Geo-environmental Engineers
jnpgroup provides a highly specialised geotechnical and environmental service to a diverse range of clients in the construction industry. The growing requirement to preserve and enhance our environment is increasingly driving the need for the development of flexible and innovative approaches and solutions in response to this challenge.
Contaminated Land
Contaminated land may present a hazard to the environment and or human health. We are committed to providing cost effective solutions to the remediation of contaminated land prior to development. Faced with ever changing legislation, clients increasingly rely on our expertise to minimise risk and provide robust and cost effective solutions to their development problems.
Whether you are a landowner, a construction company, a property developer or financial institution jnpgroup has the expertise to turn sites viewed as potential liabilities into commercial assets;
jnpgroup offer the following services in contaminated land and landfill:-
- Walkover Surveys and Desk Top Studies
- Site Investigations for Geotechnical Design and Land Quality
- Due Diligence Reporting
- Human Health and Controlled Waters Quantitative Risk Assessment
- Land Remediation Schemes and Validation
- Environmental Impact Assessment
- Hydrogeological Assessments
- Waste classification of soils
- Site Waste Management Plans
- Ground Gas Assessment
- Japanese Knotweed identification and management of treatment options
We recognise that contaminated land reclamation is much more than the remediation of contaminated soil and water, and so our team is skilled in a wide range of other services, including hydrogeology, sustainable urban drainage systems, infrastructure, flooding, noise reduction, air quality, structural engineering and roads and sewers design.
Remediation Strategies
Following the identification of significant pollutant linkages on a contaminated land site, a remediation strategy needs to be agreed with the Environment Agency, the Local Authority and the NHBC. jnpgroup develops Remediation Strategies in conjunction with the client, knowledge of the site and site constraints. Remediation strategies for soils and groundwater are developed.
Examples of remediation strategies developed, implemented and validated by jnpgroup in 2008 include:-
- Bioremediation of soils contaminated with volatile organic compounds, Paint Factory, Birmingham.
- Design and installation of a landfill gas venting trench, Waterstone Park, Dartford.
Landfill Gas Venting Trench, Waterstone Park, Dartford
- Design and validation of an engineered capping layer, Horton Hospital, Epsom.
- Underground tank removal and validation, former petrol station, Uxbridge.
- Removal of gasholders and tars, Former Gas Works, Buckingham Town Centre.
Geotechnical Services
jnpgroup have experience of undertaking geotechnical appraisals for a wide range of development types on both greenfield and brownfield sites. Our specialists have experience in the following disciplines:-
- Foundation design and analysis
- Slope stability appraisal and analysis
- Retaining wall design
- Earthworks design and specification
- Ground improvement design
- In Situ CBR testing and interpretation
- Soakaway testing
- Testing for the recycling of aggregates
Landfill Gas Venting Trench, Waterstone Park, Dartford
Site Waste Management Plans (SWMP)
From the 6th April 2008, a site waste management plan will be required for all new construction projects worth more than £300,000. Their implementation aims to reduce the quantity of construction waste that is sent to landfill and also to reduce fly tipping. The types and quantities of waste that will be produced are identified and a strategy to recycle these is formulated.
The SWMP’s must include all wastes from a construction site, not just soils. On the majority of construction projects jnpgroup advise our clients on maximum resource efficiency of site derived soils and hence we are in a unique position to take overall responsibility for the SWMP.
For further information on our wide range of Environmental and Geotechnical services please contact
Jim Twaddle, Associate on jim.twaddle@jnpgroup.co.uk or on 01926 889955.
