Phase 1 Geo-environmental Desk Studies
The Phase I Desk Study and site walkover are the first stage assessments of land affected by contamination. It is often prepared for submission with planning applications or for permission to develop contaminated land. A desk study may be required by warrantors such as the NHBC.
The objective is to see if there are any potential routes or links between contaminated sources which may impact on environmental receptors. These pollution linkages are presented in a preliminary site conceptual model.
Our Phase 1 Desk Studies are in line with current industry best practice to make them acceptable to regulatory authorities. They cover:
· Site walkover surveys
· Historical use of the site
· Environmental setting
· Industrial and regulatory setting
· Conceptual Site Model
· Recommendations
The objective is to see if there are any potential routes or links between contaminated sources which may impact on environmental receptors. These pollution linkages are presented in a preliminary site conceptual model.
Our Phase 1 Desk Studies are in line with current industry best practice to make them acceptable to regulatory authorities. They cover:
· Site walkover surveys
· Historical use of the site
· Environmental setting
· Industrial and regulatory setting
· Conceptual Site Model
· Recommendations
Phase 2 Intrusive Site Investigation
Brown 2 Green Associates are able to provide clients with a comprehensive and high quality site investigation service. To ensure clients receive the best value for money from investigations, the design is focussed towards the project outcome. With extensive knowledge of investigation, sampling and laboratory analysis the appropriate techniques to satisfy the objective of the investigation are adopted.
The design of the investigation is based on the findings of the Desk Study and Conceptual Site Model. The designer determines sample locations, access constraints, risk to groundwater, accreditation and detection limits. From our data we are able to complete high quality risk assessments and remedial designs.
Brown 2 Green staff have experience in investigating a wide range of contaminated land such as gas works, foundries, tanneries and petrol filling stations. We use a wide range of non-intrusive and intrusive investigation techniques. Techniques such as trial pitting and drilling rigs may be used for the collection of soil, groundwater and gas samples. We work in accordance with quality control procedures and ensure cross contamination of samples does not occur. The latest sampling techniques are adopted to ensure the samples represent site conditions. We use accredited laboratories for analysis.
If required Brown 2 Green Associates can undertake site investigations for foundation design in tandem with investigations for contaminated land. This gives a better overview of the site conditions and allows us to understand links between geotechnical and contaminated land constraints. It is also results in cost saving for the client.
The design of the investigation is based on the findings of the Desk Study and Conceptual Site Model. The designer determines sample locations, access constraints, risk to groundwater, accreditation and detection limits. From our data we are able to complete high quality risk assessments and remedial designs.
Brown 2 Green staff have experience in investigating a wide range of contaminated land such as gas works, foundries, tanneries and petrol filling stations. We use a wide range of non-intrusive and intrusive investigation techniques. Techniques such as trial pitting and drilling rigs may be used for the collection of soil, groundwater and gas samples. We work in accordance with quality control procedures and ensure cross contamination of samples does not occur. The latest sampling techniques are adopted to ensure the samples represent site conditions. We use accredited laboratories for analysis.
If required Brown 2 Green Associates can undertake site investigations for foundation design in tandem with investigations for contaminated land. This gives a better overview of the site conditions and allows us to understand links between geotechnical and contaminated land constraints. It is also results in cost saving for the client.
Detailed Quantatitive Risk Assessment
Risk Assessment will define the level of risk posed by the concentrations detected during the site investigation. From the Site Investigation data, Brown 2 Green Associates can complete Generic and Detailed Quantitative Risk Assessment.
Generic quantitative risk assessment compares the results from the site investigation with generically derived screening values to mitigate the risk to human health and environmental receptors. When values are exceeded risk assessment may be adopted to generate a model that reflects the conditions of the site. The more robust the model that is generated, the higher the screening values, with a greater potential for a reduction in the remediation required. A site with contamination does not always require remediation.
Brown 2 Green Associates can provide clients with expertise and high quality data for the preparation of generic and site specific quantitative risk assessment. We use a variety of computer based models including: the CLEA model, the Environmental Agency P20 and RBCA.
Generic quantitative risk assessment compares the results from the site investigation with generically derived screening values to mitigate the risk to human health and environmental receptors. When values are exceeded risk assessment may be adopted to generate a model that reflects the conditions of the site. The more robust the model that is generated, the higher the screening values, with a greater potential for a reduction in the remediation required. A site with contamination does not always require remediation.
Brown 2 Green Associates can provide clients with expertise and high quality data for the preparation of generic and site specific quantitative risk assessment. We use a variety of computer based models including: the CLEA model, the Environmental Agency P20 and RBCA.
Remediation Design, Project Management and Validation
When a significant risk is identified, Brown 2 Green Associates can assist clients with the design and project management of initiative remediation solutions. Staff have designed and installed remediation technologies such as: reactive walls, sparging and soil vapour extractions. With this knowledge we can provide clients with a good practical understanding of the remediation requirement. We consider all the clients requirements including timescales, build programmes and off-site disposal, re-use or if the waste classification be down-graded through remediation.
Independent verification and validation is a pre-requisite of many projects within the construction industry. Remediation may require confirmation that the technology is having the desired effect or that imported soil is “fit for purpose” or suitable for use. Verification and validation by an independent consultant can provide clients and regulators with confidence that work is being completed to the required standard.
Independent verification and validation is a pre-requisite of many projects within the construction industry. Remediation may require confirmation that the technology is having the desired effect or that imported soil is “fit for purpose” or suitable for use. Verification and validation by an independent consultant can provide clients and regulators with confidence that work is being completed to the required standard.
Regulatory Liaison and Completion
Brown 2 Green Associates ensure that good communication is maintained with all parties. Most construction projects will be subjected to rigorous scrutiny by regulators from a construction and environmental perspective. We can liaise closely with the Planning Department and Contaminated Land Officer of the local council or Environment Agency to discharge a planning condition.
Our sound knowledge of geotechnics and the assessment of contaminated land enables us to liaise with regulatory authorities on your behalf. Our experience and high degree of technical understanding can help resolve concerns between clients and regulators and minimise protracted discussions. We can assist at all stages, from initial contact at the planning stage to completion following remediation.
Our sound knowledge of geotechnics and the assessment of contaminated land enables us to liaise with regulatory authorities on your behalf. Our experience and high degree of technical understanding can help resolve concerns between clients and regulators and minimise protracted discussions. We can assist at all stages, from initial contact at the planning stage to completion following remediation.
CL:AIRE Definition of Waste: Development Industry Code of
Practice and Material Management Plans
The objective of the CL:AIRE Definition of Waste: Development Industry Code of Practice is to encourage the reuse of waste soils that are generated. Under waste management regulations where soils are not suitable for use or there is excess soil, the soil is classified as waste. The Code of Practice provides a framework for the re-use of this waste. Under the Code of Practice it is possible for the Environment Agency to permit import of waste soils or reuse on a site without an environmental permit or an exception under the waste management regulations.
Brown 2 Green Associates can guide clients through the Code of Practice protocols and prepare the Material Management Plan. Staff within the company hold the Qualified Persons status and are able to review, sign and submit the required declaration to the Environment Agency.
Brown 2 Green Associates can guide clients through the Code of Practice protocols and prepare the Material Management Plan. Staff within the company hold the Qualified Persons status and are able to review, sign and submit the required declaration to the Environment Agency.
Brown 2 Green Associates Ltd - Wenden Court, Station Road, Wendens Ambo, Saffron Walden, Essex, CB11 4LB - Tel: 01799 542473 - [email protected]
