crossrail line 1 assessment of lighting impacts: technical...

Crossrail Line 1Assessment of Lighting Impacts: Technical Report

Crossrail Line 1 Assessment of Lighting Impacts Technical Report Volume 2 of 2 1E0324-G0E00-00001

O

O

I

O

C

U

O

U

B

L

L

M

3

O

O

I

O

C

U

O

U

O

O

O

I

O

C

U

B

C

5

U

O

O

O

I

O

C

U

B

M

M

H

4

U

B

L

L

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2

U

O

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C

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B

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Receptors Location

Other

B - Baseline C - Construction O - Operation Site Activity

Criteria + Magnitude

Workplace

ResidentialC - CriticalH - High M - ModerateL - Low

Receptor Group + Sensitivity

Other

Built Environment

Ecological

Dark Landscape

Astronomers

Pedestrian

Vehicular

Dim

Neutral

Security

Exterior Amenity

Exterior Vehicular/Pedestrian

Exterior Emergency

Exterior Workplace

BrightPerceived Brightness+ Impact

Interior WorkplaceN - Normal Working E - Extended Daytime A - Dusk Till 12.30am O - Dusk Till DawnI - Infrequent/TestingU - Unlit

Illumination Function+ Operational Hours

Site DescriptionExisting rail junction for the Heathrow Airport line located tothe south of the Stockley Park development in West London.Receptors:

Lighting SchemeNo lighting to existing railway track.

W11Route WindowStockley Flyover (East) Site

E2Environmental ZoneStockley Flyover (Airport Junction)Location

Baseline Scoping

Design Proposals and Scoping Assessment Pro-formaSite Location

N/AN/AEngineering Information provided by Crossrail

N/A

Revision

N/A

Date

Relevant Parliamentary Plan Sheets

Reference Documents

Proposals Assessment

OR - Rain M - Mist O - Overcast C - ClearClimatic Conditions

W11-1 to W11-22 InclusivePhotographic Record

23.12.04DateKate Lownes & Ewald GermishuysPersonnel

Assessment

Site DescriptionAs part of the remodelling of the routes in and out of Heathrow, two parallel ramps would be constructed in order to lift tracks to a new elevated transfer structure.

Lighting SchemeThe Construction Planning Report states that:“…Temporary lighting will be required during all the night time possessions noted in the possession requirements. It may also be required at the start and end of the day during the winter months i.e. Nov-March.”

Construction Design Proposals: Scheme description + Site Diagram

Site DescriptionNew flyover structure facilitates access in and out of Heathrow for Crossrail and the new Heathrow Express.

Lighting SchemeNo details of proposed permanent lighting installation for the junction available at the time of the scoping survey 23.12.2004.

Baseline Installation Proposals: Scheme description + Site Diagram

Operation Design Proposals: Scheme description + Site Diagram

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5

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Site Boundary



Scoping and Proposals Analysis Pro-forma Site Location

L

L

M

3

C

5

H

H

H

4

L

L

H

2

L

L

M

1

Receptors LocationCriteria + Magnitude

Workplace

ResidentialC - CriticalH - High M - ModerateL - Low

Receptor Group + Sensitivity

Other

Built Environment

Ecological

Dark Landscape

Astronomers

Pedestrian

Vehicular

OCOCOCOCOCSite Activity Compared to Baseline C - Construction O - Operation

Construction Mitigation

IAIAIAIAIAIdentify Significance ( I ) of Impact or Proceed with Analysis ( A )

NSNSNSNSNSP+ PARTICULARLY SIGNIFICANT POSITIVES+ SIGNIFICANT POSITIVENS NOT SIGNIFICANTS- SIGNIFICANT NEGATIVEP- PARTICULARLY SIGNIFICANT NEGATIVE

Residual Impact

Secondary Mitigation

Primary Mitigation

CMCMCMCMCMConclude Assessment ( C ) orIdentify Mitigation ( M )

Action

AAAAAIdentify Significance ( I ) of Impact orProceed with Analysis ( A )

Action

NSP-NSS-NSS-NSS-NSS-P+ PARTICULARLY SIGNIFICANT POSITIVES+ SIGNIFICANT POSITIVENS NOT SIGNIFICANTS- SIGNIFICANT NEGATIVEP- PARTICULARLY SIGNIFICANT NEGATIVE

Significance of ImpactReceptor Sensitivity

SSSSSN - NEGLIGIBLEM - MODERATE ADVERSES - SUBSTANTIAL ADVERSE

Potential ImpactDuration of Change

Action

N

C

S N N

C

SN

C

S

C

SN

C

S

Conclude Assessment ( C ) orInstigate Detailed Assessment ( D)

Result

B - BENEFICIALN - NEGLIGIBLEM - MODERATE ADVERSES - SUBSTANTIAL ADVERSE

Magnitude of ChangeBrightness Comparison

AnalysisW11Route WindowStockley Flyover (East)Site




W11Route WindowStockley Flyover Site



W11-1

W11-11

W11-2 W11-3 W11-4 W11-5

W11-7 W11-8 W11-9 W11-10

W11-12 W11-13 W11-14 W11-15

W11-6



W11Route WindowStockley Flyover Site



W11-16

W11-21

W11-17 W11-18 W11-19 W11-20

W11-22