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Scottish Sanitary Survey Report

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Scottish Sanitary Survey Report Scottish Sanitary Survey Report Sanitary Survey Report Hamar Voe SI-655-1404-08 April 2015 Hamar Voe Sanitary Report Title Survey Report Project Name Scottish Sanitary Survey Food Standards Agency Client/Customer Scotland Cefas Project Reference C6316C Document Number C6316C_2014_20 Revision V1.0 Date 10/04/2015 Revision History Revision Date Pages revised Reason for revision number Id3 04/02/2015 - Internal draft for review Draft report for external v0.1 06/02/2015 all consultation Amended to correct table i,ii,22,23-26, V1.0 10/04/2015 numbering, pagination, and 28,29,32-42 typographic errors. Name Position Date Jessica Larkham, Frank Cox, Scottish Sanitary Survey Author 20/01/2015 Liefy Hendrikz Team Principal Shellfish Checked Ron Lee 10/04/2015 Hygiene Scientist Senior Shellfish Hygiene Approved Michelle Price-Hayward 10/04/2015 Scientist This report was produced by Cefas for its Customer, the Food Standards Agency in Scotland, 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 Report Distribution – Hamar Voe 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 Laurenson Harvester Partner Organisations The hydrographic assessment and the shoreline survey and its associated report were undertaken by Shetland Seafood Quality Control, Scalloway. Table of Contents I. Executive Summary .............................................................................................. ii II. Sampling Plan ..................................................................................................... iii III. Report .................................................................................................................. 1 1. General Description ........................................................................................................ 1 2. Fishery ............................................................................................................................ 3 3. Human Population ........................................................................................................... 5 4. Sewage Discharges ........................................................................................................ 7 4.1 Community Discharges ................................................................................................ 7 4.2 Consented Private Discharges - SEPA ....................................................................... 9 4.3 Shoreline Survey Discharge Observations ................................................................ 10 4.4 Summary ................................................................................................................... 10 5. Agriculture ..................................................................................................................... 12 6. Wildlife ........................................................................................................................... 15 8. Land Cover .................................................................................................................... 19 9. Watercourses ................................................................................................................ 21 10. Meteorological Data ...................................................................................................... 23 10.1 Rainfall ....................................................................................................................... 23 10.2 Wind .......................................................................................................................... 24 11. Classification Information .............................................................................................. 27 12. Historical E. coli Data .................................................................................................... 28 12.1 Validation of historical data ........................................................................................ 28 12.2 Summary of microbiological results ........................................................................... 28 12.3 Overall geographical pattern of results ...................................................................... 29 12.4 Overall temporal pattern of results ............................................................................. 29 12.5 Summary and conclusions ......................................................................................... 30 13. Designated Waters Data ............................................................................................... 31 14. Bathymetry and Hydrodynamics ................................................................................... 32 14.1 Introduction ................................................................................................................ 32 14.2 Bathymetry................................................................................................................. 32 14.3 Tidal Information ........................................................................................................ 34 14.4 Currents ..................................................................................................................... 37 14.5 Stratification ............................................................................................................... 40 14.6 Summary ................................................................................................................... 42 15. Shoreline Survey Overview ........................................................................................... 44 16. Bacteriological Survey ................................................................................................... 47 17. Overall Assessment ...................................................................................................... 48 18. Recommendations ........................................................................................................ 50 19. References .................................................................................................................... 52 20. List of Figures and Tables ............................................................................................. 53 Appendices 1. General Information on Wildlife Impacts 2. Tables of Typical Faecal Bacteria Concentrations 3. Hydrographic Assessment Glossary 4. Hydrographic Section Appendix 5. Shoreline Survey Report 6. SEPA Discharge Consents © Crown Copyright 2015. Food Standards Agency Scotland and Cefas. All rights reserved. Hamar Voe Sanitary Survey Report V1.0 10/04/2015 i of 53 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 Hamar Voe classified production area on the basis recommended in the European Union Reference Laboratory publication: “Microbiological Monitoring of Bivalve Mollusc Harvesting Area Guide to Good Practice: Technical Application” (https://eurlcefas.org/media/13831/gpg_issue-5_final_all.pdf). Hamar Voe is an inlet on the east coast of the Northmavine which is located on the northwest of mainland Shetland. Hamar Voe is a common mussel (Mytilus edulis) fishery, comprised of a single long-line mussel farm located along the east shore of the main body of the voe. The main sources of contamination to the mussel farm are: · Diffuse agricultural sources, mainly sheep, grazed around the voe · Diffuse wildlife sources particularly from seabirds present at or near the mussel farm There is a potential for diffuse human source contamination arising from homes and a shore base along the voe to the north of the mussel farm. Contamination is most likely to be carried to the fishery via fresh water runoff and watercourses, and may be more concentrated in fresher water near the surface. Surface currents assisted by wind forcing may produce particle transport distances of up to 1.5 km. Salinity profiles recorded during the shoreline survey showed evidence of freshwater influence in the surface waters at the fishery which were greater
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