Technical due diligence If there are known or suspected non-compliance or land contamination concerns, the buyer or ideally its lawyers might instruct an environmental consultancy firm to undertake a phase 1 environmental, health and safety (EHS) compliance audit or intrusive phase 2 testing to assess the liability and financial risks. Types of environmental audits A summary of the different types of environmental audits is set out below. Type of report What is covered Typical price (exc VAT) Timescale Desktop search Historic usesLandfillsEnvironmental permitsPollution incidentsGround stabilityFlooding Contaminated land risk screening report £180 Combined contaminated land and flooding search £270–£320 1–3 days Basic phase 1 audit Desktop searchSite walk overManagement interviewRegulator replies £1,000–£2,000 5–10 days Detailed phase 1 environmental, EHS audit As phase 1 plus:Review of reportsReview of operational controls and systemsKey health and safety compliance issuesAssessment of capex investment £2,500–£4,000 5–10 days Asbestos survey Management Asbestos SurveyDemolition or Refurbishment SurveyAsbestos register £2,000–£5,000 5–10 days Phase 2 report Intrusive testingSoil,