arpley meadows, warrington · arpley meadows, warrington contract no. 41932 page 12 of 21 6.5.4 in...

Arpley Meadows, Warrington

Contract No. 41932 1 of 21

6.4.2 The nearest surface watercourse is the River Mersey, located almost adjacent to the north west of the site. The Aecom report indicates it has moderate water quality and there are four surface water abstractions within 500m of the site.

6.4.3 An initial assessment of the risk to controlled waters has been carried out on the basis of the results of groundwater analysis undertaken on nine samples obtained from the monitoring installations across the site.

6.4.4 The groundwater results have been screened against freshwater Environmental Quality Standards (EQS), ref. 8.23, based on the proximity of the nearest surface water receptor. As there is no TPH guideline parameter the level of 10µg/l within the Water Supply Regulations 1989, ref. 8.22, has been adopted as a conservative approach.

6.4.5 The screening levels used within the controlled waters assessment have been tabulated and are detailed within Appendix 4.

6.4.6 Heavy metals, PAH and total TPH concentrations are observed to be elevated. significantly in some cases, above the relevant EQS levels in almost all samples.

6.4.7 There is no evidence within the laboratory testing undertaken of a potential on site source for the elevated groundwater concentrations. Whilst arsenic and lead have been noted as being elevated in terms of the risks to human health, they are not deemed to be significantly elevated in terms of the potential for leaching from the soil to impact on controlled waters.

6.4.8 Given the consistently comparable concentrations of all metals observed, together with the PAH and TPH results, it is considered that the results are representative of the underlying groundwater in the region. Given the proximity of major industry, together with the landfill to the southwest, it is not surprising that water quality in the area has been impacted.

6.4.9 Given the ground conditions encountered at the site and the results of this contamination assessment, it is considered that no further assessment of the risks to controlled waters will be required.

6.5 Gas Generation

6.5.1 Three gas monitoring visits have been undertaken to date, where possible during periods of low or falling atmospheric pressure. The results of the gas monitoring are included within Appendix 2.

6.5.2 A peak methane concentration of 0.2% v/v has been recorded together a maximum carbon dioxide concentration of 8.1% v/v. Significant oxygen depletion (8.1%) has been observed in one location, on one occasion.

6.5.3 Generally, flow rates have been below the level of detection, with a rate of only 0.1 l/h recorded on a few occasions.


Contract No. 41932 Page 12 of 21

6.5.4 In accordance with the methodology published in CIRIA Document C665, ref. 8.38, the maximum recorded values were taken to calculate a Gas Screening Value for the site. The current GSV calculated for carbon dioxide is 0.008l/hr, whilst that calculated for methane is 0.051l/hr. This value indicates the site to be Characteristic Situation 1 or within the Traffic Light system, into green, for which no protection measures would be required within the structures.

6.5.5 Given the organic nature of the underlying natural soils it is recommended that a continued programme of monitoring be carried out to comply with current guidance before final design is undertaken.

6.5.6 The site is not situated within an area where radon protection measures would be required.

6.6 Protection of Services

6.6.1 Due to the increasing number of developments being undertaken on potentially contaminated land, the Water Supply Industry has identified the need to protect newly laid water supply pipes. Current guidance on the selection of materials for water pipes is provided by the UK Water Industry Research Limited, ref. 8.25. However, the exact requirements should be clarified with the relevant local water utility supplier for the site.

6.6.2 An assessment of the laboratory testing has been undertaken, which indicates elevated levels of hydrocarbons are present within sporadic locations within the near surface soils which exceed the guidelines for standard plastic pipe.

6.6.3 However, given the organic content of the natural soils, the hydrocarbon concentrations may well simply be attributed to the decay of natural organic materials. Given that the site has no history of previous development, it may not be appropriate or necessary to classify the soils in this way. Clarification should be sought from the regional supplier.



6.7 Risk Evaluation

6.7.1 An updated conceptual model has been formed to reflect the findings of the contamination risk assessment. The model, detailing the current relevant pollutant linkages, is tabulated below:

Source Potential

Contaminants of Concern

Potential Pathways Receptor Group Risk

Topsoil and subsoil

Heavy Metals – Lead Arsenic

Ingestion of contaminated soil Ingestion of vegetables Entry of contaminants by skin or eye contact Inhalation of contaminated dust

Humans • Site users

• Construction

workers • Neighbouring site

users

Low to Moderate Negligible1,2

Negligible2

TPH Direct contact

Buildings, Materials and Services Plastic water supply pipes

Low

Ground Gases

Methane Carbon dioxide

Migration Ingression

Humans and buildings • Gas ingress into

buildings • Site occupants

Low

1 – Assumes that PPE is worn at all times 2 – Pathway exists only during the construction period

6.8 Summary of Risk Evaluation

6.8.1 The above assessment identifies that ‘source – pathway – receptor’ linkages potentially occur with arsenic and lead impacting upon end-users. Also, at this time, the risks from ground gases cannot be completely ruled out.

6.8.2 Elevated arsenic and lead concentrations are deemed to be widespread across the site. Whilst slight PAH exceedances have been observed, these are not deemed to be sufficiently elevated to represent any significant risk to human health.



6.8.3 The source of the elevated soil concentrations is unclear. The soil chemistry maps indicate that lead concentrations in the vicinity of the site may be raised to the levels observed and therefore the potential for them to be present at similar levels on site can’t be ruled out. However, this would not apply to arsenic.

6.8.4 Another explanation could be for the historical deposition of dredging material from the Mersey on the site. Whilst the engineering logs show no evidence for this, the historical maps indicate that the site to be ‘mud’ and possibly clear of vegetation. It’s possible that any material deposited could have been cleared from the area and used within the river embankment, although this is purely speculative. The elevated arsenic and lead may simply be due to the heavy industrial nature of the surrounding area.

6.8.5 Another possibility is the possible historical use of lead arsenate as an insecticide. The field is understood to have been formerly cropped and the use of pesticides and herbicides cannot be ruled out. As such, further testing should be considered at an appropriate future point.

6.8.6 Contaminant concentrations are elevated within water samples from below the site, but it is considered that there are representative of the wider regional water quality and as such, the site is not deemed to represent any significant risk to controlled waters.

6.8.7 Further monitoring of ground gases may provide sufficient evidence to rule out the requirement for protection measures within any future properties, should redevelopment occur.

6.8.8 It is noted that not all contaminants identified within the Aecom Report have been tested for in this initial phase of investigation. Based on the relatively benign history of this part of the wider site considered within the Aecom Report, together with the results obtained during this investigation, the presence of significant concentrations of certain other contaminants, such as PCB’s or VOCs, is considered unlikely but also may not be completely ruled out.

6.9 Waste

6.9.1 An initial assessment of the likely waste classification for any material to be disposed of has been conducted on the basis of the chemical test results obtained as part of the contamination risk assessment.

6.9.2 This assessment has been conducted using the HazWasteOnlinetm tool, ref. 8.27, the output sheets from which are included within Appendix 4.



6.9.3 The assessment indicates that the majority of material represented by the samples would be classified as non-hazardous. However, nine of the fifty-four samples tested, indicate the material represented by those samples would be hazardous due to the zinc content. It should be noted that the majority of these samples are situated within the top 500mm of soil, although one is at a slightly deeper at 2.0m.

6.9.4 Further assessment, including Waste Acceptance Criteria (WAC) testing may be required prior to disposal. Given the size of the site, a Material Management Plan should be created in accordance with best practice. In all instances, re-use should be considered wherever possible in preference to disposal to landfill.



7.0 MANAGEMENT OF CONTAMINATION

7.1 Remediation and Verification

7.1.1 The risk management framework set out in the Model Procedures for the Management of Land Contamination, CLR 11, ref. 8.28, is applicable to the redevelopment of sites that may be affected by contamination.

7.1.2 The risk management process set out in the Model Procedures has three main components:

• Risk assessment

• Options appraisal

• Implementation

7.1.3 This initial risk assessment has identified the presence of elevated arsenic and lead concentrations within the topsoil and underlying natural strata across the site. Relevant pollutant linkages have been identified, as demonstrated in the updated conceptual model.

7.1.4 An important part of the risk management process is identifying and informing all stakeholders with an interest in the outcome of the risk management project.

7.1.5 Further DQRA should be undertaken prior to any remediation strategy being formulated. Any strategy formulated should incorporate an options appraisal and summarise in detail the chosen remedial approach, along with the verification proposals. The remediation strategy should then be approved by the relevant regulatory authorities prior to implementation.

7.1.6 The remediation strategy will need to review methods of reducing or controlling the identified unacceptable risks. This could be done by removing or treating the source of contamination, removing or modifying the pathways or removing or modifying the behaviour of the receptors, to ensure there is no significant risk of significant harm to receptors from the identified contamination, in relation to the proposed end use.

7.1.7 Where remediation is required, a verification report will need to be formulated following implementation of the remediation strategy, which should provide a complete record of all remedial activities conducted on site and include all the data obtained to support the remedial objectives and demonstrate that the remediation has been effective. Any unexpected conditions encountered during the remedial works should also be detailed within the verification report.



7.1.8 Following DQRA, if required, a number of potential remedial options for dealing with the contamination identified at this site are detailed below:

7.1.9 In areas of hardstanding or under buildings, there is unlikely to be any viable pathway and as such, the risk to end-users would be negated.

7.1.10 In gardens, landscaped areas or areas likely to be used for the growing of vegetables/fruit for consumption, a capping layer of ‘inert’ material could be provided to break the pathway between the identified contamination and end users of the site. The required thickness of the capping layer could be determined using guidance provided by the BRE, ref. 8.29.

7.2 Management of Unidentified Sources of Contamination

7.2.1 There is the possibility that sources of contamination may be present on the site, which were not detected during the investigation. Should such contamination be identified or suspected during the site clearance or ground works, these should be dealt with accordingly. A number of options are available for handling this material, which include:

• The removal from site and disposal to a suitably licensed tip of all material suspected of being contaminated. The material would need to be classified prior to disposal.

• Short-term storage of the suspected material while undertaking verification testing for potential contamination. The storage area should be a contained area to ensure that contamination does not migrate and affect other areas of the site. Depending upon the amounts of material under consideration, this could be either a skip or a lined area.

• Having a suitably experienced environmental engineer either on-call or with a watching brief for the visual and olfactory assessment of the material, and sampling for verification purposes.

7.3 Consultation

7.3.1 During the development of a site, consultation may be required for a number of reasons with a number of regulatory Authorities. The following provides an indication as to the most likely Authorities with which consultation may be required.

• Local Authority. There may be a planning condition regarding contamination and consultation will be required with a designated Contaminated Land Officer within the Environmental Health Department. The Local Authority is generally concerned with human health risks. Some Authorities now require ‘Completion Certificates’ to be signed off following remediation works.



• Environment Agency. Where a site is situated above an aquifer, within a groundwater protection zone or has been designated as a special site, the Environment Agency is likely to be involved to ensure that controlled waters are protected.

• National House Building Council, NHBC. Section 4.1 of the NHBC Standards requires land management to be addressed. For a new housing development to be approved by the NHBC, any remediation will require a validation report.

7.3.2 Based on the results of any consultation, there may be specific remediation requirements imposed by one or more of the Authorities.

7.4 Risk Management During Site Works

7.4.1 During ground works, some simple measures may have to be put in place to mitigate the risk of any known or previously unidentified contamination affecting the site workers and the environs. The majority of the proposed measures represent good practice for the construction industry and include:

• Informing the site workers of any contamination on site and the potential health effects from exposure.

• Where appropriate, the provision of suitable Personal Protective Equipment (PPE) for workers who may be potentially impacted by working in areas of contamination.

• Ensuring good hygiene is enforced on site and washing facilities are maintained on the site. Workers are discouraged from smoking, eating or drinking without washing their hands first.

• Dust monitoring, and if necessary, suppression measures should be put into practice where contamination is becoming airborne.

• Site drainage should be prevented from entering any adjacent watercourse.

7.4.2 Where contaminated materials are being removed from the site they should be disposed of at a suitably licensed landfill, with a ‘duty of care’ system in place and maintained throughout the disposal operations.



8.0 REFERENCES

8.1 CLR 4, ‘Sampling strategies for contaminated land’. Report by The Centre for Research into the Built Environment, the Nottingham Trent University, DoE, 1994.

8.2 British Standards Institute: BS 10175 ‘Code of practice for the investigation of potentially contaminated sites’, BSI 2011+A1:2013.

8.3 British Standards Institute: BS 5930 ‘Code of practice for site investigations’, BSi 2015.

8.4 ISO 1997, Part 2:2007, ‘Eurocode 7 (incorporating corrigendum June 2010) – Geotechnical Design – Part 2, Ground Investigation and Design’.

8.5 ISO 22476 – 3:2005, ‘Geotechnical Investigation and Testing – Field Testing’ Part 3, Standard Penetration Test.

8.6 British Standard 1377:1990, Part 9, ‘Methods of Test for Soils for Civil Engineering Purposes’.

8.7 Stroud, M.A. ‘The Standard Penetration Test in Insensitive Clays and Soft Rocks’, Proceedings of European Symposium on Penetration Testing, Stockholm, 1974.

8.8 Stroud, M.A. and Butler, F.G. 1975 ‘The Standard Penetration Test and Engineering Properties of Glacial Materials’, Symposium of Engineering Behaviour of Glacial Materials, Birmingham University.

8.9 The Environmental Protection Act, Part IIA, Section 78, 1990.

8.10 Environment Act 1995, Section 57, DoE 1995.

8.11 Environment Agency Science Report SC050021/SR3, 2008, ‘Updated technical background to the CLEA model’.

8.12 Environment Agency Science Report SC050021, 2009, ‘Contaminants in Soil: Updated Collation of Toxicological Data and Intake Values for Humans’.

8.13 Nathanail, C.P., McCaffery, C., Gillett A.G., Ogden R.C. and Nathanail J.F. 2015. The LQM/S4ULs for Human Health Risk Assessment. Land Quality Press, Nottingham. Publication Number S4UL3208.

8.14 CLEA Software Version 1.07 (downloaded from the Environment Agency website, http://www.environment-agency.gov.uk).

8.15 DEFRA SP1010: Development of Category 4 Screening Levels for the Assessment of Land Affected by Contamination, published March 2014.

8.16 ‘Guidance on Comparing Soil Contamination Data with a Critical Concentration’, Chartered Institute of Environmental Health (CIEH) and Contaminated Land: Applications in Real Environments (CL:AIRE) May 2008.



8.17 Environment Agency Science Report SC050021/SR2 ‘Human health toxicological assessment of contaminants in soil’.

8.18 Generic Assessment Criteria for Human Health Risk Assessment, Nathanial CP, McCaffery C, Ashmore M, Cheng Y, Gillett A, Hooker P and Ogden RC, Land Quality Press, Nottingham, published November 2006.

8.19 CLR 7, ‘Assessment of risks to human health from land contamination: an overview of the development of soil guideline values and related research’. DEFRA/EA, March 2002.

8.20 CIRIA C733, ‘Asbestos in Soil and Made Ground: a guide to understanding and managing risk, 2014.

8.21 Water Supply (Water Quality) Regulations 2000, Statutory Instrument 2000 No. 3184, Crown Copyright 2000.

8.22 Water Supply (Water Quality) Regulations 1989, Statutory Instrument 1989 No. 1147, Reprinted 1993.

8.23 Directive 2008/105/EC of the European Parliament and of the Council on Environmental Quality Standards in the Field of Water Policy, amending and subsequently repealing Directives 82/176/EEC, 83/513/EEC, 84/491/EEC and 86/280/EEC and amending Directive 2000/60/EC, December 2008.

8.24 Environment Agency Science Report SC070009, 2008, ‘An Ecological Risk Assessment Framework for Contaminants in Soil’.

8.25 UK Water Industry Research Limited, ‘Guidance for the Selection of Water Supply Pipes to be used in Brownfield Sites’, report reference Number 10/WM/03/21, 2010.

8.26 Water Regulations Advisory Scheme, Information and Guidance Note, October 2002, ‘The Selection of Materials for Water Supply Pipes to be Laid in Contaminated Land’.

8.27 HazWasteOnlinetm, http://www.hazwasteonline.co.uk.

8.28 CLR 11, ‘Model Procedures for the Management of Contaminated Land’, DEFRA and Environment Agency, 2004.

8.29 BRE Digest 465, ‘Cover Systems for Land Regeneration – Thickness Cover Systems for Contaminated Land’, 2004.

8.30 ISO 22475-1:2006, ‘Geotechnical Investigation and Testing – Sampling Methods and Groundwater Measurements’ Part 1: Technical Principles for Execution.

8.31 ISO 14688 Part 1:2002 and Part 2:2004, ‘Geotechnical Investigation and Testing – Identification and Classification of Soil’.



8.32 CLR 2, ‘Guidance on preliminary site inspection of contaminated land’, Report by Applied Environmental, DoE 1994.

8.33 CLR 3 ‘Documentary Research on Industrial Sites’, Report by RPS Consultants Ltd., DOE, 1994.

8.34 CLR 8, ‘Potential contaminants for the assessment of contaminated land’. DEFRA/EA, March 2002.

8.35 Environment Agency, 2003, ‘Review of the Fate and Transport of Selected Contaminants in the Soil Environment’. Draft Technical Report P5-079/TR1. Bristol: Environment Agency.

8.36 CLR 10, ‘The Contaminated Land Exposure Assessment Model (CLEA): Technical basis and algorithms’. DEFRA/EA, March 2002.

8.37 CIRIA Reports 149 to 152, ‘Methane and Associated Hazards to Construction’, 1995.

8.38 CIRIA C665, ‘Assessing Risks Posed by Hazardous Ground Gases in Buildings’, 2007.

8.39 British Standard 8485:2007, ‘Code of Practice for the Characterisation and Remediation from Ground Gas in Affected Developments.

8.40 Office of the Deputy Prime Minister, ‘The Building Regulations 2000, Approved Document C, Site Preparation and Resistance to Contaminants and Moisture’, 2004.

8.41 Building Research Establishment, Report 414, ‘Protective Measures for Housing on Gas Contaminated Land’, 2004.

8.42 Wilson, S A and Haines, S, ‘Site Investigation and Monitoring for Soil Gas Assessment – Back to Basics’, Land Contamination and Reclamation, 2005.

8.43 Wilson S A and Card G B, ‘Reliability and Risk in Gas Protection Design’, 2004.

8.44 Boyle and Witherington, ‘Guidance on Evaluation on Development Proposals on Sites where Methane and Carbon Dioxide are present, incorporating ‘Traffic Lights’’. Report 10627-R01-(02) for NHBC, 2006.

For and on behalf of Ian Farmer Associates (1998) Limited

A.C Owen T. J. Downes MESci(Hons) MRes FGS BSc, MSc, FGS

Principal Environmental Geologist Principal Engineering Geologist

APPENDIX 1

DRAWINGS

NNNN

Reproduced with the permission of the Controller of Her Majesty’s Stationery Office, Crown copyright. Licence No. AL 100031101

PROJECT: 41932 Arpley Meadows, Warrington

FIGURE No. A1.1 SCALE: Not to Scale

TITLE: Site Location Plan

SITE

3591

00E

3591

00E

3591

50E

3591

50E

3592

00E

3592

00E

3592

50E

3592

50E

3593

00E

3593

00E

3593

50E

3593

50E

3594

00E

3594

00E

387100N 387100N

387150N 387150N

387200N 387200N

387250N 387250N

387300N 387300N

11.27

TP01A

11.26

TP01B

11.32

TP01C

11.38

TP01D

11.47

TP02D

11.25

TP02C

11.32

TP02B

11.09

TP02A

11.05

TP03A

11.26

TP03B

11.34

TP03C

11.49

TP03D

11.61

TP04D

11.25

TP04C

11.10

TP04B

10.92

TP04A

10.70

TP05A

10.96

TP05B

11.31

TP05C

11.71

TP05D

11.47

TP06D11.19

TP06C

10.94

TP06B

10.74

TP06A

10.39

TP07A

10.79

TP07B

11.09

TP07C

11.29

TP07D

11.80

TP08D

10.91

TP08B

10.47

TP08A

11.30

TP09A

11.08

TP11A

11.13

TP12A

11.14

TP12B

11.35

TP10B

11.40

TP09B

11.43

TP09C

11.24

TP10C

11.17

TP11C

11.18

TP12D

11.28

TP11D

11.32

TP10D

11.40

WS02B

11.83

WS03D

11.39

WS04D

11.09

WS07B

11.01

WS06A

11.56

WS08C

11.21

WS10A

11.09

WS11B

11.14

WS12C

11.41

WS09D

Pit Edge

TP (Trial Pit)

Key: heights refer to code

N

WS(Window sample)

Date: 26/10/16

Revision: A

Drawn By: RG Checked By: HW

FIGURE No.A1.2

Additional Comments:

Drawing Number: sss-7109

Client Ian Farmer Associates

Scale 1:1000, A3

Site Surveying Services - A.M.I.C.E.S

Suite 7

Grindleton Business Centre

Grindleton, BB7 4DH

Tel: 01200 438320

Fax07092376338

www.sitesurvey.co.uk

Land/ Engineering Surveyors

Topographic/ Volumetric Surveys

Setting Out & Control Surveys

GPS Specialists using also

To ostn02/osgm02 see spec

to OS without trig point or BM

GPS Post Process to tie any site

PROJECT:41932

all work to sss spec, some by gps

Construction Line Registered

TSA member

THE

SURVEY

ASSOCIATION

construction line

contact us for details

TITLE: Exploratory Hole Location Plan

Figure A1.3Contaminant Distribution PlanScale: NTS

41932Arpley Meadows

Key

Elevated lead & arsenic

Elevated arsenic

N.B. Distribution of elevated concentrations from 0.20m to 2.50m depth

APPENDIX 2

SITE WORK

Appendix 2 pages ii/i-ii/ii ii/i

APPENDIX 2

GENERAL NOTES ON SITE WORKS

A2.1 SITE WORK

A2.1.1 General

Site work is carried out in general accordance with the guidelines given in ISO 1997, 8.4 and BS 5930, ref. 8.3.

A2.1.2 Trial Pits

Shallow trial pits are generally dug by mechanical excavator, however, in difficult access locations or adjacent to structures, such pits may be hand dug. Pits are best used where the ground will stand unsupported and generally, the maximum depth of machine dug pits is 4m to 5m. Where personnel are required to enter pits, it is essential that side support is provided. Entry by personnel into unsupported pits deeper than 1.2m is not allowed for health and safety reasons.

Trial pits allow the in-situ condition of the ground to be examined both laterally and vertically and also allow discontinuities to be recorded. The field record should give the orientation of the pit with details of which face was logged, assessment of stability of sides of pit and groundwater as well as the strata encountered. Photographs of the pit should also be taken.

It is generally advisable to backfill the pits as soon as possible, open pits should not be left unattended.

A2.1.3 Percussive Window Sampling Rig

The percussive sampler consists of a track mounted window sampler, ref. 8.30, with tube sizes varying in diameter from 98mm to 86mm. The sample tube is driven by a drop weight, which can also be used for dynamic probing and standard SPT tests. A cutting shoe is fitted to the bottom of each tube, whilst the sample is collected in a plastic sleeve.

The borehole is extended by using progressively smaller diameter tubes.

A2.2 IN-SITU TESTS

A2.2.1 Standard Penetration Test

The Standard Penetration Test is carried out in accordance with the proposals recommended by ISO 1997, ref. 8.4, BS 1377, Part 9, 1990 ref. 8.6 and ISO 22476 ref. 8.5.

The standard penetration test, SPT, covers the determination of the resistance of soils to the penetration of a split barrel sampler. A 50mm diameter split barrel sampler is driven 450mm into the soil using a 63.5kg hammer with a 760mm drop. The penetration resistance is expressed as the number of blows required to obtain 300mm penetration below an initial seating drive of 150mm through any disturbed ground at the bottom of the borehole. The number of blows to achieve the standard penetration of 300mm is reported as the ‘N’ value.

The ‘N’ value reported on the borehole logs is as measured but may be corrected for the energy ratio (Er) of the specific test equipment.

Appendix 2 pages ii/i-ii/ii ii/ii

The test is generally carried out in fine soils, however, it may also be carried out in coarse granular soils, weak rocks and glacial tills using the same procedure as for the SPT but with a 50mm diameter, 60° apex solid cone replacing the split spoon sampler, CPT.

When attempting the standard penetration test in very dense material or weathered rocks it may be necessary to terminate the test before completion to prevent damage to the equipment. In these circumstances it is important to distinguish how the blow count relates to the penetration of the sampler. This may be achieved in the following manner:

• Where the seating drive has been completed, the test drive is terminated if 50 blows are reached before the full penetration of 300mm is achieved. The penetration for 50 blows is recorded and an approximate N value obtained by linear extrapolation of the number of blows for the partial test drive.

• If the seating drive of 150mm is not achieved within the first 25 blows, the penetration after 25 blows is recorded and the test drive then commenced.

• For tests in soft rocks, the test drive should be terminated after 100 blows where the penetration of 300mm has not been achieved.

The N-value obtained from the Standard Penetration Test may be used to assess the relative density of sands and gravels as follows:

Term SPT N-Value : Blows/300mm Penetration

Very Loose Loose Medium Dense Dense Very Dense

0 - 4 4 - 10 10 - 30 30 - 50 Over 50

A2.3 SAMPLES

A2.3.1 General

Samples have been recovered and stored in accordance with the guidelines given in ISO 22475-1:2006, ref. 8.30 and BS 5930, ref. 8.3.

E represents sample recovered in an amber jar, generally for environmental analysis

B represents large bulk disturbed samples

D represents small disturbed sample

represents water strike

represents level to which water rose

A2.4 DESCRIPTION OF SOILS

A2.4.1 General

The procedures and principles given in ISO 14688 Parts 1 and 2, ref. 8.31, supplemented by section 6 of BS 5930, ref. 8.3 have been used in the soil descriptions contained within this report.

Samples & In Situ Testing

Depth Sample ID Test Result

Strata DetailsLevel

(mAOD)

10.90

9.90

8.90

8.40

7.707.50

5.95

Depth (m)(Thickness)

(0.50)

0.50

(1.00)

1.50

(1.00)

2.50

(0.50)

3.00

(0.70)

3.703.90

(1.55)

5.45

Legend Strata Description

Grass over, brown, silty, clayey, fine and medium SAND with frequent roots and rootlets.

Soft, black, sandy, silty CLAY with occasional organic matter and organic odour.

Black, silty, clayey, fine and medium organic SAND with plant material and organic odour.

Soft, light grey, sandy, silty CLAY with rare pockets of clayey, fine and medium sand.

Light grey, clayey, silty, fine and medium SAND.

Soft, grey, sandy, silty CLAY with sand lenses.Light grey, clayey, silty, fine and medium SAND.

End of Borehole at 5.45m

1

2

3

4

5

6

7

8

9

10

GroundwaterWaterStrike

Backfill/Installation

0.50 D20.50 ES1

1.20 SPT(S) N=0 (1,0/0,0,0,0)1.40 D3

2.00 - 2.45 D42.00 SPT(S) N=0 (0,0/0,0,0,0)

2.60 D5

3.00 - 3.45 D63.00 SPT(S) N=0 (0,0/0,0,0,0)

3.60 D7

4.00 - 4.45 D94.00 SPT(S) N=12 (1,0/3,3,3,3)

4.60 D8

5.00 SPT(S) N=6 (2,2/2,1,2,1)

Contract Name: Client:Arpley Meadows, Warrington Warrington Borough CouncilContract Number: Date Started: Logged By: Checked By: Status:

41932 21/10/2016 ST HH DRAFT

Borehole ID:

WS02BSheet 1 of 1

Dynamic Sample Borehole Log

Easting:359322.6

Northing:387287.8

Ground Level:11.40mOD

Plant Used: Print Date:21/11/2016

Scale:1:50

Weather: Termination: SPT Hammer: N/R, Energy Ratio: N/R

Remarks:Service inspection pit hand excavated from GL to 1.20m.Between 1.20m and 2.00m: recovery = 100%. Between 2.00m and 3.00m: recovery = 0%. Between 3.00m and 4.00m: recovery= 100%. Between 4.00m and 5.00m: recovery = 100%.

IFA DS Template Issue Number: 3 Issue Date: 07-09-16

Borehole DiameterDepth (m) Dia (m)

InstallationDepth Top Base (m) Diameter Pipe Type

0.00 1.50 PLAIN1.50 5.45 SLOTTED

Water StrikesDepth Strike Depth Casing Depth Sealed Time (mins) Rose to (m) Remarks

3.00 0 3.00 Damp



Strata DetailsLevel

(mAOD)

11.53

10.33

9.83

9.03

6.38


(0.30)0.30

(1.20)

1.50

(0.50)

2.00

(0.80)

2.80

(2.65)

5.45


Grass over, brown, silty, clayey, fine and medium SAND with frequent rootlets (Topsoil).Brown, silty, clayey, fine and medium SAND.

Soft, grey mottled brown, silty, sandy CLAY with occasional organic matter.

Soft, black, sandy, organic CLAY with occasional peaty pockets.

At 2.00m: sand band.

Light grey, silty, fine and medium SAND.Below 3.00m: damp.

Below 4.20m: rare pockets of grey sandy clay.


1

2

3

4

5

6

7

8

9

10



0.70 D20.70 ES1

1.20 SPT(S) N=0 (0,0/0,0,0,0)

1.70 D3

2.00 - 2.45 D42.00 SPT(S) N=0 (0,0/0,0,0,0)

2.70 D5

3.00 - 3.45 D63.00 SPT(S) N=0 (0,0/0,0,0,0)

3.70 D7

4.00 SPT(S) N=1 (2,1/0,1,0,0)

4.70 D8

5.00 SPT(S) N=3 (0,0/0,1,1,1)


41932 21/10/2016 ST HH DRAFT

Borehole ID:

WS03DSheet 1 of 1


Easting:359352.7

Northing:387246.0



Scale:1:50


Remarks:Service inspection pit hand excavated from GL to 1.20m.




0.00 1.00 PLAIN1.00 2.60 SLOTTED


3.00 0 3.00 Seepage



Strata DetailsLevel

(mAOD)

11.10

10.40

9.20

8.60

7.00

6.60

5.95


(0.30)0.30

(0.70)

1.00

(1.20)

2.20

(0.60)

2.80

(1.60)

4.40(0.40)4.80

(0.65)

5.45


Grass over, brown, silty, clayey, fine and medium SAND with frequent rootlets (Topsoil).Brown, silty, clayey, fine and medium SAND.

Soft, brown, sandy, silty CLAY with occasional pockets of clayey, silty, fine and medium sand and organic remains.

At 2.00m: peaty.

Soft, black, sandy, silty CLAY with organic pockets and strong organic odour.

Light grey, silty, clayey, fine and medium SAND.Below 3.00m: damp.

Soft, black, sandy, silty CLAY with organic pockets and organic odour.

Light grey, silty, clayey, fine and medium SAND.


1

2

3

4

5

6

7

8

9

10



0.50 D20.50 ES1

1.20 - 1.65 D41.20 - 2.00 D3

1.20 SPT(S) N=2 (1,1/0,1,0,1)

2.00 - 2.45 D52.00 SPT(S) N=2 (0,0/0,1,0,1)

2.50 D6

3.00 - 3.45 D73.00 SPT(S) N=6 (2,2/1,2,2,1)

3.50 D8

4.00 - 4.45 D104.00 SPT(S) N=1 (0,0/0,0,1,0)

4.50 D9

5.00 SPT(S) N=3 (1,1/0,1,1,1)


41932 21/10/2016 ST HH DRAFT

Borehole ID:

WS04DSheet 1 of 1


Easting:359313.3

Northing:387235.4



Scale:1:50


Remarks:Service inspection pit hand excavated from GL to 1.20m.Poor recovery between 1.20m and 2.00m.Window sample collapse from 3.00m to 2.50, redrilled to 5.45m.




0.00 1.00 PLAIN1.00 5.45 SLOTTED


3.00 0 3.00 Seepage



Strata DetailsLevel

(mAOD)

10.61

9.819.61

8.41

8.01

5.56


(0.40)0.40

(0.80)

1.201.40

(1.20)

2.60(0.40)3.00

(2.45)

5.45


Grass over, soft, brown, sandy CLAY with frequent rootlets (Topsoil).

Brown, silty, fine and medium SAND with rare pockets of brown, sandy clay.

Soft, brown, silty, sandy CLAY.Very soft, black, sandy CLAY with partially decayed plant remains and strong organic odour.

Soft, light grey, sandy, silty CLAY.

Light grey, silty, clayey, fine and medium SAND with rare pockets of grey, sandy clay.


1

2

3

4

5

6

7

8

9

10



1.00 D21.00 ES1

1.20 - 1.65 D31.20 SPT(S) N=2 (1,0/1,0,1,0)1.50 D4

2.00 - 2.45 D52.00 SPT(S) N=7 (3,2/2,2,1,2)

2.70 D6

3.00 - 3.45 D73.00 SPT(S) N=7 (2,2/2,1,2,2)

3.50 D8

4.00 SPT(S) N=6 (2,1/1,2,2,1)

4.50 D9

5.00 - 5.45 D105.00 SPT(S) N=4 (1,1/1,1,1,1)


41932 21/10/2016 ST HH DRAFT

Borehole ID:

WS06ASheet 1 of 1


Easting:359257.8

Northing:387237.2



Scale:1:50






0.00 1.00 PLAIN1.00 5.45 SLOTTED




Strata DetailsLevel

(mAOD)

10.89

9.799.59

8.09

5.64


0.20

(1.10)

1.301.50

(1.50)

3.00

(2.45)

5.45


Grass over, brown, clayey, silty, fine and medium SAND with frequent rootlets (Topsoil).Brown, silty, fine and medium SAND with rare pockets of sandy clay.

Soft, brown, sandy CLAY.Soft, black grey, sandy organic CLAY with partially decaying material and strong organic odour.

Light greyish black, clayey, silty, fine and medium organic SAND with partially decaying material and organic odour.

Below 3.00m: damp.


1

2

3

4

5

6

7

8

9

10



0.10 D20.10 ES1

1.10 D41.10 ES3

1.20 - 1.65 D51.20 SPT(S) N=1 (0,0/0,0,0,1)

1.80 D62.00 - 2.45 D72.00 - 3.00 D8

2.00 SPT(S) N=1 (1,0/0,0,1,0)

3.00 - 3.45 D93.00 SPT(S) N=1 (1,0/0,1,0,0)

3.80 D104.00 - 4.45 D11

4.00 SPT(S) N=7 (1,0/0,3,2,2)

4.80 D125.00 - 5.45 D13

5.00 SPT(S) N=6 (1,1/1,1,2,2)


41932 21/10/2016 ST HH DRAFT

Borehole ID:

WS07BSheet 1 of 1


Easting:359264.3

Northing:387205.4



Scale:1:50


Remarks:Service inspection pit hand excavated from GL to 1.20m.Poor recovery between 2.00m and 3.00m.




0.00 0.70 PLAIN0.70 1.50 SLOTTED


3.00 0 3.00 Seepage



Strata DetailsLevel

(mAOD)

10.96

10.56

9.76

6.11


(0.60)

0.60(0.40)1.00

(0.80)

1.80

(3.65)

5.45


Grass over, brown, silty, fine and medium SAND (Topsoil).

Brown, clayey, fine and medium SAND.

Soft, black mottled, light grey, sandy CLAY with frequent pockets of clayey, fine and medium sand.

Below 1.30m: pockets of partially decaying plant remains and organic odour.

Loose, light black, mottled grey, slightly clayey, silty SAND.

Below 2.40m: damp.


1

2

3

4

5

6

7

8

9

10



1.10 D21.10 ES11.20 D4

1.20 - 1.65 D31.20 SPT(S) N=0 (0,0/0,0,0,0)1.50 D52.00 SPT(S) N=4 (1,2/1,1,1,1)

2.50 D6

3.00 - 3.45 D73.00 SPT(S) N=6 (1,1/1,2,2,1)

3.50 D8

4.00 SPT(S) N=5 (2,3/1,1,1,2)

4.50 D9

5.00 - 5.45 D105.00 SPT(S) N=6 (1,2/2,1,2,1)


41932 25/10/2016 ST HH DRAFT

Borehole ID:

WS08CSheet 1 of 1


Easting:359254.4

Northing:387166.3



Scale:1:50






0.00 1.00 PLAIN1.00 5.45 SLOTTED




Strata DetailsLevel

(mAOD)

10.81

9.61

8.71

8.318.11

7.21

6.71

5.96


(0.60)

0.60

(1.20)

1.80

(0.90)

2.70(0.40)3.103.30

(0.90)

4.20

(0.50)

4.70

(0.75)

5.45


Grass over, brown, silty, fine and medium SAND with rare rootlets.

Soft, brown, clayey, silty, fine and medium SAND with frequent pockets of silty, sandy clay.

Very loose, black mottled grey, slightly clayey, silty, fine and medium SAND.

Below 2.50m: damp, strong organic odour.

Light grey, mottled black, silty, fine and medium SAND.

Soft, black, slightly sandy CLAY with frequent partially decaying plant remains and strong organic odour.Very loose, light grey mottled black, silty, fine and medium SAND.

Very soft, black, slightly sandy CLAY with partially decaying plant remains and strong organic odour.

Medium dense, black, silty, fine to coarse SAND with organic odour.


1

2

3

4

5

6

7

8

9

10



0.50 D20.50 ES1

1.20 - 1.65 D71.20 SPT(S) N=3 (1,1/1,1,0,1)1.50 D3

2.00 SPT(S) N=1 (1,0/0,1,0,0)

2.60 D4

3.00 - 3.45 D83.00 SPT(S) N=3 (0,0/1,1,0,1)

3.60 D5

4.00 SPT(S) N=4 (0,0/2,1,0,1)

4.60 D6

5.00 - 5.45 D95.00 SPT(S) N=11 (2,2/2,3,2,4)


41932 ST HH DRAFT

Borehole ID:

WS09DSheet 1 of 1


Easting:359265.5

Northing:387139.6



Scale:1:50






0.00 1.00 PLAIN1.00 3.10 SLOTTED




Strata DetailsLevel

(mAOD)

10.61

10.01

9.26

8.71

7.31

7.01

5.76


(0.60)

0.60

(0.60)

1.20

(0.75)

1.95

(0.55)

2.50

(1.40)

3.90(0.30)4.20

(1.25)

5.45


Grass over, brown, silty, fine and medium SAND with frequent rootlets (Topsoil).

Brown, silty, clayey, fine and medium SAND.

Very soft, brown, sandy, silty CLAY with occasional pockets of clayey, silty, fine and medium sand.

Soft, black, sandy CLAY with strong organic odour and occasional partially decaying plant remains.

Very loose, black, very clayey, silty, fine and medium SAND with occasional pockets of sandy clay and slight organic odour.

Below 3.00m: damp.

Soft, black, sandy CLAY with strong organic odour and occasional partially decaying plant material.Loose, black, very clayey, silty, fine and medium SAND with occasional pockets of sandy clay and slight organic odour.


1

2

3

4

5

6

7

8

9

10



0.70 D20.70 ES1

1.20 - 1.65 D81.20 SPT(S) N=0 (0,0/0,0,0,0)

1.70 D3

2.00 - 2.45 D112.00 SPT(S) N=0 (2,1/0,0,0,0)

2.70 D4

3.00 - 3.45 D103.00 SPT(S) N=3 (0,0/0,1,1,1)

3.70 D5

4.00 - 4.45 D94.00 SPT(S) N=4 (1,1/1,1,1,1)4.10 D6

4.70 D7

5.00 SPT(S) N=7 (5,3/2,1,2,2)


41932 20/10/2016 ST HH DRAFT

Borehole ID:

WS10ASheet 1 of 1


Easting:359178.2

Northing:387154.5



Scale:1:50


Remarks:Service inspection pit hand excavated from GL to 1.20m.Between 2.00m and 3.00m: no recovery.




0.00 1.00 PLAIN1.00 5.45 SLOTTED




Strata DetailsLevel

(mAOD)

10.79

9.198.99

6.49

5.64


(0.30)0.30

(1.60)

1.902.10

(2.50)

4.60

(0.85)

5.45


Grass over, brown, silty, fine and medium SAND with frequent roots and rootlets (Topsoil).Very soft, brown, silty, sandy CLAY with occasional pockets of clayey, fine and medium sand.

Very soft, black, sandy organic CLAY with organic odour and occasional partial decaying plant remains with pockets of clayey, fine and medium sand.Very loose, black, clayey, silty, fine and medium, organic SAND with organic odour and partially decaying plant remains.

Below 2.10m: damp

Very soft, black, slightly sandy CLAY with strong organic odour and occasional plant remains.


1

2

3

4

5

6

7

8

9

10



0.40 D20.40 ES1

1.20 - 1.65 D31.20 SPT(S) N=1 (1,0/0,1,0,0)1.40 D4

2.00 - 2.45 D52.00 SPT(S) N=0 (0,0/0,0,0,0)

2.40 D6

3.00 - 3.45 D73.00 SPT(S) N=2 (1,0/0,0,1,1)

3.40 D8

4.00 - 4.45 D104.00 SPT(S) N=3 (0,0/0,0,1,2)

4.70 D9

5.00 SPT(S) N=4 (4,2/1,1,1,1)


41932 ST HH DRAFT

Borehole ID:

WS11BSheet 1 of 1


Easting:359189.5

Northing:387119.9



Scale:1:50






0.00 1.00 PLAIN1.00 3.60 SLOTTED


2.10 0 2.10 Seepage



Strata DetailsLevel

(mAOD)

10.75

9.859.65

6.45

6.15


(0.40)0.40

(0.90)

1.301.50

(3.20)

4.70(0.30)5.00


Brown, silty, fine and medium SAND (Topsoil).

Soft, brown, silty, sandy CLAY with pockets of clayey, fine and medium sand.

Very soft, black, slightly sandy CLAY with strong organic odour and partially decaying remains.Very soft, grey mottled, black, sandy, organic, silty CLAY with organic odour and partially decaying material with occasional pockets of grey clayey, silty, fine and medium sand.

Very soft, black, slightly sandy CLAY with strong organic odour and partially decaying remains.


1

2

3

4

5

6

7

8

9

10



1.00 D21.00 ES1

1.20 - 1.65 D91.20 SPT(S) N=0 (0,0/0,0,0,0)

2.00 - 2.45 D82.00 - 3.00 D3

2.00 SPT(S) N=0 (0,0/0,0,0,0)

3.00 - 3.45 D73.00 SPT(S) N=3 (1,2/1,1,0,1)

4.00 - 4.45 D64.00 SPT(S) N=0 (0,0/0,0,0,0)

4.80 D45.00 - 5.45 D5

5.00 SPT(S) N=1 (3,2/1,0,0,0)


41932 20/10/2016 ST HH DRAFT

Borehole ID:

WS12CSheet 1 of 1


Easting:359197.8

Northing:387089.2



Scale:1:50


Remarks:Service inspection pit hand excavated from GL to 1.20m.Poor recovery between 2.00m and 3.00m.Between 3.00m and 4.00m: no recovery.




0.00 0.50 PLAIN0.50 1.50 SLOTTED


Samples & In Situ TestingDepths Sample ID Test Result

Strata DetailsReduced

Level

11.02

10.17

7.37


0.25

(0.85)

1.10

(2.80)

3.90

Legend Strata DescriptionMADE GROUND: Grass over, brown, silty, fine and medium SAND including brick.Brown, fine and medium SAND with occasional pockets of soft, brown, sandy clay.

Soft, black, silty, sandy CLAY with strong organic odour and partially decaying plant material.

Below 3.30m: frequent partially decaying plant remains.

End of Trial Pit at 3.90m

1

2

3

4

5

6

Wat

er

0.20 D20.20 ES10.40 D40.40 ES3

1.20 D61.20 ES5

3.00 D83.00 ES7

3.90 B103.90 ES9

Contract Name: Client:Arpley Meadows, Warrington Warrington Borough CouncilContract Number: Date: Logged By: Checked By: Status:

41932 18/10/2016 ST HH DRAFT

Trial Pit ID:

TP01A

Sheet 1 of 1

Trial Pit LogEasting:

359311.8Northing:

387334.4Ground Level:

11.27mODPlant Used:

JCB 3CXDate Printed:

21/11/2016Scale:

1:40

Weather: Hole Termination: Stability: Trial pit remained dry and stable during excavation.

Dimensions: General Remarks:Final Depth: 3.90m

◄––––––––– Length (m) –––––––––►2.10m

––––

–►W

idth

(m)

◄––

–––

0.75

m Orientation: °

◄–––––––––––––––

HBSI TP Template Issue Number: 2 Issue Date: 27/04/16

Water StrikesStrike (m) Time (mins) Rose to (m) Remarks



Level

10.87

10.47

8.27

7.47


(0.40)

0.40

(0.40)

0.80

(2.20)

3.00

(0.80)

3.80

Legend Strata DescriptionGrass over, brown, sandy SILT with frequent footlets (Topsoil).

Brown, mottled dark grey, silty, fine and medium SAND.

Spongey, dark grey PEAT with frequent rootlets (Engineer notes on organic odour).

Grey, organic, silty SAND (Engineer notes slight organic odour).

Below 3.65m: slightly clayey.Between 3.65m and 3.80m: slightly clayey.


1

2

3

4

5

6

Wat

er

0.10 D20.10 ES1

0.35 D40.35 ES30.40 D60.40 ES5

0.50 - 0.70 B70.85 D90.85 ES8

1.20 - 1.70 B10

2.70 D11

3.10 - 3.60 B123.20 D143.20 ES13

3.50 - 4.20 B15

3.80 D16


41932 17/10/2016 CL HH DRAFT

Trial Pit ID:

TP01B

Sheet 1 of 1


359333.4Northing:


11.27mODPlant Used:


21/11/2016Scale:

1:40

Weather: Hole Termination: Stability: Major spalling of trial pit sides between 0.80m and 3.00m during excavation.Trial pit remained dry during excavation.


◄––––––––– Length (m) –––––––––►2.60m

––––

–►W

idth

(m)

◄––

–––

0.70

m Orientation: °

◄–––––––––––––––





Level

11.02

9.92

8.42

7.62


(0.30)0.30

(1.10)

1.40

(1.50)

2.90

(0.80)

3.70

Legend Strata DescriptionGrass over, soft, brown, sandy SILT with occasional rootlets (Topsoil).

Brown, mottled reddish brown, silty, fine to coarse SAND with silt lenses.

Spongey, dark grey PEAT with frequent fibrous peat (Engineer notes slight organic odour).

Grey, very organic, silty, fine to coarse SAND.


1

2

3

4

5

6

Wat

er

0.10 D20.10 ES10.20 D40.20 ES30.40 D60.40 ES5

0.50 - 0.60 B7

1.00 - 1.20 B8

1.40 D101.40 ES9

1.60 - 1.80 B11

2.00 D12

2.50 - 2.70 B13

2.90 D173.00 D143.00 ES15

3.50 - 3.90 B16


41932 17/10/2016 CL HH DRAFT

Trial Pit ID:

TP01C

Sheet 1 of 1


359356.5Northing:


11.32mODPlant Used:


21/11/2016Scale:

1:40

Weather: Hole Termination: Stability: Major spalling of trial pit sides between 0.00m and 3.70m.Trial pit remained dry during excavation.


◄––––––––– Length (m) –––––––––►2.60m

––––

–►W

idth

(m)

◄––

–––

0.80

m Orientation: °

◄–––––––––––––––





Level

10.98

10.08

7.78


(0.40)

0.40

(0.90)

1.30

(2.30)

3.60

Legend Strata DescriptionGrass over, soft, brown, sandy SILT with occasional rootlets (Topsoil).

Brown mottled grey, laminated, silty, fine to coarse SAND.

Spongey, grey PEAT.


1

2

3

4

5

6

Wat

er

0.20 D20.20 ES1

0.50 D40.50 ES3

0.70 - 0.90 B5

1.35 D71.35 ES6

1.65 - 1.85 B8

2.20 D102.20 ES9

2.70 - 2.90 B11

3.20 D12

3.40 - 3.60 B13


41932 17/10/2016 CL HH DRAFT

Trial Pit ID:

TP01D

Sheet 1 of 1


359379.6Northing:


11.38mODPlant Used:


21/11/2016Scale:

1:40

Weather: Hole Termination: Stability: Major spalling of trial pit sides during excavation.Trial pit remained dry during excavation.


◄––––––––– Length (m) –––––––––►2.60m

––––

–►W

idth

(m)

◄––

–––

0.70

m Orientation: °

◄–––––––––––––––





Level

10.79

10.49

8.69

7.09


(0.30)0.30

(0.30)0.60

(1.80)

2.40

(1.60)

4.00

Legend Strata DescriptionGrass over, brown, silty, fine and medium SAND with frequent rootlets (Topsoil).

Brown, silty, fine and medium SAND with silt laminations.

Dark grey, clayey, silty, fine and medium SAND with slight organic odour.

Very soft, dark grey, black mottled CLAY with organic odour and partially decaying plant remains.


1

2

3

4

5

6

Wat

er

0.20 D20.20 ES1

0.50 D40.50 ES30.70 D60.70 ES5

1.00 D81.00 ES7

1.50 D101.50 ES9

2.50 D122.50 ES11

3.50 D143.50 ES13


41932 18/10/2016 CL HH DRAFT

Trial Pit ID:

TP02A

Sheet 1 of 1


359296.9Northing:


11.09mODPlant Used:


21/11/2016Scale:

1:40

Weather: Hole Termination: Stability: Major spalling of trial pit sides between 1.00m and 2.50m. Trial pit remained dry during excavations.


◄––––––––– Length (m) –––––––––►3.00m

––––

–►W

idth

(m)

◄––

–––

0.80

m Orientation: °

◄–––––––––––––––





Level

11.02

10.72

8.82

7.32


(0.30)0.30

(0.30)0.60

(1.90)

2.50

(1.50)

4.00

Legend Strata DescriptionGrass over, dark brown, slightly clayey, silty, fine and medium SAND.

Light brown, silty, fine and medium SAND.

Dark grey, silty, fine and medium SAND with slightly organic odour.

Very soft, grey, sandy, silty CLAY with slight organic odour and rare decaying plant remains.


1

2

3

4

5

6

Wat

er

0.10 D20.10 ES1

0.40 D40.40 ES3

0.70 D60.70 ES5

1.00 D81.00 ES7

2.00 D102.00 ES9

3.00 ES11

3.50 D133.50 ES12

4.00 D154.00 ES14


41932 18/10/2016 CL HH DRAFT

Trial Pit ID:

TP02B

Sheet 1 of 1


359318.4Northing:


11.32mODPlant Used:


21/11/2016Scale:

1:40

Weather: Hole Termination: Stability: Hand pit remained dry and stable during excavation.


◄––––––––– Length (m) –––––––––►2.10m

––––

–►W

idth

(m)

◄––

–––

0.70

m Orientation: °

◄–––––––––––––––



3.00 0 0.00 seepage



Level

10.85

9.85

8.05

7.25


(0.40)

0.40

(1.00)

1.40

(1.80)

3.20

(0.80)

4.00

Legend Strata DescriptionGrass over, dark brown, silty, fine and medium SAND with rootlets.

Soft, highly friable, brown, sandy CLAY with lenses of brown, clayey, fine and medium sand.

Soft, black, silty, sandy CLAY with strong organic odour and partially decaying plant remains.

Very soft, black mottled light grey, sandy CLAY with strong, hydrocarbon odour and occasionally partially decaying plant remains.


1

2

3

4

5

6

Wat

er

0.30 B20.30 ES1

0.60 D40.60 ES3

1.50 D61.50 ES5

3.30 D83.30 ES7

4.00 D104.00 ES9


41932 18/10/2016 ST HH DRAFT

Trial Pit ID:

TP02C

Sheet 1 of 1


359340.4Northing:


11.25mODPlant Used:


21/11/2016Scale:

1:40



◄––––––––– Length (m) –––––––––►2.40m

––––

–►W

idth

(m)

◄––

–––

0.75

m Orientation: °

◄–––––––––––––––



2.50 0 0.00 seepage.



Level

11.17

10.07

8.87

7.47


(0.30)0.30

(1.10)

1.40

(1.20)

2.60

(1.40)

4.00

Legend Strata DescriptionGrass over, dark brown, silty, fine and medium SAND with rootlets (Topsoil).

Brown, silty, fine SAND including soft, brown, sandy silt and clay.


Soft, black mottled light grey, sandy CLAY with strong, hydrocarbon odour and frequent partially decaying plant remains.


1

2

3

4

5

6

Wat

er

0.10 D20.10 ES1

0.60 D40.60 ES3

1.50 B51.50 ES6

2.70 D92.70 ES8

4.00 D114.00 ES10


41932 18/10/2016 ST HH DRAFT

Trial Pit ID:

TP02D

Sheet 1 of 1


359367.8Northing:


11.47mODPlant Used:


21/11/2016Scale:

1:40



◄––––––––– Length (m) –––––––––►2.10m

––––

–►W

idth

(m)

◄––

–––

0.80

m Orientation: °

◄–––––––––––––––





Level

10.65

10.25

10.05

7.35


(0.40)

0.40

(0.40)

0.80

1.00

(2.70)

3.70

Legend Strata DescriptionGrass over, brown, slightly clayey, silty, fine and medium SAND with occasional rootlets.

Brown, silty, fine and medium SAND with occasional silt laminations.

Dark grey, silty, fine and medium SAND with slight organic odour.

Very soft, grey black mottled, organic CLAY with strong organic odour and partially decaying plant remains.


1

2

3

4

5

6

Wat

er

0.20 D20.20 ES1

0.50 D40.50 ES30.75 D60.75 ES50.90 D80.90 ES71.20 B9

2.00 D112.00 ES10

3.00 D133.00 ES12

3.70 D153.70 ES14


41932 18/10/2016 CL HH DRAFT

Trial Pit ID:

TP03A

Sheet 1 of 1


359283.2Northing:


11.05mODPlant Used:


21/11/2016Scale:

1:40

Weather: Hole Termination: Stability: Trial pit remained dry with major spalling between 0.40m and 2.50m.


◄––––––––– Length (m) –––––––––►2.10m

––––

–►W

idth

(m)

◄––

–––

0.80

m Orientation: °

◄–––––––––––––––





Level

10.96

10.36

9.26

7.56


(0.30)0.30

(0.60)

0.90

(1.10)

2.00

(1.70)

3.70

Legend Strata DescriptionGrass over, dark brown, slightly clayey, silty, fine and medium SAND with occasional rootlets.

Brown mottled, red, silty, fine and medium SAND with silt laminations.

Dark grey, slightly clayey, silty, fine and medium SAND with slight organic odour.

Dark grey, silty, fine and medium SAND with frequent rootlets.


1

2

3

4

5

6

Wat

er

0.20 D20.20 ES10.40 D40.40 ES30.60 B60.60 D70.60 ES51.00 D91.00 ES8

2.00 D112.00 ES10

3.00 D133.00 ES12


41932 18/10/2016 CL HH DRAFT

Trial Pit ID:

TP03B

Sheet 1 of 1


359304.0Northing:


11.26mODPlant Used:


21/11/2016Scale:

1:40

Weather: Hole Termination: Stability: Trial pit remained dry with major spalling of trial pit sides between 2.00m and 3.00m during excavation.


◄––––––––– Length (m) –––––––––►1.70m

––––

–►W

idth

(m)

◄––

–––

0.70

m Orientation: °

◄–––––––––––––––



1.50 0 0.00 seepage



Level

10.94

9.74

8.24

7.44


(0.40)

0.40

(1.20)

1.60

(1.50)

3.10

(0.80)

3.90

Legend Strata DescriptionGrass over, dark brown, silty, fine and medium SAND with rootlets (Topsoil)

Soft, highly friable, brown, sandy CLAY with frequent pockets of brown, clayey, fine and medium sand.


Soft to firm, black mottled light grey, sandy CLAY with strong organic odour and partially decaying plant remains.


1

2

3

4

5

6

Wat

er

0.20 D70.20 ES1

0.50 B60.50 ES2

1.70 D81.70 ES3

3.20 D93.20 ES4

3.90 D103.90 ES5


41932 18/10/2016 ST HH DRAFT

Trial Pit ID:

TP03C

Sheet 1 of 1


359327.9Northing:


11.34mODPlant Used:


21/11/2016Scale:

1:40

Weather: Hole Termination: Stability: Trial pit remained dry during excavation.Major spalling of trial pit sides between 0.40m and 3.90m.


◄––––––––– Length (m) –––––––––►2.30m

––––

–►W

idth

(m)

◄––

–––

0.80

m Orientation: °

◄–––––––––––––––





Level

11.14

10.29

9.098.99


(0.35)

0.35

(0.85)

1.20

(1.20)

2.402.50


Brown, silty, fine SAND including soft, brown, sandy silt and clay.


Soft, black mottled light grey, sandy CLAY with strong organic odour and partially decaying plant remains.


1

2

3

4

5

6

Wat

er

0.20 D20.20 ES1

0.50 B40.50 ES3

1.30 D51.30 D6

2.50 D82.50 ES7


41932 18/10/2016 ST HH DRAFT

Trial Pit ID:

TP03D

Sheet 1 of 1


359350.0Northing:


11.49mODPlant Used:


21/11/2016Scale:

1:40



◄––––––––– Length (m) –––––––––►2.20m

––––

–►W

idth

(m)

◄––

–––

0.80

m Orientation: °

◄–––––––––––––––




HVP=104kPa


Level

10.50

9.62

7.42

6.92


(0.42)

0.42

(0.88)

1.30

(2.20)

3.50

(0.50)

4.00

Legend Strata DescriptionGrass over, brown, slightly clayey, silty, fine and medium SAND with frequent rootlets (Topsoil).

Very soft, brown, slightly sandy, silty CLAY including silt laminations and slight organic odour.

Very soft, dark grey, black mottled, sandy, organic CLAY with organic odour and partially decaying plant remains.

Dark grey, silty, fine and medium SAND with occasional clay pockets.


1

2

3

4

5

6

Wat

er

0.20 D20.20 ES10.400.50 D40.50 ES3

1.00 D61.00 ES5

2.00 D82.00 ES7

3.00 D103.00 ES9

4.00 D124.00 ES11


41932 18/10/2016 HH DRAFT

Trial Pit ID:

TP04A

Sheet 1 of 1


359268.8Northing:


10.92mODPlant Used:


21/11/2016Scale:

1:40



◄––––––––– Length (m) –––––––––►1.70m

––––

–►W

idth

(m)

◄––

–––

0.60

m Orientation: °

◄–––––––––––––––





Level

10.70

9.80

8.10

7.10


(0.40)

0.40

(0.90)

1.30

(1.70)

3.00

(1.00)

4.00

Legend Strata DescriptionMADE GROUND: Vegetation over, dark brown, slightly clayey, silty, fine and medium SAND with occasional rootlets and plastic fragments.

Brown mottled, reddish brown, silty, fine and medium SAND with silt laminations.

Dark grey, slightly clayey, silty, fine and medium SAND with strong organic odour.

Grey, silty, fine and medium SAND.


1

2

3

4

5

6

Wat

er

0.20 D20.20 ES1

0.50 D40.50 ES3

0.90 - 1.10 B5

1.50 D71.50 ES6

2.50 D92.50 ES8

3.50 D113.50 ES10

3.60 - 4.00 B12


41932 18/10/2016 CL HH DRAFT

Trial Pit ID:

TP04B

Sheet 1 of 1


359289.9Northing:


11.10mODPlant Used:


21/11/2016Scale:

1:40



◄––––––––– Length (m) –––––––––►1.80m

––––

–►W

idth

(m)

◄––

–––

0.60

m Orientation: °

◄–––––––––––––––





Level

10.95

9.75

8.75

7.35


(0.30)0.30

(1.20)

1.50

(1.00)

2.50

(1.40)

3.90


Brown, silty, fine SAND with bands of soft, brown, sandy clay.

Soft, black, silty, sandy CLAY with strong organic odour and partially decaying rootlets.

Soft, black mottled light grey, sandy CLAY with strong organic odour and partially decaying plant remains.


1

2

3

4

5

6

Wat

er

0.20 D20.20 ES10.40 D40.40 ES3

1.60 D61.60 ES5

2.60 D82.60 ES7

3.90 B103.90 ES9


41932 18/10/2016 ST HH DRAFT

Trial Pit ID:

TP04C

Sheet 1 of 1


359314.6Northing:


11.25mODPlant Used:


21/11/2016Scale:

1:40

Weather: Hole Termination: Stability: Trial pit remained dry during excavation.Major spalling of trial pit sides below 2.70m.


◄––––––––– Length (m) –––––––––►2.00m

––––

–►W

idth

(m)

◄––

–––

0.80

m Orientation: °

◄–––––––––––––––



2.70 0 0.00



Level

11.21

10.01

8.41

7.81


(0.40)

0.40

(1.20)

1.60

(1.60)

3.20

(0.60)

3.80

Legend Strata DescriptionGrass over, dark brown, silty, fine and medium SAND with frequent roots and rootlets.

Soft, highly friable, brown, sandy CLAY with frequent pockets of brown, fine and medium sand.

Soft, black, silty, sandy CLAY with strong organic odour and old partially decaying rootlets.

Soft, black mottled light grey, sandy CLAY with very strong organic odour and frequent partially decaying plant matter.


1

2

3

4

5

6

Wat

er

0.20 D20.20 ES1

0.60 D40.60 ES3

1.70 B61.70 ES5

3.30 D83.30 ES7

3.80 D103.80 ES9


41932 18/10/2016 ST HH DRAFT

Trial Pit ID:

TP04D

Sheet 1 of 1


359336.1Northing:


11.61mODPlant Used:


21/11/2016Scale:

1:40



◄––––––––– Length (m) –––––––––►2.80m

––––

–►W

idth

(m)

◄––

–––

0.75

m Orientation: °

◄–––––––––––––––





Level

10.30

8.60

6.80


(0.40)

0.40

(1.70)

2.10

(1.80)

3.90

Legend Strata DescriptionGrass over, brown, slightly clayey, silty, fine and medium SAND including frequent rootlets (Topsoil).

Brown mottled, reddish brown, silty, fine and medium SAND with clay laminations.

Soft, dark grey, black mottled, organic CLAY with partially decaying plant remains.


1

2

3

4

5

6

Wat

er

0.20 D20.20 ES1

0.50 D40.50 ES3

1.00 D61.00 ES5

1.50 D81.50 ES7

2.00 D102.00 ES9

3.00 D123.00 ES11

3.90 D143.90 ES13


41932 18/10/2016 CL HH DRAFT

Trial Pit ID:

TP05A

Sheet 1 of 1


359255.2Northing:


10.70mODPlant Used:


21/11/2016Scale:

1:40



◄––––––––– Length (m) –––––––––►1.80m

––––

–►W

idth

(m)

◄––

–––

0.70

m Orientation: °

◄–––––––––––––––





Level

10.56

9.46

7.66


(0.40)

0.40

(1.10)

1.50

(1.80)

3.30

Legend Strata DescriptionGrass over brown, soft, sandy CLAY with rootlets (Topsoil).

Light brown, silty, fine and medium SAND.

Soft, grey, sandy, silty CLAY.


1

2

3

4

5

6

Wat

er

0.20 D10.20 ES2

0.50 D30.50 ES4

0.80 D50.80 ES6

1.50 D71.50 ES8

3.30 D93.30 ES10


41932 19/10/2016 CL HH DRAFT

Trial Pit ID:

TP05B

Sheet 1 of 1


359275.7Northing:


10.96mODPlant Used:


21/11/2016Scale:

1:40

Weather: Hole Termination: Stability: Trial pit remained dry during excavation.Major spalling of trial pit sides during excavation.


◄––––––––– Length (m) –––––––––►2.50m

––––

–►W

idth

(m)

◄––

–––

0.70

m Orientation: °

◄–––––––––––––––





Level

10.91

10.31

8.41

7.41


(0.40)

0.40

(0.60)

1.00

(1.90)

2.90

(1.00)

3.90

Legend Strata DescriptionGrass over, brown, silty, clayey, fine and medium SAND with frequent rootlets (Topsoil).

Soft, brown, sandy CLAY with lenses of sand.

Soft, black, sandy CLAY with strong organic odour and partially decaying plant remains.

Soft, black mottled grey, slightly sandy CLAY with strong organic odour and partially decaying plant remains and pockets of grey sand.


1

2

3

4

5

6

Wat

er

0.20 D20.20 ES1

0.50 D40.50 ES3

1.10 D61.10 ES5

3.00 D83.00 ES7

3.90 B103.90 ES9


41932 19/10/2016 ST HH DRAFT

Trial Pit ID:

TP05C

Sheet 1 of 1


359297.6Northing:


11.31mODPlant Used:


21/11/2016Scale:

1:40



◄––––––––– Length (m) –––––––––►2.20m

––––

–►W

idth

(m)

◄––

–––

0.80

m Orientation: °

◄–––––––––––––––





Level

10.91

10.01

9.11

7.91


(0.80)

0.80

(0.90)

1.70

(0.90)

2.60

(1.20)

3.80

Legend Strata DescriptionGrass over, brown, slightly clayey, fine and medium SAND with frequent rootlets.

Brown, silty, clayey, fine and medium SAND with occasional pockets of clay.

Soft, light grey to black, sandy, organic CLAY with strong odour and partially decaying plant remains.

Soft, black mottled light grey, slightly sandy CLAY with occasional strong organic odour. Partially decaying plant remains and occasional pockets of light grey sand.


1

2

3

4

5

6

Wat

er

0.50 D20.50 ES1

1.00 D41.00 ES3

1.80 D61.80 ES5

2.70 B82.70 ES7

3.80 D103.80 ES9


41932 19/10/2016 ST HH DRAFT

Trial Pit ID:

TP05D

Sheet 1 of 1


359322.2Northing:


11.71mODPlant Used:


21/11/2016Scale:

1:40



◄––––––––– Length (m) –––––––––►3.10m

––––

–►W

idth

(m)

◄––

–––

0.60

m Orientation: °

◄–––––––––––––––





Level

10.34

9.74

6.74


(0.40)

0.40

(0.60)

1.00

(3.00)

4.00

Legend Strata DescriptionGrass over, soft, brown, slightly sandy, silty CLAY including frequent rootlets (Topsoil).

Soft, brown CLAY with lenses of sand.

Soft, dark grey, silty, organic CLAY with strong organic odour and partially decaying plant remains.


1

2

3

4

5

6

Wat

er

0.20 D20.20 ES1

0.50 D40.50 ES3

1.00 B5


41932 19/10/2016 CL HH DRAFT

Trial Pit ID:

TP06A

Sheet 1 of 1


359237.8Northing:


10.74mODPlant Used:


21/11/2016Scale:

1:40

Weather: Hole Termination: Stability: Trial pit remained stable during excavation.


◄––––––––– Length (m) –––––––––►2.10m

––––

–►W

idth

(m)

◄––

–––

1.00

m Orientation: °

◄–––––––––––––––



1.20 0 0.00 seepage.



Level

10.55

9.95

8.55


(0.40)

0.40

(0.60)

1.00

(1.40)

2.40

Legend Strata DescriptionGrass over, brown, slightly clayey, sandy SILT with frequent rootlets (Topsoil).

Brown, brown CLAY with frequent silt lenses.

Soft, dark grey, sandy, clayey SILT.


1

2

3

4

5

6

Wat

er

0.50 D20.50 ES1

1.00 D41.00 ES3


41932 19/10/2016 CL HH DRAFT

Trial Pit ID:

TP06B

Sheet 1 of 1


359261.2Northing:


10.95mODPlant Used:


21/11/2016Scale:

1:40

Weather: Hole Termination: Stability: Trial pit remained dry with major spalling of trial pit sides during excavation between 1.50m and 2.40m.


◄––––––––– Length (m) –––––––––►2.07m

––––

–►W

idth

(m)

◄––

–––

0.80

m Orientation: °

◄–––––––––––––––





Level

10.74

9.09

8.29

7.49


(0.45)

0.45

(1.65)

2.10

(0.80)

2.90

(0.80)

3.70

Legend Strata DescriptionGrass over, brown, slightly clayey, fine and medium SAND with frequent rootlets (Topsoil).

Soft, brown, friable, sandy CLAY with occasional pockets of fine and medium sand.

Soft, black, sandy, organic CLAY with partially decaying plant material and strong organic odour.

Soft, light grey mottled black, sandy CLAY with frequent partially decaying plant material and strong organic odour.


1

2

3

4

5

6

Wat

er

2.00 D22.00 ES1

3.00 D43.00 ES3


41932 19/10/2016 ST HH DRAFT

Trial Pit ID:

TP06C

Sheet 1 of 1


359282.4Northing:


11.19mODPlant Used:


21/11/2016Scale:

1:40



◄––––––––– Length (m) –––––––––►2.50m

––––

–►W

idth

(m)

◄––

–––

0.60

m Orientation: °

◄–––––––––––––––





Level

11.02

10.27

7.77


(0.45)

0.45

(0.75)

1.20

(2.50)

3.70

Legend Strata DescriptionGrass over, brown, slightly clayey, fine and medium SAND with frequent roots and rootlets.

Brown, silty, clayey, fine and medium SAND with occasional pockets of clay.

Soft, friable, light grey mottled black, sandy CLAY with strong organic odour and occasional peaty pockets.

Below 3.00m: damp.


1

2

3

4

5

6

Wat

er

0.30 D20.30 ES1

0.70 D40.70 ES3

1.30 B61.30 ES5

2.50 D82.50 ES7

3.70 D103.70 ES9


41932 19/10/2016 ST HH DRAFT

Trial Pit ID:

TP06D

Sheet 1 of 1


359306.7Northing:


11.47mODPlant Used:


21/11/2016Scale:

1:40

Weather: Hole Termination: Stability: Trial pit remained stable during excavation.


◄––––––––– Length (m) –––––––––►2.80m

––––

–►W

idth

(m)

◄––

–––

0.60

m Orientation: °

◄–––––––––––––––





Level

9.99

9.69

7.49


(0.40)

0.40(0.30)0.70

(2.20)

2.90

Legend Strata DescriptionGrass over, soft, brown, slightly sandy CLAY with frequent rootlets (Topsoil).

Brown, interlaminated SILT and SAND.

Soft, clayey SILT.


1

2

3

4

5

6

Wat

er

0.20 D20.20 ES1

0.50 D40.50 ES3


41932 19/10/2016 CL HH DRAFT

Trial Pit ID:

TP07A

Sheet 1 of 1


359224.2Northing:


10.39mODPlant Used:


21/11/2016Scale:

1:40

Weather: Hole Termination: Stability: Trial pit remained dry with major spalling during excavation between 1.50 to 2.90m.


◄––––––––– Length (m) –––––––––►2.30m

––––

–►W

idth

(m)

◄––

–––

0.90

m Orientation: °

◄–––––––––––––––



1.00 0 0.00 seepage



Level

10.44

9.54

7.39


(0.35)

0.35

(0.90)

1.25

(2.15)

3.40

Legend Strata DescriptionGrass over, brown, clayey, fine SAND with rootlets.

Brown, clayey, silty, fine SAND.

Grey, silty, organic, fine and medium SAND with strong organic odour and partially decaying remains.


1

2

3

4

5

6

Wat

er

0.50 ES1

1.20 ES2


41932 19/10/2016 MH HH DRAFT

Trial Pit ID:

TP07B

Sheet 1 of 1


359245.8Northing:


10.79mODPlant Used:


21/11/2016Scale:

1:40

Weather: Hole Termination: Stability: Trial pit remained dry with major spalling of trial pit sides during excavation between 2.30m and 3.00m.


◄––––––––– Length (m) –––––––––►2.10m

––––

–►W

idth

(m)

◄––

–––

1.00

m Orientation: °

◄–––––––––––––––





Level

10.89

8.69

8.09

7.49


0.20

(2.20)

2.40

(0.60)

3.00

(0.60)

3.60

Legend Strata DescriptionGrass over, brown, slightly clayey, fine and medium SAND with frequent rootlets.Soft, brown, friable, sandy CLAY with occasional pockets of brown fine and medium sand.

Soft, black, sandy, organic CLAY with partially decaying plant material and strong organic odour.

Below 2.50m: wet.

Soft, light grey mottled black, sandy CLAY with partially decaying plant material, sand pockets and strong organic odour.


1

2

3

4

5

6

Wat

er

2.00 D22.00 ES1

3.00 D43.00 ES3

3.50 ES53.60 B6


41932 19/10/2016 ST HH DRAFT

Trial Pit ID:

TP07C

Sheet 1 of 1


359267.5Northing:


11.09mODPlant Used:


21/11/2016Scale:

1:40

Weather: Hole Termination: Stability: Trial pit remained dry during excavation.Major spalling of trial pit sides between 2.50m and 3.60m.


◄––––––––– Length (m) –––––––––►2.80m

––––

–►W

idth

(m)

◄––

–––

0.70

m Orientation: °

◄–––––––––––––––



2.50 0 0.00 Wet below 2.50m.



Level

10.79

8.99

8.59

7.69


(0.50)

0.50

(1.80)

2.30

(0.40)

2.70

(0.90)

3.60

Legend Strata DescriptionGrass over, brown, slightly clayey, fine and medium SAND with frequent rootlets.

Soft, brown, friable, sandy CLAY with occasional pockets of brown, fine and medium sand.

Black, clayey, fine and medium SAND.

Soft, black, sandy CLAY with occasional partially decaying plant material and slight organic odour.


1

2

3

4

5

6

Wat

er

2.40 D22.40 ES1

3.50 D43.50 ES3


41932 19/10/2016 ST HH DRAFT

Trial Pit ID:

TP07D

Sheet 1 of 1


359292.8Northing:


11.29mODPlant Used:


21/11/2016Scale:

1:40



◄––––––––– Length (m) –––––––––►2.70m

––––

–►W

idth

(m)

◄––

–––

0.65

m Orientation: °

◄–––––––––––––––





Level

10.07

9.47

7.97


(0.40)

0.40

(0.60)

1.00

(1.50)

2.50

Legend Strata DescriptionGrass over, soft, dark brown, slightly sandy CLAY with frequent rootlets (Topsoil).

Firm, brown mottled reddish brown, slightly sandy, silty CLAY.

Very soft, grey, silty CLAY.


1

2

3

4

5

6

Wat

er

1.50 D21.50 ES1

2.50 D42.50 ES3


41932 19/10/2016 CL HH DRAFT

Trial Pit ID:

TP08A

Sheet 1 of 1


359211.5Northing:


10.47mODPlant Used:


21/11/2016Scale:

1:40

Weather: Hole Termination: Stability: Trial pit remained dry with major spalling of trial pit sides between 2.00m and 3.50m during excavation.


◄––––––––– Length (m) –––––––––►2.30m

––––

–►W

idth

(m)

◄––

–––

0.70

m Orientation: °

◄–––––––––––––––





Level

10.51

9.21

7.41


(0.40)

0.40

(1.30)

1.70

(1.80)

3.50

Legend Strata DescriptionGrass over , brown, silty CLAY.

Firm, brown, laminated CLAY with silt laminations.

Dark, grey, slightly clayey, silty SAND with occasional rootlets. Strong organic odour noted.


1

2

3

4

5

6

Wat

er

0.30 D20.30 ES1

2.00 B3

3.00 D53.00 ES4


41932 20/10/2016 CL HH DRAFT

Trial Pit ID:

TP08B

Sheet 1 of 1


359231.9Northing:


10.91mODPlant Used:


21/11/2016Scale:

1:40

Weather: Hole Termination: Stability: Trial pit remained dry during excavation. Major spalling of trial pit sides between 0.00m and 2.00m.


◄––––––––– Length (m) –––––––––►2.10m

––––

–►W

idth

(m)

◄––

–––

0.80

m Orientation: °

◄–––––––––––––––





Level

11.55

10.80

9.70

8.30


0.25

(0.75)

1.00

(1.10)

2.10

(1.40)

3.50

Legend Strata DescriptionGrass over, brown, slightly clayey, fine and medium SAND with frequent roots and rootlets (Topsoil).Brown, fine and medium SAND.

Soft, friable, brown, sandy CLAY with occasional pockets of brown, fine and medium sand.

Soft, light grey mottled black, sandy, organic CLAY with partially decaying plant material and strong organic odour.

Below 3.00m: unstable with frequent collapses.


1

2

3

4

5

6

Wat

er

0.50 D20.50 ES1

1.10 D41.10 ES3

2.50 B5


41932 19/10/2016 ST HH DRAFT

Trial Pit ID:

TP08D

Sheet 1 of 1


359279.5Northing:


11.80mODPlant Used:


21/11/2016Scale:

1:40

Weather: Hole Termination: Stability: Trial pit remained dry during excavation.Major spalling of trial pit sides below 3.00m.


◄––––––––– Length (m) –––––––––►2.60m

––––

–►W

idth

(m)

◄––

–––

0.70

m Orientation: °

◄–––––––––––––––





Level

10.90

10.20

8.30


(0.40)

0.40

(0.70)

1.10

(1.90)

3.00

Legend Strata DescriptionVegetation over brown, clayey SAND (Topsoil).

Soft, brown, laminated CLAY with sand lenses.

Soft, dark grey, sandy, silty CLAY.


1

2

3

4

5

6

Wat

er

1.00 D21.00 ES1

2.00 B3

3.00 D53.00 ES4


41932 20/10/2016 CL HH DRAFT

Trial Pit ID:

TP09A

Sheet 1 of 1


359193.9Northing:


11.30mODPlant Used:


21/11/2016Scale:

1:40



◄––––––––– Length (m) –––––––––►2.60m

––––

–►W

idth

(m)

◄––

–––

0.80

m Orientation: °

◄–––––––––––––––





Level

11.00

9.90

7.40


(0.40)

0.40

(1.10)

1.50

(2.50)

4.00

Legend Strata DescriptionVegetation over, brown, slightly clayey, silty, fine and medium SAND with frequent rootlets (Topsoil).

Brown, mottled reddish brown, fine and medium SAND with clay bands.

Grey, organic SILT with slight organic odour.


1

2

3

4

5

6

Wat

er

0.20 D10.20 ES2

0.50 D30.50 ES4


41932 20/10/2016 CL HH DRAFT

Trial Pit ID:

TP09B

Sheet 1 of 1


359216.2Northing:


11.40mODPlant Used:


21/11/2016Scale:

1:40

Weather: Hole Termination: Stability: Major spalling of trial pit sides between 2.00m and 4.00m.


◄––––––––– Length (m) –––––––––►2.10m

––––

–►W

idth

(m)

◄––

–––

0.70

m Orientation: °

◄–––––––––––––––



2.00 0 0.00 seepage



Level

11.13

9.93

8.43


(0.30)0.30

(1.20)

1.50

(1.50)

3.00

Legend Strata DescriptionGrass over, brown, slightly clayey, medium and coarse SAND with frequent rootlets (Topsoil).

Brown, sandy, slightly clayey SILT with some rootlets.

Dark grey, silty, fine to coarse SAND.


1

2

3

4

5

6

Wat

er

1.00 D11.00 ES2

2.00 D32.00 ES4


41932 20/10/2016 CL HH DRAFT

Trial Pit ID:

TP09C

Sheet 1 of 1


359241.0Northing:


11.43mODPlant Used:


21/11/2016Scale:

1:40



◄––––––––– Length (m) –––––––––►2.50m

––––

–►W

idth

(m)

◄––

–––

0.30

m Orientation: °

◄–––––––––––––––



2.50 0 0.00 seepage



Level

10.95

9.95

8.35


(0.40)

0.40

(1.00)

1.40

(1.60)

3.00

Legend Strata DescriptionVegetation over, brown, clayey, fine and medium SAND with occasional rootlets (Topsoil).

Light brown, slightly clayey, silty, fine and medium SAND with silt bands.

Soft, dark grey, sandy, clayey SILT.


1

2

3

4

5

6

Wat

er

0.50 D20.50 ES1

1.50 D41.50 ES3

2.00 B5


41932 20/10/2016 CL HH DRAFT

Trial Pit ID:

TP10B

Sheet 1 of 1


359208.9Northing:


11.35mODPlant Used:


21/11/2016Scale:

1:40

Weather: Hole Termination: Stability: Trial pit remained dry with major spaling of trial pit sides between 1.50m to 3.00m during excavation


◄––––––––– Length (m) –––––––––►3.00m

––––

–►W

idth

(m)

◄––

–––

0.70

m Orientation: °

◄–––––––––––––––





Level

10.94

9.24

7.64


(0.30)0.30

(1.70)

2.00

(1.60)

3.60

Legend Strata DescriptionVegetation over, brown, clayey, fine and medium SAND with rootlets (Topsoil).

Soft, brown, friable, sandy, silty CLAY with silt and sand lenses.

Dark grey, clayey, silty, fine to coarse SAND.


1

2

3

4

5

6

Wat

er

0.30 D10.30 ES2

1.50 D31.50 ES4


41932 20/10/2016 MH HH DRAFT

Trial Pit ID:

TP10C

Sheet 1 of 1


359229.0Northing:


11.24mODPlant Used:


21/11/2016Scale:

1:40

Weather: Hole Termination: Stability: Major spalling of trail pit sides during excavation between 1.50m and 3.60m.


◄––––––––– Length (m) –––––––––►2.00m

––––

–►W

idth

(m)

◄––

–––

0.70

m Orientation: °

◄–––––––––––––––



3.00 0 0.00 seepage.



Level

11.02

10.32

7.82


(0.30)0.30

(0.70)

1.00

(2.50)

3.50

Legend Strata DescriptionVegetation over, brown, clayey, fine to coarse SAND with rootlets (Topsoil).

Light brown, clayey, silty, fine and medium SAND with clay laminations and rootlets.

Dark grey, clayey, silty SAND.


1

2

3

4

5

6

Wat

er

0.20 D40.20 ES3

2.50 D22.50 ES1


41932 20/10/2016 CL HH DRAFT

Trial Pit ID:

TP10D

Sheet 1 of 1


359250.1Northing:


11.32mODPlant Used:


21/11/2016Scale:

1:40

Weather: Hole Termination: Stability: Major spalling of trial pit sides during excavation between 1.50m and 3.50m.


◄––––––––– Length (m) –––––––––►2.10m

––––

–►W

idth

(m)

◄––

–––

0.60

m Orientation: °

◄–––––––––––––––



3.50 0 0.00 seepage



Level

10.58

9.38

7.98


(0.50)

0.50

(1.20)

1.70

(1.40)

3.10

Legend Strata DescriptionVegetation over, soft brown, sandy CLAY with frequent roots and rootlets (Topsoil).

Light brown, silty, fine and medium SAND with extremely fine clay laminations and rootlets.

Soft, grey, sandy, silty CLAY with slight organic odour.


1

2

3

4

5

6

Wat

er

0.30 D40.30 ES3

3.00 D23.00 ES1


41932 21/10/2016 CL HH DRAFT

Trial Pit ID:

TP11A

Sheet 1 of 1


359163.5Northing:


11.08mODPlant Used:


21/11/2016Scale:

1:40

Weather: Hole Termination: Stability: Trial pit remained dry with major spalling of trial pit sides between 2.00m and 3.00 during excavation.


◄––––––––– Length (m) –––––––––►3.40m

––––

–►W

idth

(m)

◄––

–––

0.60

m Orientation: °

◄–––––––––––––––





Level

10.67

9.67

7.97


(0.50)

0.50

(1.00)

1.50

(1.70)

3.20

Legend Strata DescriptionVegetation over, soft brown, sandy CLAY with sand laminations and frequent rootlets (Topsoil).

Firm, light brown, friable, sandy, silty CLAY with dessicated roots.

Very soft, dark grey mottled, silty, sandy, organic CLAY with organic odour.


1

2

3

4

5

6

Wat

er

1.00 D11.00 ES2

1.50 B3

2.50 D42.50 ES5


41932 21/10/2016 CL HH DRAFT

Trial Pit ID:

TP11C

Sheet 1 of 1


359206.9Northing:


11.17mODPlant Used:


21/11/2016Scale:

1:40



◄––––––––– Length (m) –––––––––►3.20m

––––

–►W

idth

(m)

◄––

–––

0.64

m Orientation: °

◄–––––––––––––––



2.20 0 0.00



Level

10.78

9.38

8.28


(0.50)

0.50

(1.40)

1.90

(1.10)

3.00

Legend Strata DescriptionVegetation over brown, slightly clayey, fine and medium SAND with frequent rootlets (Topsoil).

Light brown, silty, fine and medium SAND with clay laminations.

Grey, sandy, organic SILT with strong organic odour.


1

2

3

4

5

6

Wat

er

2.00 D12.00 ES2

3.00 D3


41932 21/10/2016 CL HH DRAFT

Trial Pit ID:

TP11D

Sheet 1 of 1


359228.7Northing:


11.28mODPlant Used:


21/11/2016Scale:

1:40



◄––––––––– Length (m) –––––––––►2.90m

––––

–►W

idth

(m)

◄––

–––

0.65

m Orientation: °

◄–––––––––––––––





Level

10.63

9.53

7.73


(0.50)

0.50

(1.10)

1.60

(1.80)

3.40

Legend Strata DescriptionVegetation over, soft, brown, slightly sandy CLAY with frequent rootlets (Topsoil).

Light brown, silty, fine and medium SAND with silt laminations and occasional rootlets.

Dark grey, silty, fine and medium SAND with slight organic odour.


1

2

3

4

5

6

Wat

er

1.00 D11.00 ES2

1.50 B3

2.50 D42.50 ES5


41932 21/10/2016 CL HH DRAFT

Trial Pit ID:

TP12A

Sheet 1 of 1


359148.3Northing:


11.13mODPlant Used:


21/11/2016Scale:

1:40



◄––––––––– Length (m) –––––––––►3.10m

––––

–►W

idth

(m)

◄––

–––

0.65

m Orientation: °

◄–––––––––––––––





Level

10.74

9.64

7.84


(0.40)

0.40

(1.10)

1.50

(1.80)

3.30

Legend Strata DescriptionVegetation over brown soft sandy CLAY with rootlets (Topsoil).

Light, brown, silty, fine and medium SAND.

Grey, sandy SILT.

Below 3.20m: light grey.


1

2

3

4

5

6

Wat

er

0.20 D10.20 ES2

2.00 D32.00 ES4


41932 21/10/2016 CL HH DRAFT

Trial Pit ID:

TP12B

Sheet 1 of 1


359172.6Northing:


11.14mODPlant Used:


21/11/2016Scale:

1:40



◄––––––––– Length (m) –––––––––►2.70m

––––

–►W

idth

(m)

◄––

–––

0.80

m Orientation: °

◄–––––––––––––––





Level

10.78

9.98

9.38

8.68


(0.40)

0.40

(0.80)

1.20

(0.60)

1.80

(0.70)

2.50

Legend Strata DescriptionVegetation over soft brown, sandy CLAY with frequent rootlets (Topsoil).

Light, brown, silty, fine and medium SAND with silt laminations and red rootlets.

Dark grey, silty, fine and medium SAND.

Soft, grey, dark grey mottled, sandy, silty CLAY.


1

2

3

4

5

6

Wat

er

0.20 D10.20 ES2

2.00 D32.00 ES4


41932 21/10/2016 CL HH DRAFT

Trial Pit ID:

TP12D

Sheet 1 of 1


359216.2Northing:


11.18mODPlant Used:


21/11/2016Scale:

1:40



◄––––––––– Length (m) –––––––––►2.70m

––––

–►W

idth

(m)

◄––

–––

0.60

m Orientation: °

◄–––––––––––––––

Trial pit remained dry during excavation. Major spalling of trial pit sides between 2.00m and 2.50m.



Arpley Meadows

Trial Pit Photographs

TP01B

Contract No. 41932

Arpley Meadows


TP01C

Contract No. 41932

Arpley Meadows


TP01D

Contract No. 41932

Arpley Meadows


TP02A

Contract No. 41932

Arpley Meadows


TP02B

Contract No. 41932

Arpley Meadows


TP03A

Contract No. 41932

Arpley Meadows


TP03B

Contract No. 41932

Arpley Meadows


TP04A

Contract No. 41932

Arpley Meadows


TP04B

Contract No. 41932

Arpley Meadows


TP05A

Contract No. 41932

Arpley Meadows


TP05B

Contract No. 41932

arpley meadows, warrington · arpley meadows, warrington contract no. 41932 page 12 of 21 6.5.4 in...

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