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  • Home
  • Services
    • Planning Services
      • Subdivision
        • Subdivision Process
        • Subdivision Cost
        • Rules for Subdivision
        • Subdividing Land Auckland
        • Cross lease property to freehold conversion
        • Subdivision Terminology
        • Subdivision Resources
      • Developments Made Easy Service
      • Feasibility Reports
      • Resource Consents
      • Landscape and Visual Assessments
      • Enforcement Services
      • Third Party Liaison
      • Evidence for Hearings
      • Notice of Requirement
      • Plan Changes and Submissions
    • Surveying
      • Subdivision Survey
      • Boundary Redefinition Survey
      • Topographical Survey
      • Set Out Survey
      • Land Surveyors Auckland
      • Cross lease property to freehold conversion
    • Civil Engineering
      • Earthworks Engineering
      • Roading Engineering
      • Three Waters Engineering
      • Stormwater Engineering
      • Flood Engineering
      • Water Loss Engineering
      • Stream Assessments
      • Construction Monitoring
    • Property Negotiations
    • Project Management
    • Asbestos Surveying
    • Landscape Architecture
      • Landscape and Developments
      • Landscape and Visual Assessments
      • Landscape Plan Sets
      • Open Space Design
    • Ecology
      • Ecological Assessments
      • Restoration and Environmental Management Plans
      • Restoration Project Management
      • Stream and Wetland Assessments
    • Soil and Water
      • Site Investigation
      • Remediation and Management
      • Asbestos in Soil
      • Instant Soil Test Service
      • Instant Soil Test – Expanded Information
      • Other Services
  • Why Us?
  • About
    • About Us
    • What Our Clients Say
    • Our Leadership Team
    • Community Involvement
    • Sustainability
    • COVID-19 and our services
  • Projects
  • News
  • Careers
  • Contact
  • 中文

Category Archives: Site Contamination

Thomas Consultants PSI and DSI services- Soil Testing

What is a contaminated site?

Blog, Site Contamination, Soil and WaterBy Sarah WaldenAugust 17, 2021

Written by Sam Woolley, Team Leader Soils & Ecology What is a contaminated site? Land is contaminated when hazardous substances such as heavy metals and pesticides (including DDT, dieldrin, lead and arsenic) are found in the soil in concentrations above naturally occurring soil levels. You can find a detailed list of hazardous substances listed on…

land contamination - subdivision

Land Contamination Investigations – PSI or DSI?

Blog, Site Contamination, Soil and WaterBy Thomas Consultants LtdOctober 26, 2018

Have you recently been informed by Council that your land may be contaminated and requires further investigations? You may have heard the terms PSI’s and DSI’s thrown about but unsure what they mean? Well look no further – here we break down what the investigations are all about and help you determine which one is right for you.

Instant Soil Testing Service Thomas Consultants

What Should You Know About Pre-Purchase Soil Sampling?

Blog, Site Contamination, Soil and WaterBy Thomas Consultants LtdMay 7, 2018

Collection and analysis of soil samples from a property prior to purchase is becoming routine but how reliable are these pre-purchase assessments? A common misconception is that a reasonable assessment regarding the contamination status of a property can be done with just a couple of samples.

Want to remove orchards, vineyards or growing houses?

Blog, Site Contamination, Soil and WaterBy Thomas Consultants LtdApril 12, 2018

Are you looking at developing your property? Have you had orchards, vineyards, market gardens or growing houses on your property?
There are a few ways that you can get caught out when applying for subdivision consent if you have had any horticultural practices on your land.

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