Luas Broombridge. Annex C.1 Human Beings: Noise Modelling and Predictions Report. St. Stephen s Green to Broombridge (Line BXD) Broombridge.

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1 Broombridge Luas Broombridge St. Stephen s Green to Broombridge (Line BXD) Annex C.1 Human Beings: Noise Modelling and Predictions Report Cabra Phibsborough Grangegorman Broadstone - DIT Parnell Dominick O Connell Upper Marlborough O Connell - GPO Westmoreland Trinity Dawson St. Stephen s Green

2 RPA Luas Broombridge NoiseModellingandPredictions Status:FINAL Date: RPA NoiseModellingandPredictions

3 RPA Noise Modelling and Predictions Status: Final Author Contributors RebeccaBarnard ApprovedBy GrahamParry ManagingDirector ReportFor Date VersionNumber Status RPA V2 Final ThisreporthasbeenpreparedbyACCONUKLimitedwithallreasonablecareanddiligencewithinthe termsofthecontractwiththeclient.wedisclaimanyresponsibilitytotheclientandothersinrespectof anymattersoutsidethescopeoftheabove.weacceptnoresponsibilitytothirdpartiestowhomthis report,oranypart,thereofismadeavailable.anysuchpartyreliesuponthereportattheirownrisk Page 2 Tel: Fax: enquiry@accon-uk.com Unit B, Fronds Park, Frouds Lane, Aldermaston, Reading, RG7 4LH. UK

4 RPA Noise Modelling and Predictions Status: Final NOISEMODELLINGANDPREDICTIONS 1.1. Introduction A noise modelling and prediction exercise was carried out in order to inform the Human Beings: Noise impact assessment chapter of this Environmental Impact Statement (EIS) (Books 2 and 3, Chapter 4) in respect of the construction and operational noise impacts along the route of the proposed scheme. The purpose of this Annex is to provide details of the process that was utilised to determine the predicted construction and operational noise levels and state what these noise levels are. The noise modelling software CadnaA was utilised to carry out the noise modelling and thus produce the predicted noise levels. CadnaA is a 3-D noise model that can be used to predict noise from traffic, trams, and construction activities. The model takes account of topography, barriers, ground and distance absorption and utilises standard prediction methodologies Construction Noise Impacts Modelling Methodology A detailed review of the construction activities that are intended to be implemented has determined the construction activities that need to be considered with respect to their potential to cause a noise impact to nearby sensitive receptor locations. Table 1 outlines the construction activities, the sound power levels, and percentage on-times that were utilised. It should be noted that the percentage on-times for plant and machinery are relatively low and represent how long the activity will occur in the immediate vicinity of the very closest receptors recognising that this is a linear construction project with plant and machinery moving up and down the route as required. The corrected sound power levels were then inputted into the CadnaA noise model at representative locations along the route of the proposed scheme. As well as the location of the route of the proposed scheme, the noise model included information regarding the location and height of buildings, topography, and ground absorption characteristics. The noise model did not take account of any mitigation measures, such as acoustic hoarding around the construction work sites and therefore a worst case scenario has been considered. Receptor locations were placed at ground floor height at the closest sensitive receptor to the construction activities Page 3 Tel: Fax: enquiry@accon-uk.com Unit B, Fronds Park, Frouds Lane, Aldermaston, Reading, RG7 4LH. UK

5 RPA Noise Modelling and Predictions Status: Final Table 1: Construction Activities Location Activity Equipment Stops Excavate and lay foundations create platform and stop pavings and finishing works North City Excavate and lay track bed, rails and finishing works South City Excavate and lay track bed, rails and finishing works Sound Power Level (L WA ) % On-time Page 4 Tel: Fax: enquiry@accon-uk.com Unit B, Fronds Park, Frouds Lane, Aldermaston, Reading, RG7 4LH. UK Corrected L WA Mini digger Dumper Vibrating roller Concrete truck Concrete pump Concrete poker Con saw Mini digger Dumper Vibrating roller Concrete truck Concrete pump Concrete poker Con saw Mobile crane Mini digger Dumper Vibrating roller Concrete truck Concrete pump Concrete poker

6 RPA Noise Modelling and Predictions Status: Final Location Activity Equipment Sound Power Level (L WA ) % On-time Con saw Mobile crane Broadstone Excavate for underpass Broadstone To Broombridge To Broombridge Construction of underpass Excavate Lay track bed, rails and finishing works 45 ton excavator Muckaway lorries Vibrating roller Concrete truck Concrete pump Concrete poker Con saw ton excavator Muckaway lorries Vibrating roller Concrete truck Concrete pump Concrete poker Con saw Mobile crane Page 5 Tel: Fax: enquiry@accon-uk.com Unit B, Fronds Park, Frouds Lane, Aldermaston, Reading, RG7 4LH. UK

7 Construction Noise Predictions The noise levels has been predicted at 25 locations, which represents the closest receptor locations to construction activities at 14 stops, the proposed underpass at Broadstone, 6 locations of track laying within Area 29, and 4 locations of track laying within Area 30. The 25 receptor locations are identified in Table 2. Table 2: Receptor Locations Receptor Location Number Area Receptor Location Dawson Street Dawson Street 3 29 Westin Dublin Hotel, College Street Westmoreland Street Marlborough Street O Connell Street O Connell Street Parnell Street Dominick Street Lower Existing petrol filling station, Constitution Hill Industrial Unit, Rathdown Road Garage, North Circular Road St. Attracta Road Industrial Units, Bannow Road Constitution Hill St. Stephen s Green North Nassau House, Nassau Street Hawkins Street Jury s Inn, Parnell Street Dominick Street Upper Marne Villas North Circular Road Cabra Road

8 Receptor Location Number Area Receptor Location Norfolk Road St. Attracta Road The sound power levels from Table 1 were inputted into the CadnaA noise model and the predicted noise levels ( LAeq,10hr ) at the receptor locations in Table 2 are shown in Table 3. Table 3: Predicted Construction Noise Levels Construction Works Location Activity Receptor Location Number Noise Level L Aeq,10hr Dawson Stop Northbound Stop construction 1 72 Dawson Stop Southbound Stop construction 2 73 Trinity Stop Stop construction 3 65 Westmoreland Stop Stop construction 4 72 Marlborough Stop Stop construction 5 74 O'Connell - GPO Stop Stop construction 6 63 O Connell Upper Stop Stop construction 7 63 Parnell Stop Stop construction 8 70 Dominick Stop Stop construction 9 74 Broadstone - DIT Stop Stop construction Grangegorman Stop Stop construction Phibsborough Stop Stop construction Cabra Stop Stop construction Broombridge Stop Stop construction Broadstone Underpass excavation Broadstone Underpass construction St. Stephen's Green Track construction Nassau Street Track construction Hawkins Street Track construction Parnell Street Track construction Dominick Street Upper Track construction 20 74

9 Construction Works Location Activity Receptor Location Number Noise Level L Aeq,10hr Marne Villa Track excavation Marne Villa Track construction North Circular Road Track excavation North Circular Road Track construction Cabra Road Track excavation Cabra Road Track construction Norfolk Road Track excavation Norfolk Road Track construction St. Attracta Road Track excavation St. Attracta Road Track construction It can be seen in Table 3 that the highest predicted construction noise levels of 76 L Aeq,10hr within Area 29 is predicted to occur at Nassau House on Nassau Street. The highest predicted construction noise levels within Area 30 is 77 L Aeq,10hr at 294 North Circular Road. The reason for these high noise levels is the very close proximity between the proposed construction works and the sensitive receptor location. It should be noted that the noise levels within Area 29 and near main roads, such as the North Circular Road, within Area 30 currently experience high noise levels due to a large volume of existing traffic. Hence the relative impact of the construction noise will be reduced and should not cause any major noise impacts Operational Noise Impacts Modelling Methodology The operational noise is produced by two main sources: traffic and trams. The traffic flow data provided by AECOM has been inputted into the CadnaA noise model for the do-minimum (without the scheme) and do-something (with the scheme) scenarios. For further details about the traffic flow data refer to the Human Beings: Traffic impact assessment chapter of this EIS (Books 2 and 3, Chapter 7). The input data for the tram noise has been determined from the following stages:

10 - Review of noise measurement survey along the existing Luas Red and Green Lines in respect of existing noise levels from operational trams. - Calculate the Sound Exposure Level (SEL) for trams on different types of track (e.g. embedded and ballast) from the noise measurement survey as well as a detailed review of noise measurement surveys carried out along the Luas Lines by other consultants. - Determine the frequency of trams along the proposed route for both the daytime and nighttime periods. The noise model also takes account of the location and height of buildings, topography, and ground absorption and distance attenuation effects. The model has been used to provide outputs noise levels at ground and first floor height at 82 representative locations along the length of the route for the following scenarios: - Traffic noise levels do-minimum daytime and night-time - Traffic noise levels do-something daytime and night-time - Tram noise levels daytime and night-time The road do-something and tram noise levels have then been combined to determine the overall predicted noise levels at the receptor locations when the proposed scheme is operational. The impacts within Area 29 are determined by calculating the noise level difference between the road do-minimum and combined road do-something and tram scenarios for both the daytime and night-time. The impacts within Area 30 are determined in a slightly different way. Traffic flow data is only provided for a limited number of roads within Area 30 and as such a comparison of the noise levels from the road do-minimum and the combined road do-something and tram scenarios would be inaccurate. However, apart from an isolated number of receptor locations most of the sensitive receptor locations are away from the direct influence of traffic noise. We have therefore compared the combined road do-something where known and tram scenarios with the measured baseline noise levels that are provided in the Noise Measurement Survey included in Annex C, Book 5, of this EIS Operational Noise Predictions The predicted noise levels within Area 29 are provided in Table 4 and the predicted noise levels within Area 30 are provided in Table 5.

11 Complies with 60 L den 11 L day N/A N/A L night N/A N/A L den Y N 12 L day N/A N/A L night N/A N/A L den Y N 13 L day N/A N/A L night N/A N/A L den Y N 14 L day N/A N/A L night N/A N/A L den Y N 15 L day N/A N/A L night N/A N/A L den Y N 16 L day N/A N/A L night N/A N/A Change due to Luas >3dBA Table 4: Predicted Operational Noise Levels in Area 29 Noise Monitoring Location Number Period Existing measured noise level Predicted noise level - Do minimum (2018) Predicted Noise level - Do something (2018) Change in noise indicator (+/-) Predicted Noise level - Do something (2018) tram noise only Criterion db

12 Complies with 60 L den L den Y N 17 L day N/A N/A L night N/A N/A N/A L den Y N 18 L day N/A N/A L night N/A N/A N/A L den Y N 19 L day N/A N/A L night N/A N/A L den Y N 20 L day N/A N/A L night N/A N/A N/A L den Y N 21 L day N/A N/A L night N/A N/A N/A L den Y N 22 L day N/A N/A N/A L night N/A N/A N/A Change due to Luas >3dBA Noise Monitoring Location Number Period Existing measured noise level Predicted noise level - Do minimum (2018) Predicted Noise level - Do something (2018) Change in noise indicator (+/-) Predicted Noise level - Do something (2018) tram noise only Criterion db

13 Complies with 60 L den L den Y N 23 L day N/A N/A N/A L night N/A N/A N/A L den Y N 24 L day N/A N/A N/A L night N/A N/A N/A L den Y N 25 L day N/A N/A N/A L night N/A N/A N/A L den Y N 26 L day N/A N/A N/A L night N/A N/A N/A L den Y N 27 L day N/A N/A N/A L night N/A N/A N/A L den Y N 28 L day N/A N/A N/A L night N/A N/A N/A Change due to Luas >3dBA Noise Monitoring Location Number Period Existing measured noise level Predicted noise level - Do minimum (2018) Predicted Noise level - Do something (2018) Change in noise indicator (+/-) Predicted Noise level - Do something (2018) tram noise only Criterion db

14 Complies with 60 L den L den Y N 29 L day N/A N/A N/A L night N/A N/A N/A L den Y N 30 L day N/A N/A N/A L night N/A N/A N/A L den Y N S1 L day N/A N/A N/A L night N/A N/A N/A L den Y Y S3 L day N/A N/A N/A L night N/A N/A N/A L den Y N Change due to Luas >3dBA Noise Monitoring Location Number Period Existing measured noise level Predicted noise level - Do minimum (2018) Predicted Noise level - Do something (2018) Change in noise indicator (+/-) Predicted Noise level - Do something (2018) tram noise only Criterion db Table 5: Predicted Operational Noise Levels in Area 30

15 1 L day N/A N/A N/A L night N/A N/A N/A L den Y N 2 L day N/A N/A N/A L night N/A N/A N/A L den Y N 3 L day N/A N/A N/A L night N/A N/A N/A L den Y N 4 L day N/A N/A N/A L night N/A N/A N/A L den Y N 5 L day N/A N/A N/A L night N/A N/A N/A L den N N 6 L day N/A N/A N/A L night N/A N/A N/A L den Y N Change due to Luas >3dBA Noise Measurement Location Number Period Existing measured noise level Predicted Noise level - Do something (2018) tram noise Change in noise indicator (+/-) Criterion Complies with 60Lden 7 L day N/A N/A N/A

16 L night N/A N/A N/A L den N N 8 L day N/A N/A N/A L night N/A N/A N/A L den N N 9 L day N/A N/A N/A L night N/A N/A N/A L den Y N 10 L day N/A N/A N/A L night N/A N/A N/A L den Y N S2 L day N/A N/A N/A L night N/A N/A N/A L den Y Y S4 L day N/A N/A N/A L night N/A N/A N/A L den Y Y Change due to Luas >3dBA Noise Measurement Location Number Period Existing measured noise level Predicted Noise level - Do something (2018) tram noise Change in noise indicator (+/-) Criterion Complies with 60Lden

17 Status: Tel: Fax: Unit B, Fronds Park, Frouds Lane, Aldermaston, Reading, RG7 4LH Page16of16