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Decision making processName of the case study Decision making process - stages Decision making process - levels Decision making process - sources of information Decision making process - who are the decision makers Decision making process - who made the final decision for project implementation Name of tool Decision making process - tools in decision-making process The tools were the deciding factor for the number and location of the sewage treatment works. The tools were designed to incorporate requirements such as the need to have the site close to the existing sewage infrastructure (to avoid the need for pumping) and the need to have a suitable watercourse for discharge of treated effluent. Thus the assessment gave lower rankings to sites which required extensive pumping to transfer flows to the new plant and also to transfer flows back to a suitable point of discharge. Name of tool Decision making process - tools in decision-making process The site chosen was both adjacent to the existing sewage infrastructure and a suitable watercourse was available for discharge. The watercourse is of high environmental sensitivity and thus the treatment plant chosen (Membrane Biological Reactor) produces a high quality effluent but at significantly higher power consumption than other process which produce lower quality effluent. The Environment Agency gave an indication of the level of treatment they would expect for a discharge into the watercourse (quantitative benchmark). The study therefore had to consider treatment processes which could achieve this level. Information on the potential levels of treatment for different types of process was obtained from the process plant suppliers. The tool was used in order to support arguments regarding the development. Decision making process - how was the information for the dmp disseminated Consultation with Nefyn Community Council revealed that a site on agricultural land east of Edern was selected as the preferred option as it is close to the existing sewerage system, has potential easy access from the main road and is outside the Area of Outstanding Natural Beauty. Decision making process - how was the public involved Decision making process - was there public discussion over the project What tools were used to assess sustainability? Welsh Water Treatment Works Site Selection Matrix More information |