Urban Pollution Management
The basic principles of the Urban Pollution Management (UPM) Manual are that the wastewater systems 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 and investigating and refining solutions to unsatisfactory intermittent discharges.
The UPM provides an iterative approach to delivering environmental improvements in a cost effective manner. The UPM provides tools for targeting investment to achieve the maximum environmental benefits.
Clear has delivered a number of cost effective UPM studies to assist in the delivery of Unsatisfactory Intermittent Discharge (UID) improvement schemes. These include Scunthorpe UIDs (Severn Trent Water), Hogsmill UPM (Thames Water) and Kettleburgh UPM (Anglian Water).
A key aspect of our approach is to balance the scope and complexity of the study against the potential benefits for solution refinement. In many cases, we have been able to demonstrate that, through an iterative approach to data collection and model refinements, it is possible to significantly reduce the overall scope and capital cost of UID schemes.
We have undertaken a range of UPM studies, from stand alone UID analyses using simplified modelling techniques, to more complicated modelling studies involving sewer quality sampling and verification. Clear has experience in the commissioning of sewer and river quality sampling surveys. Clear has undertaken studies using the InfoWorks UPM Tool, SIMPOL, bespoke in-house software, Infoworks RS and OpenMI.
Clear has extensive knowledge in the regulatory aspects of CSO discharges and receiving water quality, and has been involved in consenting negotiations with the EA in association with the water utilities.
Our staff have written a number of CSO modelling and river impact assessment specifications and guides, and has presented in-house training on behalf of water utilities.
