA_S1324 419038 6077632 1.3 1.1 0.4 Point Contact Unit Debris DBA_S1325 419578 6077703 2.1 1.8 0.4 Point Contact Unit Debris DBA_S1326 419254 6077666 0.8 0.8 0.5 Geological Boulder DBA_S1327 419322 6077764 1.6 0.4 0.2 Point Contact Unit Debris DBA_S1328 419307 6077770 1.4 0.3 0.7 Point Contact Unit Debris DBA_S1329 419249 6077658 2.6 0.5 0.4 Point Contact Unit Debris DBA_S1330 419273 6077693 1.5 1.0 0.3 Point Contact Unit Debris DBA_S1331 419136 6077753 2.1 1.1 0.5 Point Contact Unit Debris DBA_S1332 418918 6077869 2.2 1.3 0.5 Point Contact Unit Debris DBA_S1333 418509 6077661 4.0 2.1 0.4 Point Contact Unit Debris DBA_S1334 418460 6077884 1.7 1.3 0.7 Geological Boulder DBA_S1335 418680 6078027 1.1 0.7 0.2 Geological Boulder DBA_S1336 419192 6077893 3.6 2.2 0.3 Point Contact Unit Debris DBA_S1337 419238 6077964 1.3 0.5 0.6 Point Contact Unit Debris DBA_S1338 419051 6077934 126.4 76.6 0.8 Geological Boulder Cluster DBA_S1339 418983 6077963 2.8 1.5 0.5 Point Contact Unit Debris DBA_S1340 419048 6078041 5.4 3.5-0.8 Geological Depression DBA_S1341 419334 6078029 63.8 61.0 0.4 Geological Boulder Cluster DBA_S1342 419245 6078229 6.3 4.7-1.5 Geological Depression DBA_S1343 419219 6078220 4.0 3.3-0.9 Geological Depression DBA_S1344 419256 6078117 57.6 51.8 0.4 Geological Boulder Cluster DBA_S1345 419125 6078184 4.8 2.9-2.1 Geological Depression DBA_S1346 419077 6078148 4.4 4.1 0.9 Point Contact Unit Debris DBA_S1347 419035 6078107 7.0 4.0-1.1 Geological Depression DBA_S1348 418955 6078110 5.2 3.3-0.4 Geological Depression DBA_S1349 418914 6078428 3.3 3.2-0.4 Geological Depression DBA_S1350 418624 6078290 7.3 4.3-0.9 Geological Depression DBA_S1351 418573 6078283 3.7 3.0 0.4 Point Contact Unit Debris DBA_S1352 416971 6076339 3.0 1.6 1.6 Geological Boulder DBA_S1353 416876 6076440 2.1 1.0 0.5 Point Contact Unit Debris DBA_S1354 416917 6076500 2.2 0.8 0.6 Geological Boulder DBA_S1355 416945 6076481 1.8 1.5 0.7 Point Contact Unit Debris DBA_S1356 411757 6071783 2.8 1.3 0.5 Point Contact Unit Debris Page 6 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S1357 411969 6073048 2.7 2.0 0.2 Point Contact Unit Debris DBA_S1358 412472 6075084 2.1 1.3 0.4 Point Contact Unit Debris DBA_S1359 412519 6076437 3.2 0.6 0.1 Point Contact Unit Debris DBA_S1360 413630 6075888 0.8 0.5 0.6 Point Contact Unit Debris DBA_S1361 413840 6076065 2.1 0.4 0.6 Point Contact Unit Debris DBA_S1362 413627 6076202 8.8 1.3 0.4 Linear Contact Linear Debris DBA_S1363 415107 6075664 1.3 0.3 0.7 Point Contact Unit Debris DBA_S1364 415104 6075895 2.0 1.5 1.3 Point Contact Unit Debris DBA_S1365 415146 6076221 1.4 0.8 0.9 Point Contact Unit Debris DBA_S1366 413960 6076885 4.9 1.2 0.7 Point Contact Unit Debris DBA_S1367 413246 6077308 1.3 0.2 0.1 Point Contact Unit Debris DBA_S1368 413477 6077767 0.7 0.5 0.4 Point Contact Unit Debris DBA_S1369 413413 6077880 42.3 20.9 0.5 Geological Boulder Cluster DBA_S1370 412954 6078190 8.4 1.7 0.6 Point Contact Unit Debris B20018 (6m) DBA_S1371 412752 6078378 1.8 0.8 0.4 Geological Boulder B20019 (2m) DBA_S1372 412646 6078406 4.5 0.3 0.5 Point Contact Unit Debris DBA_S1373 413601 6078225 7.8 1.3 0.5 Linear Contact Linear Debris DBA_S1374 413298 6078334 3.0 1.1 0.8 Point Contact Unit Debris DBA_S1375 417688 6077202 4.5 2.3 0.4 Point Contact Unit Debris DBA_S1376 417513 6077188 6.2 0.5 0.5 Linear Contact Linear Debris DBA_S1377 417507 6077184 3.1 1.4 0.9 Point Contact Unit Debris DBA_S1378 417226 6077314 1.1 0.3 0.2 Point Contact Unit Debris DBA_S1379 417916 6077499 4.3 1.5 1.4 Point Contact Unit Debris DBA_S1380 417597 6077513 0.8 0.8 0.6 Geological Boulder DBA_M6136 (41m) DBA_S1381 417597 6077555 0.9 0.8 0.5 Point Contact Unit Debris DBA_S1382 417614 6077574 6.6 6.4 0.6 Point Contact Unit Debris DBA_S1383 417077 6077552 3.3 1.4 0.7 Point Contact Unit Debris DBA_S1384 417073 6077594 3.6 1.1 1.5 Point Contact Unit Debris DBA_S1385 417700 6077631 88.9 63.7 0.5 Geological Boulder Cluster DBA_S1386 417625 6077674 1.5 0.8 0.3 Point Contact Unit Debris DBA_S1387 417633 6077754 2.5 1.1 0.3 Point Contact Unit Debris DBA_M6138 (9m) DBA_S1388 417466 6077780 2.4 1.9 0.7 Point Contact Unit Debris DBA_S1389 417363 6077942 6.1 0.7 0.4 Linear Contact Linear Debris DBA_S1390 417213 6077942 2.0 0.9 0.3 Point Contact Unit Debris DBA_S1391 417009 6077825 2.0 1.0 0.7 Geological Boulder DBA_S1392 417023 6077847 1.4 0.5 0.6 Geological Boulder DBA_S1393 416947 6077879 0.8 0.5 0.8 Geological Boulder DBA_S1394 416964 6077894 2.9 1.6 0.8 Point Contact Unit Debris DBA_S1395 417016 6077892 1.4 0.6 0.5 Geological Boulder DBA_S1396 417017 6077929 1.8 1.0 0.8 Point Contact Unit Debris DBA_S1397 416917 6077972 2.6 1.6 0.7 Point Contact Unit Debris DBA_S1398 416954 6078002 2.2 1.0 0.7 Point Contact Unit Debris DBA_S1399 418114 6077819 202.4 125.8 0.6 Geological Boulder Cluster DBA_S1400 417965 6077946 3.2 1.0 0.9 Point Contact Unit Debris DBA_S1401 417552 6078070 1.3 1.1 0.2 Point Contact Unit Debris DBA_S1402 417457 6078057 52.0 44.7 0.5 Geological Boulder Cluster DBA_S1403 418243 6078031 4.7 1.0 0.3 Point Contact Unit Debris DBA_S1404 418176 6078098 3.1 1.3 0.9 Point Contact Unit Debris Page 7 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S1405 417962 6078098 4.1 1.5 0.7 Point Contact Unit Debris DBA_S1406 418003 6078130 2.7 0.9 1.2 Point Contact Unit Debris DBA_S1407 417868 6078134 4.4 1.0 0.5 Point Contact Unit Debris DBA_S1408 418044 6078245 1.9 0.5 0.9 Geological Boulder DBA_S1409 418228 6078288 1.3 0.8 0.5 Geological Boulder DBA_S1410 418673 6078673 99.4 60.1 0.8 Geological Boulder Cluster DBA_S1411 418436 6078703 0.8 0.8 0.5 Geological Boulder DBA_S1412 418199 6078709 1.8 1.2 1.4 Point Contact Unit Debris DBA_S1413 418074 6078810 1.9 0.5 0.8 Point Contact Unit Debris DBA_S1414 417814 6078799 2.7 0.4 0.9 Point Contact Unit Debris DBA_S1415 415492 6077875 9.5 6.0-0.9 Geological Depression DBA_S1416 415632 6078037 3.6 1.0 0.6 Point Contact Unit Debris DBA_S1417 415838 6077957 11.9 7.1 0.5 Geological Boulder Cluster DBA_S1418 416650 6078029 2.1 0.5 0.6 Point Contact Unit Debris DBA_S1419 416281 6078224 81.7 68.3 0.5 Geological Boulder Cluster DBA_S1420 416280 6078364 39.7 24.8 0.7 Geological Boulder Cluster DBA_S1421 416370 6078302 2.4 0.8 0.5 Point Contact Unit Debris DBA_S1422 416140 6078580 2.1 0.6 0.3 Point Contact Unit Debris DBA_S1423 416541 6078478 1.2 0.8 0.4 Point Contact Unit Debris DBA_S1424 416789 6078187 1.9 0.4 0.9 Geological Boulder DBA_S1425 416993 6078157 9.5 3.2 0.7 Point Contact Unit Debris DBA_S1426 417322 6078115 2.0 1.3 1.0 Point Contact Unit Debris DBA_S1427 417000 6078336 2.9 0.8 0.7 Point Contact Unit Debris DBA_S1428 417124 6078455 2.0 1.9 0.5 Geological Boulder DBA_S1429 417024 6078474 0.8 0.3 1.0 Point Contact Unit Debris DBA_S1430 417496 6078274 2.6 1.9 1.0 Point Contact Unit Debris DBA_S1431 417473 6078381 2.8 0.7 0.4 Point Contact Unit Debris DBA_S1432 417289 6078565 1.6 0.8 0.8 Point Contact Unit Debris DBA_S1433 417298 6078605 3.9 2.3 0.4 Point Contact Unit Debris DBA_S1434 417124 6078587 2.1 0.5 0.5 Point Contact Unit Debris DBA_S1435 416586 6078645 3.0 0.8 0.7 Point Contact Unit Debris DBA_S1436 416489 6078685 3.7 2.5 0.4 Point Contact Unit Debris DBA_S1437 416612 6078716 3.7 1.2 0.5 Point Contact Unit Debris DBA_S1438 416807 6078712 114.7 76.5 0.3 Geological Boulder Cluster DBA_S1439 416775 6078829 3.2 0.8 0.5 Point Contact Unit Debris DBA_S1440 417076 6078781 1.8 1.6 0.9 Point Contact Unit Debris DBA_S1441 416931 6078963 2.6 1.3 0.2 Point Contact Unit Debris DBA_S1442 416977 6078983 3.1 1.3 0.8 Point Contact Unit Debris DBA_S1443 417256 6078968 1.3 0.5 1.0 Geological Boulder DBA_S1444 416083 6079004 4.2 0.2 0.1 Point Contact Unit Debris DBA_S1445 414843 6079464 1.1 0.2 0.0 Point Contact Unit Debris DBA_S1446 415376 6079497 1.2 1.1 0.9 Point Contact Unit Debris DBA_S1447 417531 6078861 2.4 1.6 0.8 Point Contact Unit Debris DBA_S1448 417456 6079016 0.8 0.6 0.3 Geological Boulder DBA_S1449 417610 6079143 3.3 2.5 0.6 Point Contact Unit Debris DBA_S1450 417802 6079146 16.0 1.8 1.4 Geological Boulder Cluster DBA_S1451 417666 6079343 2.6 1.5 0.6 Point Contact Unit Debris DBA_S1452 417487 6079357 1.1 1.1 0.5 Point Contact Unit Debris Page 8 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S1453 417527 6079360 1.5 1.3 0.3 Point Contact Unit Debris DBA_S1454 417589 6079429 72.2 36.8 0.5 Geological Boulder Cluster DBA_S1455 417694 6079493 3.9 1.2 0.6 Point Contact Unit Debris DBA_S1456 417742 6079738 4.3 4.3-0.6 Geological Depression DBA_S1457 417806 6079768 5.7 1.4-0.8 Geological Depression DBA_S1458 417541 6079816 1.2 1.0 0.3 Point Contact Unit Debris DBA_S1459 417297 6079971 0.6 0.5 1.1 Point Contact Unit Debris DBA_S1460 417034 6079880 0.6 0.2 0.8 Point Contact Unit Debris DBA_S1461 416373 6079290 22.7 15.5 2.0 Geological Boulder Cluster DBA_S1462 418190 6081103 1.8 1.5 0.2 Point Contact Unit Debris DBA_S1463 416264 6079712 1.6 1.0 0.8 Point Contact Unit Debris DBA_S1464 416280 6079722 1.5 0.8 0.9 Geological Boulder DBA_S1465 416480 6079745 11.3 1.0 1.0 Linear Contact Linear Debris DBA_S1466 416936 6080271 70.0 19.2 0.5 Geological Boulder Cluster DBA_S1467 416483 6080153 1.1 0.7 0.9 Point Contact Unit Debris DBA_S1468 416354 6080025 33.5 31.5 0.6 Geological Boulder Cluster DBA_S1469 416218 6079911 1.2 1.0 0.5 Point Contact Unit Debris DBA_S1470 416188 6079789 0.8 0.4 0.2 Point Contact Unit Debris DBA_S1471 415573 6080313 2.6 0.8 0.3 Point Contact Unit Debris DBA_S1472 415780 6080304 2.9 0.9 0.4 Point Contact Unit Debris DBA_S1473 415455 6080438 0.5 0.3 0.1 Point Contact Unit Debris DBA_S1474 416492 6080497 1.7 1.0 0.6 Point Contact Unit Debris DBA_S1475 416317 6080430 1.6 0.2 0.3 Point Contact Unit Debris DBA_S1476 416098 6080491 23.8 16.7 0.7 Geological Boulder Cluster DBA_S1477 416184 6080558 72.8 59.8 1.2 Geological Boulder Cluster DBA_S1478 416175 6080594 5.4 0.8 0.5 Linear Contact Linear Debris DBA_S1479 415857 6080685 2.7 0.6 0.5 Point Contact Unit Debris DBA_S1480 415456 6080656 155.3 93.5 1.8 Geological Boulder Cluster DBA_S1481 415435 6080832 4.3 0.6 0.3 Point Contact Unit Debris DBA_S1482 416064 6080873 3.3 1.0 0.5 Point Contact Unit Debris DBA_S1483 416102 6080925 1.1 0.5 0.5 Point Contact Unit Debris DBA_S1484 416320 6080943 61.6 48.4 1.1 Geological Boulder Cluster DBA_S1485 416285 6080961 0.8 0.5 0.6 Point Contact Unit Debris DBA_S1486 416098 6081052 2.8 0.8 0.2 Point Contact Unit Debris DBA_S1487 415779 6081063 1.7 0.3 0.5 Point Contact Unit Debris DBA_S1488 415749 6081035 3.4 0.6 0.5 Point Contact Unit Debris DBA_S1489 415617 6081050 214.6 170.0 0.8 Geological Boulder Cluster DBA_S1490 415425 6080997 2.7 0.3 0.1 Point Contact Unit Debris DBA_S1491 415424 6081082 2.8 0.7 0.2 Point Contact Unit Debris DBA_S1492 415200 6081056 2.4 0.2 0.3 Point Contact Unit Debris DBA_S1493 415208 6080219 0.8 0.3 0.2 Point Contact Unit Debris DBA_S1494 412876 6079154 3.6 0.3 0.5 Point Contact Unit Debris DBA_S1495 413185 6079310 1.8 0.8 0.4 Point Contact Unit Debris DBA_S1496 413034 6079180 3.2 0.8 0.4 Point Contact Unit Debris DBA_S1497 412503 6079774 4.1 0.8 0.6 Point Contact Unit Debris DBA_S1498 412795 6080023 0.7 0.7 0.6 Point Contact Unit Debris DBA_S1499 413399 6079993 2.9 0.7 0.5 Point Contact Unit Debris DBA_S1500 412522 6080299 1.4 0.8 0.8 Point Contact Unit Debris Page 9 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S1501 412909 6080421 1.3 1.2 0.6 Geological Boulder B20021 (6m) DBA_S1502 412569 6080481 99.7 53.9 0.3 Geological Boulder Cluster DBA_S1503 412608 6080495 1.1 1.1 0.8 Point Contact Unit Debris DBA_S1504 412848 6080364 0.8 0.5 0.6 Point Contact Unit Debris DBA_S1505 412591 6080605 0.8 0.8 0.3 Geological Boulder DBA_S1506 412462 6080794 2.7 1.0 0.6 Point Contact Unit Debris DBA_S1507 412484 6080848 0.5 0.5 0.9 Point Contact Unit Debris DBA_S1508 412522 6080844 1.5 1.3 0.6 Point Contact Unit Debris DBA_S1509 412790 6080730 4.1 2.8 0.5 Point Contact Unit Debris DBA_S1510 412963 6080672 51.0 30.4 0.5 Geological Boulder Cluster DBA_S1511 413178 6080652 6.7 2.1 0.4 Point Contact Unit Debris DBA_S1512 413454 6080950 2.0 1.5 0.9 Point Contact Unit Debris DBA_S1513 413457 6081084 32.7 22.1 0.4 Geological Boulder Cluster DBA_S1514 414834 6080830 1.3 0.8 0.5 Point Contact Unit Debris DBA_S1515 414762 6080749 2.8 0.2 0.2 Point Contact Unit Debris DBA_S1516 414696 6080877 0.6 0.6 0.3 Point Contact Unit Debris DBA_S1517 414826 6081083 1.9 1.3 0.7 Geological Boulder DBA_S1518 414562 6081099 2.3 0.8 0.4 Point Contact Unit Debris DBA_S1519 414615 6081272 1.4 1.1 1.1 Point Contact Unit Debris DBA_S1520 415616 6081136 0.4 0.2 0.0 Point Contact Unit Debris DBA_S1521 415514 6081164 0.9 0.2 0.4 Point Contact Unit Debris DBA_S1522 416044 6081305 1.8 0.6 1.0 Point Contact Unit Debris DBA_S1523 415933 6081296 2.2 0.7 0.5 Point Contact Unit Debris DBA_S1524 415826 6081255 3.7 0.6 0.3 Point Contact Unit Debris DBA_S1525 415798 6081272 4.0 0.8 0.5 Point Contact Unit Debris DBA_S1526 415739 6081358 6.6 1.4 0.6 Point Contact Unit Debris DBA_S1527 415705 6081484 1.5 0.9 0.4 Point Contact Unit Debris DBA_S1528 415740 6081573 3.5 0.8 0.3 Point Contact Unit Debris DBA_S1529 415669 6081576 2.5 1.0 0.4 Point Contact Unit Debris DBA_S1530 415316 6081653 0.7 0.6 0.5 Point Contact Unit Debris DBA_S1531 415695 6081653 1.7 0.5 0.3 Point Contact Unit Debris DBA_S1532 415733 6081687 1.9 0.8 0.6 Point Contact Unit Debris DBA_S1533 415733 6081708 5.4 0.8 0.6 Linear Contact Linear Debris DBA_S1534 415708 6081695 185.6 138.4 0.7 Geological Boulder Cluster DBA_S1535 415462 6081578 4.7 1.0 0.6 Point Contact Unit Debris DBA_S1536 415571 6081767 58.3 43.7 0.6 Geological Boulder Cluster DBA_S1537 415609 6081925 1.7 0.5 0.3 Point Contact Unit Debris DBA_S1538 415622 6081962 1.3 0.9 0.4 Point Contact Unit Debris DBA_S1539 415305 6081964 7.9 1.8 1.0 Point Contact Unit Debris DBA_S1540 415317 6081981 1.5 0.8 0.6 Point Contact Unit Debris DBA_S1541 415383 6082013 1.4 0.5 0.5 Point Contact Unit Debris DBA_S1542 415387 6082009 1.7 0.8 0.6 Point Contact Unit Debris DBA_S1543 415471 6081985 1.1 1.0 0.5 Point Contact Unit Debris DBA_S1544 415487 6082007 1.3 1.0 0.6 Geological Boulder DBA_S1545 415654 6082006 1.6 1.0 0.6 Point Contact Unit Debris DBA_S1546 415558 6082043 2.9 0.8 0.5 Point Contact Unit Debris DBA_S1547 415484 6082099 2.0 1.0 0.6 Point Contact Unit Debris DBA_S1548 415577 6082203 2.1 0.8 0.4 Point Contact Unit Debris Page 10 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S1549 415421 6082182 1.2 0.6 0.5 Point Contact Unit Debris DBA_S1550 415323 6082093 1.4 1.3 0.4 Point Contact Unit Debris DBA_S1551 415163 6082056 1.8 1.7 0.5 Point Contact Unit Debris DBA_S1552 415018 6082103 1.2 0.9 1.5 Point Contact Unit Debris DBA_S1553 414879 6081892 1.3 0.5 0.4 Point Contact Unit Debris DBA_S1554 414797 6082032 1.7 1.6 0.5 Point Contact Unit Debris DBA_S1555 414841 6082055 0.9 0.5 0.4 Point Contact Unit Debris DBA_S1556 414839 6082058 1.2 1.0 0.5 Point Contact Unit Debris DBA_S1557 414919 6082285 1.9 0.8 0.5 Point Contact Unit Debris DBA_S1558 414655 6082204 1.9 0.5 0.6 Point Contact Unit Debris DBA_S1559 414728 6082354 1.4 0.8 0.6 Point Contact Unit Debris DBA_S1560 414705 6082430 1.2 0.5 0.7 Point Contact Unit Debris DBA_S1561 415119 6082451 3.2 0.5 0.5 Point Contact Unit Debris DBA_S1562 415235 6082418 3.9 1.3 0.6 Point Contact Unit Debris DBA_S1563 414961 6082570 2.3 0.3 0.3 Point Contact Unit Debris DBA_S1564 414852 6082584 12.4 7.0 0.5 Geological Boulder Cluster DBA_S1565 414980 6082697 2.6 0.8 0.4 Point Contact Unit Debris DBA_S1566 415001 6082709 0.9 0.7 0.5 Point Contact Unit Debris DBA_S1567 415225 6082654 1.5 0.8 0.3 Point Contact Unit Debris DBA_S1568 415242 6082770 2.5 0.8 0.4 Point Contact Unit Debris DBA_S1569 415172 6082780 1.2 0.6 1.1 Point Contact Unit Debris DBA_S1570 415109 6082799 14.2 14.0 1.5 Geological Boulder Cluster DBA_S1571 415096 6082790 14.6 13.1 1.0 Geological Boulder Cluster DBA_S1572 414976 6082767 2.4 0.8 0.8 Point Contact Unit Debris DBA_S1573 414957 6082755 6.5 1.1 0.4 Linear Contact Linear Debris DBA_S1574 414711 6081393 2.1 0.5 0.3 Point Contact Unit Debris DBA_S1575 414948 6081507 1.9 0.3 0.8 Point Contact Unit Debris DBA_S1576 414517 6081482 2.3 2.0 0.4 Point Contact Unit Debris DBA_S1577 414328 6081582 1.4 0.8 0.6 Point Contact Unit Debris DBA_S1578 414631 6081577 1.8 1.2 0.5 Point Contact Unit Debris DBA_S1579 414419 6081656 1.2 0.5 0.3 Point Contact Unit Debris DBA_S1580 414766 6081661 1.9 1.3 1.2 Point Contact Unit Debris DBA_S1581 414751 6081692 2.0 1.2 0.4 Point Contact Unit Debris DBA_S1582 414934 6081750 1.9 0.3 0.4 Geological Boulder DBA_S1583 414708 6081822 1.3 1.1 0.8 Geological Boulder DBA_S1584 414693 6081812 4.2 1.3 1.8 Point Contact Unit Debris DBA_S1585 414616 6081700 3.5 0.8 0.5 Point Contact Unit Debris DBA_S1586 414345 6081763 2.9 0.8 0.4 Point Contact Unit Debris DBA_S1587 414345 6081772 1.9 0.5 0.8 Point Contact Unit Debris DBA_S1588 414379 6081796 3.3 1.0 0.3 Point Contact Unit Debris DBA_S1589 414299 6081889 2.4 1.1 0.6 Point Contact Unit Debris DBA_S1590 414227 6082049 1.1 0.8 0.6 Point Contact Unit Debris DBA_S1591 414273 6082063 3.0 1.0 0.6 Point Contact Unit Debris DBA_S1592 414487 6082006 52.7 16.6 0.8 Cluster Contact Unit Debris 3 small items, maximum DBA_S1594 dimension (60m) 2x2x2m, possibly associated with 1594 DBA_S1593 414605 6081988 1.7 0.8 0.5 Point Contact Unit Debris DBA_S1594 414490 6082066 35.8 10.4 0.4 Cluster Contact Unit Debris 3 small items, possible DBA_S1592 associated with (60m) 1592 DBA_S1595 414472 6082129 2.1 0.5 0.4 Point Contact Unit Debris DBA_S1596 414601 6082193 2.6 1.6 0.8 Point Contact Unit Debris Page 11 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S1597 414641 6082255 1.9 1.3 0.6 Point Contact Unit Debris DBA_S1598 414938 6082283 61.6 45.4 0.7 Geological Boulder Cluster DBA_S1599 414475 6081749 1.2 0.7 0.4 Point Contact Unit Debris DBA_S1600 414146 6082272 2.3 1.8 0.3 Point Contact Unit Debris DBA_S1601 414343 6082449 2.2 1.5 0.5 Point Contact Unit Debris DBA_S1602 413995 6082427 3.5 2.0 0.6 Point Contact Unit Debris DBA_S1603 414024 6082519 1.6 0.5 0.6 Geological Boulder DBA_S1604 413733 6082547 1.2 0.5 0.4 Point Contact Unit Debris DBA_S1605 413946 6082670 1.9 1.1 0.6 Point Contact Unit Debris DBA_S1606 413904 6082846 2.0 1.7 0.6 Point Contact Unit Debris DBA_S1607 414163 6082930 4.1 1.8 0.8 Point Contact Unit Debris DBA_S1608 414763 6083098 2.5 1.6 0.7 Point Contact Unit Debris DBA_S1609 414081 6083324 2.5 1.2 0.6 Point Contact Unit Debris DBA_S1610 413588 6083627 1.6 1.0 0.7 Point Contact Unit Debris DBA_S1611 414070 6082606 6.1 1.0 0.3 Linear Contact Linear Debris DBA_S1612 421369 6080750 1.1 0.2 0.6 Point Contact Unit Debris DBA_S1613 418373 6083843 2.1 1.1 1.2 Point Contact Unit Debris DBA_S1614 418848 6083496 2.3 1.2 0.5 Point Contact Unit Debris DBA_S1615 419760 6083339 1.2 0.5 0.6 Point Contact Unit Debris DBA_S1616 419166 6083610 2.0 0.6 0.5 Point Contact Unit Debris DBA_S1619 418743 6083907 4.3 0.5 0.5 Point Contact Unit Debris DBA_S1620 419491 6084055 40.2 25.4 0.7 Geological Boulder Cluster DBA_S1622 419390 6084103 3.7 0.2 0.6 Point Contact Unit Debris DBA_S1623 418803 6084160 12.7 0.7 0.6 Linear Contact Linear Debris DBA_S1624 418979 6084112 57.1 53.0 0.6 Geological Boulder Cluster DBA_S1625 418483 6084076 2.0 1.7 0.4 Point Contact Unit Debris DBA_S1626 418403 6084335 2.0 1.0 0.2 Point Contact Unit Debris DBA_S1627 418193 6084345 2.8 0.5 0.3 Point Contact Unit Debris DBA_S1628 418174 6084403 1.4 1.3 0.5 Point Contact Unit Debris DBA_S1629 418032 6084621 1.7 0.8 0.8 Point Contact Unit Debris DBA_S1630 418106 6084791 2.7 2.6 0.6 Point Contact Unit Debris DBA_S1631 418357 6085179 2.4 0.8 0.5 Point Contact Unit Debris DBA_S1632 417922 6085278 8.3 0.3 0.5 Linear Contact Linear Debris DBA_S1633 418338 6085295 90.0 72.1 0.3 Geological Boulder Cluster DBA_S1634 418227 6085340 68.6 56.1 0.5 Geological Boulder Cluster DBA_S1635 418231 6085386 34.9 32.4-1.6 Geological Area of Depressions DBA_S1636 418114 6085384 123.9 85.1-0.4 Geological Area of Depressions DBA_S1637 418599 6085527 194.8 101.3 0.8 Geological Boulder Cluster DBA_S1638 417860 6085908 3.3 3.2-0.5 Geological Depression DBA_S1639 417846 6085881 3.7 2.5-0.7 Geological Depression DBA_S1640 417934 6085955 6.0 3.6 1.1 Point Contact Unit Debris DBA_S1641 418434 6085872 4.9 4.2 1.1 Point Contact Unit Debris With scouring around base DBA_S1642 420775 6082369 1.4 1.0 0.3 Point Contact Unit Debris DBA_S1643 420816 6082442 1.6 1.5 0.5 Point Contact Unit Debris DBA_S1644 420416 6083824 0.9 0.2 0.3 Geological Boulder B20030 (9m) DBA_S1645 420441 6084366 1.3 1.2 0.9 Geological Boulder DBA_S1646 421740 6083378 1.2 0.6 0.6 Point Contact Unit Debris DBA_S1647 423415 6082756 1.4 1.3 0.5 Point Contact Unit Debris Page 12 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S1648 423650 6083171 1.9 1.6 0.3 Point Contact Unit Debris DBA_S1649 423602 6083075 2.9 0.8 0.4 Point Contact Unit Debris DBA_S1650 423035 6083206 0.8 0.7 0.9 Point Contact Unit Debris DBA_S1651 422923 6083403 0.5 0.2 0.3 Geological Boulder DBA_S1652 423648 6084163 1.2 0.6 nmh Geological Boulder DBA_S1653 420787 6085652 1.4 0.8 0.6 Point Contact Unit Debris DBA_S1654 420159 6087349 0.6 0.5 0.3 Point Contact Unit Debris DBA_S1655 421448 6088398 17.4 1.0-0.1 Linear Contact Scar (Trawl or Anchor) DBA_S1656 419324 6088836 3.5 0.9 1.4 Point Contact Unit Debris DBA_S1657 418121 6086147 3.7 2.7-0.9 Geological Depression DBA_S1658 417946 6087745 1.4 0.9 0.4 Point Contact Unit Debris DBA_S1659 417482 6087869 3.9 0.9 0.6 Geological Boulder B20041 (11m) DBA_S1660 422670 6092835 111.5 2.1 nmd Linear Contact Scar (Trawl or Anchor) DBA_S1661 422932 6092961 114.4 4.3 nmd Linear Contact Scar (Trawl or Anchor) DBA_S1662 427617 6086766 2.0 1.1 0.4 Point Contact Unit Debris DBA_S1663 440349 6095498 5.1 2.0 0.3 Point Contact Unit Debris DBA_S1664 437001 6091636 5.2 3.5 0.2 Point Contact Unit Debris DBA_S1665 418730 6094074 1.7 1.5 0.8 Point Contact Unit Debris DBA_S1666 418697 6094059 1.6 1.4 0.6 Geological Boulder B20056 (5m) DBA_S1667 420102 6094666 2.1 2.0 0.5 Point Contact Unit Debris DBA_S1668 420204 6094215 1.3 0.5 0.4 Geological Isolated Rock <5% DBA_S1669 426253 6094498 3.0 0.7 1.2 Point Contact Unit Debris DBA_S1670 425099 6095653 4.2 0.4 0.2 51.4 Point Contact Unit Debris DBA_S1671 428604 6097897 12.3 2.1 0.2 Linear Contact Linear Debris DBA_S1672 429455 6103108 1.0 0.5 0.3 Geological Isolated Rock <5% DBA_S1673 428976 6102860 3.4 1.4 0.3 Point Contact Unit Debris DBA_S1674 429506 6102884 2.4 2.2 1.3 Point Contact Unit Debris DBA_S1675 421205 6096439 3.7 1.2 0.4 Point Contact Unit Debris DBA_S1676 420227 6096181 2.1 1.7 0.4 Point Contact Unit Debris DBA_S1677 420560 6097021 2.0 1.4 0.8 Point Contact Unit Debris DBA_S1678 420811 6097799 2.8 1.3 0.6 Geological Boulder B20072 (5m) DBA_S1679 421061 6097582 1.5 1.0 0.4 Geological Isolated Rock <5% DBA_S1680 417508 6098722 1.9 1.3 0.7 Point Contact Unit Debris DBA_S1681 417338 6098801 2.8 0.9 0.3 Point Contact Unit Debris DBA_S1682 412259 6081710 3.0 1.5 0.3 Point Contact Unit Debris DBA_S1683 412091 6081760 2.6 0.9 0.2 Point Contact Unit Debris DBA_S1684 412546 6081967 3.6 2.5 0.6 Point Contact Unit Debris DBA_S1685 412613 6082050 2.9 1.4 0.6 Point Contact Unit Debris DBA_S1686 411980 6082431 6.5 2.6 0.6 Point Contact Unit Debris DBA_S1687 412388 6082755 1.2 0.5 0.5 Point Contact Unit Debris DBA_S1688 412355 6082888 1.6 1.1 0.6 Point Contact Unit Debris DBA_S1689 412669 6083171 1.6 0.5 0.3 Geological Isolated Rock <5% DBA_S1690 413200 6083090 3.9 2.0 0.7 Point Contact Unit Debris DBA_S1691 413669 6083746 2.0 0.7 0.7 Point Contact Unit Debris DBA_S1692 413158 6083650 3.0 0.6 0.6 Point Contact Unit Debris DBA_S1693 413442 6084050 2.2 1.2 0.8 Point Contact Unit Debris DBA_S1694 412687 6083711 2.1 0.5 0.8 Point Contact Unit Debris DBA_S1695 412469 6083702 2.1 1.3 0.4 Point Contact Unit Debris Page 13 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S1696 412295 6083589 1.9 1.8 0.6 Point Contact Unit Debris DBA_S1697 412370 6083715 2.1 1.4 0.8 Point Contact Unit Debris DBA_S1698 411279 6083229 4.9 1.4 0.8 Point Contact Unit Debris DBA_S1699 411327 6083446 1.8 0.5 0.3 225.3 Point Contact Unit Debris DBA_S1700 411449 6083653 1.3 0.8 0.5 Geological Isolated Rock <5% DBA_S1701 411464 6083826 0.8 0.3 0.7 Geological Boulder DBA_S1702 411395 6083868 5.0 2.1 0.7 Point Contact Unit Debris DBA_S1703 411446 6083902 1.5 1.5 0.4 Point Contact Unit Debris DBA_S1704 411254 6084064 1.2 0.6 0.5 Geological Isolated Rock <5% DBA_S1705 411279 6084174 78.4 52.7 0.7 Geological Boulder Cluster DBA_S1706 411748 6084123 0.7 0.5 0.8 Point Contact Unit Debris DBA_S1707 411762 6084109 2.0 0.7 0.7 Point Contact Unit Debris DBA_S1708 412658 6084219 1.1 0.9 0.6 Geological Isolated Rock <5% DBA_S1709 432340 6063265 2.4 0.5 0.5 Point Contact Unit Debris DBA_S1710 454624 6079745 103.7 0.7 nmd Linear Contact Scar (Trawl or Anchor) DBA_S1711 454051 6078369 241.2 7.9 nmd 94.0 Linear Contact Scar (Trawl or Anchor) DBA_S1712 455835 6079947 128.7 4.2 nmd 242.6 Linear Contact Scar (Trawl or Anchor) DBA_S1713 429042 6104770 2.7 0.9 0.3 Point Contact Unit Debris DBA_S1714 428708 6104204 3.2 1.3 0.5 Geological Boulder DBA_S1715 427038 6101638 1.2 1.0-0.3 Geological Depression DBA_S1716 426722 6103157 1.8 1.8 0.5 Geological Boulder DBA_S1717 422218 6101715 37.5 32.4 0.3 Linear Contact Linear Debris DBA_S1718 422459 6100816 1.7 1.1-1.1 Geological Depression DBA_S1719 413222 6106279 0.9 0.3 0.6 Geological Boulder DBA_S1720 412647 6106587 1.7 0.3 0.1 Geological Boulder DBA_S1721 412266 6106489 0.3 0.2 0.3 Geological Boulder DBA_S1722 412192 6106271 0.6 0.5 0.4 Geological Boulder DBA_S1723 411024 6106082 1.1 0.7 0.4 Geological Boulder B20148 (4m) DBA_S1724 411613 6105739 1.7 1.5 0.7 Geological Boulder DBA_S1725 411755 6105523 1.3 0.9 0.6 Geological Boulder DBA_S1726 412453 6105730 2.0 1.8 0.3 Geological Boulder DBA_S1727 412759 6105600 1.0 1.0 0.4 Geological Boulder DBA_S1728 412703 6105413 3.3 2.9 1.1 Geological Boulder DBA_S1729 413362 6105311 1.4 1.2 0.4 Geological Boulder DBA_S1730 415181 6102114 3.9 0.4 0.9 Point Contact Unit Debris DBA_S1731 415264 6101851 2.2 1.6 0.7 Geological Boulder DBA_S1732 415667 6098934 3.4 0.9 0.2 Point Contact Unit Debris DBA_S1733 416386 6097768 24.6 1.2 0.5 Linear Contact Linear Debris DBA_S1734 416022 6097775 4.2 0.7 0.8 Point Contact Unit Debris DBA_S1735 413923 6097806 2.0 1.3 0.9 Geological Boulder DBA_S1736 412872 6097733 30.9 24.4-1.2 Geological Area of Depressions DBA_S1737 412684 6097722 38.5 2.2 nmd Linear Contact Scar (Trawl or Anchor) DBA_S1738 412737 6098048 6.8 0.5 nmh Linear Contact Linear Debris DBA_S1739 412368 6097331 120.4 3.0 nmd Linear Contact Scar (Trawl or Anchor) DBA_S1740 414305 6095809 1.7 1.7 0.3 Point Contact Unit Debris DBA_S1741 413395 6095129 220.8 10.9 nmd Linear Contact Scar (Trawl or Anchor) DBA_S1742 413415 6095048 198.1 10.2 nmd Linear Contact Scar (Trawl or Anchor) DBA_S1743 413353 6094428 215.6 11.0 nmd Linear Contact Scar (Trawl or Anchor) Page 14 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S1744 413323 6094425 214.1 10.7 nmd Linear Contact Scar (Trawl or Anchor) DBA_S1745 413302 6094253 248.6 9.3 nmd Linear Contact Scar (Trawl or Anchor) DBA_S1746 413326 6094185 253.1 10.3 nmd Linear Contact Scar (Trawl or Anchor) DBA_S1747 413301 6093965 242.3 10.2 nmd Linear Contact Scar (Trawl or Anchor) DBA_S1748 413266 6093919 245.5 9.8 nmd Linear Contact Scar (Trawl or Anchor) DBA_S1749 415200 6093641 3.5 2.1 0.1 Point Contact Unit Debris DBA_S1750 414432 6093357 2.2 0.7 0.5 Geological Boulder DBA_S1751 415119 6092343 30.6 2.4 nmh Linear Contact Linear Debris Associated with 1752 DBA_S1752 (71m) DBA_S1752 415063 6092300 25.5 2.4 nmh Linear Contact Linear Debris Associated with 1751 DBA_S1751 (71m) DBA_S1753 411547 6092910 6.9 3.0-0.3 Geological Depression DBA_S1754 411439 6094035 2.0 0.7 0.4 Geological Boulder DBA_S1755 411137 6094703 3.5 1.4 0.5 Geological Boulder DBA_S1756 411163 6094253 1.5 1.1 0.4 Point Contact Unit Debris DBA_S1757 420740 6091732 11.9 3.3 0.7 Point Contact Unit Debris DBA_S1758 420639 6090273 3.5 2.9 0.6 Point Contact Unit Debris DBA_S1759 417484 6090390 47.9 20.0-0.3 Geological Area of Depressions DBA_S1760 417422 6090152 4.0 1.6 0.9 Point Contact Unit Debris DBA_S1761 417439 6090036 4.9 3.4 0.8 Point Contact Unit Debris DBA_S1762 417465 6089502 2.7 0.9 0.7 Geological Boulder DBA_S1763 416961 6089339 2.1 1.4 0.8 Point Contact Unit Debris DBA_S1764 416968 6089190 11.0 7.0-1.9 Geological Area of Depressions DBA_S1765 415931 6090142 2.4 1.0 0.4 Geological Boulder DBA_S1766 416763 6090399 25.3 17.8-0.3 Geological Area of Depressions DBA_S1767 415969 6087235 5.7 3.3 0.4 Point Contact Unit Debris DBA_S1768 415710 6087077 2.0 0.9 0.7 Point Contact Unit Debris DBA_S1769 415481 6087152 2.2 1.4 0.7 Point Contact Unit Debris DBA_S1770 415442 6087237 4.3 1.4 0.4 Point Contact Unit Debris DBA_S1771 415234 6087313 3.7 2.1 0.4 Geological Boulder DBA_S1772 414079 6083660 4.4 3.3 0.3 Point Contact Unit Debris DBA_S1773 411700 6091248 2.2 1.4 0.5 Point Contact Unit Debris DBA_S1774 411371 6084287 1.7 1.2 0.6 Geological Boulder DBA_S1775 412344 6084485 1.2 0.5 0.7 Geological Isolated Rock <5% DBA_S1776 411722 6084517 3.5 0.6 0.6 Point Contact Unit Debris DBA_S1777 411779 6084615 67.0 49.1 0.6 Geological Boulder Cluster DBA_S1778 412126 6084595 1.3 0.8 0.7 Geological Isolated Rock <5% DBA_S1779 412091 6084611 4.1 1.0 0.6 Geological Boulder DBA_S1780 412318 6084625 90.6 67.3 0.6 Geological Boulder Cluster DBA_S1781 411328 6084648 1.5 0.5 0.9 Geological Isolated Rock <5% DBA_S1782 411211 6084797 8.4 1.4 1.4 Geological Boulder DBA_S1783 411451 6084924 3.3 1.8 0.7 Point Contact Unit Debris DBA_S1784 411366 6085005 4.8 1.0 1.1 Geological Boulder DBA_S1785 411430 6085110 2.4 1.1 0.6 Geological Boulder DBA_S1786 411225 6085266 2.4 2.1 0.9 Point Contact Unit Debris DBA_S1787 411587 6085282 1.6 1.0 0.6 Geological Isolated Rock <5% DBA_S1788 411633 6085217 3.3 1.9 0.8 Point Contact Unit Debris DBA_S1789 411679 6085276 138.6 103.8 0.7 Geological Boulder Cluster DBA_S1790 411837 6085156 0.6 0.2 0.5 Geological Isolated Rock <5% DBA_S1791 411882 6085211 1.6 0.5 0.8 Geological Isolated Rock <5% Page 15 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S1792 412093 6085233 2.0 1.0 1.1 Point Contact Unit Debris DBA_S1793 411457 6085482 5.2 2.0 0.9 Point Contact Unit Debris DBA_S1794 411494 6085516 2.8 1.0 0.7 Point Contact Unit Debris DBA_S1795 411427 6085561 2.8 2.1 0.9 Point Contact Unit Debris DBA_S1796 411493 6085617 5.9 1.6 0.7 Point Contact Unit Debris DBA_S1797 411224 6085543 3.7 3.2 0.6 Point Contact Unit Debris DBA_S1798 411143 6085563 1.8 0.9 0.6 Point Contact Unit Debris DBA_S1799 411051 6085745 1.4 0.5 0.6 Geological Isolated Rock <5% DBA_S1800 411068 6085790 107.7 72.7 1.0 Geological Boulder Cluster DBA_S1801 411307 6085830 50.5 36.6 0.8 Geological Boulder Cluster DBA_S1802 412131 6085525 1.7 1.0 0.6 Geological Boulder DBA_S1803 412077 6085651 8.2 1.5 0.6 Geological Boulder DBA_S1804 411357 6085951 4.4 2.0 0.4 Point Contact Unit Debris DBA_S1805 411778 6085833 1.9 1.0 0.4 Point Contact Unit Debris DBA_S1806 412029 6085865 1.3 0.6 0.4 Geological Isolated Rock <5% DBA_S1807 411909 6085925 7.8 1.2 1.0 Linear Contact Linear Debris DBA_S1808 412237 6086026 23.5 8.4 0.6 Geological Isolated Rock <5% DBA_S1809 412255 6086095 2.6 1.4 0.9 Point Contact Unit Debris DBA_S1810 412023 6086245 1.9 0.5 0.6 Geological Isolated Rock <5% DBA_S1811 411849 6086099 1.3 0.8 0.5 Geological Isolated Rock <5% DBA_S1812 411799 6086069 2.0 1.5 0.6 Point Contact Unit Debris DBA_S1813 411651 6086075 2.1 1.1 0.7 Point Contact Unit Debris DBA_S1814 411700 6086123 3.2 1.0 0.3 Geological Isolated Rock <5% DBA_S1815 411300 6086036 7.9 1.8 1.0 Geological Boulder DBA_S1816 411340 6086057 150.0 98.0 1.1 Geological Boulder Cluster DBA_S1817 411424 6086115 2.0 0.5 0.8 Geological Boulder DBA_S1818 411240 6086188 5.0 1.2 0.8 Point Contact Unit Debris DBA_S1819 411261 6086200 1.6 0.7 0.8 Geological Isolated Rock <5% DBA_S1820 411543 6086338 24.5 21.8 0.3 Geological Isolated Rock <5% DBA_S1821 411468 6086403 1.2 1.1 0.5 Point Contact Unit Debris DBA_S1822 411350 6086480 1.4 1.2 0.8 Point Contact Unit Debris DBA_S1823 413189 6085800 84.6 84.4 0.6 Geological Boulder Cluster DBA_S1824 413194 6085872 19.7 2.3-3.6 Geological Area of Depressions DBA_S1825 413321 6086088 1.7 0.8 0.6 Geological Boulder DBA_S1826 413296 6086232 77.4 76.6 0.5 Geological Boulder Cluster DBA_S1827 413682 6086551 139.8 96.2 0.5 Geological Boulder Cluster DBA_S1828 413606 6086617 3.6 2.9 0.5 Point Contact Unit Debris DBA_S1829 413587 6086630 1.6 0.7 0.4 Geological Isolated Rock <5% DBA_S1830 413615 6086657 1.9 0.7 0.5 Geological Isolated Rock <5% DBA_S1831 413313 6086653 2.0 1.4 1.2 Geological Boulder DBA_S1832 413087 6086639 5.8 1.0 0.7 Geological Isolated Rock <5% DBA_S1833 413461 6086864 3.2 1.2 0.5 Point Contact Unit Debris DBA_S1834 413453 6086922 2.3 2.1 1.1 Point Contact Unit Debris DBA_S1835 413385 6086867 0.9 0.9 0.7 Geological Boulder DBA_S1836 413166 6087316 2.6 0.9 0.3 Geological Boulder DBA_S1837 413228 6087392 1.9 0.9 0.6 Point Contact Unit Debris DBA_S1838 413362 6087519 2.4 1.7 0.4 Point Contact Unit Debris DBA_S1839 413192 6087732 26.2 24.6 0.6 Geological Isolated Rock <5% Page 16 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S1840 412856 6087438 4.0 1.8 1.1 Geological Boulder DBA_S1841 413083 6088011 2.5 0.9 0.6 Geological Boulder DBA_S1842 412981 6087934 1.9 0.8 0.6 Geological Boulder DBA_S1843 412952 6088224 1.2 0.3 0.7 Point Contact Unit Debris DBA_S1844 412814 6088203 1.4 0.5 0.7 Geological Isolated Rock <5% DBA_S1845 412707 6088385 2.9 1.4 0.6 Point Contact Unit Debris DBA_S1846 412777 6088029 1.6 1.2 0.5 Point Contact Unit Debris DBA_S1847 412430 6087684 3.1 1.4 1.0 Point Contact Unit Debris DBA_S1848 412422 6086788 1.8 0.7 0.7 Geological Boulder B20036 (18m) DBA_S1849 412055 6086816 3.4 0.9 0.7 Geological Isolated Rock <5% DBA_S1850 412024 6086775 2.5 0.6 0.5 Geological Isolated Rock <5% DBA_S1852 410963 6086476 3.8 1.9 0.6 Point Contact Unit Debris DBA_S1853 411629 6086660 1.6 0.8 0.6 Geological Boulder DBA_S1854 411748 6086705 4.4 1.3 1.0 Point Contact Unit Debris DBA_S1855 411883 6087104 163.3 94.7 1.0 Geological Boulder Cluster DBA_S1856 411862 6087047 1.6 1.4 0.9 Point Contact Unit Debris DBA_S1857 411901 6086993 2.8 1.4 0.6 Point Contact Unit Debris DBA_S1858 411898 6086975 3.1 2.3 0.7 Point Contact Unit Debris DBA_S1859 411724 6086904 2.7 1.1 1.6 Geological Boulder DBA_S1860 411301 6086755 2.0 1.9 1.1 Point Contact Unit Debris DBA_S1861 411324 6086762 2.6 2.6 0.7 Point Contact Unit Debris DBA_S1862 411166 6086717 1.4 0.6 0.4 Geological Isolated Rock <5% DBA_S1863 411160 6086733 3.0 0.8 0.6 Geological Isolated Rock <5% DBA_S1864 411070 6086770 3.8 1.5 0.6 Point Contact Unit Debris DBA_S1865 411127 6086805 2.7 1.6 1.3 Point Contact Unit Debris DBA_S1866 411233 6086892 3.4 2.1 1.8 Point Contact Unit Debris DBA_S1867 411154 6086966 5.0 1.4 1.2 Point Contact Unit Debris DBA_S1868 411043 6086952 2.9 1.2 1.3 Point Contact Unit Debris DBA_S1869 411468 6086930 2.3 1.6 0.7 Point Contact Unit Debris DBA_S1870 411407 6087034 0.8 0.2 0.8 Geological Isolated Rock <5% DBA_S1871 411415 6087095 2.7 1.6 1.1 Point Contact Unit Debris DBA_S1872 411542 6087203 2.6 2.5 0.7 Point Contact Unit Debris DBA_S1873 411348 6087278 3.4 1.4 0.6 Point Contact Unit Debris DBA_S1874 411280 6087254 3.7 2.0 0.5 Point Contact Unit Debris DBA_S1875 411143 6087254 4.6 1.7 1.3 Point Contact Unit Debris DBA_S1876 411157 6087383 2.8 1.3 1.0 Point Contact Unit Debris DBA_S1877 411135 6087416 4.4 1.6 0.6 Point Contact Unit Debris DBA_S1878 411142 6087418 3.2 2.0 1.2 Point Contact Unit Debris DBA_S1879 411805 6087294 4.7 1.4 0.8 Point Contact Unit Debris DBA_S1880 411692 6087437 2.0 0.8 1.2 Geological Isolated Rock <5% DBA_S1881 411232 6087673 46.3 26.4 0.4 Geological Boulder Cluster DBA_S1882 411424 6087622 2.0 1.3 1.1 Point Contact Unit Debris DBA_S1883 411415 6087617 2.3 0.5 0.9 Geological Isolated Rock <5% DBA_S1884 411796 6087675 1.8 1.6 0.8 Point Contact Unit Debris DBA_S1885 411684 6087742 9.1 6.3 0.5 Geological Isolated Rock <5% DBA_S1886 411726 6087952 4.7 1.5 0.5 Point Contact Unit Debris DBA_S1887 411572 6087870 2.4 0.9 0.7 Point Contact Unit Debris DBA_S1888 411516 6087959 92.0 82.0 0.6 Geological Boulder Cluster Page 17 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S1889 411508 6087945 3.8 2.3 0.9 Point Contact Unit Debris DBA_S1890 411375 6087956 6.4 2.3 1.1 Point Contact Unit Debris DBA_S1891 411369 6087965 45.6 31.9 1.2 Geological Boulder Cluster DBA_S1892 411362 6087970 5.2 1.8 0.6 Point Contact Unit Debris DBA_S1893 410945 6087751 1.5 1.2 0.4 Point Contact Unit Debris DBA_S1894 410953 6087806 2.8 2.4 0.7 Point Contact Unit Debris DBA_S1895 410815 6087912 5.1 1.1 0.6 Point Contact Unit Debris DBA_S1896 411348 6088141 1.8 1.1 0.4 Point Contact Unit Debris DBA_S1897 411409 6088265 3.6 1.1 0.6 Point Contact Unit Debris DBA_S1898 411130 6088176 4.6 1.6 0.7 Point Contact Unit Debris DBA_S1899 411096 6088253 2.1 0.7 1.0 Point Contact Unit Debris DBA_S1900 410980 6088297 1.8 1.5 0.8 Point Contact Unit Debris DBA_S1901 410873 6088296 2.7 1.7 0.6 Point Contact Unit Debris DBA_S1902 410901 6088481 3.3 1.5 0.7 Geological Boulder DBA_S1903 411039 6088452 4.7 2.5 0.8 Point Contact Unit Debris DBA_S1904 410951 6088544 1.6 1.2 0.5 Point Contact Unit Debris DBA_S1905 411248 6088505 2.3 0.6 0.8 Geological Isolated Rock <5% DBA_S1906 411429 6088536 4.5 1.2 0.9 Point Contact Unit Debris DBA_S1907 411379 6088553 35.5 33.0 0.5 Geological Isolated Rock <5% DBA_S1908 411292 6088588 2.0 1.8 1.3 Point Contact Unit Debris DBA_S1909 411042 6088641 2.0 1.0 0.9 Point Contact Unit Debris DBA_S1910 411072 6088744 4.3 1.2 0.7 Point Contact Unit Debris DBA_S1911 411360 6088748 1.4 1.4 1.0 Point Contact Unit Debris DBA_S1912 410234 6087511 1.7 0.6 0.4 Geological Isolated Rock <5% DBA_S1913 410328 6087960 1.5 1.2 0.6 Geological Boulder DBA_S1914 410216 6088135 1.8 0.8 0.9 Geological Isolated Rock <5% DBA_S1915 410122 6088213 2.6 1.2 1.3 Point Contact Unit Debris DBA_S1916 410059 6088222 3.0 1.5 0.5 Geological Isolated Rock <5% DBA_S1917 409893 6088685 6.9 1.5 0.6 Point Contact Unit Debris DBA_S1918 409969 6088728 2.9 1.6 0.5 Point Contact Unit Debris DBA_S1919 410786 6088790 2.1 1.0 0.6 Point Contact Unit Debris DBA_S1920 410010 6088891 2.0 0.3 0.5 Point Contact Unit Debris DBA_S1921 411629 6088658 1.7 0.8 0.7 Point Contact Unit Debris DBA_S1922 411076 6088770 4.5 1.4 0.9 Point Contact Unit Debris DBA_S1923 410963 6088809 23.9 15.9 0.6 Geological Isolated Rock <5% DBA_S1924 411020 6088854 2.3 2.0 1.5 Point Contact Unit Debris DBA_S1925 411171 6088910 5.2 1.0 1.4 Point Contact Unit Debris DBA_S1926 411160 6088968 19.9 7.7 0.3 Geological Isolated Rock <5% DBA_S1927 411549 6088962 1.4 0.6 0.6 Geological Isolated Rock <5% DBA_S1928 411338 6089071 2.0 1.5 0.9 Geological Boulder DBA_S1929 411442 6089126 7.9 2.3 1.5 Point Contact Unit Debris DBA_S1930 410754 6088922 3.4 2.0 0.4 Point Contact Unit Debris DBA_S1931 410985 6089096 2.3 1.1 0.7 Point Contact Unit Debris DBA_S1932 411150 6089325 5.7 1.6 0.8 Point Contact Unit Debris DBA_S1933 410327 6089077 3.8 2.3 0.7 Point Contact Unit Debris DBA_S1934 410712 6089249 3.6 2.5 0.5 Point Contact Unit Debris DBA_S1935 410816 6089342 3.9 1.2 0.5 Point Contact Unit Debris DBA_S1936 410888 6089391 2.0 1.7 0.6 Point Contact Unit Debris Page 18 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S1937 410791 6089391 3.7 1.1 0.6 Point Contact Unit Debris DBA_S1938 410747 6089477 2.3 1.6 0.9 Point Contact Unit Debris DBA_S1939 410775 6089504 1.2 0.6 1.1 Geological Isolated Rock <5% DBA_S1940 410624 6089682 8.6 1.9 1.2 Point Contact Unit Debris DBA_S1941 410828 6089750 0.7 0.5 0.4 Geological Isolated Rock <5% DBA_S1942 410819 6089752 1.6 0.5 0.4 Geological Isolated Rock <5% DBA_S1943 410460 6089756 2.5 0.8 1.3 Geological Boulder DBA_S1944 409743 6089074 2.4 0.9 0.4 Point Contact Unit Debris DBA_S1945 409630 6089134 74.4 56.5 0.4 Geological Boulder Cluster DBA_S1946 409581 6089290 1.6 1.4 0.6 Point Contact Unit Debris DBA_S1947 409429 6089598 1.3 1.1 0.7 Point Contact Unit Debris DBA_S1948 410075 6089498 3.8 1.8 0.6 Point Contact Unit Debris DBA_S1949 410186 6089608 2.8 1.8 0.6 Geological Boulder DBA_S1950 410259 6089776 2.5 1.7 1.1 Geological Boulder DBA_S1951 410277 6089835 2.8 1.4 0.6 Geological Boulder DBA_S1952 410906 6089888 4.8 1.6 0.7 Point Contact Unit Debris DBA_S1954 410431 6089967 3.3 1.8 0.8 Point Contact Unit Debris DBA_S1955 410415 6089953 1.0 0.7 0.8 Geological Isolated Rock <5% DBA_S1956 410393 6089981 1.7 1.6 0.4 Point Contact Unit Debris DBA_S1957 410303 6090159 8.5 0.8 0.7 Linear Contact Linear Debris DBA_S1958 410696 6090345 2.0 1.6 0.6 Point Contact Unit Debris DBA_S1959 410768 6090922 4.0 1.0 0.3 Point Contact Unit Debris DBA_S1960 410564 6091437 2.4 0.5 0.5 Geological Boulder DBA_S1961 410519 6091339 1.2 1.0 0.5 Geological Boulder DBA_S1962 410416 6091179 2.1 1.6 0.9 Point Contact Unit Debris DBA_S1963 410403 6091156 2.8 1.1 0.7 Point Contact Unit Debris DBA_S1964 410285 6091038 2.0 0.5 0.5 Geological Isolated Rock <5% DBA_S1965 410248 6090999 1.4 1.3 0.8 Point Contact Unit Debris DBA_S1966 409992 6090754 3.3 1.4 0.6 Point Contact Unit Debris DBA_S1967 409900 6090331 2.4 1.4 0.8 Point Contact Unit Debris DBA_S1968 409712 6090332 7.2 1.0 0.2 Geological Boulder DBA_S1969 409579 6090257 1.0 0.7 0.7 Geological Boulder DBA_S1970 409798 6090627 1.6 1.2 0.8 Geological Boulder DBA_S1971 409764 6090590 19.0 12.3 0.4 Geological Boulder Cluster DBA_S1972 409663 6090619 2.1 1.5 1.1 Point Contact Unit Debris DBA_S1973 409512 6090637 1.7 1.6 0.8 Point Contact Unit Debris DBA_S1974 409431 6090546 2.8 1.6 0.9 Point Contact Unit Debris DBA_S1975 409549 6090868 2.8 1.7 0.6 Geological Boulder DBA_S1976 409512 6090866 2.4 1.3 0.7 Point Contact Unit Debris DBA_S1977 409391 6091066 2.2 0.5 0.3 Point Contact Unit Debris DBA_S1978 409313 6090372 12.5 7.7 0.3 Point Contact Unit Debris DBA_S1979 409266 6090396 1.6 1.5 0.5 Point Contact Unit Debris DBA_S1980 409245 6090393 82.2 62.3 0.7 Geological Boulder Cluster DBA_S1981 409251 6090413 2.1 1.1 0.8 Point Contact Unit Debris DBA_S1982 409167 6090599 1.3 1.2 1.2 Point Contact Unit Debris DBA_S1983 409173 6090745 4.8 1.6 0.4 Point Contact Unit Debris DBA_S1984 408966 6090658 2.8 0.8 0.4 Point Contact Unit Debris DBA_S1985 408870 6090899 20.3 13.2 0.5 Geological Isolated Rock <5% Page 19 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S1986 408867 6090912 36.1 18.2 0.6 Geological Isolated Rock <5% DBA_S1987 408166 6090747 2.5 1.0 0.5 Point Contact Unit Debris DBA_S1988 408195 6090764 0.8 0.6 0.7 Geological Boulder B20047 (11m) DBA_S1989 408242 6090874 115.3 80.9 0.7 Geological Boulder Cluster DBA_S1990 408288 6090871 71.3 48.0 0.6 Geological Boulder Cluster DBA_S1991 408179 6091015 69.1 54.3 0.9 Geological Boulder Cluster DBA_S1992 408277 6090994 4.2 1.5 0.5 Point Contact Unit Debris DBA_S1993 408517 6091033 2.1 2.0 0.9 Point Contact Unit Debris DBA_S1994 408719 6091055 129.0 86.6 0.6 Geological Boulder Cluster DBA_S1995 408424 6091269 2.1 0.8 0.5 Geological Boulder DBA_S1996 409056 6091156 1.7 0.7 0.6 Point Contact Unit Debris DBA_S1997 409082 6091171 1.1 1.0 0.5 Point Contact Unit Debris DBA_S1998 409101 6091193 1.8 0.6 0.4 Point Contact Unit Debris DBA_S1999 408923 6091294 1.9 0.8 1.0 Geological Boulder DBA_S2000 408604 6091294 2.8 2.1 0.2 Point Contact Unit Debris DBA_S2001 408580 6091369 2.1 1.2 0.6 Point Contact Unit Debris DBA_S2002 409031 6091387 1.6 1.5 0.7 Point Contact Unit Debris DBA_S2003 408953 6091461 3.2 0.9 0.6 Geological Boulder DBA_S2004 409051 6091469 4.3 2.1 0.6 Point Contact Unit Debris DBA_S2005 409046 6091498 2.2 1.0 0.5 Point Contact Unit Debris DBA_S2006 408202 6091473 4.5 1.8 0.6 Point Contact Unit Debris DBA_S2007 408297 6091542 96.7 71.0 0.6 Geological Boulder Cluster DBA_S2008 408599 6091551 5.3 0.9 0.5 Linear Contact Linear Debris DBA_S2009 408546 6091637 49.8 24.5 0.5 Geological Boulder Cluster DBA_S2010 408594 6091711 1.2 1.0 0.6 Geological Boulder DBA_S2011 408775 6091655 99.5 49.6 0.4 Geological Boulder Cluster DBA_S2012 408958 6091677 247.8 185.6 0.9 Geological Boulder Cluster DBA_S2013 408989 6091763 2.1 1.7 0.9 Point Contact Unit Debris DBA_S2014 408682 6091774 1.6 1.2 0.7 Point Contact Unit Debris DBA_S2015 408706 6091789 35.8 22.0 0.6 Geological Boulder Cluster DBA_S2016 408762 6091835 3.2 2.1 0.8 Point Contact Unit Debris DBA_S2017 407973 6090405 2.6 1.3 0.8 Geological Boulder DBA_S2018 408029 6090454 1.6 1.3 1.1 Point Contact Unit Debris DBA_S2019 408022 6090581 3.2 0.7 0.5 Point Contact Unit Debris DBA_S2020 407858 6090688 192.2 179.0 0.9 Geological Boulder Cluster DBA_S2021 408017 6090763 2.1 1.0 0.5 Point Contact Unit Debris DBA_S2022 407823 6090913 4.3 1.9 0.8 Point Contact Unit Debris DBA_S2023 407769 6090922 3.1 0.9 0.7 Point Contact Unit Debris DBA_S2024 407692 6090987 19.4 18.6 0.6 Geological Boulder Cluster DBA_S2025 407812 6091077 1.9 1.6 0.7 Point Contact Unit Debris DBA_S2026 407825 6091079 64.5 50.6 0.6 Geological Boulder Cluster DBA_S2027 407981 6091086 1.7 1.1 0.8 Point Contact Unit Debris DBA_S2028 407993 6091097 5.1 1.5 0.9 Geological Boulder DBA_S2029 408011 6091055 4.6 1.7 0.4 Geological Boulder DBA_S2030 408044 6091032 7.2 1.6 1.0 Point Contact Unit Debris DBA_S2031 407225 6090957 1.7 1.2 0.5 Point Contact Unit Debris DBA_S2032 410131 6092476 3.8 1.2 0.7 Point Contact Unit Debris DBA_S2033 408938 6092008 1.5 1.1 0.4 Point Contact Unit Debris Page 20 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S2034 408943 6092017 2.7 2.2 0.7 Point Contact Unit Debris DBA_S2035 409108 6092126 1.6 1.3 0.7 Point Contact Unit Debris DBA_S2036 409392 6092152 1.4 0.8 0.3 Geological Boulder DBA_S2037 408833 6092304 45.7 42.7 0.5 Geological Boulder Cluster DBA_S2038 409074 6092409 44.3 30.3 0.8 Geological Boulder Cluster DBA_S2039 408877 6092486 2.7 1.4 0.8 Point Contact Unit Debris DBA_S2040 408765 6092772 3.1 0.9 0.9 Point Contact Unit Debris DBA_S2041 407660 6091321 1.6 1.1 0.6 Point Contact Unit Debris DBA_S2042 406871 6091940 1.7 1.5 1.0 Geological Boulder B20053 (36m) DBA_S2043 407494 6091754 1.8 1.2 1.4 Point Contact Unit Debris DBA_S2044 407302 6092091 1.9 1.6 0.9 Point Contact Unit Debris DBA_S2045 407297 6092088 1.6 1.2 0.7 Point Contact Unit Debris DBA_S2046 407262 6092033 1.5 1.4 0.9 Point Contact Unit Debris DBA_S2047 407545 6091941 2.2 1.9 0.9 Point Contact Unit Debris DBA_S2048 408215 6091888 2.0 0.7 0.5 Geological Boulder DBA_S2049 408170 6091925 2.4 1.3 1.2 Point Contact Unit Debris DBA_S2050 408171 6091943 1.0 0.8 0.6 Geological Boulder DBA_S2051 408591 6091872 1.4 1.4 0.4 Point Contact Unit Debris DBA_S2052 408391 6092067 0.8 0.5 0.4 Geological Boulder DBA_S2053 408171 6092358 12.6 12.2 0.7 Geological Boulder Cluster DBA_S2054 408175 6092371 4.2 2.5 1.1 Point Contact Unit Debris DBA_S2055 408216 6092374 1.9 1.0 0.8 Point Contact Unit Debris DBA_S2056 408615 6093420 2.5 1.7 0.8 Point Contact Unit Debris DBA_S2057 408672 6093380 1.8 1.1 0.6 Point Contact Unit Debris DBA_S2058 408713 6093289 3.0 0.8 0.6 Geological Boulder DBA_S2059 408648 6093241 17.7 12.1 0.8 Geological Boulder Cluster DBA_S2060 408545 6093242 5.7 2.2 0.7 Geological Boulder DBA_S2061 407724 6092894 1.7 0.9 0.7 Point Contact Unit Debris DBA_S2062 407643 6093628 5.8 2.0 0.6 Point Contact Unit Debris DBA_S2063 409134 6097206 1.4 0.5 0.4 Geological Boulder B20068 (15m) DBA_S2064 408746 6095881 3.0 1.6 0.6 Point Contact Unit Debris DBA_S2065 408751 6095735 2.2 1.9 0.4 Point Contact Unit Debris DBA_S2066 408867 6094588 1.5 1.1 0.5 Point Contact Unit Debris DBA_S2067 408546 6094305 1.9 1.8 0.7 Point Contact Unit Debris DBA_S2068 407545 6094123 2.8 1.4 0.7 Point Contact Unit Debris DBA_S2069 408119 6088510 1.8 1.8 0.9 Point Contact Unit Debris DBA_S2070 408601 6089103 2.9 1.3 0.9 Point Contact Unit Debris DBA_S2071 408801 6088563 5.9 5.4-0.5 Geological Depression DBA_S2072 407670 6081677 3.1 1.6 0.7 Point Contact Unit Debris DBA_S2073 406879 6082341 2.6 1.2 0.4 Point Contact Unit Debris DBA_S2074 406886 6083173 3.4 1.6 0.8 Geological Boulder DBA_S2075 408060 6084079 0.5 0.3 0.4 Geological Boulder DBA_S2076 408044 6084491 1.3 1.1 0.5 Point Contact Unit Debris DBA_S2077 408022 6084468 1.4 1.3 0.6 Point Contact Unit Debris DBA_S2078 408200 6084526 1.6 1.1 1.0 Point Contact Unit Debris DBA_S2079 408196 6084517 2.0 0.5 0.4 Point Contact Unit Debris DBA_S2080 408313 6084866 3.2 1.1 0.7 Point Contact Unit Debris DBA_S2081 408257 6085118 4.6 1.9 0.9 Point Contact Unit Debris Page 21 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S2082 408140 6085113 2.2 1.0 0.7 Geological Boulder DBA_S2083 408055 6085194 135.7 90.3 0.7 Geological Boulder Cluster DBA_S2084 408187 6085288 52.0 52.0 0.3 Geological Boulder Cluster DBA_S2085 406623 6084525 0.9 0.5 0.9 Geological Boulder DBA_S2086 406637 6084622 0.2 0.1 0.4 Geological Boulder DBA_S2087 406402 6084862 2.7 1.0 1.1 Geological Isolated Rock <5% DBA_S2088 406924 6084923 1.7 0.5 1.1 Geological Boulder B20034 (3m) DBA_S2089 407198 6084968 2.2 1.0 0.5 Geological Isolated Rock <5% DBA_S2091 407712 6085430 1.1 0.6 0.5 Geological Isolated Rock <5% DBA_S2092 407835 6085522 3.2 1.7 0.8 Point Contact Unit Debris DBA_S2093 407854 6085530 2.6 0.5 0.7 Geological Isolated Rock <5% DBA_S2094 407760 6085568 1.5 0.8 0.4 Geological Boulder DBA_S2095 406544 6085540 1.6 0.8 0.5 Geological Isolated Rock <5% DBA_S2096 406672 6085672 4.1 2.1 1.3 Point Contact Unit Debris DBA_S2097 406677 6085686 1.1 1.0 0.4 Point Contact Unit Debris DBA_S2098 405980 6085876 1.1 0.8 0.3 Geological Boulder DBA_S2099 406110 6085883 1.5 0.6 0.4 Geological Boulder DBA_S2100 406072 6085953 4.0 1.4 0.4 Point Contact Unit Debris DBA_S2101 406148 6086034 9.5 1.7 0.9 Point Contact Unit Debris DBA_S2102 406483 6085813 2.2 1.0 0.5 Point Contact Unit Debris DBA_S2103 406589 6085940 0.8 0.4 0.4 Geological Boulder DBA_S2104 406585 6086008 3.4 2.7 0.6 Geological Isolated Rock <5% DBA_S2105 406732 6086000 1.1 1.0 0.5 Point Contact Unit Debris DBA_S2106 406866 6086018 72.8 12.7 0.5 Geological Isolated Rock <5% DBA_S2107 406892 6086166 4.1 1.5 0.7 Point Contact Unit Debris DBA_S2108 406892 6086230 2.9 1.9 0.9 Point Contact Unit Debris DBA_S2109 406993 6085750 2.4 1.0 0.4 Point Contact Unit Debris DBA_S2110 407368 6085530 3.6 1.1 0.6 Point Contact Unit Debris DBA_S2111 407548 6085668 6.7 1.5 0.7 Point Contact Unit Debris DBA_S2112 407308 6086098 2.5 1.6 0.8 Point Contact Unit Debris DBA_S2113 407310 6086116 2.2 1.6 0.7 Point Contact Unit Debris DBA_S2114 407445 6086117 2.0 0.8 0.6 Geological Isolated Rock <5% DBA_S2115 407468 6086169 2.3 1.8 1.0 Point Contact Unit Debris DBA_S2116 407450 6086208 1.5 1.3 0.4 Point Contact Unit Debris DBA_S2117 407517 6086242 1.7 1.6 1.1 Point Contact Unit Debris DBA_S2118 407545 6086321 1.6 1.2 0.3 Point Contact Unit Debris DBA_S2119 407442 6086385 2.5 2.1 0.9 Point Contact Unit Debris DBA_S2120 407479 6086416 19.8 3.9 0.9 Geological Isolated Rock <5% DBA_S2121 407351 6086531 53.0 38.0 0.7 Geological Isolated Rock <5% DBA_S2122 406304 6086561 4.1 1.7 0.7 Geological Boulder DBA_S2123 406017 6086474 5.8 1.8 0.3 Geological Boulder DBA_S2124 405759 6086436 2.1 0.9 0.7 Point Contact Unit Debris DBA_S2125 405922 6086576 1.3 1.0 0.8 Point Contact Unit Debris DBA_S2126 406053 6086574 1.7 1.7 0.6 Point Contact Unit Debris DBA_S2127 407629 6085846 2.9 1.2 0.7 Point Contact Unit Debris DBA_S2128 407737 6085952 4.4 1.6 0.8 Point Contact Unit Debris DBA_S2129 407951 6085924 6.8 0.8 0.5 Geological Boulder DBA_S2130 407787 6086008 1.3 0.5 0.7 Geological Isolated Rock <5% Page 22 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S2131 407694 6086070 3.0 1.6 0.7 Point Contact Unit Debris DBA_S2132 407712 6086076 40.7 14.2 0.5 Geological Boulder Cluster DBA_S2133 407312 6086638 37.8 31.3 1.0 Geological Isolated Rock <5% DBA_S2134 407351 6086716 2.0 1.4 2.0 Point Contact Unit Debris DBA_S2135 407252 6086724 2.1 1.6 0.8 Point Contact Unit Debris DBA_S2136 407264 6086747 71.0 65.5 0.7 Geological Boulder Cluster DBA_S2137 407372 6086853 35.2 21.1 0.7 Geological Boulder Cluster DBA_S2138 407238 6086898 173.3 95.3 0.6 Geological Boulder Cluster DBA_S2139 407161 6086820 1.3 1.1 0.9 Point Contact Unit Debris DBA_S2140 407065 6086818 1.8 0.8 0.3 Geological Isolated Rock <5% DBA_S2141 407020 6086689 2.4 0.5 0.7 Geological Boulder DBA_S2142 406648 6086706 2.5 2.1 1.2 Geological Boulder DBA_S2143 406664 6086742 2.2 1.3 0.7 Point Contact Unit Debris DBA_S2144 407457 6086668 2.9 1.0 0.8 Point Contact Unit Debris DBA_S2145 405716 6085911 2.2 1.0 0.5 Point Contact Unit Debris DBA_S2146 405139 6086568 1.8 1.3 0.6 Geological Boulder DBA_S2147 404793 6086838 1.0 0.9 1.2 Point Contact Unit Debris DBA_S2148 405667 6086961 4.0 1.4 2.0 Geological Boulder DBA_S2149 405628 6087029 2.2 1.2 2.9 Point Contact Unit Debris Possible Debris from Small Wreck DBA_S2150 405610 6087025 3.3 1.3 1.3 Geological Boulder DBA_S2151 405610 6087015 6.0 1.5 1.0 Geological Boulder DBA_S2152 405621 6087043 9.4 1.5 0.5 Cluster Contact Unit and Linear Debris Cluster of various objects DBA_M6244 (45m) DBA_S2153 405596 6087113 1.5 0.8 0.6 Geological Isolated Rock <5% DBA_S2154 405264 6087093 2.0 0.5 0.4 Point Contact Unit Debris DBA_S2155 405468 6087317 2.6 1.9 0.5 Point Contact Unit Debris DBA_S2156 405807 6087164 185.6 187.3 1.6 Geological Boulder Cluster DBA_S2157 405954 6087337 6.6 1.0 1.1 Geological Boulder DBA_S2158 406084 6087240 38.9 32.8 0.5 Geological Boulder Cluster DBA_S2159 406253 6087145 75.3 48.9 0.6 Geological Boulder Cluster DBA_S2160 406291 6087493 3.2 2.1 0.6 Point Contact Unit Debris DBA_S2161 405029 6087151 0.9 0.8 0.9 Point Contact Unit Debris DBA_S2162 404899 6087175 2.0 0.8 0.8 Geological Isolated Rock <5% DBA_S2163 404970 6087234 1.5 1.0 0.6 Geological Isolated Rock <5% DBA_S2164 404825 6087387 4.3 2.0 0.9 Point Contact Unit Debris DBA_S2165 404906 6087367 13.1 2.2 0.7 Linear Contact Linear Debris DBA_S2166 404835 6087458 1.9 1.3 2.1 Point Contact Unit Debris DBA_S2167 404897 6087472 2.5 1.0 0.8 Geological Isolated Rock <5% DBA_S2168 404961 6087394 1.7 1.2 0.5 Point Contact Unit Debris DBA_S2169 405036 6087357 1.8 1.2 0.5 Geological Isolated Rock <5% DBA_S2170 405078 6087384 0.7 0.6 0.9 Geological Boulder DBA_S2171 405150 6087368 2.6 2.1 0.9 Point Contact Unit Debris DBA_S2172 405146 6087402 0.4 0.1 0.5 Geological Boulder DBA_S2173 405196 6087407 5.9 1.7 0.5 Point Contact Unit Debris DBA_S2174 405303 6087453 4.4 3.0 0.5 Point Contact Unit Debris DBA_S2175 405469 6087541 2.1 0.7 0.7 Geological Isolated Rock <5% DBA_S2176 405526 6087635 2.9 0.9 0.7 Point Contact Unit Debris DBA_S2177 405023 6087428 4.8 0.5 0.8 Point Contact Unit Debris DBA_S2178 405065 6087446 0.6 0.2 0.7 Geological Boulder Page 23 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S2179 405020 6087506 0.8 0.6 0.3 Geological Boulder DBA_S2180 405152 6087544 7.5 2.8 1.4 Geological Boulder DBA_S2181 404979 6087550 0.9 0.4 0.4 Geological Boulder DBA_S2182 404986 6087610 113.0 49.0 0.8 Geological Isolated Rock <5% DBA_S2183 404962 6087618 3.7 1.8 1.3 Point Contact Unit Debris DBA_S2184 404740 6087663 102.4 67.3 0.7 Geological Boulder Cluster DBA_S2185 404800 6087737 1.8 0.5 0.6 Geological Boulder DBA_S2186 405129 6087902 1.6 1.0 0.7 Point Contact Unit Debris DBA_S2187 405765 6087531 1.4 1.0 1.1 Geological Isolated Rock <5% DBA_S2188 405845 6087600 54.4 49.9 0.5 Geological Isolated Rock <5% DBA_S2189 405849 6087609 2.5 1.1 0.7 Point Contact Unit Debris DBA_S2190 405894 6087647 3.7 1.1 1.2 Geological Boulder DBA_S2191 405814 6087764 2.3 0.7 0.6 Geological Isolated Rock <5% DBA_S2192 405643 6087741 2.6 1.9 0.9 Point Contact Unit Debris DBA_S2193 405693 6087775 1.9 0.8 0.9 Point Contact Unit Debris DBA_S2194 405703 6087773 2.3 1.9 1.2 Point Contact Unit Debris DBA_S2195 405661 6087851 5.3 1.1 1.4 Point Contact Unit Debris DBA_S2196 405721 6087843 4.3 1.5 1.0 Point Contact Unit Debris DBA_S2197 405765 6087911 9.9 1.7 0.7 Linear Contact Linear Debris DBA_S2198 405808 6087903 1.8 1.0 0.6 Point Contact Unit Debris DBA_S2199 405814 6087895 2.8 1.4 0.8 Point Contact Unit Debris DBA_S2200 405876 6088022 4.5 4.3 1.0 Point Contact Unit Debris DBA_S2201 405978 6088088 4.3 1.5 0.5 Point Contact Unit Debris DBA_S2202 406435 6087789 5.3 1.0 0.6 Geological Boulder DBA_S2203 406833 6087843 1.4 1.2 0.6 Point Contact Unit Debris DBA_S2204 406372 6087985 2.5 1.1 0.9 Point Contact Unit Debris DBA_S2205 406469 6087979 6.7 1.5 0.6 Point Contact Unit Debris DBA_S2206 406878 6088013 1.6 0.5 0.5 Point Contact Unit Debris DBA_S2207 406876 6088043 1.1 0.6 0.3 Point Contact Unit Debris DBA_S2208 406876 6088077 2.5 0.5 0.6 Point Contact Unit Debris DBA_S2209 406717 6088263 1.7 1.0 0.5 Point Contact Unit Debris DBA_S2210 404579 6087806 1.3 0.8 0.3 Geological Boulder DBA_S2211 404711 6088112 2.7 1.3 0.8 Point Contact Unit Debris DBA_S2212 404961 6088030 1.6 1.3 0.9 Geological Boulder DBA_S2213 404856 6088171 2.4 1.1 0.7 Point Contact Unit Debris DBA_S2214 405119 6088165 105.0 89.7 0.6 Geological Boulder Cluster DBA_S2215 405496 6088210 4.5 1.1 0.6 Point Contact Unit Debris DBA_S2216 405408 6088275 3.7 1.0 1.2 Geological Boulder DBA_S2217 405355 6088374 1.4 0.8 0.6 Geological Boulder DBA_S2218 405210 6088396 90.6 85.1 0.5 Geological Boulder Cluster DBA_S2219 405037 6088398 2.0 1.0 0.8 Geological Boulder DBA_S2220 405970 6088237 1.5 0.8 0.9 Geological Isolated Rock <5% DBA_S2221 405767 6088236 5.6 1.6 0.6 Point Contact Unit Debris DBA_S2222 405969 6088273 3.9 1.2 1.1 Point Contact Unit Debris DBA_S2223 405978 6088284 3.0 1.1 0.9 Geological Isolated Rock <5% DBA_S2224 405951 6088281 2.5 1.7 0.7 Point Contact Unit Debris DBA_S2225 405872 6088279 2.4 1.1 1.3 Geological Isolated Rock <5% DBA_S2226 405831 6088280 23.2 9.0 0.9 Geological Isolated Rock <5% Page 24 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S2227 405823 6088301 7.6 1.1 0.9 Linear Contact Linear Debris DBA_S2228 405936 6088321 4.9 2.4 0.7 Point Contact Unit Debris DBA_S2229 405986 6088344 3.1 1.0 0.6 Point Contact Unit Debris DBA_S2230 405811 6088482 2.8 1.9 0.6 Point Contact Unit Debris DBA_S2231 405780 6088503 2.4 1.8 0.6 Point Contact Unit Debris DBA_S2232 405470 6088519 1.3 1.3 0.6 Geological Boulder DBA_S2233 405546 6088534 2.5 1.8 0.2 Point Contact Unit Debris DBA_S2234 405635 6088772 4.0 1.3 0.5 Geological Boulder DBA_S2235 404881 6089035 1.9 1.9 0.9 Point Contact Unit Debris DBA_S2236 406131 6088935 146.1 98.4 0.4 Geological Boulder Cluster DBA_S2237 406375 6088110 2.6 0.6 0.9 Geological Isolated Rock <5% DBA_S2238 406312 6088240 1.5 1.4 0.8 Point Contact Unit Debris DBA_S2239 406371 6088275 2.9 1.9 0.7 Point Contact Unit Debris DBA_S2240 406245 6088579 2.5 1.7 0.8 Point Contact Unit Debris DBA_S2241 406371 6088598 1.6 1.1 0.6 Point Contact Unit Debris DBA_S2242 406215 6088680 6.5 1.0 0.9 Linear Contact Linear Debris DBA_S2243 406345 6088737 8.8 1.7 0.9 Point Contact Unit Debris DBA_S2244 406368 6088825 8.1 1.7 1.2 Point Contact Unit Debris DBA_S2245 406743 6088759 5.2 1.8 1.0 Point Contact Unit Debris DBA_S2246 406672 6088898 1.4 0.9 1.4 Geological Boulder DBA_S2247 406629 6089033 1.5 1.0 0.5 Geological Isolated Rock <5% DBA_S2248 406375 6088969 3.1 1.6 0.6 Point Contact Unit Debris DBA_S2249 406248 6089036 131.2 105.4 0.4 Geological Boulder Cluster DBA_S2250 406164 6089118 3.3 1.4 0.3 Point Contact Unit Debris DBA_S2251 406155 6089151 102.2 74.4 0.5 Geological Boulder Cluster DBA_S2252 406106 6089180 2.4 0.8 0.5 Geological Boulder DBA_S2253 406248 6089259 27.3 19.9 0.4 Geological Boulder Cluster DBA_S2254 406430 6089232 95.9 90.3 1.0 Geological Boulder Cluster DBA_S2255 406530 6089324 95.2 85.6 1.3 Geological Boulder Cluster DBA_S2256 406540 6089324 4.5 1.1 0.7 Point Contact Unit Debris DBA_S2257 406502 6089343 4.9 1.2 0.5 Point Contact Unit Debris DBA_S2258 406535 6089352 1.9 0.9 0.6 Geological Boulder DBA_S2259 406092 6089516 2.1 0.8 0.8 Geological Boulder DBA_S2260 406148 6089508 4.0 1.1 0.4 Geological Boulder DBA_S2261 406320 6089541 5.6 2.1 0.7 Point Contact Unit Debris DBA_S2262 406342 6089559 2.2 1.1 1.3 Geological Boulder DBA_S2263 406265 6089838 5.6 0.8 0.8 Geological Boulder DBA_S2264 406152 6089926 2.5 1.8 0.4 Point Contact Unit Debris DBA_S2265 406114 6089943 94.3 73.5 0.6 Geological Boulder Cluster DBA_S2266 406091 6089945 63.5 61.4 0.6 Geological Boulder Cluster DBA_S2267 405935 6089912 3.5 1.4 0.6 Point Contact Unit Debris DBA_S2268 405780 6090120 2.5 2.0 0.5 Point Contact Unit Debris DBA_S2269 406072 6090162 10.9 10.4 1.1 Geological Boulder Cluster DBA_S2270 406135 6090221 2.4 1.6 0.7 Point Contact Unit Debris DBA_S2271 406119 6090232 90.0 88.9 1.0 Geological Boulder Cluster DBA_S2272 405865 6090192 1.7 1.0 0.9 Point Contact Unit Debris DBA_S2273 405836 6090239 0.9 0.8 0.6 Geological Boulder DBA_S2274 405963 6090250 2.2 1.0 0.7 Point Contact Unit Debris Page 25 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S2275 405950 6090260 2.8 1.8 0.6 Point Contact Unit Debris DBA_S2276 405912 6090314 4.7 0.7 0.4 Geological Boulder DBA_S2277 406055 6090378 2.4 1.6 0.7 Point Contact Unit Debris DBA_S2278 405868 6090380 2.3 1.0 0.5 Point Contact Unit Debris DBA_S2279 405624 6090526 3.4 3.0 0.5 Point Contact Unit Debris DBA_S2280 405836 6090476 47.5 42.4 0.8 Geological Boulder Cluster DBA_S2281 406032 6090496 2.6 1.1 1.2 Point Contact Unit Debris DBA_S2282 405922 6090513 50.9 13.0 0.6 Geological Boulder Cluster DBA_S2283 405998 6090566 5.5 1.3 0.6 Geological Boulder DBA_S2284 405792 6090613 58.6 55.1 0.6 Geological Boulder Cluster DBA_S2285 405694 6090611 2.8 1.7 0.8 Geological Boulder DBA_S2286 406021 6090645 91.2 81.3 0.9 Geological Boulder Cluster DBA_S2287 405867 6090649 93.2 91.2 0.9 Geological Boulder Cluster DBA_S2288 405840 6090681 1.7 1.0 0.4 Geological Boulder DBA_S2289 405597 6090645 2.1 1.7 0.6 Point Contact Unit Debris DBA_S2290 405612 6090675 129.3 84.7 0.4 Geological Boulder Cluster DBA_S2291 405758 6090732 158.1 43.7 0.4 Geological Boulder Cluster DBA_S2292 405789 6090827 3.2 2.3 1.0 Geological Boulder DBA_S2293 405813 6090858 1.3 1.1 0.8 Point Contact Unit Debris DBA_S2294 405770 6090908 243.9 178.6 0.9 Geological Boulder Cluster DBA_S2295 405625 6090887 90.5 49.7 0.4 Geological Boulder Cluster DBA_S2296 405599 6090933 2.3 1.0 0.6 Point Contact Unit Debris DBA_S2297 405296 6090996 4.9 1.7 0.9 Point Contact Unit Debris DBA_S2298 405571 6090969 96.0 74.8 0.5 Geological Boulder Cluster DBA_S2299 405829 6090948 5.6 1.2 0.6 Point Contact Unit Debris DBA_S2300 405889 6090938 2.9 1.4 0.7 Point Contact Unit Debris DBA_S2301 405813 6090993 2.8 1.0 0.7 Point Contact Unit Debris DBA_S2302 405981 6091009 7.7 3.0 1.5 Geological Boulder DBA_S2303 405971 6091037 3.6 1.6 1.1 Point Contact Unit Debris DBA_S2304 405559 6091036 2.1 1.2 0.8 Point Contact Unit Debris DBA_S2305 405630 6091086 2.4 2.2 0.6 Point Contact Unit Debris DBA_S2306 405602 6091154 2.6 1.0 0.6 Geological Boulder DBA_S2307 405669 6091158 2.8 1.7 1.8 Point Contact Unit Debris DBA_S2308 405681 6091168 5.0 0.5 0.9 Linear Contact Linear Debris DBA_S2309 405751 6091132 5.0 2.4 0.6 Point Contact Unit Debris DBA_S2310 405824 6091120 35.4 11.4 0.7 Geological Boulder Cluster DBA_S2311 405827 6091195 1.9 1.8 0.4 Point Contact Unit Debris DBA_S2312 405532 6091237 5.6 4.5 0.5 Point Contact Unit Debris DBA_S2313 405281 6091333 3.8 1.4 1.2 Point Contact Unit Debris DBA_S2314 405731 6091339 1.5 1.2 0.7 Point Contact Unit Debris DBA_S2315 405787 6091197 3.0 1.0 0.4 Point Contact Unit Debris DBA_S2316 406355 6091208 1.6 1.1 0.8 Geological Boulder B20051 (5m) DBA_S2317 405931 6091480 3.1 1.4 0.9 Point Contact Unit Debris DBA_S2318 405717 6091500 1.3 1.1 1.1 Point Contact Unit Debris DBA_S2319 405694 6091469 1.7 0.8 0.9 Geological Boulder DBA_S2320 405629 6091518 1.1 1.0 0.7 Point Contact Unit Debris DBA_S2321 405620 6091538 1.4 1.1 0.5 Point Contact Unit Debris DBA_S2322 405290 6091552 2.0 1.4 0.5 Point Contact Unit Debris Page 26 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S2323 405312 6091518 1.9 1.2 0.7 Point Contact Unit Debris DBA_S2324 405348 6091560 3.4 1.9 0.5 Point Contact Unit Debris DBA_S2325 405329 6091593 2.4 1.2 0.5 Point Contact Unit Debris DBA_S2326 405594 6091534 2.1 1.2 0.5 Point Contact Unit Debris DBA_S2327 405740 6091623 3.3 1.4 0.8 Point Contact Unit Debris DBA_S2328 405641 6091648 1.1 0.9 0.7 Point Contact Unit Debris DBA_S2329 405209 6091737 2.0 1.8 0.6 Point Contact Unit Debris DBA_S2330 405390 6091699 1.9 1.5 0.6 Point Contact Unit Debris DBA_S2331 405597 6091759 1.4 1.4 0.4 Point Contact Unit Debris DBA_S2332 405586 6091795 1.4 0.9 0.3 Point Contact Unit Debris DBA_S2333 405439 6091786 1.3 0.8 0.7 Point Contact Unit Debris DBA_S2334 405506 6091800 2.7 0.6 1.2 Geological Isolated Rock <5% DBA_S2335 405532 6091829 2.6 1.9 1.2 Point Contact Unit Debris DBA_S2336 405137 6091937 4.3 1.9 0.8 Geological Boulder DBA_S2337 405312 6091837 1.2 0.7 0.5 Point Contact Unit Debris DBA_S2338 405178 6091984 2.1 0.9 0.8 Point Contact Unit Debris DBA_S2339 405211 6091981 3.1 2.3 0.7 Point Contact Unit Debris DBA_S2340 405458 6091996 3.6 1.0 0.5 Point Contact Unit Debris DBA_S2341 406103 6092072 3.8 1.8 0.4 Point Contact Unit Debris DBA_S2342 404988 6092254 1.9 1.3 0.6 Point Contact Unit Debris DBA_S2343 405012 6092309 99.0 75.9 1.0 Geological Boulder Cluster DBA_S2344 405154 6092310 1.5 1.1 0.7 Point Contact Unit Debris DBA_S2345 405472 6092316 1.4 0.6 0.6 Point Contact Unit Debris DBA_S2346 405561 6092283 3.9 0.8 0.6 Point Contact Unit Debris DBA_S2347 405572 6092287 5.0 3.5 1.6 Point Contact Unit Debris DBA_S2349 405661 6092338 1.8 0.8 0.6 Point Contact Unit Debris DBA_S2351 405664 6092341 2.0 0.8 0.5 Point Contact Unit Debris DBA_S2352 405234 6092495 2.4 1.4 0.8 Point Contact Unit Debris DBA_S2353 405290 6092536 2.4 1.2 0.6 Point Contact Unit Debris DBA_S2354 405415 6092498 1.6 0.9 0.6 Point Contact Unit Debris DBA_S2355 405356 6092631 105.1 70.5 1.7 Geological Boulder Cluster DBA_S2356 405379 6092624 1.9 1.7 1.2 Point Contact Unit Debris DBA_S2357 405474 6092584 4.1 1.2 0.5 Point Contact Unit Debris DBA_S2358 405570 6092661 1.9 1.0 0.3 Point Contact Unit Debris DBA_S2359 405604 6092672 2.7 0.9 0.6 Geological Boulder DBA_S2360 405845 6092563 2.6 2.7 0.6 Point Contact Unit Debris DBA_S2361 406091 6092532 4.6 1.0 0.4 Point Contact Unit Debris DBA_S2362 405337 6093017 0.6 0.6 0.3 Geological Boulder DBA_S2364 405361 6093041 0.8 0.3 0.3 Geological Boulder DBA_S2365 404882 6093144 1.5 0.5 0.7 Geological Boulder DBA_S2366 404926 6093185 1.5 0.5 0.7 Geological Boulder DBA_S2367 404760 6093194 0.7 0.2 0.1 Geological Boulder DBA_S2369 404975 6093493 1.3 0.2 0.8 Geological Boulder DBA_S2375 404839 6094965 1.7 0.9 1.8 Point Contact Unit Debris DBA_S2376 404877 6095033 3.8 0.8 0.3 Point Contact Unit Debris DBA_S2378 405862 6096261 2.0 0.6 0.5 Geological Boulder DBA_S2379 404300 6096271 3.5 1.0 0.5 Geological Boulder DBA_S2380 404384 6096233 25.0 15.0 0.4 Geological Boulder Cluster Page 27 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S2381 405133 6096401 0.3 0.2 0.5 Geological Boulder DBA_S2382 405228 6096463 0.3 0.2 0.4 Geological Boulder DBA_S2383 405245 6096683 1.3 0.7 0.4 Geological Boulder DBA_S2385 406718 6096884 1.6 0.8 0.5 Geological Boulder DBA_S2386 406601 6096811 1.8 1.2 0.7 Geological Boulder DBA_S2387 406475 6096933 3.6 2.3 0.4 Geological Boulder DBA_S2388 406900 6097180 1.3 0.6 0.7 Geological Boulder DBA_S2389 405127 6096758 20.0 15.0 0.3 Geological Boulder Cluster DBA_S2390 404584 6096836 1.0 0.9 0.7 Geological Boulder DBA_S2391 404409 6096905 0.6 0.5 0.5 Geological Boulder DBA_S2392 404277 6096899 10.5 2.1 0.6 Geological Boulder Cluster DBA_S2393 404135 6096964 16.0 12.0 0.9 Point Contact Unit Debris DBA_S2394 404692 6096908 0.3 0.3 0.2 Geological Boulder DBA_S2395 404671 6097030 0.9 0.8 0.1 Geological Boulder DBA_S2396 404444 6097133 0.9 0.3 0.5 Geological Boulder DBA_S2397 404393 6097178 3.0 1.3 0.8 Geological Boulder DBA_S2398 405010 6097312 0.5 0.5 0.5 Geological Boulder DBA_S2399 405095 6097588 1.4 0.5 0.4 Point Contact Unit Debris DBA_S2400 406311 6097437 0.7 0.2 0.4 Geological Boulder DBA_S2401 406171 6098204 1.3 1.0 0.2 Geological Boulder DBA_S2402 405981 6098116 10.0 9.0 0.3 Geological Boulder Cluster DBA_S2403 405905 6098006 1.3 0.5 0.6 Geological Boulder DBA_S2404 405924 6098440 1.3 1.1 0.1 Point Contact Unit Debris DBA_S2405 404544 6098306 2.5 0.5 0.3 Geological Boulder B20077 (4m) DBA_S2406 404884 6098676 0.8 0.1 0.7 Point Contact Unit Debris DBA_S2407 405411 6080472 4.1 1.0 0.3 Point Contact Unit Debris DBA_S2408 405125 6081230 2.9 1.5 0.5 Point Contact Unit Debris DBA_S2409 405286 6081389 1.9 1.1 0.7 Point Contact Unit Debris DBA_S2410 405114 6081518 1.4 0.5 0.6 Geological Isolated Rock <5% DBA_S2411 405126 6081539 3.7 1.5 0.5 Point Contact Unit Debris DBA_S2412 404930 6081657 3.3 1.9 0.3 Point Contact Unit Debris DBA_S2413 405039 6081759 1.9 1.4 0.5 Point Contact Unit Debris DBA_S2414 405150 6081842 2.9 2.1 0.6 Point Contact Unit Debris DBA_S2415 405111 6081898 1.8 1.1 1.0 Geological Boulder DBA_S2416 405114 6081996 1.6 0.8 0.9 Point Contact Unit Debris DBA_S2417 404864 6081805 3.1 1.4 0.3 Point Contact Unit Debris DBA_S2418 404821 6081872 2.9 2.6 0.8 Point Contact Unit Debris DBA_S2419 404857 6081953 159.1 92.5 1.0 Geological Boulder Cluster DBA_S2420 404796 6082028 1.7 1.1 0.5 Point Contact Unit Debris DBA_S2421 405062 6082181 4.5 2.9 1.5 Point Contact Unit Debris DBA_S2422 404996 6082185 2.7 2.3 1.5 Point Contact Unit Debris DBA_S2423 404927 6082107 103.4 83.7 0.6 Geological Boulder Cluster DBA_S2424 404815 6082209 2.3 1.6 1.3 Point Contact Unit Debris DBA_S2425 404747 6082147 223.6 198.6 0.7 Geological Boulder Cluster DBA_S2426 404616 6082121 2.7 1.7 0.9 Point Contact Unit Debris DBA_S2427 404676 6082192 2.9 1.5 0.7 Point Contact Unit Debris DBA_S2428 404603 6082276 2.1 1.1 1.0 Point Contact Unit Debris DBA_S2429 405022 6082507 1.7 0.9 0.2 Point Contact Unit Debris Page 28 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S2430 404365 6082046 1.8 1.8 0.3 Point Contact Unit Debris DBA_S2431 403628 6081711 1.3 1.0 0.3 Geological Boulder DBA_S2432 404192 6082232 4.0 2.7 1.2 Point Contact Unit Debris DBA_S2433 404444 6082312 3.1 1.6 0.6 Point Contact Unit Debris DBA_S2434 403869 6082713 2.1 1.7 1.2 Point Contact Unit Debris DBA_S2435 404474 6082714 2.5 1.0 0.4 Geological Boulder DBA_S2436 404519 6082755 8.7 1.5 0.5 Geological Boulder DBA_S2437 404407 6083602 1.5 0.6 0.6 Geological Boulder DBA_S2438 404274 6083828 2.4 1.3 0.8 Geological Boulder DBA_S2439 404091 6084006 68.7 63.7 0.6 Geological Boulder Cluster DBA_S2440 403817 6084114 5.2 3.3-0.5 Geological Depression DBA_S2441 404030 6084169 1.8 1.3 0.8 Geological Boulder DBA_S2442 403847 6084314 2.6 0.6 0.5 Geological Isolated Rock <5% DBA_S2443 402623 6083830 2.2 1.9 1.0 Point Contact Unit Debris DBA_S2444 403598 6084875 96.7 92.5 0.8 Geological Boulder Cluster DBA_S2445 404422 6085004 4.0 1.4 0.5 Point Contact Unit Debris DBA_S2446 404273 6085070 29.4 16.1 0.6 Geological Boulder Cluster DBA_S2447 403637 6085178 3.0 1.6 0.9 Geological Boulder DBA_S2448 404401 6085485 1.3 0.5 1.1 Geological Boulder DBA_S2449 404151 6085450 1.1 0.9 0.5 Geological Boulder DBA_S2450 403898 6085389 1.0 0.8 0.7 Geological Boulder DBA_S2451 403630 6085363 5.0 1.7 1.0 Geological Boulder DBA_S2452 403358 6085663 2.0 1.4 0.5 Geological Boulder DBA_S2453 403542 6085527 1.8 1.7 0.8 Geological Boulder DBA_S2454 403890 6085564 2.1 1.9 0.7 Geological Boulder DBA_S2455 403725 6085735 2.9 1.0 0.4 Geological Boulder DBA_S2456 403489 6085770 6.9 2.3 0.6 Point Contact Unit Debris DBA_S2457 403483 6085779 2.9 1.4 0.5 Point Contact Unit Debris DBA_S2458 403525 6085765 2.9 1.6 0.6 Geological Isolated Rock <5% DBA_S2459 403550 6085755 1.7 0.6 0.4 Geological Isolated Rock <5% DBA_S2460 403297 6085899 1.7 1.1 0.7 Point Contact Unit Debris DBA_S2461 403188 6086005 4.3 2.1 0.4 Point Contact Unit Debris DBA_S2462 403167 6086045 2.3 1.8 0.6 Point Contact Unit Debris DBA_S2463 403180 6086047 5.6 2.7 0.4 Point Contact Unit Debris DBA_S2464 403251 6086024 51.4 23.6 0.7 Geological Boulder Cluster DBA_S2465 403268 6086088 5.5 1.4 0.2 Geological Boulder DBA_S2466 403151 6086201 3.2 1.2 0.4 Geological Boulder DBA_S2467 403243 6086189 74.1 45.0 0.4 Geological Boulder Cluster DBA_S2468 403070 6086491 5.0 1.1 0.3 Point Contact Unit Debris DBA_S2469 403108 6086446 1.6 1.1 0.8 Point Contact Unit Debris DBA_S2470 403123 6086436 1.8 0.6 0.4 Geological Boulder DBA_S2471 403135 6086443 86.0 58.6 0.6 Geological Boulder Cluster DBA_S2472 403156 6086464 1.2 0.5 1.2 Geological Boulder DBA_S2473 403233 6086524 41.4 16.1 0.5 Geological Boulder Cluster DBA_S2474 403990 6085929 1.4 0.8 0.4 Geological Boulder DBA_S2475 403932 6085921 1.2 0.7 1.8 Geological Isolated Rock <5% DBA_S2476 403662 6085967 1.7 0.3 0.7 Geological Boulder DBA_S2477 403728 6085987 6.0 1.9 0.7 Geological Boulder Page 29 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S2478 404122 6086054 1.1 0.5 0.7 Geological Boulder DBA_S2479 403674 6086065 62.7 39.4 0.5 Geological Isolated Rock <5% DBA_S2480 403610 6086086 1.1 1.0 0.3 Geological Boulder DBA_S2481 403609 6086115 5.0 1.1 1.1 Point Contact Unit Debris DBA_S2482 403632 6086165 2.3 1.4 0.8 Geological Boulder DBA_S2483 403716 6086184 65.3 45.4 0.8 Geological Isolated Rock <5% DBA_S2484 404081 6086185 3.1 1.1 0.6 Geological Boulder DBA_S2485 403990 6086203 3.2 0.8 0.5 Geological Boulder DBA_S2486 403583 6086228 58.6 44.4 0.9 Geological Boulder Cluster DBA_S2487 403589 6086296 1.5 1.0 0.8 Geological Boulder DBA_S2488 403612 6086291 1.7 1.0 0.4 Geological Boulder DBA_S2489 403651 6086301 3.8 1.3 1.2 Geological Isolated Rock <5% DBA_S2490 403655 6086319 2.1 1.5 2.1 Geological Boulder DBA_S2491 403930 6086284 82.7 44.8 0.7 Geological Boulder Cluster DBA_S2492 403890 6086316 40.2 24.1 0.7 Geological Isolated Rock <5% DBA_S2493 403604 6086455 3.2 1.0 1.1 Geological Boulder DBA_S2494 403849 6086393 12.7 8.4 0.4 Geological Boulder Cluster DBA_S2495 403919 6086386 5.0 1.8 0.8 Geological Boulder DBA_S2496 403968 6086421 59.1 33.9 0.9 Geological Boulder Cluster DBA_S2497 403958 6086420 1.8 1.4 0.7 Geological Boulder DBA_S2498 404149 6086399 3.3 1.9 0.3 Geological Boulder DBA_S2499 404113 6086440 1.6 0.7 0.9 Geological Isolated Rock <5% DBA_S2500 404066 6086519 60.3 50.4 1.0 Geological Isolated Rock <5% DBA_S2501 404179 6086611 3.4 1.7 1.0 Geological Boulder DBA_S2502 403877 6086476 3.7 1.0 1.2 Geological Isolated Rock <5% DBA_S2503 403880 6086493 8.7 2.0 1.4 Geological Boulder DBA_S2504 403824 6086489 15.1 10.7 0.7 Geological Isolated Rock <5% DBA_S2505 403770 6086502 1.6 1.0 0.7 Geological Boulder DBA_S2506 403708 6086516 4.4 1.4 1.0 Point Contact Unit Debris DBA_S2507 403856 6086532 3.2 0.8 1.3 Geological Boulder DBA_S2508 403951 6086555 37.4 17.5 0.5 Geological Isolated Rock <5% DBA_S2509 403528 6086569 3.6 0.7 0.6 Geological Boulder DBA_S2510 403624 6086586 83.6 35.9 0.7 Geological Boulder Cluster DBA_S2511 403690 6086584 1.8 1.0 0.8 Geological Boulder DBA_S2512 403802 6086593 3.9 1.6 0.7 Geological Boulder DBA_S2513 403845 6086612 1.9 1.2 0.9 Geological Boulder DBA_S2514 403879 6086618 100.9 90.9 0.6 Geological Boulder Cluster DBA_S2515 403895 6086616 2.6 2.0 0.9 Geological Boulder DBA_S2516 403671 6086617 74.4 73.4 0.7 Geological Boulder Cluster DBA_S2517 403661 6086629 2.0 0.8 0.5 Geological Boulder DBA_S2518 403746 6086680 2.4 0.7 0.5 Geological Boulder DBA_S2519 403674 6086739 2.0 1.3 0.5 Geological Boulder DBA_S2520 403919 6086752 3.6 1.2 0.8 Geological Boulder DBA_S2521 404028 6086772 1.4 1.2 0.7 Geological Boulder DBA_S2522 404045 6086788 1.3 0.7 0.7 Geological Isolated Rock <5% DBA_S2523 404059 6086786 2.7 0.6 0.3 Geological Isolated Rock <5% DBA_S2524 404116 6086845 4.8 1.1 0.9 Geological Boulder DBA_S2525 403985 6086844 3.1 1.1 1.1 Geological Boulder Page 30 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S2526 403541 6086880 3.5 2.1 1.2 Geological Boulder DBA_S2528 403523 6086891 5.1 1.9 0.7 Geological Boulder DBA_S2529 403381 6086680 50.5 43.8 0.4 Geological Boulder Cluster DBA_S2530 403097 6086705 28.1 21.8 0.6 Geological Boulder Cluster DBA_S2531 403283 6086879 2.1 1.6 0.9 Geological Boulder DBA_S2532 403309 6086880 3.1 0.5 0.6 Geological Boulder DBA_S2533 403289 6086896 6.2 1.3 0.8 Geological Boulder DBA_S2534 403409 6086880 1.9 1.1 0.4 Geological Boulder DBA_S2535 403576 6086911 7.5 1.4 0.6 Geological Boulder DBA_S2536 403747 6086965 6.1 1.9 1.5 Geological Boulder DBA_S2537 403639 6086977 10.9 9.9 0.8 Geological Boulder Cluster DBA_S2538 403547 6086984 2.9 1.8 1.3 Geological Boulder DBA_S2539 403396 6086991 3.0 1.1 1.1 Geological Boulder DBA_S2540 403699 6087016 1.7 1.4 1.0 Geological Boulder DBA_S2541 403641 6087043 6.9 2.1 0.5 Geological Boulder DBA_S2542 403476 6087133 5.5 2.6 0.8 Geological Boulder DBA_S2543 403525 6087145 4.8 1.4 0.9 Geological Boulder DBA_S2544 403828 6087169 228.3 172.8 0.9 Geological Boulder Cluster DBA_S2545 404237 6086919 2.2 1.3 0.6 Geological Isolated Rock <5% DBA_S2546 403986 6086999 2.6 1.1 0.4 Geological Boulder DBA_S2547 403920 6086998 1.9 1.2 0.8 Geological Boulder DBA_S2548 403859 6087023 1.4 1.3 1.0 Geological Boulder DBA_S2549 403911 6087042 4.2 2.1 0.4 Geological Boulder DBA_S2550 404003 6087049 1.9 1.7 0.9 Geological Boulder DBA_S2551 403969 6087129 2.4 2.0 0.8 Geological Boulder DBA_S2552 403913 6087162 3.8 0.8 1.0 Geological Boulder DBA_S2553 403913 6087174 1.1 1.0 1.1 Geological Boulder DBA_S2554 403868 6087180 7.0 1.6 0.8 Geological Boulder DBA_S2555 403784 6087207 5.2 2.3 0.6 Geological Boulder DBA_S2556 403884 6087288 5.2 4.0 1.6 Geological Boulder DBA_S2557 403417 6087376 2.1 1.8 0.7 Geological Boulder DBA_S2558 403409 6087511 8.3 1.3 0.8 Geological Boulder DBA_S2559 403630 6087611 3.3 1.4 0.6 Geological Boulder DBA_S2560 403321 6087677 5.0 0.8 0.4 Geological Boulder DBA_S2561 403251 6087842 2.0 1.0 0.5 Geological Boulder DBA_S2562 402691 6088095 3.4 2.2 0.4 Point Contact Unit Debris DBA_S2563 402704 6088143 27.6 24.2 0.8 Geological Boulder Cluster DBA_S2564 403098 6088145 2.1 0.7 0.6 Geological Boulder DBA_S2565 403033 6088274 3.0 2.1 0.6 Geological Boulder DBA_S2566 402973 6088365 1.2 0.5 0.8 Geological Boulder DBA_S2567 402375 6088499 4.7 4.4 1.1 Geological Boulder DBA_S2568 402555 6088583 2.5 0.5 0.5 Geological Boulder DBA_S2569 403114 6088746 3.8 1.8 0.5 Geological Boulder DBA_S2570 403517 6088722 1.8 1.3 0.8 Geological Boulder DBA_S2571 403606 6088805 2.8 0.9 0.5 Geological Boulder DBA_S2572 403303 6089100 1.5 0.5 0.4 Geological Boulder DBA_S2573 404518 6089046 1.5 0.7 0.6 Geological Boulder DBA_S2574 404697 6089167 3.0 1.5 0.6 Geological Boulder Page 31 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S2575 404471 6089346 1.6 0.5 0.8 Geological Boulder DBA_S2576 404162 6089366 0.6 0.5 1.1 Geological Boulder DBA_S2577 404145 6089894 2.1 1.1 1.0 Geological Boulder DBA_S2578 403594 6089452 2.0 1.5 0.5 Geological Boulder DBA_S2579 403307 6089422 1.2 0.8 0.3 Geological Boulder DBA_S2580 403364 6089531 2.8 2.1 0.4 Geological Boulder DBA_S2581 403088 6089592 1.2 1.0 0.9 Geological Boulder DBA_S2582 402929 6089739 0.6 0.3 0.5 Geological Boulder DBA_S2583 403251 6089886 1.7 1.1 0.4 Geological Boulder DBA_S2584 403587 6089940 2.7 1.2 0.4 Geological Boulder DBA_S2585 403977 6090630 2.0 1.6 0.4 Point Contact Unit Debris DBA_S2586 403699 6091070 1.6 1.1 1.1 Point Contact Unit Debris DBA_S2587 403512 6091157 0.8 0.3 0.2 Geological Boulder DBA_S2589 403427 6091901 0.6 0.5 0.2 Geological Boulder DBA_S2590 402891 6080137 3.8 2.0 0.6 Point Contact Unit Debris DBA_S2591 402774 6080196 2.6 1.4 0.5 Geological Boulder DBA_S2592 402803 6080243 2.3 1.5 0.6 Geological Boulder DBA_S2593 402426 6080163 5.0 1.8 0.4 Geological Boulder DBA_S2594 402431 6080229 2.5 0.9 0.4 Geological Boulder DBA_S2595 402670 6080413 3.9 1.6 0.7 Geological Boulder DBA_S2596 402519 6080489 1.9 1.2 0.8 Geological Boulder DBA_S2597 402560 6080533 2.1 1.9 0.4 Geological Boulder DBA_S2598 402521 6080630 30.2 20.4 0.6 Geological Isolated Rock <5% DBA_S2599 402708 6080619 6.8 1.9 1.1 Geological Boulder DBA_S2600 402375 6080666 2.2 1.4 0.4 Geological Boulder DBA_S2601 402455 6080704 2.3 1.3 1.1 Geological Boulder DBA_S2602 402470 6080727 1.7 0.6 1.7 Geological Boulder DBA_S2603 402782 6080718 5.0 2.4 0.9 Geological Boulder DBA_S2604 402527 6080758 1.3 0.7 0.9 Geological Boulder DBA_S2605 402607 6080793 4.3 0.5 0.6 Geological Boulder DBA_S2606 402808 6080755 2.5 1.3 0.7 Geological Boulder DBA_S2607 403022 6080782 4.2 1.3 0.7 Geological Boulder DBA_S2608 402202 6080864 12.4 6.2 0.7 Geological Isolated Rock <5% DBA_S2609 402252 6080861 1.3 0.6 1.0 Geological Isolated Rock <5% DBA_S2610 402345 6080878 4.3 2.0 0.7 Geological Boulder DBA_S2611 402511 6080844 1.6 1.1 1.2 Geological Boulder DBA_S2612 402702 6080877 3.7 0.6 0.6 Geological Boulder DBA_S2613 402657 6080908 2.0 1.4 0.7 Geological Boulder DBA_S2614 402506 6080898 1.5 0.5 0.7 Geological Boulder DBA_S2615 402498 6080958 3.6 1.9 1.2 Geological Boulder DBA_S2616 402357 6080980 1.5 1.5 1.1 Geological Boulder DBA_S2617 402572 6081009 33.9 26.5 0.7 Geological Isolated Rock <5% DBA_S2618 402716 6081018 2.7 1.0 1.3 Geological Boulder DBA_S2619 403056 6081019 1.5 1.2 0.5 Point Contact Unit Debris DBA_S2620 402127 6081111 2.9 2.1 1.3 Point Contact Unit Debris DBA_S2621 402323 6081177 5.2 3.1 0.4 Point Contact Unit Debris DBA_S2622 402131 6081179 2.0 0.8 0.7 Geological Isolated Rock <5% DBA_S2623 402183 6081211 4.8 3.4 0.7 Geological Isolated Rock <5% Page 32 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S2624 402159 6081254 6.5 3.3 0.7 Point Contact Unit Debris DBA_S2625 402355 6081263 2.4 0.8 0.6 Geological Isolated Rock <5% DBA_S2626 402460 6081244 1.4 1.1 0.6 Geological Boulder DBA_S2627 402673 6081131 4.4 1.6 0.7 Geological Boulder DBA_S2628 402950 6081127 1.7 0.7 0.4 Geological Boulder DBA_S2629 402788 6081237 1.8 1.0 1.1 Geological Isolated Rock <5% DBA_S2630 402465 6081256 2.8 1.1 0.7 Geological Isolated Rock <5% DBA_S2631 402506 6081311 2.4 1.3 0.5 Geological Boulder DBA_S2632 402669 6081333 2.0 0.6 0.3 Geological Isolated Rock <5% DBA_S2633 402926 6081301 1.5 0.8 0.4 Geological Boulder DBA_S2634 402920 6081341 2.3 1.9 0.5 Geological Isolated Rock <5% DBA_S2635 402936 6081404 2.0 1.5 0.7 Geological Boulder DBA_S2636 402723 6081490 4.2 1.9 0.6 Geological Boulder DBA_S2637 402550 6081440 5.4 1.6 0.5 Geological Boulder DBA_S2638 402303 6081452 3.4 1.7 0.8 Geological Boulder DBA_S2639 402013 6081334 1.6 0.6 0.4 Geological Isolated Rock <5% DBA_S2640 401977 6081429 2.8 1.6 1.0 Geological Boulder DBA_S2641 402092 6081437 2.1 1.4 0.7 Geological Boulder DBA_S2642 402863 6081706 4.3 0.9 0.4 Geological Boulder DBA_S2643 402235 6081571 2.2 1.2 0.8 Geological Boulder DBA_S2644 402268 6081595 2.4 1.1 0.5 Geological Isolated Rock <5% DBA_S2645 402241 6081627 1.7 1.5 0.8 Geological Boulder DBA_S2646 402114 6081709 39.2 23.9 0.7 Geological Boulder Cluster DBA_S2647 402183 6081788 2.2 1.8 1.1 Geological Boulder DBA_S2648 402113 6081844 1.2 0.7 0.8 Geological Isolated Rock <5% DBA_S2649 401777 6082101 2.2 1.2 0.6 Geological Boulder DBA_S2650 401847 6082130 1.6 1.0 0.8 Geological Boulder DBA_S2651 402536 6082266 0.2 0.2 0.6 Geological Isolated Rock <5% DBA_S2652 402581 6082614 2.9 0.5 0.8 Geological Boulder DBA_S2653 402612 6082721 2.4 1.1 0.7 Geological Boulder DBA_S2654 402158 6082777 5.4 1.1 0.7 Geological Boulder DBA_S2655 402201 6082780 1.8 0.5 0.7 Geological Boulder DBA_S2656 402219 6082789 1.5 1.1 0.9 Geological Boulder DBA_S2657 402220 6082968 2.3 1.1 0.4 Geological Boulder DBA_S2658 402423 6082955 2.8 1.8 0.7 Geological Boulder DBA_S2659 402369 6082954 1.7 1.7 1.0 Geological Boulder DBA_S2660 402431 6083009 8.1 0.5 0.9 Linear Contact Linear Debris DBA_S2661 402157 6082974 5.3 1.2 1.0 Point Contact Unit Debris DBA_S2662 402104 6083055 2.8 0.6 0.4 Point Contact Unit Debris DBA_S2664 402064 6083266 1.6 1.3 0.4 Geological Boulder DBA_S2665 401729 6083726 1.3 0.6 0.3 Geological Isolated Rock <5% DBA_S2666 401871 6083814 1.5 0.8 0.4 Geological Isolated Rock <5% DBA_S2667 402430 6083515 2.8 2.6 0.7 Geological Boulder DBA_S2668 402195 6083677 3.0 0.8 0.7 Geological Boulder DBA_S2669 402026 6083831 1.9 0.7 0.6 Geological Isolated Rock <5% DBA_S2670 402200 6083936 1.7 0.6 0.5 Geological Isolated Rock <5% DBA_S2671 402064 6084017 1.4 0.6 0.5 Geological Isolated Rock <5% DBA_S2672 402016 6084064 1.4 0.6 0.8 Geological Boulder Page 33 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S2673 402433 6084053 3.2 1.5 1.2 Geological Boulder DBA_S2674 402380 6084284 1.5 0.5 0.5 Geological Boulder DBA_S2675 402174 6084384 1.6 0.8 0.4 Point Contact Unit Debris DBA_S2676 401996 6084405 2.6 1.2 0.2 Point Contact Unit Debris DBA_S2677 401987 6084719 7.0 1.9 0.6 Point Contact Unit Debris DBA_S2678 402153 6084879 3.6 2.3 0.6 Point Contact Unit Debris DBA_S2679 402022 6084880 2.0 0.8 0.5 Geological Boulder DBA_S2680 401986 6085032 1.6 1.1 0.3 Geological Boulder DBA_S2681 401988 6084973 2.5 0.5 0.6 Geological Boulder DBA_S2688 401563 6081063 1.7 1.4 0.6 Point Contact Unit Debris DBA_S2697 401495 6081385 2.6 1.4 0.5 Geological Boulder DBA_S2706 401269 6081719 8.0 1.8 0.9 Geological Boulder DBA_S2707 401098 6081486 17.8 1.0 nmh 351.6 Linear Contact Linear Debris DBA_S2708 400895 6081507 5.8 1.9 0.5 Geological Boulder DBA_S2709 400880 6081688 4.4 1.6 0.8 Geological Boulder DBA_S2710 400972 6080960 1.1 0.5 0.6 Geological Boulder DBA_S2711 400943 6080637 3.8 1.3 0.7 Geological Boulder DBA_S2712 400698 6080523 4.9 1.2 1.3 Geological Boulder DBA_S2714 400056 6080691 1.8 1.1 0.9 Geological Isolated Rock <5% DBA_S2715 399879 6080855 3.2 1.6 0.7 Geological Boulder DBA_S2716 399858 6080878 2.1 1.7 0.9 Geological Boulder DBA_S2717 399759 6081132 1.8 1.1 0.7 Geological Boulder DBA_S2718 399703 6081507 36.3 24.5 0.6 Geological Boulder Cluster DBA_S2740 401457 6082764 43.9 18.4 1.2 Geological Boulder Cluster DBA_S2744 401540 6082843 2.0 1.4 0.7 Geological Boulder DBA_S2745 401676 6082804 2.5 1.7 0.8 Geological Boulder DBA_S2746 400789 6081850 1.6 1.0 0.8 Geological Boulder DBA_S2747 400785 6081859 2.1 1.0 0.8 Geological Isolated Rock <5% DBA_S2748 400822 6082054 3.2 0.6 0.4 Geological Isolated Rock <5% DBA_S2749 400443 6082389 5.1 2.1 1.1 Geological Boulder DBA_S2750 400641 6082538 2.0 0.7 0.5 Geological Boulder DBA_S2751 401275 6082873 1.2 0.9 0.4 Geological Boulder DBA_S2752 401348 6082915 50.0 36.8 0.7 Geological Boulder Cluster DBA_S2753 401482 6082949 1.4 1.0 0.4 Geological Boulder DBA_S2755 401064 6083244 2.1 0.8 0.6 Point Contact Unit Debris DBA_S2758 401603 6083461 2.6 1.8 1.1 Point Contact Unit Debris DBA_S2764 401574 6083794 1.0 0.8 1.3 Geological Boulder DBA_S2765 401033 6083962 2.8 2.5 0.5 Geological Boulder DBA_S2766 401022 6084005 7.4 2.0 0.4 Geological Boulder DBA_S2767 401200 6084280 1.2 0.8 0.8 Geological Boulder DBA_S2768 401286 6084224 1.9 0.8 0.8 Geological Boulder DBA_S2799 402039 6086469 2.6 1.8 1.0 Geological Boulder DBA_S2800 402018 6086756 1.4 0.5 0.5 Geological Boulder DBA_S2801 402252 6087958 1.8 1.1 0.9 Geological Boulder DBA_S2807 402340 6088997 1.1 0.5 0.7 Geological Boulder DBA_S2808 401861 6089456 1.5 1.1 0.8 Point Contact Unit Debris DBA_S2809 401950 6089512 2.3 0.8 0.5 Geological Boulder DBA_S2837 402747 6093376 1.4 0.2 0.1 Geological Boulder Page 34 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S2838 403188 6093457 1.6 1.5 0.6 Geological Boulder DBA_S2839 403134 6093543 4.9 1.8 0.6 Geological Boulder DBA_S2840 403080 6093538 2.6 1.2 0.6 Geological Boulder DBA_S2841 401135 6091758 1.2 0.3 0.3 Geological Boulder DBA_S2842 401147 6092378 0.2 0.2 0.1 Geological Boulder DBA_S2843 401555 6091726 0.8 0.6 0.6 Geological Boulder DBA_S2845 402662 6093891 1.0 0.4 0.4 Geological Boulder DBA_S2846 402741 6094000 0.9 0.6 0.7 Geological Boulder DBA_S2847 402744 6094052 0.7 0.2 0.7 Geological Boulder DBA_S2848 402703 6094111 2.1 1.1 0.7 Geological Boulder DBA_S2852 402379 6094902 0.6 0.5 0.4 Geological Boulder DBA_S2855 403035 6095097 4.0 1.0 0.7 Geological Boulder DBA_S2856 403048 6095250 2.0 1.2 0.6 Geological Boulder DBA_S2857 402733 6095136 1.4 0.3 0.4 Geological Boulder DBA_S2858 402434 6095219 0.3 0.2 0.7 Geological Boulder DBA_S2859 402369 6095323 1.1 0.7 0.3 Geological Boulder DBA_S2860 402656 6095383 1.6 1.4 0.1 Geological Boulder DBA_S2861 402198 6095547 0.7 0.5 0.5 Geological Boulder DBA_S2862 402499 6095567 1.4 0.8 0.4 Geological Boulder DBA_S2865 402718 6095630 0.6 0.3 0.5 Geological Boulder DBA_S2866 402056 6095840 1.0 0.3 0.5 Geological Boulder DBA_S2867 402447 6095841 0.6 0.5 0.5 Geological Boulder DBA_S2868 402341 6096118 1.6 0.3 0.1 Geological Boulder DBA_S2889 404332 6099327 2.7 1.3 0.4 Geological Boulder DBA_S2891 404309 6099919 3.3 2.5 0.5 Geological Boulder DBA_S2892 404511 6100165 1.0 0.9 0.1 Geological Boulder DBA_S2893 403995 6099939 1.4 1.2 0.7 Geological Boulder DBA_S2894 404106 6100071 2.0 0.7 0.3 Geological Boulder DBA_S2897 402161 6100597 3.0 2.8 0.6 Geological Boulder DBA_S2898 404878 6099805 4.3 1.2 0.5 Geological Boulder DBA_S2899 404764 6099856 1.2 0.3 0.6 Geological Boulder DBA_S2900 404933 6100280 1.6 1.5 0.5 Geological Boulder DBA_S2901 404808 6100414 4.4 1.1 0.0 Geological Boulder DBA_S2902 404624 6100386 0.5 0.5 0.3 Geological Boulder DBA_S2903 404539 6100449 2.5 2.0 0.4 Geological Boulder DBA_S2907 404078 6100823 28.6 18.3 0.3 Geological Boulder Cluster DBA_S2908 404532 6100842 1.4 0.3 0.2 Geological Boulder DBA_S2909 404264 6100979 10.1 1.9 1.4 Geological Boulder Cluster DBA_S2910 404368 6100966 2.0 0.3 0.6 Geological Boulder DBA_S2911 404446 6101025 0.6 0.3 0.4 Geological Boulder DBA_S2912 404394 6101091 2.9 0.7 0.2 Geological Boulder DBA_S2913 404248 6101166 29.5 13.3 0.5 Geological Boulder Cluster DBA_S2914 404259 6101273 2.0 1.1 0.7 Geological Boulder DBA_S2915 404188 6101449 4.9 1.1 0.4 Geological Boulder DBA_S2916 404222 6101509 33.8 31.5 0.4 Geological Boulder Cluster DBA_S2917 404605 6101630 3.4 0.4 0.4 Geological Boulder DBA_S2918 404466 6101618 1.2 0.6 0.5 Geological Boulder DBA_S2919 404319 6101620 1.7 0.9 0.8 Geological Boulder Page 35 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S2920 404373 6101918 2.4 1.7 0.5 Geological Boulder DBA_S2921 403984 6101837 1.2 1.1 0.5 Geological Boulder DBA_S2922 403956 6101809 1.8 1.8 0.5 Geological Boulder DBA_S2933 404107 6102427 6.1 1.1 0.4 Geological Boulder DBA_S2934 404046 6102306 3.5 1.2 0.0 Geological Boulder DBA_S2935 403974 6102309 3.8 1.0 0.6 Geological Boulder DBA_S2936 403921 6102350 18.5 15.7 1.3 Geological Boulder Cluster DBA_S2937 403879 6102409 0.8 0.8 0.1 Geological Boulder DBA_S2939 403597 6102473 14.0 13.4 1.1 Geological Boulder Cluster DBA_S2944 403542 6102764 2.9 1.4 0.5 Geological Boulder DBA_S2947 403700 6102931 1.5 0.3 0.9 Geological Boulder DBA_S2948 403254 6103027 0.4 0.3 0.2 Geological Boulder DBA_S2949 403522 6103097 0.8 0.4 0.4 Geological Boulder DBA_S2950 404709 6103037 5.1 0.9 0.5 Geological Boulder DBA_S2951 404409 6103255 2.1 2.1 0.4 Geological Boulder DBA_S2952 404366 6103186 2.6 1.1 0.7 Geological Boulder DBA_S2953 404016 6102970 10.0 8.0 0.3 Geological Boulder Cluster DBA_S2954 403970 6103093 1.0 0.3 0.5 Geological Boulder DBA_S2959 404116 6103705 1.3 0.9 0.5 Geological Boulder DBA_S2960 404040 6103808 1.7 1.1 0.3 Geological Boulder DBA_S2967 404499 6104227 1.6 0.3 0.2 Geological Boulder DBA_S2968 409719 6101416 15.3 2.6 0.7 Point Contact Unit Debris DBA_S2969 407540 6101049 0.3 0.3 0.5 Geological Boulder DBA_S2970 407916 6101533 2.6 0.4 0.5 Geological Boulder DBA_S2971 407309 6101218 0.8 0.6 0.5 Geological Boulder DBA_S2972 407163 6101658 4.1 2.5 0.4 Geological Boulder DBA_S2973 407232 6101787 0.9 0.6 0.5 Geological Boulder DBA_S2974 406726 6101948 0.5 0.5 0.3 Geological Boulder B20099 (33m) DBA_S2975 406571 6102441 0.8 0.3 1.5 Geological Boulder DBA_S2976 407961 6102670 3.7 0.8 0.3 Geological Boulder DBA_S2977 408837 6103485 1.1 0.3 0.3 Geological Boulder DBA_S2978 407472 6103316 24.0 17.4 0.2 Linear Contact Wire Rope or cable partially dug into seabed DBA_S2979 405983 6103311 0.3 0.3 0.5 Geological Boulder DBA_S2980 405820 6103533 2.6 1.4 0.6 Geological Boulder DBA_S2981 405659 6104081 5.9 3.1 0.7 Geological Boulder DBA_S2982 406182 6105099 0.3 0.3 0.6 Geological Boulder DBA_S2983 405448 6104617 0.8 0.8 0.0 Geological Boulder DBA_S2984 405159 6104567 2.8 2.2 0.6 Geological Boulder DBA_S2985 405324 6105118 0.3 0.3 0.3 Geological Boulder DBA_S2986 405242 6105191 0.9 0.2 0.6 Geological Boulder DBA_S2987 405077 6104773 0.8 0.3 0.3 Geological Boulder DBA_S2988 405080 6105077 0.6 0.3 0.5 Geological Boulder DBA_S2989 405045 6105008 4.0 1.0 1.0 Geological Boulder DBA_S2990 404900 6104875 1.4 1.2 0.3 Geological Boulder DBA_S2991 404828 6104943 0.6 0.6 0.7 Geological Boulder DBA_S2992 404833 6105108 30.0 20.0 0.1 Geological Boulder Cluster DBA_S2993 404763 6105132 1.7 0.7 0.4 Geological Boulder DBA_S2994 404804 6105210 2.9 1.2 0.8 Geological Boulder Page 36 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S2995 404826 6105228 15.0 10.0 0.7 Geological Boulder Cluster DBA_S2996 404732 6105283 30.0 20.0 0.8 Geological Boulder Cluster DBA_S2997 404633 6105434 0.3 0.3 0.6 Geological Boulder DBA_S2998 404425 6105128 1.9 1.8 0.2 Geological Boulder DBA_S2999 404428 6105269 1.0 0.9 0.5 Geological Boulder DBA_S3000 404488 6105336 0.8 0.3 0.4 Geological Boulder DBA_S3001 404442 6105526 1.8 1.7 0.5 Geological Boulder DBA_S3002 404375 6105851 0.6 0.2 0.6 Geological Boulder DBA_M5011 (29m) DBA_S3003 404369 6106011 2.2 0.4 0.6 Geological Boulder DBA_S3004 404713 6106085 0.5 0.3 0.2 Geological Boulder DBA_S3005 404941 6106153 0.7 0.6 0.1 Geological Boulder DBA_S3006 404850 6106179 0.9 0.7 0.4 Geological Boulder DBA_S3007 404183 6105073 1.4 0.3 0.4 Geological Boulder DBA_S3011 404317 6105673 4.3 3.9 0.5 Geological Boulder DBA_S3012 404296 6105950 3.2 2.4 0.6 Geological Boulder DBA_S3013 404471 6106415 1.2 0.9 0.7 Geological Boulder DBA_S3014 404503 6106439 5.5 2.3 0.5 Geological Boulder DBA_S3015 404683 6106796 3.0 1.4 0.8 Geological Boulder M10079 (25m) DBA_S3016 404544 6106737 2.1 1.3 0.3 Geological Boulder DBA_S3017 404356 6107091 0.6 0.5 0.6 Geological Boulder DBA_S3018 404329 6106807 1.9 1.5 1.0 Geological Boulder DBA_S3019 404334 6106753 1.7 0.7 0.5 Geological Boulder DBA_S3020 404173 6106786 1.9 0.9 1.6 Geological Boulder DBA_S3021 404137 6106760 2.4 1.1 1.5 Geological Boulder DBA_S3022 404066 6106784 1.7 0.9 0.5 Geological Boulder DBA_S3023 403948 6106761 1.5 0.2 0.9 Geological Boulder DBA_S3024 403885 6106902 2.0 0.7 0.6 Geological Boulder DBA_S3025 403850 6107034 1.1 0.2 0.6 Geological Boulder DBA_S3026 403704 6106674 0.9 0.5 1.1 Geological Boulder DBA_S3027 403481 6106578 0.8 0.6 0.6 Geological Boulder DBA_S3028 403282 6107073 1.5 0.6 0.5 Geological Boulder DBA_S3029 403165 6106929 1.2 0.9 0.7 Geological Boulder DBA_S3030 403043 6106833 1.9 1.5 0.8 Geological Boulder DBA_S3031 402908 6106779 0.8 0.5 0.7 Geological Boulder DBA_S3032 402909 6106770 2.3 1.0 0.3 Geological Boulder DBA_S3034 402718 6106779 1.9 0.3 0.5 Geological Boulder DBA_S3035 402561 6106979 10.0 2.0 0.4 Geological Boulder Cluster DBA_S3036 402539 6106923 1.7 1.1 0.6 Geological Boulder DBA_S3037 402465 6106882 56.1 48.4 0.6 Geological Boulder Cluster DBA_S3038 402509 6106813 1.1 0.8 0.4 Geological Boulder DBA_S3039 402244 6106849 1.8 1.7 0.4 Geological Boulder DBA_S3040 401506 6107068 73.0 55.4 0.7 Geological Boulder Cluster DBA_S3041 401450 6106562 1.7 1.2 0.4 Geological Boulder DBA_S3042 401935 6105571 4.1 2.2 0.2 Geological Boulder DBA_S3043 401114 6106956 2.0 1.6 0.6 Geological Boulder DBA_S3044 401181 6106764 177.7 172.9 0.5 Geological Boulder Cluster DBA_S3045 401177 6106692 1.5 0.6 0.3 Geological Boulder DBA_S3046 401054 6106765 1.2 0.2 0.4 Geological Boulder Page 37 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S3047 401030 6106897 4.1 1.3 0.0 Geological Boulder DBA_S3048 400625 6106790 1.5 1.1 0.4 Geological Boulder DBA_S3049 400621 6106881 168.5 100.3 0.7 Geological Boulder Cluster DBA_S3050 400687 6106970 2.2 1.0 0.6 Geological Boulder DBA_S3051 400563 6106994 169.1 105.0 0.5 Geological Boulder Cluster DBA_S3052 400434 6106961 15.6 12.4 1.0 Geological Boulder Cluster DBA_S3053 400464 6106807 2.6 1.0 0.8 Geological Boulder DBA_S3054 400484 6106734 20.8 6.9 0.7 Geological Boulder Cluster DBA_S3055 400569 6106560 3.3 1.5 0.4 Geological Boulder DBA_S3056 400377 6106699 0.4 0.2 0.6 Geological Boulder DBA_S3057 400362 6106800 0.8 0.5 1.0 Geological Boulder DBA_S3058 400327 6107036 1.6 0.6 0.8 Geological Boulder DBA_S3059 400322 6107066 43.2 22.6 0.7 Geological Boulder Cluster DBA_S3060 400212 6106980 4.8 1.1 0.6 Geological Boulder DBA_S3061 400158 6107117 0.2 0.2 0.2 Geological Boulder DBA_S3062 400112 6107090 1.3 0.3 0.2 Geological Boulder DBA_S3063 400027 6107197 1.1 0.3 0.6 Geological Boulder DBA_S3064 399993 6106960 0.4 0.3 0.5 Geological Boulder DBA_S3065 399942 6106959 0.6 0.3 0.6 Geological Boulder DBA_S3066 399962 6106896 2.2 1.3 0.7 Geological Boulder M10080 (9m) DBA_S3067 399890 6106847 1.3 1.3 0.4 Geological Boulder DBA_S3068 399755 6106829 67.5 46.9 0.7 Geological Boulder Cluster DBA_S3069 399935 6106736 8.3 0.9 0.5 Geological Boulder DBA_S3070 399964 6106650 1.0 0.3 0.4 Geological Boulder DBA_S3071 399965 6106637 0.4 0.4 0.3 Geological Boulder DBA_S3072 399457 6106692 1.2 0.3 0.2 Geological Boulder DBA_S3073 399990 6106296 2.2 1.1 0.8 Geological Boulder DBA_S3074 399966 6106115 2.6 2.0 0.5 Geological Boulder DBA_S3075 399674 6106214 1.8 1.2 0.7 Geological Boulder DBA_S3076 399687 6106157 2.1 1.8 0.7 Geological Boulder DBA_S3077 399646 6105842 1.8 1.0 0.4 Geological Boulder DBA_S3078 399763 6105747 6.7 1.4 0.4 Geological Boulder DBA_S3079 403008 6105755 210+ nmw nmd 52.3 Linear Contact Scar (Trawl or Anchor) DBA_S3080 403138 6105448 300.0 nmw nmh 42.5 Linear Contact Wire Rope or cable, associated DBA_S3081 with (132m) DBA_S3081 403009 6105421 300.0 nmw nmh 73.8 Linear Contact Wire Rope or cable, associated DBA_S3080 with (132m) DBA_S3082 402532 6105347 305.7 nmw nmd Linear Contact Scar (Trawl or Anchor) DBA_S3083 402473 6105204 190+ nmw nmd 216.9 Linear Contact Scar (Trawl or Anchor) DBA_S3084 401296 6104850 nmw nmd 255.2 Linear Contact Scar (Trawl or Anchor) DBA_S3085 401296 6104824 200+ nmw nmd Linear Contact Scar (Trawl or Anchor) DBA_S3086 401220 6104673 130+ nmw nmd 20.8 Linear Contact Scar (Trawl or Anchor) DBA_S3087 401178 6104576 nmw nmd 201.2 Linear Contact Scar (Trawl or Anchor) DBA_S3088 401369 6104509 9.9 2.7 0.1 Geological Boulder DBA_S3089 401237 6104178 2.4 2.0 0.7 Geological Boulder DBA_S3090 400308 6105110 1.5 0.6 0.3 Geological Boulder DBA_S3091 400228 6105196 1.1 1.0 0.8 Geological Boulder DBA_S3092 400196 6105169 2.6 1.1 0.6 Geological Boulder DBA_S3093 400017 6105135 4.2 1.5 0.8 Geological Boulder DBA_S3094 398655 6105488 1.2 0.8 0.6 Geological Boulder Page 38 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S3095 400427 6103886 0.9 0.9 0.4 Geological Boulder DBA_S3096 400759 6103674 6.2 1.5 0.4 Geological Boulder DBA_S3097 402026 6103021 1.4 0.2-0.2 Geological Depression DBA_S3098 399356 6103979 14.2 13.1 0.5 Geological Boulder Cluster DBA_S3099 399500 6103703 1.1 0.4 0.2 Geological Boulder B20128 (11m) DBA_S3100 399021 6107073 1.0 0.3 0.4 Geological Boulder DBA_S3101 398392 6105584 2.7 1.9 0.6 Geological Boulder DBA_S3102 397185 6106200 122.4 nmw nmd 184.9 Linear Contact Scar (Trawl or Anchor) DBA_S3103 397211 6106007 200.2 150.9 nmd 190.8 Linear Contact Scar (Trawl or Anchor) DBA_S3104 397035 6105335 218.8 181.3 nmd 16.0 Linear Contact Scar (Trawl or Anchor) DBA_S3105 401428 6101219 1.1 0.9 0.3 Geological Boulder DBA_S3106 401536 6100405 2.1 1.6 0.6 Geological Boulder DBA_S3107 401028 6100174 7.2 1.2 0.2 Geological Boulder DBA_S3108 400738 6100480 2.0 1.6 1.2 Geological Boulder DBA_S3109 399952 6101435 0.3 0.3 0.5 Geological Boulder DBA_S3110 399624 6101007 8.8 2.6 0.4 Geological Boulder DBA_S3111 399455 6100673 0.2 0.2 0.3 Geological Boulder DBA_S3112 396866 6100592 30.3 nmw nmd 88.2 Linear Contact Scar (Trawl or Anchor) DBA_S3113 398268 6097788 1.9 1.0 0.6 Geological Boulder B20071 (4m) DBA_S3114 401435 6098412 2.9 0.7 0.7 Geological Boulder DBA_S3115 401508 6098193 2.3 1.5 0.9 Geological Boulder DBA_S3116 400903 6097951 5.4 2.0 0.8 Geological Boulder DBA_S3117 398105 6097392 146.3 1.4-0.1 221.5 Linear Contact Scar (Trawl or Anchor) DBA_S3118 398392 6096525 2.0 1.8 0.4 Geological Boulder DBA_S3119 401265 6096497 79.4 51.8 0.5 Geological Boulder Cluster DBA_S3120 401103 6096591 0.3 0.3 0.4 Geological Boulder DBA_S3121 401068 6096562 0.9 0.5 0.3 Geological Boulder DBA_S3122 401072 6096450 1.3 1.0 0.9 Geological Boulder DBA_S3123 401071 6096459 1.4 1.1 0.1 Geological Boulder DBA_S3124 400932 6096369 2.8 1.5 0.2 Geological Boulder DBA_S3125 400810 6096566 3.8 2.0 0.2 Geological Boulder DBA_S3126 400628 6096533 1.3 0.9 0.6 Geological Boulder DBA_S3127 400688 6096058 26.8 5.4 2.3 Point Contact Unit Debris DBA_S3128 398283 6095874 3.9 1.1 1.0 Geological Boulder DBA_S3129 398355 6095780 1.2 0.8 0.4 Geological Boulder DBA_S3130 398558 6095797 2.7 2.3 2.7 Geological Boulder DBA_S3131 398778 6095796 0.5 0.3 0.4 Geological Boulder DBA_S3132 398679 6095606 2.0 1.0 0.4 Geological Boulder DBA_S3133 398875 6095568 3.7 2.6 0.5 Geological Boulder DBA_S3134 399159 6095548 2.5 2.2 1.1 Geological Boulder DBA_S3135 399503 6095242 1.9 1.2 0.3 Geological Boulder DBA_S3136 399242 6095274 1.0 0.2 0.6 Geological Boulder DBA_S3137 400061 6094484 1.4 0.9 0.3 Geological Boulder DBA_S3138 399322 6094791 0.9 0.2 0.1 Geological Boulder DBA_S3139 398577 6095059 6.6 5.4 0.6 Point Contact Unit Debris DBA_S3140 398479 6094690 4.0 3.5 0.8 Geological Boulder DBA_S3141 398654 6094721 69.4 nmw nmd 32.9 Linear Contact Scar (Trawl or Anchor) DBA_S3142 398849 6094504 4.2 3.0 0.3 Geological Boulder Page 39 of 40
Project: Dogger Bank Tranche A Target Database Contract No.: GSL10109 DBA_S3143 398883 6094381 4.4 1.4 0.7 Geological Boulder DBA_S3144 398584 6094436 0.5 0.5 0.3 Geological Boulder DBA_S3145 398575 6094154 2.9 1.0 1.1 Geological Boulder DBA_S3146 400376 6093903 2.2 0.8 0.5 Geological Boulder DBA_S3147 400498 6093411 0.3 0.2 0.4 Geological Boulder DBA_S3148 399191 6093420 1.5 0.3 0.8 Geological Boulder DBA_S3149 399015 6093325 1.7 0.8 0.2 Geological Boulder DBA_S3150 399565 6092222 3.9 1.0 1.0 Geological Boulder DBA_S3151 400319 6092490 1.0 0.6 0.6 Geological Boulder DBA_S3152 400290 6092273 1.8 1.6 0.9 Geological Boulder DBA_S3153 399913 6091909 0.6 0.5 0.8 Geological Boulder DBA_S3154 398107 6091786 2.0 1.8 0.3 Geological Boulder DBA_S3155 398121 6091802 1.5 0.3 0.3 Geological Boulder DBA_S3156 394260 6092120 1.6 0.3 0.4 Geological Boulder DBA_S3157 398355 6089000 2.0 1.5 0.7 Geological Boulder DBA_S3158 398784 6087531 4.9 1.7 0.7 Geological Boulder DBA_S3159 398710 6087461 1.1 0.7 0.0 Geological Boulder DBA_S3160 398580 6087424 0.5 0.3 0.1 Geological Boulder DBA_S3161 399015 6087183 1.2 0.8 0.1 Geological Boulder DBA_S3162 398978 6087138 1.0 0.8 0.1 Geological Boulder DBA_S3163 399081 6086793 1.1 1.0 1.5 Point Contact Unit Debris DBA_S3164 399046 6086598 2.7 1.7 0.8 Geological Boulder DBA_S3165 399404 6086282 4.2 3.5 1.1 Geological Boulder DBA_S3166 398625 6086229 1.4 1.1 0.6 Geological Boulder DBA_S3167 399303 6085747 1.6 0.9 0.5 Point Contact Unit Debris DBA_S3168 399284 6085720 5.9 1.3 0.5 Geological Boulder DBA_S3169 399092 6085511 2.5 1.5 0.5 Geological Boulder DBA_S3170 398946 6085337 1.7 1.4 0.6 Geological Boulder DBA_S3171 398907 6085285 6.9 0.5 0.5 218.9 Linear Contact Linear Debris DBA_S3172 398889 6085062 3.4 1.5 0.4 Geological Boulder DBA_S3173 399062 6085032 3.9 1.3 0.8 Geological Boulder DBA_S3174 399094 6084998 1.9 1.2 0.3 Point Contact Unit Debris DBA_S3175 399099 6084780 1.5 1.1 0.8 Geological Boulder DBA_S3176 399077 6084737 11.5 2.2 2.0 Geological Boulder Cluster DBA_S3177 399030 6084571 3.4 1.0 0.6 Geological Boulder DBA_S3178 393267 6086582 1.4 1.1 0.4 Geological Boulder DBA_S3179 399463 6084207 2.5 1.4 0.5 Geological Boulder DBA_S3180 399504 6084062 1.4 1.1 0.6 Geological Boulder DBA_S3181 399933 6083516 4.4 1.3 0.8 Geological Boulder DBA_S3182 400137 6083338 3.1 0.8 0.5 Geological Boulder DBA_S3183 399456 6083139 4.1 2.2 0.6 Geological Boulder DBA_S3184 405899 6106650 1.8 0.9 0.2 Geological Boulder DBA_S3185 414555 6102496 2.1 0.7-0.1 Geological Depression DBA_S3186 405726 6095112 0.9 0.6 0.5 Geological Boulder Page 40 of 40
GEMS International Group of Companies Geotechnical, Geophysical and Metocean Expertise around the World APPENDIX B FIGURE BASE MAP GEMS Survey Limited St. James House, St. James Place, Gains Lane Devizes, Wiltshire, SN10 1FB United Kingdom Registration Number: 3083699 T: +44 1380 735 200 F: +44 1380 735 201 devizes@gems-group.com www.gems-group.com
400000E 425000E 450000E 6100000N 6075000N DBA10AQM104201A DBA10AQM1087 DBA10AQM111401A DBA10AQM1121 DBA10KJM118501A 27 31 32 33 30 38 41 61 DBA10KJM123601A DBA10KJM123901A DBA10AQM104201A 29 28 17 DBA10KJM116701A DBA10KJM136201A DBA10AQM1087 54 62 DBA10KJM136701A DBA10AQM140901A 39 34 57 DBA10AQM111401A 42 DBA10AQM1121 35 53 49 DBA10AQM1454 DBA10AQM145701B DBA10AQM145701A DBA10AQM1480 DBA10KJM116701A 21 18 13 24 23 63 20 22 19 60 DBA10AQM1536 DBA10KJM118501A DBA10KJM120502A DBA10KJM120502A 58 DBA10KJM155501A DBA10KJM123601A DBA10KJM123901A DBA10AQM145701B DBA10KJM132601A DBA10KJM132601A DBA10AQM1380 68 DBA10AQM147501A DBA10KJM153501A 46 26 55 DBA10KJM136201A DBA10KJM136701A DBA10AQM140901A DBA10AQM1454 DBA10AQM145701A DBA10AQM1480 16 DBA10AQM1536 DBA10KJM155501A DBA10KJM158101C DBA10KJM158101C DBA10KJM159501A 69 72 DBA10AQM1380 36 DBA10AQM147501A LEGEND 70 DBA10KJM153501A DBA10KJM159501A 67 Survey Limit Track L ine DBA10KJM155501A Track Line Name Extent of sub bottom data 21 Location of figure in report 6100000N 6075000N 6050000N 400000E Grid: UTM Zone 31N, WGS84 Scale: 1:250,000 425000E 450000E 6050000N Chart showing location of relevant report figures