Case Studies GESL

CASE STUDIES

Site Investigations

Borough Viaduct London

Palace Pier, Brighton

Spinnaker Tower, Portsmouth

• RAIL & TRANSPORT • COMMERCIAL DEVELOPMENT • HOUSING DEVELOPMENT • PUBLIC SECTOR • UTILITIES • SCHOOLS • SPORT & LEISURE

Excellence in Geotechnical and Environmental Services

Network Rail Geotechnical Engineering Sector: Rail and Transport Value:

Approx. £450k

Date:

2008 to Present

We Value: Quality Health and Safety Environmental Management Sustainability Equal Opportunity

Environmental Consultancy Site Investigations

Borough Viaduct London

Palace Pier, Brighton

Spinnaker Tower, Portsmouth

The Project Geo-Environmental has undertaken a comprehensive ground and structural investigation for a new bridge and viaduct structure which forms part of the £5.5bn Thameslink Programme.

Services Supplied on this Project: •

Deep Cable Percussion Boreholes

•

Rotary Boreholes

•

Boretrak Verticality Testing

•

Window Sampling

•

Dynamic Probing

•

Concrete/Masonry Coring

•

Deep Hand Excavated Trial Pits

•

Form C.

The site works comprised investigations in busy public spaces including Borough Market, Southwark Street and Railway Approach (leading to London Bridge Station).

With such a complex project Geo-Environmental had to work with a wide range of stakeholders which included: Network Rail, Skanska, Tfl, Atkins, Museum of London, Planning Authority, and Borough Market.

Expertise Due to the complex nature of the project and challenging working environment, investigative methods required adaptation whilst on site in order to deliver the required objectives. GeoEnvironmental’s experienced team was able to advise the client on the most suitable techniques and implement them seamlessly into the scope of works thus avoiding any undue delays to the project. Geo-Environmental also had to comply with both the Main Contractor (Skanska) and the client’s Networks Plan for the Borough Viaduct Development rigorous Health and Safety requirements.

GeoEnvironmental was able to provide in a timely fashion all the required documentation including Work Package Plans, Task Briefings and Form Cs (for temporary works design).

Benefits

28 Crescent Road, Brighton, East Sussex, BN2 3RP Tel: +44 1273 699399 www.gesl.net

Geo-Environmental prides itself on offering clients a personal service and in a complex working environment this approach produced a successful outcome under challenging conditions. Geo-Environmental professional and flexible approach to the works together with effective communication with the Stakeholders Network Rail, Skanska, Tfl, Atkins, Museum of London, Planning Authority, and Borough Market assisted in achieving the projects goals and ultimately the likely successful delivery of this important transport link in time for the 2012 Olympics.

Excellence in Geotechnical and Environmental Services We are a trusted supplier of choice for Geotechnical and Environmental Services for our customers by delivering consistent quality and reliability, taking seriously our obligations to operate safely and sustainably, valuing and supporting our workforce and delivering value for money for our customers.

Marshall Surfacing Contracts Ltd Geotechnical Engineering Sector: Rail and Transport Value: Approx. £3.5k Date:

2010

Services Supplied on this Project: •

Project management

•

250mm diameter cable percussion boreholes

•

Site supervision

•

Falling head soakage tests in accordance with BS5930: 1999

•

Provision of factual report

We Value: Quality Health and Safety Environmental Management Sustainability Equal Opportunity

Environmental Consultancy Site Investigations

Borough Viaduct London

Palace Pier, Brighton

Spinnaker Tower, Portsmouth

The Project Geo-Environmental was appointed by Marshall Surfacing in order to assess the suitability, and install new bored soakaways for highways in Surrey.

The project involved drilling cable percussion boreholes to the required depth and undertaking a falling head soakage test. If the infiltration rate was sufficient, the installation of the necessary pipe-work and siphon head was completed and a post installation soakage test undertaken to confirm the performance of the soakaway.

Aerial of Site Location, Caterham, Surrey

Expertise Geo-Environmental provided the required large diameter drilling equipment required, assess the results of the initial falling head test and install the pipe-work all in one operation.

Benefits It is often the case that a 150mm diameter cable percussion borehole is drilled to assess the potential for a soakaway and the soakaway is then installed as a separate exercise necessitating the drilling of a further large diameter borehole. GeoEnvironmental’s detailed project management allows the careful sequencing of the works so that only one borehole is required. This provides a real benefit to the client in terms of both time saved and reduced costs.

28 Crescent Road, Brighton, East Sussex, BN2 3RP Tel: +44 1273 699399 www.gesl.net

.

Excellence in Geotechnical and Environmental Services We are a trusted supplier of choice for Geotechnical and Environmental Services for our customers by delivering consistent quality and reliability, taking seriously our obligations to operate safely and sustainably, valuing and supporting our workforce and delivering value for money for our customers.

Hall and Woodhouse Geotechnical Engineering Sector: Commercial Development Value:

Approx. £40k

Date:

2006 to Present

We Value: Quality Health and Safety Environmental Management Sustainability Equal Opportunity

Environmental Consultancy Site Investigations

Borough Viaduct London

Palace Pier, Brighton

Spinnaker Tower, Portsmouth

The Project Services Supplied on this Project: •

Desk Study Assessment;

•

Environmental Impact Assessment;

•

Preliminary Ground Investigation;

•

Contaminated Land

•

Investigation Strategy;

•

Detailed Investigation;

•

Geotechnical Assessment;

•

Contamination Risk Assessment;

•

Ground Gas Risk Assessment;

•

Development of Remedial Strategies;

•

Construction Phase Inspection;

•

Validation;

•

Regulatory Consultation and Liaison.

28 Crescent Road, Brighton, East Sussex, BN2 3RP Tel: +44 1273 699399 www.gesl.net

On behalf of Hall & Woodhouse Geo-Environmental undertook multiple phases of investigation and site assessment on a new mixed use development for their Blandford Brewery which included a state of the art brewery complex, commercial areas and future residential development. Geo-Environmental provided technical and consultancy services in the development from Master Planning to detailed planning stage for the redevelopment. The site’s lengthy use as a brewery and its environmental sensitivity, close to the River Stour and overlying a Major Aquifer, combined with the scope of the proposed development itself, made this a complex project that required a multi-phased investigation and assessment strategy.

Aerial of Site Location, Blandford, Dorset

Expertise On such a complex project both the approach taken and advice provided needs to be tailored to fit with the requirements of the Client, designer and regulators – an “off the shelf” solution is not appropriate. Geo-Environmental provided a professional approach to meeting the Client’s and regulators’ requirements through a phased assessment approach, with the introduction of specific professional services at key stages of the planning, design and development cycle.

Geo-Environmental worked closely with the design and construction teams to deliver remedial objectives in an integrated construction solution.

Benefits It was important that the site remained in operation as a brewery while the site investigation works were carried out. It is always Geo-Environmental’s aim to help our clients minimise financial exposure and environmental incidents by thoroughly identifying risk and creating a plan to design these out, or suggest effective mitigation strategies. Geo-Environmental were able to provide ground investigation services which suited the specific site constraints and achieved these goals.

Excellence in Geotechnical and Environmental Services We are a trusted supplier of choice for Geotechnical and Environmental Services for our customers by delivering consistent quality and reliability, taking seriously our obligations to operate safely and sustainably, valuing and supporting our workforce and delivering value for money for our customers.

Fuller, Smith &Turner P.L.C. Geotechnical Engineering Sector: Commercial and Housing Development

Value: Approx. £15k Date:

We Value: Quality Health and Safety Environmental Management Sustainability Equal Opportunity

Environmental Consultancy Site Investigations

Borough Viaduct London

2009 to 2010

Palace Pier, Brighton

Spinnaker Tower, Portsmouth

The Project Services Supplied on this Project: •

Desk Study Assessment;

•

Chalk Cavity Assessment;

•

Ground Investigation (Window Sampling and Trial Pitting);

•

Trial Pit Soakage Tests in Accordance with BRE Digest 365;

•

Geotechnical Assessment for Foundations;

•

Contamination Risk Assessment;

•

Ground Gas Risk Assessment.

Geo-Environmental undertook an investigation, on behalf of Fuller, Smith and Turner P.L.C. for the proposed mixed use development of a former brewery site in Horndean.

The site extended over three land parcels each with their own unique history.

In addition to general brewery operations, former site uses included meat processing, vehicle re-fuelling (brewery fleet), coal powered boilers (latterly gas powered) and blacksmith/forge works. In addition, the main brewery building included a cellar complex which formerly housed beer vats and a groundwater abstraction well extending to depth in the underlying Upper Chalk (major aquifer).

The investigations included a detailed desk study assessment followed by an intrusive investigation. At the time of the intrusive investigation, the site remained operational and thus careful planning and liaison with Client management and site personnel was required.

Aerial of Site Location, Horndean, Hampshire

Expertise Geo-Environmental worked closely with the Client to provide a phased assessment to support the disposal of the site for redevelopment. Geo-Environmental was able to provide specific expertise in relation to local geological hazards, their identification and implications for development. The geotechnical and contamination assessments required a detailed understanding of the site’s history, the potential impact on land quality associated with the complex historic use and former land uses in proximity to the site.

Benefits

28 Crescent Road, Brighton, East Sussex, BN2 3RP Tel: +44 1273 699399 www.gesl.net

Geo-Environmental worked closely with Fuller, Smith and Turner plc to deliver a professional, tailored and bespoke investigation to meet their specific requirements on this project. Geo-Environmental was able to present the assessment and a range of recommendations in a clear and concise manner to facilitate understanding and decision making by the Client, designers, developer and regulators.

Excellence in Geotechnical and Environmental Services We are a trusted supplier of choice for Geotechnical and Environmental Services for our customers by delivering consistent quality and reliability, taking seriously our obligations to operate safely and sustainably, valuing and supporting our workforce and delivering value for money for our customers.

Linden Homes Southern Ltd Geotechnical Engineering Sector: Commercial Development Value: Approx. £10k Date:

2009

We Value: Quality Health and Safety Environmental Management Sustainability Equal Opportunity

Environmental Consultancy Site Investigations

Borough Viaduct London

Palace Pier, Brighton

Spinnaker Tower, Portsmouth

The Project Services Supplied on this Project: •

Desk Study Assessment;

•

Preliminary Ground Investigation (Window Sample Boreholes and Trial Pitting);

•

In-situ Testing for Pavement Design;

•

Trial Pit Soakage Tests in Accordance with BRE Digest 365;

•

Supplementary Investigation (Cable Percussion Boreholes);

•

Geotechnical Assessment for Foundations and Earthworks;

•

Contamination Risk Assessment;

•

Ground Gas Risk Assessment;

•

Earthworks Fill Suitability Assessment and Specification.

Geo-Environmental undertook an investigation for the proposed development of a site in Totton, from fallow farmland to sports pitches, stands, a clubhouse complex and car parking areas. The site itself was situated on a gentle slope and therefore required re-profiling in order to form the level sports pitches specified in the development.

Taking this into account and in consultation with Linden Homes, the investigation therefore included an assessment for earthworks fill suitability and earthworks specification.

Following the first phase of the ground investigation, the clubhouse complex was found to overlie soft compressible soils, which could have required a change in Linden Homes development strategy. Geo-Environmental investigated options for the Client and initial consideration was given to changing the development layout. After due consideration this was found not to be a feasible option and thus a supplementary investigation was undertaken to support the design of piled foundations.

Expertise Whilst the form of this development was a departure from that typically undertaken by Linden Homes, GeoEnvironmental was able to provide relevant professional and technical support to understand and overcome the challenges with this site and achieve the required goals to support its development. When challenges are identified in site developments, experienced geotechnical engineers Aerial of Site Location, Totton, Hampshire can ensure that delays and additional costs do not occur. Our geotechnical team has extensive experience and this is a crucial factor in ensuring that our clients meet their goals.

Benefits The abnormal ground conditions and development layout constraints required the consideration of innovative solutions to achieve the Client’s objectives.

GeoEnvironmental’s experienced and customer focussed Geotechnical Engineers worked in close collaboration with the Client to deliver the required information in a timely and cost effective manner. .

28 Crescent Road, Brighton, East Sussex, BN2 3RP Tel: +44 1273 699399 www.gesl.net

Excellence in Geotechnical and Environmental Services We are a trusted supplier of choice for Geotechnical and Environmental Services for our customers by delivering consistent quality and reliability, taking seriously our obligations to operate safely and sustainably, valuing and supporting our workforce and delivering value for money for our customers.

George and Harding Geotechnical Engineering Sector: Commercial Development Value: Approx. £45k Date:

2007

We Value: Quality Health and Safety Environmental Management Sustainability Equal Opportunity

Environmental Consultancy Site Investigations

Borough Viaduct London

Palace Pier, Brighton

Spinnaker Tower, Portsmouth

The Project Services Supplied on this Project: • Desk Study Assessment;

Geo-Environmental undertook geotechnical and environmental ground investigations, on behalf of George and Harding, at ten Travelodge Hotel sites across the country to ascertain ground conditions for the design of new hotel buildings and extensions to existing hotel buildings. The site works were programmed to be undertaken over a period of ten working days and were co-ordinated to run consecutively.

The investigations were carried out during hotel operations, within the Travelodge car parks and immediately around the footprints of each hotel buildings.

• Sub-Surface Services Survey • Intrusive Ground Investigation by Cable Percussion Rig, Window Sampling and Hand Excavation of Trial Pits; • Geotechnical Assessment for Foundations and Earthworks; • Contamination Risk Assessment; • Ground Gas Risk Assessment

Picture of a Travelodge

Geo-Environmental’s ability to provide robust Health and Safety strategies to provide protection for the site investigation operatives, general public, and Travelodge customers and workers proved to be a key element in the success of the works.

Expertise Geo-Environmental was able to provide a robust Health and Safety Plan, relevant site specific Risk Assessments and Method Statements for all works carried out on each of the ten sites across the country.

Benefits Utilising strict site controls and following robust, yet pragmatic health and safety protocols, the works were carried out in such a manner as to limit disruption and associated risks to Travelodge customers, the general public and the hotels infrastructure.

The Travelodge contract was awarded to Geo-Environmental, despite keen competition from other ground investigation companies, primarily due finding ways of significantly cutting costs without compromising the quality of the end product.

28 Crescent Road, Brighton, East Sussex, BN2 3RP Tel: +44 1273 699399 www.gesl.net

The reports for each site were delivered on time and within budget. Subsequent to this contract, Geo-Environmental have been awarded work on several further Travelodge sites with an approximate contract value in excess of £60k. We continue to maintain a very good working relationship with the client, associated consultants and design and build contractors.

Excellence in Geotechnical and Environmental Services We are a trusted supplier of choice for Geotechnical and Environmental Services for our customers by delivering consistent quality and reliability, taking seriously our obligations to operate safely and sustainably, valuing and supporting our workforce and delivering value for money for our customers.

Barratt Southern Counties Ltd Geotechnical Engineering Sector: Housing and Commercial Development

Value: Approx. £30k Date:

We Value: Quality Health and Safety Environmental Management Sustainability Equal Opportunity

Services Supplied on this Project: •

Phase 1 desk study assessment;

•

Contaminated Land Investigation Strategy;

•

Trial pitting;

•

Deep Cable percussion boreholes

•

Window sampling;

•

Monitoring well installation;

•

Geotechnical Assessment

Site Investigations

Borough Viaduct London

April 2007 to September 2009

Environmental Consultancy

Palace Pier, Brighton

Spinnaker Tower, Portsmouth

The Project Geo-Environmental undertook phased investigations on land at Guildford Road, Woking on behalf of Barratt Southern Counties for their New Central Development. The development comprised the construction of a mixed use development comprising 445 studio, 1 bed and 2 bed apartments, 4 bed town houses, live / work units, office, retail and food and drink space. The project provided several challenges due to the complex history of the site which included parts of the site being occupied by a fuel filling station, and many other potentially contaminative businesses. Furthermore, the site presented geotechnical challenges due to the proposed height of the apartment blocks (up to 22 storeys) and the large basement occupying the entire development footprint.

Aerial of Site Location, Guildford Road, Woking

• Foundations • Retaining Structures •

Geo-Environmental Assessment • Contamination risk assessment for human health, controlled water and built environment • Ground gas risk assessment;

•

Remedial Strategy;

•

Remediation Method Statement;

Expertise Geo-Environmental has undertaken many investigations in the Woking area and as such had extensive prior knowledge on the anticipated ground and groundwater conditions beneath the site. Furthermore, Geo-Environmental has built-up a strong reputation with the local regulators and as such was able to liaise effectively with them and work collaboratively.

Benefits 28 Crescent Road, Brighton, East Sussex, BN2 3RP Tel: +44 1273 699399 www.gesl.net

Geo-Environmental’s local expertise and knowledge of the anticipated ground conditions allowed the cost effective design of the investigation. In addition, effective communication with the relevant stakeholders including the local regulator ensured that the aims and objectives of the investigation were met in a timely manner.

Excellence in Geotechnical and Environmental Services We are a trusted supplier of choice for Geotechnical and Environmental Services for our customers by delivering consistent quality and reliability, taking seriously our obligations to operate safely and sustainably, valuing and supporting our workforce and delivering value for money for our customers.

Linden Homes Southern Ltd Geotechnical Engineering Sector: Housing Development

Value: Approx. £100k Date:

2007 to Present

We Value: Quality Health and Safety Environmental Management Sustainability Equal Opportunity

Environmental Consultancy Site Investigations

Borough Viaduct London

Palace Pier, Brighton

Spinnaker Tower, Portsmouth

The Project Services Supplied on this Project: •

Detailed Desk Study Assessment;

•

Contaminated Land Investigation Strategy;

•

Trial Pitting;

•

Cable Percussion Boreholes

•

Window Sampling;

•

Soakage Testing;

•

Monitoring Well Installation;

•

Geotechnical Assessment •

Foundations

•

On-site Highways

•

Drainage;

Geo-Environmental undertook investigations on land at Chandlers Ford on behalf of Linden Homes. The former industrial and commercial uses of the site meant that a complex assessment strategy was required to address the environmental sensitivities involved with converting this site to residential use. As well as the geotechnical assessments it was necessary to perform a range of detailed environmental assessments and develop remediation strategies to deliver a site for residential use.

Aerial of Site Location, Chandlers Ford, Hampshire

•

Geo-Environmental Assessment •

Contamination Risk Assessment for Human Health, Controlled Water and Built Environment

•

Ground Gas Risk Assessment;

•

Remedial Strategy;

•

Remediation Method Statement;

•

Validation;

•

Regulator Consultation and Liaison.

28 Crescent Road, Brighton, East Sussex, BN2 3RP Tel: +44 1273 699399 www.gesl.net

Expertise Geo-Environmental worked closely with the Client, regulators and other members of the design and construction team to provide a phased assessment to support the development of the site for housing. Geo-Environmental was able to provide specific expertise in relation to the assessment, characterisation and remediation of this complex brownfield site. A combination of remedial solutions were required sometimes at different stages of the development due to the site’s complex land use history and sensitivity of the development. This required a thorough understanding of the Client’s objectives and development programme.

Tackling the challenges posed by brownfield land, requires a wide range of technical expertise and practical experience to ensure that risks are minimised and assets realised. Geo-Environmental provided a comprehensive service, being able to take this project from the initial phase of assessment and investigation through to remediation and validation.

Benefits Geo-Environmental took a collaborative approach to working with the Client, regulators and other members of the design and construction team thereby supporting both an innovative approach to risk management and the provision of integrated solutions to enhance the built environment. Through professionalism, effective communication and flexibility, Geo-Environmental worked with Linden Homes to deliver their goals and helped to minimise delays and expenditure on the development.

Excellence in Geotechnical and Environmental Services We are a trusted supplier of choice for Geotechnical and Environmental Services for our customers by delivering consistent quality and reliability, taking seriously our obligations to operate safely and sustainably, valuing and supporting our workforce and delivering value for money for our customers.

Fuller, Smith &Turner P.L.C. Geotechnical Engineering Sector: Commercial and Housing Development

Value: Approx. £15k Date:

We Value: Quality Health and Safety Environmental Management Sustainability Equal Opportunity

Environmental Consultancy Site Investigations

Borough Viaduct London

2009 to 2010

Palace Pier, Brighton

Spinnaker Tower, Portsmouth

The Project Services Supplied on this Project: •

Desk Study Assessment;

•

Chalk Cavity Assessment;

•

Ground Investigation (Window Sampling and Trial Pitting);

•

Trial Pit Soakage Tests in Accordance with BRE Digest 365;

•

Geotechnical Assessment for Foundations;

•

Contamination Risk Assessment;

•

Ground Gas Risk Assessment.

Geo-Environmental undertook an investigation, on behalf of Fuller, Smith and Turner P.L.C. for the proposed mixed use development of a former brewery site in Horndean.

The site extended over three land parcels each with their own unique history.

In addition to general brewery operations, former site uses included meat processing, vehicle re-fuelling (brewery fleet), coal powered boilers (latterly gas powered) and blacksmith/forge works. In addition, the main brewery building included a cellar complex which formerly housed beer vats and a groundwater abstraction well extending to depth in the underlying Upper Chalk (major aquifer).

The investigations included a detailed desk study assessment followed by an intrusive investigation. At the time of the intrusive investigation, the site remained operational and thus careful planning and liaison with Client management and site personnel was required.

Aerial of Site Location, Horndean, Hampshire

Expertise Geo-Environmental worked closely with the Client to provide a phased assessment to support the disposal of the site for redevelopment. Geo-Environmental was able to provide specific expertise in relation to local geological hazards, their identification and implications for development. The geotechnical and contamination assessments required a detailed understanding of the site’s history, the potential impact on land quality associated with the complex historic use and former land uses in proximity to the site.

Benefits

28 Crescent Road, Brighton, East Sussex, BN2 3RP Tel: +44 1273 699399 www.gesl.net

Geo-Environmental worked closely with Fuller, Smith and Turner plc to deliver a professional, tailored and bespoke investigation to meet their specific requirements on this project. Geo-Environmental was able to present the assessment and a range of recommendations in a clear and concise manner to facilitate understanding and decision making by the Client, designers, developer and regulators.

Excellence in Geotechnical and Environmental Services We are a trusted supplier of choice for Geotechnical and Environmental Services for our customers by delivering consistent quality and reliability, taking seriously our obligations to operate safely and sustainably, valuing and supporting our workforce and delivering value for money for our customers.

Berkeley Homes Southern Ltd Geotechnical Engineering Sector: Housing Development

Value: Approx. £100k Date:

2007

Services Supplied on this Project: •

Design and Scoping of An Intrusive Investigation;

•

Trial Pitting;

•

Cable Percussion Boreholes;

•

Cone Penetration Testing;

•

Window Sampling;

•

Monitoring Well Installation;

•

Geotechnical Assessment

We Value: Quality Health and Safety Environmental Management Sustainability Equal Opportunity

Environmental Consultancy Site Investigations

Borough Viaduct London

Palace Pier, Brighton

Spinnaker Tower, Portsmouth

The Project Geo-Environmental undertook a detailed ground investigation, on behalf of Berkeley Homes, for a major new development which included housing development, community centres, school and 1.8km of new by-pass -1km of which was over deep soft ground.

These conditions, combined with the scale of the site, meant that the investigation and assessment strategy for this development would be complex and challenging.

The investigation included comprehensive laboratory testing for geotechnical and contamination purposes, the compilation of an interpretative report and preliminary design for earthworks, foundations and embankment construction over deep, soft ground. The main phase of site works were completed within a four week window.

• Foundations (Residential Development) • Earthworks Suitability and Classification • On-site Highways

Aerial of Site Location, North Bersted, West Sussex

• Soft Ground Engineering Options • Slope Stability; •

Geo-Environmental Assessment • Contamination Risk Assessment for Human Health, Controlled Water and Built Environment • Ground Gas Risk Assessment;

•

Technical Support on Submission of Design Documentation (e.g. AIP Form C).

28 Crescent Road, Brighton, East Sussex, BN2 3RP Tel: +44 1273 699399 www.gesl.net

Expertise This was a challenging site both in terms of the scale of development and complex ground conditions. Through a combination of early involvement, availability of relevant technical and professional competencies and clear communication with the Client, Geo-Environmental was able to assess key issues at a very early stage and through understanding the form of development and the Client’s objectives, to design a ground investigation to assess a broad range of technical issues and thus provide the Client and other members of the design team with appropriate advice to enable objectives to be met.

Benefits Geo-Environmental works closely with clients and other members of a client assembled team to deliver pertinent information and provide technical advice in a timely and cost effective manner. Geo-Environmental’s experienced Geotechnical Engineers were able to identify abnormal conditions, assess a range of development and construction options and provide technical support in progressing integrated design solutions to achieve key objectives. .

Excellence in Geotechnical and Environmental Services We are a trusted supplier of choice for Geotechnical and Environmental Services for our customers by delivering consistent quality and reliability, taking seriously our obligations to operate safely and sustainably, valuing and supporting our workforce and delivering value for money for our customers.

Barratt Southern Counties Ltd Geotechnical Engineering Sector: Housing and Commercial Development

Value: Approx. £30k Date:

We Value: Quality Health and Safety Environmental Management Sustainability Equal Opportunity

Services Supplied on this Project: •

Phase 1 desk study assessment;

•

Contaminated Land Investigation Strategy;

•

Trial pitting;

•

Deep Cable percussion boreholes

•

Window sampling;

•

Monitoring well installation;

•

Geotechnical Assessment

Site Investigations

Borough Viaduct London

April 2007 to September 2009

Environmental Consultancy

Palace Pier, Brighton

Spinnaker Tower, Portsmouth

The Project Geo-Environmental undertook phased investigations on land at Guildford Road, Woking on behalf of Barratt Southern Counties for their New Central Development. The development comprised the construction of a mixed use development comprising 445 studio, 1 bed and 2 bed apartments, 4 bed town houses, live / work units, office, retail and food and drink space. The project provided several challenges due to the complex history of the site which included parts of the site being occupied by a fuel filling station, and many other potentially contaminative businesses. Furthermore, the site presented geotechnical challenges due to the proposed height of the apartment blocks (up to 22 storeys) and the large basement occupying the entire development footprint.

Aerial of Site Location, Guildford Road, Woking

• Foundations • Retaining Structures •

Geo-Environmental Assessment • Contamination risk assessment for human health, controlled water and built environment • Ground gas risk assessment;

•

Remedial Strategy;

•

Remediation Method Statement;

Expertise Geo-Environmental has undertaken many investigations in the Woking area and as such had extensive prior knowledge on the anticipated ground and groundwater conditions beneath the site. Furthermore, Geo-Environmental has built-up a strong reputation with the local regulators and as such was able to liaise effectively with them and work collaboratively.

Benefits 28 Crescent Road, Brighton, East Sussex, BN2 3RP Tel: +44 1273 699399 www.gesl.net

Geo-Environmental’s local expertise and knowledge of the anticipated ground conditions allowed the cost effective design of the investigation. In addition, effective communication with the relevant stakeholders including the local regulator ensured that the aims and objectives of the investigation were met in a timely manner.

Excellence in Geotechnical and Environmental Services We are a trusted supplier of choice for Geotechnical and Environmental Services for our customers by delivering consistent quality and reliability, taking seriously our obligations to operate safely and sustainably, valuing and supporting our workforce and delivering value for money for our customers.

Brighton & Hove City Council Geotechnical Engineering Sector: Public Sector Value: Approx. £5k Date:

2009

We Value: Quality Health and Safety Environmental Management Sustainability Equal Opportunity

Environmental Consultancy Site Investigations

Borough Viaduct London

Palace Pier, Brighton

Spinnaker Tower, Portsmouth

The Project Services Supplied on this Project: •

Window sampling

•

Hand pitting • Analysis using portable X-ray Fluorescence (XRF) equipment

Geo-Environmental undertook an investigation on behalf of Brighton & Hove City Council for a proposed redevelopment in Brighton. The proposed small scale development comprised the demolition of an existing structure and replacement with a new building on a similar footprint. The project initially comprised a limited ground investigation to assess the geotechnical parameters of the soils for foundation design and soakage potential. Based on the sites historical usage, there was no reason to suspect any significant contamination, and therefore only limited chemical testing was undertaken. The findings of the investigation revealed a localised area of Benzo(a) pyrene contamination and potentially more widespread Lead contamination with respect to the sites proposed end-use. Geo-Environmental recommended field analysis using portable X-ray Fluorescence (XRF) equipment and UV Fluorescence equipment to delineate the Lead and Benzo(a)pyrene in-situ.

• and UV Fluorescence equipment •

Geotechnical Assessment

•

Foundations and Soakaways

•

Geo-Environmental Assessment • Contamination risk assessment for human health and built environment • Radon gas risk assessment

28 Crescent Road, Brighton, East Sussex, BN2 3RP Tel: +44 1273 699399 www.gesl.net

Aerial view of Brighton

Expertise Geo-Environmental’s experienced team with its broad knowledge of investigation techniques was able to advise the client and provide an innovative solution to the problem of delineating contamination.

Benefits With conventional methods a fixed sampling pattern would have been used and unless the client was prepared to pay a premium for a fast turnaround at the laboratory the results would not have been available for two weeks. The main benefit of using field analysis was that the sampling strategy could be altered and amended as works progressed to aid the delineation of “hot-spots”. This was possible as the results were available to the engineer within 60 seconds. Therefore, the client was provided with significantly better delineation than would have been possible with conventional sampling and laboratory analysis. Furthermore, the rapid technique also has cost benefits as it allowed far more samples to be tested compared to the comparable cost of laboratory analysis on a similar number of samples.

Excellence in Geotechnical and Environmental Services We are a trusted supplier of choice for Geotechnical and Environmental Services for our customers by delivering consistent quality and reliability, taking seriously our obligations to operate safely and sustainably, valuing and supporting our workforce and delivering value for money for our customers.

Fareham Borough Council Geotechnical Engineering Sector: Public Sector Value:

Confidential

Date:

May 2010 to Present

We Value: Quality Health and Safety Environmental Management Sustainability Equal Opportunity

Environmental Consultancy Site Investigations

Borough Viaduct London

Palace Pier, Brighton

Spinnaker Tower, Portsmouth

The Project Services Supplied on this Project: •

Desk Study Assessment;

•

Ground Investigation (window sample boreholes);

•

Geotechnical Assessment;

•

Contamination Risk Assessment;

•

Ground Gas Risk Assessment

Geo-Environmental undertook a combined Phase I and Phase II investigation on a parcel of land for Fareham Borough Council. The investigation was required to fulfil two main roles, namely a combined geotechnical and geo-environmental appraisal for a residential development as well as a pre-acquisition due diligence exercise. The site comprised a ground surface car park under third party ownership and thus investigation planning, health and safety assessments and access negotiations were required both with the Client and the landowner. The scope of investigation was tailored to suit the site use at the time of the investigation and minimise disruption during and after the investigation.

Aerial and Ground Views of Site in Fareham Hampshire

Expertise The Client required the investigation and assessment to be completed on a rapid turnaround. Through understanding the Client’s ultimate requirements, GeoEnvironmental was able to provide relevant professional and technical support in understanding and achieving the required goals to support the acquisition and development of the site. The geotechnical and contamination assessments required a detailed understanding of the site’s history, the potential impact on land quality associated with the historic use and former land uses in proximity to the site.

Benefits

28 Crescent Road, Brighton, East Sussex, BN2 3RP Tel: +44 1273 699399 www.gesl.net

Geo-Environmental worked closely with Fareham Borough Council to deliver an investigation tailored to meet their specific requirements on this project.

Geo-Environmental was able to present the assessment and a range of recommendations in a clear and concise manner to facilitate understanding and decision making by the Client in its capacity as a landowner, developer and regulator.

Excellence in Geotechnical and Environmental Services We are a trusted supplier of choice for Geotechnical and Environmental Services for our customers by delivering consistent quality and reliability, taking seriously our obligations to operate safely and sustainably, valuing and supporting our workforce and delivering value for money for our customers.

Barhale Trant Utilities (BTU) Geotechnical Engineering Sector: Utilities Value:

£60,000

Date:

Jan 2010 to September 2010

We Value: Quality Health and Safety Environmental Management Sustainability Equal Opportunity

Environmental Consultancy Site Investigations

Borough Viaduct London

Palace Pier, Brighton

Spinnaker Tower, Portsmouth

The Project Services Supplied on this Project: •

Trial pitting

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Hand pitting

•

Cable percussion boreholes

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Dynamic probing

•

Dynamic cone penetrometer testing

•

Standpipe installation

•

Cassagrade piezometer installation

•

Vibrating wire piezometer installation

•

Nuclear density testing

•

Chemical analysis

•

On site technical advise

•

Regulator Client liaison

28 Crescent Road, Brighton, East Sussex, BN2 3RP Tel: +44 1273 699399 www.gesl.net

Geo-Environmental was appointed by Barhale Trant Utilities (BTU) to undertake the ground investigation for the Hardham Water Resource Project. Various investigative techniques were employed within the existing Hardham Water Supply Works, along the route of the pipeline and temporary access road, storage pond and other associated structures. Geo-Environmental was again appointed

by BTU under a second phase of work for ongoing monitoring and testing of the earthworks associated with the new storage pond before, during and after construction. Monitoring points were installed in the vicinity of the storage pond, whilst insitu and laboratory based testing was undertaken as the works progressed.

Aerial of Hardham Water Scheme From Southern Water site

Expertise From the first stages of the site work Geo-Environmental worked in partnership with both the Client and the design team to deliver the required information within a tight time-frame during a period of exceptionally poor climatic conditions.

Geo-Environmental also worked closely with land owners and other interested parties in what was a locally sensitive scheme.

Benefits Geo-Environmental received excellent feedback from the Client as site works were underway within five working days of receiving instruction and critical information was presented same day, thus enabling design teams to finalise their plans without delay. Geo-Environmental worked in partnership with the contractor, designers and utility company to deliver the required information within a tight timeframe and within the agreed budget despite the remote locations, difficult access and adverse weather conditions.

Excellence in Geotechnical and Environmental Services We are a trusted supplier of choice for Geotechnical and Environmental Services for our customers by delivering consistent quality and reliability, taking seriously our obligations to operate safely and sustainably, valuing and supporting our workforce and delivering value for money for our customers.

Kier Geotechnical Engineering Sector: Schools Value: Approx. £25k Date:

2009

We Value: Quality Health and Safety Environmental Management Sustainability Equal Opportunity

Environmental Consultancy Site Investigations

Borough Viaduct London

Palace Pier, Brighton

Spinnaker Tower, Portsmouth

The Project Services Supplied on this Project: • Desk Study Assessment; • Ground Investigation (Window Sampling and Hand Excavated Trial Pits); • Geotechnical Assessment for Foundations and Earthworks; • Ground and Groundwater Contamination Risk Assessment; • Ground Gas Risk Assessment

Geo-Environmental undertook ground investigations for eight schools in Harrow in July 2009, for additional temporary and permanent classrooms in preparation for September 2009 year 7 intake. Due to time restraints all investigations were required to be undertaken within one week during school time in June 2009. The works were required to assess potential environmental issues and to support the design of foundations for two storey temporary and permanent classrooms, including additions to existing school buildings. Particular emphasis was given to the potential design of “screw piles” as the most environmentally sustainable form of foundation construction.

Ground view of site, Harrow, London

Expertise Geo-Environmental’s experienced team with its broad knowledge of investigation techniques and environmental sustainability were able to advise the client and provide an innovative solution for the potential design of “screw piles”. Our geotechnical team has extensive experience and this is a crucial factor in ensuring that our clients meet their goals.

Benefits

28 Crescent Road, Brighton, East Sussex, BN2 3RP Tel: +44 1273 699399 www.gesl.net

Of primary importance was the requirement for strict protocols in respect of Health and Safety for the workforce and in particular, the staff and students of the schools, as the works were undertaken during term time. The client confirmed that they were very impressed with all aspects of Health and Safety protocols undertaken by Geo-Environmental, and in particular, our comprehensive Ground view of site, Harrow, London site specific Method Statements and working Risk Assessments. The reports for each investigation were submitted well before the actual deadlines allowing additional time to produce the most cost effective and environmentally sustainable foundation designs to be made.

Excellence in Geotechnical and Environmental Services We are a trusted supplier of choice for Geotechnical and Environmental Services for our customers by delivering consistent quality and reliability, taking seriously our obligations to operate safely and sustainably, valuing and supporting our workforce and delivering value for money for our customers.

Ardent Consulting Engineers Geotechnical Engineering Sector: Sport & Leisure Value: Approx. £6k Date:

2009

We Value: Quality Health and Safety Environmental Management Sustainability Equal Opportunity

Environmental Consultancy Site Investigations

Borough Viaduct London

Palace Pier, Brighton

Spinnaker Tower, Portsmouth

The Project Services Supplied on this Project: •

Trial pit soakage tests in accordance with BRE Digest 365;

•

Chemical Testing, Human Health Risk Assessment;

Geo-Environmental undertook an investigation, on behalf of Ardent Consulting Engineers for the proposed football training ground for Colchester United Football Club.

The site extended over a large undeveloped parcel of land on the edge of Tiptree in Essex and had formerly been used for agriculture.

The scope of works comprised an intrusive investigation to assess the feasibility of the project in terms of soakage potential for storm water disposal and assess the risk of contamination in the near surface soils. At the time of the investigation, the site had open access and was popular with local dog walkers, appropriate safety precautions were taken.

Aerial of Site Location, Colchester, Essex

Expertise Geo-Environmental worked closely with the Client to provide detailed assessment of ground infiltration rates with respect to soakaway design. The geology of the site varied both laterally and vertically and Geo-Environmental were able to provide specific expertise in relation to local geological hazards, their identification and implications for development.

Benefits 28 Crescent Road, Brighton, East Sussex, BN2 3RP Tel: +44 1273 699399 www.gesl.net

Geo-Environmental worked closely with Ardent Consulting Engineers to deliver a professional, tailored and bespoke investigation to meet the client’s specific requirements on this project. Geo-Environmental was able to present the assessment and a range of comprehensive recommendations in a clear and concise manner. .

Excellence in Geotechnical and Environmental Services We are a trusted supplier of choice for Geotechnical and Environmental Services for our customers by delivering consistent quality and reliability, taking seriously our obligations to operate safely and sustainably, valuing and supporting our workforce and delivering value for money for our customers.

CASE STUDIES

Site Investigations

Borough Viaduct London

Palace Pier, Brighton

Spinnaker Tower, Portsmouth

Geo-Environmental Services Ltd 28 Crescent Road, Brighton, BN2 3RP T: 01273 699 399 F: 01273 699 388 Excellence in Geotechnical and Environmental Services