Remediation Action Plan (RAP)
A remediation action plan (RAP) sets out how a site's contamination is cleaned up to make it fit for use, with a validation report, before a CC or permit.
Ask Chalkline about this →A Remediation Action Plan (RAP) is the document that sets out how a site’s identified contamination will be cleaned up so the land is fit for its intended use (for a build, usually residential). It is prepared by an environmental consultant once site investigation has confirmed a problem, and it is the bridge between “this site is contaminated” and “this site can be built on”.
When you need one
A RAP comes after the assessment, not instead of it. The usual chain on a contaminated-land site:
- A Stage 1 (desktop) investigation flags a contaminating history.
- A Stage 2 (intrusive) investigation samples and tests, and compares results to the ASC NEPM investigation levels.
- If contaminants exceed the levels for the intended use, a RAP is prepared, setting out the remediation method (remove and dispose, treat in place, cap/contain, or a mix), the validation criteria, and the controls.
- Remediation is carried out, then a validation report confirms the clean-up achieved the standard.
RAP vs validation report
These two travel together and are easy to confuse:
- The RAP is the plan, what will be done, to what standard, before the work.
- The validation report is the proof, lab-tested evidence (NATA-accredited) that the remediation met the RAP’s criteria, after the work.
A council typically wants both: the RAP as a condition of consent, and the validation report before sign-off.
The approval gate
The RAP (and its validation) is commonly a hold point: it is required as a condition of the development consent, and the validation report is usually needed before a Construction Certificate or building permit issues. So an unresolved contamination finding stops the build until the RAP is done, executed, and validated, which is a real cost and time item, not a paperwork formality.
For a builder
- It is a sequence, not a single document. Assessment, then RAP, then remediation, then validation. Budget the lot, and the lead time.
- Validation is the one that unlocks the build. The RAP is the plan; the validation report is what lets the CC or permit issue. Do not assume the RAP alone clears the site.
- It is the consultant’s deliverable. A contaminated-land specialist writes the RAP and the validation; your job is to sequence it ahead of the works it conditions and keep the reports on file.
Also known as: RAP, remediation action plan, remedial action plan.
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See also
Last updated: 2026-05-26. Verified: 2026-05-26. Quarterly review for currency.