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Unit 13, Triangle Business Park
Wendover Road, Stoke Mandeville
Bucks HP22 5BL
Tel. 01296 739400
Fax. 01296 739401
e-mail: [email protected]
www.subadra.com
ENVIRONMENTAL INVESTIGATION REPORT
BP Air Fuel Storage Area
London City Airport, Royal Dock, London
Report No: BPA08017 CL 002a
January 2011
Client: BP International Ltd (Air BP branch)
Report Prepared By:
Report Reviewed By:
James Edley
Nicky Bowden
Subadra Consulting Ltd Registered in England No.4586038.
Registered at Unit 13 Triangle Business Park, Wendover Road, Stoke Mandeville, HP22 5BL
BPA08017 CL 002a
Page 2
Environmental Investigation Report – BP Air Fuel Storage Area, London City Airport, Royal Dock,
London
Contents
1
INTRODUCTION ................................................................................................................. 3
1.1
1.2
2
3
4
5
The Purpose of This Assessment ............................................................................... 3
The Scope of This Assessment.................................................................................. 3
SITE DETAILS .................................................................................................................... 3
2.1
2.2
Site Location and Description .................................................................................... 3
Previous Reports Relating to the Site ......................................................................... 4
2.3
Previous Work .......................................................................................................... 4
ENVIRONMENTAL REVIEW OF SITE SENS ITIVITY ............................................................. 4
3.1
Geology ................................................................................................................... 5
3.2
3.3
3.4
Hydrogeology ........................................................................................................... 6
Hydrology ................................................................................................................. 7
Site History ............................................................................................................... 7
3.5
3.6
Regulatory Comment ................................................................................................ 8
Desk study Summary ................................................................................................ 9
RESULTS OF OUR INVESTIGATION................................................................................... 9
4.1
4.2
4.3
Buried Utilities........................................................................................................... 9
Site Walkover and Environmental Inspection of Fuel Storage Depot ............................. 10
Borehole Investigation ............................................................................................... 11
4.4
Chemical Analysis Results......................................................................................... 14
ENVIRONMENTAL ASSESSMENT ...................................................................................... 17
5.1
Contaminants in Soil and Groundwater....................................................................... 17
5.2
Summary of Assessment Results............................................................................... 17
List of Attachments
Attachment One:
Notice to Interested Parties
Attachment Two:
Borehole Logs
Attachment Three:
Chemical Analysis Certificates
BPA08017 CL 002a
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1
Introduction
1.1
The Purpose of This Assessment
The site is located on Camel Road, off Connaught Road, at London City Airport in the East London
Royal Dock area. The site comprises a fuel storage depot that supplies London City Airport
operations.
We have been commissioned by BP International Ltd (Air BP branch) to carry out an intrusive
borehole investigation at the site. The purpose of the assessment is to determine whether the quality
of soil and/or groundwater underlying the site has been impacted with pollutants associated with
current or past operations being carried out at the fuel depot.
All the activities comprising this assessment were carried out in accordance with the procedures set
out in our Quality Manual. Your attention is drawn to the Notice to Interested Parties included as
Attachment One.
1.2
The Scope of This Assessment
Our assessment of the site was carried out in the following parts:
Ø
Environmental desk study comprising a review of information readily available in the public domain
and any previous environmental reports that relate to the site;
Ø
Review of public utility drawings and survey of below ground services at the site;
Ø
A walkover survey to identify visual signs of pollution or potentially polluting activities;
Ø
An intrusive soil investigation comprising five boreholes and two hand-dug inspection pits;
Ø
A return visit to carry out groundwater monitoring and sampling;
Ø
Chemical analysis of representative soil, water and product samples collected during the course of
our investigation;
Ø
Assessment of investigation data and provision of recommendations relating to future
environmental works.
The Client specified the scope of works.
2
Site Details
2.1
Site Location and Description
2.1.1
Site Location and Setting
The site occupies approximately 0.17ha and is located at National Grid Reference 541900 180365 at
approximately 5m above Ordnance Datum. The site has a shallow surface gradient falling towards the
south (site access gate). The site is situated on Camel Road, off Connaught Road, at the western end
of the London City Airport complex within the Royal Dock area of east London. A map showing the
site’s locality is shown below as Figure One (overleaf).
Direction
Distance
Surrounding Land Uses
North
<5m
London City Airport – stands for aeroplanes / parking for vehicles
East/West
<5m
Area used as car parking
South
<5m
Camel Road and Docklands Light Railway (viaduct)
South-east
60m
Commercial building (unknown use) and residential housing (70m)
South-west
40m
Frozen food distribution depot
Table One: Site Location and Description
BPA08017 CL 002a
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Victoria Dock
Site Location
River Thames
Figure One: Site Location Plan
2.1.2
Site Description
The site comprises four fuel storage tanks in a central bund structure, tanker off-loading facilities,
filters and pumps associated with a fuel supply line that feeds the airside loading gantries and a
portacabin style office/welfare block raised from the ground by a steel frame. Aviation fuel is delivered
to the site via road tanker.
A more detailed description, with supporting photos, is presented in Section 4.2 of this report that
details the results of our walkover survey.
2.2
Previous Reports Relating to the Site
2.3
Previous Work
As part of our environmental assessment we have reviewed the following reports:
Ø
Assessment of Environmental Impact at UK Aviation Terminals, September 1993 – Completed by
Land Restoration Systems on behalf of Air BP, (London City section of report / no report
reference available).
Ø
London City Airport Environmental Compliance Audit, September 2007 – Completed by Wardell
Armstrong LLP on behalf of Air BP, (Report no.CA10014.006).
A summary of the information contained within these reports in included in Section 3.4.1.
3
Environmental Review of Site Sensitivity
This section of our report describes the results of our review of readily available information for the
site. We have used this information to identify potential contaminant sources and sensitive receptors.
BPA08017 CL 002a
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3.1
Geology
3.1.1
British Geological Society Maps
We have assessed the geology of the site’s locality from available BGS maps and memoirs. These
show the geology to comprise (in succession, from the surface downward):
Unit I:
Alluvium – Normally soft to firm consolidated, compressible silty clay, but can contain layers of
silt, sand, peat and basal gravel. A stronger, desiccated surface zone may be present. The
estimated thickness of this unit under the site is between 5 and 10m.
Unit II: Lambeth Group – Variable: the component formations are Reading Formation (dominantly
clay with sand beds) and Woolwich Formation (largely grey to grey-brown, interlaminated finegrained sands, silts and clays).
Due to the site’s location, directly adjacent to London’s dockland area, is likely to have been in use
since pre-1900s as commercial offices, warehousing or light industry purposes. As such made ground
or building foundations may be present beneath the site.
Anecdotal information from previous maintenance/construction works at the site suggests that a ‘thick
slab’ of reinforced concrete (~200 – 300mm?), that formed the foundations for a former industrial unit,
is present beneath the site. However, conflicting information contained within the Wardell Armstrong
environmental audit report also suggests that 1m of surface soils has previously been removed from
the site as part of remedial works carried out during the construction of the depot.
The site also lies close to the boundary between the Lambeth Group and a region of Thanet Sand,
described as being a nodular flint at base, overlain by pale yellow-brown, fine-grained sand that can
be clayey and glauconitic.
3.1.2
British Geological Society Archive Borehole Records
We have reviewed available borehole records, held by the BGS, for the site and the surrounding
location. We identified records for several boreholes located within 100m of the site; a summary of the
geology recorded within this log is summarised in the table below.
BGS
Borehole
Reference
TQ48SW514
TQ48SW260
Location /
Surface
Elevation
(mAOD)
541930,
180240 /
1.69m
541970,
180290 /
Elevation not
specified
Distance and
Direction from
Site
90m - SE
90m - E
Depth (m)
Geology
from
to
Soil Description
0.0.
0.49
Hardstanding and Made Ground
0.49
2.3
Grey brown silty clay
2.3
4.7
Dark brown peat
4.7
13.8
Grey brown sandy gravel
13.8
25.0
Grey slightly silty fine sand
0.0
0.6
0.6
5.5
Blue clayey silt with organic matter
5.5
13.1
Gravel and sand
13.1
13.7
Sand
Table Two: Historical Borehole Records for Area Surrounding Site (continued overleaf)
BPA08017 CL 002a
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Continued from previous page…
BGS
Borehole
Reference
Location /
Surface
Elevation
(mAOD)
541900,
180300 /
2.00m
TQ48SW513
541889,
180239 /
2.18m
TQ48SW920
541860,
180300 /
3.10m
TQ48SW79
541845,
180327 /
2.50m
TQ48SW185
4
Distance and
Direction from
Site
25m - SE
75m - S
15m - S
5m - W
Depth (m)
Geology
from
to
Soil Description
0.0
0.6
0.6
3.2
3.2
4.7
Dark brown peat
4.7
5.4
Grey brown silty fine sand
5.4
14.8
Grey brown very sandy gravel
14.8
25
Grey brown slightly silty sand
0.0
0.8
0.8
2.8
Brown / blue grey clay
2.8
4.8
Dark brown clayey peat
4.8
5.7
Brown clayey fine sand
5.7
11.8
Brown coarse sand with gravels
11.8
17.0
Brown coarse sand
0.0
1.2
1.2
3.6
Brown clay
3.6
4.9
Peat
4.9
5.8
Green sand
5.8
17.6
Sand and gravel
17.6
30.5
Running sand
0.0
1.4
1.4
3.8
3.8
5.3
Dark brown peat
5.3
15.1
Grey brown sandy gravel
15.1
32.2
Grey silty medium fine sand
32.2
37.7
Rubbly partially weathered chalk
with fragments of hard chalk / flints
Table Two: Historical Borehole Records for Area Surrounding Site
3.2
3.2.1
Hydrogeology
Groundwater Sensitivity and Source Protection Zones
The Environment Agency classifies the Alluvium as a Secondary Aquifer (undifferentiated). This is
used in cases where it has not been possible to attribute either category A or B to a rock type. In most
cases, this means that the layer in question has previously been designated as both minor and nonaquifer in different locations due to the variable characteristics of the rock type.
BPA08017 CL 002a
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The Environment Agency classifies the Lambeth Group as a Secondary Aquifer (Class A). These are
permeable layers capable of supporting water supplies at a local rather than strategic scale, and in
some cases forming an important source of base flow to rivers.
Based upon it’s classification we do not consider the Alluvium underlying the site to be overly sensitive
and, as such, it is not considered an environmental receptor. Provided it has a relatively high
proportion of clay and silt the Alluvium will impede the downward migration of any shallow
contaminants into the underlying, more sensitive, Secondary (A) Aquifer of the Lambeth Group.
The risk of dissolved contaminants migrating off-site via groundwater is likely to be significantly
reduced due to the anticipated low permeability of the shallow geology.
Groundwater flow beneath the site, within the Lambeth Group is likely to flow towards the south or
south-east towards the River Thames.
The Environment Agency defines Source Protection Zones around groundwater abstractions used for
public water supply. The Zones are defined by the estimated travel time of potential contaminants to
the abstractions and are therefore areas that may be considered to be particularly sensitive to
groundwater impact. The site does not lie within a currently defined Source Protection Zone.
3.3
Hydrology
3.3.1
Surface Water Features
The nearest surface water to the site is the Royal Albert Dock located 210m to the north of the site.
Other surface water features in the vicinity of the site include Victoria Dock (240m NW) and the River
Thames (450m S) that, although tidally influenced, flows in an easterly direction. Based upon the
anticipated low permeability of shallow soils we consider it unlikely that any of these features will be at
risk of impact from any pollutants that may be present beneath the site.
3.4
Site History
The site and surrounding area has had a long industrial past with the site area having been occupied,
since the late 1800s, by various docklands industry including a paint factory. London City Airport was
developed during the late 1980s/early 1990s and the site has been in its current use since this time.
Whilst we have not obtained a full set of historical maps as part of our current assessment we have
reviewed previous reports relating to the site that contain a detailed history review. This information is
included in Section 3.4.1 below.
3.4.1
Previous Environmental Reports
We have reviewed the following reports that relate to the subject site and provided a summary of the
report’s contents where appropriate.
Ø
Assessment of Environmental Impact at UK Aviation Terminals, September 1993 – Completed by
Land Restoration Systems on behalf of Air BP, (London City section of report / no report
reference available).
Ø
London City Airport Environmental Compliance Audit, September 2007 – Completed by Wardell
Armstrong LLP on behalf of Air BP, (Report no.CA10014.006).
Environmental Impact at UK Aviation Terminals, September 1993 (Land Restoration Systems)
This report includes a site description and environmental review including an assessment of geology,
hydrogeology, water abstractions and nearby surface water features. The findings of the report are
generally in-line with those presented within our current assessment.
The report also provides a relatively detailed historical review for the site and surrounding area, which
we have summarised overleaf:
1886
Composition works on-site. Surrounding area predominantly residential. Roads and rail lines
surrounded the site and the general area included a large amount of industrial activity
including: chemical works, iron works, engine works, India rubber works, varnish works, colour
works and some coal depots in the Royal Victoria Docks located ~1km to the east.
BPA08017 CL 002a
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1934
King George V Dock is shown and a railway runs past the site directly along its western
boundary. The majority of the industry in the locality is no longer present, although a two corn
mills are shown 1km to the west. A large number of ‘sheds’ (warehouses?) are shown along
either side of both the Royal Albert and Royal Victoria Docks.
1966
The site is still denoted as a ‘Works’. Extensive development of the area surrounding the site
is shown with operations including: mills, works, offices, depots, factories as well as areas of
residential housing.
1975
Little or no significant changes shown to the site or surrounding area.
1984
There some alterations to the road layouts in the area immediately surrounding the site. No
significant changes to site usage noted.
1991
The site is shown in its current configuration and London City Airport is present to the north.
The report also includes anecdotal information regarding previous remedial works that are reported to
have been undertaken at the site as a result of contamination resulting from the site’s historical
industrial past. The report presents the following information:
Ø
1m of contaminated material was excavated prior to the development of the site as the fuel depot.
Ø
This contamination is reported to have come from a paint works.
Ø
An impermeable membrane was believed to have been installed at the base of the soil
excavation, and is present across the site at around 1.0m depth beneath current surface levels.
The report also identifies anecdotal information relating to a possible spill of fuel at the site. Fuel was
apparently ‘sprayed’ over a permeable gravel layer. No further details were provided.
Environmental Compliance Audit, September 2007 (Wardell Armstrong)
This report details the results of an environmental audit completed at the BP Air fuel storage depot
and associated air-side fuelling station at London City Airport.
The purpose of the audit was to identify non-compliances with regard to environmental legislation. We
note that no intrusive investigation works were completed as part of the works undertaken by Wardell
Armstrong.
The Wardell Armstrong report again highlights the possibility that remedial works may have been
undertaken at the site in the past, suggesting the completion of previous environmental investigation
works.
3.4.2
Additional Information
As part of the pre-enabling works for our investigation we completed additional research into the
reported ‘remedial works’ that had been completed during the sites construction. We were concerned
that any proposed intrusive investigation works could damage the membrane reported to have been
installed at the site.
We requested clarification from the construction engineers who supervised the construction of the site.
It was confirmed that the soil excavation (‘remedial’) works were completed for geotechnical ground
improvement purposes. In order to provide a suitable founding layer for the fuel tanks, clay soils were
removed and replaced with granular material and compacted. A geotextile membrane was then placed
at the base of the excavation to prevent loss of the granular material into the underlying clay soils.
Soils excavated from the site were found to contain various contaminants relating to the previous site
uses and required waste classification and appropriate disposal.
3.5
3.5.1
Regulatory Comment
Landfill Sites
The Environment Agency records show that there are two small landfill sites located within 250m of
the site. These are located under the airport apron to the north of the site. The landfills are denoted as
being part of the old Royal Albert Dock and are therefore likely to be former docks that were in-filled
during the construction of the airport.
BPA08017 CL 002a
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The Environment Agency records classify the waste as ‘inert’, which is described as being ‘Waste
which remains largely unaltered once buried such as glass, concrete, bricks, tiles, soil and stones’.
Landfills can produce potentially hazardous ground gases including methane and carbon dioxide. It is
possible that these gases could migrate through shallow soils and accumulate surrounding and
possibly beneath the subject site posing a risk of explosion. However, in the absence of any
putrescible waste the risk of hazardous ground gas production is considered low and we therefore
consider the risk of impact from hazardous gas to be low and have not completed monitoring or
assessment for such gases.
3.5.2
Flood Risk
The Environment Agency classifies the site as being at ‘low’ risk of flooding. This is an area that is
unlikely to flood except in extreme conditions. The chance of flooding each year is 0.5% (1 in 200) or
less. This takes into account the effect of any flood defences that may be in this area, whether or not
these are currently illustrated on the Flood Map. Flood defences reduce but do not completely remove
the likelihood of flooding and can be over topped or fail in extreme weather conditions.
3.6
Desk study Summary
3.6.1
Potential Contaminants
Ø
The primary potential contaminant that may be present beneath the site is aviation kerosene (Jet A1).
Ø
A range of other inorganic and organic contaminants may also be present, as a result of previous
site uses, although we have been unable to obtain a detailed description of former uses.
3.6.2
At-risk Receptors
Ø
We have not identified any environmental receptors associated with the site. This conclusion is
based upon the assumption that shallow soils have relatively high clay content and are therefore
impermeable in nature, mitigating the risk of off-site migration of liquid or dissolved phase
contaminants.
Ø
The primary pathway for volatile contaminants to impact site employees is via a build up of
potentially harmful vapours in site buildings. In this instance, however, the site office/welfare
building is raised from the ground via a metal frame. The void between the ground and the
building will act to ventilate any volatile gases and significantly reduce the risk of these gases
entering the building. We therefore consider the risk of impact from any volatile contaminants in
shallow soils to site employees to be low to negligible.
Site users may also be at-risk from direct contact with contaminants in soil or shallow
groundwater, either by ingestion or dermal contact. The site is predominantly covered by
hardstanding which will act as a barrier between any contaminants below ground and site
employees. We therefore do not consider this pathway to be viable.
4
Results of our Investigation
4.1
4.1.1
Buried Utilities
Public Utility Drawings
Prior to commencing works we obtained public utility drawings from the relevant providers. These
drawings were reviewed in order to assist in our identification of on-site below ground services.
4.1.2
Site Survey
We carried out a survey of utilities buried underneath the site on the day of our investigation. Our
survey was suitable for identifying power cables, metallic fuel pipe work, surface water and foul water
drainage. The technique that we used is unable to detect any plastic pipe work or fibre optic cabling
that might be present.
BPA08017 CL 002a
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We also completed a review of identified below services with site personnel, prior to commencing
drilling, to verify the results of our survey. The results of our survey were used to determine safe
drilling locations during the course of our intrusive investigation.
4.2
Site Walkover and Environmental Inspection of Fuel Storage Depot
th
We carried out a site inspection on the day of our intrusive investigation, 25 November 2011.
The findings of our walkover and are summarised below and a site plan highlighting key features is
provided below.
Approximate route of
below ground fuel
pipes
Airport stands /
apron
Block paving
Fuel Pumping
Station
Above Ground Fuel
Tanks (bunded)
Car Parking
Car Parking
Site Office and
Welfare Buildings
Site Boundary: Fuel
Storage Depot
Block paving
Site Security Gate
(access to Camel
Road)
Figure Two: Aerial View of Fuel Storage Area (land-side)
4.2.1
Above Ground Tanks
Ø
Fuel storage facilities at the site comprise three 70,000 litre tanks and a single 500,000 litre tank.
Ø
All four tanks contain Aviation Kerosene or ‘Jet-A1’ that is pumped to the air-side fuel loading area
for re-supplying aircraft.
Ø
Tank contents for the three smaller tanks is measured via manual dip-stick and the larger tank has
a gauge, although this can also be measured manually using a dip-stick.
Ø
All four tanks are contained within a bunded area in the centre of the installation.
BPA08017 CL 002a
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Ø
Tanks are filled from road tankers, via above ground fill points located mid-way along the site
western boundary adjacent to the fuel pumping station.
Ø
We understand that deliveries are made during both the day and night.
4.2.2
Ø
Below Ground Tanks and Fuel Pipes
Fuel from the main tank farm is drawn to the pumping station via a set of below ground fuel lines,
as shown on Figure Two (below).
BP Air advised us that there are no below ground fuel tanks present at the site; we did not find any
evidence contrary to this during the course of our investigation.
4.2.3
Fuel Pumping Station and Associated Filtration/Testing Infrastructure
Ø
The fuel is pumped from the tanks, via a pumping station located in the north-western corner of
the site, to the air-side installation located approximately 50m to the north-west of the storage
area. From here fuel is dispensed to aeroplanes via tankers.
Ø
Samples of fuel are collected and tested for quality purposes; the testing station is located midway along the site’s western boundary.
At each stage of the process the fuel is filtered to remove suspended solids and water.
4.2.4
Ø
Office and Welfare Buildings
The office and welfare facilities at the site comprise a single portacabin type building located
towards the south-western corner of the site.
4.2.5
Site Drainage Measures
Ø
Surface water run-off is collected via a series of box gullies that run across the entire width of the
site (east to west) at either end of the bunded tank farm area.
Ø
Run-off from these gullies discharges off-site towards Camel Road via a single chambered
superceptor. We were unable to access the superceptor on the day of our investigation and were
therefore unable to complete an inspection.
Ø
Foul water from the welfare facilities runs along the southern boundary of the site, west to east
and discharges off-site in the direction of Camel Road.
4.3
4.3.1
Borehole Investigation
Description or Works Competed
th
We undertook an intrusive investigation of the site on 25 November 2011.
Prior to drilling, the block paving and underlying concrete hardstanding was broken out using a rotary
coring system powered by the drill rig.
We investigated the soil and groundwater quality at the site by constructing five boreholes using our
van-mounted GeoProbe direct-push drilling system. The boreholes were constructed to a maximum
depth of 5.0m and all five of the boreholes were completed as permanent groundwater monitoring
wells. We also constructed two hand-pits to a maximum depth of 1.2m, in order to augment our
investigation, in areas where vehicle access was not possible.
Representative soil samples were recovered from each borehole in sealed liners and logged onsite by
a suitably qualified technician. Samples were also recovered from each of the hand-pits constructed.
Sub-samples were preserved in glass jars and stored in cool boxes during transportation to the
laboratory for subsequent analysis.
th
We returned to the site on 6 December 2011 to carry out groundwater monitoring and sampling. We
obtained groundwater samples from each of the wells we installed and a sample of product (fuel) from
a single location (Borehole Two).
BPA08017 CL 002a
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4.3.2
Borehole Locations and Rationale
A summary of our borehole locations is provided in the following table and a site plan showing
borehole locations is presented as Figure Three, also below.
Borehole
Target / Rationale
Hand-pit
One
Two
Three
Four
Five
One
Two
Above ground fuel storage tanks
X
X
X
X
X
X
X
Below ground fuel pipe work
X
X
Fuel pumping station
X
X
X
X
X
X
X
X
X
Drainage superceptor
X
General site coverage
X
X
X
X
Historical reports of fuel being lost
to ground
Table Three: Borehole Locations
Pumping
Station
BH1
HP1
BH2
BH5
HP2
Tank Farm
BH3
BH4
Figure Three: Borehole Location Plan
Site Boundary
BPA08017 CL 002a
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4.3.3
Soil Stratigraphy
The following strata were identified by the investigation.
Layer Ia Hardstanding / concrete and Made Ground – Block paving with a sand base over a layer of
concrete (generally >0.5m in thickness) underlain by a layer of highly compacted sand,
gravel, concrete and brick fragments.
Layer Ib Made Ground (clay capping layer) – Soft orange brown slightly sandy clay.
Layer IIa Alluvium (clay) – Firm grey /dark grey clay, sandy in places.
Layer IIb Alluvium (peat) – Dark brown peat, sandy and clayey in parts with occasional wood
fragments.
We identified the presence of small pieces of geotextile membrane in two locations (BH3 and BH4),
present at depths of ~1.2m below surface, between clay capping layer and underlying (natural) Alluvial
clays. The membrane is consistent in depth and location with that described in previous environmental
reports (see Section 3.4.1). However, the membrane was dark brown in colour and made from a
loosely woven fabric, similar to sack cloth.
We consider that the pieces of geotextile membrane identified in our core samples to be consistent
with the reported geotextile placed at the base of the foundation excavations prior to the importation of
granular material that was then compacted to form the sites founding layer.
The distribution of these strata between boreholes is summarised on the following table and detailed
logs for each are included in Attachment Two.
Boreholes
One
Two
Three
Four
Five
Soil Layer
from
to
from
to
from
to
from
to
from
to
Layer Ia
0.0
1.4
0.0
1.4
0.0
1.3
0.0
1.2
0.0
1.0
Layer Ib
1.4
2.0
1.4
2.0
1.3
2.0
1.2
1.5
1.0
2.4
Layer IIa
2.0
5.0
2.0
4.0
2.0
4.1
1.5
3.9
2.4
3.9
Layer IIb
5.0
>5.5
4.0
>4.8
4.1
>4.5
3.9
>4.8
3.9
>4.8
Hand-pits
One
One
Soil Layer
from
from
from
from
Layer Ia
0.0
0.1
0.0
0.1
Layer Ib*
0.1
>0.9
0.1
>0.8
-
-
-
-
-
Layer IIa
Layer IIb
All dimensions in metres below ground level / * - Varied in composition from boreholes, see borehole logs for details.
Table Four: Intrusive Investigation - Soil Stratigraphy
4.3.4
Groundwater
We recorded an observable groundwater strike at only a single location: Borehole One at 1.4m below
ground level, resting upon the surface of the underlying clay soils. We did not observe groundwater
strike or a saturated zone in any of the remaining boreholes. However, we encountered groundwater
in all wells on the day of our return groundwater monitoring visit.
BPA08017 CL 002a
Page 14
London
Borehole
Groundwater Level
– Initial Strike
Groundwater Level
– At Rest (06/12/11)
Comments
One
1.4
1.00
Hydrocarbon sheen and odour
1.16
200mm hydrocarbon product recorded
1.19
-
1.02
-
1.25
-
Two
Three
Four
No observable strike
noted
Five
All dimensions in metres below ground level
Table Five: Groundwater Data
We note that the volume of groundwater within each of the wells was limited with purge volumes
ranging from 1.5 to 6.0 litres before the well installation became dry. Once purging had been
completed recharge within the wells, sufficient to allow the collection of samples, was relatively slow.
We consider that this indicates water within the wells is likely to comprise perched groundwater,
resting upon the surface of one of the clay layers. We do not consider the water present within the
wells represents a viable groundwater resource and it is unlikely to constitute a pathway for off-site
migration of mobile contaminants.
4.3.5
Observed Contamination
We recorded the following visual and/or olfactory signs of potential contamination during the course of
our investigation:
Ø
Hydrocarbon odours in soil samples collected from the upper Made Ground and clay layers in
Borehole One. Hydrocarbon sheen and odour was present on the water samples collected from
Borehole One.
Ø
Hydrocarbon product noted in core liners from Borehole Two. [Note: this indicates product is
present, but we were unable to determine an accurate strike depth for water/product layer].
Ø
Hydrocarbon odours in soil samples collected from Hand Pit One from 0.5-0.9m.
4.4
4.4.1
Chemical Analysis Results
Chemical Analysis results - Soil Samples
We have completed the following analysis on representative soil samples from the site:
Rationale
No of
samples
Total Petroleum Hydrocarbons reported
by carbon range
Representative of compounds present in
kerosene, petrol, diesel and lube oils
20
Total Petroleum Hydrocarbons – forensic
assessment
To assist in determining source and age
of compounds
1
Volatile Organic Compounds
(includes BTEX compounds)
petrol and paints/solvents often
associated with industrial processes
5
Polycyclic Aromatic Hydrocarbons
diesel and lube oil
5
Analysis
Table Six: Schedule of Analysis – Soil Samples
BPA08017 CL 002a
Page 15
London
The results of the analyses where we encountered detectable concentrations of compounds are
summarised below and analysis certificates included in Attachment Three.
Sampling
Location
Depth
(m)
BH1
Total Petroleum Hydrocarbons – Concentration (mg/kg)
>C8-C10
>C10-C12
>C12-C16
>C16-C21
>C21-C35
0.5
9.81
12.8
2.74
12.3
5.24
BH1
1.0
1,840
4,740
3.290
88.7
9.51
BH2
1.0
2,510
3,830
2,280
63.7
5.79
BH2
2.5
2.81
6.26
3.77
<0.5
<1.5
BH2
3.5
0.720
2.13
1.13
<0.5
<1.5
BH3
1.2
2.6
3.22
1.32
<0.5
<1.5
BH3
2.5
0.666
1.96
<0.5
<1
<1
BH4
1.5
<0.5
<0.5
<0.5
6.64
<2
HP1
0.9
0.652
2.62
0.821
0.802
<1.5
Note: * - Total Petroleum Hydrocarbons – forensic assessment completed.
Table Seven: TPH Analysis Results – Soil
Volatile Organic Compounds - Concentration (mg/kg)
Sampling
Location
Depth
(m)
Benzene
Toluene
Ethylbenzene
Xylenes
1,3,5Trimethylbenzene
BH1
1.0
<0.002
<0.005
<0.01
<0.02
4.875
6.18
BH1
2.0
<0.002
<0.005
<0.01
<0.02
<0.005
<0.005
BH2
1.0
<0.002
<0.005
2.6
17.47
14.859
>50
BH2
1.5
<0.002
<0.005
<0.01
<0.02
<0.005
0.017
BH3
1.2
0.005
0.007
<0.01
0.064
0.038
0.133
Table Eight: Volatile Organic Compound Analysis Results – Soil
Polycyclic Aromatic Hydrocarbons - Concentration (mg/kg)*
Sampling
Location
Depth
(m)
Naphthalene
Benzo(a)pyrene
Total PAHs
BH1
1.0
0.67
0.21
3.25
BH2
1.0
5.92
0.50
12.91
BH3
1.2
<0.1
<0.1
<1.6
Notes: * - See analysis certificate for full EPA16 speciated PAH data.
Table Nine: PAH Analysis Results – Soil
BPA08017 CL 002a
Page 16
London
4.4.2
Chemical Analysis Results – Groundwater Samples
We have completed the following analysis on representative groundwater samples from the site:
Rationale
No of
samples
kerosene, petrol, diesel and lube oils;
5
To assist in determining source and age of
product
1
Representative of compounds present in petrol
and solvents associated with industrial processes
4
Representative of compounds present in diesel
and lube oil;
2
Analysis
Total Petroleum Hydrocarbons
reported by carbon range
Total Petroleum Hydrocarbons –
Product analysis
Volatile Organic Compounds
(includes BTEX compounds)
Polycyclic Aromatic
Hydrocarbons
Table Ten: Schedule of Analysis – Groundwater Samples
The results of the analyses are summarised in the tables below.
Sampling
Location
BH1
Total Petroleum Hydrocarbons - Concentration (µg/l)
>C8-C10
>C10-C12
>C12-C16
>C16-C21
>C21-C35
508
816
84.5
<50
<50
Description: Dark brown oil
BH2 Product
analysis.
Carbon range: nC6 to nC18
o
o
Boiling point range: 69 C to 317 C
Analyst interpretation: weathered kerosene. Unable to complete pristine/phytane or
nC17/pristine ratio analysis as components not present.
BH3
<50
<50
<50
<50
<50
BH4
<50
<50
<50
<50
<50
BH5
<50
<50
<50
<50
<50
Table Eleven: TPH Analysis Results – Groundwater
Volatile Organic Compounds - Concentration (µg/l)
Sampling
Location
Benzene
Toluene
Ethylbenzene
Xylenes
BH1
<1
<1
3
48
25
26
BH2
4
122
234
766
584
424
Table Twelve: Volatile Organic Compound Analysis Results – Groundwater
BPA08017 CL 002a
Page 17
London
Polycyclic Aromatic Hydrocarbons - Concentration (µg/l)
Sampling
Location
Naphthalene
Benzo(a)pyrene
Total PAHs
BH1
18.40
<0.01
22.27
BH2
45.91
<0.01
48.59
Note: - See analysis certificate for full EPA16 speciated PAH data.
Table Thirteen: Selected PAH Analysis Results – Groundwater
Results of all the chemical analyses carried out as part of our assessment are included in Attachment
Three.
5
Environmental Assessment
5.1
Contaminants in Soil and Groundwater
The results of our investigation indicate that shallow soil and groundwater at the north-eastern end of
the depot has been impacted with kerosene range hydrocarbons. Product analysis indicates that the
encountered hydrocarbons are weathered.
5.2
Summary of Assessment Results
5.2.1
Environmental Receptors
The results of our desk-based study concluded that there are no potentially at-risk environmental
receptors associated with the site, primarily based upon the absence of a viable pathway for the offsite migration of contaminants.
Whilst our investigation has identified limited volumes of perched groundwater we do not consider this
represents a viable pathway for off-site migration of mobile contaminants and the conclusions of our
preliminary assessment stand.
5.2.2
Human Receptors
Whilst our investigation has identified hydrocarbon product within one of the on-site wells we consider
the risk to on-site employees to be negligible. As justification we provide the following comment:
Ø
The product is present beneath the block paving, sand layer and most likely a relatively thick
layer of concrete. This will reduce the risk of vapours migrating to outdoor air and hence reduce
the likelihood of exposure to employees working at the depot.
Ø
The volatility of the kerosene –range product we have identified is relatively low, which will further
reduce the potential for harmful concentrations of hydrocarbon vapours to accumulate.
Ø
The product is localised to the north-eastern end of the depot, at the opposite end from the office
and welfare block; this will reduce the potential for hydrocarbons vapours present in shallow soils
to migrate laterally and then upwards into the site buildings. The site buildings are also raised
from the ground, creating a ventilation zone that will further reduce the potential for hydrocarbon
vapours to enter.
Your attention is drawn to the Notice to Interested Parties included as Attachment One.
ATTACHMENT ONE: NOTICE TO INTERESTED PARTIES
BPA08017 CL 002
Attachment One
London
NOTICE TO INTERESTED PARTIES
The purpose of our site assessment is to provide general information on the environmental and/or
geotechnical conditions existing at the site and related to soil or groundwater. Where the Client or
others specified the scope of the investigation, the validity of our conclusions may be limited by the
scope of work completed. We are not responsible for any such limitations imposed by the scope of
work.
Where stated in this report, we have used information supplied by third parties. While we have
evaluated as far as possible the validity of this information, we cannot guarantee its accuracy in any
way whatsoever.
No investigation technique is capable of completely identifying all of the contaminants that might be
present in the soil or groundwater under a site. Where specified in our report, we have examined the
ground by constructing a number of boreholes and/or trial pits. We recovered samples of soil and/or
groundwater from available exposures.
The depth and spacing of our sampling locations were selected to ensure with a reasonable
probability that they would be representative of the actual conditions across the whole site. However,
safety considerations relating to existing site infrastructure may have restricted our ability to
investigate all potential contaminant sources. Specifically, we were unable to investigate the soil and
groundwater condition immediately adjacent to the underground petroleum installation and other
buried services. These limitations must be borne in mind when considering the conclusions reached in
this report.
Soil is intrinsically variable and the spread of contaminants within the soil is therefore subject to a
degree of non-uniformity. For these reasons no sampling technique can completely eliminate the
possibility of obtaining samples that are not representative of the actual conditions. Our sampling
techniques are intended to reduce the possibility to an acceptable level.
Groundwater levels and soil vapour levels that we report were accurate at the time of the investigation.
Groundwater and soil vapour levels are variable. Long term monitoring may be required to ensure that
the levels recorded during our investigation are representative of long term and possible ‘worst case’
conditions.
This investigation was carried out to assess the significance of contamination resulting from use of the
site as identified in this report. Unless we have indicated otherwise, no assessment of the potential
impact of any other previous uses has been made. No investigation was carried out to determine
whether or not any deleterious or hazardous materials have been used in the construction of the
buildings present on the site.
We do not accept any responsibility for the cost of remedial works or other costs incurred in whatever
way whatsoever as a result of any omissions, errors or other shortcomings in this report unless we
have been given reasonable opportunity to verify ourselves that such faults exist and we have been
given a reasonable opportunity to carry out works to remedy such faults ourselves using the most
practicable means available to us. We do not accept liability for any consequential losses incurred by
you while we carry out any remedial works we deem necessary.
This report has been prepared for BP International Ltd (Air BP branch). Use of, and reliance on, this
report by other third parties will be at such third parties own risk, and we are unable to accept any
liability or responsibility to third parties.
Neither the whole nor any part of this report, or any reference to it, may be included in any published
document circular or statement or published in any way without our prior written approval.
This report and its contents, together with any supporting correspondence or other documentation,
remain the property of Subadra Consulting Limited until paid for in full.
ATTACHMENT TWO: BOREHOLE LOGS
SUBADRA
Consultants in the Earth Sciences
Borehole No. One
___________________________________________________________________________
Unit 13, Triangle Business Park, Stoke Mandeville
Tel. 01296 739400 Fax. 01296 739401.
Date
25th November 2011
Project Code
BPA08017
Ground Level
Approximately 5m AOD
Coordinates
541900, 180365 (Site Centre)
Equipment
GeoProbe (Direct Push)
Monitoring
Well
Landside Fuel Depot (LCA)
Depth (m)
Project Name
Water
Level
Log
Chemical
Analysis
Scheduled
Sample
0
SPT ('N') or
Su (kPa)
Description
0.0 to 0.1m BLOCK PAVING
0.1 to 0.2m MADE GROUND
Sand base for block paving.
S1 @ 0.5m
1
Standing @ 1.00m (06/12)
S2 @ 1.0m
Strike @ 1.4m
2
TPH/MET
TPH/PAH/VOC
0.2 to 0.5m CONCRETE
Compacted brown/red/yellow SAND.
Crushed brick and concrete fragments
present. Hydrocarbon odour noted from
0.9 to 1.3m.
SOFT red/brown slightly sandy CLAY.
Possible clay capping layer.
S3 @ 2.0m
TPH/PAH/VOC/MET
S4 @ 2.4m
TPH
SOFT grey with black striations slightly
sandy CLAY. Sand lens noted from 2.0
to 2.1m.
2.4 to 3.6m NO DATA
Poor core recovery (due to wet sand),
unable to provide accurate log.
3
S5 @ 3.8m
3.6 to 5.0m ALLUVIUM
FIRM grey/black CLAY.
4
S6 @ 4.8m
5
Organic black sandy PEAT.
S7 @ 5.4m
Borehole terminated at: 5.0m
Hydrocarbon odour/staining: 0.9 to 1.3m
Groundwater monitoring well installed to: 4.0m
Dwn: JE
Groundwater encountered at: 1.4m
Ckd: JS
SUBADRA
Borehole No. Two
___________________________________________________________________________
Tel. 01296 739400 Fax. 01296 739401.
Date
25th November 2011
Project Code
BPA08017
Ground Level
Coordinates
541900, 180365 (Site Centre)
Equipment
Monitoring
Well
Depth (m)
Project Name
Water
Level
Log
Chemical
Analysis
Scheduled
Sample
SPT ('N') or
Su (kPa)
0
Description
2
Standing @ 1.16m (06/12)
1
S1 @ 1.0m
TPH/PAH/VOC
S2 @ 1.5m
TPH/PAH/VOC/MET
Highly compacted mixture of sand,
crushed brick and concrete. Becoming
less compacted >1.0m.
SOFT orange/brown slightly sandy
CLAY. Possble clay capping layer.
Soft becoming FIRM grey CLAY.
S3 @ 2.5m
TPH
S4 @ 3.5m
TPH
3
4
Dark brown slightly sandy clayey peat.
S5 @ 4.5m
5
Hydrocarbon odour/staining: Hydrocarbon product noted in core liners.
Dwn: JE
Groundwater encountered at: No observable strike
Ckd: JS
SUBADRA
Borehole No. Three
___________________________________________________________________________
Tel. 01296 739400 Fax. 01296 739401.
Date
25th November 2011
Project Code
BPA08017
Ground Level
Coordinates
541900, 180365 (Site Centre)
Equipment
Monitoring
Well
Depth (m)
Project Name
Water
Level
Log
Sample
Chemical
Analysis
Scheduled
0
SPT ('N') or
Su (kPa)
Description
(hardstanding cover layer)
1
2
Standing @ 1.19m (06/12)
S1 @ 1.2m
TPH/PAH/VOC
Highly compacted SAND and GRAVEL
with crushed concrete fragments
present.
SOFT orange/brown sandy CLAY with
concrete and red brick fragments.
CLAY. Possible clay capping layer (?).
S3 @ 2.5m
TPH
S2 @ 2.8m
TPH
FIRM grey/dark grey CLAY.
Slightly sandy in places.
3
S4 @ 3.5m
4
S5 @ 4.5m
Dark brown organic clayey PEAT.
Wood fragments present.
5
Hydrocarbon odour/staining: None
Dwn: JE
Groundwater encountered at: No observable strike.
Ckd: JS
SUBADRA
Borehole No. Four
___________________________________________________________________________
Tel. 01296 739400 Fax. 01296 739401.
Date
25th November 2011
Project Code
BPA08017
Ground Level
Coordinates
541900, 180365 (Site Centre)
Equipment
Monitoring
Well
Depth (m)
Project Name
Water
Level
Log
Sample
Chemical
Analysis
Scheduled
0
SPT ('N') or
Su (kPa)
Description
2
Standing @ 1.02m (06/12)
1
with crushed concrete fragments.
3
S1 @ 1.0m
TPH
S2 @ 1.5m
TPH
S3 @ 2.0m
TPH/MET
SOFT grey/brown clayey SAND.
Concrete and red brick fragments
present. Possible membrane at 1.2m.
CLAY. Possible clay capping layer.
FIRM dark grey CLAY, slightly sandy in
places.
S4 @ 3.0m
4
S5 @ 4.0m
SOFT dark brown sandy clayey PEAT.
S6 @ 4.8m
5
Dwn: JE
Ckd: JS
SUBADRA
Borehole No. Five
___________________________________________________________________________
Tel. 01296 739400 Fax. 01296 739401.
Date
25th November 2011
Project Code
BPA08017
Ground Level
Coordinates
541900, 180365 (Site Centre)
Equipment
Monitoring
Well
Depth (m)
Project Name
Water
Level
Log
Sample
Chemical
Analysis
Scheduled
0
SPT ('N') or
Su (kPa)
Description
with crushed concrete fragments.
2
Standing @ 0.1.25 (06/12)
1
S1 @ 1.0m
TPH
S2 @ 1.5m
TPH
S3 @ 2.5m
TPH
SOFT grey/brown/dark brown CLAY.
Possible capping layer.
FIRM grey CLAY.
3
S4 @ 3.5m
SOFT dark brown PEAT.
4
S6 @ 4.5m
5
Dwn: JE
Ckd: JS
SUBADRA
Borehole No. Hand Pit One
___________________________________________________________________________
Tel. 01296 739400 Fax. 01296 739401.
Date
25th November 2011
Project Code
BPA08017
Ground Level
Coordinates
541900, 180365 (Site Centre)
Equipment
Monitoring
Well
Depth (m)
Project Name
Water
Level
Log
Sample
Chemical
Analysis
Scheduled
0
S1 @ 0.3m
TPH/MET
S2 @ 0.6m
TPH
S3 @ 0.9m
TPH
SPT ('N') or
Su (kPa)
Description
Layer of large rounded gravels.
SOFT dark drown/brown CLAY, sandy
in places with frequent concrete and
brick fragments.
Hydrocarbon odour 0.5-1.0m.
1
2
3
4
5
Hydrocarbon odour/staining: 0.5 to 0.9m
Groundwater monitoring well installed to: None installed
Dwn: JE
Groundwater encountered at: None
Ckd: JS
SUBADRA
Borehole No. Hand Pit Two
___________________________________________________________________________
Tel. 01296 739400 Fax. 01296 739401.
Date
25th November 2011
Project Code
BPA08017
Ground Level
Coordinates
541900, 180365 (Site Centre)
Equipment
Monitoring
Well
Depth (m)
Project Name
Water
Level
Log
Sample
Chemical
Analysis
Scheduled
0
SPT ('N') or
Su (kPa)
Description
Layer of large rounded gravels.
S1 @ 0.5m
TPH
SOFT dark drown/brown CLAY, sandy
in places with frequent concrete and
brick fragments.
1
2
3
4
5
Groundwater monitoring well installed to: None installed
Dwn: JE
Groundwater encountered at: None
Ckd: JS
ATTACHMENT THREE: CHEMICAL ANALYSIS DATA
13 Triangle Business Park, Stoke
SUBADRA
Mandeville, HP22 5BL
Tel. 01296 739400 Fax. 01296 739401
www.subadra.com
Environmental-Geotechnical-Laboratory-Foundations
Laboratory Analysis Report
Report Number 003066
Sampling Date
Report Date
25th November 2011
06th December 2011
Client
Site Name/Address
BP International Ltd (Air BP Branch)
London City Airport
Air BP
Chertsey Road
Sunbury-on-Thames
Middlesex
TW16 7LL
London City Airport
Royal Docks
London
E16 2PX
Number of
Samples
Sample
Type
Analysis Completed
Blind
Testing
20
Soil
IH QM:E10 based on TNRCC 1005 by GC-FID
RT Corp
UKAS
MCERTS
Yes
No
QM E10: IH TPH Banded method C8 - C35 - Solvent (pentane) extraction then Liquid injection into GC-FID.
Samples prepared and analysed 30-11-11.
LOR for C>21-C35 has been raised for some samples due to blank contamination.
Sample BHL2/1 had low recovery of IS. Re-analysis not possible due to sample sent away for external lab
analysis. Results for BHL2/1 are therefore reported semi-quantitatively and should be taken as minimum
values.
Analysis Report Approved By
5,658
Katherine Clark
Duty Reporting Manager
Subadra Consulting Ltd Registered in England No 4586038
Registered Office : 13 Triangle Business Park, Stoke Mandeville, HP22 5BL
Laboratory Analysis Report Number 003066
Page 2 of 25
London City Airport
Glossary of Terms Used in This Report
Blank - A sample known to contain none of the compounds being analysed, and used to confirm that the
analytical instrument is not giving false positives during analysis.
Blind Testing: Name of any blind testing scheme participated in. The laboratory 's accuracy is reported as a Z
score; the lower the Z score the more accurate the analysis, with a score of less than 2 considered excellent.
CRM - Certified Reference Material. A sample prepared by an accredited source and containing a known
concentration of a given compound or compounds, which can be used to validate an analysis method.
Duplicate - A duplicate sample, used to give a measure of the repeatability of a given analysis.
External Calibration - External calibration samples are samples containing a known concentration of the
compounds being analysed. They are added to the analysis sequence after every nth sample being analysed and
provide confirmation that the instrument remains within its calibration range.
IRM - In house reference material. A sample prepared by our laboratory and containing a known concentration of
a given compound or compounds, which can be used to validate an analysis method.
Linearity - The linearity of a given analytical method is the range of concentrations between which the analytical
instrument’s response is directly proportional to the concentration being analysed, and hence the range of
concentrations that the instrument can be said to give quantitative results.
LOD - The lowest response for any given compound generated at the instrument 's detector, that can be
differentiated from the instrument's baseline noise.
LOQ - Limit of quantification. This is the lowest concentration that a given compound can be both detected and
its concentration accurately measured in a sample.
MCERTS - An accreditation scheme created by the Environment Agency for the analysis of soil samples used to
determine land quality. The scheme does not apply to analysis of soil samples used for waste classification
purposes or to the analysis of water samples.
Method Calibration - The means by which an analytical method is calibrated. Usually this involves analysing a
number of external calibration samples, containing different concentrations of the compounds to be analysed.
Precision - A measure of the repeatability of the analysis.
Sample - The material provided by the client to the laboratory for analysis.
Sensitivity - The smallest increment in analytical result that can be reliably quantified.
Spike - Also known as an internal calibration, a spike sample is a sample to be analysed which has a known
concentration of another compound added. This provides a check on that the compounds being analysed are
being correctly extracted from the sample matrix.
UKAS - The UK’s implementation of ISO17025, the international standard accreditation for laboratory analysis
SUBADRA
Page 3 of 25
London City Airport
Quality Control/Quality Assurance Information
TPH Banded - Soil
26.00
12
11
10
Measured Concentration
Our laboratory carries out a wide variety of
verification analyses in order to ensure the
validity of the analysis results we produce.
Samples are analysed in batches, usually
according to the sample chain of custody form
we receive. However, we also add additional
samples into the sample sequence. These
additional
samples
may
include
blanks,
calibration samples, in-house reference material
samples and duplicate samples.In addition to
this, each sample is 'spiked' with a known
concentration of a compound.In the case of this
analysis,
we
use
a
combination
of
2-fluorobiphenyl and 1-chlorooctadecane. The
results of the analyses we have carried out on
the additional quality assurance samples during
the ten days prior to the samples reported here
are shown in the accompanying graphs. Results
are reported in mg/kg for the C8-C10 band.
These provide a visual indication of the stability
of our laboratory analysis.
9
8
7
6
5
4
3
2
1
0
0
1
2
3
4
5
6
7
8
9 10 11 12
Actual Concentration
TPH Banded - Soil
Calibration Samples - Previous 10 days
Spike Samples - Previous 10 days
Reference Material - Previous 10 days
SUBADRA
Page 4 of 25
London City Airport
Summary of Results
TPH Banded - Soil
Accreditation
Results Reported As
UKAS
Blind Testing
Dry Weight
Last Three Z Scores
RT Corp
-1.19
-1.11
-0.55
TPH Banded - Soil
Analysis Method Parameters
mg/kg
Reporting Units
Linearity
2,000mg/kg
Sensitivity
Sample Location
Limit of Detection
0.05mg/kg
Limit of Quantification
0.1mg/kg
Precision
0.1mg/kg
Sample
Depth
BHL1/1
sBA08017.002001
0.50
9.81
BHL1/2
sBA08017.002002
1.00
1840
BHL1/3
sBA08017.002003
2.00
<0.5
BHL1/4
sBA08017.002004
2.40
BHL2/1
sBA08017.002005
1.00
BHL2/2
sBA08017.002006
1.50
BHL2/3
sBA08017.002007
BHL2/4
+/-0.1mg/kg
C8-C10
>C10-C12
>C12-C16
>C16-C21
>C21-C35
12.8
2.74
12.3
5.24
4740
3290
88.7
9.51
<0.5
<0.5
<0.5
<1.5
<0.5
<0.5
<0.5
<0.5
<1.5
2510
3830
2280
63.7
5.79
<0.5
<0.5
<0.5
<0.5
<1.5
2.50
2.81
6.26
3.77
<0.5
<1.5
sBA08017.002008
3.50
0.720
2.13
1.13
<0.5
<1.5
BHL3/1
sBA08017.002009
1.20
2.6
3.22
1.32
<0.5
<1.5
BHL3/2
sBA08017.002010
1.80
<0.5
<0.5
<0.5
<0.5
<1.5
BHL3/3
sBA08017.002011
2.50
0.666
1.96
<0.5
<1
<1
BHL4/1
sBA08017.002012
1.00
<0.5
<0.5
<0.5
<0.5
<1.5
BHL4/2
sBA08017.002013
1.50
<0.5
<0.5
<0.5
6.64
<2
BHL4/3
sBA08017.002014
2.00
<0.5
<0.5
<0.5
<0.5
<1.5
BHL5/1
sBA08017.002015
1.00
<0.5
<0.5
<0.5
<0.5
<1.5
BHL5/2
sBA08017.002016
1.50
<0.5
<0.5
<0.5
<0.5
<1.5
BHL5/3
sBA08017.002017
2.50
<0.5
<0.5
<0.5
<0.5
<1.5
HP1/1
sBA08017.002018
0.30
<0.5
<0.5
<0.5
<0.5
<2
HP1/3
sBA08017.002019
0.90
0.652
2.62
0.821
0.802
<1.5
HP2/1
sBA08017.002020
0.50
<0.5
<0.5
<0.5
<0.5
<1.5
SUBADRA
Page 5 of 25
London City Airport
TPH Banded - Soil
Individual Sample Results
TPH Banded - Soil
Sample Location
Results Reported As
BHL1/1
Sample
Dry Weight
sBA08017.002001
Reporting Units
mg/kg
Depth(m)
0.50
Date Received
30/11/2011
Chain of Custody No.
5,658
Date of Sampling
25/11/2011
Accreditation
UKAS
Date of Analysis
30/11/2011
Moisture Content
VES MES
WW
(g)
DW
(g)
MC
(%)
(ml)
(g)
32.19
30.13
15.52
10
10.18
CRF
BSV
Results
C8-C10
0.73
0.00
9.81
>C10- C12 >C12-C16
12.8
2.74
>C16-C21
>C21-C35
12.3
5.24
Note: WW denotes wet weight; DW denotes dry weight; MC denotes moisture content; CRF denotes calibration
recovery factor; BSV denotes blank subtraction value
Gas Chromatogram for Sample
SUBADRA
Page 6 of 25
London City Airport
TPH Banded - Soil
Sample Location
Results Reported As
BHL1/2
Sample
Dry Weight
sBA08017.002002
Reporting Units
mg/kg
Depth(m)
1.00
Date Received
30/11/2011
5,658
Date of Sampling
25/11/2011
Accreditation
UKAS
Date of Analysis
30/11/2011
Moisture Content
VES MES
WW
(g)
DW
(g)
MC
(%)
(ml)
(g)
32.37
29.42
24.16
10
10.14
CRF
BSV
Results
C8-C10
0.72
0.00
1840
>C10- C12 >C12-C16
4740
3290
>C16-C21
>C21-C35
88.7
9.51
SUBADRA
Page 7 of 25
London City Airport
TPH Banded - Soil
Sample Location
Results Reported As
BHL1/3
Sample
Dry Weight
sBA08017.002003
Reporting Units
mg/kg
Depth(m)
2.00
Date Received
30/11/2011
5,658
Date of Sampling
25/11/2011
Accreditation
UKAS
Date of Analysis
30/11/2011
Moisture Content
VES MES
WW
(g)
DW
(g)
MC
(%)
(ml)
(g)
42.11
38.76
27.99
10
10.09
CRF
BSV
Results
C8-C10
0.75
0.00
<0.5
>C10- C12 >C12-C16
<0.5
<0.5
>C16-C21
>C21-C35
<0.5
<1.5
SUBADRA
Page 8 of 25
London City Airport
TPH Banded - Soil
Sample Location
Results Reported As
BHL1/4
Sample
Dry Weight
sBA08017.002004
Reporting Units
mg/kg
Depth(m)
2.40
Date Received
30/11/2011
5,658
Date of Sampling
25/11/2011
Accreditation
UKAS
Date of Analysis
30/11/2011
Moisture Content
VES MES
WW
(g)
DW
(g)
MC
(%)
(ml)
(g)
41.88
37.66
39.07
10
10.38
CRF
BSV
Results
C8-C10
0.60
0.00
<0.5
>C10- C12 >C12-C16
<0.5
<0.5
>C16-C21
>C21-C35
<0.5
<1.5
SUBADRA
Page 9 of 25
London City Airport
TPH Banded - Soil
Sample Location
Results Reported As
BHL2/1
Sample
Dry Weight
sBA08017.002005
Reporting Units
mg/kg
Depth(m)
1.00
Date Received
30/11/2011
5,658
Date of Sampling
25/11/2011
Accreditation
UKAS
Date of Analysis
30/11/2011
Moisture Content
VES MES
WW
(g)
DW
(g)
MC
(%)
(ml)
(g)
32.35
30.16
17.00
10
10.18
CRF
BSV
Results
C8-C10
0.47
0.00
2510
>C10- C12 >C12-C16
3830
2280
>C16-C21
>C21-C35
63.7
5.79
SUBADRA
Page 10 of 25
London City Airport
TPH Banded - Soil
Sample Location
Results Reported As
BHL2/2
Sample
Dry Weight
sBA08017.002006
Reporting Units
mg/kg
Depth(m)
1.50
Date Received
30/11/2011
5,658
Date of Sampling
25/11/2011
Accreditation
UKAS
Date of Analysis
30/11/2011
Moisture Content
VES MES
WW
(g)
DW
(g)
MC
(%)
(ml)
(g)
32.54
28.90
30.77
10
10.04
CRF
BSV
Results
C8-C10
0.72
0.00
<0.5
>C10- C12 >C12-C16
<0.5
<0.5
>C16-C21
>C21-C35
<0.5
<1.5
SUBADRA
Page 11 of 25
London City Airport
TPH Banded - Soil
Sample Location
Results Reported As
BHL2/3
Sample
Dry Weight
sBA08017.002007
Reporting Units
mg/kg
Depth(m)
2.50
Date Received
30/11/2011
5,658
Date of Sampling
25/11/2011
Accreditation
UKAS
Date of Analysis
30/11/2011
Moisture Content
VES MES
WW
(g)
DW
(g)
MC
(%)
(ml)
(g)
42.23
37.36
46.47
10
10.25
CRF
BSV
Results
C8-C10
0.67
0.00
2.81
>C10- C12 >C12-C16
6.26
3.77
>C16-C21
>C21-C35
<0.5
<1.5
SUBADRA
Page 12 of 25
London City Airport
TPH Banded - Soil
Sample Location
Results Reported As
BHL2/4
Sample
Dry Weight
sBA08017.002008
Reporting Units
mg/kg
Depth(m)
3.50
Date Received
30/11/2011
5,658
Date of Sampling
25/11/2011
Accreditation
UKAS
Date of Analysis
30/11/2011
Moisture Content
VES MES
WW
(g)
DW
(g)
MC
(%)
(ml)
(g)
32.27
27.32
49.21
10
10.26
CRF
BSV
Results
C8-C10
0.70
0.00
0.720
>C10- C12 >C12-C16
2.13
1.13
>C16-C21
>C21-C35
<0.5
<1.5
SUBADRA
Page 13 of 25
London City Airport
TPH Banded - Soil
Sample Location
Results Reported As
BHL3/1
Sample
Dry Weight
sBA08017.002009
Reporting Units
mg/kg
Depth(m)
1.20
Date Received
30/11/2011
5,658
Date of Sampling
25/11/2011
Accreditation
UKAS
Date of Analysis
30/11/2011
Moisture Content
VES MES
WW
(g)
DW
(g)
MC
(%)
(ml)
(g)
42.08
38.41
31.10
10
10.29
CRF
BSV
Results
C8-C10
0.67
0.00
2.6
>C10- C12 >C12-C16
3.22
1.32
>C16-C21
>C21-C35
<0.5
<1.5
SUBADRA
Page 14 of 25
London City Airport
TPH Banded - Soil
Sample Location
Results Reported As
BHL3/2
Sample
Dry Weight
sBA08017.002010
Reporting Units
mg/kg
Depth(m)
1.80
Date Received
30/11/2011
5,658
Date of Sampling
25/11/2011
Accreditation
UKAS
Date of Analysis
01/12/2011
Moisture Content
VES MES
WW
(g)
DW
(g)
MC
(%)
(ml)
(g)
42.11
38.44
31.86
10
10.36
CRF
BSV
Results
C8-C10
0.69
0.00
<0.5
>C10- C12 >C12-C16
<0.5
<0.5
>C16-C21
>C21-C35
<0.5
<1.5
SUBADRA
Page 15 of 25
London City Airport
TPH Banded - Soil
Sample Location
Results Reported As
BHL3/3
Sample
Dry Weight
sBA08017.002011
Reporting Units
mg/kg
Depth(m)
2.50
Date Received
30/11/2011
5,658
Date of Sampling
25/11/2011
Accreditation
UKAS
Date of Analysis
05/12/2011
Moisture Content
VES MES
WW
(g)
DW
(g)
MC
(%)
(ml)
(g)
41.75
36.16
59.15
10
10.26
CRF
BSV
Results
C8-C10
0.60
0.00
0.666
>C10- C12 >C12-C16
1.96
<0.5
>C16-C21
>C21-C35
<1
<1
SUBADRA
Page 16 of 25
London City Airport
TPH Banded - Soil
Sample Location
Results Reported As
BHL4/1
Sample
Dry Weight
sBA08017.002012
Reporting Units
mg/kg
Depth(m)
1.00
Date Received
30/11/2011
5,658
Date of Sampling
25/11/2011
Accreditation
UKAS
Date of Analysis
01/12/2011
Moisture Content
VES MES
WW
(g)
DW
(g)
MC
(%)
(ml)
(g)
42.04
38.56
29.49
10
10.32
CRF
BSV
Results
C8-C10
0.68
0.00
<0.5
>C10- C12 >C12-C16
<0.5
<0.5
>C16-C21
>C21-C35
<0.5
<1.5
SUBADRA
Page 17 of 25
London City Airport
TPH Banded - Soil
Sample Location
Results Reported As
BHL4/2
Sample
Dry Weight
sBA08017.002013
Reporting Units
mg/kg
Depth(m)
1.50
Date Received
30/11/2011
5,658
Date of Sampling
25/11/2011
Accreditation
UKAS
Date of Analysis
01/12/2011
Moisture Content
VES MES
WW
(g)
DW
(g)
MC
(%)
(ml)
(g)
42.30
40.58
6.82
10
9.97
CRF
BSV
Results
C8-C10
0.53
0.00
<0.5
>C10- C12 >C12-C16
<0.5
<0.5
>C16-C21
>C21-C35
6.64
<2
SUBADRA
Page 18 of 25
London City Airport
TPH Banded - Soil
Sample Location
Results Reported As
BHL4/3
Sample
Dry Weight
sBA08017.002014
Reporting Units
mg/kg
Depth(m)
2.00
Date Received
30/11/2011
5,658
Date of Sampling
25/11/2011
Accreditation
UKAS
Date of Analysis
01/12/2011
Moisture Content
VES MES
WW
(g)
DW
(g)
MC
(%)
(ml)
(g)
32.63
29.00
30.82
10
10.3
CRF
BSV
Results
C8-C10
0.66
0.00
<0.5
>C10- C12 >C12-C16
<0.5
<0.5
>C16-C21
>C21-C35
<0.5
<1.5
SUBADRA
Page 19 of 25
London City Airport
TPH Banded - Soil
Sample Location
Results Reported As
BHL5/1
Sample
Dry Weight
sBA08017.002015
Reporting Units
mg/kg
Depth(m)
1.00
Date Received
30/11/2011
5,658
Date of Sampling
25/11/2011
Accreditation
UKAS
Date of Analysis
01/12/2011
Moisture Content
VES MES
WW
(g)
DW
(g)
MC
(%)
(ml)
(g)
42.05
38.56
29.65
10
10.33
CRF
BSV
Results
C8-C10
0.63
0.00
<0.5
>C10- C12 >C12-C16
<0.5
<0.5
>C16-C21
>C21-C35
<0.5
<1.5
SUBADRA
Page 20 of 25
London City Airport
TPH Banded - Soil
Sample Location
Results Reported As
BHL5/2
Sample
Dry Weight
sBA08017.002016
Reporting Units
mg/kg
Depth(m)
1.50
Date Received
30/11/2011
5,658
Date of Sampling
25/11/2011
Accreditation
UKAS
Date of Analysis
01/12/2011
Moisture Content
VES MES
WW
(g)
DW
(g)
MC
(%)
(ml)
(g)
32.49
29.59
23.26
10
10.26
CRF
BSV
Results
C8-C10
0.65
0.00
<0.5
>C10- C12 >C12-C16
<0.5
<0.5
>C16-C21
>C21-C35
<0.5
<1.5
SUBADRA
Page 21 of 25
London City Airport
TPH Banded - Soil
Sample Location
Results Reported As
BHL5/3
Sample
Dry Weight
sBA08017.002017
Reporting Units
mg/kg
Depth(m)
2.50
Date Received
30/11/2011
5,658
Date of Sampling
25/11/2011
Accreditation
UKAS
Date of Analysis
01/12/2011
Moisture Content
VES MES
WW
(g)
DW
(g)
MC
(%)
(ml)
(g)
42.28
39.85
18.79
10
10.04
CRF
BSV
Results
C8-C10
0.69
0.00
<0.5
>C10- C12 >C12-C16
<0.5
<0.5
>C16-C21
>C21-C35
<0.5
<1.5
SUBADRA
Page 22 of 25
London City Airport
TPH Banded - Soil
Sample Location
Results Reported As
HP1/1
Sample
Dry Weight
sBA08017.002018
Reporting Units
mg/kg
Depth(m)
0.30
Date Received
30/11/2011
5,658
Date of Sampling
25/11/2011
Accreditation
UKAS
Date of Analysis
01/12/2011
Moisture Content
VES MES
WW
(g)
DW
(g)
MC
(%)
(ml)
(g)
32.29
28.34
35.46
10
10.42
CRF
BSV
Results
C8-C10
0.59
0.00
<0.5
>C10- C12 >C12-C16
<0.5
<0.5
>C16-C21
>C21-C35
<0.5
<2
SUBADRA
Page 23 of 25
London City Airport
TPH Banded - Soil
Sample Location
Results Reported As
HP1/3
Sample
Dry Weight
sBA08017.002019
Reporting Units
mg/kg
Depth(m)
0.90
Date Received
30/11/2011
5,658
Date of Sampling
25/11/2011
Accreditation
UKAS
Date of Analysis
01/12/2011
Moisture Content
VES MES
WW
(g)
DW
(g)
MC
(%)
(ml)
(g)
42.05
38.06
35.59
10
10.33
CRF
BSV
Results
C8-C10
0.72
0.00
0.652
>C10- C12 >C12-C16
2.62
0.821
>C16-C21
>C21-C35
0.802
<1.5
SUBADRA
Page 24 of 25
London City Airport
TPH Banded - Soil
Sample Location
Results Reported As
HP2/1
Sample
Dry Weight
sBA08017.002020
Reporting Units
mg/kg
Depth(m)
0.50
Date Received
30/11/2011
5,658
Date of Sampling
25/11/2011
Accreditation
UKAS
Date of Analysis
01/12/2011
Moisture Content
VES MES
WW
(g)
DW
(g)
MC
(%)
(ml)
(g)
42.33
38.54
32.73
10
10.44
CRF
BSV
Results
C8-C10
0.63
0.00
<0.5
>C10- C12 >C12-C16
<0.5
<0.5
>C16-C21
>C21-C35
<0.5
<1.5
SUBADRA
Page 25 of 25
London City Airport
End of Report
SUBADRA
4480
James Edley
Subadra Consulting Ltd
Unit 13 Triangle Business Park
Stoke Mandeville
HP22 5BL
4480
QTS Environmental Ltd
Unit 1
Rose Lane Industrial Estate
Rose Lane
Lenham Heath
Kent
ME17 2JN
t: 01622 851105
[email protected]
QTS Environmental Report No: 8000
Site Reference: BP Air London City Fuel Depot
Project / Job Ref: BA08017
Order No: None Supplied
Sample Receipt Date: 01/12/2011
Sample Scheduled Date: 01/12/2011
Report Issue Number: 1
Reporting Date: 07/12/2011
Authorised by:
Authorised by:
Russell Jarvis
Director
On behalf of QTS Environmental Ltd
Kevin Old
Director
QTS Environmental Ltd - Registered in England No 06620874
Page 1 of 16
'
Unit 1, Rose Lane Industrial Estate
Rose Lane
Lenham Heath
Maidstone
Kent ME17 2JN
Tel : 01622 851105
4480
Soil Analysis Certificate
Date Sampled
Time Sampled
TP / BH No
Additional Refs
Depth (m)
QTSE Sample No
25/11/11
None Supplied
BHL1
S1
0.50
36373
25/11/11
None Supplied
BHL1
S3
2.00
36375
25/11/11
None Supplied
BHL2
S2
1.50
36377
25/11/11
None Supplied
BHL3
S1
1.20
36378
Determinand
Stone Content
Unit
%
MDL Accreditation
<0.1
NONE
<0.1
<0.1
<0.1
<0.1
Metals
Arsenic (As)
Barium (Ba)
Beryllium (Be)
W/S Boron
Cadmium (Cd)
Chromium (Cr)
Copper (Cu)
Lead (Pb)
Mercury (Hg)
Nickel (Ni)
Selenium (Se)
Vanadium (V)
Zinc (Zn)
Unit
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
MDL Accreditation
<2
MCERTS
<5
NONE
<0.5
NONE
<1
NONE
<0.5
MCERTS
<2
MCERTS
<4
MCERTS
<3
MCERTS
<1
NONE
<3
MCERTS
<3
NONE
<2
NONE
<3
MCERTS
7
135
<0.5
<1
<0.5
24
20
91
<1
15
<3
35
68
9
29
<0.5
<1
<0.5
23
11
13
<1
18
<3
36
41
3
75
1
1
<0.5
36
41
22
<1
42
<3
60
118
11
80
0.9
1.1
<0.5
31
73
60
<1
37
<3
47
140
Analytical results are expressed on a dry weight basis where samples are dried at less than 30OC
Analysis carried out on the dried sample is corrected for the stone content
Stone content is classified as material greater than 10mm in diameter
Page 2 of 16
4480
25/11/11
None Supplied
BHL4
S3
2.00
36379
<0.1
18
62
0.9
<1
<0.5
36
28
25
<1
37
<3
67
93
Page 3 of 16
'
Rose Lane
Lenham Heath
Maidstone
Kent ME17 2JN
Tel : 01622 851105
4480
Soil Analysis Certificate
Date Sampled
Time Sampled
TP / BH No
Additional Refs
Depth (m)
QTSE Sample No
25/11/11
None Supplied
HP1
S2
0.60
36380
26/11/11
None Supplied
BHA1
S2
1.40
36381
26/11/11
None Supplied
BHA2
S2
1.50
36384
26/11/11
None Supplied
BHA2
S3
2.40
36385
Determinand
Stone Content
Unit
%
MDL Accreditation
<0.1
NONE
<0.1
<0.1
<0.1
<0.1
Metals
Arsenic (As)
Barium (Ba)
Beryllium (Be)
W/S Boron
Cadmium (Cd)
Chromium (Cr)
Copper (Cu)
Lead (Pb)
Mercury (Hg)
Nickel (Ni)
Selenium (Se)
Vanadium (V)
Zinc (Zn)
Unit
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
MDL Accreditation
<2
MCERTS
<5
NONE
<0.5
NONE
<1
NONE
<0.5
MCERTS
<2
MCERTS
<4
MCERTS
<3
MCERTS
<1
NONE
<3
MCERTS
<3
NONE
<2
NONE
<3
MCERTS
22
99
0.6
<1
<0.5
28
36
109
86.9
26
<3
45
161
18
49
<0.5
1.4
0.5
21
13
21
2.5
18
<3
35
52
7
53
0.6
<1
<0.5
30
11
20
1.1
21
<3
50
53
15
57
0.6
1.2
<0.5
28
23
31
<1
24
<3
54
67
Analysis carried out on the dried sample is corrected for the stone content
Stone content is classified as material greater than 10mm in diameter
Page 4 of 16
4480
26/11/11
None Supplied
BHA3
S1
2.00
36387
<0.1
11
73
1
<1
<0.5
40
14
23
<1
37
<3
70
96
Page 5 of 16
Rose Lane
Lenham Heath
Maidstone
Kent ME17 2JN
Tel : 01622 851105
4480
Soil Analysis Certificate - Speciated PAHs
Date Sampled
Time Sampled
TP / BH No
Additional Refs
Depth (m)
QTSE Sample No
25/11/11
None Supplied
BHL1
S2
1.00
36374
25/11/11
None Supplied
BHL1
S3
2.00
36375
25/11/11
None Supplied
BHL2
S1
1.00
36376
25/11/11
None Supplied
BHL2
S2
1.50
36377
Determinand
Naphthalene
Acenaphthylene
Acenaphthene
Fluorene
Phenanthrene
Anthracene
Fluoranthene
Pyrene
Benzo(a)anthracene
Chrysene
Benzo(b)fluoranthene
Benzo(k)fluoranthene
Benzo(a)pyrene
Indeno(1,2,3-cd)pyrene
Dibenz(a,h)anthracene
Benzo(ghi)perylene
Unit
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
MDL Accreditation
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
0.67
<0.1
<0.1
0.12
0.22
<0.1
0.40
0.41
0.23
0.21
0.30
0.13
0.21
0.19
<0.1
0.16
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
5.92
<0.1
0.13
0.19
0.61
0.15
1.20
1.05
0.78
0.64
0.77
0.33
0.50
0.35
<0.1
0.30
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
Total EPA-16 PAHs
mg/kg
<1.6
3.25
<1.6
12.91
<1.6
MCERTS
Page 6 of 16
4480
25/11/11
None Supplied
BHL3
S1
1.20
36378
<0.1
<0.1
<0.1
<0.1
0.18
<0.1
0.29
0.29
0.15
0.13
0.16
<0.1
<0.1
<0.1
<0.1
<0.1
<1.6
Page 7 of 16
Rose Lane
Lenham Heath
Maidstone
Kent ME17 2JN
Tel : 01622 851105
4480
Date Sampled
Time Sampled
TP / BH No
Additional Refs
Depth (m)
QTSE Sample No
26/11/11
None Supplied
BHA1
S3
3.00
36382
26/11/11
None Supplied
BHA1
S4
3.80
36383
26/11/11
None Supplied
BHA2
S3
2.40
36385
26/11/11
None Supplied
BHA2
S4
3.50
36386
Determinand
Naphthalene
Acenaphthylene
Acenaphthene
Fluorene
Phenanthrene
Anthracene
Fluoranthene
Pyrene
Benzo(a)anthracene
Chrysene
Benzo(a)pyrene
Benzo(ghi)perylene
Unit
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
MDL Accreditation
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
Total EPA-16 PAHs
mg/kg
<1.6
<1.6
<1.6
<1.6
<1.6
MCERTS
Page 8 of 16
Rose Lane
Lenham Heath
Maidstone
Kent ME17 2JN
Tel : 01622 851105
4480
4480
26/11/11
None Supplied
BHA3
S2
3.60
36388
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<1.6
Date Sampled
Time Sampled
TP / BH No
Additional Refs
Depth (m)
QTSE Sample No
26/11/11
None Supplied
BHA3
S3
4.70
36389
Determinand
Naphthalene
Acenaphthylene
Acenaphthene
Fluorene
Phenanthrene
Anthracene
Fluoranthene
Pyrene
Benzo(a)anthracene
Chrysene
Benzo(a)pyrene
Benzo(ghi)perylene
Unit
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
MDL Accreditation
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
MCERTS
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
Total EPA-16 PAHs
mg/kg
<1.6
<1.6
MCERTS
Page 9 of 16
Tel : 01622 851105
4480
4480
Page 10 of 16
Rose Lane
Lenham Heath
Maidstone
Kent ME17 2JN
Tel : 01622 851105
4480
4480
Soil Analysis Certificate - Volatile Organic Compounds (VOC)
Determinand
Dichlorodifluoromethane
Vinyl Chloride
Chloromethane
Chloroethane
Bromomethane
Trichlorofluoromethane
1,1-Dichloroethene
MTBE
trans-1,2-Dichloroethene
1,1-Dichloroethane
cis-1,2-Dichloroethene
2,2-Dichloropropane
Chloroform
Bromochloromethane
1,1,1-Trichloroethane
1,1-Dichloropropene
Carbon Tetrachloride
1,2-Dichloroethane
Benzene
1,2-Dichloropropane
Trichloroethene
Bromodichloromethane
Dibromomethane
TAME
cis-1,3-Dichloropropene
Toluene
trans-1,3-Dichloropropene
1,3-Dichloropropane
Tetrachloroethene
Dibromochloromethane
1,2-Dibromoethane
Chlorobenzene
1,1,1,2-Tetrachloroethane
Ethyl Benzene
m,p-Xylene
o-Xylene
Styrene
Bromoform
Isopropylbenzene
1,2,3-Trichloropropane
n-Propylbenzene
Bromobenzene
2-Chlorotoluene
1,3,5-Trimethylbenzene
4-Chlorotoluene
tert-Butylbenzene
sec-Butylbenzene
p-Isopropyltoluene
1,3-Dichlorobenzene
1,4-Dichlorobenzene
n-Butylbenzene
1,2-Dichlorobenzene
1,2-Dibromo-3-chloropropane
Hexachlorobutadiene
Unit
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
MDL
<5
<5
<10
<5
<10
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<10
<5
<5
<2
<5
<5
<5
<5
<5
<5
<5
<5
<10
<5
<5
<5
<5
<5
<5
<10
<10
<10
<5
<10
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<10
<5
Date Sampled
Time Sampled
TP / BH No
Additional Refs
Depth (m)
QTSE Sample No
25/11/11
None Supplied
BHL1
S2
1.00
36374
25/11/11
None Supplied
BHL1
S3
2.00
36375
25/11/11
None Supplied
BHL2
S1
1.00
36376
25/11/11
None Supplied
BHL2
S2
1.50
36377
25/11/11
None Supplied
BHL3
S1
1.20
36378
Accreditation
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
ISO17025
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
<5
<5
<10
<5
<10
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<10
<5
<5
<2
<5
<5
<5
<5
<5
<5
<5
<5
<10
<5
<5
<5
<5
<5
<5
<10
<10
<10
<5
<10
<5
<5
<5
<5
<5
<5
4875
<5
<5
6178
648
3557
<5
<5
<5
<5
<10
<5
<5
<5
<10
<5
<10
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<10
<5
<5
<2
<5
<5
<5
<5
<5
<5
<5
<5
<10
<5
<5
<5
<5
<5
<5
<10
<10
<10
<5
<10
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<10
<5
<5
<5
<10
<5
<10
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<10
<5
<5
<2
<5
<5
<5
<5
<5
<5
<5
<5
<10
<5
<5
<5
<5
<5
<5
2677
10044
7433
<5
<10
<5
<5
<5
9820
<5
<5
14859
<5
<5
>50000
<5
4803
<5
<5
<5
<5
<10
<5
<5
<5
<10
<5
<10
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<10
<5
<5
<2
<5
<5
<5
<5
<5
<5
<5
<5
<10
<5
<5
<5
<5
<5
<5
<10
<10
<10
<5
<10
<5
<5
<5
<5
<5
<5
<5
<5
<5
17
<5
<5
<5
<5
<5
<5
<10
<5
<5
<5
<10
<5
<10
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<10
<5
<5
5
<5
<5
<5
<5
<5
<5
7
<5
<10
<5
<5
<5
<5
<5
<5
<10
41
23
<5
<10
10
<5
<5
20
<5
<5
38
<5
<5
133
12
13
<5
<5
32
<5
<10
<5
Page 11 of 16
Rose Lane
Lenham Heath
Maidstone
Kent ME17 2JN
Tel : 01622 851105
4480
4480
Soil Analysis Certificate - Volatile Organic Compounds (VOC)
Determinand
Dichlorodifluoromethane
Vinyl Chloride
Chloromethane
Chloroethane
Bromomethane
Trichlorofluoromethane
1,1-Dichloroethene
MTBE
trans-1,2-Dichloroethene
1,1-Dichloroethane
cis-1,2-Dichloroethene
2,2-Dichloropropane
Chloroform
Bromochloromethane
1,1-Dichloropropene
Carbon Tetrachloride
1,2-Dichloroethane
Benzene
1,2-Dichloropropane
Trichloroethene
Bromodichloromethane
Dibromomethane
TAME
cis-1,3-Dichloropropene
Toluene
trans-1,3-Dichloropropene
1,3-Dichloropropane
Tetrachloroethene
Dibromochloromethane
1,2-Dibromoethane
Chlorobenzene
Ethyl Benzene
m,p-Xylene
o-Xylene
Styrene
Bromoform
Isopropylbenzene
1,2,3-Trichloropropane
n-Propylbenzene
Bromobenzene
2-Chlorotoluene
4-Chlorotoluene
tert-Butylbenzene
sec-Butylbenzene
p-Isopropyltoluene
1,3-Dichlorobenzene
1,4-Dichlorobenzene
n-Butylbenzene
1,2-Dichlorobenzene
1,2-Dibromo-3-chloropropane
Hexachlorobutadiene
Unit
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
µg/kg
MDL
<5
<5
<10
<5
<10
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<10
<5
<5
<2
<5
<5
<5
<5
<5
<5
<5
<5
<10
<5
<5
<5
<5
<5
<5
<10
<10
<10
<5
<10
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<10
<5
Date Sampled
Time Sampled
TP / BH No
Additional Refs
Depth (m)
QTSE Sample No
26/11/11
None Supplied
BHA1
S2
1.40
36381
26/11/11
None Supplied
BHA1
S3
3.00
36382
26/11/11
None Supplied
BHA2
S2
1.50
36384
26/11/11
None Supplied
BHA2
S3
2.40
36385
26/11/11
None Supplied
BHA3
S1
2.00
36387
Accreditation
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
ISO17025
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
MCERTS
<5
<5
<10
<5
<10
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<10
<5
<5
<2
<5
<5
<5
<5
<5
<5
<5
<5
<10
<5
<5
<5
<5
<5
<5
<10
<10
<10
<5
<10
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<10
<5
<5
<5
<10
<5
<10
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<10
<5
<5
<2
<5
<5
<5
<5
<5
<5
<5
<5
<10
<5
<5
<5
<5
<5
<5
<10
<10
<10
<5
<10
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<10
<5
<5
<5
<10
<5
<10
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<10
<5
<5
<2
<5
<5
<5
<5
<5
<5
<5
<5
<10
<5
<5
<5
<5
<5
<5
<10
<10
<10
<5
<10
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<10
<5
<5
<5
<10
<5
<10
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<10
<5
<5
<2
<5
<5
<5
<5
<5
<5
<5
<5
<10
<5
<5
<5
<5
<5
<5
<10
<10
<10
<5
<10
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<10
<5
<5
<5
<10
<5
<10
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<10
<5
<5
<2
<5
<5
<5
<5
<5
<5
<5
<5
<10
<5
<5
<5
<5
<5
<5
<10
<10
<10
<5
<10
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<10
<5
Page 12 of 16
Rose Lane
Lenham Heath
Maidstone
Kent ME17 2JN
Tel : 01622 851105
4480
Soil Analysis Certificate - Semi Volatile Organic Compounds (SVOC)
Determinand
Phenol
1,2,4-Trichlorobenzene
2-Nitrophenol
Nitrobenzene
0-Cresol
bis(2-chloroethoxy)methane
bis(2-chloroethyl)ether
2,4-Dichlorophenol
2-Chlorophenol
1,3-Dichlorobenzene
1,4-Dichlorobenzene
1,2-Dichlorobenzene
2,4-Dimethylphenol
Isophorone
Hexachloroethane
p-Cresol
2,4,6-Trichlorophenol
2,4,5-Trichlorophenol
2-Nitroaniline
4-Chloro-3-methylphenol
2-Methylnaphthalene
Hexachlorocyclopentadiene
Hexachlorobutadiene
2,6-Dinitrotoluene
Dimethyl phthalate
2-Chloronaphthalene
4-Nitrophenol
4-Chlorophenyl phenyl ether
3-Nitroaniline
4-Nitroaniline
4-Bromophenyl phenyl ether
Hexachlorobenzene
Diethyl phthalate
Dibenzofuran
Azobenzene
Carbazole
bis(2-ethylhexyl)phthalate
Benzyl butyl phthalate
Di-n-octyl phthalate
Unit MDL
mg/kg <0.1
mg/kg <0.1
mg/kg <0.1
mg/kg <0.1
mg/kg <0.1
mg/kg <0.1
mg/kg <0.1
mg/kg <0.1
mg/kg <0.1
mg/kg <0.1
mg/kg <0.1
mg/kg <0.1
mg/kg <0.15
mg/kg <0.1
mg/kg <0.1
mg/kg <0.15
mg/kg <0.1
mg/kg <0.1
mg/kg <0.1
mg/kg <0.1
mg/kg <0.1
mg/kg <0.1
mg/kg <0.1
mg/kg <0.1
mg/kg <0.1
mg/kg <0.1
mg/kg <0.1
mg/kg <0.1
mg/kg <0.1
mg/kg <0.1
mg/kg <0.1
mg/kg <0.1
mg/kg <0.1
mg/kg <0.1
mg/kg <0.1
mg/kg <0.1
mg/kg <0.15
mg/kg <0.1
mg/kg <0.1
Date Sampled
Time Sampled
TP / BH No
Additional Refs
Depth (m)
QTSE Sample No
26/11/11
None Supplied
BHA1
S2
1.40
36381
26/11/11
None Supplied
BHA2
S2
1.50
36384
26/11/11
None Supplied
BHA3
S1
2.00
36387
Accreditation
NONE
ISO17025
NONE
MCERTS
NONE
MCERTS
MCERTS
MCERTS
ISO17025
ISO17025
ISO17025
ISO17025
ISO17025
NONE
MCERTS
MCERTS
MCERTS
MCERTS
NONE
NONE
MCERTS
NONE
ISO17025
MCERTS
NONE
MCERTS
NONE
MCERTS
NONE
NONE
MCERTS
MCERTS
MCERTS
MCERTS
NONE
ISO17025
MCERTS
MCERTS
MCERTS
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.15
<0.1
<0.1
<0.15
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.15
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.15
<0.1
<0.1
<0.15
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.15
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.15
<0.1
<0.1
<0.15
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.15
<0.1
<0.1
Page 13 of 16
4480
Page 14 of 16
Rose Lane
Lenham Heath
Maidstone
Kent ME17 2JN
Tel : 01622 851105
4480
4480
Soil Analysis Certificate - Sample Descriptions
QTSE Sample No
TP / BH No
Additional Refs
Depth (m)
36373
36374
36375
36376
36377
36378
36379
36380
36381
36382
36383
36384
36385
36386
36387
36388
36389
BHL1
BHL1
BHL1
BHL2
BHL2
BHL3
BHL4
HP1
BHA1
BHA1
BHA1
BHA2
BHA2
BHA2
BHA3
BHA3
BHA3
S1
S2
S3
S1
S2
S1
S3
S2
S2
S3
S4
S2
S3
S4
S1
S2
S3
0.50
1.00
2.00
1.00
1.50
1.20
2.00
0.60
1.40
3.00
3.80
1.50
2.40
3.50
2.00
3.60
4.70
Moisture
Content (%)
9.4
17
22.1
5.6
20.6
22.4
24
19.8
40
50.4
28.6
43.2
63
22.2
63.5
47.2
67.6
Sample Matrix Description
Brown sandy loam with stones
Light brown sand
Light brown clay
Light brown clayey loam
Light brown clay
Brown clay
Brown loam
Brown clayey loam
Brown clayey loam
Brown clayey loam
Brown loam
Brown clay
Brown clay
Brown clay
Brown loam
Page 15 of 16
Rose Lane
Lenham Heath
Maidstone
Kent ME17 2JN
Tel : 01622 851105
4480
4480
Soil Analysis Certificate - Methodology & Miscellaneous Information
Matrix
Soil
Soil
Soil
Analysed
On
D
D
D
Soil
AR
Soil
Soil
Soil
Soil
Soil
Soil
D
AR
D
AR
AR
AR
Soil
AR
Soil
Soil
D
D
Soil
D
Determinand
Brief Method Description
Soil
D
Soil
Soil
Soil
AR
D
AR
Metals Determination of metals by aqua-regia digestion followed by ICP-OES
Cations Determination of cations in soil by aqua-regia digestion followed by ICP-OES
Boron - Water Soluble Determination of water soluble boron in soil by 2:1 hot water extract followed by ICP-OES
Determination of hexavalent chromium in soil by extraction in water then by acidification, addition of
Chromium - Hexavalent
1,5 diphenylcarbazide followed by colorimetry
Magnesium - Water Soluble Determination of water soluble magnesium by extraction with water followed by ICP-OES
Fibrous Material Screen Visual screening of samples for fibrous material
Chloride - Water Soluble (2:1) Determination of chloride by extraction with water followed by titration using silver nitrate
Cyanide - Total Determination of total cyanide by distillation followed by colorimetry
Cyanide - Complex Determination of complex cyanide by distillation followed by colorimetry
Cyanide - Free Determination of free cyanide by distillation followed by colorimetry
Determination of electrical conductivity by addition of saturated calcium sulphate followed by
Electrical Conductivity
electrometric measurement
Elemental Sulphur Determination of elemental sulphur by solvent extraction followed by turbidimeter
Fluoride - Water Soluble Test Kit
Determination of fraction of organic carbon by oxidising with potassium dichromate followed by
FOC (Fraction Organic Carbon)
titration with iron (II) sulphate
Determination of loss on ignition in soil by gravimetrically with the sample being ignited in a muffle
Loss on Ignition @ 450oC
furnace
Moisture Content Moisture content; determined gravimetrically
Determination of organic matter by oxidising with potassium dichromate followed by titration with iron
Organic Matter
(II) sulphate
pH Determination of pH by addition of water followed by electrometric measurement
Phosphorus Determination of phosphorus by aqua-regia digestion followed by ICP-OES
Sulphate (as SO4) - Water Soluble (2:1) Determination of water soluble sulphate by extraction with water followed by ICP-OES
Sulphate (as SO4) - Total Determination of total sulphate by extraction with 10% HCl followed by ICP-OES
Determination of sulphide by acidification and heating to liberate hydrogen sulphide, trapped in an
Sulphide
alkaline solution then assayed by ion selective electrode
Determination of total sulphur by extraction with aqua-regia, potassium iodide/iodate followed by ICPSulphur - Total
OES
Determination of thiocyanate by extraction in caustic soda followed by acidification followed by
Thiocyanate (as SCN)
addition of ferric nitrate followed by colorimetry
Determination of organic matter by oxidising with potassium dichromate followed by titration with iron
Total Organic Carbon (TOC)
(II) sulphate
BTEX Determination of BTEX by headspace GC-MS
Cyclohexane Extractable Matter (CEM) Gravimetrically determined through extraction with cyclohexane
Diesel Range Organics (C10 - C24) Determination of hexane/acetone extractable hydrocarbons by GC-FID
Soil
AR
Mineral Oil (C10 - C40) Determination of hexane/acetone extractable hydrocarbons by GC-FID fractionating with SPE cartridge
Soil
D
Soil
AR
Soil
D
Soil
Soil
Soil
AR
D
D
Soil
D
Soil
AR
Soil
D
Soil
AR
Method
No
E002
E002
E012
Determination of PAH compounds by extraction in acetone and hexane followed by GC-MS with the use
of surrogate and internal standards
Determination of PCB by extraction with acetone and hexane followed by GC-MS
Gravimetrically determined through extraction with petroleum ether
Determination of phenols by distillation followed by colorimetry
Determination of semi-volatile organic compounds by extraction in acetone and hexane followed by GCMS
Gravimetrically determined through extraction with toluene
Determination of acetone/hexane extractable hydrocarbons by GC-FID
Determination of hydrocarbons C6-C10 by headspace GC-MS
Determination of acetone/hexane extractable hydrocarbons by GC-FID
E016
E025
E024
E021
E015
E015
E015
E022
E020
E023
E011
E019
E003
E011
E007
E002
E014
E013
E018
E002
E017
E011
E001
E009
E004
E004
Soil
AR
PAH - Speciated (EPA 16)
Soil
Soil
Soil
AR
D
AR
PCB - 7 Congeners
Petroleum Ether Extract (PEE)
Phenols - Total (monohydric)
Soil
AR
SVOC
Soil
Soil
Soil
Soil
D
AR
AR
AR
Toluene Extractable Matter (TEM)
EPH (C10 – C40)
VPH (C6 - C10)
EPH TEXAS
Soil
AR
TPH CWG Determination of hexane/acetone extractable hydrocarbons by GC-FID fractionating with SPE cartridge
E004
Soil
AR
TPH LQM Determination of hexane/acetone extractable hydrocarbons by GC-FID fractionating with SPE cartridge
E004
Soil
AR
Soil
Soil
AR
AR
EPH (with florisil cleanup) Determination of acetone/hexane extractable hydrocarbons with florisil cleanup step by GC-FID
EPH Product ID Determination of acetone/hexane extractable hydrocarbons by GC-FID
VOCs Determination of volatile organic compounds by headspace GC-MS
E008
E009
E010
E006
E009
E004
E001
E004
E004
E004
E001
Key
D Dried
AR As Received
E005
Page 16 of 16
13 Triangle Business Park, Stoke
SUBADRA
Mandeville, HP22 5BL
Tel. 01296 739400 Fax. 01296 739401
www.subadra.com
Environmental-Geotechnical-Laboratory-Foundations
Laboratory Analysis Report
Report Number 003073
Sampling Date
Report Date
6th December 2011
12th December 2011
Client
Site Name/Address
BP International Ltd (Air BP Branch)
London City Airport
Air BP
Chertsey Road
Sunbury-on-Thames
Middlesex
TW16 7LL
London City Airport
Royal Docks
London
E16 2PX
Number of
Samples
Sample
Type
Analysis Completed
Blind
Testing
UKAS
MCERTS
5
Water
IH QM:E10 based on TNRCC 1005 by GC-FID
RT Corp
Yes
No
QM E10: IH TPH Banded method C8 - C35 - Solvent (pentane) extraction then Liquid injection into GC-FID.
Samples prepares 07-12-11 and analysed 09-12-11.
Analysis Report Approved By
Katherine Clark
Duty Reporting Manager
5,665
Subadra Consulting Ltd Registered in England No 4586038
Registered Office : 13 Triangle Business Park, Stoke Mandeville, HP22 5BL
Page 2 of 10
London City Airport
Glossary of Terms Used in This Report
Blank - A sample known to contain none of the compounds being analysed, and used to confirm that the
analytical instrument is not giving false positives during analysis.
Blind Testing: Name of any blind testing scheme participated in. The laboratory 's accuracy is reported as a Z
score; the lower the Z score the more accurate the analysis, with a score of less than 2 considered excellent.
CRM - Certified Reference Material. A sample prepared by an accredited source and containing a known
concentration of a given compound or compounds, which can be used to validate an analysis method.
Duplicate - A duplicate sample, used to give a measure of the repeatability of a given analysis.
External Calibration - External calibration samples are samples containing a known concentration of the
compounds being analysed. They are added to the analysis sequence after every nth sample being analysed and
provide confirmation that the instrument remains within its calibration range.
Field Blank - Similar to a blank sample, except a field blank accompanies the samples throughout their
existence (i.e. from the site being sampled to the laboratory) and used to provide a check that the samples aren’t
being cross-contaminated during the transportation/storage process.
IRM - In house reference material. A sample prepared by our laboratory and containing a known concentration of
a given compound or compounds, which can be used to validate an analysis method.
Linearity - The linearity of a given analytical method is the range of concentrations between which the analytical
instrument’s response is directly proportional to the concentration being analysed, and hence the range of
concentrations that the instrument can be said to give quantitative results.
LOD - Limit of detection. This is the lowest response for any given compound generated at the instrument 's
detector, that can be differentiated from the instrument's baseline noise.
LOQ - Limit of quantification. This is the lowest concentration that a given compound can be both detected and
its concentration accurately measured in a sample.
MCERTS - An accreditation scheme created by the Environment Agency for the analysis of soil samples used to
determine land quality. The scheme does not apply to analysis of soil samples used for waste classification
purposes or to the analysis of water samples.
Method Calibration - The means by which an analytical method is calibrated. Usually this involves analysing a
number of external calibration samples, containing different concentrations of the compounds to be analysed.
Precision - A measure of the repeatability of the analysis.
Sample - The material provided by the client to the laboratory for analysis.
Sensitivity - The smallest increment in analytical result that can be reliably quantified.
Spike - Also known as an internal calibration, a spike sample is a sample to be analysed which has a known
concentration of another compound added. This provides a check on that the compounds being analysed are
being correctly extracted from the sample matrix.
UKAS - The UK’s implementation of ISO17025, the international standard accreditation for laboratory analysis
SUBADRA
Page 3 of 10
London City Airport
Quality Control/Quality Assurance Information
TPH Banded - Water
5.00
12000
11000
Measured Concentration (ug/L)
10000
9000
8000
7000
6000
5000
4000
3000
2000
1000
0
10 0
0
20 0
0
30 0
0
40 0
0
50 0
0
60 0
0
70 0
0
80 0
0
90 0
10 00
0
11 00
0
12 00
00
0
Our laboratory carries out a wide variety of
verification analyses in order to ensure the
validity of the analysis results we produce.
Samples are analysed in batches, usually
according to the sample chain of custody form
we receive. However, we also add additional
samples into the sample sequence. These
additional
samples
may
include
blanks,
calibration samples, in-house reference material
samples and duplicate samples. In addition to
this, each sample is 'spiked' with a known
concentration of a compound. In the case of this
analysis, we use a combination of
2-fluorobiphenyl and 1-chlorooctadecane. The
results of the analyses we have carried out on
the additional quality assurance samples during
the ten days prior to the samples reported here
are shown in the accompanying graphs. Results
are reported in ug/litre for the C8-C10 band.
These provide a visual indication of the stability
of our laboratory analysis.
Actual Concentration (ug/L)
TPH Banded - Water
Calibration Samples - Previous 10 days
12000
Measured Concentration (ug/L)
11000
10000
9000
8000
7000
6000
5000
4000
3000
2000
1000
10 0
0
20 0
0
30 0
0
40 0
0
50 0
0
60 0
0
70 0
0
80 0
0
90 0
10 00
0
11 00
0
12 00
00
0
0
Actual Concentration (ug/L)
Spike Samples - Previous 10 days
SUBADRA
Page 4 of 10
London City Airport
Summary of Results
TPH Banded - Water
Accreditation
Results Reported As
Blind Testing
UKAS
Not Applicable
RT Corp
Three
Z Scores
TPHLast
Banded
- Water
-0.16
-1.11
-0.78
Analysis Method Parameters
mg/litre
Reporting Units
Linearity
50-10,000 ug/litre
Sensitivity
Sample Location
100 ug/litre
Sample
Limit of Detection
20 ug/litre
Limit of Quantification
50 ug/litre
Precision
+/-1.0ug/litre
Depth
C8-C10
>C10-C12
>C12-C16
>C16-C21
>C21-C35
BH1
wBA08017.002001
1.00
508
816
84.5
<50
<50
BH2
wBA08017.002002
1.16
3280
2550
570
<50
<50
BH3
wBA08017.002003
1.20
<50
<50
<50
<50
<50
BH4
wBA08017.002004
1.03
<50
<50
<50
<50
<50
BH5
wBA08017.002005
1.25
<50
<50
<50
<50
<50
SUBADRA
Page 5 of 10
London City Airport
TPH Banded - Water
TPH Banded - Water
Sample Location
Results Reported As
BH1
Not Applicable
wBA08017.002001
Reporting Units
ug/litre
Depth(m)
1.00
Date Received
07/12/2011
5665
Date of Sampling
06/12/2011
UKAS
Date of Analysis
09/12/2011
Sample
Accreditation
VES
(ml)
3
MES
(g)
30.05
CRF
0.71
Results
BSV
0.00
C8-C10
>C10-C12
>C12-C16
>C16-C21
>C21-C35
508
816
84.5
<50
<50
Note: VES denotes volume of extraction solvent; MES denotes mass of extracted sample; CRF denotes
calibration recovery factor; BSV denotes blank subtraction value
SUBADRA
Page 6 of 10
London City Airport
TPH Banded - Water
Sample Location
Results Reported As
BH2
Not Applicable
wBA08017.002002
Reporting Units
ug/litre
Depth(m)
1.16
Date Received
07/12/2011
5665
Date of Sampling
06/12/2011
UKAS
Date of Analysis
09/12/2011
Sample
Accreditation
VES
(ml)
3
MES
(g)
29.97
CRF
0.66
Results
BSV
0.00
C8-C10
>C10-C12
>C12-C16
>C16-C21
>C21-C35
3280
2550
570
<50
<50
SUBADRA
Page 7 of 10
London City Airport
TPH Banded - Water
Sample Location
Results Reported As
BH3
Not Applicable
wBA08017.002003
Reporting Units
ug/litre
Depth(m)
1.20
Date Received
07/12/2011
5665
Date of Sampling
06/12/2011
UKAS
Date of Analysis
09/12/2011
Sample
Accreditation
VES
(ml)
3
MES
(g)
29.97
CRF
1.27
Results
BSV
0.00
C8-C10
>C10-C12
>C12-C16
>C16-C21
>C21-C35
<50
<50
<50
<50
<50
SUBADRA
Page 8 of 10
London City Airport
TPH Banded - Water
Sample Location
Results Reported As
BH4
Not Applicable
wBA08017.002004
Reporting Units
ug/litre
Depth(m)
1.03
Date Received
07/12/2011
5665
Date of Sampling
06/12/2011
UKAS
Date of Analysis
09/12/2011
Sample
Accreditation
VES
(ml)
3
MES
(g)
30.05
CRF
1.07
Results
BSV
0.00
C8-C10
>C10-C12
>C12-C16
>C16-C21
>C21-C35
<50
<50
<50
<50
<50
SUBADRA
Page 9 of 10
London City Airport
TPH Banded - Water
Sample Location
Results Reported As
BH5
Not Applicable
wBA08017.002005
Reporting Units
ug/litre
Depth(m)
1.25
Date Received
07/12/2011
5665
Date of Sampling
06/12/2011
UKAS
Date of Analysis
09/12/2011
Sample
Accreditation
VES
(ml)
3
MES
(g)
30.04
CRF
1.14
Results
BSV
0.00
C8-C10
>C10-C12
>C12-C16
>C16-C21
>C21-C35
<50
<50
<50
<50
<50
SUBADRA
Page 10 of 10
London City Airport
End of Report
SUBADRA
Steven Partridge
Unit 13 Triangle Business Park
Stoke Mandeville
HP22 5BL
Unit 1
Rose Lane Industrial Estate
Rose Lane
Lenham Heath
Kent
ME17 2JN
t: 01622 851105
[email protected]
Site Reference: London City Airport
Sample Receipt Date: 22/12/2011
Sample Scheduled Date: 22/12/2011
Report Issue Number: 1
Authorised by:
Authorised by:
Russell Jarvis
Director
Kevin Old
Director
Page 1 of 1
Jones Environmental Laboratory
Unit 3 Deeside Point
Zone 3
Deeside Industrial Park
Deeside
CH5 2UA
Subadra
Unit 13
Triangle Business Park
Quilters Way
Stoke Mandeville
HP22 5BL
Tel: +44 (0) 1244 833780
Fax: +44 (0) 1244 833781
Attention :
James Edley
Date :
30th December, 2011
Your reference :
BPA08017
Our reference :
Test Report 11/9061 Batch 1
Location :
LONDON CITY
Date samples received :
22nd December, 2011
Status :
Final report
Issue :
1
One sample was received for analysis on 22nd December, 2011. Please find attached our Test Report which should be read with notes at the end
of the report and should include all sections if reproduced. Interpretations and opinions are outside the scope of any accreditation, and all results
relate only to samples supplied.
All analysis is carried out on as received samples and reported on a dry weight basis unless stated otherwise. Results are not surrogate corrected.
J W Farrell- Jones CChem FRSC
Chartered Chemist
QF-PM 3.1.1 v9
Please include all sections of this report if it is reproduced
All solid results are expressed on a dry weight basis unless stated otherwise.
1 of 6
Client Name:
Subadra
Reference:
BPA08017
Location:
LONDON CITY
Contact:
James Edley
Liquids/products: V=40ml vial, G=glass bottle, P=plastic bottle
JE Job No.:
11/9061
H=H2SO4, Z=ZnAc, N=NaOH, HN=HN03
J E Sample No.
Sample ID
Report : Product
1
BH2
Depth
Please see attached notes for all
abbreviations and acronyms
COC No / misc
Containers
V
Sample Date 06/12/2011
Sample Type
Batch Number
Product
1
LOD
Units
Method
No.
Date of Receipt 22/12/2011
Whole Oil Trace
See Attached
None
TM1/PM0
Carbon Range
c6-c18
None
TM1/PM0
Boiling Point Range
69-317
Degrees C
TM1/PM0
<50
Interpretation
Weathered
kerosene
None
TM1/PM0
Pristane/Phytane Ratio
Not present
None
TM1/PM0
nC17/Pristane Ratio
Not present
None
TM1/PM0
Age (± 2years) (Christensen & Larsen 1993)
Not possible
as relevant
markers not
present
Years
TM1/PM0
QF-PM 3.1.2 v9
2 of 6
Jones Environmental Forensics Ltd
Whole Oil Analysis by GC-FID
No.4225
Job Number:
Client ID:
Description:
11/9061-1
BH2
Dark Brown Oil
Carbon Range:
Boiling Point Range:
Pristane/Phytane Ratio:
nC17/Pristane Ratio:
Age(+/-2 years
nC6
to
nC18
69°C
to
317°C
Not present
Not present
Not possible as relevant markers are either not present or values are
above the permitted range
Fingerprint:
Weathered Kerosene
Chromatogram
FID1A, (DECEMBER2011\2812112011-12-2816-32-08\012F1701.D)
pA
600
c12
500
400
300
c10
200
c15
100
10
Analyst: A. Halligan
QF-PM 3.1.2 v9
20
30
40
50
min
Date: 30/12/11
3 of 6
NOTES TO ACCOMPANY ALL SCHEDULES AND REPORTS
JE Job No.:
11/9061
SOILS
Please note we are only MCERTS accredited for sand, loam and clay and any other matrix is outside our scope of accreditation.
Where an MCERTS report has been requested, you will be notified within 48 hours of any samples that have been identified as being outside our
MCERTS scope. As validation has been performed on clay, sand and loam, only samples that are predominantly these matrices, or combinations
of them will be within our MCERTS scope. If samples are not one of a combination of the above matrices they will not be marked as MCERTS
accredited.
It is assumed that you have taken representative samples on site and require analysis on a representative subsample. Stones will generally be
included unless we are requested to remove them.
All samples will be discarded one month after the date of reporting, unless we are instructed to the contrary. If we are instructed to keep samples,
a storage charge of £1 (1.5 Euros) per sample per month will be applied until we are asked to dispose of them.
If you have not already done so, please send us a purchase order if this is required by your company.
Where appropriate please make sure that our detection limits are suitable for your needs, if they are not, please notify us immediately.
All analysis is reported on a dry weight basis unless stated otherwise. Results are not surrogate corrected. Samples are dried at 35°C unless
otherwise stated. Moisture content for CEN Leachate tests are dried at 105°C
WATERS
Please note we are not a Drinking Water Inspectorate (DWI) Approved Laboratory . It is important that detection limits are carefully considered
when requesting water analysis.
UKAS accreditation applies to surface water and groundwater and one other matrix which is analysis specific, any other liquids are outside our
scope of accreditation
As surface waters require different sample preparation to groundwaters the laboratory must be informed of the water type when submitting
samples.
DEVIATING SAMPLES
Samples must be received in a condition appropriate to the requested analyses. All samples should be submitted to the laboratory in suitable
containers with sufficient ice packs to sustain an appropriate temperature for the requested analysis. If this is not the case you will be informed
and any analysis that may be compromised highlighted on your schedule/ report by the use of a symbol.
The use of any of the following symbols indicates that the sample was deviating and the test result may be unreliable:
$
Sample temperature on receipt considered inappropriate for analysis requested.
^
Samples exceeding recommended holding times.
&
Samples received in inappropriate containers (e.g. volatile samples not submitted in VOC jars/vials).
¹
The pH was not tested within 6 hours of sampling and therefore the sample is considered deviating.
~
No sampling date given, unable to confirm if samples are with acceptable holding times.
SURROGATES
Surrogate compounds are added during the preparation process to monitor recovery of analytes. However low recovery in soils is often due to
peat, clay or other organic rich matrices. For waters this can be due to oxidants, surfactants, organic rich sediments or remediation fluids.
Acceptable limits for most organic methods are 70 - 130% and for VOCs are 50 - 150%. When surrogate recoveries are outside the performance
criteria but the associated AQC passes this is assumed to be due to matrix effect. Results are not surrogate corrected.
NOTE
Data is only accredited when all the requirements of our Quality System have been met. In certain circumstances where the requirements have
not been met, the laboratory may issue the data in an interim report but will remove the accreditation, in this instance results should be considered
indicative only. Where possible samples will be re-extracted and a final report issued with accredited results. Please do not hesitate to contact
the laboratory if further details are required of the circumstances which have led to the removal of accreditation.
QF-PM 3.1.9 v19
4 of 6
JE Job No.:
11/9061
ABBREVIATIONS and ACRONYMS USED
#
UKAS accredited.
B
Indicates analyte found in associated method blank
DR
Dilution required.
M
MCERTS accredited.
NA
Not applicable
NAD
ND
NDP
No Asbestos Detected.
None Detected (usually refers to VOC and/SVOC TICs).
No Determination Possible
SS
Calibrated against a single substance.
SV
Surrogate recovery outside performance criteria. This may be due to a matrix effect.
W
Results expressed on as received basis.
+
AQC failure, accreditation has been removed from this result, if appropriate, see 'Note' on previous page.
++
Result outside calibration range, results should be considered as indicative only and are not accredited.
*
QF-PM 3.1.9 v19
Analysis subcontracted to a Jones Environmental approved laboratory.
5 of 6
Method Code Appendix
JE Job No 11/9061
Test Method No.
TM1
Description
Whole Oil by GC-FID
QF-PM 3.1.10 v10
Prep Method
No. (if
appropriate)
PM0
Description
No Preparation
UKAS
MCERTS
(soils
only)
Analysis done on As
Received (AR) or Air
Dried (AD)
Solid Results
expressed on
Dry/Wet basis
AR
6 of 6

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