Technical Expertise

Multidisciplinary teams comprising of specialists across ten industry sectors, we have the expertise necessary to grapple with challenging assignments.

View all sectors


Commitment to Clients

Our business is built on relationships, and our clients will always be our top priority.

View all Projects

Featured Project

Silvertown Tunnel London UK

Silvertown Tunnel
One of the largest engineering projects in the world.

learn more

Who We Are

International Award-Winning Engineering Consultants who deliver ground breaking solutions at the forefront of industry best practice.

learn more

Our Regions

Carbon Reduction Plan

About - office locations image

Our Commitment to Net Zero
Ayesa is committed to becoming a net zero engineering consultancy by 2040

learn more

Stay Up-to-date

Stay on top of the latest developments, appointments, awards and more across all our offices.

View all News

Featured News

MicrosoftTeams-image (76)

On 19th October 2023, ByrneLooby will rebrand to Ayesa

ByrneLooby will officially adopt the name of its parent company, Ayesa, a global engineering and technology services provider.

Learn more

Investing In Our People

Cultivating a culture in which individual differences and the contributions of our staff are recognised and valued.

meet our people

Our EDI Policy

Careers - Image

Celebrating People
Fostering a culture where you are encouraged to be yourself.

learn more

International Presence

Multidisciplinary team comprising of specialists across Ireland, UK and the Middle East.

Follow us:

  • LinkedIn - blue70px
  • Twitter - blue70px
  • Facebook - blue70px
  • Instagram - blue70px
  • Vimeo - blue70px
  • Issuu - blue70px


Contact Us

We would love to hear from you. Please fill in the quick contact form below.

Send a message

Grangemouth Remediation of a Former Chemical Works

Grangemouth Remediation of a Former Chemical Works

Ayesa was commissioned to carry out a site investigation and the remediation of a 2-hectare site in Grangemouth, which is being redeveloped as a new waste to energy facility. Our team prepared and implemented a remediation strategy, verified the works and secured regulatory approval. The site characterisation investigations commenced in 2017 on disused land within an active chemical works site. This identified an area as being heavily contaminated by petroleum hydrocarbons, VOCs and SVOCs including DNAPL. The second phase of investigations in 2018 further characterised the site, enabling a detailed quantitative risk assessment to be undertaken and a remediation strategy to be produced.

Grangemouth Remediation of a Former Chemical Works

Our Role

Following regulatory approval of the remediation strategy, Ayesa was contracted to carry out the remediation works, which commenced in January 2019. This included the drilling of 355 remediation wells and a further 12 groundwater verification monitoring boreholes. On completion of the drilling works, Dual Phase Vapour Extraction was undertaken to remove 84,000L of groundwater and volatile / semi-volatile organic compounds from the remediation wells. The extracted organic compounds were treated with a GAC filter system and the liquids disposed of off-site. Extraction was carried out over a 9-week period after which 800 doses of Chemox solution were injected into the remediation wells. Verification of the remediation works comprised baseline and post-completion groundwater monitoring, and the calculation of source mass removal through groundwater/vapour extraction and chemical destruction by Chemox. The remediation works resulted in the betterment of the groundwater conditions. The period from commencing installation of 355 remedial wells to gain regulatory sign off was only 17.5 weeks.

Our Role

We support your projects

Our goal is to provide you with the best services for your needs