Figure 10.
A diagram illustrates a system with connection tunnels, culverts, odour and ventilation features, and access covers, indicating maintenance responsibilities with colour coding.The diagram presents a detailed layout of a maintenance system, highlighting connection tunnels and a main tunnel, alongside culverts, valves, and outfall chambers. Notable elements include monitoring instruments and metalwork access points. The colour coding indicates maintenance responsibilities: green signifies operations by the Invoicing Party after system acceptance, while blue represents management by Thames Water post-acceptance. Sections include essential features for ventilation and drainage, along with indications for areas concerning the removal of blockages and accumulated material. The visual map presents these features in a structured format, facilitating navigation through various system components.

Tideway and Thames Water asset ownership split after system acceptance (©Thames Water). DWF, dry weather flow

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