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Westmeath County Council Kilbeggan Wastewater Treatment Plant

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Westmeath County Council Kilbeggan Wastewater Treatment Plant Westmeath County Council Kilbeggan Wastewater Treatment Plant - Discharge Licence Application For inspection purposes only. Consent of copyright owner required for any other use. Appropriate Assessment October 2010 MGW0058CR0032 EPA Export 26-07-2013:23:31:39 For inspection purposes only. Consent of copyright owner required for any other use. EPA Export 26-07-2013:23:31:39 Kilbeggan Wastewater Discharge Licence Application - Appropriate Assessment Table of Contents 1 INTRODUCTION................................................................................................... 1 2 APPROPRIATE ASSESSMENT METHODOLOGY ....................................................... 3 3 APPROPRIATE ASSESSMENT METHODOLOGY ....................................................... 5 3.1 INTRODUCTION ................................................................................................................ 5 4 STAGE 1 - SCREENING........................................................................................ 7 4.1 STEP 1 - MANAGEMENT OF THE SITE ................................................................................ 7 4.2 STEP 2 - PROJECT DESCRIPTION AND EXISTING ENVIRONMENT ......................................... 7 4.3 PROJECT DESCRIPTION.................................................................................................... 7 4.4 EXISTING ENVIRONMENT ................................................................................................ 12 5 STEP 3 - CHARACTERISTICS OF THE NATURA 2000 SITES ....................................21 5.1 RIVER SHANNON CALLOWS CSAC – SITE CHARACTERISTICS .......................................... 22 5.2 RIVER SHANNON CALLOWS CSAC – QUALIFYING FEATURES AND POTENTIAL THREATS AND IMPACTS..................................................................................................................................... 22 5.3 RIVER SHANNON CALLOWS CSAC – CONSERVATION OBJECTIVES ................................... 24 5.4 MIDDLE SHANNON CALLOWS SPA.................................................................................. 24 5.5 MIDDLE SHANNON CALLOWS SPA – QUALIFYING FEATURES AND POPULATION SIGNIFICANCE ..................................................................................................................................... 25 5.6 MIDDLE SHANNON CALLOWS SPA – CONSERVATION OBJECTIVES ................................... 25 6 STEP 4 - ASSESSMENT OF SIGNIFICANCE ............................................................26 7 SUMMARY AND MITIGATION MEASURES ..............................................................32 For inspection purposes only. Consent of copyright owner required for any other use. List of Figures Figure 1.1 Location of Kilbeggan WWTP discharge point Relative to Natura 2000 Sites Figure 1.2 Outline Steps for an Appropriate Assessment Figure 4.1 Schematic Location Plan of Sampling Points and Relevant Discharges Figure 6.1 Flow Diagram for Screening Water Services Infrastructure Projects: Kilbeggan WWTP Discharge Licence MGW0058RP0007 i Rev F01 EPA Export 26-07-2013:23:31:39 Kilbeggan Wastewater Discharge Licence Application - Appropriate Assessment List of Tables Table 4.1 Waste Assimilative Capacity (WAC) Of River Brosna Table 4.2 Kilbeggan WWTP - Proposed Upgrade Works – Phase 1 Table 4.3 Proposed Treatment Standards of Kilbeggan WWTP Upgrade Phase 1 Table 4.4 EPA Monitoring Data for Receiving Waters (River Brosna) Table 4.5 Potential In-Combination Effects of Other Plans and Projects Table 5.1 Qualifying Habitats of the River Shannon Callows cSAC and Associated Threats and Impacts Table 5.2 Qualifying Species of the River Shannon Callows cSAC Table 5.3 Qualifying Species of the Middle Shannon Callows SPA and their Population Significance Table 6.1 Stage 1 - Screening Matrix for Kilbeggan and Environs Discharge Licence Application Appendices For inspection purposes only. Consent of copyright owner required for any other use. Appendix A Drawings Appendix B Water Quality Monitoring - River Brosna Appendix C NPWS - Site Synopsis MGW0058RP0007 ii Rev F01 EPA Export 26-07-2013:23:31:39 Kilbeggan Wastewater Discharge Licence Application - Appropriate Assessment 1 INTRODUCTION Westmeath County Council submitted the Kilbeggan Wastewater Discharge Licence Application to the EPA on the 17th September 2008 in accordance with the requirements of the Wastewater Discharge (Authorisation) Regulations 2007 (SI 684, 2007). The Kilbeggan Wastewater Treatment Plant (WWTP) was constructed in 1986 to cater for a design loading population equivalent (PE) of 2,250. It is currently operating for a loading of approximately 2,600 PE and also treats surface water from a combined sewerage system. Treated effluent from Kilbeggan WWTP is currently being discharged into the River Brosna. This river eventually discharges to the River Shannon approximately 45km downstream of Kilbeggan WWTP where the Grand Canal also discharges to the River Shannon. The point at which the River Brosna discharges to the River Shannon has been designated the River Shannon Callows candidate Special Area of Conservation (cSAC) (site code: 000216) and the Middle Shannon Callows Special Protection Area (SPA) (site code: 004096) (also referred to as Natura 2000 sites). There are also another three cSAC sites located close to the River Brosna between the WWTP and the point at which it discharges to the River Shannon. - Clare Bog cSAC (side code:000572) (approximately 1.5km south of the River Brosna), - Ferbane Bog cSAC (side code:000575) (approximately 1 km south of the River Brosna), For inspection purposes only. and Consent of copyright owner required for any other use. - Moyclare Bog cSAC (side code: 000581) (approximately 1 km south of the River Brosna). Given the nature of the wastewater discharge, the nature of these three Natura Sites (bogs) and their distance from the River Brosna, it is not considered that these sites need to be considered further in the appropriate assessment process for Kilbeggan wastewater treatment discharge licence. Figure 1.1 shows the location of Kilbeggan WWTP and its discharge point relative to these Natura Sites. On the 1st July 2010 the EPA issued Westmeath County Council with a Section 18 Notice under SI 684 of 2007 to supply additional information in relation to Kilbeggan Wastewater discharge licence application (Ref D0103-01). Point 5 of this notice requests the following: MGW0058RP0007 1 Rev F01 EPA Export 26-07-2013:23:31:39 Legend Kilbeggan WWTP Discharge Point cSAC cSPA KilbegganKilbeggan WWTPWWTP DischargeDischarge PointPoint River MiddleMiddle ShannonShannon CallowsCallows SPASPA ClaraClara BogBog cSACcSAC FerbaneFerbane BogBog cSACcSAC AA NNAA SSNN OO BBRR MiddleMiddle ShannonShannon CallowsCallows SPASPA MoyclareMoyclare BogBog cSACcSAC BB RR 0 50 100 EE Kilometers IIIVV RR Client Westmeath County Council For inspection purposes only. Project AA Screening for Kilbeggan Consent of copyright owner required for any other use. WWTP Discharge Licence Title Location of Kilbeggan WWTP discharge point Relative to Natura 2000 Sites Figure 1.1 Lyrr Building, IDA Business & Technology Park, MiddleMiddle ShannonShannon CallowsCallows SPASPA Mervue, Galway, MiddleMiddle ShannonShannon CallowsCallows SPASPA Ireland T +353 91 400200 F +353 91 534199 E [email protected] W rpsgroup.com/ireland Issue Details Drawn by: M.C.S Project No. MGW0058 Checked by: M.W. File Ref. Approved by: P.J.G MGW0058MI0048D01 Scale: N.T.S Drawing No. Rev. Date: August '10 MI0048 D01 Notes 1. This drawing is the property of RPS Group Ltd. It is a confidential document and must not be copied, used, or its contents divulged without prior written consent. 2. All levels are referred to Ordnance Datum, Malin Head. 3. Ordnance Survey Ireland Licence EN 0005010 ©Copyright Government of Ireland. EPA Export 26-07-2013:23:31:39 Kilbeggan Wastewater Discharge Licence Application - Appropriate Assessment RPS has been commissioned by Westmeath County Council to prepare an Appropriate Assessment Screening Report in response to the above. The assessment was conducted in line with the Habitats Directive 92/43/EEC, Article 6(3), the 2009 EPA Guidance Document - Waste Water Discharge Licensing- Appropriate Assessment and the recommendations and protocol set out in the Water Services Circular Letter L8/08: Water Services Investment and Rural Water Programmes – Protection of Natural Heritage and National Monuments (2nd September 2008). For inspection purposes only. Consent of copyright owner required for any other use. MGW0058RP0007 2 Rev F01 EPA Export 26-07-2013:23:31:39 Kilbeggan Wastewater Discharge Licence Application - Appropriate Assessment 2 APPROPRIATE ASSESSMENT METHODOLOGY The Kilbeggan wastewater discharge licence application details the current practice of discharging treated effluent from the WWTP to the River Brosna which in turn discharges to the River Shannon, approximately 45 km downstream. The point at which it discharges to the Shannon forms part of the River Shannon Callows candidate Special Area of Conservation (cSAC) (site code: 000216) and the Middle Shannon Callows Special Protection Area (SPA) (site code: 004096) (Natura 2000 sites). As a result an Appropriate Assessment Screening Assessment is required under the Habitats Directive 92/43/EEC, Article 6(3) and (4), Assessment of Plans and Projects Significantly Affecting Natura 2000 Sites. Articles 6(3) and (4) of the Directive, state the following; 6.3 ‘Any plan or project not directly connected with or necessary to the
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