Scottish Sanitary Survey Review
Total Page:16
File Type:pdf, Size:1020Kb
Scottish Sanitary Survey Review Busta Voe Lee North SI 327; 410, 409, 755, 753, 754 October 2014 Busta Voe Lee North Sanitary Report Title Survey Review Scottish Sanitary Survey Project Name Programme Food Standards Agency in Client/Customer Scotland Cefas Project Reference C6316D Document Number C6316D_2014_5 Revision V1.0 Date 27/10/2014 Revision History Revision Date Pages revised Reason for revision number V0.1 28/08/2014 - Draft for external consultation Change to approved sampling V1.0 27/10/2014 iv officers Name Position Date Author Liefy Hendrikz, Ron Lee Scottish Sanitary Survey 27/10/2014 Team Senior Shellfish Hygiene Checked Michelle Price-Hayward 27/10/2014 Scientist Senior Shellfish Hygiene Approved Michelle Price-Hayward 27/10/2014 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 Report Distribution – Busta Voe Lee North Name Agency Joyce Carr Scottish Government David Denoon SEPA Hazel MacLeod SEPA Douglas Sinclair SEPA Fiona Garner Scottish Water Alex Adrian Crown Estate Dawn Manson Shetland Island Council Sean Williamson HMMH (Scotland) Ltd Michael Laurensen Blueshell Mussels, Ltd. Review Specification and Introduction Sanitary surveys are used to demonstrate compliance with the requirements stated in Annex II (Chapter II Paragraph 6) of Regulation (EC) 854/2004, whereby if the competent authority decides in principle to classify a production or relay area it must: • make an inventory of pollution sources of human/animal origin likely to be a contamination source for the production areas; • examine the quantities of organic pollutants which are released during the different periods of the year, according to the seasonal variations of both human and animal populations in the catchment area, rainfall readings, wastewater treatment, etc.; • determine the characteristics of the circulation of pollutants by virtue of current patterns, bathymetry and the tidal regime in the production area; • establish a sampling programme of bivalve molluscs in the production area which is based on the examination of established data, and with a number of samples, a geographical distribution of the sampling points and a sampling frequency which must ensure that the results of the analysis are as representative as possible for the area considered. 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) recommends the re-evaluation of sanitary surveys every six years. Location, extent and nature of fisheries and faecal pollution sources may change over time and the review is conducted to determine whether the sampling plan and/or production area boundaries remain appropriate and protective of public health. As specified by the Food Standards Agency, this review is comprised of a brief desktop search of publicly available information together with a shoreline survey. No additional data requests are submitted to external bodies. The review is intended to identify significant changes in: • Historic microbiological data • Sewage treatment and sewerage infrastructure • Housing and development • Harvester operations The output of the review is a report identifying any new information that has been obtained and/or whether major elements of the original sanitary survey can be regarded as essentially unchanged. That report includes an overall assessment as to whether the production area/classification zone boundaries and/or RMPs should be modified from those recommended in the original report and if so, a description of the revised boundaries and a revised sampling plan with the boundaries and RMP(s) locations. A sanitary survey was undertaken in 2008 for Busta Voe Lee North. The survey was conducted to identify the location, extent and nature of the shellfisheries and the potential Busta Voe Lee North Sanitary Survey Review V1.0 27/10/2014 Page | i sources of faecal contamination to the shellfisheries, and to recommend boundaries and sampling plans for the production areas. The associated shoreline survey was undertaken in September 2007. The output of the sanitary survey included a report and recommended sampling plans . These sampling plans are identified on the following pages alongside the recommended changes following findings from this review. The present report constitutes a review of publicly available information in order to assess changes that have occurred since the 2008 sanitary survey report (see the Review Specification section for further detail). It is not intended to present detailed information relating to pollution sources that were identified in the previous report. This review should be read in conjunction with the 2008 sanitary survey report. Busta Voe Lee North Sanitary Survey Review V1.0 27/10/2014 Page | ii Table of Contents 1. Area Description and Fishery 1 2. Population and Human Sewage Impacts 4 2.1 Population................................................................................................. 4 2.2 Sewage Discharges .................................................................................. 6 3. Farm Animal Population and Agricultural Impacts 10 4. Wildlife 13 5. Watercourses 17 6. Meteorological data 19 6.1 Rainfall ................................................................................................... 19 6.2 Wind ....................................................................................................... 20 7. Historical E. coli Data 23 7.1 Summary of microbiological results ........................................................ 24 7.2 Geographical patterns of results ............................................................. 27 7.3 Temporal patterns of results ................................................................... 29 8. Movement of contaminants 32 9. Overall Assessment 33 10. Recommendations 37 11. References 39 12. List of Figures and Tables 40 APPENDICES 1. PLANNING APPLICATIONS 2. SHORELINE SURVEY REPORT © Crown Copyright 2014. Food Standards Agency Scotland and Cefas. All rights reserved. Busta Voe Lee North Sanitary Survey Review V1.0 27/10/2014 Page | iii Sampling Plan – Busta Voe Lee North 2008 report 2014 review Changes from 2008 PRODUCTION Busta Voe Lee North AREA Busta Voe Lee, Busta Voe, Hevden Ness, SITE NAMES North of Linga, Wetherstaness No changes SI 327-410-08; SI-327-409-08; SI-327-755- SIN 08; SI-327-753-08 and SI-327-754-08 SPECIES Common mussels TYPE OF FISHERY Long-line NGR OF RMP HU 3570 6616 HU 3577 6615 Changed to include consideration of contaminants coming EAST 435700 435770 from land to the east NORTH 116160 1166150 of the fishery Increased tolerance to TOLERANCE (M) 20 m 40 m allow for movement of lines DEPTH (M) 1-3 m 1-3 m No change METHOD OF Hand SAMPLING FREQUENCY OF Monthly SAMPLING No change LOCAL Shetland Island Council AUTHORITY Sean Williamson, Sean Williamson, AUTHORISED George Williamson, Marion Anderson, Change in personnel SAMPLER (S) Kathryn Winter, Gwen Williamson, Marion Slater Vicki Smith Area bounded by Area bounded by lines drawn lines drawn between HU 3597 between HU 3597 6634 to HU 3459 6634 to HU 3459 6660 and from HU 6660 and from HU 3420 6590 to HU RECOMMENDED 3420 6590 to HU 3420 6605 and from PRODUCTION 3420 6605 and from No changes HU 3430 6450 to AREA HU 3430 6450 to HU 3520 6432 and HU 3520 6432 and HU 3568 6428 to HU 3568 6428 to HU 3657 6419 to HU 3657 6419 to HU 3614 6483 HU 3614 6483 extending to extending to MHWS MHWS Busta Voe Lee North Sanitary Survey Review V1.0 27/10/2014 Page | iv 1. Area Description and Fishery The location of Busta Voe Lee North is shown in Figure 1.1. © Crown Copyright and Database 2014. All rights reserved. Ordnance Survey Licence number [GD100035675] Figure 1.1 Location of Busta Voe Lee North Busta Voe Lee North Sanitary Survey Review V1.0 27/10/2014 Page | 1 The five sites classified in the 2008 report remain classified in 2014, with details listed in Table 1.1. Table 1.1 FSAS 2014 classified sites in Busta Voe Lee North Production Site SIN Species RMP area Busta Voe Lee SI-327-410-08 Busta Voe SI-327-409-08 Busta Voe Common HU 3570 6616 Lee North Hevden Ness SI-327-755-08 mussels North of Linga SI-327-753-08 Wetherstaness SI-327-754-08 The current production area boundaries and RMP stated in the FSAS 2014/15 classification document are the same as those recommended in the 2008 report and are shown in Figure 1.2. Mussel farm boundaries are shown to have varied slightly between the 2007 and 2014 shoreline surveys (see Figure 1.2), though the location of each farm has remained largely constant. All five sites were identified as still being active during the 2014 shoreline survey and harvesting continued to be rotational. The number of double headed long-lines has remained the same at the following sites: Busta Voe Lee (n=10), Hevden Ness (n=10) and Wetherstaness (n=6). The North of Linga site has increased from four to six lines. The number of lines present at Busta Voe was not given in the 2008 sanitary survey report: in 2014 nine double headed long-lines present. It was noted during the 2014 shoreline survey that the long-lines at each site had 10 m droppers. The maximum permitted equipment for each site is as follows: Site Maximum Maximum length number of lines (m) Busta Voe Lee 10 155 Busta Voe 9 200 Hevden Ness 10 220 North of Linga 10 260 Wetherstaness 10 200 Busta Voe Lee North Sanitary Survey Review V1.0 27/10/2014 Page | 2 © Crown Copyright and Database 2014.