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DRAINAGE STRATEGY REPORT
Proposed Development at Alfred’s Way, Barking
May 2019, Issue 1
_________________________________________________________________________________________
SL06107 – Drainage Strategy Report – Issue 1 1
DRAINAGE STRATEGY REPORT
FOR
PROPOSED DEVLOPEMENT
AT
ALFRED’S WAY, BARKING, ESSEX
REPORT PREPARED ON BEHALF OF
NEWABLE PROPRTY DEVLOPMENTS LTD
DRAINAGE STRATEGY REPORT
Proposed Development at Alfred’s Way, Barking
May 2019, Issue 1
_________________________________________________________________________________________
SL06107 – Drainage Strategy Report – Issue 1 2
This report is written for the sole use of Newable Property Developments Ltd and their appointed agents. No other third
party may rely on or reproduce the contents of this report without the written approval of HBPW LLP. If any unauthorised
third party comes into possession of this report, they rely upon it entirely at their own risk and the authors do not
owe them any Duty of Care or Skill.
Document Control Sheet
Issue Record
Issue No. Description Date
1 First Issue 14.05.19
Signature
Prepared by
Name: Emyr Parry
Job Title: Partner
Date: 14.05.19
Checked
Name: Shaun Strugnell
Job Title: Partner
Date: 14.05.19
Approved
Name: Emyr Parry
Job Title: Partner
Date: 14.05.19
DRAINAGE STRATEGY REPORT
Proposed Development at Alfred’s Way, Barking
May 2019, Issue 1
_________________________________________________________________________________________
SL06107 – Drainage Strategy Report – Issue 1 3
Contents Page
Content PAGE
1.0 Introduction 4
2.0 Site Description 5
3.0 Proposed Development 7
4.0 Surface Water Drainage 7
5.0 Foul Water Drainage 9
6.0 Design Standards 9
7.0 Sustainable Drainage Systems (SuDS) 10
APPENDICES
Appendix A: Calculations
Appendix B: Proposed drainage strategy drawing.
Appendix C: Correspondence from Thames Water
Appendix D: Existing Topographical and Buried services survey
DRAINAGE STRATEGY REPORT
Proposed Development at Alfred’s Way, Barking
May 2019, Issue 1
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SL06107 – Drainage Strategy Report – Issue 1 4
1.0 INTRODUCTION
HBPW LLP has been commissioned by Newable Developments Limited to prepare a Drainage Strategy Report in
relation to the proposed development for Land at Alfred’s Way, Barking1.
The report has been prepared using the following documents for guidance: -
• Building Regulations Part H –Drainage and waste disposal
• Ciria (C697) – The SuDS Manual
• Flood Risk Assessment by Herrington Consulting Limited dated April 2019.
The following statement is a summary of the drainage strategy proposed for the site. The drainage strategy
described has been developed in conjunction with The Flood Risk Assessment prepared for the development by
Herrington Consulting Limited.
2.0 SITE DESCRIPTION
2.1 Site Location
The site is located at OS coordinates 546418, 183583, off Alfred’s Way in Barking, Essex. The site covers an area of
approximately 0.7 hectares and is currently occupied by a number of factory and commercial units. The location
of the site is shown below. North is to the top of the page.
DRAINAGE STRATEGY REPORT
Proposed Development at Alfred’s Way, Barking
May 2019, Issue 1
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SL06107 – Drainage Strategy Report – Issue 1 5
2.2 Site Description
The site slopes by roughly 2m from north to south. Access to the site is from Alfred’s Way; located to the North of
the site. The site is bounded to the east and west by existing industrial units, these adjacent units sits at a higher
elevation to the site as a result of north to south slope of the development site. To the south of the site lies an
existing drainage ditch, the ditch is assumed to be connected to the Mayes brook located to the south of the
Railway, please refer to the below extract taken from the Flood Risk Assessment by Herrington Consulting Ltd:
The current buildings on the site are due to be demolished to make way for the proposed development. Due to its
previous developed nature the site has infrastructure with respect to drainage.
Foul Water
The current building located to the north of the site, is served by an existing underground separate foul water
system. The foul sewer serving the existing building is arranged with a final foul water manhole located in the
north east of the site before connecting into the Public Foul Water sewer located in Alfred’s Way.
The existing building is served by the following welfare amenities:
• 12 WCs
• 5no. large kitchen sinks
• 10 no. hand basins
• 4no. Urinals
DRAINAGE STRATEGY REPORT
Proposed Development at Alfred’s Way, Barking
May 2019, Issue 1
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SL06107 – Drainage Strategy Report – Issue 1 6
Surface Water
Surface water on the site is captured by an existing system of underground drainage pipes connecting to an existing
open drainage channel located running along the eastern boundary over the southern half of the site. The open
channel discharges freely into the drainage ditch running along the southern in the south east corner of the site.
The above photograph is taken looking south showing the existing drainage channel
Asset mapping provided by Thames Water shows that the existing drainage channel is also used to convey surface
water from land to the north of the site towards the drainage ditch located at the southern boundary of the site.
DRAINAGE STRATEGY REPORT
Proposed Development at Alfred’s Way, Barking
May 2019, Issue 1
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SL06107 – Drainage Strategy Report – Issue 1 7
Surface water falling onto external paved areas is captured by a series of existing drainage channels and
underground pipe network, it is assumed that surface water is treated by the existing interceptor located at the
southern boundary before discharging into the existing drainage ditch.
Refer to survey drawings for the existing site included in Appendix D.
2.3 Ground Conditions
An Intrusive Investigation has been carried out on the site by GD Pickles in 2018. The ground conditions can be
summarised as follows: -
STRATUM DESCRIPTION Typical depths encountered
between
Site Surface Combination of Tarmac and concrete 0.1m – 0.35m bgl
Made ground Crushed aggregate hard core comprising gravels
of mixed lithology, crushed brick, ash and clinker
Increasing from 0.6m in south to
1.5m in north
Natural ground Soft to very soft silty clay with bands of peat 3m to 5m bgl
Medium dense sand/gravel Between 3m and 5m and below to
end of boreholes
Groundwater Groundwater encountered in all boreholes
between 1m and 3m bgl
Geology
The geology of the site is described in the Ground Investigation report by GDP Pickles as being underlain by
superficial deposits comprising the Taplow Gravels in the northern quarter of the site and Alluvium in the south.
These deposits are underlain by Bedrock of the London Clay Formations, anticipated between 5 and 7m below
ground level.
2.4 Hydrogeology
The superficial deposits are classified as Secondary A (Taplow Gravels) and Secondary (undifferentiated) Alluvium.
The underlying London Clay is an unproductive Aquifer.
2.5 Hydrology
A drainage channel is located running along the eastern boundary in the southern half of the building discharging
into the drainage ditch located running parallel with the southern boundary.
It is assumed that drainage ditch connects with the Mayes Brook located to the south of the Railway lines towards
the south of the site. The existing drainage ditch is currently overgrown with vegetation.
3.0 PROPOSED DEVELOPMENT
The proposed development comprises the construction of 2 large industrial buildings and associated access road,
car parking and service yards.
A drawing illustrating the proposed development is included in Appendix B.
4.0 SURFACE WATER DRAINAGE
Surface water run off generated by a development site should, as far as possible be managed in a sustainable
manner to mimic the surface water flows arising from the un-developed site.
DRAINAGE STRATEGY REPORT
Proposed Development at Alfred’s Way, Barking
May 2019, Issue 1
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SL06107 – Drainage Strategy Report – Issue 1 8
The Building Act 2000 Clause H3.3 recommends that connection to a public water sewer will only be consented
when it can be demonstrated that the hierarchy of disposal methods have been examined and proven to be
impracticable. The disposal hierarchy being: -
1. Disposal by Soakaway
2. Disposal to Watercourse
3. Disposal to Sewer.
Consideration of various options for disposal has been considered for the development. The existing surface water
run off on the site in the form of rainfall is disposed by discharge into the existing drainage ditch. It is therefore
proposed to discharge the surface water generated by the development by the same means into the drainage
ditch rather than connect to the public sewer.
The use of infiltration or soakaways in the form of concentric rings has been discounted due to the ground
conditions encountered on the site.
It is proposed to adopt the following approach to the disposal of surface water:
Rainfall falling onto the roofs of the buildings is proposed as being captured by gutters and downpipes, which in
turn flow through an underground pipe system will ultimately discharge into the drainage ditch.
Rainfall falling onto external paved areas will be captured by gullies and drainage channels, which in turn flow
through an underground through an underground pipe system passing through a full retention separator prior to
discharge into the drainage ditch.
Discharge from the site into the drainage ditch will be restricted; with flows in exceedance of the restricted
discharge rate stored on site in the form of underground storage tanks and released into the river at the restricted
rate once the storm event has subsided.
The restricted discharge rate has been calculated by Herrington Consulting Ltd to provide a 50% reduction over
existing brownfield run off rates. The proposed discharge rate has been calculated as 55 L/s for all storm event up
to and including the 1 in 100 storm event + 20% allowance for climate change. Please refer to the Flood Risk
Assessment by Herrington Consulting Ltd for the derivation of the discharge rate. It is proposed to control the
discharge rate by means of a packaged pumping station located downstream of the attenuation system.
It is proposed the existing open drainage channel conveying surface water from land north of the site; is replaced
with an underground pipe sewer. Due the relative position of the proposed buildings to the drain a build over
agreement with Thames Water will be necessary.
Please refer to Appendix A for calculations to determine the volume of storage required.
At this stage, the Environment Agency have not been contacted with regards to the proposals for the development.
The FRA produced by Herrington Consulting Ltd describes the site as being within a floodplain, as part of the
proposals for the scheme it is attempted to keep the finished ground levels for the development to be the same
or as reasonably close to the current site levels so that there will no adverse effect on the floodplain.
However due to the existing slope from north to south of the site it is necessary for ground levels to be raised over
extents of the site by approximately 200mm in order to provide adequate surface falls taking into account the
geometry of the buildings, by doing so there will be a loss in floodplain volume in the event of a flood event. As
such it is proposed as part of the drainage proposals to provide additional underground storage tanks to
counterbalance the loss in flood volume being able to be stored across the site, so that there is no increased flood
DRAINAGE STRATEGY REPORT
Proposed Development at Alfred’s Way, Barking
May 2019, Issue 1
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SL06107 – Drainage Strategy Report – Issue 1 9
risk on the surrounding area due to the development. Buildings are to provided with flood resilience measures in
accordance with the Flood Risk Assessment.
5.0 FOUL WATER
It is proposed to connect all foul water from the development into the existing public sewer located in Alfred’s
Way. A pre development enquiry has been submitted to Thames Water, a response from Thames Water has been
received confirming that there is adequate capacity for the development. The response is included in Appendix C.
Due to the geometry of the site it is intended for the underground system on the site to drain by gravity to a
private packaged pumping station located in the north east corner of the site. It is intended to reuse the existing
connection from the site to the public sewer subject to a survey to ensure the condition of the existing connection
is adequate.
In the event of failure of the private packaged pumping station, the station will incorporate storage for flows
generated in a 24-hour period.
6.0 DESIGN STANDARDS
Sewers within the development are to be designed in accordance with the latest industry standards. It is proposed
to adopt the guidelines as set out in Part H of the Building Regulations – Drainage and waste disposal.
Sufficient velocities shall be achieved in the system to reduce to a minimum the build-up of silt and prevent
excessive detention; however as with any sewer system a routine maintenance strategy will be required.
7.0 SUSTAINABLE DRAINAGE SYSTEMS (SuDS)
To ensure the quality of run off leaving the site is treated to a suitable level as required by the Environment Agency
a number of SuDS features are incorporated into the development in line with CIRIA C697.
The following treatments shall be incorporated into the development: -
• Trapped gullies, Drainage channels and catchpit chambers. These will reduce flow velocities and allow
larger particulates to settle out by gravitational separation.
• Rainwater pipes. Sediment sumps are to be installed on all rainwater pipes, these will reduce flow
velocities and allow larger particulates to settle out by gravitational separation.
• Full retention Separator. The separator will treat surface water flows falling onto paved areas used for
vehicle movements capturing contaminants. The separator will include measures to capture silt.
The above SuDS features shall ensure that surface water run-off is treated to a suitable level in accordance with
Ciria C697.
All features shall be owned and maintained by the owners of the site as part of the long-term future maintenance
of the development. A detailed Maintenance regime shall be designed at detailed design stage and included in the
Owner’s Manual for the scheme to ensure that the SuDS features continue to function as designed.
DRAINAGE STRATEGY REPORT
Proposed Development at Alfred’s Way, Barking
May 2019, Issue 1
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SL06107 – Drainage Strategy Report – Issue 1 10
Appendix A
Calculations
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FOUL SEWERAGE DESIGN
Network Design Table for Foul - Unit
©1982-2018 Innovyze
PN Length
(m)
Fall
(m)
Slope
(1:X)
Area
(ha)
Units Base
Flow (l/s)
k
(mm)
HYD
SECT
DIA
(mm)
Section Type Auto
Design
F1.000 39.091 0.490 79.8 0.000 4.9 0.0 1.500 o 100 Pipe/Conduit
F1.001 22.418 0.280 80.0 0.000 4.9 0.0 1.500 o 100 Pipe/Conduit
F1.002 20.318 0.255 79.7 0.000 0.0 0.0 1.500 o 100 Pipe/Conduit
F2.000 19.674 0.395 49.8 0.000 4.9 0.0 1.500 o 100 Pipe/Conduit
F2.001 21.000 0.525 40.0 0.000 4.9 0.0 1.500 o 100 Pipe/Conduit
F2.002 12.200 0.305 40.0 0.000 4.9 0.0 1.500 o 150 Pipe/Conduit
F2.003 9.612 0.240 40.0 0.000 4.9 0.0 1.500 o 100 Pipe/Conduit
F1.003 30.943 0.205 150.9 0.000 0.0 0.0 1.500 o 150 Pipe/Conduit
F1.004 15.668 0.105 149.2 0.000 4.9 0.0 1.500 o 150 Pipe/Conduit
F1.005 20.996 0.140 150.0 0.000 0.0 0.0 1.500 o 150 Pipe/Conduit
F1.006 12.506 0.085 147.1 0.000 0.0 0.0 1.500 o 150 Pipe/Conduit
F1.007 18.153 0.121 150.0 0.000 4.9 0.0 1.500 o 100 Pipe/Conduit
Network Results Table
PN US/IL
(m)
Σ Area
(ha)
Σ Base
Flow (l/s)
Σ Units Add Flow
(l/s)
P.Dep
(mm)
P.Vel
(m/s)
Vel
(m/s)
Cap
(l/s)
Flow
(l/s)
F1.000 1.050 0.000 0.0 4.9 0.0 30 0.57 0.75 5.9 1.1
F1.001 0.560 0.000 0.0 9.8 0.0 35 0.63 0.74 5.8 1.6
F1.002 0.280 0.000 0.0 9.8 0.0 35 0.63 0.75 5.9 1.6
F2.000 1.490 0.000 0.0 4.9 0.0 26 0.67 0.94 7.4 1.1
F2.001 1.095 0.000 0.0 9.8 0.0 30 0.80 1.05 8.3 1.6
F2.002 0.570 0.000 0.0 14.7 0.0 29 0.82 1.39 24.5 1.9
F2.003 0.265 0.000 0.0 19.6 0.0 35 0.89 1.05 8.3 2.2
F1.003 0.025 0.000 0.0 29.4 0.0 47 0.57 0.71 12.6 2.7
F1.004 -0.180 0.000 0.0 34.3 0.0 49 0.58 0.72 12.7 2.9
F1.005 -0.285 0.000 0.0 34.3 0.0 49 0.58 0.71 12.6 2.9
F1.006 -0.425 0.000 0.0 34.3 0.0 49 0.58 0.72 12.7 2.9
F1.007 -0.510 0.000 0.0 39.2 0.0 64 0.59 0.54 4.3 3.1
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Date 15/05/2019 Designed by TS
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STORM SEWER DESIGN by the Modified Rational Method
Network Design Table for Storm
©1982-2018 Innovyze
PN Length
(m)
Fall
(m)
Slope
(1:X)
I.Area
(ha)
T.E.
(mins)
Base
Flow (l/s)
k
(mm)
HYD
SECT
DIA
(mm)
Section Type Auto
Design
S3.000 19.597 0.131 150.0 0.059 5.00 0.0 0.600 o 225 Pipe/Conduit
S3.001 6.784 0.250 27.1 0.000 0.00 0.0 0.600 o 225 Pipe/Conduit
S4.000 29.939 0.665 45.0 0.058 5.00 0.0 0.600 o 225 Pipe/Conduit
S5.000 23.741 0.150 158.3 0.099 5.00 0.0 0.600 o 225 Pipe/Conduit
S4.001 40.219 0.750 53.6 0.027 0.00 0.0 0.600 o 300 Pipe/Conduit
S6.000 7.948 0.055 144.5 0.024 5.00 0.0 0.600 o 150 Pipe/Conduit
S6.001 8.855 0.060 147.6 0.030 0.00 0.0 0.600 o 225 Pipe/Conduit
S6.002 17.272 0.135 127.9 0.020 0.00 0.0 0.600 o 225 Pipe/Conduit
S4.002 2.558 0.020 127.9 0.015 0.00 0.0 0.600 o 300 Pipe/Conduit
S4.003 9.693 0.430 22.5 0.000 0.00 0.0 0.600 o 300 Pipe/Conduit
S7.000 40.295 0.840 48.0 0.088 5.00 0.0 0.600 o 225 Pipe/Conduit
S8.000 44.100 0.695 63.5 0.078 5.00 0.0 0.600 o 225 Pipe/Conduit
S9.000 30.200 0.300 100.7 0.055 5.00 0.0 0.600 o 150 Pipe/Conduit
Network Results Table
PN Rain
(mm/hr)
T.C.
(mins)
US/IL
(m)
Σ I.Area
(ha)
Σ Base
Flow (l/s)
Foul
(l/s)
Add Flow
(l/s)
Vel
(m/s)
Cap
(l/s)
Flow
(l/s)
S3.000 50.00 5.31 0.690 0.059 0.0 0.0 0.0 1.07 42.4 8.0
S3.001 50.00 5.35 0.555 0.059 0.0 0.0 0.0 2.52 100.3 8.0
S4.000 50.00 5.26 1.720 0.058 0.0 0.0 0.0 1.95 77.7 7.9
S5.000 50.00 5.38 1.205 0.099 0.0 0.0 0.0 1.04 41.2 13.4
S4.001 50.00 5.69 1.055 0.184 0.0 0.0 0.0 2.15 152.1 24.9
S6.000 50.00 5.16 0.555 0.024 0.0 0.0 0.0 0.83 14.7 3.3
S6.001 50.00 5.30 0.500 0.054 0.0 0.0 0.0 1.07 42.7 7.4
S6.002 50.00 5.55 0.440 0.074 0.0 0.0 0.0 1.15 45.9 10.0
S4.002 50.00 5.72 0.305 0.273 0.0 0.0 0.0 1.39 98.2 36.9
S4.003 50.00 5.77 0.285 0.273 0.0 0.0 0.0 3.33 235.1 36.9
S7.000 50.00 5.35 1.365 0.088 0.0 0.0 0.0 1.89 75.3 11.9
S8.000 50.00 5.45 1.365 0.078 0.0 0.0 0.0 1.64 65.4 10.6
S9.000 50.00 5.50 2.250 0.055 0.0 0.0 0.0 1.00 17.7 7.4
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DN22 7UX
Date 15/05/2019 Designed by TS
File SL06107_rev 1_single st... Checked by EP
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STORM SEWER DESIGN by the Modified Rational Method
Network Design Table for Storm
©1982-2018 Innovyze
PN Length
(m)
Fall
(m)
Slope
(1:X)
I.Area
(ha)
T.E.
(mins)
Base
Flow (l/s)
k
(mm)
HYD
SECT
DIA
(mm)
Section Type Auto
Design
S9.001 17.990 0.180 100.0 0.000 0.00 0.0 0.600 o 150 Pipe/Conduit
S9.002 26.780 1.150 23.3 0.000 0.00 0.0 0.600 o 150 Pipe/Conduit
S8.001 21.712 0.145 150.0 0.000 0.00 0.0 0.600 o 225 Pipe/Conduit
S7.001 20.883 0.670 31.2 0.000 0.00 0.0 0.600 o 300 Pipe/Conduit
S4.004 12.882 2.150 6.0 0.000 0.00 0.0 0.600 o 450 Pipe/Conduit
S4.005 19.521 0.057 344.1 0.000 0.00 0.0 0.600 o 450 Pipe/Conduit
S4.006 17.021 0.058 293.5 0.000 0.00 0.0 0.600 o 450 Pipe/Conduit
S3.002 5.456 0.025 218.0 0.000 0.00 0.0 0.600 o 300 Pipe/Conduit
Network Results Table
PN Rain
(mm/hr)
T.C.
(mins)
US/IL
(m)
Σ I.Area
(ha)
Σ Base
Flow (l/s)
Foul
(l/s)
Add Flow
(l/s)
Vel
(m/s)
Cap
(l/s)
Flow
(l/s)
S9.001 50.00 5.80 2.000 0.055 0.0 0.0 0.0 1.00 17.8 7.4
S9.002 50.00 6.01 1.820 0.055 0.0 0.0 0.0 2.10 37.0 7.4
S8.001 50.00 6.35 0.670 0.133 0.0 0.0 0.0 1.07 42.4 18.0
S7.001 50.00 6.48 0.525 0.221 0.0 0.0 0.0 2.83 199.8 29.9
S4.004 50.00 6.50 -0.150 0.494 0.0 0.0 0.0 8.35 1327.4 66.9
S4.005 50.00 6.80 -2.300 0.494 0.0 0.0 0.0 1.09 173.4 66.9
S4.006 50.00 7.04 -2.357 0.494 0.0 0.0 0.0 1.18 187.9 66.9
S3.002 50.00 7.13 -2.415 0.553 0.0 0.0 0.0 1.06 75.0 74.9
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Online Controls for Storm
©1982-2018 Innovyze
Non Return Valve Manhole: S15, DS/PN: S4.004, Volume (m³): 5.1
Pump Manhole: S19, DS/PN: S3.002, Volume (m³): 12.8
Invert Level (m) -2.415
Depth (m) Flow (l/s) Depth (m) Flow (l/s) Depth (m) Flow (l/s) Depth (m) Flow (l/s)
0.200 55.0000 1.800 55.0000 3.400 55.0000 5.000 55.0000
0.400 55.0000 2.000 55.0000 3.600 55.0000 5.200 55.0000
0.600 55.0000 2.200 55.0000 3.800 55.0000 5.400 55.0000
0.800 55.0000 2.400 55.0000 4.000 55.0000 5.600 55.0000
1.000 55.0000 2.600 55.0000 4.200 55.0000 5.800 55.0000
1.200 55.0000 2.800 55.0000 4.400 55.0000 6.000 55.0000
1.400 55.0000 3.000 55.0000 4.600 55.0000
1.600 55.0000 3.200 55.0000 4.800 55.0000
Volume Summary (Static)
Length Calculations based on True Length
Pipe
Number
USMH
Name
Manhole
Volume (m³)
Pipe
Volume (m³)
Storage
Structure
Volume (m³)
Total
Volume (m³)
S3.000 S17 1.131 0.731 0.000 1.862
S3.001 S18 1.284 0.210 0.000 1.494
S4.000 S08 0.905 1.143 0.000 2.047
S5.000 S13 0.769 0.896 0.000 1.665
S4.001 S10 0.973 2.758 0.000 3.731
S6.000 S11 0.147 0.126 0.000 0.273
S6.001 S12 1.148 0.304 0.000 1.452
S6.002 S13 1.131 0.639 0.000 1.770
S4.002 S14 1.357 0.138 0.000 1.496
S4.003 SSeparator 0.000 0.632 0.000 0.632
S7.000 S06 0.848 1.554 0.000 2.403
S8.000 S04 0.848 1.706 0.000 2.554
S9.000 S01 1.131 0.512 0.000 1.643
S9.001 S02 1.606 0.297 0.000 1.903
S9.002 S03 1.114 0.452 0.000 1.566
S8.001 S05 1.566 0.816 0.000 2.382
S7.001 S07 1.606 1.381 0.000 2.987
S4.004 S15 3.084 1.810 0.000 4.894
S4.005 S16 6.936 2.985 0.000 9.922
S4.006 SAttenuation 2 0.000 2.564 171.057 173.621
S3.002 S19 10.013 0.322 0.000 10.335
Total 37.597 21.978 171.057 230.632
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Summary of Critical Results by Maximum Level (Rank 1) for Storm
©1982-2018 Innovyze
Simulation Criteria
Areal Reduction Factor 1.000 Additional Flow - % of Total Flow 0.000
Hot Start (mins) 0 MADD Factor * 10m³/ha Storage 2.000
Hot Start Level (mm) 0 Inlet Coeffiecient 0.800
Manhole Headloss Coeff (Global) 0.500 Flow per Person per Day (l/per/day) 0.000
Foul Sewage per hectare (l/s) 0.000
Number of Input Hydrographs 0 Number of Storage Structures 1
Number of Online Controls 2 Number of Time/Area Diagrams 0
Number of Offline Controls 0 Number of Real Time Controls 0
Synthetic Rainfall Details
Rainfall Model FSR Ratio R 0.437
Region England and Wales Cv (Summer) 0.750
M5-60 (mm) 20.400 Cv (Winter) 0.840
Margin for Flood Risk Warning (mm) 300.0
Analysis Timestep 2.5 Second Increment (Extended)
DTS Status ON
DVD Status ON
Inertia Status ON
Profile(s) Winter
Duration(s) (mins) 15, 30, 60, 120, 240, 360, 480, 960, 1440
Return Period(s) (years) 2, 30, 100
Climate Change (%) 0, 0, 20
PN
US/MH
Name Storm
Return
Period
Climate
Change
First (X)
Surcharge
First (Y)
Flood
First (Z)
Overflow
Overflow
Act.
S3.000 S17 15 Winter 100 +20%
S3.001 S18 15 Winter 100 +20%
S4.000 S08 15 Winter 100 +20%
S5.000 S13 15 Winter 100 +20% 100/15 Winter
S4.001 S10 15 Winter 100 +20%
S6.000 S11 15 Winter 100 +20% 30/15 Winter
S6.001 S12 15 Winter 100 +20% 30/15 Winter
S6.002 S13 15 Winter 100 +20% 30/15 Winter
S4.002 S14 15 Winter 100 +20% 30/15 Winter
S4.003 SSeparator 15 Winter 100 +20%
S7.000 S06 15 Winter 100 +20%
S8.000 S04 15 Winter 100 +20%
S9.000 S01 15 Winter 100 +20% 30/15 Winter
S9.001 S02 15 Winter 100 +20% 30/15 Winter
S9.002 S03 15 Winter 100 +20%
S8.001 S05 15 Winter 100 +20% 30/15 Winter
S7.001 S07 15 Winter 100 +20%
S4.004 S15 15 Winter 100 +20%
S4.005 S16 30 Winter 100 +20% 30/15 Winter
S4.006 SAttenuation 2 30 Winter 100 +20% 100/15 Winter
HBPW LLP Page 5
43 Bridgegate
Retford
DN22 7UX
Date 15/05/2019 Designed by TS
File SL06107_rev 1_single st... Checked by EP
XP Solutions Network 2018.1.1
Summary of Critical Results by Maximum Level (Rank 1) for Storm
©1982-2018 Innovyze
PN
US/MH
Name
Water
Level
(m)
Surcharged
Depth
(m)
Flooded
Volume
(m³)
Flow /
Cap.
Overflow
(l/s)
Pipe
Flow
(l/s) Status
S3.000 S17 0.853 -0.062 0.000 0.85 32.5 OK
S3.001 S18 0.664 -0.116 0.000 0.47 32.8 OK
S4.000 S08 1.826 -0.119 0.000 0.45 32.3 OK
S5.000 S13 1.576 0.146 0.000 1.41 53.4 SURCHARGED
S4.001 S10 1.262 -0.093 0.000 0.69 97.2 OK
S6.000 S11 1.162 0.457 0.000 1.02 13.1 SURCHARGED
S6.001 S12 1.104 0.379 0.000 0.83 28.5 SURCHARGED
S6.002 S13 1.025 0.360 0.000 0.95 38.9 SURCHARGED
S4.002 S14 0.901 0.296 0.000 2.73 143.0 SURCHARGED
S4.003 SSeparator 0.503 -0.082 0.000 0.87 143.1 OK*
S7.000 S06 1.504 -0.086 0.000 0.68 48.4 OK
S8.000 S04 1.506 -0.084 0.000 0.69 43.1 OK
S9.000 S01 2.995 0.595 0.000 1.48 25.2 FLOOD RISK
S9.001 S02 2.349 0.199 0.000 1.47 24.3 SURCHARGED
S9.002 S03 1.912 -0.058 0.000 0.69 24.2 OK
S8.001 S05 1.123 0.228 0.000 1.62 62.6 SURCHARGED
S7.001 S07 0.697 -0.128 0.000 0.62 107.5 OK
S4.004 S15 0.020 -0.280 0.000 0.30 251.2 OK
S4.005 S16 -1.699 0.151 0.000 1.46 203.5 SURCHARGED
S4.006 SAttenuation 2 -1.725 0.182 0.000 0.38 63.9 SURCHARGED*
PN
US/MH
Name
Level
Exceeded
S3.000 S17
S3.001 S18
S4.000 S08
S5.000 S13
S4.001 S10
S6.000 S11
S6.001 S12
S6.002 S13
S4.002 S14
S4.003 SSeparator
S7.000 S06
S8.000 S04
S9.000 S01
S9.001 S02
S9.002 S03
S8.001 S05
S7.001 S07
S4.004 S15
S4.005 S16
S4.006 SAttenuation 2
HBPW LLP Page 6
43 Bridgegate
Retford
DN22 7UX
Date 15/05/2019 Designed by TS
File SL06107_rev 1_single st... Checked by EP
XP Solutions Network 2018.1.1
Summary of Critical Results by Maximum Level (Rank 1) for Storm
©1982-2018 Innovyze
PN
US/MH
Name Storm
Return
Period
Climate
Change
First (X)
Surcharge
First (Y)
Flood
First (Z)
Overflow
Overflow
Act.
Water
Level
(m)
S3.002 S19 30 Winter 100 +20% 30/15 Winter -1.652
PN
US/MH
Name
Surcharged
Depth
(m)
Flooded
Volume
(m³)
Flow /
Cap.
Overflow
(l/s)
Pipe
Flow
(l/s) Status
Level
Exceeded
S3.002 S19 0.463 0.000 1.08 55.0 SURCHARGED
DRAINAGE STRATEGY REPORT
Proposed Development at Alfred’s Way, Barking
May 2019, Issue 1
_________________________________________________________________________________________
SL06107 – Drainage Strategy Report – Issue 1 11
Appendix B
Drainage Strategy Drawing
Unit 7
FFL
+1.700m
Unit 8
FFL
+1.700mUnit 1
FFL
+3.150m
Unit 6
FFL
+2.150m
Unit 4
FFL
+2.150m
Unit 2
FFL
+2.150m
Unit 5
FFL
+2.150m
Unit 3
FFL
+2.150m
A13 A
LF
RE
D'S
W
AY
Motorcycle
Motorcycle
Motorcycle
225Ø
@ 1
:50
ACO1: 10m long channel S100
S030 constant invert units with
1No. sump units @ end
ACO2: 37m long
channel S100 S030
constant invert units
with 2No. sump units
@ 18.5m centres
ACO4: 22m long channel S100
S030 constant invert units with
2No. sump units @ 11m centres
SW
>
SW
>
SW
>
SW
>
RWP
RWP
RWP
RWP
RWP
RWP
RWP
RWP
RWP
RWP
RWP
RWP
RWP
RWP
RWP
RWP
RWP
RWP
SW
>
SW
>
SW
>
SW
>
SW
>
SW
>
FW
>
FW
>
FW
>
FW
>
SW
>
SW
>
SW
>
SW
>
SW
>
SW
>
SW
>
SW
>
SW
>
SW
>
SW
>
SW
>
SW
>
SW
>
SW
>
SW
>
S
W
>
SW
>
SW
>
SW
>
SW
>
SW
>
SW
>
SW
>
SW
>
SW
>
SW
>
SW
>
SW >
SW
>
SW > SW > SW > SW > SW > SW >
SW
>
SW
>
MHSW08
D400 Cover
1200Ø
CL: +2.520m
IL: +1.720m
F
W
>
F
W
>
F
W
>
MHSW10
D400 Cover
1200Ø
CL: +1.915m
IL: +1.055m
MHSW14
D400 Cover
1200Ø
Catchpit
CL: +1.505m
IL: +0.305m
300Ø
@ 1
:50
300Ø
@
1:1
50
225Ø
@
1:150
150Ø @ 1:150
MHSW13
D400 Cover
CL: +1.440m
IL: +0.440m
MHSW12
D400 Cover
CL: +1.515m
IL: +0.500m
ICSW11
D400 Cover
CL: +1.480m
IL: +0.555m
MHSW16
D400 Cover
1500Ø
Catchpit
CL: +1.625m
IL: -2.300m
Existing MHSW
CL: +1.710m
IL: +1.010m
IL: TBC
MHSW02
D400 Cover
1200Ø
CL: +3.420m
IL: +1.475m
MHSW01
D400 Cover
1200Ø
CL: +3.250m
IL: +2.250m
MHSW04
D400 Cover
1200Ø
CL: +2.115m
IL: +1.365m
MHSW06
D400 Cover
1200Ø
CL: +2.115m
IL: +1.365m
MHSW05
D400 Cover
1200Ø
CL: +2.055m
IL: +0.670m
225Ø
@
1:65
Attenuation 1
Attenuation 1
387m
2
x 3.0m deep attenuation system
using Geolight 400 attenuation units by
SDS LTD or similar (95% voids ratio),
providing a minimum of 180m³ site net
storage + 915m
3
displaced flood water
storage, to be installed in strict
accordance with manufacturer's details
Perforated 450Ø @ 1:300
MHSW19
D400 Cover
1800Ø
Packaged pumping chamber,
to pump at 55L/s
CL: +1.520m
IL: -2.415m
MHSW09
D400 Cover
1200Ø
CL: +1.885m
IL: +1.135m
225Ø
@
1:150
225Ø
@
1:150
100Ø @ 1:80
MHSW18
D400 Cover
1200Ø
CL: +1.690m
IL: +0.555m
SW >SW >
SW > SW > SW > SW > SW > SW >
SW > SW > SW > SW > SW >SW >
SW >
Existing MHSW
CL: +1.960m
IL: +1.060m
Existing MHSW
CL: +3.070m
IL: +1.380m
SW > SW > SW > SW >
S
W
>
S
W
>
FW
>
FW >FW >FW >FW >FW >
FW
>
FW
>
FW
>
FW
>
FW
>
FW
>
FW
>
FW
>
FW
>
FW >
FW >
FW >
FW >
FW
>
FW
>
150Ø @ 1:50
FW
>
FW
>
FW
>
FW
>
FW
>
FW
>
FW
>
FW
>
F
W
>
F
W
>
SW > SW >SW >
SW > SW >SW >
SW >SW > SW >
SW >SW > SW >
Headwall to Outfall,
details to be agreed and
consent obtained from EA
375Ø @ 1:445
MHSW
D400 Cover
1200Ø
CL: +1.520m
IL: +0.760m
375Ø @ 1:150
375Ø
375Ø @ 1:80
IL: TBC
ICFW01
D400 Cover
450Ø
CL: +1.650m
IL: +1.050m
ICFW02
D400 Cover
450Ø
CL: +1.665m
IL: +0.560m
100Ø
@
1:80
150Ø
@ 1
:150
150Ø
@ 1
:150
1
5
0
Ø
@
1
:
1
5
0
150Ø
@
1:40
100Ø
@
1:40
150Ø
@
1:40
100Ø
@
1:5
0
100Ø
@ 1
:80
MHFW
D400 Cover
Built over existing foul drain
CL: +3.250m
IL: -0.665m
Pumping station requirements:
· 0.5l/s discharge
· 5.0m
3
storage
· 3 phase power
· Lift from invert to discharge TBC
1
5
0
Ø
@
1
:
1
0
0
MHSW03
D400 Cover
1200Ø
CL: +2.805m
IL: +1.205m
150Ø @ 1:50
MHSW15
D400 Cover
1500Ø
Catchpit
Chamber fitted with
non-return valves
CL: +1.595m
IL: -0.145m
SW
>
SW
>
450Ø
225Ø @ 1:50
MHSW07
D400 Cover
1200Ø
CL: +1.945m
IL: +0.525m
PU
PU
PU
PU
PU
PU
PU
PU
PU
PU
PU
PU
PU
PU
PU
PU
SPEL P065/1CSC Class 1 full retention separator,
with alarm system - 2290m
2
catchment area.
Minimum 60l/s discharge rate required.
Manufacturer to advise on installation
specifications and alarm system location
Inlet IL: +0.275m
Outlet IL: +0.175m
S
W
>
S
W
>
S
W
>
S
W
>
S
W
>
S
W
>
S
W
>
S
W
>
Further investigation required to
ascertain upstream manhole
position and divert drainage
around proposed building
Existing open channel
replaced
with 375Ø drainage pipe
Existing river
MHFW10
D400 Cover
1200Ø
CL: +2.835m
IL: -0.285m
MHFW11
D400 Cover
1200Ø
CL: +3.470m
IL: -0.400m
ICFW09
D400 Cover
1200Ø
CL: +2.275m
IL: -0.180m
MHFW08
D400 Cover
1200Ø
CL: +1.890m
IL: +0.025m
ICFW04
D400 Cover
450Ø
CL: +2.090m
IL: +1.490m
ICFW05
D400 Cover
450Ø
CL: +2.090m
IL: +1.095m
ICFW06
D400 Cover
450Ø
CL: +2.090m
IL: +0.570m
MHFW07
D400 Cover
1200Ø
CL: +2.090m
IL: +0.265m
ICFW03
D400 Cover
450Ø
CL: +1.565m
IL: +0.280m
MHFW12
D400 Cover
1200Ø
CL: +3.450m
IL: -0.520m
150Ø
@
1:150
150Ø
@
1:150
SW
>
MHSW17
D400 Cover
1200Ø
CL: +1.665m
IL: +0.915m
A
0601
A
0601
17000
8000
15000
33500
300Ø
@
1:3
0
SW
>
SW
>
SW
>
SW
>
SW
>
SW
>
225Ø
@
1:1
50
REVISION TABLE
REV DESCRIPTION BY CHK APP DATE
P1 FIRST ISSUE TS EP EP 27/02/19
P2 LEVELS REVISED. DRAINAGE UPDATED TO SUIT TS EP EP 20/03/19
P3 LAYOUT UPDATED TO SUIT ARCHITECT DRAWINGS TS EP EP 22/03/19
P4 MINOR CHANGES TO UNIT 1 CAR PARK TS EP EP 08/04/19
CO
PY
RIG
HT
©
H
BP
W LLP
(2019)
0
10 20 30 40 50 60 70 80 90
100
MILLIMETERS AT ORIGINAL DRAWING SCALE
DOCUMENT REFERENCE NUMBER:
SIZE: REVISION:
HBPW PROJECT NUMBER:
DATE:
CHECKED: APPROVED:
PROJECT ENGINEER: DRAWN:
DRAWING:
PROJECT:
SUITABILITY:
CLIENT:
43 BRIDGEGATE
RETFORD
NOTTINGHAMSHIRE
DN22 7UX
TEL. (01777) 869896
www.hbpw.co.uk
SCALE:
SL06107
BARKING
PROPOSED DRAINAGE LAYOUT
EP TS
EP EP
27/02/19A1
1:200 S0 P4
SL06107-HBPW-00-ZZ-C-DR-600
PEAK WORKS
NOTES
1. DO NOT SCALE OFF THIS DRAWING.
2. SHOULD THERE BE ANY CONFLICT BETWEEN THE
DETAILS INDICATED ON THIS DRAWING AND
THOSE INDICATED ON OTHER DRAWINGS THE
ENGINEER SHOULD BE INFORMED PRIOR TO
CONSTRUCTION ON SITE.
3. ALL DRAWINGS ARE IN MILLIMETRES UNLESS
OTHERWISE STATED.
4. IT IS THE RESPONSIBILITY OF THE CONTRACTOR
TO EXECUTE THE WORKS AT ALL TIMES IN STRICT
ACCORDANCE WITH THE REQUIREMENTS OF THE
HEALTH AND SAFETY AT WORK ACT 1974 AND CDM
REGULATIONS 2015.
5. THIS DRAWING IS TO BE READ IN CONJUNCTION
WITH ALL OTHER RELEVANT DRAWINGS.
6. DRAINAGE TO BE IN ACCORDANCE WITH BUILDING
REGULATIONS PART H: DRAINAGE AND WASTE
DISPOSAL & RELEVANT BRITISH STANDARDS.
7. CONTRACTOR TO OBTAIN ANY NECESSARY
APPROVALS FROM THE WATER AUTHORITY PRIOR
TO OPERATION.
8. ANY POSITIONS OF RWPS AND FOUL CONNECTION
POINTS SHOWN ARE FOR INFORMATION ONLY
AND TO BE CONFIRMED BY OTHERS - REFER TO
ARCHITECTS DRAWINGS FOR SETTING OUT
INFORMATION. ALL RWPS TO BE FITTED WITH A
RODDING FACILITY LOCATED ABOVE GROUND
LEVEL.
9. COVER CLASS TO MANHOLES/INSPECTION
CHAMBERS ARE TO SUIT ANTICIPATED VEHICLE
LOADINGS IN ACCORDANCE WITH BS EN 124 (D400
WHERE POTENTIAL FOR HGV LOADING, C250/B125
IN FOOTWAY/LIGHTLY TRAFFICKED AREAS). A15
COVERS MAY BE USED ONLY IN AREAS NOT
ACCESSIBLE BY VEHICLES.
10. BEFORE HANDOVER, ALL MANHOLES SHALL BE
INSPECTED, ALL RUBBLE REMOVED, AND THE
WHOLE SYSTEM SHALL BE THOROUGHLY
FLUSHED AND CLEANED.
Proposed surface water drainageSW >
Proposed foul water drainageFW >
KEY
Existing foul water drainage
FW > FW >
Existing surface water drainage
SW > SW >
PU Denotes indicative foul water pop-up position. Location by others
Denotes indicative RWP position. Location by othersRWP
DRAINAGE STRATEGY REPORT
Proposed Development at Alfred’s Way, Barking
May 2019, Issue 1
_________________________________________________________________________________________
SL06107 – Drainage Strategy Report – Issue 1 12
Appendix C
Correspondence from Thames Water
Thames Water Utilities Ltd Property Searches, PO Box 3189, Slough SL1 4WW DX 151280 Slough 13
[email protected] www.thameswater-propertysearches.co.uk
0845 070 9148
HBPW H B P W LLP 43 BRIDGEGATE RETFORD DN22 7UX
Search address supplied Peak Works 1 Alfreds Way Alfreds Way Industrial Estate Barking IG11 0AS
Your reference Peak works Our reference ALS/ALS Standard/2018_3923736 Search date 11 December 2018
Keeping you up-to-date Notification of Price Changes From 1 September 2018 Thames Water Property Searches will be increasing the price of its Asset Location Search in line with RPI at 3.23%. For further details on the price increase please visit our website: www.thameswater-propertysearches.co.uk Please note that any orders received with a higher payment prior to the 1 September 2018 will be non-refundable.
Thames Water Utilities Ltd, Property Searches, PO Box 3189, Slough SL1 4WW, DX 151280 Slough 13
T 0845 070 9148 E [email protected] I www.thameswater-propertysearches.co.uk
Page 2 of 10
Search address supplied: Peak Works, 1, Alfreds Way, Alfreds Way Industrial Estate, Barking, IG11 0AS Dear Sir / Madam An Asset Location Search is recommended when undertaking a site development.It is essential to obtain information on the size and location of clean water and sewerage assets to safeguard against expensive damage and allow cost-effective service design. The following records were searched in compiling this report: - the map of public sewers & the map of waterworks. Thames Water Utilities Ltd (TWUL) holds all of these. This searchprovides maps showing the position, size of Thames Water assets close to the proposed development and also manhole cover and invert levels, where available. Please note that none of the charges made for this report relate to the provision of Ordnance Survey mapping information. The replies contained in this letter are given following inspection of the public service records available to this company. No responsibility can be accepted for any error or omission in the replies. You should be aware that the information contained on these plans is current only on the day that the plans are issued. The plans should only be used for the duration of the work that is being carried out at the present time. Under no circumstances should this data be copied or transmitted to parties other than those for whom the current work is being carried out. Thames Water do update these service plans on a regular basis and failure to observe the above conditions could lead to damage arising to new or diverted services at a later date. Contact Us If you have any further queries regarding this enquiry please feel free to contact a member of the team on 0845 070 9148, or use the address below: Thames Water Utilities Ltd Property Searches PO Box 3189 Slough SL1 4WW Email: [email protected] Web: www.thameswater-propertysearches.co.uk
Thames Water Utilities Ltd, Property Searches, PO Box 3189, Slough SL1 4WW, DX 151280 Slough 13
T 0845 070 9148 E [email protected] I www.thameswater-propertysearches.co.uk
Page 3 of 10
Waste Water Services
Please provide a copy extract from the public sewer map. Enclosed is a map showing the approximate lines of our sewers. Our plans do not show sewer connections from individual properties or any sewers not owned by Thames Water unless specifically annotated otherwise. Records such as "private" pipework are in some cases available from the Building Control Department of the relevant Local Authority. Where the Local Authority does not hold such plans it might be advisable to consult the property deeds for the site or contact neighbouring landowners. This report relates only to sewerage apparatus of Thames Water Utilities Ltd, it does not disclose details of cables and or communications equipment that may be running through or around such apparatus. The sewer level information contained in this response represents all of the level data available in our existing records. Should you require any further Information, please refer to the relevant section within the 'Further Contacts' page found later in this document. For your guidance: • The Company is not generally responsible for rivers, watercourses, ponds, culverts
or highway drains. If any of these are shown on the copy extract they are shown for information only.
• Any private sewers or lateral drains which are indicated on the extract of the public sewer map as being subject to an agreement under Section 104 of the Water Industry Act 1991 are not an ‘as constructed’ record. It is recommended these details be checked with the developer.
Clean Water Services
Please provide a copy extract from the public water main map. With regard to the fresh water supply, this site falls within the boundary of another water company. For more information, please redirect your enquiry to the following address: Essex & Suffolk Water PO Box 292 Durham
Thames Water Utilities Ltd, Property Searches, PO Box 3189, Slough SL1 4WW, DX 151280 Slough 13
T 0845 070 9148 E [email protected] I www.thameswater-propertysearches.co.uk
Page 4 of 10
DH1 9TXX Tel: 0845 782 0111 Fax: 0191 301 6202 For your guidance: • Assets other than vested water mains may be shown on the plan, for information
only. • If an extract of the public water main record is enclosed, this will show known public
water mains in the vicinity of the property. It should be possible to estimate the likely length and route of any private water supply pipe connecting the property to the public water network.
Payment for this Search A charge will be added to your suppliers account.
Thames Water Utilities Ltd, Property Searches, PO Box 3189, Slough SL1 4WW, DX 151280 Slough 13
T 0845 070 9148 E [email protected] I www.thameswater-propertysearches.co.uk
Page 5 of 10
Further contacts:
Waste Water queries
Should you require verification of the invert levels of public sewers, by site measurement, you will need to approach the relevant Thames Water Area Network Office for permission to lift the appropriate covers. This permission will usually involve you completing a TWOSA form. For further information please contact our Customer Centre on Tel: 0845 920 0800. Alternatively, a survey can be arranged, for a fee, through our Customer Centre on the above number. If you have any questions regarding sewer connections, budget estimates, diversions, building over issues or any other questions regarding operational issues please direct them to our service desk. Which can be contacted by writing to:
Developer Services (Waste Water) Thames Water Clearwater Court Vastern Road Reading RG1 8DB Tel: 0800 009 3921 Email: [email protected]
Clean Water queries Should you require any advice concerning clean water operational issues or clean water connections, please contact:
Developer Services (Clean Water) Thames Water Clearwater Court Vastern Road Reading RG1 8DB
Tel: 0800 009 3921 Email: [email protected]
Thames Water Utilities Ltd, Property Searches, PO Box 3189, Slough SL1 4W, DX 151280 Slough 13
T 0845 070 9148 E [email protected] I www.thameswater-propertysearches.co.uk
Page 6 of 10
Asset Location Search Sewer Map - ALS/ALS Standard/2018_3923736
The width of the displayed area is 500 m and the centre of the map is located at OS coordinates 546391,183605 The position of the apparatus shown on this plan is given without obligation and warranty, and the accuracy cannot be guaranteed. Service pipes are not shown but their presence should be anticipated. No liability of any kind whatsoever is accepted by Thames Water for any error or omission. The actual position of mains and services must be verified and established on site before any works are undertaken.
Based on the Ordnance Survey Map with the Sanction of the controller of H.M. Stationery Office, License no. 100019345 Crown Copyright Reserved.
150
525
150
150
375
300
225
300
840
225
225
225
225
150
225
760
525
750
150
225
300
838
225
225
300
225
150
225
375
225
225
750
375
150
225
750
525
150
225
!
!
!
1
UU
U
U
U
.
1
U
%
%
%
%
%%
%
%
%
%
%
%
%
%%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
4611
1603
3605
3701
5802
6801
2604
4614
26033606
5803
6607
5601
4613
6701
4609
2602
5604
1602
4602
3608
5614
6704
5602
5603
5808
5606
4607
4612
6702
4802
2601
3607
3603
4610
1501
4704
4608
5801
6604
5804
5701
1601
4703
4605
4702
4801
6603
5605
4606
3604
351B
4701
581A
351A
671A
671B
571A
561D461B
351C
471C
581C
471A
561E
581D
4604
3602
481C
461D461C
571B
671J
!
=
=
==
=
!
=
=
==
=
=
=
=
=
==
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!
=
=
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= =
=
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= =
=
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=
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3
17
2
65
9
Works
London Works
11
A1
27
13
32
26
17
35
21
33
18
143840
22
34
25
28
10
31
39
Drain
B2B
1
A2
C1
C3
451
482
541 557
469
518
472
516
551
515
506
531
455
547
466
494
501
449
529
565
Castle Heights
WB
Chy
CR
Eastern Approach
Th
e T
ha
tch
ed
Ho
use
Tank
RIPPLE ROAD
LOD
GE
AV
EN
UE
Mast
MO
OR
E C
RE
SC
EN
T
Tanks
Depot
1 to 1011 to 26
Tunnels
27 to 36
Ward Bdy
El Sub Sta
El S
ub
Sta
3
Eastern Approach
Works
26
El Sub Sta
34
Drain
1
2
1
Drain
Tank
Works
2
Dra
in
21
14
1
Dra
in
El Sub Sta
48
11
7.0m
7.0m
4.3m
24
20
37
23
19
36
16
30
12
29
15
The Invicta Centre
CA
ST
LE
RO
AD
(PH
)
AM AND BARKING BY-PASS)
33
7
Thames Water Utilities Ltd, Property Searches, PO Box 3189, Slough SL1 4W, DX 151280 Slough 13
T 0845 070 9148 E [email protected] I www.thameswater-propertysearches.co.uk
Page 7 of 10
NB. Levels quoted in metres Ordnance Newlyn Datum. The value -9999.00 indicates that no survey information is available
Manhole Reference Manhole Cover Level Manhole Invert Level 6701 6705 6605 6704 6702 6706 6707 4704 5701 6703 671J 471C 4802 5808 581D 4801 581A 5801 5802 5803 6801 581C 481C 3602 3701 4611 4610 471A 4602 4701 4613 4614 4703 4606 461D 4702 461C 4604 461B 4605 5601 571B 561D 571A 561E 5602 6603 6604 671A 671B 5614 5604 5606 5605 6607 6601 6602 3607 351B 351A 3606 351C 4609 4608 4607 4612 5603 1501 1601 2604 1602 1603 3608 2603 3603 2601 2602 3604 3605
5.61 n/a 4.33 6.15 6.35 6.29 6.75 6.35 6.86 6.79 n/a n/a 6.85 7.06 n/a 6.85 n/a 7.22 7.11 7.16 6.89 n/a n/a 4.822 4.77 5.03 4.18 n/a 4.74 5.37 4.56 4.43 5.5 4.43 n/a 6.24 n/a 3.87 n/a 3.74 3.78 n/a n/a n/a n/a 4.05 4.33 4.34 n/a n/a 4.22 4.16 4.27 4.16 4.2 4.37 4.61 3.15 n/a n/a 3.32 n/a 3.75 3.83 3.69 3.82 3.78 1.95 2.3 2.51 2.3 2.39 3.01 2.9 3.36 3.64 4.05 3.89 3.97
3.76 n/a n/a 3.7 3.64 4.68 5.03 n/a 5.89 3.58 n/a n/a n/a 5.66 n/a n/a n/a n/a 5.36 5.35 3.44 n/a n/a -.162 3.22 2.64 2.14 n/a 2.95 n/a n/a n/a n/a 3.23 n/a n/a n/a n/a n/a 2.57 2.35 n/a n/a n/a n/a 2 n/a 3.21 n/a n/a n/a 1.21 2.07 1.97 1.69 2.32 n/a 1.8 n/a n/a 2.42 n/a 1.78 1.64 1.54 2.74 2.43 n/a n/a 1.13 n/a n/a n/a 1.44 1.82 1.16 1.45 2.81 3.11
The position of the apparatus shown on this plan is given without obligation and warranty, and the accuracy cannot be guaranteed. Service pipes are not shown but their presence should be anticipated. No liability of any kind whatsoever is accepted by Thames Water for any error or omission. The actual position of mains and services must be verified and established on site before any works are undertaken.
Thames Water Utilities Ltd, Property Searches, PO Box 3189, Slough SL1 4W, DX 151280 Slough 13
T 0845 070 9148 E [email protected] I www.thameswater-propertysearches.co.uk
Page 8 of 10
ALS Sewer Map Key
Foul: A sewer designed to convey waste water from domestic andindustrial sources to a treatment works.
Surface Water: A sewer designed to convey surface water (e.g. rainwater from roofs, yards and car parks) to rivers or watercourses.
Combined: A sewer designed to convey both waste water and surfacewater from domestic and industrial sources to a treatment works.
Trunk Surface Water
Storm Relief
Vent Pipe
Proposed Thames SurfaceWater Sewer
Gallery
Surface Water RisingMain
Sludge Rising Main
Vacuum
Public Sewer Types (Operated & Maintained by Thames Water)
Notes:
1) All levels associated with the plans are to Ordnance Datum Newlyn.
2) All measurements on the plans are metric.
3) Arrows (on gravity fed sewers) or flecks (on rising mains) indicate direction offlow.
4) Most private pipes are not shown on our plans, as in the past, this information hasnot been recorded.
5) ‘na’ or ‘0’ on a manhole level indicates that data is unavailable.
Trunk Foul
Trunk Combined
Bio-solids (Sludge)
Proposed Thames WaterFoul Sewer
Foul Rising Main
Combined Rising Main
Proposed Thames WaterRising Main
Sewer FittingsA feature in a sewer that does not affect the flow in the pipe. Example: a ventis a fitting as the function of a vent is to release excess gas.
Operational ControlsA feature in a sewer that changes or diverts the flow in the sewer. Example:A hydrobrake limits the flow passing downstream.
Air Valve
Dam Chase
Fitting
Meter
Vent Column
Control Valve
Drop Pipe
Ancillary
Weir
End ItemsEnd symbols appear at the start or end of a sewer pipe. Examples: anUndefined End at the start of a sewer indicates that Thames Water has noknowledge of the position of the sewer upstream of that symbol, Outfall on asurface water sewer indicates that the pipe discharges into a stream or river.
Outfall
Undefined End
Inlet
Other SymbolsSymbols used on maps which do not fall under other general categories
Summit
Public/Private Pumping Station/
Invert Level
Change of characteristic indicator (C.O.C.I.)
Other Sewer Types (Not Operated or Maintained by Thames Water)
Areas
Lines denoting areas of underground surveys, etc.
Agreement
Chamber
Operational Site
Conduit Bridge
Foul Sewer
Combined Sewer
Culverted Watercourse
Surface Water Sewer
Gulley
Proposed
Abandoned Sewer
Tunnel
6) The text appearing alongside a sewer line indicates the internal diameter ofthe pipe in milimetres. Text next to a manhole indicates the manholereference number and should not be taken as a measurement. If you areunsure about any text or symbology present on the plan, please contact amember of Property Insight on 0845 070 9148.
P P
M
W
Terms and Conditions
Thames Water Utilities Ltd, Property Searches, PO Box 3189, Slough SL1 4W, DX 151280 Slough 13
T 0845 070 9148 E [email protected] I www.thameswater-propertysearches.co.uk
Page 9 of 10
All sales are made in accordance with Thames Water Utilities Limited (TWUL) standard terms and conditions unless previously agreed in writing.
1. All goods remain in the property of Thames Water Utilities Ltd until full payment is received. 2. Provision of service will be in accordance with all legal requirements and published TWUL policies. 3. All invoices are strictly due for payment 14 days from due date of the invoice. Any other terms must
be accepted/agreed in writing prior to provision of goods or service, or will be held to be invalid. 4. Thames Water does not accept post-dated cheques-any cheques received will be processed for
payment on date of receipt. 5. In case of dispute TWUL`s terms and conditions shall apply. 6. Penalty interest may be invoked by TWUL in the event of unjustifiable payment delay. Interest
charges will be in line with UK Statute Law ‘The Late Payment of Commercial Debts (Interest) Act 1998’.
7. Interest will be charged in line with current Court Interest Charges, if legal action is taken. 8. A charge may be made at the discretion of the company for increased administration costs.
A copy of Thames Water’s standard terms and conditions are available from the Commercial Billing Team ([email protected]). We publish several Codes of Practice including a guaranteed standards scheme. You can obtain copies of these leaflets by calling us on 0800 316 9800 If you are unhappy with our service you can speak to your original goods or customer service provider. If you are not satisfied with the response, your complaint will be reviewed by the Customer Services Director. You can write to her at: Thames Water Utilities Ltd. PO Box 492, Swindon, SN38 8TU. If the Goods or Services covered by this invoice falls under the regulation of the 1991 Water Industry Act, and you remain dissatisfied you can refer your complaint to Consumer Council for Water on 0121 345 1000 or write to them at Consumer Council for Water, 1st Floor, Victoria Square House, Victoria Square, Birmingham, B2 4AJ.
Ways to pay your bill
Credit Card Call 0845 070 9148 quoting your invoice number starting CBA or ADS / OSS
BACS Payment Account number 90478703 Sort code 60-00-01 A remittance advice must be sent to: Thames Water Utilities Ltd., PO Box 3189, Slough SL1 4WW. or email [email protected]
Telephone Banking By calling your bank and quoting: Account number 90478703 Sort code 60-00-01 and your invoice number
Cheque Made payable to ‘Thames Water Utilities Ltd’ Write your Thames Water account number on the back. Send to: Thames Water Utilities Ltd., PO Box 3189, Slough SL1 4WW or by DX to 151280 Slough 13
Thames Water Utilities Ltd Registered in England & Wales No. 2366661 Registered Office Clearwater Court, Vastern Rd, Reading, Berks, RG1 8DB.
Thames Water Utilities Ltd, Property Searches, PO Box 3189, Slough SL1 4W, DX 151280 Slough 13
T0845 070 [email protected] I www.thameswater-propertysearches.co.uk
Page 10 of 10
Search Code IMPORTANT CONSUMER PROTECTION INFORMATION This search has been produced by Thames Water Property Searches, Clearwater Court, Vastern Road, Reading RG1 8DB, which is registered with the Property Codes Compliance Board (PCCB) as a subscriber to the Search Code. The PCCB independently monitors how registered search firms maintain compliance with the Code. The Search Code:
• provides protection for homebuyers, sellers, estate agents, conveyancers and mortgage lenders who rely on the information included in property search reports undertaken by subscribers on residential and commercial property within the United Kingdom
• sets out minimum standards which firms compiling and selling search reports have to meet • promotes the best practise and quality standards within the industry for the benefit of consumers and
property professionals • enables consumers and property professionals to have confidence in firms which subscribe to the
code, their products and services. By giving you this information, the search firm is confirming that they keep to the principles of the Code. This provides important protection for you. The Code’s core principles Firms which subscribe to the Search Code will:
• display the Search Code logo prominently on their search reports • act with integrity and carry out work with due skill, care and diligence • at all times maintain adequate and appropriate insurance to protect consumers • conduct business in an honest, fair and professional manner • handle complaints speedily and fairly • ensure that products and services comply with industry registration rules and standards and relevant
laws • monitor their compliance with the Code
Complaints If you have a query or complaint about your search, you should raise it directly with the search firm, and if appropriate ask for any complaint to be considered under their formal internal complaints procedure. If you remain dissatisfied with the firm’s final response, after your complaint has been formally considered, or if the firm has exceeded the response timescales, you may refer your complaint for consideration under The Property Ombudsman scheme (TPOs). The Ombudsman can award compensation of up to £5,000 to you if he finds that you have suffered actual loss as a result of your search provider failing to keep to the Code. Please note that all queries or complaints regarding your search should be directed to your search provider in the first instance, not to TPOs or to the PCCB. TPOs Contact Details The Property Ombudsman scheme Milford House 43-55 Milford Street Salisbury Wiltshire SP1 2BP Tel: 01722 333306 Fax: 01722 332296 Email: [email protected] You can get more information about the PCCB from www.propertycodes.org.uk PLEASE ASK YOUR SEARCH PROVIDER IF YOU WOULD LIKE A COPY OF THE SEARCH CODE
Thames Water Utilities Limited – Registered Office: Clearwater Court, Vastern Road, Reading RG1 8DB
Company number 02366661. VAT registration no GB 537-4569-15
Mr Emyr Parry HBPW LLP 43 Bridgegate, Retford, Nottinghamshire, DN22 7UX
14 December 2018
Pre-planning enquiry: Capacity Confirmation
Dear Emyr,
Thank you for providing information on your development.
Site: Peak Works, 1 Alfreds Way, Barking, Essex - IG11 0AS
Existing site: Industrial unit (1,536 m2).
Existing foul water discharge by gravity into manhole MH3602.
Proposed site: Industrial unit (2,735m2).
Proposed foul water discharge by gravity into manhole MH3602.
Proposed surface water discharge to nearby watercourse and not to Thames Water Sewer.
We’re pleased to confirm that there will be sufficient foul water capacity in our sewerage network
to serve your development.
This confirmation is valid for 12 months or for the life of any planning approval that this
information is used to support, to a maximum of three years.
You’ll need to keep us informed of any changes to your design – for example, an increase
in the number or density of homes. Such changes could mean there is no longer
sufficient capacity.
What happens next?
Please make sure you submit your connection application, giving us at least 21 days’ notice of
the date you wish to make your new connection/s.
If you’ve any further questions, please contact me on 020 3577 7608.
Yours sincerely
Zaid Kazi
Development Engineer
Developer Services – Sewer Adoptions Team
DS6056268
DRAINAGE STRATEGY REPORT
Proposed Development at Alfred’s Way, Barking
May 2019, Issue 1
_________________________________________________________________________________________
SL06107 – Drainage Strategy Report – Issue 1 13
Appendix D
Existing site Topography survey and buried services survey
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
1
0
0MH
0.85d
1
0
0
G
G
RWP
G
G
RWP
1
0
0
1
0
0
1
0
0
1
0
0
MH
0.40d
Silted
1
5
0
O
S
A
RWP
1
0
0
MH
0.72d
1
0
0
MH
1.20d
1
5
0
MH
0.90d
1
0
0
1
5
0
1
0
0
MH
0.70d
O
p
e
n
C
h
a
n
n
e
l
O
S
A
A
R
G
UTT
G
UTT
A
R
AR
A
R
MH
1.42d
UTS
Flooded
Interceptor
No pipes visible
Flooded
Vent
UTT
1
5
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
5
0
1
0
0
150
1
5
0
O
S
A
MH
0.52dMH
0.59d
1
0
0
MH
0.91d
MH
1.33d
MH
1.45d
E
E
E
E
E
E
E
E
E
E
E
E
E
0
.4
0
d
Key Pad
Control
E
E
E
E
E
E
E
E
CR
0
.2
5
d
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
1
.
2
0
d
0
.5
4
d
O
S
A
E
E
E
E
E
0
.
5
7
d
G
P
R
G
P
R
G
P
R
G
P
R
G
P
R
G
P
R
G
P
R
G
P
R
GP
R
G
P
R
G
P
R
0
.6
0
d
O
S
A
G
A
S
G
A
S
G
A
S
G
A
S
G
A
S
G
A
S
G
A
S
G
A
S
G
A
S
G
A
S
G
A
S
GR
0
.6
0
d
0
.6
0
d
O
S
A
G
P
R
G
P
R
G
P
R
G
P
R
G
P
R
0
.7
0
d
O
S
A
B
T
B
T
B
T
B
T
0
.5
5
d
O
S
A
CR
IC
W
W
W
W
W
W
WM
SV
SV
SV
SV
1
.0
0
d
1
.
0
0
d
O
S
A
G
A
S
G
A
S
G
A
S
G
A
S
G
A
S
G
A
S
G
A
S
G
A
S
0
.9
0
d
BH01
BH02
BH03
BH04
BH05
BH06
BH07
BH08
BH09
BH10
Building
Building
Building
Building
Building
Building
Building
Electricity
Foul Drainage
Fuel Line
Ventilation
Gauge Line
Offset Fill-Line
Compressed Air
Cable Television
Combined Drainage
Surface Drainage
British Telecom
Close Circuit Television
Telemetry
Fibre Optics
Unknown
Do Not Drill / Banded Pipes
Borehole
Water
Gas
LEGEND
Vapour RecoveryVR VR
U U U
FO FO FO
T T T T T
GL GL GL
cctv cctv cctv
BT BT BT
F F F F
V V V
OFL OFL OFL
A A A
CATV CATV CATV
GAS GAS GAS
E E E E
W W W W
Electricity High VoltageHV HV HV
CommunicationCOMMS COMMS
Oil PipeOIL OIL OIL
PipePIPE PIPE PIPE
End Of Trace
Trial Pit Location
T*
* - W= Water
F=Foam
TANK
P=Product
U=Unknown
C=Concrete
Scale
Client
GDP
1 Alfreds WayBarking, IG11 0AS
Site Location
1:200@ A1
Drawn byA.B.
Sheet No. 1 of 1
Drawing No. 0718-GDP-6097 Revision A
General Notes:Please note ground penetrating radar depths areapproximate.
DISCLAIMER: The location of under ground services shown on this drawing has been determined using electro-magnetic (and/or ground probing radar, where requested) techniques and visual observations. the limitations of this drawing should be realised and no guarantee can be given that all services have been identified. This drawing may not include the location of all public services that may cross the site and therefore the relevant service drawings
should be obtained from the appropriate utility company and used in conjunction with this drawing. Additional services, structures or other below ground obstructions not indicated on this drawing may be present on site. reference should be made to historical plans and as built drawings. Excavations in the vicinity of services should be carried out with due diligence ref: HSG47 document "avoiding dangers from underground services". Location accuracy is
determined by refering to manufacturers guidelines for the systems deployed. Reference should be made to the latest version of AMS Ltd site procedures document for utility location surveys Please note ground penetrating radar depths are approximate only.
Date01-08-18
Surveyed byR.J.
Approved by-
Excavated AreaWindow Sample
Electricity Low VoltageLV LV LV
Ground Probing RadarGPR GPR GPR
FenceO O O O
Edge of CanopyEOC EOC EOC
Overhead Service
Rain Water Pipe
Pipe Riser
Off Survey Area
Unable to Locate
Unable to Raise
Unable to Trace
Vapour Recovery
Taken From Records
Unable to Survey
Rodding Eye
Vent Pipe
Soakaway
Stop Tap
Sluice Valve
Traffic Sensor
Water Meter
Soil Vent Pipe
Soil Vapour Sample
Road Sign
British Telecom Box
British Telecom Cover
Assumed Route
Fire Hydrant
Gas Valve
Inspection Cover
Lighting Column
Manhole Cover
Cover Level
Down Pipe
Earth Rod
Electricity IC
Electricity Pole
End of Trace
Catch Pit
Depth (in metres)
Cable Riser
GV
G
EIC
EP
EOT
FH
IC
LC
MH
Gully
BO
BH
BTB
BTIC
AR
Bollard
Borehole
Co
CL
DP
ER
CATV
CP
d
Concrete
Cable TV
CR
TS
UTL
UTR
UTT
VR
VP
UTS
WM
OH
PR
P
RWP
RS
OSA
Post
RE
S/A
ST
SV
TFR
SVP
SVS
MW Monitoring Well
TL Traffic Light
SL Spot Light
C/BOX Control Box
BO/ILL Illuminated Bollard
U/S Underside
F/BED Flower Bed
RET WALL Retaining Wall
S/BIRCH Silver Birch
H/THORN Hawthorn
CON Conifer
SAP Sapling
TBM Temporary Bench Mark
OSBM Ordnance Survey Bench Mark
C/B FENCE Closeboard Fence
SEC FENCE Security Fence
P&R FENCE Post & Rail Fence
H/CHESTNUT Horse Chestnut
HT Height
WFC Water Filled Chamber
D/CHAN Drainage Channel
WP Waste Pipe
FS Fire Switch
G/RUN Gully Run
SP Soil Pipe
ABBREVIATIONS
IL Invert Level
Ø Pipe Diameter
WR Water Riser
Edge of CanopyEOC
GPR Ground Probing Radar
INT Interceptor
WS Window Sample
No Pipes VisibleNPV
KO Kerb Outlet
Poulton & Graf
Lamp PostLP
Telegraph PoleTP
32 Doncaster Road, Barnsley, South Yorkshire, S70 1TL.Tel: 01226 292 377 Mobile: 07969 360287
E-Mail: [email protected] & [email protected]: www.avoinmaasurveys.com
Gully RunG-RUN G-RUN
Soil Vapour Sample
Lamp HoleLH
have been surveyed where possible.
Eaves and ridge heights of surrounding buildings
and traced where possible.
are indicative only.
Drainage has been surveyed where found,
All trees are identified where possible.
Species, spread, height and girth
Notes
Hook Survey Legend
Banking
Hedge
Undergrowth
Tree
Bush
Telephone line
Power line
Contour line
Building
Open Building
Glass Building Gate
Survey Station
Level
Ordnance Survey Benchmark
Foul Drainage
Storm Drainage
Abbreviations
Air Valve
Borehole
Bus Stop
Cover Level
Fire Hydrant
Inspection Cover
Electricity Pole
Invert Level
Lamp Post
Manhole
Marker
LP
MH
MK
RNPName Plate
Road Sign RS
Rodding Eye RE
RSJReinforced Steel Joint
Animal Sett Sett
Stop Valve SV
Survey Station STN
TPTelegraph Pole
Tree Stump Stump
THTrial Hole
Unable To Lift UTL
Vent Pipe VP
SVPSoil Vent Pipe
Rain water Pipe RWP
Power Pole PP
IL
IC
FH
EP
CL
BH
AV
BS
Water Valve WV
The Copyright of these Plans shall remain vested with Hook Survey Partnership who will grant an
Copyright 2018 Hook Survey Partnership
C
irrevocable licence for use by the Client once payment has been received in full. No Third Party
may use the plans even if payment has been made to the Client but not received by the Company.
Please see our terms and conditions of supply at www.hooksurvey.com for further details.
Earth Rod ER
Scale
0 5
Metres
10
Grid & Levels related to :
1:200
Topographical Survey
Drawing title :
S18/6733
Newable Property Developments Ltd
Peak Works, Alfred's Way,
BARKING IG11 0AS
Job No. :
Scale :
Client :
Project :
Revision :
Drawn by :
Dwg No. :
Date :
S18/6733/01
October 2018 N.B.
-
Head Office
Unit 1, Bybow Farm
Orchard Way
Dartford, Kent
DA2 7ER
Email > [email protected]
Tel > 01322 277221
Midlands Office
54 Stratford Road
Shipston on Stour
Warwickshire
CV36 4AZ
Email > [email protected]
Tel > 01608 430346
www.hooksurvey.com
Land & Building Surveyorswww.hooksurvey.com
HOOK SURVEYPARTNERSHIP
defined by Geoid model OSTN15, based around 2 survey stations
Ordnance Survey (OSGB36) coordinate system and level data
H1 & H2 with a scale factor of 1.00000
Indicative
Stn Easting Northing Height
Survey control
H1 546418.094 183536.235 1.543
H10 546368.435 183635.243 3.413
H11 546430.265 183642.827 3.959
H12 546397.323 183659.090 3.868
H2 546445.666 183534.781 1.362
H3 546435.722 183585.297 1.767
H4 546428.875 183632.543 3.076
H5 546402.769 183635.038 3.459
H6 546381.484 183621.063 2.920
H7 546395.484 183572.665 1.706
H8 546407.896 183570.972 1.560
H9 546414.361 183551.969 1.542
PRIORITY PLUMBING
T
R
U
L
IN
E
P
A
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of broken glass, therefore some details may be missing.
The site has materials stored in various places and also areas
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