carillion enterprise wolverhampton phase 1 desk study report · the british standard guidance for...

Contaminated LandPhase 1 Desk StudyReport

Gamecock Barracks,Cormorant VehicleGarage

Carillion Enterprise24 Birch StreetWolverhamptonWV1 4HY

PREPARED FOR REPORT

Contaminated Land Phase 1 Desk Study ReportGamecock Barracks, Cormorant Vehicle Garage

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Document Amendment and Issue RecordRevision

Ref DateDescription of Revision Issue Date Authorised

by

A 05.12.08 First Issue 05.12.08 H. Wahab

DistributionRev.Ref

Purposeof Issue

No. ofcopies

P = Preliminary B = Bid C = Construction M = PMI I = InformationPurposeof Issue: T = Tender R = Review Other (please specify)


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Contents

1 INTRODUCTION 5

2 SITE LOCATION, DESCRIPTION AND PROPOSED DEVELOPMENT 5

3 SITE HISTORY 53.1 Historical Ordnance Survey Maps 53.2 Review 7

4 GEOLOGY 7

5 HYDROLOGY 7

6 HYDROGEOLOGY 7

7 ENVIRONMENTAL INFORMATION 87.1 General 87.2 Local Authority and Integrated Pollution Prevention and Controls 87.3 Incidents to Controlled Waters 87.4 Landfill / Waste Transfer / Waste Treatment / Disposal Sites 87.5 Hazardous Substances 87.6 Trade Directory Entries 87.7 Sensitive Land Uses 97.8 Radon 9

8 INITIAL QUALITATIVE RISK ASSESSMENT 108.1 Methodology 108.2 Risk Assessment Categorisations 11

9 CONCLUSION 13


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FIGURES

Figure 1: Site Location PlanFigure 2: Conceptual Ground Model

APPENDICES

Appendix A: Landmark Envirocheck Report


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1 IntroductionDefence Estates are proposing to construct three new buildings for storage and maintenance ofCormorant vehicles at Gamecock Barracks, Brampton, Warwickshire. TPS were commissionedby Carillion Enterprise, on behalf of Defence Estates, to produce a Desk Study Report tosupport a planning application for the proposed construction.

This report presents a review of the historic and current site activities, geology and groundconditions and environmental information relevant to the site. A human health risk assessmenthas been carried out which identifies the main geo-environmental issues that may affect thedevelopment works and the potential source – pathway - target pollutant linkages.

2 Site location, Description and ProposedDevelopmentGamecock Barracks is located approximately 3km south west of Nuneaton, Warwickshire. Thecentre of the site is located in the south west part of Gamecock Barracks at the approximateOrdnance Survey Grid Reference SP 407 881 (Figure 1). The development will comprise theconstruction of three new garages to store and maintain Cormorant vehicles.

A TPS engineer carried out a site walkover on 18th November 2008. The area underconsideration is formed by two hard standing areas made up of concrete slabs. In between thetwo areas is an access road and around the area is an access apron. The concrete slabs are ingood condition with no visible staining from oils or fuels. The site has a very slight fall to thesouth-west.

3 Site history3.1 HISTORICAL ORDNANCE SURVEY MAPS

The main source of information is taken from the historical Ordnance Survey maps dating from1888 to 2008 at scales of 1:10,560, 1:10,000 and 1:2,500. The historical maps are part of theLandmark Information Group Envirocheck Report, which is included in Appendix A of this report.

3.1.1 Warwickshire Map Published 1888 (Scale 1:2,500) and Warwickshire Map Published 1888-1890 (Scale 1:10,560)

The site is located in an area of fields and open farmland. No development is shown on thesite.


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3.1.2 Warwickshire Map Published 1903-1904 (Scale 1:2,500) and Warwickshire Map Published1904-1905 (Scale 1:10,560)

No development has occurred on or in the vicinity of the site.

3.1.3 Warwickshire Map Published 1925 (Scale 1:2,500) and Warwickshire Map Published 1921-1926 (Scale 1:10,560)

No development has occurred on or in the vicinity of the site.

3.1.4 Ordnance Survey Plan Published 1955 (Scale 1:10,560)

The map shows the site to be part of an airfield. There are no details within the area as themaps of this era had all military and strategic sites removed.

3.1.5 Ordnance Survey Plan Published 1959-1963 (Scale 1:2,500)

The map shows the site to be covered by two large hangar type buildings. Between theseare two smaller buildings. All the buildings are accessed by a perimeter road with variousaccess points to the buildings. The main barracks to the north is covered by hangars, officeand accommodation blocks. The area to the south of the site remains an open field.

3.1.6 Ordnance Survey Plan Published 1968 (Scale 1:10,560)

No further development has occurred on or in the vicinity of the site.

3.1.7 Supply of Unpublished Survey Information Published 1973 (Scale 1:2,500)

The building that occupied the north west part of the site has been removed and an H-shaped building is located in the across the north east part of this area. The main hangarbuilding on the east part of the site remains. No further development has occurred on thebarracks to the north.

3.1.8 Ordnance Survey Plan Published 1972 - 1982 (Scale 1:2,500)


3.1.9 Ordnance Survey Plan Published 1983 - 1995 (Scale 1:10,000)


3.1.10 Additional SIM Published 1977-1992 (Scale 1:2,500)


3.1.11 Large Scale National Grid Data Published 1993 (Scale 1:2,500)


3.1.12 Large Scale National Grid Data Published 1994-1996 (Scale 1:2,500)

The H-shaped building on the western part of the site has been removed. No furtherdevelopment has occurred on or in the vicinity of the site.

3.1.13 Large Scale National Grid Data Published 1996 (Scale 1:2,500)


3.1.14 10K Raster Mapping Published 1999 (Scale 1:10,000)



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3.1.15 10K Raster Mapping Published 2008 (Scale 1:10,000)


3.2 REVIEWThe site was part of an open field system between 1888 and 1925. Between 1925 and 1955Gamecock Barracks was developed, including the proposed site. The 1959-1963 map showedthe site to be covered by two large hangar buildings. The western building was removed andreplaced with a H-shaped building over the north east quarter of the building area by 1973.Thisbuilding was removed by 1994. The eastern hangar is shown on all of the maps from 1959-1963to 2008.

4 GeologyThe BGS Geological Survey Sheet 169 (Solid & Drift Edition), Scale 1:50,000, reveals that thesite is underlain by Dunsmore Gravel overlying Oadby Till. The drift deposits overlie the MerciaMudstone Group of Triassic age.

5 HydrologyThe nearest surface water feature is a drainage channel that enters the River Anker located257m north west of the site. The Envirocheck Report (Appendix A) indicates the site does not liein an area susceptible to flooding.

The Envirocheck Report indicates that there are two discharge consents within 500m radius ofthe site. The nearest is 383m north east of the site to Mrs M. C. Male for sewage effluent from acaravan. The second is held by Mr A. Grimmett for a soakaway at a domestic property.

A further eight discharge consents are located between 850m and 1km from the site.

6 HydrogeologyThe Groundwater Vulnerability Map, Sheet 23, Leicestershire (Scale 1:100,000) reveals that thestrata underlying the site forms a minor aquifer of variable permeability.

The Envirocheck Report (Appendix A) indicates that the site does not lie within a groundwatersource protection zone.

The Envirocheck Report indicates that there are three water abstraction licences between 700mand 850m of the site. The nearest is located 702m to the south west to R. M. Eglin and SonsLimited for general farming and domestic use.


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7 Environmental Information7.1 GENERAL

The Envirocheck Reports presented in Appendix A contains all registered environmentalinformation up to 1km from the centre of the sites. This information is summarised below andincludes details relating to the following site aspects:

hydrological data; Environment Agency records; waste records; hazardous substances; geological records and hazards; industrial land uses and; sensitive land uses.

7.2 LOCAL AUTHORITY AND INTEGRATED POLLUTION PREVENTION ANDCONTROLSThere are no local authority pollution prevention and controls records within 1km of the site.

7.3 INCIDENTS TO CONTROLLED WATERSA total of 3 No. pollution incidents to controlled waters have been reported between 500m and1km from the site. The nearest was a category 3 – minor incident, located 650m north west ofthe site by unknown oils. The remaining two incidents were also classed as Category 3 – minorincident.

7.4 LANDFILL / WASTE TRANSFER / WASTE TREATMENT / DISPOSAL SITESThere is one recorded historic landfill located 795m north east of the site at Bramcote Road.The landfill site is recorded as closed.

There are no licensed waste management facilities, waste treatment, disposal sites or wastetransfer sites within 1km of the site.

7.5 HAZARDOUS SUBSTANCESThere are no Control of Major Accident Hazard sites (COMAH) within 1km of the site.

There are no explosive sites registered within 1km of the site.

There is no listed Notification if Installations Handling Hazardous Substances (NIHHS) heldwithin 1km of the site.

There are no planning hazardous substance consents or enforcements within 1km of the site.

7.6 TRADE DIRECTORY ENTRIESThere are no trade directory entries within 1km of the site.

There is no fuel station listed within 1km of the site.


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7.7 SENSITIVE LAND USESThe site lies within an area of adoptive green belt and nitrate vulnerability zone.

7.8 RADONThe site is not in a radon affected area. Less than 1% of properties in the area are above theaction level. No radon protection measures are necessary in the construction of new dwellings.


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8 Initial Qualitative Risk Assessment8.1 METHODOLOGY

The risk assessment considers the current site land use and the proposed new developmentland use. It is based on the findings of the walkover and Landmark Information GroupEnvirocheck Report.

Health, safety and environmental issues on the site have been considered by assessing thepotential risks posed by the proposed new development. A site-specific qualitative approachhas been adopted, which establishes links between a hazardous SOURCE, an exposurePATHWAY and a potential RECEPTOR. A risk can only be present if these three componentsare realised. This source-pathway-receptor relationship is described as a pollution linkage.

The British Standard guidance for the “Investigation of Potentially Contaminated Sites” (BS10175:2001) defines a hazard as “the inherently dangerous quality of a substance, procedure orevent.” A risk is defined as “the probability of the occurrence of, and magnitude of theconsequences of, an unwanted adverse effect on a receptor.” A receptor is “persons, livingorganisms, ecological systems, controlled waters, atmosphere, structures and utilities that couldbe adversely affected by the contaminants.”

The potential contaminant-pathway-receptor scenarios given below have been characterised aspart of the risk assessment process and are summarised in the conceptual ground model for thesite (Figure 2). An assessment of the likely pollutant linkages and the degree of risk are givenand an evaluation on the need for controlling the estimated risk is made.


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8.2 RISK ASSESSMENT CATEGORISATIONSThe risk to a potential receptor from a contaminant source is only possible through the link of acomplete exposure pathway. This assessment identifies where these pollutant linkages mayexist. Risk is based on consideration of the likelihood of an event and the severity of thepotential consequence. The following categorisation of risk has been used:

Table 8.1 Categorisation of Risk

Term Description

High riskThe effects on a receptor from an identified source are likely to be significant.Harm is likely without appropriate remedial action. Source-pathway-receptorlinkage proven complete

Medium risk The effects on a receptor from an identified source are likely to be moderate.Harm is possible without appropriate remedial action.

Low risk The effects on a receptor from an identified source are likely to be mild. Harmmay be possible if appropriate action is not taken.

Negligible risk An identified hazard does not give rise to the potential to cause harm to areceptor.

The potential severity of a hazard on the identified receptor is estimated based on the followingcategorisation shown in the table below:

Table 8.2 Categorisation of Severity of a Hazard

Term Description

SignificantDeath, permanent ill health or damage will occur to humans. Structural failureor substantial damage to buildings. Contamination of groundwater such thatappropriate guideline action levels are exceeded.

ModerateChronic non-fatal harm (recoverable), minor harm, ill health or impairment ofhumans. Minor damage to property or buildings. Contamination of groundwatersuch that appropriate guideline action levels are not exceeded.

Negligible No appreciable harmful effects to humans. No damage to property or buildings.Groundwater not contaminated above background (baseline) levels.

The assessment takes into account the risks considered to have a pollutant linkage during thesite construction works and the risks associated with the end use of the site as commercial/industrial. The potential contaminant-pathway-receptor scenarios are given in Table 8.3: RiskAssessment Summary.


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Table 8.3: Gamecock Barracks, Cormorant Vehicle GarageRisk Assessment Summary

Source Receptor Pathways toReceptor

Associated Hazard(Potential Severity)

Likelihood RiskCategory

Action/Notes

Possiblecontaminantsin MadeGround

Constructionworkers

Direct contact,ingestion, and

inhalation.

Human Health(Moderate)

Low Low Contaminants may be present in Made Ground beneath the concrete slab construction, and from vehicle oil andfuel leaks from parking and access onto and off the slab areas may also be present.

A phase 2 ground investigation will test made ground for potential contaminates on the site.

End users ofsite


inhalation.


Negligible Negligible A/A with regard to sources.There is no significant pathway for end users, as buildings with new floors placed over the existing concrete slabswill cover the site.

Constructionworkers &end users

Vapours /Explosions


Low Low A/A with regard to sources.

Gas monitoring will be carried out during a phase 2 ground investigation.

Groundwater Seepage throughsoil

Contamination ofGroundwater(Significant)

Negligible Negligible A/A with regard to sources.There is unlikely to be significant contamination at the site. The site is also underlain by Dunmore Gravelsoverlying Oadby Till which will inhibit movement of water to the underlying Mercia Mudstone Group.

SurfaceWater

Direct seepagethrough soil (nodirect groundwaterpathway)

Contamination ofControlled Waters

(Significant)

Negligible Negligible No significant pathway.The distance to surface water and the relatively flat topography will limit any runoff and infiltration through soils toany nearby surface water.

Possiblecontaminantsingroundwater

Constructionworkers


inhalation.


Negligible Negligible The development is not expected to encounter groundwater. Perched water maybe encountered in the DunsmoreGravel, however, this is not anticipated to be contaminated.

Any exposure to potentially contaminated groundwater is likely to be limited and any risk will be reduced if normalstandards of site housekeeping are adopted.

End users ofsite


inhalation.


Negligible Negligible A/A with regard to sources.There is no significant pathway for end users, as buildings and hardstanding areas will cover the site.

Constructionworkers &end users

Vapours /Explosions


Negligible Negligible A/A with regard to sources.The depth to groundwater is likely to reduce the potential for exposure.

Spillage ofconstructionfuel duringconstruction

Constructionworkers


inhalation.


Low Negligible Employment of normal standards of site housekeeping (no eating, drinking & smoking on site, use of gloves etc),and accounting for the very short exposure times the risk posed to construction workers is considered to benegligible.

Groundwater& surface

water

Seepage throughsoil.

Contamination ofControlled Waters

(Significant)

Low Negligible Normal storage and handling practices and the relatively small volumes of fuel handled/stored at any given timeshould limit exposure to this risk.


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9 ConclusionThe walkover, historical and environmental information obtained has not revealed any particularcontaminative activity or incident to have taken place on or near the site.

The walkover and review of the available desk study information has not revealed any historicalland use or incident which may pose a risk to the site by contamination of underlying soils orgroundwater.

The qualitative risk assessment (see Table 8.3) based on the desk study and walkover hasrevealed a negligible risk via source-pathway-receptor at the site.


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Figures


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Figure 1 Site Location Plan

Site Location

Project: Gamecock Barracks, CormorantVehicle Garage Drawn Checked Revision

Job No: 109597 RY HW

Site: Gamecock Barracks, Date Date Date

OSlicence no 40041819 December

2008December

2008


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Figure 2 Conceptual Ground ModelNorth-West South-East

Oadby Till

?

Existing concrete slabs

Dunsmore Gravel

Groundwater?

Fuelsand oils

GasGas

Made Ground

AccessRoad

AccessRoad

AccessRoad

Fuelsand oils

Existing concrete slabs

Mercia Mudstone Group


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Appendices


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Appendix A - Landmark Envirocheck Report

Order Details

Site Details30th Signal Regiment, Gamecock Barracks, Bazzard Road,Bramcote, NUNEATON, Warwickshire, CV11 6QN

Order Number:Customer Ref:National Grid Reference:Slice:Site Area (Ha):Search Buffer (m):

26778476_1_1109597440720, 288110A4.141000

Tel:Fax:Web:

0844 844 99520844 844 9951www.envirocheck.co.uk

Page 1 of 14A Landmark Information Group Service v33.1 17-Nov-2008

Historical Map - Slice A

Ordnance Survey County Series andOrdnance Survey Plan 1:10,560

Ordnance Survey Plan 1:10,000 1:10,000 Raster Mapping

Historical Mapping Legends

Historical Mapping & Photography included:

WarwickshireWarwickshireWarwickshireWarwickshireHistorical Aerial PhotographyHistorical Aerial PhotographyOrdnance Survey PlanOrdnance Survey PlanOrdnance Survey PlanOrdnance Survey PlanOrdnance Survey Plan10K Raster Mapping10K Raster Mapping

1:10,5601:10,5601:10,5601:10,5601:10,5601:10,5601:10,5601:10,5601:10,0001:10,0001:10,0001:10,0001:10,000

1888 - 18901904 - 19051921 - 192619381947 - 195019471955196819751983 - 1995198419992008

23456789

1011121314

Mapping Type Scale Date Pg

Order Details



26778476_1_1109597440720, 288110A4.141000

Tel:Fax:Web:



WarwickshirePublished 1888 - 1890Source map scale - 1:10,560The historical maps shown were reproduced from maps predominantly held atthe scale adopted for England, Wales and Scotland in the 1840`s. In 1854 the1:2,500 scale was adopted for mapping urban areas; these maps were used toupdate the 1:10,560 maps. The published date given therefore is often someyears later than the surveyed date. Before 1938, all OS maps were based onthe Cassini Projection, with independent surveys of a single county or group ofcounties, giving rise to significant inaccuracies in outlying areas. In the late1940`s, a Provisional Edition was produced, which updated the 1:10,560mapping from a number of sources. The maps appear unfinished - with allmilitary camps and other strategic sites removed. These maps were initiallyoverprinted with the National Grid. In 1970, the first 1:10,000 maps wereproduced using the Transverse Mercator Projection. The revision processcontinued until recently, with new editions appearing every 10 years or so forurban areas.


Map Name(s) and Date(s)

Order Details



26778476_1_1109597440720, 288110A4.141000

Tel:Fax:Web:






Order Details



26778476_1_1109597440720, 288110A4.141000

Tel:Fax:Web:



WarwickshirePublished 1938Source map scale - 1:10,560The historical maps shown were reproduced from maps predominantly held atthe scale adopted for England, Wales and Scotland in the 1840`s. In 1854 the1:2,500 scale was adopted for mapping urban areas; these maps were used toupdate the 1:10,560 maps. The published date given therefore is often someyears later than the surveyed date. Before 1938, all OS maps were based onthe Cassini Projection, with independent surveys of a single county or group ofcounties, giving rise to significant inaccuracies in outlying areas. In the late1940`s, a Provisional Edition was produced, which updated the 1:10,560mapping from a number of sources. The maps appear unfinished - with allmilitary camps and other strategic sites removed. These maps were initiallyoverprinted with the National Grid. In 1970, the first 1:10,000 maps wereproduced using the Transverse Mercator Projection. The revision processcontinued until recently, with new editions appearing every 10 years or so forurban areas.



Order Details



26778476_1_1109597440720, 288110A4.141000

Tel:Fax:Web:



Historical Aerial PhotographyPublished 1947 - 1950Source map scale - 1:10,560The Historical Aerial Photos were produced by the Ordnance Survey at a scaleof 1:1,250 and 1:10,560 from Air Force photography. They were producedbetween 1944 and 1951 as an interim measure, pending preparation ofconventional mapping, due to post war resource shortages. New securitymeasures in the 1950's meant that every photograph was re-checked forpotentially unsafe information with security sites replaced by fake fields orclouds. The original editions were withdrawn and only later made availableafter a period of fifty years although due to the accuracy of the editing, withoutviewing both revisions it is not easy to spot the edits. Where availableLandmark have included both revisions. © Landmark Information Group and/or Data Suppliers 2008.

Historical Aerial Photography - Slice A


Order Details



26778476_1_1109597440720, 288110A4.141000

Tel:Fax:Web:



Historical Aerial PhotographyPublished 1947Source map scale - 1:10,560The Historical Aerial Photos were produced by the Ordnance Survey at a scaleof 1:1,250 and 1:10,560 from Air Force photography. They were producedbetween 1944 and 1951 as an interim measure, pending preparation ofconventional mapping, due to post war resource shortages. New securitymeasures in the 1950's meant that every photograph was re-checked forpotentially unsafe information with security sites replaced by fake fields orclouds. The original editions were withdrawn and only later made availableafter a period of fifty years although due to the accuracy of the editing, withoutviewing both revisions it is not easy to spot the edits. Where availableLandmark have included both revisions. © Landmark Information Group and/or Data Suppliers 2008.

Historical Aerial Photography - Slice A


Order Details



26778476_1_1109597440720, 288110A4.141000

Tel:Fax:Web:



Ordnance Survey PlanPublished 1955Source map scale - 1:10,560The historical maps shown were reproduced from maps predominantly held atthe scale adopted for England, Wales and Scotland in the 1840`s. In 1854 the1:2,500 scale was adopted for mapping urban areas; these maps were used toupdate the 1:10,560 maps. The published date given therefore is often someyears later than the surveyed date. Before 1938, all OS maps were based onthe Cassini Projection, with independent surveys of a single county or group ofcounties, giving rise to significant inaccuracies in outlying areas. In the late1940`s, a Provisional Edition was produced, which updated the 1:10,560mapping from a number of sources. The maps appear unfinished - with allmilitary camps and other strategic sites removed. These maps were initiallyoverprinted with the National Grid. In 1970, the first 1:10,000 maps wereproduced using the Transverse Mercator Projection. The revision processcontinued until recently, with new editions appearing every 10 years or so forurban areas.



Order Details



26778476_1_1109597440720, 288110A4.141000

Tel:Fax:Web:






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