George Leslie Ltd

Key Facts

  • Client: Scottish Water Solutions
  • Engineer: AECOM
  • Conditions of contract: NEC3 Option C
  • Contract value: £1,800,000
  • Duration of works: October 2009 – June 2010 (31 weeks)

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Wastewater Treatment Works

Newton Stewart PS

On completion of the new wastewater treatment facilities for the area, the original Newton Stewart Wastewater Treatment Works had itself previously been converted into a pumping station to transfer wastewater flows to the new works at Minigaff.

This project was to resolve the problems associated with insufficient capacity within the pumping station which had led to excessive spills during storm conditions, the main elements of which were:

  • The construction of a new, enlarged, 5m x 6m x 4.5m deep storm overflow chamber, complete with side overflow weir and 6mm storm screens
  • Modification to the existing RC transfer and storm pumping chamber to accommodate larger pumps
  •  The conversion of disused primary tanks into new storm tanks
  • The installation of new 500mm diam pipework within the modified, 5m deep storm pumpwell shaft
  • Installation of new access bridges to the storm tanks including crane gantry for pump removal
    Modifications to MCC, control systems, service ducting

The work also included the provision of hardstanding accesses and HGV turning areas.

The contract was undertaken under an NEC Option C, Design & Build contract, with AECOM as design partners.

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