Intrusive investigation, sampling and monitoring to characterise contamination and support proportionate, regulator‑aligned remediation.
A Phase 2 Site Investigation provides the intrusive evidence required to confirm or refine the Preliminary Conceptual Risk Assessment (PCRA) developed during the Phase 1 Desk Study. It determines the presence, extent and behaviour of contamination in soils, made ground, groundwater and ground‑gas, and generates the data needed for quantitative risk assessment, remediation strategy development and planning approval.
Our investigations follow the Land Contamination Risk Management (LCRM) framework and are directly linked to the plausible pollutant linkages (PPLs) identified in the Phase 1. Each investigation is scoped to gather the specific lines of evidence needed to update the Conceptual Site Model (CSM) and support clear, defensible decision‑making.
A Phase 2 investigation typically includes:
A Phase 2 investigation is typically needed when:
Arthian’s Phase 2 investigations are designed to be:
Once intrusive investigation is complete, we update the CSM and determine whether risks are:
Where remediation is required, we prepare a regulator‑aligned remediation strategy:
Where geotechnical interpretation is needed, we integrate contaminated‑land and ground‑risk data:
Arthian’s contaminated‑land team supports organisations involved in planning, development and commercial property. Our Phase 1 Desk Studies are commissioned by architects, planning consultants, developers, contractors, commercial property owners, legal and conveyancing teams, and local authorities who need early clarity on contamination risk, planning requirements and programme implications.
For tailored guidance on how contaminated‑land risk affects different project types, explore our audience pages: Architects · Contractors · Solicitors · Local Authorities
Our Phase 2 investigations follow the current LCRM framework, which superseded CLR11. Many planning authorities still reference CLR11 in legacy conditions, and our reporting remains fully compliant with regulator expectations where this terminology appears. All intrusive works are directly tied to the PCRA, ensuring investigations are proportionate, targeted and defensible.
We’d love to hear from you – whether you have a question, a project in mind, want to explore job opportunities, or just want to say hello.
