Contact Us

Head Office

Envirotreat Technologies Ltd
LCP House,
The Pensnett Estate,
Kingswinford,
West Midlands.
DY6 7NA

Tel: 01384 288876

Email: sales@envirotreat.com

News/Current Projects

Please click on the images to view these in more detail
 
May – June 2016

mayjun16Envirotreat Technologies Ltd was commissioned by Mar City Homes to remediate a contaminated site in Mill Street, Great Bridge, West Midlands – Mar City Homes are intending to redevelop the site for residential use. The site was contaminated with hydrocarbon pollutants (resulting from former industrial activities on the site). Envirotreat proposed an integrated treatment solution to achieve the remediation objectives – this treatment approach comprised of the installation of an E-Clay Permeable Reactive Barrier (circa 120m in length) combined with targeted in-situ ‘hot-spot’ treatment (circa 800m3). Regulatory approvals were obtained from the Local Authority and the Environment Agency. The remediation works were carried out over a four-week period and were completed successfully.

The photograph shows the in-situ soil treatment process.

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April – June 2016

apjun16Envirotreat Technologies Ltd was commissioned by Willmott Dixon to design and install an E-Clay Permeable Reactive Barrier [PRB] at a former landfill site in Walton on Thames, Surrey. The local authority is developing the site for a leisure complex (running track, sports fields, etc.). The prime purpose of the PRB is to protect the prime offsite receptor (the River Thames) –  the Environment Agency required the installation of the PRB prior to the commencement of the enabling works to address potential risks associated with the migration of contaminated groundwater during the enabling works (as a consequence of disturbance effects). The prime contaminants of concern were total petroleum hydrocarbons, BTEX and ammoniacal nitrogen. Envirotreat attended site in November 2015 and carried out a focused site investigation to provide information on the geology and contamination in the western area of the site (along the proposed PRB alignment) – samples were taken and batch / column testing was undertaken to support the proposed design.

The approved PRB design was installed in May / June 2016. The barrier was installed by in-situ soil mixing using a continuous flight auger [CFA] to the required depth.

Leap Environmental were the environmental consultants for the project.

The photograph shows the installation of the PRB utilising the CFA.

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April – June 2016

apjun2Envirotreat Technologies Ltd was commissioned by the Cuddy Group (on behalf of Persimmon Homes) to undertake treatment of contaminated soils / materials impacted with predominantly hexavalent chromium [Cr VI] and cyanide pollutants on a site in Roade, Northamptonshire. The contamination was associated with the former use of a metal plating and anodising shop on the site – other metallic pollutants were also identified on the site – primarily copper, nickel and zinc (also derived from former plating activities). Envirotreat utilised an advanced stabilisation process to treat the contaminated soils / materials for compliance with the designated remediation target criteria to enable reuse on-site (primarily to protect controlled waters from the risk of pollution by Cr VI and cyanide – these pollutants posed a significant risk to groundwater dur to their inherent high solubility, mobility and toxicity). The advanced stabilisation process utilised ChromeSorb® (a proprietary form of E-Clay designed to chemically sorb and immobilise both cationic metallic species (trivalent chromium Cr3+, nickel Ni2+ etc) and anionic species (hexavalent chromium typically in the form of chromate CrO­42- and cyanide species CN-). Over 4000m3 of contaminated soils / materials were treated utilising the advanced stabilisation process.

The Rolton Group were the environmental consultants for the project.

The photograph shows the ex-situ treatment of contaminated soils with the advanced stabilisation process (incorporating ChromeSorb).

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February – May 2016

fbmay16Envirotreat Technologies Ltd was commissioned by Seddon Construction (on behalf of Castings Plc) to design and implement a remediation strategy to enable the construction of a warehouse extension within the existing manufacturing site at Brownhills, West Midlands. The made ground on the site was contaminated – the prime contaminants of concern were hydrocarbon and metallic pollutants – asbestos contamination had also been identified.

The proposed enabling works for the warehouse extension involved a significant ‘cut’ operation – this was primarily to facilitate the construction of an undercroft car park – the required net ‘cut’ was circa 8,000m3 – the surplus soils were required to be disposed of offsite.

Envirotreat designed and implemented a materials management strategy for the site in accordance with an agreed material management plan [MMP] – the strategy was designed to ensure that only inert soils were disposed of offsite (at a suitable landfill repository).

Envirotreat carried out the necessary enabling and soil management works on the site which included an assessment of the soils in comparison with designated remediation target criteria [RTC]. The strategy incorporated a provision for the treatment of contaminated soils which were not compliant with the RTC. The enabling and soil management works were complicated by the need to maintain large volumes of materials on site to provide temporary support batters for the proposed undercroft car park construction – the piling works were undertaken in conjunction with the enabling works (piling works carried out by Van Elle) – Envirotreat provided a supporting capability for the piling works.

There was an additional requirement to remove a volume of soil (circa 600m3) associated with an area of the site blighted with Japanese Knotweed [JKW]. Envirotreat delineated the extent of JKW within this area resulting in less than 100m3 of non-hazardous soil being transported to the soil treatment facility (the Treatment Hub) – the remainder of the soil was classified as inert and disposed of at the same facility as the other inert soils.

The works were undertaken in accordance with the agreed MMP / CL:AIRE Code of Practice and duly signed off by a Qualified Person.

Sladen Associates were the environmental consultants for the project.

The photograph shows the reuse of ‘site won’ materials

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February – April 2016

febapr16Envirotreat Technologies Ltd was commissioned by Thomas Vale to design and implement a remediation strategy to address historical contamination issues on the site at Pershore Street in the centre of Birmingham. The objective was to enable the redevelopment of the site for residential use. The approved remediation strategy involved the treatment of contaminated soils to enable reuse on-site and to effectively control the management of soils for either reuse or offsite disposal. The overall net ‘cut’ on the site was 2000m3 necessitating the removal from site of a significant volume of surplus soils – the required cut was achieved through the delineation of inert natural soils and made ground with the aim of only removing inert soils from the site.

The prime contaminants of concern on the site were metallic pollutants associated with historical activities on the site. Envirotreat treated circa 3,000m3 of contaminated soils by E-Clay Stabilisation to enable reuse on site.

Envirotreat additionally carried out a significant element of the enabling groundworks (as these works were integral with the delivery of the proposed remediation strategy).

The photograph shows the soil management works being undertaken.

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December 2015

dec15Envirotreat Technologies Ltd was commissioned by Thomas Vale to provide technical support services for the enabling works at a new school development in Primrose Hill Street, Coventry.

Envirotreat developed a remediation strategy to address the identified contamination issues on the site (predominantly hydrocarbon and asbestos contamination associated with historical activities on the site). The approved remediation strategy incorporated a ‘watching brief’ and analytical testing of soils / stockpiles at key stages during the enabling works – the objective was to provide a practical and cost-effective remediation approach for the site whereby geotechnically suitable material was retained on-site and only inert material was disposed of offsite (resulting in significant time and cost savings to the client).

The photograph shows the management of the enabling works through the ‘watching brief’.

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December 2015

dec152Envirotreat Technologies Ltd was commissioned by the Cuddy Group (on behalf of Persimmon Homes) to design and install a permeable reactive barrier [PRB] to protect groundwater receptors during the proposed demolition works to the former plating shop at the site in Roade, Northamptonshire – this site is being developed for residential usage by Persimmon Homes. The prime purpose of the barrier was to prevent the migration of highly soluble and mobile hexavalent chromium [Cr VI] contamination within the groundwater –  the barrier was also designed to address other metallic species and cyanide pollutants within the groundwater. The reactive medium within the PRB was a highly pillared form of ChromeSorb® (a proprietary form of E-Clay designed to remove the pollutants from the groundwater by chemically sorbing and immobilising both cationic metallic species (trivalent chromium Cr3+, nickel Ni2+ etc) and anionic species (hexavalent chromium typically in the form of chromate CrO­42- and cyanide species CN-).  

The PRB was installed over a two-week period – the PRB was circa 100m in length and installed to the required depth to intercept contaminated groundwater migrating from the site (keying into the underlying impermeable clay layer). The barrier was installed by in-situ soil mixing using an excavator.

The Rolton Group were the environmental consultants for the project.

The photograph shows the PRB installation.

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November 2015

nov15Envirotreat Technologies Ltd was commissioned by Tame Construction to design and implement a remediation strategy to address the identified contamination issues on the site in Coleshill, Warwickshire. The identified contamination was predominantly hydrocarbon in nature (total petroleum hydrocarbons) – both soil and groundwater were heavily impacted. The objective was to remediate the site to enable redevelopment for commercial end use. 

Envirotreat implemented an integrated remediation strategy on the site comprising of source (‘hot-spot’ treatment) by E-Clay Stabilisation (circa 500m3) combined with pathway (groundwater) treatment by the installation of a E-Clay Permeable Reactive Barrier (circa 100m in length).

The photograph shows hydrocarbon contamination associated with the groundwater.

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October 2015

Envirotreat Scotland Ltd are pleased to announce the opening of their soil treatment and recycling centre at Carron Works Falkirk. This is the next stage of growth within the Scottish contaminated soils and recycling market.

The new facility gives our clients the flexibility to continue with our onsite remediation contracts or removing soils off site for treatment at our Falkirk treatment and recycling centre.

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August to September 2015

augsep15Envirotreat Technologies Ltd was commissioned by Thomas Vale to develop and implement a remediation strategy to enable the redevelopment of the former Springfield Brewery Site in Wolverhampton – Thomas Vale are constructing a university technical college on the site (i.e. the West Midlands Construction – University Technical College referred to as WMCUTC).

The remediation strategy focused on material management on the site with the provision to carry out treatment of contaminated soils on the site (if required). The site investigations had identified hydrocarbon and asbestos contamination on the site – the contamination was fairly localised and was managed effectively on the site without the need for treatment.  

The approved remediation strategy comprised of assessing the soils against the agreed remediation target criteria with the aim of maximising the reuse on-site and ensuring that only inert soils were disposed of offsite – a significant volume of surplus soils were generated on-site as a consequence of the designated ‘cut’ requirements for the construction of building foundations, drainage and for the multi-use games area [MUGA] – these soils were analysed and delineated by Envirotreat through the ‘watching brief’ provided. 

Envirotreat implemented the approved remediation strategy and achieved the target objectives – this resulted in a significant time and cost saving to the client.

The photograph shows the management of the enabling works through the ‘watching brief’.

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August 2015

Envirotreat are pleased to announce that David Slater has rejoined the Envirotreat team. David has extensive experience in contaminated land remediation and previously worked for Envirotreat from 2002 – 2008.

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July 2015

jul15Envirotreat Technologies Ltd was commissioned by Speller Metcalfe to undertake remediation of identified hydrocarbon contaminated soils at a site in Stratford-on-Avon, Warwickshire. The contamination was associated with the provision of former heating and engineering facilities on the site (the former Stratford Hospital).  The objective was to treat the contaminated materials for reuse on-site (as part of the overall redevelopment of the site).

Envirotreat carried out trial pitting to delineate the extent of the hydrocarbon contamination – the contamination comprised of a single ‘hot-spot’ circa 500m3 in volume. The contaminated soils and associated groundwater were treated in-situ utilising E-Clay Stabilisation – the treated soils were reused on site. The works were completed within one week.

The photograph shows the delineation of the source contamination.

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June 2015

jun15Envirotreat Scotland Ltd was commissioned by Muir Construction to undertake treatment of contaminated soils at a former petrol filling station [PFS] in MacAlpine Road, Dundee. The soils were contaminated with total petroleum hydrocarbon and BTEX pollutants associated with the historical usage of the site as a PFS.

The site was being redeveloped as a Lidl retail store – Lidl previously occupied the adjoining land area and it was decided for expansion reasons to relocate the store on the site of the former PFS and construct a car parking area in place of the existing store.  

The appointed consultant was Mason Evans Partnership [MEP]. Envirotreat worked with MEP to delineate the extent of the source contamination to satisfy the requirements of Dundee City Council.

The contaminated soils were excavated and treated ex-situ by E-Clay Stabilisation – the soils were treated for compliance with remediation target criteria developed by MEP to enable reuse on the redevelopment site as a whole – circa 2,000m3 was treated within a four-week programme.

The photograph shows the completed development.

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May 2015

may15Envirotreat Technologies Ltd provided technical expertise and independent verification during the removal and decommissioning of a number of fuel tanks at a former petrol filling station in Walsall. These works formed part of the overall redevelopment of the site for residential use. Envirotreat provided environmental monitoring during the removal of the tanks, validation of the excavations on completion of the removal of the tanks and necessary reporting to enable the discharge of planning conditions imposed by the local authority.  

The photograph shows the tank removal.

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April to May 2015

apmay15Envirotreat Technologies Ltd was commissioned by Thomas Vale to provide technical support services for the enabling works at a new school development in Perry Barr, Birmingham. The site was previously occupied by the former IMI Witton (Kynoch) Works.

Envirotreat developed a remediation strategy to address the identified contamination issues on the site (predominantly hydrocarbon and asbestos contamination associated with historical activities on the site). The approved remediation strategy incorporated a ‘watching brief’ and analytical testing of soils / stockpiles at key stages during the enabling works – the objective was to provide a practical and cost-effective remediation approach for the site whereby geotechnically suitable material was retained on-site and only inert and natural soils were disposed of offsite (resulting in significant time and cost savings to the client).

Envirotreat was additionally commissioned to undertake the validation of other key elements of remediation works (including the installation of gas membranes and the importation of suitable materials for use in the capping layer and general landscaping).

The photograph shows the management of the enabling works through the ‘watching brief’.

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January 2015

Envirotreat Technologies Ltd was commissioned by a local developer to remediate a former industrial site near Brownhills to enable the site to be developed for residential purposes. The site was contaminated with hydrocarbon (predominantly diesel) pollutants. Envirotreat addressed the source contamination by carrying out in-situ E-Clay Stabilisation. Contaminated groundwater was utilised within the treatment process.

Photograph shows the In-Situ E-Clay Stabilisation Treatment Process.

 

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December 2014

Envirotreat Technologies Ltd was commissioned by Cognition Land and Water to design and install a Permeable Reactive Barrier at Phase 2 of the prestigious Royal Wharf development in Silvertown, London (located in close proximity to the Thames Barrier). The reactive barrier was installed to protect offsite receptors on the northern boundary of the site and was an extension of the barrier previously installed during the first phase of the development earlier in 2014. The contamination was primarily metallic in nature reflecting the historical use of the site as a munitions / chemicals factory. The barrier length was approximately 200m. The environmental consultants were Card Geotechnics Limited.

Photograph shows the permeable reactive barrier installation.

 

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November 2014
Envirotreat (The Treatment Hub) was kindly invited by Volker Fitzpatrick to the attend the CIWM 2014 Awards Dinner following the contribution the Treatment Hub played in recycling over 16,000 tonnes of hazardous / non-hazardous waste arisings from the Hitachi Rail Hub (Maliphant) Development Site in Swansea. Volker Fitzpatrick was successful in winning the Sustainable Construction and Demolition Award – the press release acknowledged the involvement of the Treatment Hub in winning the award and referenced the use of E-Clay technology for the treatment of the arisings.
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October 2014

Envirotreat Technologies Ltd was commissioned by the Galliford Try Group to remediate a former industrial site in Lichfield to enable the site to be developed for residential purposes. The site was contaminated with hydrocarbon pollutants (both within soil and groundwater) resulting from historical activities on the site. Envirotreat addressed the source contamination by carrying out In-Situ E-Clay Stabilisation. Contaminated groundwater was utilised within the treatment process. Key extraction wells were utilised to pump E-Clay slurry into the saturated zone to treat the remaining localised perched groundwater (following completion of the stabilisation works). The remediation works were approved by the regulatory bodies.

Photograph shows the E-Clay Stabilisation Treatment Process.

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October 2014 – Ongoing

Envirotreat Technologies Ltd was commissioned by Thomas Vale to provide support services for a new school development close to the centre of Coventry. The site was previously occupied by a hospital – the hospital buildings had been demolished and there were substantial volumes of stockpiled demolition rubble remaining on the site prior to commencement of redevelopment works. Thomas Vale wanted to maximise the reuse of stockpiled material on site where possible (and to minimise unnecessary and costly offsite disposal of potentially hazardous and non-hazardous soils / materials). Envirotreat carried out analysis of the stockpiled material which was contaminated to varying degrees by asbestos and petroleum hydrocarbons. Envirotreat developed a remediation strategy for the site which was approved by the regulatory bodies. The strategy involved a ‘watching brief’ and analytical testing of soils / stockpiles at key stages during the enabling works – this enabled a practical and cost-effective remediation approach to be implemented whereby geotechnically suitable material was retained on-site and only inert (made ground) and natural soils were disposed of offsite (resulting in significant time and cost savings to the client). Additionally the works involved the management and control / treatment of Japanese Knotweed present on the site embankment.

Photograph shows the stockpiled material.

 

September 2014

 

Envirotreat Technologies Ltd were commissioned by a private developer to formulate a Japanese Knotweed Management Plan and to undertake treatment of Japanese Knotweed at a proposed development site in Cannock.

Photograph shows Japanese Knotweed prior to treatment.

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August 2014 – March 2015

Envirotreat Technologies Ltd was commissioned by the Cuddy Group to provide remediation and support services for the redevelopment of the central and eastern areas of the former Acordis chemical works in Coventry – the site is being developed for residential purposes by Persimmon. Envirotreat previously provided support services in 2013 for the commercial development in the western area of the site (Lex Autolease). Envirotreat developed a remediation strategy for the site which was approved by the regulatory bodies. The strategy involved the remediation of previously identified hydrocarbon contaminated ‘hot-spots and the provision of a ‘watching brief’ as required with supporting analytical testing of soils. The remediation works comprised of the excavation of the identified ‘hot-spots’ (and validation of the excavations to demonstrate effective removal of the contaminated soils) and subsequent treatment of the excavated soils by Ex-Situ E-Clay Stabilisation. The treated soils were stockpiled pending reuse on-site.

Photograph shows the Ex-Situ E-Clay Stabilisation Treatment Process.

 

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August – December 2014

 

Envirotreat Technologies Ltd was commissioned by Thomas Vale to provide support services for the redevelopment of Burslem College in Stoke-on-Trent. Envirotreat carried out focused site investigations of the proposed development areas prior to formulating a remediation strategy for the site and obtaining the necessary approvals from the Local Authority. The strategy involved a “watching brief” at key stages of the enabling works with supporting analytical testing of soils. This strategy enabled the retention and reuse of all arisings on the site resulting in significant time and cost savings for the client.

Photograph shows enabling works.

 

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July – September 2014

sep14Envirotreat Technologies Ltd was commissioned by Chalcroft Construction to undertake remediation works at the DHL Distribution Depot in Droitwich. The remediation works involved the excavation and removal from site of 1,100m3 of diesel (hydrocarbon) impacted soils. The contaminated soils were shipped to the Treatment Hub in Swansea for subsequent treatment and reciprocally treated soils from the hub were imported to site to infill the voids created by the excavations. This ‘back to back’ recycling operation was carried out under the CL:AIRE Code of Practice. Additionally Envirotreat removed an underground storage tank and associated infrastructure prior to reinstatement with the recycled soils.

Photograph shows the excavation works.

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June 2014

Envirotreat Technologies Ltd was commissioned by Cognition Land and Water to design and implement a Permeable Reactive Barrier at the prestigious Royal Wharf development in Silvertown, London (located in close proximity to the Thames Barrier) – the reactive barrier was installed to protect offsite receptors on the northern boundary of the site – the contamination was primarily metallic in nature reflecting the historical use of the site as a munitions / chemicals factory. The barrier length was approximately 270m. The environmental consultants were Card Geotechnics Limited. 

 

Photograph shows permeable reactive barrier installation.

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April – June 2014

Envirotreat Technologies Ltd was commissioned by Barking Riverside Limited to design and implement an integrated remediation strategy to address groundwater contamination migrating from a former landfill. Barking Riverside is one of the largest development sites in London (185 hectares). It is proposed that 10,800 new homes will be built over the next 20 years. The development will benefit from new transport links such as the East London Transit and the Docklands Light Railway and new primary and secondary schools. The remediation works involved the installation of a Permeable Reactive Barrier System (800m of permeable reactive barrier and 150m of low permeability barrier sections designed to protect the Gores Brook on the eastern boundary and the River Thames on the southern boundary) and the treatment of spent oxide and other contamination hot-spots on the site utilising E-Clay Stabilisation. The environmental consultants were Card Geotechnics Limited. 

 

Photograph 1 shows excavation of identified spent oxide deposits.

Photograph 2 shows ground following barrier installation and reinstatement.

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March 2014

Envirotreat Scotland Ltd was commissioned by East Renfrewshire Council to design and install a Permeable Reactive Barrier to address trivalent and hexavalent chromium contamination impacting an adjacent burn at a site in Muirend, Glasgow. Historically the site had been used for the disposal of chromite ore processing residue [COPR] – the site was capped and subsequently developed as sports / playing fields. The reactive barrier was installed along a section of the burn shown to be significantly impacted with chromium contamination – the barrier incorporated ChromeSorb technology with the dual capability to treat cationic trivalent chromium and anionic hexavalent chromium. 

 

Photograph shows COPR waste leaching from Burn embankment.

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January – March 2014

Envirotreat Scotland Ltd was commissioned by Lidl GmbH to design and implement a remediation strategy to address identified soil and groundwater contamination at a former industrial site in Cambuslang, Glasgow – the site was primarily utilised for a laundry / dry cleaning operation – a lorry yard and timber treatment works was also located on the site. The site is being developed as a new Lidl retail store. The works also involved the replacement of an existing culvert. Envirotreat treated the identified chlorinated hydrocarbon contamination (associated with the former dry cleaning / laundry operation), petroleum hydrocarbon contamination (associated with the lorry yard) and tributyltin contamination (associated with the timber treatment works) utilising E-Clay Stabilisation. The appointed consultants were Mason Evans Partnership who also validated the excavations. 

 

Photograph shows area following source removal and validation

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January 2014

Envirotreat Technologies Ltd was commissioned by Lodge Park Ltd to eradicate Japanese Knotweed from a residential development site in Clent, Worcestershire. Envirotreat formulated a Japanese Knotweed Management Plan [JKMP] for the control and eradication of the Knotweed infestation. The first part of the project involved the excavation of highly infested soils and subsequent removal from site / disposal at a suitably licensed landfill repository. The second phase involves ongoing monitoring and future spraying of any residual growth in accordance with the requirements of the JKMP – this will be carried out later in 2014 (during the growing season). 

 

Photograph during excavation works and the presence of Japanese Knotweed rhizomes.

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December 2013

Envirotreat Technologies Ltd was commissioned by R&D Construction to provide specialist support services to address the environmental risks posed by mercury contamination at RAF Lakenheath (resulting from an historical mercury spillage). Envirotreat provided site supervision during the excavation / reinstatement works and carried out the required validation of the excavations and soils. Envirotreat utilised a portable XRF to enable rapid validation of the excavations – this ensured that the works were undertaken in a timely manner and also enabled rapid assessment of soils to determine suitability for reuse onsite. A small quantity of mercury contaminated soils was removed from site – these soils were disposed of at a suitably licensed landfill repository. 

 

Photograph shows reinstating storm drainage following validation.

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November 2013

Envirotreat Technologies Ltd was commissioned by Earth Science Partnership to design and install a Permeable Reactive Barrier to address hydrocarbon contamination impacting an adjacent brook at a site in Pyle, South Wales. Historically the site had been used as a scrapyard. The current owners (Celtic Recycling) are developing the site as a recycling facility and are also constructing offices. The reactive barrier was installed along two sides of the site to protect the identified off site receptors 

 

Photograph shows ground following barrier installation and reinstatement.

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September

Envirotreat have launched ‘The Hub’ in September 2013. The Hub is a joint venture between Envirotreat and Earth Science Partnership. The Hub is a unique soil treatment facility in the South Wales region with a bespoke Environmental Permit which enables acceptance and treatment of a wide range of contamination (including hazardous and non-hazardous wastes). 

 

 

The Hub is a secure and fully permitted facility utilising Envirotreat’s own proprietary remediation technologies to provide bespoke solutions which can enable material re-use on development projects. The Hub has received support from the Local Authority, Natural Resources Wales, WRAP and CL:AIRE since its inception. The CL:AIRE Code of Practice & Cluster Register is a key element of The Hub process.

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Aug – Sept 2013
Envirotreat Technologies Ltd was commissioned by Trebor Developments to design and implement a remediation strategy to address a number of planning constraints resulting from the proposal to develop a former chemical works in Coventry for a commercial end use. Previous site investigative work to date had shown minimal contamination which was not considered to pose a risk to human health and / or controlled waters. The site investigative work highlighted a number of areas of known contamination requiring further investigation and the potential for further unexpected contamination within the site boundary. On this basis the planning authority placed a number of planning constraints on the development which if invoked would cause considerable delay in the project delivery – for instance the discovery of unexpected contamination required the developer to commission further investigative works and risk assessment prior to continuation. Envirotreat obtained agreement from the planning authority through the implementation of a number of protocols which effectively mitigated these potential delays. Envirotreat additionally provided environmental monitoring during the initial requisite excavation works, including reassurance air monitoring.
The photograph shows the presence of amosite asbestos which was disposed of offsite. 

 

 

 

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July – Aug 2013
Envirotreat Technologies Ltd was commissioned by Anglo Holt Ltd to design and implement a remediation strategy to address identified hydrocarbon contamination at a former manufacturing site in Bromsgrove and to enable discharge of the relevant planning conditions. Envirotreat designed an integrated remediation strategy which treated source contamination by E-Clay Stabilisation and groundwater contamination by the installation of an E-Clay Permeable Reactive Barrier around the site (thereby protecting both human health and controlled water receptors from the risk of pollution.). Envirotreat also implemented a ‘Discovery Strategy’ to address identified concerns with unexpected contamination in areas of the site which had not been fully investigated.
The site is being developed for retail purposes. 

 

 

The photograph shows some of the contamination associated with the site.

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July 2013

Envirotreat Scotland Ltd undertook the remediation of former sewerage filter bed material comprising of stockpiled hydrocarbon contaminated stone / rubble material at a residential development site in New Stevenston. The contaminated materials were treated by E-Clay Stabilisation and validated in accordance with the agreed remediation target criteria. The treated material was considered suitable for reuse on-site as a sub-base under a car parking area. 

 

 

The photograph shows treated material in the foreground.

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May – Aug 2013

Envirotreat Technologies Ltd was commissioned by Jones Brothers Henllan Ltd to design and implement a remediation strategy to treat contaminated materials in the base of a former bitumen storage tank at the Greenergy Fuel Distribution facility in Plymouth. Envirotreat were able to provide a sustainable E-Clay Stabilisation solution as a cost-effective alternative to offsite disposal at Swindon. The task was complicated by the presence of asbestos containing material within the waste and the close proximity of key sensitive receptors (River Plym and South West Coastal Pathway). Envirotreat obtained regulatory approval from both the local authority and the Environment Agency to treat and reuse the material onsite. 

 

 

The photograph shows the contamination within the bitumen tank base.

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Feb – April 2013

Envirotreat Scotland Ltd carried out E-Clay Stabilisation of circa 15,000m3 of contaminated gas works wastes at the former Dalmarnock Gas Works in Glasgow. The treatment process was designed to address the complex contamination issues associated with the site, specifically filter cake residue (resulting from soil washing processing), spent oxide waste (highly elevated total and free cyanides levels) and general gas works waste (tarry waste, mixed wastes, etc). The remediation works were carried out both ex-situ and in-situ to enable reuse of treated material on-site. The project was completed within a 12 week timescale. 

 

 

The photograph shows In-Situ E-Clay Stabilisation of general gas works waste within a former gas holder.

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December 2012

Working with Jones Brothers (Henllan) at a metal processing facility in South Wales, Envirotreat developed a remediation strategy to enable contaminated waste resulting from water treatment processes / arisings from onsite development and manufacturing by-products to be treated and utilised on site for development purposes (as a replacement for import virgin aggregate). 

 

 

 

Picture shows treated soils pending reuse on site:

Working with the Anderson Group / Constable Homes, Envirotreat developed and implemented a remediation strategy enabling the residential development of a former petrol filling station in Chelmsford. The remediation strategy was designed to satisfy the requirements of the Council / Planners, the NHBC and the Environment Agency. Envirotreat undertook all aspects of the remediation works including validation of excavations (following excavation of contaminated soils) to confirm effective removal of identified contaminated soils within the site and the treatment of hydrocarbon impacted soils and associated groundwater by E-Clay stabilisation prior to re-emplacement on site. In addition Envirotreat installed an E-Clay soil mixed permeable reactive barrier to mitigate risks to off-site groundwater / surface water receptors. 

 

 

 

Picture shows on site remediation:

Working with Balfour Beatty, Envirotreat implemented a remediation strategy enabling excavated contaminated soils to be treated and fully recovered for reuse onsite at the Port of Tilbury. The overall project relates to the construction of four wind turbines. 

 

 

Picture shows treated stockpiles:

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November 2012

Working with Mansell Construction, Envirotreat developed and implemented a remediation strategy enabling the residential development of a contaminated site in Edgbaston, Birmingham. The remediation strategy was designed to satisfy the requirements of the Council / Planners, the NHBC and the Environment Agency. Envirotreat undertook all aspects of the remediation works including validation of excavations (following excavation of contaminated soils) to confirm effective removal of identified contaminated soils within the site and the treatment of hydrocarbon impacted soils and associated groundwater by E-Clay stabilisation prior to re-emplacement on site. In addition Envirotreat installed an E-Clay soil mixed permeable reactive barrier to mitigate risks to off-site groundwater / surface water receptors. 

 

 

Picture shows on site remediation:

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July – November 2012

Working with Earth Science Partnership and Gwalia (social housing developer), Envirotreat undertook the remediation of 7,500 tonnes of hydrocarbon / metal contaminated soils excavated from the front and rear gardens of an existing social housing development in Llanelli, South Wales. The works provided a cost effective alternative to offsite disposal. The treated soils were recovered in accordance with the CL:AIRE Code of Practice to be utilised as fill material for a future development on adjoining land (by the same client). 

 

 

Picture shows reuse of treated material on adjoining land:

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June 2012

Working with Tamdown and GM Piling, Envirotreat provided technical and design expertise for a low permeability barrier installation at a site in Tipner, Portsmouth.

Picture shows barrier installation by GM Piling:

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April – May 2012
Working with the Anderson Group, Envirotreat designed and implemented a remediation strategy enabling the residential development of a former petrol filling station in North London. Envirotreat developed a suitable remediation strategy to satisfy the requirements of the Council / planners, the NHBC and the Environment Agency. Envirotreat undertook all aspects of the remediation works including removal of tanks, validation of excavations following excavation of contaminated soils, E-Clay stabilisation of hydrocarbon impacted soils & encountered groundwater prior to re-emplacement on site. In addition Envirotreat installed an E-Clay soil mixed permeable reactive permeable barrier to mitigate risks to off-site groundwater / surface water receptors. Envirotreat obtained all the necessary statutory approvals to enable the development to proceed.
Picture shows installation of the E-Clay Reactive Barrier:
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March 2012
Working with Thomas Vale, Envirotreat designed and implemented a remediation strategy to enable the development of a residential site in Birmingham. The site was contaminated with hydrocarbons associated with the former usage of the site as a lock / ironmongery manufacturer. Envirotreat developed a suitable remediation strategy (in conjunction with Ground Investigation and Piling) to satisfy the requirements of the Birmingham City Council and the Environment Agency. The remediation strategy comprised of a combination of in-situ and ex-situ E-Clay stabilisation of identified contaminated “hotspots” together with the installation of a soil mixed E-Clay / reductive barrier to treat chlorinated hydrocarbon impacted groundwater and residual TPH / PAH contamination.
Picture shows on-site remediation:
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February 2012
Working with Chase, Envirotreat designed and implemented a remediation strategy to enable the development of a new supermarket in Birmingham. Envirotreat developed a suitable remediation strategy (in conjunction with Ground Investigation and Piling) to satisfy the requirements of the Birmingham City Council and the Environment Agency. The site was impacted with TPH contamination associated with the former usage of the site as a maintenance yard and a depot. Envirotreat undertook all aspects of the remediation works including removal of tanks, validation of excavations, excavation of contaminated soils, E-Clay stabilisation of hydrocarbon impacted soils & encountered groundwater and re-emplacement on site following successful validation. In addition Envirotreat designed and installed an E-Clay soil mixed permeable reactive barrier to treat residual hydrocarbon contamination in groundwaters.
Picture shows excavation of impacted soils:
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January 2012
Envirotreat were requested by Colannade Construction to undertake borehole monitoring and interpretation for an industrial development near Iver.
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December 2011 – January 2012
Working with RJ McLeod and Halcrow, Envirotreat designed a remediation strategy to treat hydrocarbon impacted soils associated with the former usage of the site as a steel mill. The project formed part of the overall Clyde Gateway redevelopment scheme. Envirotreat and OnSite Surveys implemented the treatment of circa 6,500m3 of TPH / PAH impacted soils excavated by RJ McLeod. Following E-Clay stabilisation the treated soils were validated against the remediation criteria developed by Halcrow. All soils were successfully treated and retained onsite. In addition an estimated 1,000m3 of contaminated groundwater was treated in the stabilisation process.
Picture shows Ex-Situ E-Clay Stabilisation:
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November 2011
Working with Jones Brothers (Henllan) at a metal processing facility in South Wales, Envirotreat developed a remediation strategy to enable contaminated waste resulting from water treatment processes / arisings from onsite development and manufacturing by-products to be treated and utilised on site for development purposes (as a replacement for import virgin aggregate).
Picture depicts reuse of treated material as a batter for an existing retaining wall:
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October 2011
Working with Chalcroft, Envirotreat designed and implemented a remediation strategy to enable the residential development of a former petrol filling station in Norfolk. Envirotreat developed a suitable remediation strategy to satisfy the requirements of the Council / planners, the NHBC and the Environment Agency. Envirotreat undertook all aspects of the remediation works including removal of tanks (including cleaning and validation), validation of excavations following excavation of contaminated soils, E-Clay stabilisation of hydrocarbon impacted soils & encountered groundwater prior to re-emplacement on site. In addition Envirotreat implemented remediation measures to mitigate risks from a tidal creek (considered to be a preferential pathway) and also installed a barrier to minimise recontamination of the site. Envirotreat obtained all the necessary statutory approvals to enable the development to proceed.
Picture shows one of the tanks remediated onsite:
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September 2011

Working with Card Geotechnics, Envirotreat provided design, technical support and supervision for the installation of an E-Clay Reactive Barrier to protect both groundwater and the adjoining SSSI estuary from contamination associated with a former gas works.

Picture shows barrier installation:

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July 2011
Provided design and technical support to remediate a former storage site in East Anglia, contaminated with asbestos containing material and potential hydrocarbon contamination associated with fly tipping, maximised retention on site by chemical and physical stabilisation
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May 2011

Working with Chase Commercial and GIP, Envirotreat implemented a remediation strategy designed to support the redevelopment of several industrial / commercial units within Warwickshire. This was a joint project between Envirotreat Technologies Ltd and Onsite Surveys Ltd. The units through previous industrial usage were contaminated with hydrocarbon contamination (including chlorinated hydrocarbons as well as total petroleum hydrocarbons). The scheme proposed consisted of E-Clay stabilisation of identified contamination hotspots both outside and within the units (under the existing floor slab) coupled with the design / implementation of an E-Clay Permeable Barrier to protect a sensitive surface water receptor at the site boundary. The innovative approach enabled the units to be fully refurbished as opposed to demolition to enable more traditional remediation approaches.

Hydrocarbon picture shows impacted soils excavated outside the unit

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April 2011
 

Working with Mason Evans in Scotland, Envirotreat were able to design and implement an economically viable integrated remediation strategy for a former gas works in St Andrews. Off-site disposal costs were considered prohibitory, even though the site was relatively small in area, in itself no more than 25m by 25m. The site encompassed approximately two thirds of the former gas holder and considerable residual contamination elsewhere on site. The site was situated right next to a sensitive burn which feeds into the sea, on this basis impact of controlled waters was considered crucial to the success of the remediation strategy. The Envirotreat remediation strategy consisted of E-Clay stabilisation of the grossly impacted soils within the gas holder, together with the provision of a low permeability barrier to minimise recontamination of the treated soils from the remaining third of the gas holder under the neighbouring site. An E-Clay reactive barrier was designed and installed along the site adjoining the burn to further protect the burn from resident contamination.

Picture showing line of former gas tank and the contaminated ground inside.

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Working closely with Hallam’s of Leicester Envirotreat were able to offer a unique remediation strategy for the remediation of a former steel works to facilitate a new commercial development for the site . Several remediation strategies were considered which involved either the treatment or disposal of several thousand cubic metres of hydrocarbon impacted soils beneath the existing floor slab. Envirotreat were able to design and gain approval for the construction of an E-Clay Permeable Reactive Barrier to protect off-site receptors. The resultant remediation costs were a fraction of the associated treatment / disposal costs and saved further cost and time by negating the need to excavate and remove from site the existing foundry floor slab. Envirotreat were able to demonstrate the success of the remediation by groundwater monitoring following remediation.

Former steel works site.(click to view)

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Envirotreat working with Hallams of Leicester have completed the remediation of the former gas works in Stamford in Lincolnshire, to enable a residential development. The council part of the site was remediated many years ago leaving the remaining part of the gas works un-remediated. Envirotreat working closely with the council and the local Environment Agency developed a remediation strategy which satisfied all parties involved. The remediation strategy involved the E-Clay stabilisation of grossly impacted soils remaining on-site associated with the former gas holder, gas purifier and other redundant structures. Envirotreat were able to demonstrate the effectiveness of the remediation by undertaking leachability analysis of the treated soils and with the installation and monitoring of groundwater monitoring wells following remediation.

Picture shows former gas holder at the site.

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Envirotreat were commissioned by the Hellens Group to undertake remediation of contaminated sediments at Stewart Park, Middlesbrough. One part of the overall regeneration scheme for Stewart Park involves the regeneration of three ornamental lakes which form part of a sustainable urban drainage system for the park and surrounding area. To increase the capacity of lakes, it was proposed that the sediment which had accumulated over many years be removed and the lakes expanded. Analysis indicated the sediments to be hazardous and therefore requiring disposal at a hazardous landfill, following pre-treatment on site. Envirotreat were able to deliver a remediation strategy which involved the chemical and physical stabilisation of their contaminated sediments by E-Clay to enable their re-use on site.

Picture shows excavation of contaminated sediments at Stewart Park

 

Legislative news – Landfill Tax escalator sees the standard Landfill Tax rise to a rate of £56 per tonne from 1 April 2011 to 31 March 2012, with further increases to:

  • £64 per tonne on 1 April 2012
  • £72 per tonne on 1 April 2013
  • £80 per tonne on 1 April 2014

Changes to the Deployment of Mobile Treatment Licence (Environmental Permits) see charges per application introduced.

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Envirotreat (Scotland) Limited is formed. January 2011

 

Envirotreat Technologies Ltd move into Scotland and form Envirotreat (Scotland) Ltd. This company has been formed to tackle the ever growing Scottish market and to enhance our presence in Scotland.

Envirotreat Scotland is committed to providing cost effective, sustainable, proven remediation solutions to developers operating within Scotland. Working closely with Envirotreat Technologies Ltd and Onsite Surveys Ltd we are confident that we can solve any contaminated land issues.

Traditionally remediation has consisted of source removal by “dig n dump” (excavation and removal to landfill), increasingly this is no longer an option, mainly as a consequence of escalating Landfill Tax (currently at £56/tonne) but also due to the greater emphasis on the whole sustainability of construction with the introduction of BREEAM and Waste Management Plans. Significantly the landfill tax exemption on contaminated soils will be withdrawn in April 2012. Envirotreat Scotland are able to offer alternatives to this approach through a range of unique patented remediation technologies to address many of the contamination problems expected to be encountered whilst developing brownfield sites.

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January 2011
Having been approached by Ash Remediation for a specialist remediation solution to treat dissolved petroleum hydrocarbon contamination in groundwater, Envirotreat commenced design work for an E-Clay Reactive Barrier to enable future re development of Brownfield land next to the Tees River.
December 2010

 

Having been approached by Ash Remediation for a specialist remediation solution for treating contaminated Gas Holder Waste at a former gas works in Manchester. Envirotreat were able to demonstrate treatability through a range of laboratory trials. Envirotreat were able to reduce leachability of a range of contaminants of concern (including benzene, naphthalene, cyanide and ammonium) as well as producing a geotechnical product suitable for re-use. The works were undertaken by Ash Remediation.

Picture shows “Tarry” gas works waste following treatment.

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November 2010

 

Envirotreat have completed an innovative waste treatment project for a South Wales manufacturing company. The waste product is a by-product of their water treatment facility. The waste was considered a special waste on the basis of its high leachable heavy metal content. Envirotreat were able crush and treat the waste with an E-Clay specifically suited to the stabilisation of heavy metal contamination, producing a material that met local landfill criteria, this resulted in a significant saving to the client.

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September 2010
New Commercial Development – Glasgow.

 

Envirotreat, along with Onsite Surveys Ltd complete the remediation of a site for a new commercial development on-behalf of South Lanarkshire Council, working closely with Mason Evans Partnership. Historically the site had been used for various industrial purposes, resulting in most of the site having significant hydrocarbon contamination. Envirotreat were able to demonstrate the efficacy of the proposed E-Clay stabilisation by undertaking a series of treatability trials. The overall remediation strategy was designed to protect both human health and groundwater receptors. Leachate analysis of treated soils and post remediation monitoring of groundwater was undertaken to demonstrate the successful remediation of the site.

Representatives from the Local Authority, Main Contractor (LM Construction), Architects (McLennan Partnership), Environment Consultants (Mason Evans Partnership), Structural Engineers (Odin) and Envirotreat. (click to view full image)

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Envirotreat Technologies joins forces with Scottish Civils Company to tackle the Scottish Market!

Envirotreat Technologies are pleased to announce a new joint venture partnership with civil engineering contractors Onsite Surveys Ltd to help deliver projects throughout Scotland and the UK. This partnership allows us the capability to not only design remediation strategies, but also to deliver the projects on a complete design and build basis. The client can now be given land which is “ready to develop”, at a cost known from the outset.

We have already complete 2 projects in Scotland and 1 in England under this partnership, all within budget and to the agreed programme of works. We are very optimistic in the partnership for the future.