# The Cambridge Waste Water Treatment Plant Relocation Order 2025, Part 6: FINAL SETTLEMENT TANKS (WORK No. 11)


(1) Item
(2) Maximum design parameter
Finished ground level (+ or – 0.5m)
9m AOD
Configuration of individual final settlement tanks
8 No. circular tanks each with a 39m diameter
Depth
4m AOD (5m below FGL)
Foundations
Piles to a depth of -16m AOD (25m below FGL)
Height
18m AOD (9m above FGL)
Return activated sludge/surplus activated sludge pumps
18 No.
Overall footprint of final settlement tanks including combined return activated sludge/surplus activated sludge pumping station
130m x 225m

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Source: https://www.legislation.gov.uk/uksi/2025/452/schedule/14/part/6 (the official version)
Page: https://openlegislation.uk/cambridge-waste-water-treatment-plant-relocation-order-2025/schedule-14/part-6
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.