It was celebrations all-round for a team from Glanville Environmental and South West Water recently.
This followed an announcement that a project they had worked on, that helped prevent a serious environmental problem, had been awarded a prestigious ‘Pure Award.’
Following a series of surveys and a number of repairs, it was clear that the sewer pipeline that ran into the picturesque Cornish seaside village of Porthleven was defective.
The damaged pipeline also had the potential to cause pollution, enter the watercourse and into the harbour area.
Given the urgency of the problem and the potential for disruption to businesses, residents and holidaymakers over the summer period, Glanville’s engineers proposed to install a temporary 500-metre overland pipe, until a permanent solution could be agreed with South West Water.
John Lambert (Project Engineer) at Glanville Environmental said, “This was a challenging and time-sensitive project that needed to be addressed immediately as there was a clear and present danger of a sewer spillage and the harbour becoming polluted.”
An additional problem the team encountered was the planned pipe ran alongside a river that was prone to flooding, which meant that measures had to be taken to maintain the Environmental Agency’s flood defence system.
This involved elevating the pipeline to ensure the flow of floodwater would run unimpeded. A steel bridge, supported by concrete pillars was constructed to support the elevated pipe.
High Density Plastic Pipe (HDP) was used for the project, with lengths joined using Electro-fusion welding.
This product is durable and very robust, ideally suited for this particular project, as the pipeline also ran alongside a busy road and was unprotected in places.
Helping ensure that disruption was kept to a minimum, all pipework and heavy plant was stored outside of the village, at the nearby South West Water treatment works. This avoided large vehicles blocking the road whilst work was in progress.
To avoid unnecessary disruption and to improve the flow of traffic coming in and out of the village, the on-site team manually operated the traffic management system at peak times.
To ensure that local businesses and residents were kept informed of the project, Customer Liaison Officers from Glanville Environmental and South West Water hand delivered letters explaining the situation.
The letters explained why the work was required, the start and end date, and who to contact, should the need arise. A map showing the location of the new pipeline was also included.
The officers also chatted with property owners and offered reassurance to local businesses that any disruption would be kept to a minimum.
Following the level of stakeholder engagement, feedback received from residents and local businesses was very positive.
Over the duration of the project, Glanville Environmental and South West Water did not receive any complaints from residents or businesses.
This is a testament to the meticulous planning and skills of the on-site team, and the stakeholder engagement activities conducted by both organisations.
James Goodman, Operations Manager at Glanville Environmental said, “I was delighted to hear that we had won this award. It really is a testament to the expertise and professionalism of our engineers and on-site teams, and showcases the multi-agency partnership approach we adopt to all of the projects we undertake.”
“The South West Water, Pure Awards, are much valued accolades within our industry and
recognise individuals or teams that have gone above and beyond their day-to-day roles to help our client, South West Water, achieve their vision.”
The action taken by the Glanville project team averted a potentially serious pollution problem, mitigated the business risk to South West Water, whilst minimising disruption to local businesses and residents.