Contaminated Land​

Specialist consultancy services across the UK in contaminated land assessment, ground engineering, waste management and construction phase monitoring.

Tweedie Evans Consulting Limited are an established consultancy with a strong track record of working in partnership with our clients to provide creative and cost effective solutions to some of the most challenging development sites.​

  • Desk Study/ Preliminary Risk Assessments
  • Site Investigation

  • Laboratory Testing

  • Quantitative Risk Assessments (Human Health/ Controlled Waters)

  • Remedial Options Appraisals/ Remediation Strategies

  • Verification

  • UKWIR Site Assessment Reports

  • Expert Witness

Ground Investigation

  • Hand Augering/ Hand Digging
  • Foundation Exposures
  • Trial Pitting
  • Window/ Dynamic Sampling
  • Cable Percussive, Rotary, Sonic Drilling
  • Soil Infiltration/ Soakaway/ Percolation Testing
  • CBR/ Plate load testing
TEC | Contaminated Land Assessment, Ground Engineering, Waste Management & Construction Phase Monitoring
TEC | Contaminated Land Assessment, Ground Engineering, Waste Management & Construction Phase Monitoring
TEC | Waste Testing and Classification
TEC | Construction - Environmental Monitoring

Construction - Environmental Monitoring

  • Dust Monitoring
  • Vibration Monitoring
  • Landfill Monitoring
  • Environmental Permit Monitoring
  • Ground Gas/ Groundwater Monitoring

Waste Testing and Classification

  • WAC Testing
  • Waste Characterisation
  • Materials Management Plans
  • Qualified Person

Ground Engineering (Geotechnical Assessments)

  • Geotechnical Site Appraisals
  • Laboratory Testing
  • Foundations/ Floor Slabs
  • Soil and Rock Slope Stability
  • Settlement Analysis
  • Retaining Structures
  • Ground Improvement Techniques
  • Geological Impact Assessments
  • Subsidence Assessments
  • Soakaway Testing
  • Earthworks
  • Coal/ Metalliferous Mining Risk Assessments 
  • Soluble Rock Risk Assessments
  • Expert Witness 
TEC | Contaminated Land Assessment, Ground Engineering, Waste Management & Construction Phase Monitoring
TEC | Ground Engineering | Geotechnical Assessments
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TEC | Contaminated Land Assessment, Ground Engineering, Waste Management & Construction Phase Monitoring

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Recent projects

TEC | Contaminated Land Assessment, Ground Engineering, Waste Management & Construction Phase Monitoring
Our Projects TEC | Contaminated Land Assessment, Ground Engineering, Waste Management & Construction Phase Monitoring

Dunraven Street, Tonypandy

TEC have been assisting Rhondda Housing Association (RHA) in their plans for the regeneration of the disused former Co-op supermarket site on Dunraven Street, Tonypandy. The building has stood empty since the store closed down in 2012. The impressive plans include redevelopment to provide commercial units and leisure space as well as co-working facilities, affordable homes and a new head office hub for the RHA.  The site has a complex coal mining legacy including on-site mine shafts and shallow worked coal seams. Without the desk study research and ground investigation works completed by TEC, these issues may only have been discovered late in the construction programme causing potentially significant delays and cost implications, together with difficulties in obtaining regulatory sign-off for the scheme. TEC have undertaken considerable research and ground investigation at the site (with a little help from our drilling friends over at Apex Drilling Services, who are no strangers to drilling over mine shafts in Wales). The works have been targeted on understanding the risks created by the historical coal mining, to allow for the design of appropriate mitigation measures and ensure the stability and safety of the proposed redevelopment.​

Our Projects TEC | Contaminated Land Assessment, Ground Engineering, Waste Management & Construction Phase Monitoring

Royal Arsenal Riverside, Woolwich

TEC have been working alongside Berkeley Home East Thames Ltd since 2015, providing geoenvironmental and geotechnical services to assist in the development of the Royal Arsenal site in Woolwich. Formerly one of the UK’s largest munitions factories and a coal fired power station, this major regeneration project is creating a new residential district in Woolwich with the construction of over 5,000 homes alongside new parks, leisure facilities and retail/ employment space. The history of the site has presented a number of geotechnical challenges and contamination issues along the way. TEC have worked alongside Berkely Home East Thames and all the design team on a number of phases of the development, from desk study all the way through to verification. Seeing the development progress over the years has made this project one of our most rewarding.

Our Projects TEC | Contaminated Land Assessment, Ground Engineering, Waste Management & Construction Phase Monitoring

Tatworth Road, Chard Somerset

Back in our beloved home county of Somerset, TEC have been undertaking ground investigation works on behalf of Summerfield Homes in support of plans for 94 new homes on the southern edge of Chard. Investigation and assessment works have focused on understanding the challenging and variable ground conditions across the site to provide the most cost effective and pragmatic substructure solutions. Sometimes the ground just does not behave how you think it should!

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TEC | Contaminated Land Assessment, Ground Engineering, Waste Management & Construction Phase Monitoring
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Our aim is to deliver client focused, cost effective and pragmatic solutions.

We are easy to work with, quick to respond and always on hand to offer advice and answers.​

Our aim is to deliver client focused, cost effective and pragmatic solutions. We are easy to work with, quick to respond and always on hand to offer advice and answers.​

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TEC | Contaminated Land Assessment, Ground Engineering, Waste Management & Construction Phase Monitoring

Our reputation provides confidence and distinguishes us from our competitors​

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TEC | Contaminated Land Assessment, Ground Engineering, Waste Management & Construction Phase Monitoring