Crossrail Line 1 Assessment of Lighting Impacts: Technical ...74f85f59f39b887b696f-ab656259048fb93837ecc0ecbcf0c557.r23.cf3.ra… · Assessment of Lighting Impacts: Technical Report

Crossrail Line 1Assessment of Lighting Impacts: Technical Report

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

OSecurity

WW

HIT

1

O

N

H

7

WW

HIT

1

N

H

6

1

O

N

L

5

WW

HIT

1

N

M

L

M

H

1

Receptors Location

WW

HIT

1

O

N

H

2

WW

HIT

1

O

N

M

L

H

3

1

N

M

4

WW

HIT

1

O

N

C

8

1

O

N

M

L

9

WW

HIT

2

O

N

L

M

10

SOX FLU SON TH HIT MBF OtherLamp Type

Y Yellow WW Warm CW Cool C ColouredLamp Colour

3 High 2 Moderate 1LowGlare

Dim

Perceived Brightness+ Impact

Other

D - DetailedSite Activity

Criteria + Magnitude

Workplace

ResidentialC - CriticalH - High M - ModerateL - Low

Receptor Group + Sensitivity

Other (Sports)

Built Environment

Ecological

Dark Landscape

Pedestrian

Vehicular

Neutral

Other

Exterior Amenity

Exterior Vehicular/Pedestrian

Exterior Emergency

Exterior Workplace

Bright

Interior WorkplaceN - Normal Working E - Extended Daytime O - Dusk Till DawnI - Infrequent/TestingA - Dust Till 12:30amU - Unlit

Illumination Function+ Operational Hours

Detail Assessment Pro-formaSite Location

Detailed Assessment

Site DescriptionA. Westbourne Park Turnback Facility – Currently existing on the proposed site are a Tarmac Concrete Production Facility and land that is owned by the English, Welsh & Scottish (EWS)

Railways. Running East to West across a portion of the site is the Westway A40 Flyover. To the north of the site is the Grand Union Canal and a number of residential properties who currently have a limited view of the site between the existing site boundary wall and the Westway flyover. To the East of the site are a number of high rise residential towers and a number of outdoor sports pitches located under the Westway A40 Flyover. The residents in the upper levels of the towers will be able to see over the flyover and will have direct views into the site. Directly to the south are railway lines comprising of both BR and LUL services, further south are a mix of mid and high rise residential properties with direct views of the site, the lower levels have their views partially obscured by deciduous trees. Directly West of the site is the Westbourne Park Bus Depot.

Detailed Installation Proposals: Scheme description + Site Diagram

Baseline Lit EffectA. Tarmac Concrete Production facility is generally lit from floodlights mounted upon site equipment, the floodlighting is supplemented by a number of luminaires with HIT lamps (warm white)

mounted on 8-10m tall columns. Additionally there are a number of buildings on site which are internally lit. The English, Welsh & Scottish Railways land is generally dark bar an area floodlit for security purposes.

Luminance Readings: Receptor 1: 2259 cd/m² ** Residents, road users, pedestrians and commercial property, located to the north west of the site, Great Western Road will have a view across the canal to the rear of the

site. Currently the brightest object in the scene are the luminaires within the bus depot land. Some light from the existing site is visible between the existing site boundary wall and the Westway flyover.

Receptor 2: - Residential property located to the north of the Grand Union Canal, will currently have a view of the rear of the site, Some light will be visible between the existing site boundary wall and the Westway flyover. No measurement taken, unable to access property.

Receptor 3: 1260 cd/m² High rise residential towers located on Alfred Road (see NC1-27 for photo of receptor) will have a direct view over the Westway Flyover and into the site. Additional receptors in the area include, traffic, pedestrian and residents living in the lower levels of the towers, these receptors current view into the site is through the entrance to the EWS Railways Land, a predominantly dark space bar a single area flood lit for security purposes. Luminance measurement taken of the security floodlight.

Receptor 4: 1200 cd/m² ** Users of the external sports pitches located under the Westway Flyover. Luminance measurement taken of the sports pitch floodlights. Receptors view of existing site is partially obscured by the existing site wall.

Receptor 5: - Vehicular users of the Westway Flyover. Flyover lit by luminaires with SON lamps (yellow) mounted on 10-15m tall columns. No measurement taken from flyover. Receptor 6: - Residents located along Westbourne Park Villas. Upper levels of residential building will have line of sight to the worksite (as can be seen from photo NC1-20) . No

measurement taken as no access to residential property.Receptor 7: 19 cd/m² Residents of the Brunel Housing Estate. Residents have a direct view of the site, partially obscured by deciduous trees. Luminance measurement taken of floodlights

located within the existing Tarmac site.Receptor 8: - No measurement taken. Unable to access train lines. Receptor 9: - Pedestrian and vehicular users of the Great Western Road Bridge. No measurement taken, view of site heavily obscured by bridge parapet.Receptor 10: 2961 cd/m² Bus drivers leaving the Westbourne Park Bus Depot have a view into the site. Luminance measurement taken of floodlights located within the existing tarmac site. Photo

NC1-08 is a view of the internal working space of the bus depot.It should be noted that although luminaires are present along the length of the northern side of the railway, they are not functional. Spill light is illuminating this area: (photos NC1-18 & NC1-19). Luminance measurements taken from receptor 4 were equal to 3.4 cd/m² for this area

08.11.04 / 18:30Date/TimeBarry Hannaford, Keith Miller, Kate Lownes & Iain CarlilePersonnel

NC1-05 – NC1-07 inclusiveReceptor Location 10

-Receptor Location 9


NC1-01 – NC1-04 inclusiveReceptor Location 7


NC1-18 – NC1-24Receptor Location 4

NC1-11 – NC1-17 & NC1-25 & NC1-26Receptor Location 3


Receptor Location 5

Receptor Location 1

Photographic Record

Climatic Conditions

-

NC1-09 & NC1-10

R - Rain M - Mist O - Overcast C - Clear O

C1Route WindowWestbourne Park Turnback FacilitySite

E4Environmental ZoneRoyal Oak Portal, Westbourne ParkLocation

12

4 59

3

Site Diagram

5

6

7 8

10

Site Boundary

A




NC1-01Floodlight: 19cd/m²

NC1-11EWS site: 1.0cd/m²

NC1-02Floodlight: 19cd/m²

NC1-03

NC1-08

NC1-13 NC1-14



NC1-07

NC1-12Portacabin Façade: 1.5cd/m²

NC1-15

NC1-06Floodlight: 2961 cd/m²Façade: 15 cd/m²

NC1-09Bus depot floodlight: 2529 cd/m²Reflections in water: 6 cd/m²

NC1-10Sky Glow: 0.5cd/m²

NC1-04Luminaires: 15cd/m² Paths: 1cd/m²Garage Facades: 0.3cd/m²

NC1-05Luminaire: 227cd/m²Sky Glow: 1.5cd/m²




NC1-16Security floodlight: 1260cd/m²Portacabin Façade: 2.1cd/m²

NC1-21

NC1-17 NC1-18Luminaires: 134cd/m²Railway trackside: 3.4cd/m²

NC1-23Sports pitch floodlight: 1200cd/m²Sports pitch surface: 2.5cd/m²

NC1-27



NC1-25

NC1-19Luminaires: 70cd/m²Railway trackside: 0.2cd/m²

NC1-24Sports pitch: 4cd/m²

NC1-26Sports centre roof light: 18cd/m²Direct/Indirect luminaire: 208cd/m²

NC1-20Luminaires (far side of railway) 7.5cd/m²Façade (far side of railway) 0.7cd/m²

NC1-22Residential block windows: 7cd/m²



Detail Assessment Pro-forma

Receptor Location 5 – Vehicular users of the Westway flyover.Baseline; Vehicular users of the Westway Flyover have clear uninterrupted views of the sites, Areas A and B from multiple angles.

During Construction; Ambient illumination levels, therefore sky glow and visual brightness will be increased. Hoarding is unlikely to sufficiently shield views into the site, due to the elevated location of the track. Accurate direction, aiming and localised shielding of fixtures may aid in limiting glare and direct views of lamp sources above hoarding level. Spill light should not impact. However, given the close proximity to the sites and multiple sight lines, glare may be experienced at some viewing locations. As the site is operational 24/7 the duration of the impact is extended. As the Westway roadlighting is extensive and bright. The suggested impact is ‘NOT SIGNIFICANT’.

During Operation; It is assumed that the turnback facility will be illuminated 24/7. Impacts upon receptors, in comparison to the baseline condition should be minimal, dependent upon the design of the turnback lighting scheme – currently no details provided. The suggested impact is ‘NOT SIGNIFICANT’.

Receptor Location 6 – Residents of Westbourne Park VillasBaseline; Direct views into the site are partially obscured by the site boundary wall on ground level. Views from upper floors will be unimpeded.

During Construction; From upper levels, hoarding is unlikely to sufficiently shield views into the site, due to the elevated location of the upper floors. Ambient illumination levels, therefore sky glow and visual brightness will be increased. Accurate direction, aiming and localised shielding of fixtures may aid in limiting glare and direct views of lamp sources above hoarding level. Spill light should not impact. However, given the close proximity to the site and elevated location, from upper floors, glare may be seen at some viewing locations. As the site is operational 24/7 the duration of the impact is extended. The suggested impact is ‘SIGNIFICANT ADVERSE’.

During Operation; It is assumed that the turnback facility will be illuminated 24/7. Impacts upon receptors, in comparison to the baseline condition will be evident, dependent upon the design of the turnback lighting scheme – currently no details provided. If the existing baseline is reinstated the suggested impact is ‘NOT SIGNIFICANT’. If a new lighting scheme, designed in accordance with key guidance publications, is installed the impact may improve to ‘SIGNIFICANT BENEFICIAL’.

Receptor Location 7 – Residents of the Brunel Housing Estate high rise tower blocksBaseline; Direct views into the site are partially obscured by the site boundary wall and deciduous trees at ground level. Views from upper floors will be unimpeded.

During Construction; Ambient illumination levels, therefore sky glow and visual brightness will be increased. From upper levels, hoarding is unlikely to sufficiently shield views into the site, due to the elevated location of receptors. Accurate direction, aiming and localised shielding of fixtures may aid in limiting glare and direct views of lamp sources above hoarding level. Spill light should not impact. However, given the close proximity to the site and elevated location, from upper floors, glare may be seen at some viewing locations. As the site is operational 24/7 the duration of the impact is extended. The suggested impact is ‘SIGNIFICANT ADVERSE’.

During Operation; It is assumed that the turnback facility will be illuminated 24/7. Impacts upon receptors, in comparison to the baseline condition will be evident and significant, dependent upon the design of the turnback lighting scheme – currently no details provided. If the existing baseline is reinstated the suggested impact is ‘NOT SIGNIFICANT’. If a new lighting scheme, designed in accordance with key guidance publications, is installed the impact may improve to ‘SIGNIFICANT BENEFICIAL’.

Receptor Location 8 – Train Drivers Baseline; Clear views of the site from multiple angles of view.

During Construction; Clear views into the site. Hoarding is unlikely to sufficiently shield views into the site, due to the elevated height of the train drivers. Ambient illumination levels, therefore sky glow and visual brightness will be increased. Accurate direction, aiming and localised shielding of fixtures may aid in limiting spill light, glare and direct views of lamp sources above hoarding level. However, given the close proximity to the site multiple sight lines, glare may be seen at some viewing locations. As the site is operational 24/7 the duration of the impact is extended. The suggested impact is ‘SIGNIFICANT ADVERSE’. Crossrail will work with Network Rail to devise and implement measures that will ensure that any impact is ‘NOT SIGNIFICANT’.

During Operation; It is assumed that the turnback facility will be illuminated 24/7. Impacts upon receptors, in comparison to the baseline condition will be evident and significant, dependent upon the design of the turn back lighting scheme – currently no details provided. Ambient illumination may impact upon the views of signalling. If the existing baseline is reinstated the suggested impact is ‘NOT SIGNIFICANT’. If a new lighting scheme, designed in accordance with key guidance publications, is installed the impact may improve to ‘SIGNIFICANT BENEFICIAL’.

Receptor Location 1 – Residences/Vehicles/Pedestrians/Workplace on and adjacent toGreat Western RoadBaseline; Views of a mixed illuminated Area – floodlighting, security lighting and internally illuminated buildings and unlit areas are generally obstructed by the illuminated bus garage.

During Construction; The receptors view into the site Area A will be generally obstructed by the bus garage and Westway Flyover. Ambient illumination levels, therefore sky glow and visual brightness will be increased. Mitigation measures such as hoarding will be effective in obscuring low level illumination. Accurate direction, aiming and localised shielding of fixtures may aid in limiting, glare and direct views of lamp sources, above hoarding. As the site is operational 24/7 the duration of the impact is extended. Given the distant proximity to Area A and obscured site lines the bus depot is likely to remain the brightest area in view, similarly spill light should not cause an impact. The suggested impact is ‘NOT SIGNIFICANT’.


Receptor Location 2 – Residences north of the Grand Union CanalBaseline; Views of a mixed illuminated Area – floodlighting, security lighting and internally illuminated buildings and unlit areas are seen between underside of the Westway flyover and walls to the site boundary.

During Construction;. The receptors view into the site Area A will be generally obstructed by the bus garage and Westway Flyover. Ambient illumination levels, therefore sky glow and visual brightness will be increased Mitigation measures such as hoarding will be effective in obscuring low level illumination. Accurate direction, aiming and localised shielding of fixtures may aid in limiting, glare and direct views of lamp sources, above hoarding. As the site is operational 24/7 the duration of the impact is extended. The distant proximity to Area A and limited angles of view, the resulting impact should be negligible, similarly spill light should not cause an impact. The suggested impact is ‘NOT SIGNIFICANT’.


Receptor Location 3 – Residences of Alfred Road high rise towers. Vehicles/Pedestrians Baseline; Unobstructed views of the site, a mixed illuminated Area – floodlighting, security lighting and internally illuminated buildings and unlit areas are seen between underside of the Westway flyover and walls to the site boundary are seen, particularly at high level. Lower level receptor views are obstructed by the Westway flyover and site boundary wall.

During Construction; Ambient illumination levels, therefore sky glow and visual brightness will be increased. Hoarding is unlikely to sufficiently shield views into the site from high level. Accurate direction, aiming and localised shielding of fixtures may aid in limiting spill light, glare and direct views of lamp sources above hoarding level. However, given the proximity and unobstructed views into the site glare may impact. Spill light should not be an issue. As the site is operational 24/7 the duration of the impact is extended. The suggested impact is ‘SIGNIFICANT ADVERSE’.

During Operation; It is assumed that the turnback facility will be illuminated 24/7. Impacts upon receptors at high level will be increased, compared to the baseline, dependent upon the design of the turnback lighting scheme – currently no details provided. The suggested impact is ‘NOT SIGNIFICANT’.

Receptor Location 4 – Users of the External Sports Pitches below the Westway FlyoverBaseline; Direct views into the site are partially obscured by the site boundary wall and impeded as the site is generally at a lower level than the sports pitches.

During Construction; Ambient illumination levels, therefore sky glow and visual brightness will be increased. As a result of the view, hoarding will generally be at a lower level than the site boundary wall. Accurate direction, aiming and localised shielding of fixtures may aid in limiting spill light, glare and direct views of lamp sources above wall level. As obscured, the suggested impact is ‘NOT SIGNIFICANT’.

During Operation; It is assumed that the turnback facility will be illuminated 24/7. Impacts upon receptors will be limited, compared to the baseline, as a result in the increase in illumination levels and reflected ambient illumination. This effect is dependent upon the design of the turnback lighting scheme – currently no details provided. The suggested impact is ‘NOT SIGNIFICANT’.

AnalysisC1Route WindowWestbourne Park Turnback FacilitySite

E4Environmental ZoneRoyal Oak Portal, Westbourne ParkLocationSite Location



Detail Assessment Pro-forma

Receptor Location 9 – Pedestrian and Vehicular users of Great Western Road BridgeBaseline; Limited views of a mixed illuminated Area – floodlighting, security lighting and internally illuminated buildings and unlit areas are generally obstructed by the road bridge construction, solid structure at low level and buildings adjacent to the site.

During Construction; The receptors view into the site will be generally obstructed. Ambient illumination levels, therefore sky glow and visual brightness will be increased. Given the obscured sight lines the street lighting to the Great Western Road Bridge is likely to remain the brightest area in view, similarly spill light should not cause an impact. The suggested impact is ‘NOT SIGNIFICANT’.


Receptor Location 10 – Bus Drivers at the Westbourne Park Bus Depot

Baseline; Views of a mixed illuminated Area – floodlighting, security lighting and internally illuminated buildings and unlit areas are partially obstructed by fencing.

During Construction; The receptors view into the site will be generally obstructed by fencing. Ambient illumination levels, therefore sky glow and visual brightness will be increased. Mitigation measures such as hoarding will be ineffective in obscuring low level illumination due to the elevated location of the site. Accurate direction, aiming and localised shielding of fixtures may aid in limiting, glare and direct views of lamp sources, above hoarding. The resulting impact should be negligible, similarly spill light should not cause an impact. The suggested impact is ‘NOT SIGNIFICANT’.

During Operation; It is assumed that the turnback facility will be illuminated 24/7. Impacts upon receptors, in comparison to the baseline condition should be minimal, dependent upon the design of the turn back lighting scheme – currently no details provided. The suggested impact is ‘NOT SIGNIFICANT’.

AnalysisC1Route WindowWestbourne Park Turnback FacilitySite

E4Environmental ZoneRoyal Oak Portal, Westbourne ParkLocationSite Location

Documents

Crossrail Line 1 Assessment of Lighting Impacts: Technical ...74f85f59f39b887b696f-ab656259048fb93837ecc0ecbcf0c557.r23.cf3.ra… · Assessment of Lighting Impacts: Technical Report