Quedgeley, Gloucester

March 2024

RML were commissioned to carry out a Site Investigation for Vodafone at a site in Quedgeley, Gloucester.

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 2 No. Light Percussion Boreholes, 2 No. Concrete Cores, 2 No. Drive-in-Sampler Boreholes, MEXE Probe CBR Tests, and Land-Borne Gas and Water monitoring were undertaken as part of the investigation.

Ground Conditions

According to information published by British Geological Survey (BGS) the underlying geology is shown as being the Lower Lias of the Lower Jurassic Period. Superficial River Severn Terrace Gravels lie close to the east of the site.

Laboratory Testing

Natural Moisture Contents, Atterberg Limits, Quick Undrained Triaxial Compression Tests, Particle Size Distribution, pH and sulphates, Chemical Analysis- soil, Waste Acceptance Criteria (WAC) and Asbestos identification were the Laboratory tests undertaken for the project.

Chancel Street, Southwark, London

March 2024

RML carried out both a Phase I Desk Study and Phase II Site Investigation for a demolition of an existing two storey building and erection of a seven storey mixed use building and commercial floorspace.

Walkover Survey

A walkover survey was carried out by an RML Engineer to establish if contamination is present from any undocumented practice or industrial use of the land and surrounding land and if necessary to confirm the accuracy of the information obtained from elsewhere as part of the Preliminary Risk Assessment (PRA) data gathering process . A visual assessment of the land to check for signs of industrial activity, landfilling, fly tipping , fuel storage, fuel tanks, asbestos related materials or any land contamination was undertaken and a photographic record made to provide evidence to show the condition of the land at the time of the Walkover Survey.

Phase 1 Environmental Risk Assessment

Environmental data, comprising geo-environmental hazards, hydrology and hydrogeology, was obtained for the current site covering an area of up to 1000m from the site boundary.

Historical Maps

Historical Ordnance Survey maps were also obtained for the site, as part of the PRA data gathering process. These maps were used to inform of potential historical contaminative processes.

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 1 No. Cable Percussion borehole, 4 No. Hand Excavated Trial Pits, On-site UXO support were undertaken at the site. Monitoring installations were subsequently fitted within the boreholes to facilitate land-borne gas monitoring.

Laboratory Testing

Natural Moisture Contents, Atterberg Limits, Undrained Triaxial Compression Tests, Particle Size Distribution Tests, pH & sulphate tests, chemical analysis and Asbestos Identifications were undertaken for the project.

Sovereign Harbour Retail Park, Eastbourne

February 2024

RML carried out both a Phase I Desk Study and Phase II Site Investigation for the demolition of existing buildings on the site and construction of two separate drive-thru ‘pods’ together with associated landscaping and parking.

Walkover Survey

A walkover survey was carried out by an RML Engineer to establish if contamination is present from any undocumented practice or industrial use of the land and surrounding land and if necessary to confirm the accuracy of the information obtained from elsewhere as part of the Preliminary Risk Assessment (PRA) data gathering process . A visual assessment of the land to check for signs of industrial activity, landfilling, fly tipping , fuel storage, fuel tanks, asbestos related materials or any land contamination was undertaken and a photographic record made to provide evidence to show the condition of the land at the time of the Walkover Survey.

Phase 1 Environmental Risk Assessment

Environmental data, comprising geo-environmental hazards, hydrology and hydrogeology, was obtained for the current site covering an area of up to 1000m from the site boundary.

Historical Maps

Historical Ordnance Survey maps were also obtained for the site, as part of the PRA data gathering process. These maps were used to inform of potential historical contaminative processes.

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 3 No. Cable Percussion boreholes, 6 No. Drive-in-sampler Boreholes, BRE 365 Soil Infiltration Tests and MEXE Probe CBR Tests were undertaken at the site. Monitoring installations were subsequently fitted within the boreholes to facilitate land-borne gas monitoring.

Laboratory Testing

Natural Moisture Contents, Atterberg Limits, Undrained Triaxial Compression Tests, Particle Size Distribution Tests, pH & sulphate tests, chemical analysis, Waste Acceptance Criteria (WAC) and Asbestos Identifications were undertaken for the project.

Portsmouth Road, Kingston

January 2024

RML were commissioned to carry out a Site investigation for a demolition of existing buildings and construction of a two-storey building, including basement level, providing two office units and six residential units, together with the associated access, car parking and landscaping.

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 5 No. Light Percussion Boreholes, 6 No. Hand Excavated Trial Pits, Ground Water Sampling and Land-Borne Gas and Water monitoring were undertaken as part of the investigation.

Ground Conditions

According to information published by British Geological Survey (BGS) the underlying geology is shown as being Recent Langley Silt overlying Kempton Park Gravel (River Thames Terrace Deposits) over London Clay of the Eocene Period.

Laboratory Testing

Natural Moisture Contents, Quick Undrained Triaxial Compression Tests, Particle Size Distribution, pH and sulphates, Chemical Analysis- Soil & Water, Hazardous Waste Classification tests, Waste Acceptance Criteria (WAC) and Asbestos identification were the Laboratory tests undertaken for the project.

Lower Radley, Abingdon

January 2024

RML were commissioned to carry out a Site Investigation, together with laboratory testing, in order to provide information to assist rising main design and inform of any potential soil contamination.

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 2 No. Rotary Core Boreholes, 4 No. Drive-in-sampler boreholes and Land-Borne Gas and Water monitoring were undertaken as part of the investigation.

Ground Conditions

According to information published by British Geological Survey (BGS) the underlying geology along the route varies from north to south, with superficial outcrops of Summertown-Radley Sand and Gravel Member in the northern portion and Northmoor Sand and Gravel Member in the southern portion of the route. Bedrock deposits vary from Kingston Formation (Sandstone) in the northern portion, to Standford Formation (Limestone) in the middle portion and then Ampthill and Kimmeridge Clay Formation in the southern portion of the route. Possible superficial deposits of Alluvium encroach into the eastern portion of the route.

Laboratory Testing

Natural Moisture Contents, Atterberg Limits, Quick Undrained Triaxial Compression Tests, Particle Size Distribution, pH and sulphates, Chemical Analysis- soil, Hazardous Waste Classification tests, Waste Acceptance Criteria (WAC) and Asbestos identification were the Laboratory tests undertaken for the project.

St. Johns Road, Harrow, London

December 2023

RML carried out both a Phase I Desk Study and Phase II Site Investigation for the demolition of an existing building on the site and construction of hotel accommodation (Use Class C1) and construction of basement level; ancillary restaurant and conference rooms (Use class E); together with associated bin store; landscaping and parking.

Walkover Survey

A walkover survey was carried out by an RML Engineer to establish if contamination is present from any undocumented practice or industrial use of the land and surrounding land and if necessary to confirm the accuracy of the information obtained from elsewhere as part of the Preliminary Risk Assessment (PRA) data gathering process . A visual assessment of the land to check for signs of industrial activity, landfilling, fly tipping , fuel storage, fuel tanks, asbestos related materials or any land contamination was undertaken and a photographic record made to provide evidence to show the condition of the land at the time of the Walkover Survey.

Phase 1 Environmental Risk Assessment

Environmental data, comprising geo-environmental hazards, hydrology and hydrogeology, was obtained for the current site covering an area of up to 1000m from the site boundary.

Historical Maps

Historical Ordnance Survey maps were also obtained for the site, as part of the PRA data gathering process. These maps were used to inform of potential historical contaminative processes.

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 1 No. Cable Percussion borehole, 5 No. Drive-in-sampler Boreholes, 3 No. Hand Excavated Trial Pits and MEXE Probe CBR Tests were undertaken at the site. Monitoring installations were subsequently fitted within the boreholes to facilitate land-borne gas monitoring.

Laboratory Testing

Natural Moisture Contents, Undrained Triaxial Compression Tests, pH & sulphate tests, chemical analysis, Waste Acceptance Criteria (WAC) and Asbestos Identifications were undertaken for the project.

Former Hawley Hurst School, Camberley

November 2023

RML were commissioned to carry out a Site investigation for a demolition of some existing buildings and construction of a single-storey four classroom building, two-storey science block and single-storey school café building and associated landscaping.

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 1 No. Cable Percussion Borehole, 4 No. Light Percussion boreholes, BRE 365 soil infiltration Tests, MEXE probe CBR Tests and Land-Borne Gas and Water monitoring were undertaken as part of the investigation.

Ground Conditions

According to information published by British Geological Survey (BGS) the underlying geology at the site is shown as being the Camberley Sand Formation (Barton Sand) of the Eocene Period.

Laboratory Testing

Particle Size Distribution, pH and sulphates, Chemical Analysis- soil and Asbestos identification were the Laboratory tests undertaken for the project.

Stratford Bus Station, Great Eastern Road

November 2023

RML were commissioned to carry out a Site investigation for a extension of the existing Bus Station welfare facilities in Stratford.

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 5 No. Concrete Cores, 1 No. Window sampler borehole, 2 No. Hand Auger Boreholes, 2 No. Hand Excavated Trial pits and MEXE probe CBR Tests were undertaken as part of the investigation.

Ground Conditions

According to information published by British Geological Survey (BGS) the underlying geology at the site is shown as being Alluvium of the Quaternary Period overlying the Lambeth Group formerly (Woolwich and Reading Formations) of the Paleogene Period.  

Laboratory Testing

Natural Moisture Contents, Atterberg Limits, Particle Size Distribution, Quick Undrained Triaxial Compression Tests, pH and sulphates, Chemical Analysis- soil, Unconfined Compression Tests, Waste Acceptance Criteria (WAC) Tests and Asbestos identification were the Laboratory tests undertaken for the project.

Chichester College, Chichester

October 2023

RML were commissioned to carry out a Site Investigation for a construction of a new four-storey building with associated landscaping, together with an additional  compound area including a single-storey building with parking, storage and an electricity sub-station.

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 2 No. Cable Percussion Boreholes, 3 No. Drive-in-sampler boreholes, Plate Load Bearing Tests and Land-Bourne Gas and Water Monitoring were undertaken as part of the investigation.

Ground Conditions

According to information published by British Geological Survey (BGS) the underlying geology at the site is shown as being Recent River Terrace Gravels overlying London Clay of the Eocene Period with the boundaries of the underlying Lambeth Group and Chalk lie close to the south-west of the site.

Laboratory Testing

Natural Moisture Contents, Atterberg Limits, Particle Size Distribution, Quick Undrained Triaxial Compression Tests, pH and sulphates, Chemical Analysis- soil, Hazardous Waste Classification Tests, Waste Acceptance Criteria (WAC) and Asbestos identification were the Laboratory tests undertaken for the project.

Wall Grange to Ladderedge Resilience Main

September 2023

RML were commissioned to carry out a Site investigation for a new Resilience Main for Severn Trent, running between Wall Grange and Ladderedge, Leek, Staffordshire.

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 5 No. Rotary Core Boreholes were undertaken as part of the investigation.

Ground Conditions

According to information published by British Geological Survey (BGS) the underlying geology comprised the Morridge Formation and Chester Formation from the Triassic Period.

Laboratory Testing

Waste Acceptance Criteria (WAC) tests were the Laboratory tests undertaken for the project.

Premier Inn Wembley Park

August 2023

RML were commissioned to carry out a Site investigation to provide information to assist in the repair or replacement of the existing car park construction owing to excessive settlement.  

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 62 No. Dynamic Probe Tests (DPSH), 14 No. Drive-in-sampler boreholes and Reinstatement were undertaken as part of the investigation.

Ground Conditions

According to information published by British Geological Survey (BGS) the underlying geology at the site is shown as being Alluvium overlying London Clay of the Eocene Period.

Laboratory Testing

Chemical Analysis, Waste Acceptance Criteria (WAC) Tests and Asbestos Identification were the Laboratory tests undertaken for the project.

Northend Trading Estate, Erith

August 2023

RML were commissioned to carry out a Site Investigation to provide information on the existing road make-up and underlying sub-soil conditions at this site to assist the Consulting Engineers to establish the load carrying capacity of the ramped concrete entrance road.

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 4 No. Concrete Cores, 4 No. Drive-in-sampler boreholes, MEXE Probe CBR Tests and fast setting reinstatement were undertaken as part of the investigation.

Ground Conditions

According to information published by British Geological Survey (BGS) the underlying geology at the site is shown as being Recent Crayford Silt Member over lying Thanet Sand (Lambeth Group) of the Palaeocene Period overlying Upper Chalk of the Upper Cretaceous Period.

Laboratory Testing

Natural Moisture Contents, Particle Size Distribution, Quick Undrained Triaxial Compression Tests and Unconfined Compression Tests were the Laboratory tests undertaken for the project.

Princess Anne Hospital, Southampton

August 2023

RML carried out both a Phase I Desk Study and Phase II Site Investigation for construction of a new generator compound and retaining wall.

Walkover Survey

A walkover survey was carried out by an RML Engineer to establish if contamination is present from any undocumented practice or industrial use of the land and surrounding land and if necessary to confirm the accuracy of the information obtained from elsewhere as part of the Preliminary Risk Assessment (PRA) data gathering process . A visual assessment of the land to check for signs of industrial activity, landfilling, fly tipping , fuel storage, fuel tanks, asbestos related materials or any land contamination was undertaken and a photographic record made to provide evidence to show the condition of the land at the time of the Walkover Survey.

Phase 1 Environmental Risk Assessment

Environmental data, comprising geo-environmental hazards, hydrology and hydrogeology, was obtained for the current site covering an area of up to 1000m from the site boundary.

Historical Maps

Historical Ordnance Survey maps were also obtained for the site, as part of the PRA data gathering process. These maps were used to inform of potential historical contaminative processes.

Field Work

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 1 No. Cable Percussion borehole and 1 No. Hand Excavated Trial Pit were undertaken at the site. Monitoring installations were subsequently fitted within the boreholes to facilitate land-borne gas monitoring.

Laboratory Testing

Natural Moisture Contents, Particle Size Distribution Tests, Quick Undrained Triaxial Compression Tests, pH & sulphate tests, chemical analysis, Waste Acceptance Criteria (WAC) tests and Asbestos Identifications were undertaken for the project.

Station Road Rising Main, Little Marlow

July 2023

RML were commissioned to carry out a Site investigation for a proposed rising main between Marlow Rugby Union Football Club and the Thames Water Little Marlow Treatment Works.

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 9 No. Light Percussion Boreholes and Land-Borne Gas & Groundwater Monitoring were undertaken as part of the investigation.

Ground Conditions

According to information published by British Geological Survey (BGS) the underlying geology at the site is shown as being recent Alluvium and/or recent Shepperton Gravel (River Thames Terrace Deposits) overlying Upper Chalk of the Cretaceous Period.

Laboratory Testing

Natural Moisture Contents, Atterberg Limits, Particle Size Distribution, Quick Undrained Triaxial Compression Tests, Chemical Analysis for soil & water, Hazardous Waste Classification Tests, Waste Acceptance Criteria Tests (WAC), Asbestos Identifications and pH and Sulphate Tests were the Laboratory tests undertaken for the project.

Hackney Wick, London

July 2023

RML were commissioned to carry out a Site investigation for a demolition of existing structures and construction of ground plus 7 storey building comprising hotel (Class C1) and ground floor commercial uses (Class E) with associated landscaping, cycle parking and plant.

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. On-Site UXO Report, 3 No. Sonic Coring Boreholes, 5 No. Hand Excavated Trial Pits, Land-Borne Gas & Groundwater Monitoring and Photoionization Detector (PID) Monitoring were undertaken as part of the investigation.

Ground Conditions

According to information published by British Geological Survey (BGS) the underlying geology at the site site is shown as being Recent Alluvium overlying Taplow Gravel (River Thames Terrace Deposits) overlying the Lambeth Group of the Palaeocene Period.

Laboratory Testing

Natural Moisture Contents, Particle Size Distribution, Quick Undrained Triaxial Compression Tests, Chemical Analysis for soil & water, Waste Acceptance Criteria (WAC) Tests, Asbestos Identifications and pH and Sulphate Tests were the Laboratory tests undertaken for the project.

Hillbury Road, Warlingham

June 2023

RML were commissioned to carry out a Site investigation for a demolition of an existing dwelling and construction of two new, two-storey, properties with habitable roof spaces, together with associated car parking, access and landscaping.

Field Work

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 2 No. Light Percussion Boreholes, Falling Head Permeability tests and Land-Borne Gas and Groundwater monitoring were undertaken as part of the investigation.

Ground Conditions

According to information published by British Geological Survey (BGS) the underlying geology is shown as being Clay-with-Flints overlying Upper Chalk of the Upper Cretaceous Period.

Laboratory Testing

Natural Moisture Contents, Atterberg Limits, Quick Undrained Triaxial Compression Tests, pH and Sulphates, Chemical Analysis- soil and Asbestos identifications were the Laboratory tests undertaken for the project.

Sterling House, Loughton

June 2023

RML were commissioned to carry out a Site investigation to obtain information on the concrete slab, sub-soil conditions and existing foundations at this site, together with some laboratory testing, in order to provide baseline information for subsequent foundation design by others.

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 7 No. Concrete Cores, 1 No. Dual Sonic/Rotary Coring Borehole, 3 No. Drive-in-sampler Boreholes, 2 No. Mechanically Excavated Trial Pits and MEXE Probe CBR tests were undertaken as part of the investigation.

Ground Conditions

According to information published by British Geological Survey (BGS) the underlying geology at the site site is shown as being London Clay of the Eocene Period.

Laboratory Testing

Natural Moisture Contents, Atterberg Limits, Quick Undrained Triaxial Compression Tests, Unconfined Compression Tests, Chemical Analysis, Waste Classification Tests, Asbestos Identifications and pH and Sulphate Tests were the Laboratory tests undertaken for the project.

Industrial Estate, Romsey

June 2023

RML were commissioned to carry out a Site investigation for the demolition of existing buildings and construction of new, single-storey, industrial units.

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 1 No. Cable Percussion Borehole, 3 No. Light Percussion Boreholes and Land-Borne Gas and Groundwater Monitoring were undertaken as part of the investigation.

Ground Conditions

According to information published by British Geological Survey (BGS) the underlying geology at the site site site is shown as being recent Alluvium overlying recent River Terrace Deposits overlying the Wittering Formation (Bracklesham Group) of the Palaeogene Period.

Laboratory Testing

Natural Moisture Contents, Atterberg Limits, Quick Undrained Triaxial Compression Tests, Particle Size Distribution, Chemical Analysis, Asbestos Identifications and pH and Sulphate Tests were the Laboratory tests undertaken for the project.

Vale School, Worthing

May 2023

RML were commissioned to carry out a Site investigation to establish the condition and profiles of existing foundations to perimeter fence posts as well as perimeter edging to an existing pitch.

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 4 No. Drive-in-sampler Boreholes, 9 No. Hand Excavated Trial Pits, MEXE Probe CBR Tests, and Land-Borne Gas and Water monitoring were undertaken as part of the investigation.

Ground Conditions

According to information published by British Geological Survey (BGS) the underlying geology is shown as being on the boundary of Recent Head Deposits overlying the Upper and Middle Chalk (Newhaven Chalk) of the Upper Cretaceous Period.  

Laboratory Testing

Quick Undrained Triaxial Compression Tests, Chemical Analysis- soil, Waste Classification Test and asbestos identification were the Laboratory tests undertaken for the project.

Bramber Primary School, Worthing

May 2023

RML were commissioned to carry out a Site investigation to establish the condition and type of existing pitch construction makeup, drainage construction including land drains and soakaways, to determine ground conditions and geotechnical properties of the subsoil for pitch construction design including soakaway design and also to investigate the environmental characteristics of the ground including contamination testing, gas/groundwater monitoring and waste acceptance criteria.

Field Work

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 3 No. Drive-in-sampler Boreholes, 8 No. Mechanically Excavated Trial Pits, MEXE Probe CBR tests, BRE 365 Soil Infiltration Tests and Land-Borne Gas and Groundwater Monitoring were undertaken as part of the investigation.

Ground Conditions

According to information published by British Geological Survey (BGS) the underlying geology at the site site is shown as being Recent Head Deposits overlying the Upper and Middle Chalk (Tarrant Chalk Member) of the Upper Cretaceous Period.

Laboratory Testing

Particle Size Distribution, Quick Undrained Triaxial Compression Tests, Chemical Analysis, Waste Classification Tests, Asbestos Identifications and pH and Sulphate Tests were the Laboratory tests undertaken for the project.

Cinque Ports Way WPS to Hastings and Bexhill

April 2023

RML were commissioned to carry out a Site investigation for to provide further information on the sub-soil conditions at points along the a proposed water main route, together with laboratory testing, in order to provide information to assist foundation design, potential contamination and the choice of pipe materials.

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 6 No. Light Percussion Boreholes, 1 No. Drive-In-Sampler Borehole and Land-borne Gas Monitoring were undertaken as part of the investigation.

Ground Conditions

According to information published by British Geological Survey (BGS) the underlying geology at the site is shown as being recent Alluvium and/or recent Storm Gravel Beach Deposits overlying the Ashdown Beds of the Cretaceous Period.

Laboratory Testing

Natural Moisture Contents, Atterberg Limits, Quick Undrained Triaxial Tests, Particle Size Distribution, Chemical Analysis, Waste Classification Tests, Asbestos Identification and pH and Sulphate Tests were the Laboratory tests undertaken for the project.

Oakley Green Trunk Main, Windsor

April 2023

RML were commissioned to carry out a Site investigation for a new foul water rising main crossing beneath the River Thames.

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 2 No. Cable Percussion Boreholes, 3 No. Light Percussion Boreholes and Groundwater Monitoring were undertaken as part of the investigation.

Ground Conditions

According to information published by British Geological Survey (BGS) the underlying geology at the site site is shown as being Recent Kempton Park Gravel (River Thames Terrace Deposits) overlying London Clay of the Eocene Period. The southern side of the River Thames at Windsor Marina is shown to have Recent Alluvium overlying the Kempton Park Gravel.

Laboratory Testing

Natural Moisture Contents, Particle Size Distribution, Quick Undrained Triaxial Compression Tests, Chemical Analysis, Waste Classification Tests, Asbestos Identifications and pH and Sulphate Tests were the Laboratory tests undertaken for the project.

Kennedy Road, Shrewsbury

March 2023

RML carried out both a Phase I Desk Study and Phase II Site Investigation for the demolition of an existing property and construction of a new, low-rise, property.

Walkover Survey

A walkover survey was carried out by an RML Engineer to establish if contamination is present from any undocumented practice or industrial use of the land and surrounding land and if necessary to confirm the accuracy of the information obtained from elsewhere as part of the Preliminary Risk Assessment (PRA) data gathering process . A visual assessment of the land to check for signs of industrial activity, landfilling, fly tipping , fuel storage, fuel tanks, asbestos related materials or any land contamination was undertaken and a photographic record made to provide evidence to show the condition of the land at the time of the Walkover Survey.

Phase 1 Environmental Risk Assessment

Environmental data, comprising geo-environmental hazards, hydrology and hydrogeology, was obtained for the current site covering an area of up to 1000m from the site boundary.

Historical Maps

Historical Ordnance Survey maps were also obtained for the site, as part of the PRA data gathering process. These maps were used to inform of potential historical contaminative processes.

Site Works

3 No. Light Percussion boreholes, 1 No. Drive-in-sampler Borehole, 1 No. Mechanically excavated Trial Pit, 1 No. BRE 365 Soil Infiltration test, 2 No. Shallow Soil Infiltration Tests and MEXE Probe CBR Tests were undertaken at the site.

Laboratory Testing

Natural Moisture Contents, Atterberg Limits, Quick Undrained Triaxial Compression Tests, Particle Size Distribution Tests, pH & sulphate tests, Chemical Analysis, Waste Classification Tests and Asbestos identifications were undertaken for the project.

Letchworth to Royston Trunk Main

February 2023

RML were commissioned to carry out a Site investigation for a information on the sub-soil conditions at points along a proposed water main route, together with laboratory testing, in order to provide information to assist foundation design, potential contamination and the choice of pipe materials.

Field Work

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 14 No. Light Percussion Boreholes, 4 No. Drive-in-sampler Boreholes and 1 No. Sonic Coring Borehole was undertaken across the route.

Ground Conditions

According to information published by British Geological Survey (BGS) the underlying geology at the site site is the Holywell Nodular Chalk Formation and the New Pit Chalk Formation (Middle Chalk). Superficial deposits were sporadic across the route and if found to be present would comprise of either Head Deposits or Glacial Till.

Laboratory Testing

Natural Moisture Contents, Atterberg Limits, Particle Size Distribution, Quick Undrained Triaxial Compression Tests, Chemical Analysis, Asbestos Identification and pH and Sulphate Tests were the Laboratory tests undertaken for the project.

Thurlow Park, Pagoda Grove, Norwood

January 2023

RML carried out both a Phase I Desk Study and Phase II Site Investigation for construction of a terrace of eight, three bedroom, town houses, together with associated private garden areas, communal landscaped areas, retaining structures and car parking facilities.

Walkover Survey

A walkover survey was carried out by an RML Engineer to establish if contamination is present from any undocumented practice or industrial use of the land and surrounding land and if necessary to confirm the accuracy of the information obtained from elsewhere as part of the Preliminary Risk Assessment (PRA) data gathering process . A visual assessment of the land to check for signs of industrial activity, landfilling, fly tipping , fuel storage, fuel tanks, asbestos related materials or any land contamination was undertaken and a photographic record made to provide evidence to show the condition of the land at the time of the Walkover Survey.

Phase 1 Environmental Risk Assessment

Environmental data, comprising geo-environmental hazards, hydrology and hydrogeology, was obtained for the current site covering an area of up to 1000m from the site boundary.

Historical Maps

Historical Ordnance Survey maps were also obtained for the site, as part of the PRA data gathering process. These maps were used to inform of potential historical contaminative processes.

Site Works

4 No. Light Percussion boreholes, 6 No. Drive-in-sampler Boreholes, Falling Head Permeability Tests and MEXE Probe CBR Tests were undertaken at the site. Monitoring installations were subsequently fitted within the boreholes to facilitate land-borne gas monitoring.

Laboratory Testing

Natural Moisture Contents, Atterberg Limits, Quick Undrained Triaxial Compression Tests, pH & sulphate tests, chemical analysis and asbestos identifications were undertaken for the project.

Worthing Integrated Care Center

January 2023

RML were commissioned to carry out a borehole investigation to assist in the design of a piled foundation.

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 2 No. Sonic Coring Boreholes were drilled at the site to depth of 30m.

Ground Conditions

According to information published by British Geological Survey (BGS) the underlying geology at the site is Recent Brickearth overlying Upper and Middle Chalk of the Cretaceous Period.

Laboratory Testing

Natural Moisture Contents, Atterberg Limits, Particle Size Distribution, Quick Undrained Triaxial Compression Tests, Chalk Density and pH and Sulphate Tests were the Laboratory tests undertaken for the project.

Telecommunications Node, Poplar

December 2022

RML were commissioned to carry out an intrusive site investigation designed to obtain information on the sub-soil conditions at this site, together with some laboratory testing, in order to provide baseline information for any subsequent foundation design by others.

UXO Report

A Detailed UXO Threat & Risk Assessment was commissioned for the site prior to intrusive work, the report concluded that the risk level for the site was ‘medium’ with the most probable UXO threat posed by WWII German HE bombs, whilst IBs (Incendiary Bomb) and British AAA (Anti-Aircraft Ammunition) projectiles (which were used to defend against German bombing raids) pose a residual threat. Consequently on-site supervision was required during intrusive work.

Site Work By Risk Management Ltd

Intrusive fieldwork consisted of On-Site-UXO Support, 1 No. Cable Percussion Borehole, 4 No. Hand Augered Boreholes and Land Borne Gas Monitoring.

Laboratory Testing

Laboratory testing included Natural Moisture Contents, Quick Undrained, Triaxial Compression Tests, pH and Sulphate Tests and Waste Acceptance Criteria (WAC).

Sandbanks Road, Poole

November 2022

RML carried out both a Phase I Desk Study and Phase II Site Investigation for the demolition of an existing office building (Class E) and ancillary building and erection of a new office (Class E) building with bin store, cycle store building with associated parking and access.

Walkover Survey

A walkover survey was carried out by an RML Engineer to establish if contamination is present from any undocumented practice or industrial use of the land and surrounding land and if necessary to confirm the accuracy of the information obtained from elsewhere as part of the Preliminary Risk Assessment (PRA) data gathering process . A visual assessment of the land to check for signs of industrial activity, landfilling, fly tipping , fuel storage, fuel tanks, asbestos related materials or any land contamination was undertaken and a photographic record made to provide evidence to show the condition of the land at the time of the Walkover Survey.

Phase 1 Environmental Risk Assessment

Environmental data, comprising geo-environmental hazards, hydrology and hydrogeology, was obtained for the current site covering an area of up to 1000m from the site boundary.

Historical Maps

Historical Ordnance Survey maps were also obtained for the site, as part of the PRA data gathering process. These maps were used to inform of potential historical contaminative processes.

Site Works

1 No. Cable Percussion borehole, 3 No. Light Percussion boreholes, 1 No. Mechanically excavated Trial Pit, 1 No. BRE 365 Soil Infiltration test, 1 No. Shallow Soil Infiltration Test and MEXE Probe CBR Tests were undertaken at the site. Monitoring installations were subsequently fitted within the boreholes to facilitate land-borne gas monitoring.

Laboratory Testing

Natural Moisture Contents, Atterberg Limits, Quick Undrained Triaxial Compression Tests, pH & sulphate tests, chemical analysis and asbestos identifications were undertaken for the project.

Chesterton Road, Cambridge

November 2022

RML were commissioned to carry out a Site investigation for a demolition of an existing building and provision of a mixed use scheme comprising 19 No. small and large HMO units.

Field Work

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 3 No. Concrete Cores, 3 No. Drive-In-Sampler Boreholes, Shallow Infiltration Tests, Falling Head Permeability Tests, Land-borne Gas Monitoring and Photoionisation Detector (PID) Monitoring were undertaken as part of the investigation.

Ground Conditions

According to information published by British Geological Survey (BGS) the underlying geology at the site comprised 2^nd River Terrace Deposits over the Gault Formation of the of the Cretaceous Period.

Laboratory Testing

Particle Size Distribution, Dynamic Headspace Analysis, Chemical Analysis, Waste Classification Tests and pH and Sulphate Tests were the Laboratory tests undertaken for the project.

Brook Street and Oxford Road Sites, High Wycombe

October 2022

RML were commissioned to carry out a Site investigation for two sites in High Wycombe. Oxford Road Site – demolition of the existing buildings and construction of a new seven-storey building, Brook Street Site – demolition of the existing buildings and construction of a new two-storey building.

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 3 No. Cable Percussion Boreholes, 3 No. Window Sampler Boreholes, MEXE Probe CBR Tests, 9 No. Hand Excavated Trial Pits, 2 No. BRE 365 Soil Infiltration Tests and Land-borne Gas Monitoring were undertaken as part of the investigation.

Ground Conditions

According to information published by British Geological Survey (BGS) the underlying geology at the site comprised Recent Alluvium deposits overlying Middle Chalk of the Cretaceous Period.

Laboratory Testing

Particle Size Distribution, Chemical Analysis, Waste Acceptance Criteria (WAC), Asbestos Identification Tests and pH and Sulphate Tests were the Laboratory tests undertaken for the project.

Reading Road, Shiplake

September 2022

RML were commissioned to carry out a Site Investigation for the construction of a new, low-rise, detached dwelling with associated access road and landscaping.

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 2 No. Cable Percussion Boreholes and 20 No. Dynamic Probes (DPSH) were undertaken across the site.

Ground Conditions

According to Information Published by British Geological survey (BGS) the underlying geology of this site site comprised Recent Taplow Gravel (River Thames Terrace Deposits) overlying Upper Chalk of the Upper Cretaceous Period.

Discussions and Recommendations

Geotechnical parameters for conventional shallow foundation design and piled foundations were discussed within the RML report and submitted to the Client.

Barwell Business Park, Chessington

September 2022

RML were commissioned to carry out a Site investigation to gather information on the existing ground
slab and underlying sub-soil conditions at this site, together with laboratory testing,
in order to assist the Consulting Engineers to confirm the safe bearing capacity of the concrete
slab.

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 4 No. Concrete Cores, 6 No. Drive-in-Sampler Boreholes and MEXE Probe CBR Tests were undertaken as part of the site investigation.

Ground Conditions

According to Information Published by British Geological Survey the underlying geology at this site comprised London Clay of the Eocene Period.

Laboratory Testing

Natural Moisture Contents, Atterberg Limits, Quick Undrained Triaxial Compression Tests and Uniaxial Compression Tests were the Laboratory tests undertaken for this project.

Blashford, Ringwood

August 2022

RML weren commissioned to carry out both a Phase I, Non-Intrusive, Desk Study and a Phase II, Intrusive, Site Investigation for the demolition of the existing dwelling and construction of a new single-storey property with two wings and an outbuilding arranged around a central courtyard.

Walkover Survey by RML Engineer

A walkover survey was carried out by an RML Engineer to establish if contamination is present from any undocumented practice or industrial use of the land and surrounding land and if necessary to confirm the accuracy of the information obtained from elsewhere as part of the Preliminary Risk Assessment (PRA) data gathering process . A visual assessment of the land to check for signs of industrial activity, landfilling, fly tipping , fuel storage, fuel tanks, asbestos related materials or any land contamination was undertaken and a photographic record made to provide evidence to show the condition of the land at the time of the Walkover Survey.

Phase I Environmental Risk Assessment

Environmental data, Comprising geo-environmental hazards, hydrology and hydrogeology was obtained for the current site covering an area of up to 1000mm from the site boundary.

Historical Maps

Historical Ordnance Survey maps were also obtained for the site, as part of the PRA data gathering process. These maps were used to inform of potential historical contaminative processes.

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 1 No. Cable Percussion Borehole, 3 No. Drive-In-Sampler Boreholes, 1 No. Hand Excavated Trial Pits and Land-borne Gas Monitoring were undertaken as part of site investigation.

Laboratory Testing

Particle Size Distribution, pH & Sulphate tests, Chemical analysis, Waste Acceptance Criteria (WAC) Tests and Asbestos Identification were the Laboratory tests undertaken as part of investigation.

Ascot Road, MAIDENHEAD

August 2022

RML were instructed to carry out a Site investigation for the demolition of an existing dwelling and construction of a new three-storey property, together with associated car parking, access and landscaping.

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 1 No. Sonic Coring Borehole, 3 No. Drive-in-Sampler Boreholes, 1 No. Falling Head Permeability Test and Land-borne Gas Monitoring.

Ground Conditions

According to Information Published by British Geological Survey (BGS) the underlying geology at this site comprised London Clay of the Eocene Period. The Lambeth Group would be expected to underlie the London Clay at the site.

Laboratory Testing

Natural Moisture Contents, Atterberg Limits, Quick Undrained Triaxial Compression Tests, Particle Size Distribution Tests, Chemical Analysis, Asbestos Identification, Waste Acceptance Criteria (WAC) Tests and pH and Sulphate Tests were the Laboratory tests undertaken for this project.

Laverstoke Lane, Whitchurch

July 2022

RML were commissioned to carry out a Site investigation for the construction of a large, detached, new property with ancillary buildings consisting of a pool and racket sports court together with associated access road and landscaping.

Filed Work

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 3 No. Light Percussion Boreholes, 6 No. Mechanically Excavated Boreholes, MEXE Probe CBR Tests, and Land-borne Gas Monitoring were undertaken as part of the site investigation.

Ground Conditions

According to Information Published by British Geological survey (BGS) the underlying geology at this site comprised the White Chalk Subgroup of the Upper Cretaceous Period.

Laboratory Testing

Chemical Analysis, Asbestos Identification and pH and Sulphate Tests are the Laboratory tests undertaken for this project.

Leacon Road, Ashford

July 2022

RML were commissioned to carry out both Phase I, Non-intrusive, Desk Study and Phase II, Intrusive, Site investigation for the extension of existing areas of concrete surfacing and the installation of new below ground drainage infrastructure.

Walkover Survey by RML Engineer

A walkover survey was carried out by an RML Engineer to establish if contamination is present from any undocumented practice or industrial use of the land and surrounding land and if necessary to confirm the accuracy of the information obtained from elsewhere as part of the Preliminary Risk Assessment (PRA) data gathering process . A visual assessment of the land to check for signs of industrial activity, landfilling, fly tipping , fuel storage, fuel tanks, asbestos related materials or any land contamination was undertaken and a photographic record made to provide evidence to show the condition of the land at the time of the Walkover Survey.

Phase I Environmental Risk Assessment

Environmental data, comprising geo-environmental hazards, hydrology and hydrogeology, was obtained for the current site covering an area of up to 1000m from the site boundary.

Historical Maps

Historical Ordnance Survey maps were also obtained for the site, as part of the PRA data gathering process. These maps were used to inform of potential historical contaminative processes.

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 12 No. Light Percussion Boreholes, MEXE Probe CBR Tests, Shallow Samples, BRE 365 Soil Infiltration Tests, and Land-borne Gas Monitoring were undertaken as part of site investigation.

Laboratory Testing

Natural Moisture Contents, Atterberg Limits, Quick Undrained Triaxial Compression Test, Particle Size Distribution, pH & Sulphates tests, Chemical analysis and Asbestos Identification were the Laboratory tests undertaken for this project.

Gladstone Road, Exeter

June 2022

RML were commissioned to carry out a Site Investigation for a new single-storey extension to the existing Waitrose Supermarket and for a new lightweight canopy in the rear car parking area.

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 3 No. Drive-In-Sampler Boreholes, MEXE Probe CBR Tests, and 3 No. Mechanically/Hand Excavated Trial Pits were undertaken as part of the investigation.

Ground Conditions

According to information published by British Geological Survey (BGS) the underlying geology at the site were recent River Terrace Deposits overlying Alphington Breccia of the Permian Period.

Laboratory Testing

Natural moisture contents, Atterberg Limits, Quick Undrained Triaxial Compression Tests, and pH and Sulphate Tests were the Laboratory tests undertaken for the project.

Belgravia, London

May 2022

RML were commissioned to carry out both a Phase I Desk study and Phase II Site investigation in Belgravia, London for the complete renovation of a building, while retaining the external facade.

Walkover Survey by RML Engineer

A walkover survey was carried out by an RML Engineer to establish if contamination is present from any undocumented practice or industrial use of the land and surrounding land and if necessary to confirm the accuracy of the information obtained from elsewhere as part of the Preliminary Risk Assessment (PRA) data gathering process . A visual assessment of the land to check for signs of industrial activity, landfilling, fly tipping , fuel storage, fuel tanks, asbestos related materials or any land contamination was undertaken and a photographic record made to provide evidence to show the condition of the land at the time of the Walkover Survey.

Phase I Environmental Risk Assessment

Environmental data, comprising geo-environmental hazards, hydrology and hydrogeology, was obtained for the current site covering an area of up to 1000m from the site boundary.

Historical Maps

Historical Ordnance Survey maps were also obtained for the site, as part of the PRA data gathering process. These maps were used to inform of potential historical contaminative processes.

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 1 No. Light Percussion Borehole, 1 No. ‘cut-down’ Cable Percussion Borehole, 1 No. Drive-In-Sampler Borehole, Falling Head Permeability Tests and Land-Borne Gas Monitoring were undertaken as part of investigation.

Laboratory Testing

Natural Moisture Content, Quick Undrained Triaxial Compression Test, Particle Size Distribution, pH & Sulphate tests, Chemical analysis, Asbestos Identification and Waste Acceptance Criteria (WAC) tests were the Laboratory tests undertaken for this project.

Tower Hamlets, Poplar

May 2022

RML were commissioned to carry out a Site Investigation for the demolition of an existing building and construction of two new build residential blocks in Tower Hamlets, Poplar.

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 3 No. Cable Percussion Boreholes, 3 No. Drive-in-sampler, Mechanically Excavated Trial pits, BRE 365 Soil Infiltration Tests, MEXE Probe CBR Tests, and Land-Borne Gas Monitoring were undertaken as part of the site investigation.

Ground Conditions

According to information published by British Geological Survey (BGS) the underlying geology at the site comprised Kempton Park Gravel (Thames Gravel Deposits) overlying London Clay of the Eocene Period.

Laboratory Testing

Natural moisture contents, Atterberg Limits, Quick Undrained Triaxial Compression Tests, Particle Distribution, pH & Sulphate tests, Chemical analysis, Asbestos Identification and Waste Acceptance Criteria (WAC) are the Laboratory tests undertaken for this project.

Sparsholt, Hampshire

April 2022

RML were instructed to carry out both a Phase I Desk study and Phase II Site investigation in Sparsholt, Hampshire for a conversion of two existing agricultural buildings to form three dwellings.

Walkover Survey by RML Engineer

A walkover survey was carried out by an RML Engineer to establish if contamination is present from any undocumented practice or industrial use of the land and surrounding land and if necessary to confirm the accuracy of the information obtained from elsewhere as part of the Preliminary Risk Assessment (PRA) data gathering process . A visual assessment of the land to check for signs of industrial activity, landfilling, fly tipping , fuel storage, fuel tanks, asbestos related materials or any land contamination was undertaken and a photographic record made to provide evidence to show the condition of the land at the time of the Walkover Survey.

Phase I Environmental Risk Assessment

Environmental data, comprising geo-environmental hazards, hydrology and hydrogeology, was obtained for the current site covering an area of up to 1000m from the site boundary.

Historical Maps

Historical Ordnance Survey maps were also obtained for the site, as part of the PRA data gathering process. These maps were used to inform of potential historical contaminative processes.

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 4 No. Light Percussion Boreholes, 6 No. Hand Excavated Trial Pits, BRE 365 Soil Infiltration Test, MEXE Probe CBR Tests, and Land-Borne Gas Monitoring were undertaken as part of site investigation.

Laboratory Testing

Chalk Density Tests, pH & Sulphate tests, Chemical analysis, Asbestos Identification and Waste Acceptance Criteria (WAC) were the Laboratory tests undertaken for this project.

Chiswick High Road, London

March 2022

RML were commissioned to carry out both a Phase I, non-intrusive, Desk Study and Phase II, intrusive, Site Investigation in Chiswick, London for a development of a New Travelodge Hotel.

Walkover Survey by RML Engineer

A walkover survey was carried out by an RML Engineer to establish if contamination is present from any undocumented practice or industrial use of the land and surrounding land and if necessary to confirm the accuracy of the information obtained from elsewhere as part of the Preliminary Risk Assessment (PRA) data gathering process . A visual assessment of the land to check for signs of industrial activity, landfilling, fly tipping , fuel storage, fuel tanks, asbestos related materials or any land contamination was undertaken and a photographic record made to provide evidence to show the condition of the land at the time of the Walkover Survey.

Phase I Environmental Risk Assessment

Environmental data, comprising geo-environmental hazards, hydrology and hydrogeology, was obtained for the current site covering an area of up to 1000m from the site boundary.

Historical Maps

Historical Ordnance Survey maps were also obtained for the site, as part of the PRA data gathering process. These maps were used to inform of potential historical contaminative processes.

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 2 No. Cable Percussion Boreholes, 4 No. Drive-in-sampler Boreholes, On-site UXO support and Land-Borne Gas Monitoring.

Laboratory Testing

Natural Moisture Contents, Atterberg Limits, Quick Undrained Triaxial Compression Tests, pH & Sulphate tests, Chemical analysis, Asbestos Identification and Waste Acceptance Criteria (WAC) tests were Laboratory tests undertaken for this project.

St Mary’s Hospital, Isle Of Wight

March 2022

RML were commissioned to carry out both a Phase I, non-intrusive, Desk study and Phase II, intrusive, Site Investigation at St Mary’s Hospital, Isle of Wight for a new single story lightweight building.

Walkover Survey by RML Engineer

A walkover survey was carried out by an RML Engineer to establish if contamination is present from any undocumented practice or industrial use of the land and surrounding land and if necessary to confirm the accuracy of the information obtained from elsewhere as part of the Preliminary Risk Assessment (PRA) data gathering process . A visual assessment of the land to check for signs of industrial activity, landfilling, fly tipping , fuel storage, fuel tanks, asbestos related materials or any land contamination was undertaken and a photographic record made to provide evidence to show the condition of the land at the time of the Walkover Survey.

Phase I Environmental Risk Assessment

Environmental data, comprising geo-environmental hazards, hydrology and hydrogeology, was obtained for the current site covering an area of up to 1000m from the site boundary.

Historical Maps

Historical Ordnance Survey maps were also obtained for the site, as part of the PRA data gathering process. These maps were used to inform of potential historical contaminative processes.

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 2 No. Light Percussion Boreholes, 2 No. Hand Auger Boreholes and Land-Borne Gas Monitoring were undertaken as part of investigation.

Laboratory Testing

Natural Moisture Contents, Atterberg Limits, Quick Undrained Triaxial Compression Tests, pH & Sulphates tests, Chemical analysis, Asbestos Identification and Waste Acceptance Criteria (WAC) tests were the Laboratory tests undertaken for this project.

Caterham, Surrey

February 2022

RML undertook a Verification Report for a development of 48 residential properties with associated private gardens, landscaped areas, hardstanding areas and access roads in Caterham, Surrey.

Site Description

The site was unoccupied and mainly comprised former rear garden areas of existing houses.

Verification Report

RML produced a Verification Report in order to assist with the discharge of planning conditions relating to the development.

Sampling Procedure

Soil samples were collected from locations randomly selected by visual inspection in
order to provide a good spread of material from across the area and
stockpiles. Soil samples were placed in appropriate containers for transport to the Risk
Management Limited in-house laboratory where they were combined, mixed, and
subdivided to produce representative composite samples.

Gravelly Hill, Birmingham

February 2022

RML were commissioned to carry out a Phase I Desk Study and Phase II Site Investigation for Vodafone at a site in Gravelly Hill, Birmingham.

Walkover Survey by RML Engineer

A walkover survey was carried out by an RML Engineer to establish if contamination is present from any undocumented practice or industrial use of the land and surrounding land and if necessary to confirm the accuracy of the information obtained from elsewhere as part of the Preliminary Risk Assessment (PRA) data gathering process . A visual assessment of the land to check for signs of industrial activity, landfilling, fly tipping , fuel storage, fuel tanks, asbestos related materials or any land contamination was undertaken and a photographic record made to provide evidence to show the condition of the land at the time of the Walkover Survey.

UXO Report

The Detailed UXO Threat & Risk Assessment concluded that the risk level for the site was ‘high’ with the most probable UXO threat posed by WWII German HE bombs, whilst IBs (Incendiary Bomb) and British AAA (Anti-Aircraft Ammunition) projectiles (which were used to defend against German bombing raids) pose a residual threat. On site UXO support was therefore coordinated for all intrusive work.

Historical Maps

Historical Ordnance Survey maps were also obtained for the site, as part of the PRA data gathering process. These maps were used to inform of potential historical contaminative processes.

Site Engineering Work

5 No. concrete cores, MEXE probe CBR tests, 2 No. Drive-in-sampler boreholes, on-site UXO support and Land-borne gas monitoring were undertaken by experienced drillers and engineers.

Laboratory Testing

Moisture contents, Atterberg Limits, Particle Size Distribution, Particle Size Distribution, Quick Undrained Triaxial Compression Tests, Uniaxial compression strength, pH & Sulphates, Chemical Analysis of soil and water and Asbestos Identification were laboratory tests undertaken for this project.

Dormansland, Lingfield

January 2022

RML were instructed to undertake a ground investigation to determine the feasibility of a deep borehole soakaway at a site in Dormansland, Lingfield.

Sonic Drilling

A Sonic core borehole was undertaken in order to investigate ground and groundwater conditions at the site. Sonic drilling is a technique that significantly reduces friction on the drill string and drill bit by using energy resonance to affect the soil structure where it contacts the drill string. This combination makes penetrating for a large range of soils much easier. Sonic drilling is most often used when the drilling is difficult and/or the integrity of the core sample is extremely important.

Soakaway testing

A Sonic borehole was drilled to investigate the feasibility of a deep borehole soakaway.

Milton Keynes

January 2022

RML carried out a Ground Investigation in Milton Keynes for Vodafone for proposed plant and retaining walls.

Walkover Survey by RML Engineer

A walkover survey was carried out by an RML Engineer to establish if contamination is present from any undocumented practice or industrial use of the land and surrounding land and if necessary to confirm the accuracy of the information obtained from elsewhere as part of the Preliminary Risk Assessment (PRA) data gathering process . A visual assessment of the land to check for signs of industrial activity, landfilling, fly tipping , fuel storage, fuel tanks, asbestos related materials or any land contamination was undertaken and a photographic record made to provide evidence to show the condition of the land at the time of the Walkover Survey.

Phase 1 Environmental Risk Assessment

Environmental data, comprising geo-environmental hazards, hydrology and hydrogeology, was obtained for the current site covering an area of up to 1000m from the site boundary.

Historical Maps

Historical Ordnance Survey maps were also obtained for the site, as part of the PRA data gathering process. These maps were used to inform of potential historical contaminative processes.

Fieldwork

Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 3 No. Concrete Cores, 5 No. Drive-in-Sampler Boreholes, MEXE Probe CBR Tests and Land-Borne Gas Monitoring were undertaken as part of site investigation.

Laboratory Testing

Natural Moisture Content, Atterberg Limits, Quick Undrained Triaxial Compression Tests, Uniaxial Compression Test, pH & Sulphates tests, Chemical analysis, Asbestos Identification and Waste Acceptance Criteria tests are the Laboratory tests undertaken for this project.

Hemel to Stonecross Trunk Main

November 2021

RML carried out a project for Affinity Water to provide information on the sub-soil conditions at points along a proposed water main route, together with laboratory testing, in order to provide information to assist foundation design and the choice of pipe materials.

Fieldwork

A total 10 No. Light Percussion boreholes were drilled across the route for the proposed Trunk Main. Standard Penetration Test (SPT) ‘N’ values were obtained at the regular intervals within the boreholes.

Ground Conditions

According to information published by the British Geological Survey (BGS) the underlying geology comprised Clay-with-Flints overlying Chalk of the Cretaceous Period.

Laboratory testing

Natural Moisture Contents, Atterberg Limits, Quick Undrained Triaxial Compression Tests, Particle Size Distribution, pH and Sulphate Tests, Asbestos Identifications, Chemical Analysis – Soil, Waste Acceptance Criteria (WAC) tests are the laboratory tests undertaken for this project.

Salford Quays, Manchester

November 2021

The investigation work at Salford Quays, Manchester for the end client Vodafone Ltd, was designed to obtain information on the existing internal slab and subsoil conditions at this site for a slab capacity check and to provide information for subsequent foundation design.

Utility Search

A Utility Search was commissioned prior to any intrusive work, with plans supplied to RML from Vodafone and United Utilities Water Limited shown to affect the site.

UXO Report

A Detailed UXO Threat & Risk Assessment was commissioned for the site prior to intrusive work, the report concluded that the risk level for the site was ‘medium’ with the most probable UXO threat posed by WWII German HE bombs, whilst IBs (Incendiary Bomb) and British AAA (Anti-Aircraft Ammunition) projectiles (which were used to defend against German bombing raids) pose a residual threat. Consequently on-site supervision was required during intrusive work.

Site Work By Risk Management Ltd

Intrusive fieldwork consisted of 2 No. concrete cores, 2 No. drive-in-sampler boreholes and 3 No. CBR tests at each location.

Laboratory Testing

Laboratory testing included Moisture Contents, Atterberg Limits, Particle Size Distribution and Quick Undrained Triaxial Compression Tests.

General Hospital, Southampton

November 2021

RML carried out a Ground Investigation at Southampton General Hospital for the NHS foundation trust to inform the design of a proposed two-storey bridge link between a new extension and the main Hospital building.

Walkover Survey

A walkover survey was carried out by an RML Engineer to establish if contamination is present from any undocumented practice or industrial use of the land and surrounding land and if necessary to confirm the accuracy of the information obtained from elsewhere as part of the Preliminary Risk Assessment (PRA) data gathering process . A visual assessment of the land to check for signs of industrial activity, landfilling, fly tipping , fuel storage, fuel tanks, asbestos related materials or any land contamination was undertaken and a photographic record made to provide evidence to show the condition of the land at the time of the Walkover Survey.

Phase 1 Environmental Risk Assessment

Environmental data, comprising geo-environmental hazards, hydrology and hydrogeology, was obtained for the current site covering an area of up to 1000m from the site boundary.

Historical Maps

Historical Ordnance Survey maps were also obtained for the site, as part of the PRA data gathering process. These maps were used to inform of potential historical contaminative processes.

Site Works

2 No. Cable Percussion boreholes up to 25m depth were undertaken at the site. Monitoring installations were subsequently fitted within the boreholes to facilitate land-borne gas monitoring.

Laboratory Testing

Particle size distribution, pH & sulphate tests, chemical analysis, asbestos identification, waste acceptance criteria (WAC) tests were undertaken for the project.

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