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    Remediation works clean up in Cardiff

    Site contamination at ground or groundwater level is immensely difficult to remediate. Light non-aqueous phase liquid (LNAPL), a toxic mixture of petroleum hydrocarbon liquids and water, will infiltrate through soil and only stop when it encounters a barrier that can store the yield. However, it may move laterally as a continuous, free-phase layer, which can make clean-up almost impossible.

    In Cardiff, South Wales, an oil terminal suffered a major tank failure that resulted in about 20,000 L of petroleum hydrocarbons gushing into the groundwater beneath the site. Remediation expert RemedX, an RSK company, was tasked with containing the contaminated plume and preventing it from entering controlled waters near the site.

    To deliver optimal solutions for the client, the team ascertained the level of contamination and created a remediation strategy before carrying out a tidal assessment and a pilot study. Using the data, the team designed an LNAPL skimming system to operate 24/7, installed 28 wells close to the failed tank for groundwater monitoring and began remediation testing and skimming.

    Specialist teams stored recovered petroleum in double-bunded product tanks in a secure location. The LNAPL recovery rate dropped from about 108 L per month immediately after the spill to an average of 7 L per month less than two years later. Consequently, the team switched off the skimming system and installed passive skimmers to continue shrinking the plume. Since the system has been operational, 650 L of LNAPL has been recovered. The project is ongoing.

    • Location: United Kingdom
    • Project status: Completed
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    πŸ₯³ #RSKgroup company RSK Biocensus is delighted to have been named Large Consultancy of the Year at the 2022 Chartered Institute of Ecology and Environmental Management (CIEEM) Awards.

    πŸ† The awards aim to celebrate the outstanding work of ecologists and environmental managers who work to protect and enhance the natural environment, and are the highest honour an ecological consultancy can receive.

    πŸ‘ Well done RSK Biocensus! Find out more following the link in bio now

    #rskfamily #sustainablebusiness

    πŸ“£ We are SO excited for the launch of the new kit for @cafcofficial with #RSKgroup as the official front of shirt sponsor

    ⚽ A retro-inspired design with the classic Charlton Red with RSK #spotted on the front

    πŸ‘ "We Are One Club! A big thank you to all those members of the Charlton family who came together to help launch our 22/23 Castore home kit" - Charlton Athletic Football Club

    #cafc #rskfamily #football #sponsor

    πŸ“Έ #selfiesonsite 🀳

    Ryan Dunderdale, Senior Surveyor at Central Alliance, providing technical support and on-site training to datum plate install teams down in Bristol.

    Want to join our team? View our latest opportunities πŸ‘‰

    #RSKgroup #behindthescenes #meettheteam #RSKfamily #RSKonsite #engineering #construction

    🌟 In the June edition of our #employeespotlight, we spoke with with Rosie Pearce at Stephenson Halliday and Carmen Snowdon at WRc Group to find out about their recent achievements πŸ†

    πŸ‘ Congratulations to you both!

    Click the link in our bio to find out more!

    #rskfamily #employeeapprecitation #team #landscapeinstitute #instituteofwater #architecture

    "If you don’t feel valued, represented and respected in your workplace, then inevitably your #wellbeing will suffer.”

    πŸ“Œ In our latest edition of #ADayInTheLife, we spoke with Ellen Lapworth-Maisey, Wellbeing, #Equality, Diversity and Inclusion Manager at RSK – a fascinating position that helps to create an inclusive and empowering #culture for all RSK staff.

    Click the link in bio to learn more!

    #RSKGroup #RSKfamily #diversity #inclusion #mentalhealth

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