Supporting documents - Renfrewshire Council

Proposed New Tesco Store 

Wallneuk Road 

Paisley, Renfrewshire 

Revised Contaminated Land Generic 

Quantitative Risk Assessment

Goodson Associates 

53 Melville Street 

Edinburgh 

EH3 7HL 

Email: admin@goodsons.com 

Web: www.goodsons.com 

Tel: 0131 226 2044 

Fax: 0131 226 3107 

Proposed New Tesco Store 

Wallneuk Road 

Paisley, Renfrewshire 

Revised Contaminated Land Generic 

Quantitative Risk Assessment 

Client: Tesco Stores Limited 

Date: June 2011 

Ref: 9692

Report 

Table of Contents 

1 Objective 1 

2 Preliminary Conceptual Site Model 1 

3 Generic Risk Assessment 3 

4 Final Risk Assessment/ Revised CSM 10 

5 Conclusions 15 

List of Tables 

Table 1 Preliminary Conceptual Site Model Summary 

Table 2 Total Soil Concentrations Human Health 

Table 3 Leachable Soil Concentrations 

Table 4 Total Soil Concentrations Phytotoxic Risk 

Table 5 Revised Conceptual Site Model Summary 

Appendices 

Appendix A CLEA v1.06 SGV/GAC Settings & Results 

Appendix B Laboratory Results Statistical Analysis 

Appendix C UKWIR 10/WM/03/21

Risk Assessment 

1.0 Objective 

Proposed New Tesco Store, Wallneuk Road, Paisley, Renfrewshire: 9692 

The objective of this report is to present the results of a revised updated generic 

(commercial/industrial) risk assessment undertaken on thirty four soil and leachate samples 

and: five groundwater samples obtained from a proposed new Tesco store at Wallneuk 

Road, Paisley Renfrewshire. This report provides an update to the previously compiled 

generic risk assessment report 1 in light of changes made to the CLEA modelling software 

and assessment of risk to water supply pipe placement since May 2009. The extent and 

nature of potential on site contamination and an evaluation of the potential risk(s) to 

development within the context of “suitability of use” is provided in this report. 

The history, current site setting, recent site investigation and development proposal details 

are contained within the Goodson Associates (Geotechnical and Environmental Assessment 

Report) of which this report is presented as (Appendix 8). 

2.0 Preliminary Conceptual Site Model 

The rationale, context and regulatory requirements for contamination assessment and 

methodology are provided in sections 2.0 and 8.0 of the geotechnical and environmental 

assessment report in conjunction with section 3.0 of this report. Summarised in Table 1 

below are the key components of the derived preliminary conceptual site model. 

2.1 Pollutant Linkage Assessment 

The key preliminary potential complete SPR linkages have been identified and rationalised in 

the context of the plausible risks upon redevelopment of the site. The full relationships 

between the identified plausible linkages and an assignment of categorised risk are provided 

in section 8.0 of the May 2009 geotechnical and environmental assessment report and 

graphically as (Appendix 9) of the September 2008 preliminary environmental assessment 

report. 

1 Proposed New Tesco Store at Wallneuk Road Paisley- Goodson Associates Contaminated Land Generic Quantitative Risk Assessment 

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Proposed New Tesco Store, Wallneuk Road, Paisley Renfrewshire: 9692 

Table 1: Conceptual Site Model Summary 

Potential Risk 

Low Medium High 

Proposed Commercial Retail Development, Wallneuk Road, Paisley, Renfrewshire 

Source(s) 

Pathways 

Receptors 

ON SITE: 

Historical Iron Foundry and 

engineering works, former 

industrial buildings and 

processes 

Made ground 

Generation and migration of 

ground gas- with made ground 

and potential underlying 

shallow coal workings 

Volatilisation and migration of 

organic compounds 

OFF SITE: 

Former Engineering works and 

mineral extraction activities 

Dermal contact/Dust Inhalation 

of exposed soils 

Dust dispersion during 

construction 

premises 

to adjacent 

Leaching of mobile phase 

aqueous phase contaminants 

to underlying perched 

groundwater and Surface run 

off to adjacent watercourse(s) 

Migration of gases and vapours 

into sub floor voids 

Surface run-off of impacted 

groundwater 

receptors 

to off site 

Construction workers 

End users 

Off site workers 

Buildings and services 

Water Environment 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Comments 

The area within the site boundary has been 

utilised for numerous industrial processes, most 

prominent being Iron Foundry and steel works. 

Other processes warehousing and engineering 

works may also have impacted the site. There is 

the potential for viable pollutant linkages to exist 

at the site the current extent and nature of which 

are unknown, but may, if disturbed through 

construction work have a deleterious impact on 

(humans) the water environment and 

Buildings/structures . 

Potential for construction workers and end users 

to come in contact with exposed/disturbed soils 

during development. 

Good working practises should minimise dust 

generation and dispersion 

Potential of leaching of mobile phase 

contaminants into under lying groundwater 

resources or surface run-off. Surface tarmac and 

glacial soils reduce this risk. 

Potential of ground gas generation within made 

ground deposits and from underlying shallow 

mineral workings. Potential for vapour generation 

from potential hydrocarbon concentration within 

sub surface soils 

The existing drainage system mitigates to some 

extent uncontrolled surface run-off 

There is the potential for complete pollutant 

linkages to exist at this site, which could 

potentially have adverse impacts on sensitive 

receptors. 

Construction workers and buildings and services 

may be impacted by potentially contaminated 

soils. 

An evaluation is necessary to quantify and assign 

any risk(s) posed to the development considering 

the current site land use 

RISK CATEGORY RATING (CLR6) 

A MEDIUM Risk rating (Category 3) has been assigned to the site given the previous site land uses and the likely potential for 

contaminants to exist within the sub surface soils. There is likelihood for complete plausible pollutant linkages to exist at the 

site. These are likely to be prevalent during construction. 

The site is considered “suitable for use” in its current setting and context. However, during site preparation and construction 

works, there is a pathway to exposure to potentially deleterious levels of contaminants. Sensitive receptors may be impacted 

by movement (and/or) disturbance of contaminated soils. It is in this context that the site has been assigned a Medium risk 

rating. Due to the nature of the underlying soils and potential for contamination to exist, and the nature of the proposed 

development, the site requires further investigation to be deemed “Suitable for Use”. 

Upon completion of the development and the likely removal of exposure pathways and therefore incomplete pollutant 

linkage, the risks to the development and wider environment are likely to be Low.

3.0 Generic Risk Assessment 


Following completion of the preliminary risk assessment (Tier 1 identification of pollutant 

linkages, summarised in (Section 8.0 of the May 2009 Geotechnical and Environmental 

Assessment Report), in order to assess the significance of the limited identified pollutant 

linkages, samples were obtained from the (November 2008) site investigation and a revised 

generic quantitative risk assessment conducted on data obtained from laboratory and field 

results (Tier II). 

This involves the screening of the reported concentrations of chemical contaminants in soil, 

groundwater and surface water (where applicable) against Generic Assessment Criteria 

(GAC). Separate GACs are available for assessing risks to human health, buildings and 

services, the water environment and gas generation risks. If any contaminants “fail” the 

assessment criteria then they are considered to potentially pose a risk to either (The Water 

Environment) or human health, or buildings and services via the relevant pollutant linkages 

identified and therefore either mitigation measures are required or more detailed risk 

assessment should be carried out. 

The GACs/SGV’s adopted for this Tier 2 assessment and the rationale behind their selection 

are detailed below. 

3.1 Soil- Human Health 

In the first instance, published (GACs) or published Soil Guideline Values (SGVs) which are 

currently under development in line with the release of the new CLEA v1.062’3 assessment 

model (which was released in December 2009) are adopted as the screening criteria. The 

new changes to the model (revisions made over CLEA v1.04 are presented on the EA 

website4 and the CLEA Model handbook (pp2-3). At the time of writing, new SGVs have 

been published (available to download as PDF from the EA website5) for arsenic, cadmium, 

mercury, nickel, selenium, phenols, dioxins, furans, dioxin like PCB’s and BTEX compounds 

in conjunction with updated Toxicological data. New values are due imminently for other 

key compounds during the coming months.6 SGVs/GACs are defined within documents 

SC0500021/SR27 and SC0500021/SR38 (which replace CLR9 and CLR10) as concentrations 

of contaminants in soil that, if exceeded, may be indicative of unacceptable risks to human 

health. In this case, since the proposed land use for this site is a commercial retail 

development an appropriate application of the “model” is required), the CSM developed for 

this site matches the CSM derived using CLEA v1.06 site assessment criteria (SGVs/GACs) 

with a reasonable degree of conservativeness. SGVs/GACs have been selected on the basis 

of the proposed end use (with conservatism built-in) and additional site specific derived 

values (within the CLEA Model). These are considered to be sufficiently conservative to 

protect other sensitive receptors within and beyond a typical commercial/industrial 

development. 

As not all chemicals reported at the site have a published SGV/GAC, alternative sources of 

health based criteria have been used as the GAC. 

2 CLEA Software (v1.05) Science Report-(SC050021/SR4) September 2009 

3 http://www.environment-agency.gov.uk/research/planning/40397.aspx 




7 Environment Agency-Human Health Toxicological Assessment of Contaminants in Soil (Science Report SC0500021/SR2) Final January 2009 

8 Environment Agency-Updated Technical Background to the CLEA Model (Science Report SC0500021/SR3) Final January 2009 

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3.1 Soil- Human Health (continued) 

Given the limited number of available published SGV/GAC’s available, where an appropriate 

value is unavailable “derived values” have been generated following the approaches 

recommended in SC0500021/SR2 SC0500021/SR3 and associated material (CLEA v1.05 

Handbook and software “the Model”) and are therefore based on health criteria values 

selected following the hierarchy of preferred sources described in SC0500021/SR2. 

Physio-chemical input parameters for the CLEA model were selected from Environment 

Agency/Defra publications, where available, and additional authoritative data 

sources9’10’11’12. 

The newly derived screening criteria have been modelled by DAM using the new CLEA 

v1.06 assessment model (in Basic Mode-Generic Assessment Criteria- 

Commercial/Industrial) and the outputs (the settings and results) provided as supporting 

material in (Appendix A). The proposed development is a commercial retail store. In respect 

of this, the derived GAC’s have been modelled on a conservative approach with a 

commercial/industrial land use scenario applied (Warehouse post 1970) and the soil medium 

selected as SAND. This was selected as an appropriate conservative soil medium considering 

the insitu heterogeneous surface fill deposits (Made Ground) tarmac, ash, slag, and fused iron 

slag. 

A recent document13 published by The Environment Agency (EA) and based on the Total 

Petroleum Hydrocarbon Criteria Working Group (TPHCWG) provides the framework for 

evaluation of health risks from petroleum hydrocarbons in soil. The approach in the UK has 

been developed as part of the Environment Agency’s Contaminated Land Exposure 

Assessment model (CLEA). This model assesses the fate and transport dynamics of key 

aromatic and aliphatic petroleum fractions and through toxicological review, provides an 

appropriate Soil Guideline Value (SGV) conservative of Human Health. This framework is 

provided on pp9 and Figure 4.1 of the document. Assessment criteria for the evaluation of 

potential risk from petroleum hydrocarbons are derived and calculated by DAM using CLEA 

v1.06 and SC0500021/SR714. 

Assessment of polycyclic aromatic hydrocarbon (PAH) fractions are based on physiochemical 

parameters for selected principal risk driver compounds: naphthalene, benzo-apyrene, 

1,2:5,6 dibenzanthracene and fluorene. These are considered in terms of the most 

prevalent human health risk factors and have authoritative published data15 on chronic and 

acute exposure and interactions in the environment. 

At this stage, with ongoing new SGV development, there is limited value to be gained in 

determining Health Criteria Values (HCV’s) given that new SGVs and toxicological data are 

due to be published throughout 2011. 

9 CRC Handbook of Chemistry and Physics, IUPAC-NIST Solubility Series and US Environmental Protection Agency. 

10 ATSDR (1985 onwards) Toxicity Profiles – Various. US Department of Health and Human Services, Public Health Service, Agency for Toxic Substances and Disease Registry. 

11 Environment Agency (2003) Review of Fate and Transport of Selected Contaminants in the Soil Environment. Draft Technical Report P5-079/TR1, September 2003. Environment 

Agency, Bristol. 

12 USEPA (1996) Soil Screening Guidance: Technical Background Document – 2nd Edition. United States Environment Protection Agency – Office of Solid Waste and Emergency 

Response EPA/540/R95/128. 

13 The UK Approach for Evaluating Human Health Risks from Petroleum Hydrocarbons in Soils (Report P5-080/TR3) Environment Agency February 2005 

14 Compilation of Data for Priority Organic Pollutants for Derivation of Soil Guidelines Values 

15 Total Petroleum Hydrocarbons Working Group (TPHCWG) Vol 1-5 1997 

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3.1 Soil- Human Health (continued) 

Following the withdrawal of CLR7 and adopting the accepted best authoritative guidance 

published by CL:AIRE16, a statistical representation of the likely contamination value of an 

individual contaminant can be calculated using the Mean Value Test. In assessing the 

significance of soil contamination a key assumption is that the receptor will tend towards an 

average exposure, which is related to both the contaminant profile at the site and receptor 

habits. 

In other words, at a typical site that has a spread of contaminant concentrations, over the 

lifetime of exposure, a receptor is expected to wander randomly over the site, thus being 

exposed at one moment to a higher concentration and the next moment to a lower 

concentration. 

Thus, the most appropriate Representative Contaminant Concentration (RCC) is the 

average. However, to account for uncertainties, CL:AIRE with caveats17recommends the 

use of the 95% upper confidence limit of the arithmetic mean (UCL) as the RCC. 

The RCC is then compared to the published or derived SGV/GAC and a pass or fail assigned 

to the particular contaminant. Should a small sample set be obtained from a site (normally 

Contaminant 


Table 2: Total Soil Concentrations-Human Health-Commercial/Industrial 

Assessment 

Criteria mg/Kg 

pH 5-9 

Source 

BRE 

SD1(2005) 

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Max 

Conc 

mg/Kg 

Min 

Conc 

mg/Kg 

Location of 

Max Value 

UCL/RCC or 

MAX Value 

PASS/FAIL 

7.97 6.18 BH9 (1.0m) 6.16 LCL PASS 

Arsenic 640 SGV 2009 103.6


3.2 Leachable Soil Concentrations 

Fourteen samples from the November 2008 site investigation were scheduled for NRA 

(10:1) leachate analysis to determine the potential of total soil contaminants to enter the 

liquid phase, thus providing a pathway to contaminate ground water resources. Summarised 

in Table 3, are the leachable soil concentrations compared to applicable screening criteria19. 

Contaminant 

Assessment 

Criteria µg/l 

Table 3: Leachable Soil Concentrations 

Source 

19 A hierarchal approach is used to assess the significance of contamination and published UK Drinking Water standards and Environmental Quality Standards (EQS) are referenced. 

The more stringent of either the EQS or UK DWS is applied with consideration of the most sensitive receptor. In Scotland the Water Supply (Water Quality Scotland Regulations 

2001) has been used as the UK DWS for comparison. Other criteria including EQS, EU DWS and World Health were obtained from Appendix 8 of Hydrogeological Risk Assessment 

for Landfills (Environment Agency 2004) 

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Detected 

Above MDL Max 

Concentra 

tion µg/l 

Location of 

Max Value 

No Over 

Assessment 

Criteria 

Arsenic 10 UK DWS (Scotland) x N/A N/A 0 

Cadmium 5 UK DWS (Scotland) x N/A N/A 0 

Chromium 5-250 EQS Freshwater x N/A N/A 0 

Lead 25 UK DWS (Scotland) X N/A N/A 0 

Mercury 1 UK DWS (Scotland) X N/A N/A 0 

Selenium 10 UK DWS (Scotland) X N/A N/A 0 

Copper 1-28 EQS Freshwater X N/A N/A 0 

Nickel 20 UK DWS (Scotland) (1) 19 BH13 (1.0m) 0 

Zinc 8-500 EQS Freshwater (14) 91 BH6 (1.0m) 0 

Phenol 0.5 UK DWS (Scotland) X N/A N/A 0 

Free Cyanide 50 UK DWS (Scotland) N/S N/A N/A 0 

Sulphate 250 UK DWS (Scotland) (14) 64 BH9 (1.0m) 0 

Nitrate (NO3) 50 UK DWS (Scotland) (14) 19 BH8 (1.0m) 0 

Total TPH 10 UK DWS (Scotland) X N/A N/A 0 

Total PAH 0.1 (Total) UK DWS (Scotland) N/S N/S N/S N/S 

Pesticide Suite 

(OP-SP) 

Compounds 

0.5 (Total) 

0.1 individual 

species 

UK DWS (Scotland) N/S N/S N/S N/S


3.3 Total Soil Concentrations Phytotoxic Risk 

No specific guidelines values have been published when assessing the risks to plants, 

property or crops from contaminants in soils. A Soils Code 20 has been published in 

accordance with current legislation21on maximum permissible concentrations of potentially 

phytotoxic elements in sewage sludge applied to land for crop cultivation, which can be used 

in the context of assessing risk to plants from contaminants in soils. 

Presented in Table 4, are the maximum contaminant soil concentrations compared to the 

DEFRA guidelines. 

Contaminant 

Table 4: Total Soil Concentrations Phytotoxic Risk 

Assessment 

Criteria 

mg/Kg 

Arsenic 50 

Cadmium 3 

Chromium 400 

Lead 300 

Mercury 1 

Selenium 3 

Copper 135 

Nickel 75 

Zinc 200 

Source 

DEFRA 

Guidance 

DEFRA 

Guidance 

DEFRA 

Guidance 

DEFRA 

Guidance 

DEFRA 

Guidance 

DEFRA 

Guidance 

DEFRA 

Guidance 

DEFRA 

Guidance 

DEFRA 

Guidance 

Observing the data from Table 4, it is noted that there are exceedances recorded for 

arsenic, mercury and nickel at locations distributed across the site. The values obtained are 

likely to be reflective of the typical heterogeneous nature of made ground deposits and the 

spatial variance often encountered at such sites. It should be noted that values for chromium, 

lead and copper include BH12 (an identified potential “hotspot”) given the elevated values 

significantly above the mean. 

In relation to the development proposal, (retail store with car parking, PFS and access 

roadways) which effectively creates a barrier to potential underlying contaminants and that 

soft landscaping is likely on (boundaries only) there are no further considerations deemed 

necessary with respect to phytotoxic risk(s). 

20 Ministry of Agriculture Fisheries (1998) Now DEFRA 

21 Sludge (Use in Agriculture) Regulations 1999 (as amended) which implement EC Council Directive 86/278 

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Maximum 

Concentration 

(UCL/RCC) 

mg/Kg 

Location of Max Value 

No Over 

Assessment 

Criteria 

103.6 MAX BH12 (1.0m) 1 

3.0 (RCC) Site Wide 0 

351.3 (RCC) 

Including BH12 

93.7 (RCC) 

Including BH12 

Site Wide 

Site Wide 

27.3 MAX BH11 (1.0m) 7 


3.4 Risks to Buildings/Services (Water Supply Pipes) 

When considering the specification/provision of construction materials relating to concrete 

and water supply pipes to be used in areas of contaminated land the following parameters 

should be considered: 

The pH/acidity of the soil and its potential aggressive behaviour. 

The concentration of toxic metals. 

Levels of sulphates and sulphides. 

Concentrations of organic compounds including hydrocarbons 

At the time of writing it is understood that the WRAS guidelines have been withdrawn 22 and 

are intended to be superseded by UKWIR document (Guidance for the selection of water 

pipes to be used in brownfield sites 23). This document provides a risk assessment based 

approach for the derivation of guideline parameters and applies updated procedures and 

technical background information which parallels CLEA v 1.06. As far as it is known, this 

document is currently under consultation and review by industry professionals with 

responses/comments due by mid end of May. We understand that Anglian Water have 

produced a document 24 that provides a review of the current UKWIR document and a 

discussion with regard to the implementation of the document recommendations. 

Correspondence with Scottish Water confirms that at the moment, all risk assessments for 

potentially contaminated sites are using the UKWIR published guidelines. In addition, WRAS 

may produce a new document later this year. 

Laboratory results indicate that site wide soil contaminant concentrations are generally well 

below the UKWIR guidelines for the provision of standard P.E supply pipe material. It is 

noted that whilst SVOC analysis has not been conducted on received soil samples, (the 

testing was conducted before the publication of the new document) total TPH and PAH soil 

concentrations are well below permissible guideline values. PAH soil concentrations are 

below the laboratory detection limit. Total phenol values are also below the 2.0 mg/kg 

detection limit for P.E water supply pipe specifications. 

Considering the historic land use, current site setting, recorded contaminant concentrations 

and the context of the development proposal, it is recommended that water supply pipes are 

upgraded to Aluminum wrapped polyethylene (A.I P.E) and laid in clean inert granular filled 

corridors and back filled with same. Alternatively, once the water supply pipe route has been 

finalised, additional samples could be obtained and analysed to determine whether the insitu 

soils present a risk to placement of standard PE water supply pipes. 

For clarity, the UKWIR document is included as (Appendix C). 

22 http://www.wras.co.uk/9-04-03_withdrawal.HTM 

23 Guidance for the Selection of Water Supply Pipes to be used in Brownfield Sites" (Ref 10/WM/03/21 January 2011 

24 http://www.anglianwater.co.uk/developers/installation/contaminated-land.aspx 

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4.0 Final Risk Assessment/Revised CSM 

4.1 Ground Gas 

The results of on site gas monitoring have been compared with relevant guidance25,26,27,28,29,30. 

The Building Regulations set action levels for both methane and carbon dioxide from which 

an initial assessment can be made. The action threshold for methane is 1%v/v while for 

carbon dioxide an initial consideration should be undertaken if the concentration exceeds 

1.5%v/v. Action might be required if carbon dioxide concentrations exceed 5%. If these 

thresholds are exceeded, reference should be made to specific documentation to determine 

the nature and extent of the gas control measures required. 

Guidance within CIRIA C665 and BS8485 identifies a number of gas regimes based on gas 

concentrations and borehole flow rates. The results obtained during monitoring is 

summarised in the Factual Report. The results indicate that a maximum (steady state) carbon 

dioxide (CO2) concentration of 1.0% v/v was recorded at BH5 during the mointoirng 

period. Values were observed to remian static at all locations over the gas measuring period. 

No carbon monoxide, methane or hydrogen sulphide was detected over 5 monitoring 

rounds at any installation. No depleted oxygen values (< 16% v/v O2) were detected. 

CIRIA 665 provides guidance on calculating the gas flow rates by derivation of the Gas 

Screening Value (GSV). This is obtained by multiplying the gas concentration (as a percentage 

volume) by the borehole flow rate in litres per hour. Measured flow rates were low with a 

maximum flux of (+0.9l/hr) recorded at BH9, the average being +0.6 l/hr over the 

monitoring period. The low flow values indicating that the insitu made ground deposits have 

low evolution rates and are not providing a significant gassing risk. 

Barometric pressures over the monitoring period have generally favoured gas emissions 

(measurements being targeted to events of generally less than 1000mB and or falling); we 

are of the considered opinion that the very low flow rates and gas concentrations measured 

accurately reflect the insitu conditions within the sub surface soils. 

In accordance with the CIRIA, BS8485 gas regimes described above the site falls into 

Characteristic Situation 1 (low risk). 

Applying the guidance and methodology from CIRIA, BS8485 and NHBC, and using the 

maximum (worst case scenario) carbon dioxide concentration at (BH5) and flow rate 

recorded (+0.9 l/hr at BH9) a GSV of 0.009 can be applied to the site. 

This is within the criteria of gassing Characteristic Situation 1 (GSV


4.1 Ground Gas (continued) 

In accordance with CIRIA C665 pp59/60 Tables 5.5A and 5.5B, a suitable monitoring 

duration and frequency of recordings is required to suitably assess the gassing 

characteristion at a site and in the context of the development proposal. Six monitoring 

rounds have been completed over a period of twenty weeks. 

4.2 Water Environment-Ground Water Quality 

Five, shallow groundwater samples obtained at depths from (0.20m-3.70m bgl) were 

scheduled for laboratory analysis which included: 

CLEA Metals suite 

pH, cyanide, phenol , ammoniacal nitrogen, mercury 

Speciated US EPA (PAH 16) 

Speciated TPH (aliphatic/aromatic split) 

In the first instance, the most conservative generic screening criteria the (Drinking Water 

Scotland Regulations 2001) have been applied to the results (included in the Factual Report 

as Appendix E) from sampled groundwater. The UKDWS screening criteria are included in 

the SEPA document (Assigning groundwater assessment criteria for pollutant inputs) May 

2011. 

It is acknowledged that the nearest surface water receptor is the White Cart Water located 

some 300m to the southwest of the site boundary, in order to provide a degree of 

conservatism, the selected drinking water standard for assessment are the UKDWS 

(Scotland regulations 2001). These have been selected before the relevant EQS standards 

(surface water receptor). The values are considered suitable Resource Protection Values 

(RPV’s) as it is not considered that the site presents a significant source of potentially 

hazardous substances or List1/11 groundwater directive substances. 

Review of the laboratory results indicate that metalloid and inorganic compounds (cyanide, 

ammonia phenol) are below the UKDWS guidelines. All total petroleum hydrocarbon 

compounds (C5-C35) were below the UKDWS values and the majority below the laboratory 

detection limit. 

With regard to speciated PAH compounds, exceedances were recorded at all sampled 

boreholes on the first sampling round. A maximum total PAH concentration of 0.34µg/l was 

recorded at BH3 0.62m bgl. Results from the second round of sampling (only BH5 had a 

permissible sampling volume) were below the laboratory detection limit. It is possible that 

potential oil/fuel leakage from parked vehicles (buses park towards the warehouse buildings) 

may have entered the borehole during significant rainfall events. Considering the 

development proposal and the location of BH3, which will be covered by the new Tesco 

store, thus reducing infiltration, the potential risks to the water environmental are low. 

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4.2 Water Environment-Ground Water Quality (continued) 

Overall risks to the water environment31’32 are low given consideration to the following: 

The development proposal (reducing infiltration) 

That sampled groundwater obtained was generally of good quality (no evidence of 

impaction by surface soil contaminants) 

The low propensity for contaminants to leach from the made ground and insitu 

natural deposits 

Provision of and integration with the existing storm and sewer drainage network 

should suitably mitigate any potential increased surface run-off. 

4.3 Buildings/Services 

Laboratory sulphate test results (Total Sulphate) indicate that the site conforms to BRE 

Special Digest (SD1) 33 ’ 34 Site Classification 1 criteria with regard to total sulphate 

concentrations. The measured soil pH values are generally slightly acidic (though not 

aggressive pH range 6.18-7.97) and, as a consequence, we would advise that foundation 

concrete of Aggressive Chemical Environment for Concrete (ACEC) AC-1 class is adopted. 

Water Supply pipes should be upgraded to Aluminum wrapped polyethylene (A.I.PE) and laid 

in clean granular corridors. Alternatively additional soil samples can be obtained and analysed 

once the water supply pipe route is finalised. 

No special gas protection measures are considered necessary on the basis of the recorded 

gas concentrations. 

4.4 Sensitive Receptors 

Having applied the procedures outlined in CLR1135, and developed a preliminary CSM the 

(first phase of a site risk assessment) a comparison of laboratory data against published and 

derived (GACs) indicate that the surface soils present a low risk to the identified receptors 

and the wider environmental setting. In the context of a commercial industrial end use, the 

site is suitable for use and no other considerations are deemed necessary in respect to the 

human identified receptors. The development proposal presents a barrier to underlying soils 

and thus effectively removes the source and subsequent pathway-receptor elements of the 

CSM. Laboratory soil contamination results and gas monitoring results indicate that the 

insitu soils present a low risk to the development in a commercial/industrial context. Overall 

metal and organic hydrocarbon (TPH and PAH) concentrations were below applicable 

criteria, and below laboratory detection limits (soil PAH). It is accepted that spatially isolated 

elevated metal concentrations (BH12) indicative of hotspot values were recorded. These are 

reflective of typical industrial soils which are often heterogeneous in nature. 

31 Water Framework Directive 2000/60 EC 

32 The Water Environment Water Services (WEWS) Scotland Act 2003 

33 BRE Special Digest 1, Concrete in Aggressive Ground (2005) 

34 Concrete Resistant to Chemical Attack (Specifying Concrete to BS EN 206-1/BS 8500) 

35 Model Procedures for the Management of Land Contamination, DEFRA September 2004 

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4.4 Sensitive Receptors (continued) 

An important consideration is the nature and context of the development proposal. At this 

site, a new retail store and car parking will occupy the west and central portions of the site, 

with a PFS to the southwest. It is noted that the latest development boundary (included as 

Appendix 4), does not include the area around the indoor bowling club. BH12 and BH13 

were advanced in this area and at BH12, elevated metals were recorded. These results are 

no longer required or included in the risk assessment, as there are no risks to identified 

receptors during development. 

Analysis of the site soil concentrations with respect to organic hydrocarbons (TPH and 

PAH) indicate a low risk to the development and surroundings. 

Leachate results indicate a low propensity for contaminants to enter the liquid phase, thus 

limiting potential impacts on underlying groundwater resources. 

The risks to ecosystems, (plants and fauna) are low given the nature of the development 

proposal, the removal of pollutant linkages and the positioning of vegetated screening on the 

site boundaries. 

Shallow perched groundwater is unlikely to experience deleterious concentrations of 

contaminants given the underlying hydrogeology, distance of nearest surface water feature, 

low leaching potential of the overlying soils and the provision of suitable drainage network 

to minimise surface run-off and infiltration. The results from the first groundwater 

monitoring round indicate PAH concentrations above the applicable UKDWS criteria. 

However, given the previous historic land use it is possible that the standing water table may 

be marginally impacted. There were no PAH compounds detected in the retrieved sample 

from BH5 (second round). 

Considering that the new retail store will cover this portion of the site, and thus minimising 

infiltration it is not considered that groundwater resources are likely to be deleteriously 

impacted. 

Should any unusual odours or seepages be encountered on site during the construction 

stage, then these should immediately be brought to the attention of the Engineer who 

should then arrange for the relevant sampling and testing to be carried out. 

Overall, it is considered that in the context of the development proposal, effectively 

removing exposure the exposure pathway (removing a key link of the SPR model) the site is 

“suitable for use” for the development. 

Should any unusual odours or seepages be encountered on site during the construction 

stage, then these should immediately be brought to the attention of the Engineer who 

should then arrange for the relevant sampling and testing to be carried out. 

A revised conceptual site model is provided as Table 5. 

-13-


Table 5: Revised Conceptual Site Model (Redevelopment) 

Potential Risk 

Low Medium High 

Proposed Commercial Retail Development, Wallneuk Road, Paisley, Renfrewshire 

Source(s) 

Pathways 

Receptors 

ON SITE: 

Historical Iron Foundry and 

engineering works, former 

industrial buildings and 

processes 

Made ground 

Generation and migration of 

ground gas- with made ground 

and potential underlying 

shallow coal workings 

Volatilisation and migration of 

organic compounds 

OFF SITE: 

Former Engineering works and 

mineral extraction activities 

Dermal contact/Dust Inhalation 

of exposed soils 

Dust dispersion during 

construction 

premises 

to adjacent 

Leaching of mobile phase 

aqueous phase contaminants 

to underlying perched 

groundwater and Surface run 

off to adjacent watercourse(s) 

Migration of gases and vapours 

into sub floor voids 

Surface run-off of impacted 

groundwater 

receptors 

to off site 

Construction workers 

End users 

Off site workers 

Buildings and services 

Water Environment 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-14- 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Comments 

The area within the site boundary has been 

utilised for numerous industrial processes, most 

prominent being Iron Foundry and steel works. 

Other processes warehousing and engineering 

works may also have impacted the site. There is 

the potential for viable pollutant linkages to exist 

at the site the current extent and nature of which 

are unknown, but may, if disturbed through 

construction work have a deleterious impact on 

(humans) the water environment and 

Buildings/structures . 

Potential for construction workers and end users 

to come in contact with exposed/disturbed soils 

during development. 

Good working practises should minimise dust 

generation and dispersion 

Potential of leaching of mobile phase 

contaminants into under lying groundwater 

resources or surface run-off. Surface tarmac and 

glacial soils reduce this risk. 

Potential of ground gas generation within made 

ground deposits and from underlying shallow 

mineral workings. Potential for vapour generation 

from potential hydrocarbon concentration within 

sub surface soils 

The existing drainage system mitigates to some 

extent uncontrolled surface run-off 

There is the potential for complete pollutant 

linkages to exist at this site, which could 

potentially have adverse impacts on sensitive 

receptors. 

Construction workers and buildings and services 

may be impacted by potentially contaminated 

soils. 

An evaluation is necessary to quantify and assign 

any risk(s) posed to the development considering 

the current site land use 

RISK CATEGORY RATING (CLR6) 

A MEDIUM Risk rating (Category 3) has been assigned to the site given the previous site land uses and the likely potential for 

contaminants to exist within the sub surface soils. There is likelihood for complete plausible pollutant linkages to exist at the 

site. These are likely to be prevalent during construction. 

The site is considered “suitable for use” in its current setting and context. However, during site preparation and construction 

works, there is a pathway to exposure to potentially deleterious levels of contaminants. Sensitive receptors may be impacted 

by movement (and/or) disturbance of contaminated soils. It is in this context that the site has been assigned a Medium risk 

rating. Due to the nature of the underlying soils and potential for contamination to exist, and the nature of the proposed 

development, the site requires further investigation to be deemed “Suitable for Use”.

5.0 Conclusions 


The site in its current setting is suitable for use and for related activities. 

Risks from direct contact with soil/fill materials within the site present a Low risk to the 

proposed development in respect to overall recorded contaminant concentrations with 

regard to construction workers and buildings and services. A low risk is considered 

appropriate to end users, residents and off site adjacent premises upon completion of 

the development. 

Construction workers should employ good site practices, wear appropriate PPE and 

obtain specialist advice/assistance in removal/disposal of any unusual materials/odours 

should they be encountered. 

Ground gas concentrations recorded at the site do not indicate that a significant gas 

generation and migration source exists beneath the site. An overall Low Risk has been 

assigned and as such, basic protection measures (Visqueen® 1200g DPM or equivalent) 

with all joints and penetrations suitably lapped and sealed should be utilised under 

foundations. 

Potential risks to the water environment are low overall, given the low propensity for 

contaminants to leach from surface soils, the distance to the nearest water receptor, 

and overlying insitu glacial soils. Provision/incorporation into a suitable surface water 

drainage network and sewerage system will further mitigate potential surface run-off to 

off site receptors. 

Risks to the identified receptors are considered low overall in light of laboratory and 

field monitoring data in the context of the development proposal. 

With respect to water supply pipe placement, these be upgraded to aluminum wrapped 

polyethylene (A.I P.E) and routed in clean granular corridors. Alternatively, once the 

water supply pipe route is finalised, additional samples can be obtained to re-assesses 

any risk(s) to placement of standard “plastic” (P.E) water supply pipes. 

Having completed the intrusive investigation, laboratory analysis on soil and leachate 

potential: and ground gas evolution, the site presents limited risk to further development 

in a commercial/industrial context. 

-15-

APPENDIX A 

CLEA V 1.06 SGV/GAC SETTINGS & RESULTS

CLEA Software Version 1.06 

Report generated 

Report title 

Created by 

BASIC SETTINGS 

20/06/2011 

Land Use Commercial 

Proposed New Tesco Store at Wallneuk Paisley Renfrewshire 

Stephen Milne at DAM Geotechnical Services 

090930 CLEA v1.06 Software Wallneuk Rd Paisley (1) 

Building Warehouse (post 1970) 

Receptor Female (com) Start age class 17 End age class 17 Exposure Duration 49 years 

Soil Sand 

Exposure Pathways Direct soil and dust ingestion Dermal contact with indoor dust Inhalation of indoor dust 

Consumption of homegrown produce Dermal contact with soil Inhalation of soil dust 

Soil attached to homegrown produce Inhalation of indoor vapour 

Inhalation of outdoor vapour 

Page 1 of 5


CLEA Software Version 1.06 Report generated 20-Jun-11 

Page 2 of 5 

Age Class 


Direct soil ingestion 

Exposure Frequencies (days yr -1 ) Occupation Periods (hr day -1 ) 

Consumption of 

homegrown produce 

Dermal contact with 

indoor dust 


soil 

Inhalation of dust and 

vapour, indoor 


vapour, outdoor 

1 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

2 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

3 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

4 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

5 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

6 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

7 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

8 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

9 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

10 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

11 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

12 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

13 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

14 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

15 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

16 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

17 230 0 230 170 230 170 8.3 0.7 0.14 0.14 0.05 

18 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

Indoors 

Outdoors 

Soil to skin adherence 

factors (mg cm 2 ) 

Indoor 

Outdoor 

Direct soil ingestion rate 

(g day -1 )



Page 3 of 5 

Age Class 

Receptor Female (com) 

Body weight (kg) 

Body height (m) 

Inhalation rate 

(m 3 day -1 ) 

Max exposed skin factor Consumption rates (g FW kg -1 BW day -1 ) 

Indoor (m 2 m -2 ) 

Outdoor (m 2 m -2 ) 

Total skin area 

(m 2 ) 

1 5.60 0.7 8.5 0.00 0.00 3.43E-01 7.12 10.69 16.03 1.83 2.23 3.82 

2 9.80 0.8 13.3 0.00 0.00 4.84E-01 6.85 3.30 5.46 3.96 0.54 11.96 

3 12.70 0.9 12.7 0.00 0.00 5.82E-01 6.85 3.30 5.46 3.96 0.54 11.96 

4 15.10 0.9 12.2 0.00 0.00 6.36E-01 6.85 3.30 5.46 3.96 0.54 11.96 

5 16.90 1.0 12.2 0.00 0.00 7.04E-01 3.74 1.77 3.38 1.85 0.16 4.26 

6 19.70 1.1 12.2 0.00 0.00 7.94E-01 3.74 1.77 3.38 1.85 0.16 4.26 

7 22.10 1.2 12.4 0.00 0.00 8.73E-01 3.74 1.77 3.38 1.85 0.16 4.26 

8 25.30 1.2 12.4 0.00 0.00 9.36E-01 3.74 1.77 3.38 1.85 0.16 4.26 

9 27.50 1.3 12.4 0.00 0.00 1.01E+00 3.74 1.77 3.38 1.85 0.16 4.26 

10 31.40 1.3 12.4 0.00 0.00 1.08E+00 3.74 1.77 3.38 1.85 0.16 4.26 

11 35.70 1.4 12.4 0.00 0.00 1.19E+00 3.74 1.77 3.38 1.85 0.16 4.26 

12 41.30 1.4 13.4 0.00 0.00 1.29E+00 3.74 1.77 3.38 1.85 0.16 4.26 

13 47.20 1.5 13.4 0.00 0.00 1.42E+00 3.74 1.77 3.38 1.85 0.16 4.26 

14 51.20 1.6 13.4 0.00 0.00 1.52E+00 3.74 1.77 3.38 1.85 0.16 4.26 

15 56.70 1.6 13.4 0.00 0.00 1.60E+00 3.74 1.77 3.38 1.85 0.16 4.26 

16 59.00 1.6 13.4 0.00 0.00 1.63E+00 3.74 1.77 3.38 1.85 0.16 4.26 

17 70.00 1.6 14.8 0.08 0.08 1.78E+00 2.94 1.40 1.79 1.61 0.22 2.97 

18 70.90 1.6 12.0 0.00 0.00 1.80E+00 2.94 1.40 1.79 1.61 0.22 2.97 

Green vegetables 

Root vegetables 

Tuber vegetables 

Herbaceous fruit 

Shrub fruit 

Tree fruit



Page 4 of 5 

Building Warehouse (post 1970) Soil Sand 

Building footprint (m 2 ) 

Living space air exchange rate (hr -1 ) 

Living space height (above ground, m) 

Living space height (below ground, m) 

Pressure difference (soil to enclosed space, Pa) 

Foundation thickness (m) 

Floor crack area (cm 2 ) 

Dust loading factor (μg m -3 ) 

1.91E+03 Porosity, Total (cm 5.40E-01 

1.00E+00 3.00E-01 

5.10E+00 2.40E-01 

3 cm -3 ) 

Porosity, Air-Filled (cm 3 cm -3 ) 

Porosity, Water-Filled (cm 3 cm -3 ) 

0.00E+00 Residual soil water content (cm 7.00E-02 

3 cm -3 ) 

3.40E+00 7.36E-03 

1.50E-01 3.51E-01 

Bulk density (g cm 1.18E+00 

-3 Saturated hydraulic conductivity (cm s 

) 

-1 ) 

van Genuchten shape parameter m (dimensionless) 

3.50E+03 

1.00E+02 Threshold value of wind speed at 10m (m s -1 ) 7.20E+00 

Empirical function (Fx) for dust model (dimensionless) 1.22E+00 

Ambient soil temperature (K) 

2.83E+02 

Soil pH 

Soil Organic Matter content (%) 

Fraction of organic carbon (g g -1 ) 

Effective air permeability (cm 2 Effective total fluid saturation (unitless) 

Intrinsic soil permeability (cm 

Relative soil air permeability (unitless) 

) 

2 ) 

7.10E+00 

1.00E+00 

5.80E-03 

3.62E-01 

9.83E-08 

7.68E-01 

7.54E-08


CLEA Software Version 1.06 Report generated 20-Jun-11 Page 5 of 5 

Soil - Vapour Model Air Dispersion Model 

Depth to top of source (no building) (cm) 

0 Mean annual windspeed at 10m (m s -1 ) 5.00 

Depth to top of source (beneath building) (cm) 65 Air dispersion factor at height of 0.8m * 

68.00 

Default soil gas ingress rate? Yes Air dispersion factor at height of 1.6m * 

120.00 

Soil gas ingress rate (cm 3 s -1 ) 

Building ventilation rate (cm 2.71E+06 

Averaging time surface emissions (yr) 49 

Finite vapour source model? No 

Thickness of contaminated layer (cm) 200 

3 s -1 ) 

Soil - Plant Model 





Shrub fruit 

Tree fruit 

1.50E+02 Fraction of site cover (m 2 m -2 ) 0.8 

Dry weight conversion 

factor 

* Air dispersion factor in g m -2 s -1 per kg m -3 

Homegrown fraction 

Average High 

g DW g -1 FW dimensionless g g -1 DW dimensionless 

0.096 0.05 0.33 1.00E-03 2.00E-01 

0.103 0.06 0.40 1.00E-03 1.00E+00 

0.210 0.02 0.13 1.00E-03 1.00E+00 

0.058 0.06 0.40 1.00E-03 6.00E-01 

0.166 0.09 0.60 1.00E-03 6.00E-01 

0.157 0.04 0.27 1.00E-03 6.00E-01 

Gardener type None 

Soil loading 

factor 

Preparation 

correction factor


CLEA Software Version 1.06 Page 1 of 11 


Report title 

Created by 

RESULTS 

20-Jun-11 


Stephen Milne at DAM Geotechnical Services



Page 2 of 11 

Assessment Criterion (mg kg -1 ) Ratio of ADE to HCV 50% rule? 

Saturation Limit (mg kg 

oral inhalation combined oral inhalation combined Oral Inhal 

-1 ) 

1 Arsenic 6.35E+02 6.95E+02 NR 1.00 0.91 NR NR No No 

2 Cadmium 3.99E+02 3.87E+02 2.30E+02 0.41 0.59 1.00 NR Yes No 

3 Chromium 6.25E+03 NR 6.25E+03 1.00 0.00 1.00 NR No No 

4 Copper 1.62E+05 2.49E+05 1.28E+05 0.65 0.35 1.00 NR Yes Yes 

5 Lead NR NR NR NR NR NR NR No No 

6 Mercury 4.41E+03 9.22E+04 4.23E+03 0.96 0.04 1.00 NR No No 

7 Nickel 2.22E+04 1.79E+03 NR 0.07 1.00 NR NR No No 

8 Selenium 1.30E+04 NR NR 1.00 NR NR NR No No 

9 Zinc 6.07E+05 NR NR 1.00 NR NR NR Yes No 

10 Benzene 5.53E+02 3.15E+01 2.98E+01 0.05 0.95 1.00 1.11E+03 (sol) No No 

11 Toluene 4.25E+05 7.22E+04 6.17E+04 0.15 0.85 1.00 8.35E+02 (vap) No No 

12 Ethylbenzene 1.91E+05 1.88E+04 1.71E+04 0.09 0.91 1.00 5.08E+02 (vap) No No 

13 Xylene (Mixed Isomers) 4.00E+05 6.53E+02 6.52E+02 0.00 1.00 1.00 5.64E+02 (sol) No No 

14 Xylene m- 4.00E+05 6.79E+02 6.78E+02 0.00 1.00 1.00 6.13E+02 (vap) No No 

15 Xylene o- 4.00E+05 7.27E+02 7.26E+02 0.00 1.00 1.00 4.67E+02 (sol) No No 

16 Xylene p- 4.00E+05 6.53E+02 6.52E+02 0.00 1.00 1.00 5.64E+02 (sol) No No 

17 Aliphatic C5-6 1.21E+05 4.16E+01 4.16E+01 0.00 1.00 1.00 3.39E+02 (sol) No No 



20 Aliphatic C10-12 2.02E+05 4.81E+03 4.70E+03 0.02 0.98 1.00 4.99E+01 (sol) No No



Page 3 of 11 




-1 ) 


22 Aliphatic C16-21 4.05E+06 NR NR 1.00 NR NR 9.15E+00 (sol) No No 

23 Aliphatic C21-35 4.05E+06 NR NR 1.00 NR NR 9.15E+00 (sol) No No 

24 Aromatic C8-10 (Corrected) 2.02E+05 1.11E+03 1.11E+03 0.01 0.99 1.00 6.14E+02 (sol) No No 

25 Aromatic C10-12 6.07E+04 6.60E+03 5.95E+03 0.10 0.90 1.00 3.70E+02 (sol) No No 

26 Aromatic C12-16 6.05E+04 4.95E+04 2.72E+04 0.45 0.55 1.00 1.70E+02 (sol) No No 

27 Aromatic C16-21 6.06E+04 NR NR 1.00 NR NR 5.99E+01 (sol) No No 

28 Aromatic C21-35 6.06E+04 NR NR 1.00 NR NR 4.82E+00 (sol) No No 

29 Naphthalene 4.42E+04 2.09E+02 2.08E+02 0.00 1.00 1.00 7.50E+01 (sol) No No 

30 Fluorene 7.88E+04 4.48E+05 6.70E+04 0.85 0.15 1.00 1.53E+02 (sol) No No



Page 4 of 11 

Sorbed 

Soil Distribution Media Concentrations 

Dissolved 

Vapour 

Total 

Soil 

% % % % mg kg -1 

Soil gas 

mg m -3 

Indoor Dust 

mg kg -1 

Outdoor dust 

at 0.8m 

mg m -3 

Outdoor dust 

at 1.6m 

mg m -3 

mg m -3 

mg m -3 

mg m -3 

mg kg -1 FW mg kg -1 FW mg kg -1 FW mg kg -1 FW mg kg -1 FW mg kg -1 FW 

1 Arsenic 100.0 0.0 0.0 100.0 6.35E+02 NR 3.18E+02 7.63E-06 4.32E-06 0.00E+00 0.00E+00 0.00E+00 NA NA NA NA NA NA 

2 Cadmium 99.8 0.2 0.0 100.0 2.30E+02 NR 1.15E+02 2.77E-06 1.57E-06 0.00E+00 0.00E+00 0.00E+00 NA NA NA NA NA NA 

3 Chromium 100.0 0.0 0.0 100.0 6.25E+03 NR 0.00E+00 7.51E-05 4.26E-05 0.00E+00 0.00E+00 0.00E+00 NA NA NA NA NA NA 

4 Copper 99.8 0.2 0.0 100.0 1.28E+05 NR 0.00E+00 1.54E-03 8.72E-04 0.00E+00 0.00E+00 0.00E+00 NA NA NA NA NA NA 

5 Lead 0.0 0.0 0.0 0.0 0.00E+00 NR 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 NA NA NA NA NA NA 

6 Mercury 100.0 0.0 0.0 100.0 4.23E+03 NR 0.00E+00 5.08E-05 2.88E-05 0.00E+00 0.00E+00 0.00E+00 NA NA NA NA NA NA 

7 Nickel 100.0 0.0 0.0 100.0 1.79E+03 NR 8.94E+02 2.15E-05 1.22E-05 0.00E+00 0.00E+00 0.00E+00 NA NA NA NA NA NA 

8 Selenium 99.6 0.4 0.0 100.0 1.30E+04 NR 6.51E+03 1.56E-04 8.87E-05 0.00E+00 0.00E+00 0.00E+00 NA NA NA NA NA NA 

9 Zinc 99.0 1.0 0.0 100.0 6.07E+05 NR 0.00E+00 7.29E-03 4.13E-03 0.00E+00 0.00E+00 0.00E+00 NA NA NA NA NA NA 

10 Benzene 62.7 32.5 4.7 100.0 2.98E+01 5.54E+03 1.49E+01 3.59E-07 2.03E-07 2.86E-02 4.36E-03 2.47E-03 NA NA NA NA NA NA 

11 Toluene 83.6 14.4 2.1 100.0 6.17E+04 5.01E+06 3.09E+04 7.42E-04 4.20E-04 2.56E+01 5.61E+00 3.18E+00 NA NA NA NA NA NA 

12 Ethylbenzene 91.6 7.2 1.2 100.0 1.71E+04 8.40E+05 8.55E+03 2.06E-04 1.16E-04 4.27E+00 1.15E+00 6.52E-01 NA NA NA NA NA NA 

13 Xylene (Mixed Isomers) 91.8 7.2 1.0 100.0 6.52E+02 2.47E+04 0.00E+00 7.83E-06 4.44E-06 1.26E+00 3.85E-02 2.18E-02 NA NA NA NA NA NA 

14 Xylene m- 92.5 6.6 0.9 100.0 6.78E+02 2.47E+04 0.00E+00 8.15E-06 4.62E-06 1.26E+00 3.93E-02 2.23E-02 NA NA NA NA NA NA 

15 Xylene o- 91.6 7.5 0.9 100.0 7.26E+02 2.47E+04 0.00E+00 8.72E-06 4.94E-06 1.26E+00 4.06E-02 2.30E-02 NA NA NA NA NA NA 

16 Xylene p- 91.8 7.2 1.0 100.0 6.52E+02 2.47E+04 0.00E+00 7.83E-06 4.44E-06 1.26E+00 3.85E-02 2.18E-02 NA NA NA NA NA NA 

17 Aliphatic C5-6 48.9 2.2 48.9 100.0 4.16E+01 8.00E+04 0.00E+00 5.00E-07 2.83E-07 4.16E+00 2.09E-02 1.18E-02 NA NA NA NA NA NA 




Indoor 

Vapour 

Outdoor 

vapour at 

0.8m 

Outdoor 

vapour at 

1.6m 

Green 

vegetables 

Root 

vegetables 

Tuber 

vegetables 

Herbaceous 

fruit 

Shrub fruit 

Tree fruit



Page 5 of 11 

Sorbed 


Dissolved 

Vapour 

Total 

Soil 

% % % % mg kg -1 

Soil gas 

mg m -3 

Indoor Dust 

mg kg -1 

Outdoor dust 

at 0.8m 

mg m -3 

Outdoor dust 

at 1.6m 

mg m -3 

mg m -3 

mg m -3 

mg m -3 



22 Aliphatic C16-21 100.0 0.0 0.0 100.0 4.05E+06 8.92E+05 0.00E+00 4.86E-02 2.75E-02 4.64E+01 2.17E+01 1.23E+01 NA NA NA NA NA NA 

23 Aliphatic C21-35 100.0 0.0 0.0 100.0 4.05E+06 5.19E+05 0.00E+00 4.86E-02 2.75E-02 2.70E+01 1.66E+01 9.40E+00 NA NA NA NA NA NA 

24 Aromatic C8-10 (Corrected) 97.3 2.2 0.5 100.0 1.11E+03 2.36E+04 0.00E+00 1.33E-05 7.53E-06 1.23E+00 5.85E-02 3.31E-02 NA NA NA NA NA NA 

25 Aromatic C10-12 98.5 1.4 0.1 100.0 5.95E+03 1.93E+04 0.00E+00 7.15E-05 4.05E-05 1.00E+00 1.23E-01 6.95E-02 NA NA NA NA NA NA 

26 Aromatic C12-16 99.3 0.7 0.0 100.0 2.72E+04 1.29E+04 0.00E+00 3.27E-04 1.85E-04 6.73E-01 2.15E-01 1.22E-01 NA NA NA NA NA NA 



29 Naphthalene 94.8 5.1 0.0 100.0 2.08E+02 3.49E+02 0.00E+00 2.50E-06 1.42E-06 1.76E-02 2.50E-03 1.42E-03 NA NA NA NA NA NA 

30 Fluorene 99.7 0.3 0.0 100.0 6.70E+04 2.65E+03 0.00E+00 8.05E-04 4.56E-04 1.26E-01 9.34E-02 5.29E-02 NA NA NA NA NA NA 

Indoor 

Vapour 

Outdoor 

vapour at 

0.8m 

Outdoor 

vapour at 

1.6m 

Green 

vegetables 

Root 

vegetables 

Tuber 

vegetables 

Herbaceous 

fruit 

Shrub fruit 

Tree fruit

090930 CLEA v1.06 Software Wallneuk Rd Paisley (1)



Page 6 of 11 




and attached soil 

Average Daily Exposure (mg kg -1 bw day -1 ) 


soil and dust 

Inhalation of dust 

Inhalation of vapour 

Distribution by Pathway (%) 

1 Arsenic 2.86E-04 0.00E+00 1.42E-05 1.83E-06 0.00E+00 0.00E+00 0.00E+00 94.70 0.00 4.69 0.61 0.00 0.00 0.00 0.00 

2 Cadmium 1.04E-04 0.00E+00 1.71E-07 6.63E-07 0.00E+00 1.91E-04 2.86E-07 49.69 0.00 0.08 0.32 0.00 0.00 49.77 0.14 

3 Chromium 2.81E-03 0.00E+00 0.00E+00 3.58E-06 0.00E+00 1.86E-04 0.00E+00 93.81 0.00 0.00 0.00 0.00 0.00 6.19 0.00 

4 Copper 5.76E-02 0.00E+00 5.68E-03 7.34E-05 0.00E+00 1.29E-01 2.29E-04 45.46 0.00 4.48 0.06 0.00 0.00 49.94 0.06 

5 Lead 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 

6 Mercury 1.90E-03 0.00E+00 0.00E+00 2.42E-06 0.00E+00 1.43E-05 7.14E-06 99.00 0.00 0.00 0.13 0.00 0.00 0.74 0.13 

7 Nickel 8.05E-04 0.00E+00 6.64E-06 5.14E-06 0.00E+00 1.86E-03 8.57E-07 49.10 0.00 0.41 0.31 0.00 0.00 49.82 0.05 

8 Selenium 5.86E-03 0.00E+00 0.00E+00 3.75E-05 0.00E+00 5.00E-04 8.57E-07 91.59 0.00 0.00 0.59 0.00 0.00 7.83 0.00 

9 Zinc 2.73E-01 0.00E+00 2.69E-02 3.48E-04 0.00E+00 3.86E-01 0.00E+00 45.52 0.00 4.48 0.00 0.00 0.00 50.00 0.00 

10 Benzene 1.34E-05 0.00E+00 2.22E-06 8.59E-08 1.32E-03 0.00E+00 0.00E+00 1.00 0.00 0.17 0.01 98.30 0.53 0.00 0.00 

11 Toluene 2.78E-02 0.00E+00 4.59E-03 1.78E-04 1.19E+00 1.43E-04 7.43E-03 2.26 0.00 0.37 0.01 96.00 0.74 0.01 0.60 

12 Ethylbenzene 7.70E-03 0.00E+00 1.27E-03 4.92E-05 1.99E-01 7.14E-05 1.86E-03 3.68 0.00 0.61 0.02 93.88 0.89 0.03 0.89 

13 Xylene (Mixed Isomers) 2.93E-04 0.00E+00 2.89E-05 3.74E-07 5.79E-02 1.57E-04 2.00E-03 0.49 0.00 0.00 0.00 95.84 0.10 0.26 3.31 

14 Xylene m- 3.05E-04 0.00E+00 3.01E-05 3.89E-07 5.79E-02 1.57E-04 2.00E-03 0.51 0.00 0.00 0.00 95.81 0.11 0.26 3.31 

15 Xylene o- 3.27E-04 0.00E+00 3.22E-05 4.16E-07 5.79E-02 1.57E-04 2.00E-03 0.54 0.00 0.00 0.00 95.78 0.11 0.26 3.31 

16 Xylene p- 2.93E-04 0.00E+00 2.89E-05 3.74E-07 5.79E-02 1.57E-04 2.00E-03 0.49 0.00 0.00 0.00 95.84 0.10 0.26 3.31 

17 Aliphatic C5-6 1.87E-05 0.00E+00 1.84E-06 2.38E-08 1.92E-01 0.00E+00 8.06E-03 0.01 0.00 0.00 0.00 95.94 0.02 0.00 4.03 

18 Aliphatic C6-8 1.24E-03 0.00E+00 1.22E-04 1.58E-06 5.28E+00 0.00E+00 1.21E-02 0.02 0.00 0.00 0.00 99.72 0.03 0.00 0.23 



Background (oral) 

Background 

(inhalation) 






soil and dust 



(indoor) 


(outdoor) 


Background 

(inhalation)



Page 7 of 11 







soil and dust 





22 Aliphatic C16-21 1.82E+00 0.00E+00 1.79E-01 2.32E-03 2.17E+00 0.00E+00 0.00E+00 91.03 0.00 8.97 0.00 0.00 0.00 0.00 0.00 

23 Aliphatic C21-35 1.82E+00 0.00E+00 1.79E-01 2.32E-03 1.27E+00 0.00E+00 0.00E+00 91.03 0.00 8.97 0.00 0.00 0.00 0.00 0.00 

24 Aromatic C8-10 (Corrected) 4.98E-04 0.00E+00 4.90E-05 6.34E-07 5.68E-02 3.57E-04 5.91E-03 0.78 0.00 0.08 0.00 89.13 0.15 0.56 9.30 

25 Aromatic C10-12 2.68E-03 0.00E+00 2.64E-04 3.41E-06 4.64E-02 0.00E+00 5.50E-03 4.88 0.00 0.48 0.01 84.25 0.36 0.00 10.02 

26 Aromatic C12-16 1.22E-02 0.00E+00 1.21E-03 1.56E-05 3.13E-02 7.31E-05 2.29E-05 27.28 0.00 2.69 0.03 69.01 0.78 0.16 0.05 



29 Naphthalene 9.38E-05 0.00E+00 1.20E-05 1.19E-07 8.16E-04 1.00E-04 4.00E-05 8.98 0.00 0.00 0.01 77.80 0.39 8.98 3.83 

30 Fluorene 3.01E-02 0.00E+00 3.86E-03 3.84E-05 5.94E-03 8.40E-06 2.20E-06 75.37 0.00 9.65 0.10 14.48 0.38 0.02 0.01 


Background 

(inhalation) 





soil and dust 



(indoor) 


(outdoor) 


Background 

(inhalation)



Page 8 of 11 

Oral Health Criteria Value 

(μg kg -1 BW day -1 ) 

Inhalation Health Criteria Value 


Oral Mean Daily Intake 

(μg day -1 ) 

Inhalation Mean Daily Intake 

(μg day -1 ) 

1 Arsenic ID 0.3 ID 0.002 NR NR NR NR NR NR NR 0.03 0.5 1 1 1 

2 Cadmium TDI 0.36 TDI 0.0014 13.4 0.02 NR NR NR NR NR 0.001 0.5 1 1 1 

3 Chromium TDI 3 ID 0.001 13 NR NR NR NR NR NR 0 0 1 1 1 

4 Copper TDI 160 TDI 0.286 9000 16 NR NR NR NR NR 0.1 0 1 1 1 

5 Lead NR 0 NR 0 0 0 NR NR NR NR NR 0 0 1 1 1 

6 Mercury TDI 2 TDI 0.06 1 0.5 NR NR NR NR NR 0 0 1 1 1 

7 Nickel TDI 12 TDI 0.006 130 0.06 NR NR NR NR NR 0.005 0.5 1 1 1 

8 Selenium TDI 6.4 NR 0 35 0.06 NR NR NR NR NR 0 0.5 1 1 1 

9 Zinc TDI 600 NR 0 27000 NR NR NR NR NR NR 0.1 0 1 1 1 

10 Benzene ID 0.29 ID 1.4 NR NR 1.16E-01 8.77E-06 6.64E-10 1.83 2.13 0.1 0.5 10 1 1 

11 Toluene TDI 223 TDI 1400 10 520 1.15E-01 7.78E-06 5.88E-10 2.31 2.73 0.1 0.5 10 1 1 

12 Ethylbenzene TDI 100 TDI 220 5 130 1.39E-01 7.04E-06 5.31E-10 2.65 3.15 0.1 0.5 10 1 1 

13 Xylene (Mixed Isomers) TDI 180 TDI 60 11 140 1.07E-01 7.04E-06 5.31E-10 2.65 3.15 0.1 0 1 1 1 

14 Xylene m- TDI 180 TDI 60 11 140 1.12E-01 7.03E-06 5.31E-10 2.69 3.2 0.1 0 1 1 1 

15 Xylene o- TDI 180 TDI 60 11 140 9.20E-02 7.01E-06 5.31E-10 2.63 3.12 0.1 0 1 1 1 

16 Xylene p- TDI 180 TDI 60 11 140 1.07E-01 7.04E-06 5.31E-10 2.65 3.15 0.1 0 1 1 1 

17 Aliphatic C5-6 TDI 60 TDI 200 0 564 1.81E+01 1.00E-05 1.00E-09 2.9 3.3 0.1 0 1 1 1 



20 Aliphatic C10-12 TDI 100 TDI 290 0 55.4 3.67E+01 1.00E-05 1.00E-09 5.4 6.3 0.1 0 1 1 1 

Air-water partition coefficient 

(Kaw) (cm 3 cm -3 ) 

Coefficient of Diffusion in Air 

(m 2 s -1 ) 

Coefficient of Diffusion in Water 

(m 2 s -1 ) 

log K oc (cm 3 g -1 ) 

log K ow (dimensionless) 

Dermal Absorption Fraction 

(dimensionless) 

Soil-to-dust transport factor (g 

g -1 DW) 

Sub-surface soil to indoor air 

correction factor 


Relative bioavailability via soil 

ingestion (unitless) 

Relative bioavailability via dust 

inhalation (unitless)



Page 9 of 11 






(μg day -1 ) 


(μg day -1 ) 

21 Aliphatic C12-16 TDI 100 TDI 290 0 12.2 1.23E+02 1.00E-05 1.00E-09 6.7 7.9 0.1 0 1 1 1 

22 Aliphatic C16-21 TDI 2000 NR 0 0 0 8.07E+02 1.00E-05 1.00E-09 8.8 10.4 0.1 0 1 1 1 

23 Aliphatic C21-35 TDI 2000 NR 0 0 0 4.70E+02 1.00E-05 1.00E-09 8.8 10.4 0.1 0 1 1 1 

24 Aromatic C8-10 (Corrected) TDI 100 TDI 63 25 414 2.02E-01 1.00E-05 1.00E-09 3.2 3.7 0.1 0 1 1 1 

25 Aromatic C10-12 TDI 30 TDI 57 0 385 4.79E-02 1.00E-05 1.00E-09 3.4 3.9 0.1 0 1 1 1 

26 Aromatic C12-16 TDI 30 TDI 57 5.12 1.6 1.39E-02 1.00E-05 1.00E-09 3.7 4.3 0.1 0 1 1 1 

27 Aromatic C16-21 TDI 30 NR 0 2.53 0.65 2.96E-03 1.00E-05 1.00E-09 4.2 4.9 0.1 0 1 1 1 

28 Aromatic C21-35 TDI 30 NR 0 0.93 0.2 1.09E-04 1.00E-05 1.00E-09 5.1 6 0.1 0 1 1 1 

29 Naphthalene TDI 20 TDI 0.86 7 2.8 6.62E-03 6.52E-06 5.16E-10 2.81 3.34 0.13 0 1 1 1 

30 Fluorene TDI 40 TDI 40 0.588 0.154 3.18E-03 3.63E-06 7.88E-10 4.14 4.18 0.13 0 1 1 1 


(Kaw) (cm 3 cm -3 ) 


(m 2 s -1 ) 


(m 2 s -1 ) 






g -1 DW) 










Page 10 of 11 

Soil-to-water partition coefficient 

(cm 3 g -1 ) 

Vapour pressure (Pa) 

Water solubility (mg L -1 ) 

Soil-to-plant concentration factor 

for green vegetables (mg g -1 

plant DW or FW basis over mg 

g -1 DW soil) 


for root vegetables (mg g -1 


g -1 DW soil) 


for tuber vegetables (mg g -1 


g -1 DW soil) 


for herbaceous fruit (mg g -1 


g -1 DW soil) 

1 Arsenic 5.00E+02 NR 1.25E+06 0.00043 fw 0.0004 fw 0.00023 fw 0.00033 fw 0.0002 fw 0.0011 fw 

2 Cadmium 1.00E+02 NR 1.62E+06 0.052 fw 0.029 fw 0.031 fw 0.016 fw 0.0031 fw 0.0014 fw 

3 Chromium 6.31E+03 NR 6.29E+05 0.055 dw 0.02 dw model model model model 

4 Copper 1.27E+02 NR 7.06E+05 0.8 dw 0.8 dw model model model model 

5 Lead 5.01E+03 NR 1.70E+01 0 dw 0 dw model model model model 

6 Mercury 6.31E+03 NR 5.60E-02 0.35116 dw 0.05 dw model model model model 

7 Nickel 5.00E+02 NR 2.50E+06 0.0038 fw 0.0043 fw 0.0019 fw 0.0025 fw 0.0025 fw 0.0034 fw 

8 Selenium 5.00E+01 NR 2.17E+06 0.0108 fw 0.00364 fw 0.00083 fw 0.00271 fw 0.003 fw 0.003 fw 

9 Zinc 2.07E+01 NR 4.30E+06 0.99 dw 0.99 dw model model model model 

10 Benzene 3.92E-01 6.24E+03 1.78E+03 model model model 0.00E+00 0.00E+00 model 

11 Toluene 1.18E+00 1.73E+03 5.90E+02 model model model 0.00E+00 0.00E+00 model 

12 Ethylbenzene 2.59E+00 5.53E+02 1.80E+02 model model model 0.00E+00 0.00E+00 model 

13 Xylene (Mixed Isomers) 2.59E+00 4.95E+02 2.00E+02 model model model model model model 

14 Xylene m- 2.84E+00 4.95E+02 2.00E+02 model model model model model model 

15 Xylene o- 2.47E+00 3.86E+02 1.73E+02 model model model model model model 

16 Xylene p- 2.59E+00 4.75E+02 2.00E+02 model model model model model model 

17 Aliphatic C5-6 4.61E+00 3.54E+04 3.60E+01 model model model model model model 

18 Aliphatic C6-8 2.31E+01 6.38E+03 5.40E+00 model model model model model model 

19 Aliphatic C8-10 1.83E+02 6.38E+02 4.30E-01 0.0382 dw 0.0161 dw model model model model 



for shrub fruit 

(mg g -1 plant DW or FW basis 

over mg g -1 DW soil) 


for tree fruit (mg g -1 


g -1 DW soil)



Page 11 of 11 


(cm 3 g -1 ) 






g -1 DW soil) 




g -1 DW soil) 




g -1 DW soil) 




g -1 DW soil) 


22 Aliphatic C16-21 3.66E+06 1.00E-01 2.50E-06 0.00003 dw 0.00814 dw model model model model 

23 Aliphatic C21-35 3.66E+06 1.10E-01 2.50E-06 0.00003 dw 0.00814 dw model model model model 

24 Aromatic C8-10 (Corrected) 9.19E+00 6.38E+02 6.50E+01 model model model model model model 

25 Aromatic C10-12 1.46E+01 6.38E+01 2.50E+01 model model model model model model 

26 Aromatic C12-16 2.91E+01 4.90E+00 5.80E+00 model model model model model model 

27 Aromatic C16-21 9.19E+01 1.10E-01 6.50E-01 0.057 fw 0.019 dw model model model model 

28 Aromatic C21-35 7.30E+02 4.46E-05 6.60E-03 0.0132 fw 0.0167 dw model model model model 




g -1 DW soil) 

29 Naphthalene 3.74E+00 2.31E+00 1.90E+01 4.17 dw 12.7 dw model model model model 

30 Fluorene 8.01E+01 1.26E-01 1.90E+00 model model model model model model 




over mg g -1 DW soil)

CLEA Software Version 1.06 


Report title 

Created by 

BASIC SETTINGS 

20/06/2011 



Stephen Milne at DAM Geotechnical Services 


Building Warehouse (post 1970) 

Receptor Female (com) Start age class 17 End age class 17 Exposure Duration 49 years 

Soil Sand 

Exposure Pathways Direct soil and dust ingestion Dermal contact with indoor dust Inhalation of indoor dust 

Consumption of homegrown produce Dermal contact with soil Inhalation of soil dust 

Soil attached to homegrown produce Inhalation of indoor vapour 

Inhalation of outdoor vapour 

Page 1 of 5



Page 2 of 5 

Age Class 



Exposure Frequencies (days yr -1 ) Occupation Periods (hr day -1 ) 




indoor dust 


soil 


vapour, indoor 


vapour, outdoor 

Soil to skin adherence 

factors (mg cm 2 ) 

1 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

2 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

3 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

4 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

5 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

6 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

7 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

8 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

9 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

10 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

11 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

12 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

13 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

14 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

15 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

16 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

17 230 0 230 170 230 170 8.3 0.7 0.14 0.14 0.05 

18 0 0 0 0 0 0 0.0 0.0 0.00 0.00 0.00 

Indoors 

Outdoors 

Indoor 

Outdoor 

Direct soil ingestion rate 

(g day -1 )



Page 3 of 5 

Age Class 

Receptor Female (com) 

Body weight (kg) 

Body height (m) 

Inhalation rate 

(m 3 day -1 ) 

Max exposed skin factor Consumption rates (g FW kg -1 BW day -1 ) 

Indoor (m 2 m -2 ) 

Outdoor (m 2 m -2 ) 

Total skin area 

(m 2 ) 

1 5.60 0.7 8.5 0.00 0.00 3.43E-01 7.12 10.69 16.03 1.83 2.23 3.82 

2 9.80 0.8 13.3 0.00 0.00 4.84E-01 6.85 3.30 5.46 3.96 0.54 11.96 

3 12.70 0.9 12.7 0.00 0.00 5.82E-01 6.85 3.30 5.46 3.96 0.54 11.96 

4 15.10 0.9 12.2 0.00 0.00 6.36E-01 6.85 3.30 5.46 3.96 0.54 11.96 

5 16.90 1.0 12.2 0.00 0.00 7.04E-01 3.74 1.77 3.38 1.85 0.16 4.26 

6 19.70 1.1 12.2 0.00 0.00 7.94E-01 3.74 1.77 3.38 1.85 0.16 4.26 

7 22.10 1.2 12.4 0.00 0.00 8.73E-01 3.74 1.77 3.38 1.85 0.16 4.26 

8 25.30 1.2 12.4 0.00 0.00 9.36E-01 3.74 1.77 3.38 1.85 0.16 4.26 

9 27.50 1.3 12.4 0.00 0.00 1.01E+00 3.74 1.77 3.38 1.85 0.16 4.26 

10 31.40 1.3 12.4 0.00 0.00 1.08E+00 3.74 1.77 3.38 1.85 0.16 4.26 

11 35.70 1.4 12.4 0.00 0.00 1.19E+00 3.74 1.77 3.38 1.85 0.16 4.26 

12 41.30 1.4 13.4 0.00 0.00 1.29E+00 3.74 1.77 3.38 1.85 0.16 4.26 

13 47.20 1.5 13.4 0.00 0.00 1.42E+00 3.74 1.77 3.38 1.85 0.16 4.26 

14 51.20 1.6 13.4 0.00 0.00 1.52E+00 3.74 1.77 3.38 1.85 0.16 4.26 

15 56.70 1.6 13.4 0.00 0.00 1.60E+00 3.74 1.77 3.38 1.85 0.16 4.26 

16 59.00 1.6 13.4 0.00 0.00 1.63E+00 3.74 1.77 3.38 1.85 0.16 4.26 

17 70.00 1.6 14.8 0.08 0.08 1.78E+00 2.94 1.40 1.79 1.61 0.22 2.97 

18 70.90 1.6 12.0 0.00 0.00 1.80E+00 2.94 1.40 1.79 1.61 0.22 2.97 





Shrub fruit 

Tree fruit



Page 4 of 5 

Building Warehouse (post 1970) Soil Sand 

Building footprint (m 2 ) 

Living space air exchange rate (hr -1 ) 

Living space height (above ground, m) 

Living space height (below ground, m) 

Pressure difference (soil to enclosed space, Pa) 

Foundation thickness (m) 

Floor crack area (cm 2 ) 

Dust loading factor (μg m -3 ) 

1.91E+03 Porosity, Total (cm 5.40E-01 

1.00E+00 3.00E-01 

5.10E+00 2.40E-01 

3 cm -3 ) 

Porosity, Air-Filled (cm 3 cm -3 ) 

Porosity, Water-Filled (cm 3 cm -3 ) 

0.00E+00 Residual soil water content (cm 7.00E-02 

3 cm -3 ) 

3.40E+00 Saturated hydraulic conductivity (cm s 7.36E-03 

1.50E-01 3.51E-01 

3.50E+03 

1.18E+00 

-1 ) 

van Genuchten shape parameter m (dimensionless) 

Bulk density (g cm -3 ) 

1.00E+02 Threshold value of wind speed at 10m (m s -1 ) 7.20E+00 

Empirical function (Fx) for dust model (dimensionless) 1.22E+00 

Ambient soil temperature (K) 

2.83E+02 

Soil pH 

Soil Organic Matter content (%) 

Fraction of organic carbon (g g -1 ) 

Effective total fluid saturation (unitless) 

Intrinsic soil permeability (cm 2 ) 

Relative soil air permeability (unitless) 

Effective air permeability (cm 2 ) 

7.10E+00 

1.00E+00 

5.80E-03 

3.62E-01 

9.83E-08 

7.68E-01 

7.54E-08


CLEA Software Version 1.06 Report generated 20-Jun-11 Page 5 of 5 

Soil - Vapour Model Air Dispersion Model 

Depth to top of source (no building) (cm) 

0 Mean annual windspeed at 10m (m s -1 ) 5.00 

Depth to top of source (beneath building) (cm) 65 Air dispersion factor at height of 0.8m * 

68.00 

Default soil gas ingress rate? Yes Air dispersion factor at height of 1.6m * 

120.00 

Soil gas ingress rate (cm 3 s -1 ) 

Building ventilation rate (cm 2.71E+06 

Averaging time surface emissions (yr) 49 

Finite vapour source model? No 

Thickness of contaminated layer (cm) 200 

3 s -1 ) 

Soil - Plant Model 





Shrub fruit 

Tree fruit 

1.50E+02 Fraction of site cover (m 2 m -2 ) 0.8 

Dry weight conversion 

factor 

* Air dispersion factor in g m -2 s -1 per kg m -3 

Homegrown fraction 

Average High 

g DW g -1 FW dimensionless g g -1 DW dimensionless 

0.096 0.05 0.33 1.00E-03 2.00E-01 

0.103 0.06 0.40 1.00E-03 1.00E+00 

0.210 0.02 0.13 1.00E-03 1.00E+00 

0.058 0.06 0.40 1.00E-03 6.00E-01 

0.166 0.09 0.60 1.00E-03 6.00E-01 

0.157 0.04 0.27 1.00E-03 6.00E-01 

Gardener type None 

Soil loading 

factor 

Preparation 

correction factor


CLEA Software Version 1.06 Page 1 of 11 


Report title 

Created by 

RESULTS 

20-Jun-11 


Stephen Milne at DAM Geotechnical Services



Page 2 of 11 




-1 ) 

1 Benzo(a)pyrene 3.94E+01 1.04E+02 2.86E+01 0.73 0.27 1.00 9.11E-01 (vap) No No 

2 Dibenzo(ah)anthracene 3.94E+01 1.06E+02 2.87E+01 0.73 0.27 1.00 3.93E-03 (vap) No No 

3 Phenol 1.54E+06 3.62E+04 3.53E+04 0.02 0.98 1.00 3.78E+04 (vap) No No 

4 Cyanide (Free) 1.71E+04 1.57E+06 1.70E+04 0.99 0.01 1.00 NR No No 

5 

6 

7 

8 

9 

10 

11 

12 

13 

14 

15 

16 

17 

18 

19 

20



Page 3 of 11 

21 

22 

23 

24 

25 

26 

27 

28 

29 

30 




-1 )



Page 4 of 11 


% % % % mg kg -1 

mg m -3 

mg kg -1 

mg m -3 

mg m -3 

mg m -3 

mg m -3 

mg m -3 


1 Benzo(a)pyrene 100.0 0.0 0.0 100.0 2.86E+01 6.73E-05 0.00E+00 3.44E-07 1.95E-07 3.70E-09 1.62E-06 9.15E-07 NA NA NA NA NA NA 

2 Dibenzo(ah)anthracene 100.0 0.0 0.0 100.0 2.87E+01 1.43E-04 0.00E+00 3.45E-07 1.95E-07 7.79E-09 1.35E-06 7.67E-07 NA NA NA NA NA NA 

3 Phenol 70.3 29.7 0.0 100.0 3.53E+04 4.30E+02 1.77E+04 4.25E-04 2.41E-04 2.35E-02 9.37E-02 5.31E-02 NA NA NA NA NA NA 

4 Cyanide (Free) 100.0 0.0 0.0 100.0 1.70E+04 NR 0.00E+00 2.04E-04 1.15E-04 0.00E+00 0.00E+00 0.00E+00 NA NA NA NA NA NA 

5 

6 

7 

8 

9 

10 

11 

12 

13 

14 

15 

16 

17 

18 

19 

20 

Sorbed 

Dissolved 

Vapour 

Total 

Soil 

Soil gas 

Indoor Dust 

Outdoor dust 

at 0.8m 

Outdoor dust 

at 1.6m 

Indoor 

Vapour 

Outdoor 

vapour at 

0.8m 

Outdoor 

vapour at 

1.6m 

Green 

vegetables 

Root 

vegetables 

Tuber 

vegetables 

Herbaceous 

fruit 

Shrub fruit 

Tree fruit



Page 5 of 11 

21 

22 

23 

24 

25 

26 

27 

28 

29 

30 

Sorbed 


Dissolved 

Vapour 

Total 

Soil 

% % % % mg kg -1 

Soil gas 

mg m -3 

Indoor Dust 

mg kg -1 

Outdoor dust 

at 0.8m 

mg m -3 

Outdoor dust 

at 1.6m 

mg m -3 

Indoor 

Vapour 

mg m -3 

Outdoor 

vapour at 

0.8m 

mg m -3 

Outdoor 

vapour at 

1.6m 

mg m -3 

Green 

vegetables 

Root 

vegetables 

Tuber 

vegetables 

Herbaceous 

fruit 


Shrub fruit 

Tree fruit

090930 CLEA v1.06 Software Wallneuk Rd Paisley (2)



Page 6 of 11 



1 Benzo(a)pyrene 1.29E-05 0.00E+00 1.65E-06 1.64E-08 2.80E-09 0.00E+00 0.00E+00 88.53 0.00 11.34 0.11 0.00 0.02 0.00 0.00 

2 Dibenzo(ah)anthracene 1.29E-05 0.00E+00 1.65E-06 1.64E-08 2.56E-09 0.00E+00 0.00E+00 88.53 0.00 11.34 0.11 0.00 0.02 0.00 0.00 

3 Phenol 1.59E-02 0.00E+00 7.88E-03 1.02E-04 1.23E-03 5.00E-03 5.71E-04 51.82 0.00 25.67 0.33 3.52 0.50 16.29 1.86 

4 Cyanide (Free) 7.63E-03 0.00E+00 0.00E+00 9.72E-06 0.00E+00 4.29E-03 8.57E-07 63.98 0.00 0.00 0.08 0.00 0.00 35.93 0.01 

5 

6 

7 

8 

9 

10 

11 

12 

13 

14 

15 

16 

17 

18 

19 

20 






soil and dust 




Background 

(inhalation) 






soil and dust 



(indoor) 


(outdoor) 


Background 

(inhalation)



Page 7 of 11 

21 

22 

23 

24 

25 

26 

27 

28 

29 

30 







soil and dust 




Background 

(inhalation) 





soil and dust 




(indoor) 


(outdoor) 


Background 

(inhalation)



Page 8 of 11 

1 Benzo(a)pyrene ID 0.02 ID 0.00007 NR NR 1.76E-06 4.38E-06 3.67E-10 5.11 6.18 0.13 0 1 1 1 

2 Dibenzo(ah)anthracene ID 0.02 ID 0.00007 NR NR 5.40E-06 4.08E-06 3.40E-10 5.27 6.38 0.13 0 1 1 1 

3 Phenol TDI 700 TDI 10 350 40 8.35E-06 7.90E-06 6.36E-10 1.92 1.48 0.3 0.5 1 1 1 

4 Cyanide (Free) TDI 12 TDI 0.9 300 0.06 NR NR NR NR NR 0 0 1 1 1 

5 

6 

7 

8 

9 

10 

11 

12 

13 

14 

15 

16 

17 

18 

19 

20 






(μg day -1 ) 


(μg day -1 ) 


(Kaw) (cm 3 cm -3 ) 


(m 2 s -1 ) 


(m 2 s -1 ) 






g -1 DW) 










Page 9 of 11 

21 

22 

23 

24 

25 

26 

27 

28 

29 

30 






(μg day -1 ) 


(μg day -1 ) 


(Kaw) (cm 3 cm -3 ) 


(m 2 s -1 ) 


(m 2 s -1 ) 






g -1 DW) 










Page 10 of 11 

1 Benzo(a)pyrene 7.47E+02 2.00E-08 3.80E-03 0.0125 dw 0.00221 dw model model model model 

2 Dibenzo(ah)anthracene 1.08E+03 1.66E-10 6.00E-04 0.00486 dw 0.00209 dw model model model model 

3 Phenol 4.82E-01 1.15E+01 8.41E+04 model model model 0.00E+00 0.00E+00 model 

4 Cyanide (Free) 1.00E+03 NR 0.00E+00 model model model model model model 

5 

6 

7 

8 

9 

10 

11 

12 

13 

14 

15 

16 

17 

18 

19 

20 


(cm 3 g -1 ) 






g -1 DW soil) 




g -1 DW soil) 




g -1 DW soil) 




g -1 DW soil) 








g -1 DW soil)



Page 11 of 11 

21 

22 

23 

24 

25 

26 

27 

28 

29 

30 


(cm 3 g -1 ) 






g -1 DW soil) 




g -1 DW soil) 




g -1 DW soil) 




g -1 DW soil) 








g -1 DW soil)

- 20 - 

APPENDIX B 

LABORATORY RESULTS-REVISED STATISTICAL ANALYSIS

DAM Geotechnical Services Ltd 

SITE/JOB No 

GA 9692 Tesco Wallneuk Rd Paisley 95% (UCL) EPC/RCC 

MAXIMUM VALUE TEST 

Location Depth m bgl 

Assessment 

Criteria 

Commercial/ 

Industrial pH As Cd Cr Pb Hg Se Cu Ni Zn As log TPH Total (Max Value Test 

CLEA UK v1.06* 6253 128041 606825 

SGV 2009** 640 230 410 13000 1800 

SGV 10 750 

BRE SD1 2001 5--9 

Laboratory Detection Limit mg/kg 

1.00 1.00 5.00 10.00 1.00 1.00 10.00 5.00 10.00 1.00 1.00 

BH1 1.20 6.39 1.0 1.6 71.4 10.0 1.0 1.0 10.0 58.1 71.2 

BH1 2.10 7.20 1.0 1.0 166.7 10.0 1.0 1.0 10.0 64.5 70.7 

BH2 1.20 6.97 1.0 1.0 165.2 10.0 1.0 1.0 10.0 61.5 69.1 

BH3 0.60 7.53 1.0 1.0 160.7 54.7 1.0 1.0 33.4 59.1 101.0 

BH3 1.65 6.89 1.0 1.0 185.5 10.0 1.0 1.0 10.0 62.0 71.5 

BH3 5.00 7.07 1.0 1.0 130.5 10.0 1.0 1.0 10.0 54.5 70.0 

BH4 0.80 6.69 1.0 1.0 137.6 68.1 9.0 1.0 19.7 71.5 101.0 

BH4 1.65 6.18 1.0 1.0 94.8 10.0 1.0 1.0 10.0 47.2 59.7 

BH5 0.80 7.75 1.0 1.0 76.5 10.0 1.0 1.0 23.7 35.7 77.9 

BH5 1.65 7.60 1.0 1.0 135.8 20.0 1.0 1.0 10.0 62.8 87.7 

BH5 5.00 7.12 1.0 1.0 139.3 10.0 1.0 1.0 10.0 56.8 67.6 

BH6 0.80 6.62 6.3 1.0 5.0 117.5 15.7 1.0 59.8 71.9 201.0 

BH6 2.10 6.94 1.0 1.0 161.1 10.0 1.0 1.0 10.0 54.1 68.5 

BH7 1.00 7.56 1.0 3.1 168.0 378.5 16.2 1.0 203.1 91.9 483.0 

BH7 4.00 6.49 1.0 2.1 102.3 88.3 3.4 1.0 26.9 76.2 112.0 

BH7 7.00 6.67 1.0 1.1 115.5 39.7 1.0 1.0 10.0 57.5 82.6 

BH8 1.00 7.51 1.0 1.0 300.0 51.3 1.0 1.0 67.7 166.9 167.5 

BH8 2.50 6.45 1.0 1.4 15.2 23.6 1.0 1.0 10.0 28.1 48.9 

BH9 1.00 7.97 2.5 6.7 107.9 187.6 1.0 1.0 124.5 48.8 121.0 

BH9 4.00 7.49 1.0 3.0 160.7 10.0 1.0 1.0 10.0 63.3 70.3 

BH10 1.00 6.83 1.0 1.2 5.0 10.0 1.4 1.0 10.0 22.3 36.7 

BH10 1.65 6.71 6.0 12.8 135.7 10.0 1.0 1.0 10.0 50.1 65.5 

BH10 3.00 6.76 1.0 1.0 192.6 10.0 1.0 1.0 10.0 58.1 73.0 

BH11 1.00 6.28 1.0 7.3 179.9 153.8 27.3 1.0 180.0 234.2 257.8 

BH11 2.10 7.41 1.0 3.4 98.7 10.0 1.0 1.0 10.0 65.9 74.6 

BH11 3.00 7.28 2.6 1.0 100.4 10.0 1.0 1.0 10.0 20.9 39.2 

BH11 4.50 6.97 1.0 6.6 58.4 10.0 1.0 1.0 10.0 13.1 24.4 

BH11 6.00 7.10 3.0 3.3 77.5 10.0 1.0 1.0 10.0 26.8 61.8 

BH12 1.00 7.60 103.6 1.0 2948.5 10.0 11.7 1.0 496.9 130.3 311.0 

BH12 7.00 7.26 1.0 1.0 128.8 10.0 1.0 1.0 10.0 41.9 57.8 

BH13 1.00 6.84 1.0 1.0 128.4 17.2 1.0 1.0 10.0 71.2 75.8 

BH13 4.00 7.45 10.2 3.6 95.7 10.0 1.0 1.0 10.0 53.3 65.4 

BH14 1.00 7.45 1.0 1.0 179.1 10.0 1.0 1.0 10.0 59.2 66.9 

BH14 1.65 7.19 1.0 1.0 189.9 10.0 3.1 1.0 10.0 55.4 70.0 

Min Value 

Max Value 

Location Depth (m) 

Assessment 

Criteria 

Commercial/ 

Industrial 

As log TPH Total (Max Value Test 

6.18 1.00 1.00 5.00 10.00 1.00 1.00 10.00 13.10 24.40 0.00 0.00 0.00 0.00 

7.97 103.60 12.80 2948.50 378.50 27.30 1.00 496.90 234.20 483.00 0.00 0.00 0.00 0.00 

34.00 34.00 34.00 34.00 34.00 34.00 34.00 34.00 34.00 34.00 0.00 0.00 0.00 0.00 

33.00 33.00 33.00 33.00 33.00 33.00 33.00 33.00 33.00 33.00 -1.00 -1.00 -1.00 -1.00 

7.06 4.74 2.27 209.36 41.77 3.35 1.00 43.40 64.56 102.41 mean (log) #DIV/0! mean (log) #DIV/0! 

0.45 17.58 2.56 487.59 73.79 5.88 0.00 92.99 41.38 89.90 stdev (log) #DIV/0! stdev (log) #DIV/0! 

1.70 1.70 1.70 1.70 1.70 1.70 1.70 1.70 1.70 1.70 Max Value Tes #DIV/0! Max Value Test #DIV/0! 

7.19 9.86 3.01 351.27 63.25 5.06 1.00 70.47 76.60 128.58 T Crit (10%) 2.38 T Crit (10%) 2.21 

LCL 6.16 

PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS Max Value Test #DIV/0! Max Value Test #DIV/0! 

* Values derived using CLEA v1.06 + December 2009 Guidance Documents: Science Reports (SC050021/SR2) and (SC050021/SR3) which Replaces CLR9 and CLR10 N/s Not scheduled N/d Not Detected 

** Values for Arsenic,Mercury, Selenium, Nickel and BTEX compounds have now been published (May 12th 2009) in conjunction with new TOX Reports (http://www.environment-agency.gov.uk/research/planning/64015.aspx) 

Guidance on Comparing Soil Contamination Data with a Critical Concentration: Chartered Institute of Environmental Health (CIEH) and (CL:AIRE) May 2008 (Supercedes CLR7 

The RCC Represents the 95th Percentile (UCL) Dection Limits are Based on 2009 values (see previous risk assessment) 

t derived from Table A1 (Appendix A pp46) 

Assessment 

T crit from Table B1 (Appendix A) pp50 

Location Depth 

Criteria 

Commercial/ 

Industrial 

nC5-6 >nC6-nC8 >nC8-nC10 

Total TPH- Organic 

>nC10-nC12 >nC12-nC16 >nC16-nC21 >nC21-nC35 

(nC5-nC35) matter % 

TOC % 

Loss on 

Ignition@ 

440 0 n 

n-1 

arithmetic mean 

stdev 

t 

Mean Value Test 95%ile (UCL/RCC) 

PASS/FAIL 

C % 

Asbestos 

Fibres 

Soluble 

Free Cyanide 

Sulphate 2:1 

CLEA UK v1.06* 

See speciated TPHCWG Banding for assessment criteria 

SNIFFER 50 

BS1377 1990 25 

BRE SD1 1.2 

Laboratory Reporting Limit mg/kg 

0.50 0.50 0.50 0.50 1.00 1.00 3.00 10.00 0.10 0.10 0.10 Visual Screen 2.50 0.001g/l 

BH1 1.20 N/A N/A N/A N/A N/A N/A N/A 28.48 N/S N/S 0.1 N/D 2.50 0.069 


































Min Value 

0.00 0.00 0.00 0.00 0.00 0.00 0.00 10.00 0.00 0.00 0.05 2.50 0.031 

Max Value 

0.00 0.00 0.00 0.00 0.00 0.00 0.00 59.30 0.00 0.00 0.23 2.50 0.240 

n 

0.00 0.00 0.00 0.00 0.00 0.00 0.00 34.00 0.00 0.00 34.00 34.00 34.00 

n-1 

-1.00 -1.00 -1.00 -1.00 -1.00 -1.00 -1.00 33.00 -1.00 -1.00 33.00 33.00 33.00 


#DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! 29.67 #DIV/0! #DIV/0! 0.06 2.50 0.07 

stdev 


t 

1.70 1.70 1.70 1.70 1.70 1.70 1.70 1.70 1.70 1.70 1.70 1.70 1.70 

Mean Value Test 95%ile (RCC) 


PASS/FAIL 

N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A PASS PASS PASS 

TPH Analysis follows best practice- LQM and Science Report P5-080/TR3 The UK Approach for Evaluating Human Health Risks from Petroleum Hydrocarbons in Soils. TPH is banded in the first instance based upon TPH CWG groups and a Total Value 

Obtained. Should values be detcected above the laboratory reporting limit, then these values are "split" into aromatic/aliphatic bands in order to risk assess using derived (CLEA v 1.06 December 2009) values. An assessment as to the inhaltion vapour 

pathway can then be conducted in order to quantify any risk(s) posed by the presence in particluar of low range (nC6-nC12) aromatic compouds. Dectection limits based on 2009 values. (C5-C35 group banding not condcuted in 2009) 

phenol 

2-chlorophenol 

2-methylphenol 

4-methylphenol 

TOTAL/SPECIATED PHENOLS 

2-nitrophenol 

2,4-dimethylphenol 

SGV 2009** 

1% SOM mg/kg 38000 

2.5% SOM mg/kg Long Term 

5% SOM mg/kg Exposure 


0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.10 

BH1 1.20 N/S N/S N/S N/S N/S N/S N/S N/S N/S N/S N/S N/S N/S N/S 0.1 


































Min Value 

Max Value 

n 

n-1 


stdev 

t 


PASS/FAIL 

2,4-dichlorophenol 

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.00 0.23 

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 34.00 

-1.00 -1.00 -1.00 -1.00 -1.00 -1.00 -1.00 -1.00 -1.00 -1.00 -1.00 -1.00 -1.00 -1.00 33.00 

#DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! 0.06 


1.68 1.68 1.68 1.68 1.68 1.68 1.68 1.68 1.68 1.68 1.68 1.68 1.68 1.68 1.68 


N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A PASS 

Phenols are now specited using GC/MS. Total phenols (monohydritic) is assigned an Applicable value from Table 2 pp4 of the New 2009 SGV published in June 2009. 

2,6-dichlorophenol 

4-chloro-3-methyl-phenol 

2,4,6-trichlorophenol 

2,4,5-trichlorophenol 

4-nitrophenol 

2,3,4,6-tetrachlorophenol 

pentachlorophenol 

TOTAL Phenol (mg/kg) 

Proposed New Tesco Retail Store 

at Wallneuk Road Paisley 

GA 9692 

Z:\_Public\GA CONTRACTS\GA 9692\Phase II\Revised RA June 2011\GA 9692 UCL-MAX Value 2 1

DAM Geotechnical Services Ltd 

Location Depth (m) 

Assessment 

Criteria 

Commercial/ 

Industrial 

Aromatic (C5-C6) 




TPHCWG (AROMATIC/ALIPHATIC SPLIT) 



CLEA UK v1.06* 

1% SOM mg/kg 

2.5% SOM mg/kg 

5% SOM mg/kg 

95.00 4440 1105 5952 27216 60583 60642 41.60 2763 493 4700 24970 4045004 4045004 


1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 10.00 

BH3 0.60 1.00 1.00 1.00 2.99 7.66 18.50 1.00 1.00 1.00 1.00 1.00 23.15 1.00 1.00 52.30 

BH4 1.65 1.00 1.00 1.00 8.90 12.20 1.00 1.00 1.00 1.00 1.00 13.77 1.00 10.77 1.00 45.64 

BH5 0.80 1.00 1.00 1.00 1.00 22.33 1.00 1.00 1.00 1.00 1.00 9.70 2.55 6.21 1.00 40.79 

BH5 1.65 1.00 1.00 1.00 5.61 12.22 8.95 1.00 1.00 1.00 1.00 13.23 10.74 2.49 1.00 53.24 

BH6 0.80 1.00 1.00 1.00 1.00 20.00 6.19 1.00 1.00 1.00 1.00 3.77 29.34 1.00 1.00 59.30 

BH10 1.00 1.00 1.00 1.00 1.00 1.00 11.15 1.00 1.00 1.00 1.00 6.55 12.37 10.12 1.00 40.19 

BH10 1.65 1.00 1.00 1.00 10.71 22.33 1.00 1.00 1.00 1.00 1.00 8.43 1.00 2.11 1.00 43.58 

BH10 3.00 1.00 1.00 1.00 1.00 11.91 10.53 1.00 1.00 1.00 1.00 6.12 1.00 19.44 1.00 48.00 

BH11 1.00 1.00 1.00 1.00 12.11 1.00 9.72 10.44 1.00 1.00 1.00 8.88 4.15 1.00 1.00 45.30 

BH11 2.10 1.00 1.00 1.00 16.14 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 29.02 1.00 45.16 

BH11 3.00 1.00 1.00 1.00 1.00 13.76 6.22 1.00 1.00 1.00 1.00 11.98 20.95 1.00 1.00 52.91 

BH11 4.50 1.00 1.00 1.00 1.00 1.00 24.89 1.00 1.00 1.00 1.00 8.13 16.38 1.00 1.00 49.35 

Min Value 

Max Value 

n 

n-1 


stdev 

t 


PASS/FAIL 


Aliphatic (C5-C6) 

1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 40.19 

1.00 1.00 1.00 16.14 22.33 24.89 10.44 1.00 1.00 1.00 13.77 0.05 29.02 1.00 59.30 

12.00 12.00 12.00 12.00 12.00 12.00 12.00 12.00 12.00 12.00 12.00 12.00 12.00 12.00 12.00 

11.00 11.00 11.00 11.00 11.00 11.00 11.00 11.00 11.00 11.00 11.00 11.00 11.00 11.00 11.00 

1.00 1.00 1.00 5.21 10.53 8.35 1.79 1.00 1.00 1.00 7.71 10.30 7.10 1.00 47.98 

0.00 0.00 0.00 5.41 8.30 7.49 2.73 0.00 0.00 0.00 4.27 10.12 8.99 0.00 5.66 

1.78 1.78 1.78 1.78 1.78 1.78 1.78 1.78 1.78 1.78 1.78 1.78 1.78 1.78 1.78 

1.00 1.00 1.00 7.99 14.80 12.20 3.19 1.00 1.00 1.00 9.91 15.51 11.72 1.00 50.89 

PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS N/A 

* Values derived using CLEA v1.06 + December 2009 Guidance Documents: Science Reports (SC050021/SR2)/(SC050021/SR3) and SC050021/SR7) which Replaces CLR9 and CLR10 and 

Additional guidance provide by LQM and Science Report P5-080/TR3 The UK Approach for Evaluating Human Health Risks from Petroleum Hydrocarbons in Soils 

See Accompanying (Risk Assessment Apendix A for CLEA v1.06 Inputs) Dection Limits based on 2009 values 

naphthalene 

acenaphthylene 

acenaphthene 

USEPA SPECIATED PAH 16 Results 

fluorene 

phenanthrene 

anthracene 

fluoranthene 

Location Depth 

Assessment 

Criteria 

Commercial/ 

Industrial 

CLEA UK v1.06* 208 66985 28.59 28.69 


0.01 0.1 0.1 0.01 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.01 0.1 0.01 0.1 0.1 

See Bodycote Results in Factual Report 0.01 0.10 0.10 0.01 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.01 0.10 0.01 0.10 0.1 

Min Value 

#REF! #REF! #REF! 0.01 #REF! #REF! #REF! #REF! #REF! #REF! #REF! #REF! 0.01 #REF! #REF! #REF! 

Max Value 

0.01 #REF! #REF! 0.01 #REF! #REF! #REF! #REF! #REF! #REF! #REF! #REF! 0.01 #REF! #REF! #REF! 

n 

1.00 0.00 0.00 1.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1.00 0.00 1.00 0.00 

n-1 

0.00 -1.00 -1.00 0.00 -1.00 -1.00 -1.00 -1.00 -1.00 -1.00 -1.00 -1.00 0.00 -1.00 0.00 -1.00 


0.01 #REF! #REF! 0.01 #REF! #REF! #REF! #REF! #REF! #REF! #REF! #REF! 0.01 #REF! 0.01 #REF! 

stdev 

#DIV/0! #REF! #REF! #DIV/0! #REF! #REF! #REF! #REF! #REF! #REF! #REF! #REF! #DIV/0! #REF! #DIV/0! #REF! 

t 

1.74 1.74 1.74 1.74 1.74 1.74 1.74 1.74 1.74 1.74 1.74 1.74 1.74 1.74 1.74 1.74 


#DIV/0! #REF! #REF! #DIV/0! #REF! #REF! #REF! #REF! #REF! #REF! #REF! #REF! #DIV/0! #REF! #DIV/0! #REF! 

PASS/FAIL 

#DIV/0! N/A N/A #DIV/0! N/A N/A N/A N/A N/A N/A N/A N/A #DIV/0! N/A #DIV/0! N/A 

** Values derived using CLEA v1.06 December 2009 (http://www.environment-agency.gov.uk/research/planning/40397.aspx) in conjunction with Guidance Documents: Science Reports (SC050021/SR2) (SC050021/SR3) and (SC050021/SR7) which Replaces CLR9 and CLR10 

Risk Driver Compounds have derived SGV applied highlighted in Red 

See Risk Assesment (Section 9.0) for current Rationale The Environment Agency are due to publish SGV values for PAH compounds throughout 2010 

Where laboratory results are less then the LDL (Laboratory Detection Limit) the laboratory detection limit is returned for statistical analysis (i.e a whole number) 

Assessment 

Criteria 

Commercial/ Benzene Toluene Ethyl-Benzene M- Xylene O-Xylene P- Xylene 

Location Depth m bgl Industrial 

SGV 2009** 

1% SOM 

2.5% SOM 

5% SOM 

95.00 4440 2800 3500 2600 3200 


0.05 0.05 0.05 0.10 0.05 0.05 

BH1 1.20 N/S N/S N/S N/S N/S N/S 


































Min Value 

0.00 0.00 0.00 0.00 0.00 0.00 

Max Value 

0.00 0.00 0.00 0.00 0.00 0.00 

n 

0.00 0.00 0.00 0.00 0.00 0.00 

n-1 

-1.00 -1.00 -1.00 -1.00 -1.00 -1.00 


#DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! 

stdev 


t 

1.70 1.70 1.70 1.70 1.70 1.70 



PASS/FAIL 

N/D not detected 


N/S-(Not scheduled) No GRO Compounds (C5-C6) Range detected Thus BTEX not scheduled 

pyrene 


1,2 benzanthracene 


chrysene 


benzo(b)fluoranthene 


benzo(k)fluoranthene 


benzo-a-pyrene 


indeno(1,2,3-CD) pyrene 

TOTAL TPH (mg/kg) 

1,2:5,6 dibenzanthracene 

1,12 benzo(g,h,i)perylene 

TOTAL PAH 16 components 

Proposed New Tesco Retail Store 

at Wallneuk Road Paisley 

GA 9692 

Z:\_Public\GA CONTRACTS\GA 9692\Phase II\Revised RA June 2011\GA 9692 UCL-MAX Value 2 2

- 21 - 

APPENDIX C 

UKWIR-10/WM/03/21 GUIDANCE FOR THE SELECTION OF WATER 

SUPPLY PIPES TO BE LAID IN CONTAMINATED LAND

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tÜ~í=ëÜçìäÇ=íÜÉ=ÇÉîÉäçéÉê=éêçîáÇÉ\ KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKQ= 

fåÑçêã~íáçå=ÇÉîÉäçéÉê=éêçîáÇÉë=Ñçê=íÜÉ=mo^ KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKQ= 

fåÑçêã~íáçå=ÇÉîÉäçéÉê=éêçîáÇÉë=Ñçê=íÜÉ=fp=fåîÉëíáÖ~íáçåKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKQ= 

cçêã~íë KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKQ= 

máéÉ=ã~íÉêá~äë=ëÉäÉÅíáçåKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKQ= 

máéÉ=pÉäÉÅíáçå=q~ÄäÉ KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKR= 

eÉ~äíÜ=~åÇ=p~ÑÉíó=~ëëÉëëãÉåí=~åÇ=íÜÉ=ìb^KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKS= 

oÉãÉÇá~íáçåKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKS= 

oÉãÉÇá~íáçå=éä~åKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKS= 

aì~ä=ëí~íìë=ëáíÉë KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKS= 

i~åÇ=é~êÅÉä=ëí~íìë=~ëëÉëëãÉåí=Ñçê=Åçåí~ãáå~åíë=ïáíÜáå=~=ä~êÖÉê= 

ÇÉîÉäçéãÉåí=ëáíÉ KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK S= 

m~êí=Åçåí~ãáå~íÉÇI=é~êí=åçåJÅçåí~ãáå~íÉÇ=ëáíÉë KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKT= 

`çåí~ãáå~íÉÇ=ä~åÇ=áåÑçêã~íáçå=ëçìêÅÉë KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKT= 

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Pipe Selection Table 2 

máéÉ=ã~íÉêá~ä= 

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N~= H=_qbu=H=jq_b= MKN= MKMP= m~ëë= m~ëë= m~ëë= m~ëë= 

O= NKQ= m~ëë= m~ëë= m~ëë= m~ëë= 

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jp=ïáíÜ=qf`=E~äáéÜ~íáÅ=~åÇ=~êçã~íáÅ=`RJ`NMF= 

OÉ= H=mÜÉåçäë= O= MKQ= m~ëë= m~ëë= m~ëë= m~ëë= 

OÑ= H=`êÉëçäë=~åÇ=ÅÜäçêáå~íÉÇ=éÜÉåçäë= O= MKMQ= m~ëë= m~ëë= m~ëë= m~ëë= 

P= jáåÉê~ä=çáä=`NNJÒM= NM= m~ëë= m~ëë= m~ëë= m~ëë= m~ëë= 

J=R=J= 

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çê=[U=~åÇ=bÜ= 

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Supporting documents - Renfrewshire Council

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