George Leslie Ltd

Key Facts

  • Client: Scottish Water
  • Engineer: AECOM
  • Conditions of contract: NEC Option C
  • Contract value: £620,000
  • Duration of works: Nov 2014 - March 2015

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Wastewater Pipelines, Tunnels & Shafts

Broomhill Avenue – Flood Alleviation

This Design & Build project involved upgrading the existing combined sewer network with on-line attenuation to reduce the risk of sewer flooding of properties on Broomhill Avenue, Aberdeen.

The work involved the installation of approximately 220m of online attenuation pipework varying in size from 225mm to 1.2m diameter, up to 5m deep in difficult ground conditions, along busy residential roads.

It was important to maintain access for local residents throughout the course of the work on site, which involved extensive and complex traffic management arrangements.

Careful working and a proactive & pragmatic approach to design modifications were necessary to overcome the complex and congested nature of existing utility services and obstructions encountered throughout the site. In addition, flows had to be maintained through the sewer system which had to remain live throughout the duration of the works.

Close liaison was maintained with community representatives, the local council and other members of the project team, throughout, to ensure a fully compliant project was delivered with all specified requirements, whilst minimising any community disturbance and inconvenience.

GL’s close Client liaison and Project Team proficiency managed design modifications to avoid costly utility diversions and potential programme over-runs.


News updates


The overall project involves the off-site fabrication and installation of a new linkspan structure at Oban Ferry Terminal for client Caledonian Maritime Assets Ltd (CMal).

12th February 2019

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GL return to the Sound of Kerrera

GL making a return visit to the Sound of Kerrera off Oban, to undertake substantial repairs to the breakwater which suffered collision damage following an altercation with a workboat earlier this year.

14th December 2018

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Polmadie Bridge official opening……..

Michael Matheson MSP and Cabinet Secretary for Transport, Infrastructure and Connectivity covered all his portfolios at the official opening of the new Polmadie Footbridge giving pedestrian and cycle transport access,

18th September 2018

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George Leslie Ltd, Blackbyres Road, Barrhead, Glasgow, G78 1DU  |  |  +44 (0)141 881 9131