London Borough of Barnet, Planning
Services,
Barnet House,
1255 High Road,
London N20 0EJ
Tel: 0208 359 3000
Email: planning.enquiry@barnet.gov.uk

Sustainable Drainage Systems Assessment Form for
Full Applications and Reserved Matters Applications
Advice Note
1. As of 6th April 2015 Sustainable Drainage Systems (SuDS) are required for the management of surface water runoff
on planning applications relating to Major Development – developments of 10 dwellings or more or equivalent nonresidential or mixed development (as set out in Article 2(1) of the Town and Country Planning (Development
Management Procedure) (England) Order 2015)1 – unless demonstrated to be inappropriate.
2. SuDS planning policy and guidance includes the Department for Communities and Local Government Written
Ministerial Statement of 18 December 2014 2; Planning Practice Guidance3; the London Plan4, the Non-statutory
Technical Standards for Sustainable Drainage Systems5, and the SuDS Manual (C753) 6.
3. Surface water must be managed in accordance with the surface water discharge hierarchy for discharge
destinations. The aim of the surface water discharge hierarchy is to ensure that surface water runoff is treated asa resource and managed in a way which minimises the negative impact of the proposed development on flood risk
and the water quality of receiving waters. Early consideration must be given to the use of rainwater harvesting
systems and / or the use of green roofs, to both manage surface water runoff and deliver a source of non-potablewater for the proposed development where practical. Multiple discharge locations can be selected as applicable(supported by Approved Document Part H of the Building Regulations, 2010).
4. The surface water drainage strategy for the proposed development must be accompanied by evidence of Adopting
Body(ies) accepting responsibility for the safe operation and maintenance of the proposed SuDS. It must be notedthat both Thames Water and the London Borough of Barnet will only adopt SuDS under exceptional circumstances.
The Adopting Body must demonstrate that sufficient funds have been held in reserve or will be raised to meet theoperation and maintenance expense throughout the lifespan of the development. The Adopting Body shall be
responsible for satisfying themselves of the suitability of the adopted SuDS prior to adoption, and shall keep recordsof operation and maintenance activities, for possible inspection by the Council.
5. Applicants are strongly advised to discuss their proposals with the London Borough of Barnet at the pre-application
stage to ensure that an acceptable SuDS scheme is submitted (please note that additional pre-application fees
may apply)7.

Publication of Applications on Planning Authority Websites
Please note that the information provided on this application form and in supporting documents may be published on the
Authority’s website. If you require any further clarification, please contact the Authority’s planning department.

1 http://www.legislation.gov.uk/uksi/2015/596/pdfs/uksi_20150596_en.pdf.
2 https://www.gov.uk/government/speeches/sustainable-drainage-systems
3 http://planningguidance.planningportal.gov.uk/blog/guidance/flood-risk-and-coastal-change/reducing-the-causes-and-

impacts-of-flooding/why-are-sustainable-drainage-systems-important/
4 https://www.london.gov.uk/what-we-do/planning/london-plan/current-london-plan
5 https://www.gov.uk/government/publications/sustainable-drainage-systems-non-statutory-technical-standards
6 http://www.ciria.org/Memberships/The_SuDs_Manual_C753_Chapters.aspx
7 https://www.barnet.gov.uk/citizen-home/planning-conservation-and-building-control/forms/Request-for-pre-applicationplanning-advice.html

Published: September 2016
Revision version – 002

1

1. Details of Proposed Development
Site Details

Applicant Response

Name of proposeddevelopment
Grid Reference
Street Address
Town/City
Postcode
Description of the
proposal
Total proposeddevelopment area (ha)Existing use
Proposed use

2. Development TypeIs the planning application a Major Development?
⃝ Yes

⃝ No

Major Development is classified in the Article 2(1) of the Town and Country Planning (Development Management Procedure) (England)
Order 2015 as development with at least one of the following categories:a) The winning and working of minerals or the use of land for mineral-working deposits;b) Waste development;c) The provision of dwelling houses wherei. The number of dwelling houses to be provided is 10 or more; orii. The development is to be carried out on a site having an area of 0.5 hectares or more and it is not known whether thedevelopment falls within sub-paragraph (c)(i)d) The provision of a building or buildings where the floor space to be created by the development is 1,000 sq metres or more; ore) Development carried out on a site having an area of 1 hectare or more.

If Yes, a SuDS review and a detailed drainage strategy are required. Complete Sections 1-8.
If No, SuDS are not required; however, SuDS are advised as outlined within the Barnet Surface Water Management
Plan (2012) and the policy 5.13 of the London Plan (2016). A drainage strategy report is still required. Complete
Sections 1-3 and Section 6.

2

3. Flood Risk Assessment (FRA) Requirements
For more complex developments it is advised that the applicant contact the Barnet Planning Department to request preapplication planning advice 8 . The Environment Agency’s website can be used to aid in determining the proposeddevelopment’s fluvial flood risk (Flood Zone) and other sources of flood risk 9.

No.

QuestionIs theproposeddevelopment
Q.3.1 situated within
Flood Zone 2or Flood Zone3?
Is theproposeddevelopment
Q.3.2
greater than orequal to one
hectare?
Is theproposeddevelopment
at risk of
Q.3.3
flooding by
sources otherthan Rivers
and Seas?

Is theproposeddevelopment
Q.3.4
within a Critical
Drainage
Area?

Applicant Response

Next Steps
If Yes, FRA
required.
Complete
Sections 1–8.
If No, go to
Q.3.2.
If Yes, FRA
required.
Complete
Sections 1-8.
If No, go to Q.3.3
If Yes, FRA
required.
Complete
Sections 1-8.
If No, FRA not
required.
Complete
Sections 1-3 andSection 6.
If Yes, FRA isadvised, please
consult BarnetCouncil for
details.
Complete
Sections 1-8.
If No Complete
Sections 1-3 andSection 6.

Notes
A FRA is required fordevelopment proposals
if the proposeddevelopment issituated within Flood
Zone 2 or Flood Zone
3 in accordance with
the National Planning
Policy Framework(NPPF, 201210).
A FRA is required fordevelopment proposals
on developments
comprising one hectare
or above in accordancewith the National
Planning Policy
Framework (NPPF,
201211).
If the proposeddevelopment is
considered to be at riskof sources of flooding
other than Rivers andSeas (i.e., surface
water, groundwater,
reservoirs and otherartificial sources) a
FRA is required inaccordance with the
NPPF (2012).

The Critical Drainage
Areas for Barnet are
defined within the
Barnet Surface Water
Management Plan
(2012)12 – seeAppendix E1 of theVolume 2–
Appendices.

8 https://www.barnet.gov.uk/citizen-home/planning-conservation-and-building-control/forms/Request-for-pre-application-planning-advice.html
9 http://apps.environment-agency.gov.uk/wiyby/default.aspx
10 https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/6077/2116950.pdf
11 https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/6077/2116950.pdf
12 https://www.barnet.gov.uk/citizen-home/planning-conservation-and-building-control/planning-policies-and-furtherinformation/ldf-evidence-and-supporting-documents/surface-water-management-plan.html

3

4. Infiltration Suitability Assessment
Is the proposed development located within an area that may support infiltrating SuDS, in accordance with theBarnet Surface Water Management Plan (2012)13?
⃝ Yes

⃝ No

The infiltrating SuDS Suitability Map has been defined within the Barnet Surface Water Management Plan (2012) based
upon the British Geological Society maximum and minimum permeability datasets across Barnet. See Appendix D7 of
Volume 2-Appendices of the document. It is strongly recommended that the applicant contact Barnet Council for further
advice on the suitability of infiltrating SuDS for the development at the pre-application stage to ensure that an acceptable
SuDS scheme is submitted (please note that additional pre-application fees may apply)14.
If Yes, the use of infiltrating SuDS is advised.
Is the use of infiltrating SuDS proposed?
⃝ Yes⃝ No (If Yes, complete Q4.1 – Q4.9)

If No, provide a justification below:

No.
Q.4.1

Q.4.2

Infiltration
Sustainability
Assessment
What is the proposeddevelopment’s geology?
Has a groundinvestigation been
undertaken for the
proposed development?

Application Response

Notes
Include both bedrock andsuperficial deposits whereknown

Yes / No
Depth below ground level (m):Q.4.3

Depth to groundwater

Borehole reference & date of test (where known):

13

https://www.barnet.gov.uk/citizen-home/planning-conservation-and-building-control/planning-policies-and-furtherinformation/ldf-evidence-and-supporting-documents/surface-water-management-plan.html
14 https://www.barnet.gov.uk/citizen-home/planning-conservation-and-building-control/forms/Request-for-pre-applicationplanning-advice.html

4

No.

Q.4.4

Q.4.5

Q.4.6

Q.4.7
Q.4.8

Q.4.9

Infiltration
Sustainability
Assessment

Application Response

If infiltration rates havebeen sourced frominfiltration tests go to
Q.4.7. If not go to Q.4.6.

What is the infiltration
rate of the soil at the
proposed development?
How has the proposeddevelopment’s
infiltration rate been
derived?
Has a ContaminatedLand assessment been
undertaken for the
proposed development?
Is the proposeddevelopment on
contaminated?
What is the depth of any
contamination sealing?
Is the proposeddevelopment locatedwithin a Source
Protection Zone (SPZ)?

Notes

NB/ infiltration rates
should be no lower than 1
x 10-6 m/s.
Please briefly describe themethod used to calculate
the proposeddevelopment’s infiltration
rate.

Yes / No
If No, go to Q.4.9.

Yes / NoIf Yes, go to Q.4.8.
If no contamination sealing
please write None

Yes / No

Find out whether
your development iswithin an EA Source
Protection Zone15

For further details on the guidance for evaluating potential constraints to the use of infiltration see Section 25.2 of the Ciria
SuDS Manual16.
If the proposed development’s soil or groundwater has been identified as being contaminated land (see Q.4.7) it is strongly
recommended that the Environment Agency be consulted, who may be able to provide detailed advice during the planningconsultation.

15 http://maps.environment-

agency.gov.uk/wiyby/wiybyController?x=357683&y=355134&scale=1&layerGroups=default&ep=map&textonly=off&lang=_e&topic=groundwater
16 http://www.ciria.org/Memberships/The_SuDs_Manual_C753_Chapters.aspx

55. Surface Water Discharge Hierarchy
Surface water must be managed in accordance with the hierarchy for discharge destinations. Where it is not possible toachieve the first hierarchy, applicants must demonstrate in sequence why the subsequent discharge destination was
selected. Multiple discharge locations can be selected as applicable (supported by Approved Document Part H of the
Building Regulations, 2010). Early consideration must be given to the use of rainwater harvesting systems and / or the useof green roofs. Green roofs and rainwater harvesting systems both manage surface water runoff and deliver a source of
non-potable water for the proposed development where practical.
Each applicant must demonstrate one or more of the following exception criteria if either rainwater harvesting or green roofs
are not used within the proposed development:a) There is no foreseeable demand for non-potable water within the proposed development throughout its design life;orb) The use of rainwater harvesting or green roofs is not a viable / cost-effective part of the surface water runoff
management solution within the proposed development. This includes taking account of the potential water supply
benefits of such a system and the value added to the proposed development.
In most cases green roofs and / or rainwater harvesting systems alone will not be adequate to deal with the surface waterrunoff management within the proposed development; provision will be required for an overflow to the next stage in thesurface water discharge hierarchy, or lower.

Hierarchy
Preference

Surface Water Discharge
Location

Yes /No

Explanation / Justification
Green roofs:

Re-use rainwater for nonpotable water supply(Water re-use systems ofrainwater include SuDS
practices like rainwater
harvesting and green roofs)

1

2

Attenuationand gradualreleaseAttenuate surface water inponds or open water features
for gradual release

3

Attenuate surface water bystoring in tanks or sealed
water features for gradualrelease4

5

Discharge surface water
through infiltration techniques

Discharge towatercourse

Discharge surface water
directly to a watercourse

Yes /
No

Rainwater harvesting systems:

Yes /
No

Yes /
No

Yes /
No

Yes /
No

6

Hierarchy
Preference
678Discharge tosewerage
network

Surface Water Discharge
Location
Discharge surface water to asurface water sewer/drain
Discharge surface water to a
local highways drain
Discharge surface water to the
combined sewer.

Yes /
No

Explanation / Justification

Yes /
No
Yes /
No
Yes /
No

Is discharging to a sewer, highway drain, surface water body or another type of drainage system proposed?
⃝ Yes

⃝ No

If Yes, provide written verification that the Authority(ies) have been notified, and:a) Accept receiving surface water from the proposed development; andb) Have agreed to the proposed surface water discharge runoff rate and volume specified in Section 6.

7

6. Surface Water Runoff and Storage
In accordance with the Barnet Surface Water Management Plan (2012) new developments should demonstrate that during
events that exceed the design capacity of surface water drainage system excess water is safely stored and discharged
from the proposed development without adverse impacts. Further, development must be safe from flooding over its whole
lifetime, including for the impacts of climate change, and should use all opportunities to reduce flood risk overall. As such,
surface water drainage for developments must be sized appropriately for the control and treatment of surface water runoff(both flow rates and volume) in accordance with applicable policies, bye-laws and guidance.
Surface water runoff calculations should include the peak discharge rate, the maximum flow rate at which surface waterrunoff shall leave the proposed development during a specific pluvial return period, and discharge volumes for both before
and after the implementation of the proposed development. The Greenfield runoff rate, existing surface water runoff rate
and the surface water runoff rate post development should be calculated for the 1 in 1, 1 in 30, 1 in 100 and 1 in 100 plus
climate change allowances pluvial design return periods. Developments should aim to achieve Greenfield run-off rates andensure that surface water run-off is managed as close to its source as possible, in accordance with the London Plan (2016)17
the Non-statutory Technical Standards for Sustainable Drainage Systems18, and industry best practice such as Rainfall
Runoff Management for Developments19.
Where reasonably practicable, for Greenfield developments, the resultant runoff volume from the development into any
sewer, highways drain surface water body, or other drainage system during the 1 in 100 year pluvial event with a 6 hour
rainfall duration, should not at any point exceed the Greenfield runoff volume for the same event. Similarly, where
reasonably practicable, for proposed developments that have been previously developed, the runoff volume from the newdevelopment to any sewer, Highways drain, surface water body or other drainage system during the 1 in 100 year pluvial
event with a 6 hour rainfall duration, should be as close as reasonably possible to the Greenfield Runoff volume for thesame event and should never exceed the runoff volume from the proposed development prior to redevelopment for thatevent.
Attenuation storage is required to control the volume of surface water discharged from the proposed development in orderto mitigate increasing flood risk downstream. When considering the impact of climate change to the volume of attenuation
storage that must be provided please note that the Environment Agency has issued revised guidance on this topic 20. Using
the Environment Agency guidance, the lifespan of the proposed development should be used to determine the appropriate
climate change allowances. The ‘Upper end’ climate change allowance figure should be used to calculate the required
attenuation storage. If it is not reasonably practicable to accommodate the ‘Upper end’ climate change allowance figure,then sufficient justification must be provided for acceptance of the use of the ‘Central’ climate change allowance figure.
It is accepted that, in general, surface water attenuation storage calculated by the simplified method based on QBAR isappropriate for most proposed developments. However, where site conditions permit, applicants are encouraged to
calculate attenuation storage based the complex method and incorporate long term storage into the design of the surface
water management system.
Please provide the information below and submit sufficient supporting documentation (report, plans, calculations, etc.) to
demonstrate that the surface water management system complies with applicable policies, bye-laws and guidance.

Please state the method used to calculate the Greenfield runoff rate for the proposed development:17

https://www.london.gov.uk/what-we-do/planning/london-plan/current-london-plan
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/415773/sustainable-drainage-technicalstandards.pdf
19 http://evidence.environmentagency.gov.uk/FCERM/Libraries/FCERM_Project_Documents/Rainfall_Runoff_Management_for_Developments__Revision_E.sflb.ashx
20 https://www.gov.uk/guidance/flood-risk-assessments-climate-change-allowances188Design
ReturnPeriodGreenfield
Runoff Rate(l/s)

Existing Runoff
Rates (Only if
Previously
Developed) (l/s)

Proposed
Runoff Rate
(l/s)

Notes

1 in 1 year

1 in 30 year

1 in 100year
The surface water runoff rates for the‘Upper End’ climate change allowanceshould be included here

1 in 100
year plus
climatechangePluvialEvent

The surface water runoff rates for the‘Central’ climate change allowance should
be included here

Runoff Volume for
Existing
Development(m3)

Storage Volume
Required to Achieve
Greenfield Runoff
Rates
(m3)

Proposed Post-development
Storage Volume(m3)

1 in 100 year
pluvial event,
6 hour rainfall
duration
If it is not reasonably practicable to maintain a Greenfield Runoff rate for the proposed development please provide
justification below:

No.

Proposed Attenuation
Volume (m3)Type of SuDS Feature Proposed (please briefly describe the SuDS
feature and approximate location of feature within proposed development’s boundary)

1
2
3
4
5

9

7. Water Quality
Pollution controls should be incorporated within SuDS designs to protect and improve the quality of water bodies to achieve
an overall “good status” by 2027. This is required by the Thames River Basin Management Plan (2015) 21, which sets out
the requirements of the Water Framework Directive (2000 22) within the Thames River Basin District. All surface water
discharging from a proposed development should not breach any of the current Environment Quality Standards (EQS) set
out within the Water Framework Directive Standards and Classification Directions (England and Wales, 2015) 23. Pleaserefer to BREEAM Hea 04 Water Quality24 for good practice on minimising the risk of contamination.
The incorporation of pollution control within SuDS designs is also required in accordance with the Barnet Surface Water
Management Plan (2012) and Policy 5.14 of the London Plan (2016). The applicant may need an environmental permit if
you discharge liquid effluent or wastewater into surface waters, or into the ground. Please refer to EA and DEFRA
Environmental Management guidance on discharges to surface water and ground water: environmental permits (2016) 25
for further details.
The applicant should use a ‘management train’ approach to:

Improve water quality as set out within the Thames River Basin Management Plan (2015);
Ensure that accidental spills are trapped in / on upstream component surfaces; andFacilitate contaminant management, which includes removal and system rehabilitation.

The Ciria SuDS Manual26 states a combination of treatment processes via a management train approach is the mosteffective treatment method. This will involve sedimentation processes (typically effective in removing particulates) followed
by a filtration process. The range of SuDS components available provides the proposed development flexibility to integratesurface water management with urban design and to meet water quality, amenity and biodiversity design criteria. For further
details please review Chapter 26 of the SuDS Manual.
The table below shows the typical indicative suitability of SuDS components within a ‘management train’ approach.

SuDS / Treatment Practices

Green Roof
Rainwater Harvesting System
Filter Strip
Swale
Permeable pavement /surface
Bioretention surface
Detention basin
Pond
Wetland
Infiltration systems
Attenuation storage tank
Proprietary treatment
systems*

Do the SuDS / Treatment Practices achieve the following
water quality treatment processes?
Pollution
Primary
Secondary
Tertiary
Prevention /Treatment
Treatment
TreatmentInterception
Process
Process
Process
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes

Yes

Yes
Yes

Yes
Yes

Yes
Yes

Yes

Yes
Yes
Yes
Yes
Yes

Yes
Yes
Yes

Yes

Yes

Yes

21 https://www.gov.uk/government/collections/river-basin-management-plans-2015#thames-river-basin-district-rbmp-2015
22 http://ec.europa.eu/environment/water/water-framework/index_en.html
23 http://www.legislation.gov.uk/uksi/2015/1623/pdfs/uksiod_20151623_en.pdf
24 http://www.breeam.com/BREEAM2011SchemeDocument/content/05_health/hea04.htm
25 https://www.gov.uk/guidance/discharges-to-surface-water-and-groundwater-environmental-permits
26 http://www.ciria.org/Memberships/The_SuDs_Manual_C753_Chapters.aspx

10

A good practice for treatment is set out in Section 3.3.2 Water Quality Standard 2 in the Ciria SuDS Manual27. The tablebelow outlines the treatment requirements and design strategies for discharges of surface water runoff to receiving waters,from different land use types, as outlined in the Ciria SuDS Manual.

Land Use
Residential roofs

Pollution
HazardLevel
Very Low

Individual property
driveways,
Non-residential roofs

Water Quality Treatment for Discharges forDevelopment
Requirement – The removal of gross solids andsediments only
Requirement – Follow the simple index approach:
Step 1 – Allocate suitable pollution hazard indices forthe proposed land use

Residential car parks

Step 2 – Select SuDS with a total pollution mitigationindex* that equals, or exceeds, the pollution hazard
index**

Low traffic roads (e.g. cul desacs, general access roads)

Step 3 – Where the discharge is to protected surface
waters or groundwater, consider the need for a
precautionary approach

Low
NB/ Additional measures may be required fordischarges to protected resources*Pollution mitigation indices is defined within Table
26.15 of the Ciria SuDS Manual. The indices are aqualititative assessment of the different SuDS Practices
and pipe drainage ranging from 0-1.
**Pollution hazard indices is defined within Table 26.2 of
the Ciria SuDS Manual. The indices (for eachcontaminant type) range from 0 (no pollution hazard forthis contaminant type) to 1 (high pollution hazard for thiscontaminant type).
Requirement 1 – Follow the simple index approach:Non-residential car parks
which are unlikely to change(e.g. schools)

Commercial yard / delivery
areas

Non-residential car parks
which are subject to frequentchange (e.g. retail car parks)

All roads which are not low
traffic

Step 1 – Allocate suitable pollution hazard indices forthe proposed land use
Step 2 – Select SuDS with a total pollution mitigationindex* that equals, or exceeds, the pollution hazard
index**

MediumStep 3 – Where the discharge is to protected surface
waters or groundwater, consider the need for a
precautionary approach
NB/ Additional measures may be required fordischarges to protected resources*Pollution mitigation indices is defined within Table
26.15 of the Ciria SuDS Manual. The indices are a

27 http://www.ciria.org/Memberships/The_SuDs_Manual_C753_Chapters.aspx

11

Land Use

Pollution
HazardLevel

Water Quality Treatment for Discharges forDevelopment
qualititative assessment of the different SuDS Practices
and pipe drainage ranging from 0-1.
**Pollution hazard indices is defined within Table 26.2 of
the Ciria SuDS Manual. The indices (for eachcontaminant type) range from 0 (no pollution hazard forthis contaminant type) to 1 (high pollution hazard for thiscontaminant type).

Trunk Roads & Motorways
Proposed developments withheavy pollution
Proposed developments
which handle, store, use,
manufacture or havechemicals delivered
Proposed developments
which handle, store, use,
manufacture or have fuelsdelivered
Industrial Sites
Primary Land Use of
Proposed Development

High

Requirement 2 – Risk Screening must be undertaken
first to determine whether consultation with theEnvironment Agency is required.
Requirement – Follow the guidance process set out inHD45/09 (Highways Agency, 201428)
Requirement – Discharges may require an
environmental license or permit. It is advised that prepermitting advice be obtained from the Environment
Agency.

High

Requirement 2 – A risk assessment of the proposeddevelopment is likely to be required to determine theappropriate design approach. This assessment should
be approved by the Environment Agency.

Pollution Hazard Level

SuDS / Treatment Practices
Proposed for the Site

Have appropriate water quality treatment best practices been proposed for the proposed development given its
Pollution Hazard Level?
⃝ Yes

⃝ No

If it is not reasonably practicable to adopt SuDS / Treatment Practices for the proposed development, please provide
justification below:

28 http://www.standardsforhighways.co.uk/dmrb/vol11/section3/hd4509.pdf

12

8. Adoption, Operation & Maintenance
The surface water drainage strategy for the proposed development must be accompanied by evidence of an Adopting Body
accepting responsibility for the safe operation and maintenance of SuDS within the development. It must be noted that bothThames Water and the London Borough of Barnet will only adopt SuDS under exceptional circumstances. The Adopting
Body must demonstrate that sufficient funds have been set aside and / or sufficient funds can be raised to cover operationand maintenance costs throughout the lifespan of the development. The Adopting Body shall be responsible for satisfying
themselves of the suitability of the adopted SuDS prior to adoption, and shall keep records of operation and maintenanceactivities, for possible inspection by the Council.

Adopting Body
Name
Street Address
Town/City
Postcode
Description of the SuDS practices
being adopted
Location(s) of the SuDS practices
being adopted
Length of Time Adopting Body has
agreed to manage operation andmaintenance of SuDS
Adopting Body has agreed toprovide sufficient funds throughout
the management lifetime to ensure
the SuDS operate as per design
specifications and are maintained
adequately.
The Adopting Body agrees tomaintain records of inspections of
SuDS under their management
and maintain records ofmaintenance performed for future
review by the London Borough ofBarnet.

Yes / NoYes / No

Provide details regarding theoperation and maintenance planfor the SuDS being adopted by the
Adopting Body.
Drainage Strategy plans must show the location(s) of SuDS being managed by the Adopting Body(ies). If there is morethan one Adopting Body, attach further details.

13

9. Documents Supplied
Please specify all of the documents supplied with the application (if ‘Other’ relevant documents please state the document
type and name of the document submitted with the application below):

Existing Site Plan

Document
Supplied?
Yes / No

Proposed Site Plan

Yes / No

Topographic Survey

Yes / No

Proposed Basement Plan

Yes / No

Proposed Ground Floor Levels

Yes / No

Flood Risk Assessment

Yes / No

Drainage Strategy

Yes / No

Discharge to Surface Water
Sewer Agreement Statement

Yes / No

Adoption of SuDS Agreement
Statement

Yes / No

Proposed Construction Phasing
Plan(s) [for large proposeddevelopments]

Yes / No

Sustainability Assessment

Yes / No

Document Type

Other Documents

Name of Document Supplied with
Application

Name of Document Submitted with
Application

14