Scottish Sanitary Survey Report
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Scottish Sanitary Survey Report yyy Sanitary Survey Report East Burwick SI-583-1060-08 October 2014 East Burwick Sanitary Report Title Survey Report Scottish Sanitary Survey Project Name Programme Food Standards Agency in Client/Customer Scotland Cefas Project Reference C6316C Document Number C6316C_2014_7 Revision V1.0 Date 27/10/2014 Revision History Revision Date Pages revised Reason for revision number 0.1 05/09/2014 - Draft report for consultation Correction of typographical 1.0 27/10/2014 1, 27 errors noted in consultation Name Position Date Jessica Larkham, Frank Scottish Sanitary Author Cox, Liefy Hendrikz, 27/10/2014 Survey Team Michelle Price-Hayward Principal Shellfish Checked Ron Lee 28/10/2014 Hygiene Scientist Principal Shellfish Approved Ron Lee 28/10/2014 Hygiene Scientist This report was produced by Cefas for its Customer, FSAS, for the specific purpose of providing a sanitary survey as per the Customer’s requirements. Although every effort has been made to ensure the information contained herein is as complete as possible, there may be additional information that was either not available or not discovered during the survey. Cefas accepts no liability for any costs, liabilities or losses arising as a result of the use of or reliance upon the contents of this report by any person other than its Customer. Centre for Environment, Fisheries & Aquaculture Science, Weymouth Laboratory, Barrack Road, The Nothe, Weymouth DT4 8UB. Tel 01305 206 600 www.cefas.defra.gov.uk East Burwick Sanitary Survey Report V1.0 27/10/2014 Page i of 120 Report Distribution – East Burwick Date Name Agency Joyce Carr Scottish Government David Denoon SEPA Douglas Sinclair SEPA Hazel MacLeod SEPA Fiona Garner Scottish Water Alex Adrian Crown Estate Dawn Manson Local Authority Sean Williamson HMMH (Scotland) Ltd Michael Tait Harvester Partner Organisations The hydrographic assessment and the shoreline survey and its associated report were undertaken by Shetland Seafood Quality Control, Scalloway. East Burwick Sanitary Survey Report V1.0 27/10/2014 Page i Table of Contents I. Executive Summary .................................................................................. 1 II. Sampling Plan ........................................................................................... 3 III. Report ....................................................................................................... 4 1. General Description .......................................................................... 4 2. Fishery .............................................................................................. 6 3. Human Population ............................................................................. 8 4. Sewage Discharges ........................................................................ 11 4.1 Community Discharges ................................................................ 11 4.2 Consented Private Discharges ..................................................... 13 5. Agriculture ....................................................................................... 17 6. Wildlife ............................................................................................ 20 7. Land Cover ..................................................................................... 24 8. Watercourses .................................................................................. 26 9. Meteorological Data ........................................................................ 28 9.1 Rainfall ......................................................................................... 28 9.2 Wind ............................................................................................. 30 10. Classification Information ................................................................ 33 12. Historical E. coli Data ...................................................................... 34 12.1 Validation of historical data .......................................................... 34 12.2 Summary of microbiological results ............................................. 35 12.3 Overall geographical pattern of results ........................................ 35 12.4 Overall temporal pattern of results ............................................... 36 12.5 11.4 Effect of environmental factors ............................................. 37 12.6 Summary and conclusions ........................................................... 37 13. Designated Waters Data ................................................................. 38 14. Bathymetry and Hydrodynamics ..................................................... 39 14.1 Introduction .................................................................................. 39 14.2 Bathymetry ................................................................................... 39 14.3 Tidal Information .......................................................................... 42 14.4 Currents ....................................................................................... 45 14.5 Stratification ................................................................................. 49 14.6 Summary ...................................................................................... 51 15. Shoreline Survey Overview ............................................................. 53 16. Bacteriological Survey ..................................................................... 56 17. Overall Assessment ........................................................................ 57 18. Recommendations .......................................................................... 59 19. References ...................................................................................... 61 20. List of Figures and Tables ............................................................... 63 Appendices 1. General Information on Wildlife Impacts 2. Tables of Typical Faecal Bacteria Concentrations 3. Hydrographic Section Glossary 4. Hydrographic Section Appendix 5. Shoreline Survey Report 6. SEPA discharge data © Crown Copyright 2014. Food Standards Agency Scotland and Cefas. All rights reserved. East Burwick Sanitary Survey Report V1.0 27/10/2014 Page ii I. Executive Summary Under (EC) Regulation 854/2004, which sets forth specific rules for the organisation of official controls on products of animal origin intended for human consumption, sanitary surveys of production areas and their associated hydrological catchments and coastal waters are required in order to establish the appropriate representative monitoring points (RMPs) for the monitoring programme. The purpose of the sanitary survey is to demonstrate compliance with the requirements stated in Annex II (Chapter II Paragraph 6) of Regulation (EC) 854/2004. The sanitary survey results in recommendations on the location of RMPs, the frequency of sampling for microbiological monitoring, and the boundaries of the production areas deemed to be represented by the RMPs. A sanitary survey was undertaken on the classified mussel fishery at East Burwick on the basis recommended in the European Union Reference Laboratory publication: “Microbiological Monitoring of Bivalve Mollusc Harvesting Area Guide to Good Practice: Technical Application” (http://www.cefas.defra.gov.uk/nrl/information-centre/eu-good-practice-guide.aspx). This area was selected for survey at this at it is a newly classified area. Bur Wick is a small inlet formed by the Burwick peninsula, a short distance northwest of Scalloway on the west coast of Mainland in the Shetland Islands. The fishery is comprised of a single long-line mussel farm with 9 long-lines and 8-10 metre droppers. The area was subject to a fast track classification in summer 2014. The main sources of contamination to the Bur Wick fishery are: · A community septic tank discharge from Maa Ness STW, which serves the population of Scalloway. · Intermittent discharges from the Maa Ness works to the same outfall as above. · Diffuse pollution from livestock, primarily sheep, grazed on the north shore of Bur Wick. · Diffuse wildlife source contamination. The Scalloway outfall discharges within 1 km south of the mussel farm. A bacteriological survey showed higher E. coli results in mussel samples taken from the southern end of the mussel farm, indicating that southern end of the farm was more impacted by faecal contamination than the northern or western extents of the farm. The main pathway of contamination is via wind-driven current movement, particularly during winds from the east, south or southwest. These would drive contamination northward along the coast and into Bur Wick. East Burwick Sanitary Survey Report V1.0 27/10/2014 Page 1 of 64 No changes are recommended to the provisional production area boundaries, however it is recommended that the RMP be moved from its provisional location to HU 3906 4012, which lies on the southeast corner of the mussel farm. East Burwick Sanitary Survey Report V1.0 27/10/2014 Page 2 of 64 II. Sampling Plan Production Area East Burwick Mussels Site Name East Burwick Mussels SIN SI-583-1060-08 Species Common mussel Type of Fishery Long line aquaculture NGR of RMP HU 3906 4012 East 439060 North 1140120 Tolerance (m) 40 Depth (m) 1-3 Method of Sampling Hand Frequency of Monthly Sampling Local Authority Shetland Islands Council Authorised Sean Williamson Sampler(s) Marion Anderson Agnes Smith Alan Harpin Production area The area within a line boundary drawn between HU 3889 4061 to HU 3874 4023 to HU 3904 3985 extending