The basic principles of the Urban Pollution Management (UPM) Manual are that the wastewater system should be considered as a single entity comprising of the sewerage system, sewage treatment facilities and the receiving waters. Changes to any part of the catchment can have beneficial or detrimental impacts on the whole system and all parts must be considered. The UPM approach is underpinned by recognised Environmental Standards and thus the environmental impact of existing and proposed systems can be analysed. Clear has a high level of expertise in water quality modelling, sediment transport modelling, UPM studies and integrated catchment modelling. Clear staff have extensive experience in water quality modelling and river impact assessments including investigating and refining solutions to unsatisfactory intermittent discharges.

Clear has delivered a number of cost effective UPM studies to assist in the delivery of UID improvement schemes. A key aspect of our approach is to balance the scope and complexity of the study against the potential benefits for solution refinement. In some cases, we have been able to demonstrate that, through an iterative approach to data collection and model refinements, it was possible to significantly reduce the overall scope and capital cost of UID schemes.