February 2001

DESIGN MANUAL FOR ROADS AND BRIDGES

VOLUME 10 ENVIRONMENTALDESIGN ANDMANAGEMENT

SECTION 0 ENVIRONMENTALOBJECTIVES

PART 1

HA 86/01

PRINCIPLES AND GUIDANCE

SUMMARY

This Advice Note provides guidance for those engagedin the assessment, design, implementation andoperation of new and existing highways. Specifically itdescribes a consistent system for defining and achievingthe environmental objectives, both policy and routespecific.

INSTRUCTIONS FOR USE

This is a new document to be incorporated into themanual.

1. Insert HA 86/01 into Volume 10, Section 0.

2. Archive this sheet as appropriate.

Note: A quarterly index with a full set of VolumeContents Pages is available separately from TheStationery Office Ltd.

HA 86/01

Principles and Guidance

Summary: This Advice Note provides guidance for those engaged in the assessment,design, implementation and operation of new and existing highways. Specificallyit describes a consistent system for defining and achieving the environmentalobjectives, both policy and route specific.

DESIGN MANUAL FOR ROADS AND BRIDGES

* A Government Department in Northern Ireland

THE HIGHWAYS AGENCY

THE SCOTTISH EXECUTIVE DEVELOPMENTDEPARTMENT

THE NATIONAL ASSEMBLY FOR WALESCYNULLIAD CENEDLAETHOL CYMRU

THE DEPARTMENT FOR REGIONAL DEVELOPMENT*

Volume 10 Section 0Part 1 HA 86/01

February 2001

REGISTRATION OF AMENDMENTS

Amend Page No Signature & Date of Amend Page No Signature & Date ofNo incorporation of No incorporation of

amendments amendments

Registration of Amendments

Volume 10 Section 0Part 1 HA 86/01

February 2001

REGISTRATION OF AMENDMENTS

Amend Page No Signature & Date of Amend Page No Signature & Date ofNo incorporation of No incorporation of

amendments amendments

Registration of Amendments

VOLUME 10 ENVIRONMENTALDESIGN ANDMANAGEMENT

SECTION 0 ENVIRONMENTALOBJECTIVES

PART 1

HA 86/01

PRINCIPLES AND GUIDANCE

Contents

Chapter

1. Principles and Guidance for Use

2. Enquiries

DESIGN MANUAL FOR ROADS AND BRIDGES

February 2001

FEBRUARY 200

VOLUME 10 SECTION 0PART 1 HA 86/01CHAPTE

1.1 This Adengaged in theof the existing

The technical documents anin this Section

The methodoloconsistent syspolicy, or route

! To enable full accoun

! To enable developingenvironme

! To enable consistentthat they m

! To enable agents in a

! To enable

1.2 The Adout above. As a high standar

The need for development professional dfrom engineelandscape ma

By applying thperformance

The followingbest practice,

It is intended assessment,

d into a sequential series of Parts, all of which are inter-he content of each Part:

Guidancenshe core Environmental Functions, enable users to attachf the highway estate. This includes the ability, when appropriate,lements an environmental function that will inform its design and

iptive text, with guidance notes for the core Elements of the softland, hedges. It also contains provision for inclusion of hardtive railings, feature paving materials, where these are there for

tsfeatures, enabling the description of such elements as Noisety controls, Protected Species, and legislated elements such asf these elements interact closely with landscape functions and

ironmental Database or Scheme Masterplan, to describe the content of, for instance, noise-reducing pavements. Theirto enable a co-ordinated approach to provision and management

reslusion of various statutory designations (eg Conservation Area),

of Way, and specific land uses.k managers to take account of the relevant features ase design and/or operational process.

e Requirementsir Managing Agents (MA), are developing a Database, using theR 1 PRINCIPLES AND GUIDANCE FOR USEvice Note is intended to provide guidance, and a methodology for those assessment, design, construction, improvement, operation and maintenance

and proposed highway network.

standards, design guidance, and procedural requirements are covered in otherd Advice Notes, which need to be used integrally with the processes described 1.

gy set out in this Section 1 of DMRB Volume 10, is intended to provide atem for defining and achieving the environmental objectives, which may be-specific objectives. The main aims of the system are as follows:

the design and implementation of capital maintenance and network improvements, takingt of the need to protect, and where practicable enhance, the existing environment.the environmental assessment and design of improvements utilising known data, and the options and design using a consistently-applied approach to the description ofntal features.the designer to provide design data and performance requirements to contractors in a format, to enable them to detail and implement the various environmental features sucheet the stated objectives, in the short and long term.

constructed scheme or existing network data to be handed over to succeeding managing consistent format and content.

environmental data to be utilised in analysing its interaction with other technical data.

vice Note provides a framework and process for achieving the main aims setwith the other sections of DMRB Volumes 10 and 11, the methodology relies ond of professional expertise being applied in the various disciplines.

onsideration of environmental matters in their wider sense has driven the

1.3 The Advice Note is subdividerelated. This paragraph summaries t

! PART 1: Principles and General ! PART 2: Environmental Functio

The codes and descriptive text for tobjectives to the various features oto ascribe highway and structural einfluence maintenance techniques.

! PART 3: Landscape ElementsThis Part provides codes and descrestate such as grass, planting, wetlandscape features, such as decoraspecific landscape reasons.

! PART 4: Environmental ElemenThis Part relates to non-landscape Attenuation measures, Water QualiInjurious Weeds and Pests. Many oelements.It is not the intention, within the Envtechnical details of the engineeringinclusion within this Advice Note is of environmental measures.

! PART 5: Planning & Policy FeatuThis Part provides codes for the incCultural Heritage Features, Rights This enables designers and networconstraints as an integral part of th

! PART 6: Environmental DatabasThe Highways Agency, through the1/1

d Elements system to record and update a consistent Environmental Asset inventory.cribes the core requirements of the Database, and the methodology for itsand operation.ents for MAs Landscape Management Plans are described in Part 8.1

cof the methodology. It is therefore of paramount importance that the variousisciplines required are interactive, with appropriate advice being sought, whether

rs, landscape designers, planners, environmental scientists, ecologists ornagers.

e co-ordinated multi-disciplinary teamwork approach, the overall environmentalof the highway estate can be significantly improved over time.

Parts of the Advice Note, used in conjunction with other technical guidance, and provide the basic tools.

for use by civil engineers, those undertaking studies, and environmental impactdesigners, contractors, scientists, and landscape managers.

Functions anThis Part desdevelopment The requirem

FEBRUARY 200

VOLUME 10 SECTION 0PART 1 HA 86/01

! PART 7: SThis part ilfor differen- Option A- Scheme- Detailed- Scheme- NetworkIt is not a Din associatdesign, andstages, an

! PART 8: CThis Advicemay howevConstructioThis part w- Managin- D & B - DBFO This part, tSchedulesextended afacilitate suspecific reqThis part c

! PART 9: G

1.4 DEFINThe guiding Strategic Pla

! BiodiverTo manabiodiversto add to

mentto minimise emissions. This includes appropriate highway designs totion plus controls on the performance of contractors. In addition we seek to in the vehicle and construction industries to play their part in reducing

to minimise noise and disturbance. This includes providing appropriateaking more use of noise reducing technologies. The Agency will also aim to of contractors about the importance on this issue. In addition we will in the vehicle, tyre and construction industries to play their part.

to ensure that the Trunk Road network is managed in the most sustainable existing resource, generating less waste and removing barriers that preventondary or waste materials.

nt practical steps to manage the drainage of our network; we aim totraffic and of our maintenance operations on water courses, groundwater and

capeect the landscape character and quality of an area when designing newting roads. We will seek to enhance the integration of our network into ruralion of sensitive road alignment, earthworks, the use of appropriate materialse the adverse effects of trunk road traffic on the countryside.

nning and resourcing of trunk road projects there is an appropriate responsen the historic environment and that the historic fabric of our landscape is

and Northern Ireland should consult with the Overseeings regarding their relevant environmental policies and

CHAPTER

cheme Development, Implementation and Management

lustrates how the Functions and Elements methodology are utilised and shown on planst purposes:ssessment (Stage 1) Design & Environmental Masterplans (Stages 2/3) Design & Contract Documentation/Network Handover Data Managementesign Guide or a manual for Environmental Assessment; these are adequately covered

ed guidance. This Part provides guidelines for applying and recording the assessment, performance of environmental features. It contains scheme examples at the various

d illustrates the principal requirements for Masterplans.ontract Performance Requirements Note is not intended to replace existing or emerging model contract documentation. Iter, be referenced as a Core performance requirement for many future Design,n and Network Management Contracts.ill therefore provide core text for the various procurement methods:g Agents: Core Environmental DutiesCore Performance Requirements for Functions and Elements Core Performance Requirements for Functions and Elementsogether with Parts 2, 3, 4, 5 and 6 in effect replaces the model text of various Annexes in 4 and 6 of the DBFO model. However, the relevant core text within Part 8 will need to bend adapted to suit scheme-or-network-specific requirements. It is therefore formatted tobstitution; e.g. the core text for D & B within this part can be deleted and the scheme-uirements inserted within the actual contract documentation.

ontains notes and guidance for compilers of environmental specifications.lossary of Terms

ION OF ENVIRONMENTAL OBJECTIVES

! Air Emissions ManageTo take practical steps influence vehicle operaencourage our partnersemissions.

! Noise ManagementTo take practical steps highway designs and mincrease the awarenessencourage our partners

! Waste ManagementTo develop techniques manner, conserving theor inhibit the use of sec

! Water ManagementTo identify and implememinimise the impact of flooding.

! Landscape and TownsOur objective is to resproads or improving exisareas using a combinatand planting to minimis

! HeritageTo ensure that in the plato any adverse effects orespected.

Users in Scotland, Wales Organisations within those

1 PRINCIPLES AND GUIDANCE FOR USE1/2

NCTIONS AND ELEMENTSd biological features that affect the environment oftive, but flexible system for their classification, as well as ae for correct identification, interpretation, and management.

thodology originally developed for DBFO, has beenthe purposes outlined in Part 1 Paragraph 1.1. Using this to be recorded and developed in a consistent manner ands from initial design through to construction requirements1

ITprinciples for England are set out in the Highways Agencys Environmentaln. The key Environmental Objectives are described as follows:

sityge our network in a practical way which promotes the maintenance and enhancement ofity that is to say the variety of life. In particular we seek to manage our own estate so as its existing value as a refuge and a linking feature for wildlife.

territorieobjectives.

1.5 INTRODUCTION TO FUThe wide diversity of landscape anhighways demands a robust, objecwide range of professional expertis

The Functions and Elements meadapted to enable its usage for all system enables environmental datalinked through all stages of schemeand management action plans.

FEBRUARY 2001

VOLUME 10 SECTION 0PART 1 HA 86/01

The codes repLandscape anconvenience iform an integr

It provides a extended andParts 2-5 are data transfer a

The principle contractors, aParts 6, 7, an

The system retool. Additionafeature refere

1.6 CORE FThe principle highway will hattributes or dThe basis of rhighway i.e. ifconstraint upo

All features (i.than one Funand Noise Att

Likewise, the Amenity, and Building. Part

Parts 2, 3, 4 awhich any texexample, at pthe Masterplafeature will nedescriptive tex

CHAPTE

nction Secondary Function Element

ening (EFA) Landscape Linear BeltsIntegration (EFB) (LE2.4)

servation - Statutory Natureity (EFD) Conservation

Designation (P1.1)ity (EFH) - Water Pollution

Control Measures(E2.1)

the Built Visual Amenity Hard Landscapet (EFC) (EFE) Feature (LE2.11)enity (EFG) - Noise Reducing

Surface (E1.1)

combinations, some of which are shown above, the user canatures and their role in the highway and wider environment.resent all the environmental objectives, apart from Air Quality, rather than justd Nature Conservation. Physical Environmental Features are subdivided fornto Landscape, Environmental, and Planning/Policy, although these elementsal part of the heading of Environment.

tool for users that, as long as the core requirements are followed, can be adapted to suit specific needs. The Core Datasets and Codes described inmandatory on all users on behalf of HA. This is essential to enable consistentnd collation nationally.

is that any additional detailed technical information required by designers,nd managers is linked but stored in separate associated databases/documents.d 8 describe the processes by which this can be achieved.

lies on simplicity, in order to provide a readily-usable design and managementl data, whether as image or text files, can be attached by utilising the unique

ncing system, and where appropriate, GIS technology via digital OS mapping.

UNCTIONS AND ELEMENTSis that each existing or proposed environmental feature on or adjacent to theave both one or more Functions, and an Element which describes its physicalesignation in statutory terms.ecording and showing these features is that they have an interaction with the there are features that do not have an environmental function, or form an the design or operation of the road, they would not be recorded.

e. Elements) may have a multiple purpose and therefore can be ascribed morection eg a vertical barrier may be designed to achieve both Visual Screeningenuation.

R 1 PRINCIPLES AND GUIDANCE FOR USE

Feature Primary Fu

Planted Screen Visual Scre

SSSI Nature Con& Biodivers

Reed Bed Water Qual

Painted Seating Enhancing Environmen

Porous Asphalt Auditory AmSurface

By utilising the multiplicity of the succinctly describe all relevant fes Visuala t Listed7 .

n extent tot purpose. Foru be needed onn nts for eache sterplan andt

1/3tandard of maintenance applied to a grassed area may enhancelso have a Heritage Function relating to the setting of an adjacen of this Advice Note provides illustrative examples of their usage

d 5 provide descriptive text for the Functions and Elements. Theis incorporated into documents and drawings will depend on the blic consultation stage, some site-specific explanatory notes may, whilst for Contract Requirements the specific design requiremed to be stated in the documents and cross-referenced to the Ma.

Volume 10 Section 0Part 1 HA 86/01

February 2001

2. ENQUIRIESAll technical enquiries or comments on this Advice Note should be sent in writing as appropriate to:

Divisional DirectorThe Highways AgencySt Christopher HouseSouthwark Street M A GARNHAMLondon SE1 0TE Divisional Director

Chief Road EngineerThe Scottish Executive Development DepartmentNational Roads DirectorateVictoria Quay J HOWISONEdinburgh EH6 6QQ Chief Road Engineer

Chief Highway EngineerThe National Assembly for WalesCynulliad Cenedlaethol CymruCrown BuildingsCathays Park J R REESCardiff CF10 3NQ Chief Highway Engineer

Assistant Director of EngineeringDepartment for Regional DevelopmentRoads ServiceClarence Court10-18 Adelaide Street D OHAGANBelfast BT2 8GB Assistant Director of Engineering

2/1

Chapter 2Enquiries

CONTENTSPRINCIPLES AND GUIDANCE FOR USEENQUIRIES