Site Area: Former Convent Grounds, Newry
Scope of Works: Invasive Plant Removal & Remediation
Background
Redevelopment of the St Clare’s Convent site in Newry was complicated by a sizeable infestation of Giant Knotweed. The invasive species posed a major risk to construction, as well as long-term land management, requiring a robust and sustainable remediation strategy.
PWS was appointed to design and deliver a phased remediation programme, ensuring compliance and providing long-term protection against regrowth.
Our Approach
PWS implemented a controlled excavation and treatment programme tailored to the unique challenges of the site.
Key actions included:
- Phased Excavation: Careful, supervised excavation of Giant Knotweed plants and rhizome structures to minimise spread and risk of re-establishment.
- Subsoil Treatment: Innovative on-site treatment of contaminated subsoils, enabling materials to be safely reused on site rather than requiring expensive transport and disposal.
- Compliance & Oversight: Works were carried out under strict supervision by PWS in line with best practice and regulatory guidance.
- Validation Report: This was issued to the client on completion, confirming the success of remediation.
- Warranty: A 3-year warranty was provided, offering assurance against regrowth and long-term confidence in the site’s suitability for development.
Outcomes
- Successful Eradication: Giant Knotweed infestation removed, with long-term risk managed.
- Cost Savings: Treatment and reuse of subsoils avoided the need for expensive off-site disposal.
- Regulatory Assurance: Validation reporting confirmed compliance, supporting future development approvals and addressing Planning Department requirements.
- Client Confidence: Warranty provided peace of mind and assurance of remediation success.
Conclusion
The St Clare’s Convent project showcases PWS’s expertise in specialist invasive plant remediation. By combining phased excavation, innovative soil treatment, and long-term warranty support, PWS delivered a cost-effective and sustainable solution, enabling redevelopment to proceed with confidence.
