boyle local area plan 2012 - 2018 - Roscommon County Council

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PART II: DEVELOPMENT STRATEGY 2012-2018 & BEYOND Chapter 3: Infrastructure & Services Roscommon County Council will take cognisance of the OPW’s Flooding Report and any future reports in relation to flood risk for the Boyle area and remaining County. Developments granted permission in areas close to flood plains will contain measures to ensure that the risks of flooding are minimised or eliminated. 3.4.2 Flood Risk & Protection Strategy The Flood Risk & Protection Strategy aims to; • Avoid development in areas at risk of flooding by not permitting development in flood risk areas, particularly floodplains, unless it is fully justified that there are wider sustainability grounds for appropriate development and unless the flood risk can be managed to an acceptable level without increasing flood risk elsewhere and where possible, reducing flood risk overall; • Adopt a sequential approach to flood risk management based on avoidance, reduction and then mitigation of flood risk as the overall framework for assessing the location of new development in the development planning process; and • Incorporate flood risk assessment into the process of making decisions on planning applications and planning appeals. Policies for Flood Risk & Protection Policy 15 Implement ‘The Planning System and Flood Risk Management Guidelines for Planning Authorities’ 2009 (DEHLG & OPW), and any future reports in relation to flood risk for Boyle or County Roscommon. Objectives for Flood Risk & Protection Objective 25 Require all significant development impacting on flood risk areas to provide a Flood Impact Assessment, to identify potential loss of floodplain storage and how it would be offset in order to minimise impact on the river flood regime. Objective 26 Ensure all large scale developments provide ‘Sustainable Urban Drainage Systems (SUDS) as part of their development proposals. Objective 27 Within the Boyle LAP area, RCC shall; • avoid inappropriate development in areas at risk of flooding; and • avoid new developments increasing flood risk to buildings, including that which may arise from surface run-off. 3.5 WASTEWATER SERVICES 3.5.1 Existing Context In addition to drinking water treatment and distribution, Local Authorities are also responsible for waste-water collection/disposal and storm-water management, including collection and disposal. The drainage system whether separate or combined collects foul sewerage, industrial effluent and rainwater, all of which must be discharged or treated whilst minimising flood risk or environmental impacts. The development and expansion of the County’s wastewater and surface water drainage system is essential to the future sustainable development of the County and to the improvement of water quality within and adjoining Roscommon. The Boyle wastewater network was extended under the Mocmoyne Serviced Land Initiative during 2008 to service lands in the Mocmoyne area on the western end of Boyle town. (See Maps 4a & 4b) The Boyle Waste Water Treatment Plant (WWTP) is designed to achieve an effluent of BOD5 = 25 mg/l, suspended solids = 35 mg/l and phosphorous = 2mg/l. However, the treated effluent is currently meeting the required parameters, as set out in the April 2010 discharge licence of BOD5 = 15mg/l, suspended solids = 25mg/l and phosphorous = 2mg/1. The plant is designed to provide Secondary treatment with phosphate removal, sludge thickening and dewatering for a population equivalent (PE) of 6,000. It is located approximately 1km northeast of Boyle town. The primary discharge from the area is located approximately 23 meters east of the treatment plant and discharges to the River Boyle, a tributary of the River Shannon. There are no secondary discharges from the area. The plant can be increased to an ultimate design population equivalent of approximately 9,000 within the current site. Therefore, it is considered that the wastewater treatment and disposal network has sufficient capacity for the LAP period. In 2001, upgrade works to the collection system and wastewater plant were completed. The upgrade included the following. ‣ Some previously unserviced areas were provided with new foul sewers. Some of the existing foul sewers have been revamped. ‣ The treatment plant has been upgraded to include screening and grit removal, stormwater Boyle Local Area Plan 2012-2018 Page 30
PART II: DEVELOPMENT STRATEGY 2012-2018 & BEYOND Chapter 3: Infrastructure & Services tank, extended aeration, final sedimentation, sludge de-watering and removal. ‣ Aeration basin designed with ferric sulphate dosing to achieve enhanced biological phosphate removal in the anaerobic zone. The upgrade also included phosphate removal. This was added to the treatment process to comply with Phosphorus Regulations (S.I. No. of 258 of 1998), Urban Waste Water Treatment Directives. Additional works at the WWTP include chemical dosing facilities such as Ferric Sulphate (Phosphate removal) and polyelectrolyte (Sludge dewatering). These additional treatment processes at the WWTP have improved the standards of emissions to the aquatic environment and comply with the objectives of the Water Framework Directive. The plant is currently working satisfactorily and the only works required will be those necessary to achieve the discharge parameters. As mentioned previously, the Environmental Protection Agency granted RCC a Waste Water Discharge Licence for the Boyle WWTP in April 2010. Whilst not included on the 2010-2012 Water Services Investment Programme RCC has included the Roscommon Sludge Reception Centre in its current Assessment of Needs. This will ultimately receive and treat sludge from the Boyle WWTP. In terms of Capital Projects the Plan provides for a Sludge Reception and Treatment Facility at Roscommon Sewerage Treatment Works and also for sludge reception centres as required throughout the county. With regard to the environment, the Boyle WWTP is not located within an environmentally designated site and discharges to the River Boyle, which is not environmentally designated either. However, the Boyle River is a tributary of the River Shannon, which flows into Lough Ree. The Shannon Catchment, which is made up of a number of environmentally designated sites including Lough Ree, is environmentally designated. Recent effluent analysis indicates that the Boyle WWTP is performing in a satisfactory manner and providing an effluent that complies with the WWDL as granted by the EPA in April 2010 and it can be reasonably concluded that the operation of WWTP will not have a significant effect on any of the designated sites downstream of Boyle. Surface Water The existing surface water network in Boyle is inadequate in a number of areas, for example south of the railway line, amongst others. There are currently no schemes for the upgrading of the surface water network in Boyle town included in Roscommon County Council’s Assessment of Needs or in the Roscommon Water Services Investment Programme. The existing surface-water sewer network in Boyle consists of a combination of old stone culverts and piped network (taking road gully runoff) and storm water collection channels, combined with the sections of surface water network installed during 1999. All surface water network flows within Boyle Town are ultimately discharged into the Boyle River. The Waste Water Discharge Licence for the Boyle area authorises the discharge of waste water from the WWTP which services an agglomeration which is similar in extent to the development envelope. The licence granted includes the surface water network. The licence states that the Environmental Protection Agency is satisfied that subject to compliance with the conditions of the licence, any discharges from the agglomeration served by the waste water works will comply with and will not contravene any of the requirements of Regulation 6 of the Waste Water Discharge (Authorisation) Regulations, 2007. RCC is continuously working to comply with the conditions of the licence, which includes the implementation of the programme of improvements under condition 5. 3.5.2 Wastewater Services Strategy The Wastewater Services Strategy aims to; • ensure that there are adequate services and infrastructure associated with the wastewater collection, treatment and disposal for the current and future development envelope • ensure that the network and its provision is efficient, cost effective, environmentally appropriate and that it protects public health • wherever practicable, services and infrastructure should be delivered in an integrated manner prior to the development of areas Policies for Wastewater Collection & Treatment Policy 16 Facilitate the provision of an adequate wastewater collection, treatment and disposal system for the Boyle LAP area to serve existing and future populations in accordance with the Water Framework Directive 2000, and EU Urban Wastewater Directive and in accordance with the EPA Discharge License. Policy 17 Ensure that all new developments have and are provided with satisfactory drainage systems in the interests of public health and to avoid the pollution of the ground and surface waters. Boyle Local Area Plan 2012-2018 Page 31
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boyle local area plan 2012 - 2018 - Roscommon County Council

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