Environmental Audit8 min read16 October 2026

A factory can look operationally attractive while carrying environmental liabilities that are not visible in the production numbers. Expired consents, unclosed notices, contaminated soil, an undersized ETP or undocumented waste disposal can affect transaction value, expansion plans and operating continuity.

Environmental due diligence before a factory acquisition should translate documents and site evidence into clear deal risks, required actions and cost ranges. It is not the same as a routine compliance checklist.

Review the future operation, not only the past: a site that is compliant at its present capacity may still be unsuitable for the buyer's proposed product, fuel, water demand or expansion.

1. Define transaction scope and intended use

Clarify whether the deal is an asset purchase, company acquisition, lease or brownfield expansion. List the products, capacity, utilities and chemicals the buyer plans to use. This determines which approvals and technical capacities must be tested.

2. Build the approval register

Review Consent to Establish, Consent to Operate, environmental clearance where applicable, hazardous waste authorisation and other environmental permissions. Compare approved products, quantities, water, effluent, fuel, stacks and waste with actual operations. Record validity, conditions, bank guarantees, notices and pending applications.

3. Test treatment and monitoring evidence

Inspect ETP, STP, air-pollution controls, storage areas and monitoring points. Compare design capacity with actual and proposed peak loads. Review recent laboratory results, calibration records, breakdowns and bypass risks. Repeated results just inside a limit may signal little capacity for growth.

4. Screen land and legacy liabilities

Walk the site for stained soil, buried waste, abandoned tanks, old lagoons and drainage pathways. Review historical layouts, waste areas and neighbouring sensitive receptors. Where risk indicators exist, define a proportionate sampling plan instead of declaring the site clean from documents alone.

5. Reconcile waste and vendor records

Match generation records, storage inventory, manifests, weighment and receiver evidence. Verify that transporters and receiving facilities were authorised for the relevant waste. Identify orphan drums, expired chemicals and decommissioning obligations.

6. Convert findings into deal actions

Classify findings as conditions precedent, short-term operational actions or longer-term capital improvements. Assign an owner, indicative cost and evidence needed for closure. Material uncertainties may require indemnity, escrow, price adjustment or a more detailed investigation by the buyer's legal and technical advisers.

Minimum due diligence evidence

  • Approvals register and condition compliance status.
  • Regulatory notices, correspondence and closure evidence.
  • Water, effluent, emission and waste mass balance.
  • Monitoring data, calibration and treatment operating records.
  • Site walkover photographs and risk map.
  • Costed corrective-action plan aligned with intended use.

For a structured review, see our environmental audit and due diligence service and consent support.

Frequently Asked Questions

Is a valid CTO enough to complete due diligence?

No. A valid CTO is important, but the audit must also test actual compliance, liabilities, treatment capacity and compatibility with the buyer's intended operation.

Should every site have soil and groundwater sampling?

Sampling should be risk-based. Historical use, storage, spills, visual indicators and hydrogeology help define whether intrusive investigation is warranted.

Can the seller's compliance report be relied on?

It is useful evidence, but the buyer should independently verify material statements and close data gaps before relying on them for the transaction.

Planning an industrial acquisition or lease?

Ujjwal Engineers can perform a focused environmental compliance and liability review before transaction close.

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