valcoustics canada ltd. - burlington.ca

VALCOUSTICS CANADA LTD. Burlington Business Park – NoiseFile: 106-427-300

TABLE OF CONTENTS

1.0 INTRODUCTION.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2.0 SITE DESCRIPTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

3.0 NOISE GUIDELINES.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

4.0 ANALYSIS.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24.1 ANALYSIS METHOD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34.2 AMBIENT SOUND LEVEL CALCULATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34.3 NOISE IMPACT FROM LOADING DOCKS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

4.3.1 Assessment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44.3.2 Potential Mitigation Measures.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

4.4 NOISE IMPACT FROM ROOFTOP MECHANICAL UNITS. . . . . . . . . . . . . . . . . 54.5 DETAILED STUDIES.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

5.0 CONCLUSIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

LIST OF FIGURES

FIGURE 1 KEY PLAN

FIGURE 2 DRAFT PLAN OF SUBDIVISION

FIGURE 3 SOURCE ID’S

FIGURE 4 GUIDELINE LIMITS (dBA)

FIGURE 5 HOURLY SOUND LEVELS (dBA) - DUE TO LOADING ACTIVITIES

LIST OF APPENDICES

APPENDIX A ROAD TRAFFIC CORRESPONDENCE

APPENDIX B SOURCE SOUND LEVELS

30 Wertheim Court, Unit 25, Richmond Hill, Ontario L4B 1B9 Tel: 905-764-5223 / E-mail: [email protected]

VALCOUSTICS CANADA LTD. Burlington Business Park – NoiseFile: 106-427-300 Page 1

Environmental Noise Impact Study

Burlington Business Park

Proposed Office/Employment DevelopmentBlock 23, 20M-1034

City of Burlington

1.0 INTRODUCTION

Valcoustics Canada Ltd. (VCL) previously prepared Environmental Noise Impact Study reports,dated December 21, 2006, December 11, 2007 and July 24, 2013, for the proposedoffice/employment development. This update report has been prepared to support the Draft Planof Subdivision application.

This report assesses the noise impact from the development onto the adjacent noise sensitiveuses. Potential mitigation measures are presented to ensure the applicable Ministry of theEnvironment and Climate Change (MOE) noise guidelines will be met.

2.0 SITE DESCRIPTION

The proposed office/employment development is located on the west side of Appleby Line, on thenorth side of Palladium Way, in the City of Burlington. The site is divided into ten blocks with oneinternal access roadway (“Street A”) connecting to Palladium Way. Blocks 1 to 4 lie to the east ofStreet A (adjacent to Appleby Line) and Blocks 5 to 10 lie to the west of Street A. Blocks 8 to 10front onto Palladium Way and will be accessed through driveways connecting directly to PalladiumWay.

The site is bounded by:

• future business park/employment lands, with Highway 407 beyond, to the north;• Palladium Way, with existing residential dwellings beyond, to the west;• Palladium Way, with an existing commercial development, future high-rise residential

development and existing low rise residential beyond, to the south; and• Appleby Line to the east.

Figure 1 is a Key Plan showing the site location.

This report is based on the Draft Plan of Subdivision, dated April 14, 2016, prepared by KorsiakUrban Planning. Figure 2 shows the Draft Plan of Subdivision.



3.0 NOISE GUIDELINES

The applicable noise guidelines for use in development applications for both stationary sources andsensitive land uses are those in MOE Publication NPC-300, “Environmental Noise Guideline,Stationary and Transportation Sources – Approval and Planning”. The environmental noiseguidelines of the MOE, as provided in Publication NPC-300, are discussed briefly below andsummarized in Appendix B.

The site and area are Class 1; i.e., an area where the ambient sound environment is dominatedby “urban hum”, primarily traffic noise. This is due to the proximity to the area road network.

The MOE requires a “worst case” one-hour operating scenario be analysed. This would typicallyoccur when the background ambient sound level is at a minimum and the noise generated fromthe stationary noise sources is at a maximum.

The guideline limits apply to the outdoor plane of window of habitable spaces such asliving/dining/family rooms and sleep areas as well at locations amenable for use outdoors. Thereare no indoor sound level limits provided for stationary sources.

MOE Publication NPC-300 states that the guideline limits shall be defined by the higher of theambient sound level, due to road traffic noise, or the minimum exclusion limits, in any hour of theday. The minimum exclusion limits are 50 dBA during the daytime (0700 to 1900) and evening(1900 to 2300) and 45 dBA at night (2300 to 0700). Sound levels are assessed using one-hourLeq (dBA), the energy equivalent continuous sound level. The sound level limits apply at a noisesensitive plane of window (at all times) or at an outdoor point of reception in the daytime andevening only. The sound level limits do not apply to outdoor points of reception at night.

4.0 ANALYSIS

At this stage, the actual uses within the development are not known. Thus, guidance with respectto noise control of future office/commercial operations is outlined herein.

The buildings and equipment within the buildings can be designed to ensure that the noisegenerated indoors is adequately attenuated to comply with the MOE noise guideline requirements.

Thus, the main noise sources of concern are from outside activities. The main noise sources aretrucks and rooftop mechanical equipment. For trucks, the issues are movements on site, idlingengines while stationary and potential impulsive sounds from truck loading/unloading andcoupling/uncoupling. If refrigerated trucks are used, the operation of the refrigeration unit couldbe another potential source.

In terms of noise impact from the site onto the neighbouring noise sensitive developments, thegreatest acoustical concern is at the residential dwellings to the south, on the south side ofPalladium Way. Currently, the lands to the south consist of two- and three-storey townhouseblocks and a vacant parcel of land at 4853 Thomas Alton Boulevard. The vacant land is zonedHigh Density Residential (RAL4-331), which permits a maximum building height of 10-storeys. Forthis assessment, a 10-storey residential tower at the north property line (the worst case location,closest to the business park) was assumed.



4.1 ANALYSIS METHOD

A preliminary 3-D acoustic model of the proposed facility, as shown on Figure 3, was developedto predict the potential sound levels at the residential developments due to activities at the loadingdocks. The model was developed using the CadnaA V4.4 environmental noise modelling software,which implements the protocols of ISO Standard 9613-2, "Acoustics – Attenuation of Sound DuringPropagation Outdoors".

The assessment was done using the building evaluation feature in the CadnaA software. Thisfeature calculates a sound level at a grid of receptors along each facade at every storey of thebuilding. The figures in this report show the building evaluations. The numbers in the octagonsrepresent the predicted maximum sound level (in dBA) at that location at any floor of the building.

Note that the assessment was done for the daytime (0700 to 1900) and evening (1900 to 2300)time periods only, as the facilities are not expected to be open during the nighttime hours.

4.2 AMBIENT SOUND LEVEL CALCULATION

As assessment of the ambient sound level due to road traffic noise (Highway 407 and ApplebyLine) was first done to establish the noise guideline limits. The ambient sound levels were basedon the current traffic volumes for Highway 407 (year 2011, obtained from the University of TorontoData management group) and Appleby Line (year 2013, obtained from Halton Region). To beconservative, road traffic volumes on Palladium Way were not included in the assessment. Theminimum hourly traffic volumes during the daytime and evening time periods were estimated usingthe ITE traffic distribution.

Minimum ambient sound levels at the neighbouring residential dwellings were calculated in termsof one-hour Leq, for the indicated hours, using the RLS-90 road traffic prediction model inherent inthe CadnaA software. The applicable guideline limits (the higher of the minimum exclusion limitsor the ambient sound levels) at neighbouring residential dwellings are shown on Figure 4. Asmentioned above, the octagons around the perimeter of each building show the maximumdaytime/evening sound level that occurs at that location on the facade at any storey of the building.The circle in the centre of each building shows the maximum daytime sound level in the bottom leftcorner and the maximum evening sound level in the bottom right corner that occur at any locationon the building.

It should be noted that Palladium Way is not included in the assessment due to low traffic volumes. It is expected that the traffic volumes along Palladium Way will increase in the future as thebusiness corridor between Palladium Way and Highway 407 continues to develop. Thus, it isexpected that the ambient sound levels will be higher in the future.

4.3 NOISE IMPACT FROM LOADING DOCKS

Typical commercial/industrial units will have office areas located at the front of the building with theindustrial uses at the back. Loading docks are typically at the rear. It is understood, the intent isthat the loading docks would not face Appleby Line or Palladium Way. Thus, it is anticipated thatthe buildings in this development will front south, toward Palladium Way, and have loading areason the north side. With this orientation, it is expected that the buildings themselves would provide



some acoustical screening from the loading dock activities to the residential dwellings. Due to theirheight and proximity, less screening would be provided to the high-rise towers.

4.3.1 Assessment

Since details about potential tenants and operations are currently unknown, it was assumed thattwo truck deliveries (one heavy truck and one medium truck) could occur at each of the buildingsduring the worst case hour during the daytime/evening (0700 to 2300) time period. This isconservative; in practice, it is likely that fewer trucks would arrive and depart the site. It wasassumed the facilities would be open during daytime and evening hours only. Thus, the impact oftruck deliveries during the nighttime hours (2300 to 0700) was not assessed.

Trucks would not be expected to idle their engines during loading/unloading. However, fiveminutes of idling at each location was included in the assessment to account for a small amountthat may occur during arrival and departure.

The predicted sound levels are shown on Figure 5.

As can be seen in Figures 4 and 5, the predicted sound levels due to truck activities at the loadingdocks are predicted to meet the guideline limits at the neighbouring dwellings to the south withoutany additional mitigation measures.

The sound level data for the truck analysis is shown in Appendix B.

4.3.2 Potential Mitigation Measures

In the scenario above, it was shown that the guideline limits can be met at the neighbouring noisesensitive receptors without additional mitigation measures. However, this was based on a numberof assumptions regarding the orientation of buildings and the operating conditions of the tenants.Note that additional mitigation measures could be required if the tenant operations include activitiessuch as:

• refrigerated truck deliveries, as trailer refrigeration units typically cannot be shut off and canbe a significant noise source;

• nighttime operations and truck deliveries, when the ambient sound levels and thus the noiseguideline limits are expected to be lower;

• frequent truck deliveries, beyond the numbers included in the assessment;

• loading docks that are fully or partially oriented toward the residential developments; and

• loading dock operations that use forklifts for loading and unloading, thus generating highimpulsive sound levels.

Mitigation measures that could be considered include wing wall sound barriers, partial or fullenclosures and/or modified orientations at the loading docks. Note that wing wall sound barriersmay not be sufficient in some cases as any future high rise towers at 4853 Thomas AltonBoulevard (the vacant parcel to the south) would have a line of sight to many of the loading docks.



It is noted that an application for a residential development, including three and four-storeytownhouse blocks and two 19-storey towers, has been submitted for lands at 4853 Thomas AltonBoulevard. At the time of writing this report, the application was not approved. These towers wouldbe significantly taller than the 10-storey building height permitted under the current zoning.However, in the event that the 19-storey towers are approved, the same mitigation measuresdiscussed above would also be appropriate.

4.4 NOISE IMPACT FROM ROOFTOP MECHANICAL UNITS

Specific selection of rooftop HVAC (heating ventilation and air conditioning) equipment has notbeen made. However, noise from rooftop air conditioning equipment could exceed the applicableguideline limits, if large units (such as cooling towers) are used and operation occurs during thenighttime period. In the event that noise is predicted to be of potential concern, based on thespecific unit selections and sound ratings from the manufacturer, rooftop barriers/screens aroundthe HVAC units could be used, in addition to orienting the equipment to minimize sound emissionsto the southern dwellings. The details should be determined once specifics of HVAC equipmentare known.

4.5 DETAILED STUDIES

Based on the potential noise impact the office/commercial uses could produce on the adjacentresidential uses, we recommend a detailed noise impact assessment be done for each ofBlocks 1 to 10 once the specific uses, operational parameters, and the associated noise sourcesfor the buildings on these lots are known. This could be a condition of Site Plan Approval on theseblocks. It is also recommended that the impact of the environment (i.e. road traffic noise sources)onto any office areas be assessed to ensure the indoor guideline limits due to transportation noisesources are met. This would need to be determined once the office layouts are known.

5.0 CONCLUSIONS

1. For all blocks, a detailed noise impact should be done to ensure the predicted sound levelsfrom the proposed industrial use comply with the MOE noise guidelines.

2. For light industrial use, it is anticipated that sound levels from the loading areas would meetthe noise guideline limits at the neighbouring receptors. Sounds associated with anyadditional activities at the loading docks may exceed the MOE guideline limits. Mitigationmeasures could include wing wall sound barriers, full or partial enclosures or modifying theorientation of the loading docks.

3. Although specific equipment selections have not yet been made, sounds associated withrooftop HVAC units may exceed the applicable MOE guideline limits. Acoustical screensaround the units may be required.

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Figure

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APPENDIX A

ROAD TRAFFIC CORRESPONDENCE


Appleby Line @ Palladium Way

Municipality: Burlington Major Road Runs: North/South

Major Road: Appleby Line Date: Apr 29, 2013 Weather Conditions: Rain/Overcast

Minor Road: Palladium Way Person No. 1 Colette

Person No. 2North Approach East Approach South Approach West Approach

Period Cars Trucks Ped. Cars Trucks Ped. Cars Trucks Ped. Cars Trucks Ped. Veh. Summary

Ending Left Thru Right Left Thru Right Cross. Left Thru Right Left Thru Right Cross. Left Thru Right Left Thru Right Cross. Left Thru Right Left Thru Right Cross. 15 60

7:15 0 63 5 0 11 0 0 0 0 0 0 0 0 0 2 185 1 1 6 0 0 4 0 3 0 0 0 1 281

7:30 0 82 0 1 7 0 0 0 0 0 0 0 0 0 2 182 0 0 16 1 0 5 0 2 0 1 0 0 299

7:45 0 121 2 1 10 0 0 0 0 0 0 0 1 0 2 280 0 0 9 0 0 8 0 6 0 0 1 1 441

8:00 0 118 4 0 8 1 0 0 0 0 1 0 0 0 2 281 0 2 9 0 3 2 0 2 1 0 0 2 431 1452

8:15 0 121 4 1 9 0 6 0 0 0 0 0 0 4 0 242 0 0 16 0 3 8 0 0 0 0 0 0 401 1572

8:30 1 133 1 0 6 0 2 0 0 0 0 1 0 2 3 293 1 1 18 0 6 6 0 5 0 2 1 2 472 1745

8:45 0 108 1 0 10 0 0 1 0 0 0 2 0 0 2 203 0 0 11 0 10 1 0 4 0 0 1 2 344 1648

9:00 0 116 1 0 8 1 0 0 0 1 0 0 0 0 2 175 2 1 14 0 8 3 0 5 0 1 0 0 330 1547

11:15 0 52 0 0 5 1 0 0 0 1 0 0 0 0 1 58 1 1 8 0 0 0 0 1 0 0 0 0 129

11:30 0 54 1 0 7 0 0 1 0 0 0 0 0 0 2 58 0 0 5 0 1 1 0 4 0 0 0 0 133

11:45 0 46 0 0 8 1 0 1 0 0 0 0 0 0 1 66 0 0 11 0 0 1 0 0 0 0 0 0 135

12:00 0 54 0 0 8 3 0 0 0 0 0 0 2 0 1 64 0 0 14 0 3 0 0 1 0 1 0 0 148 545

12:15 0 74 2 0 6 0 0 1 0 1 0 0 0 0 1 60 0 0 12 1 0 1 0 4 0 0 2 0 165 581

12:30 1 53 1 1 4 0 0 0 0 0 0 0 0 0 2 70 2 0 5 0 0 1 0 5 0 0 0 0 145 593

12:45 1 48 1 0 9 0 2 0 0 0 0 0 0 0 4 61 1 0 10 0 0 0 0 5 0 1 0 0 141 599

13:00 1 65 1 1 8 1 0 0 0 1 1 0 1 0 1 44 0 1 9 1 2 0 0 1 0 0 0 0 137 588

13:15 0 49 0 0 9 1 0 0 0 1 0 1 0 0 2 58 0 1 6 1 0 1 0 1 3 0 1 1 135 558

13:30 0 73 1 0 9 1 0 0 0 0 0 0 0 0 3 72 0 0 10 0 0 0 0 2 0 0 0 0 171 584

13:45 0 87 0 0 8 0 1 1 0 0 0 0 0 0 3 64 1 0 16 0 1 0 0 1 1 0 0 2 182 625

14:00 0 72 2 0 10 0 0 0 0 1 0 1 0 0 2 62 0 0 9 1 0 0 0 2 0 0 1 0 163 651

15:15 0 78 3 0 8 0 0 0 0 0 0 1 0 0 3 68 0 1 11 1 4 2 0 5 0 0 1 0 182

15:30 0 129 2 0 7 1 0 1 0 0 0 1 1 0 2 84 1 0 12 0 2 1 0 2 0 0 2 2 246

15:45 0 142 6 0 5 0 0 0 0 0 0 0 0 1 3 97 0 1 2 0 2 2 0 2 0 0 1 0 261

16:00 0 134 2 0 17 0 0 0 0 0 0 0 0 1 1 118 0 0 12 0 1 2 0 4 0 0 0 0 290 979

16:15 0 178 7 0 10 0 0 0 0 0 0 0 0 1 3 104 0 0 5 0 4 1 0 2 0 0 0 0 310 1107

16:30 0 184 4 0 9 0 0 0 0 1 0 0 0 0 5 151 1 0 10 0 0 5 0 8 0 0 0 0 378 1239

16:45 0 174 8 0 10 0 0 0 0 0 0 0 0 0 7 119 0 0 4 0 0 0 0 2 0 0 0 0 324 1302

17:00 0 238 5 0 3 0 0 1 0 0 0 0 0 0 7 180 1 0 8 0 0 2 0 5 0 0 0 0 450 1462

17:15 0 243 11 0 6 0 0 0 0 0 0 0 0 0 4 188 0 0 1 0 2 3 0 7 0 0 0 0 463 1615

17:30 0 247 9 0 3 0 1 0 0 0 0 0 0 1 2 181 0 0 4 0 0 1 0 4 1 0 0 0 452 1689

17:45 0 248 6 0 2 0 0 2 0 0 0 0 0 0 3 146 0 0 6 0 0 1 0 4 0 0 0 2 418 1783

18:00 0 211 7 0 5 0 0 0 0 0 0 0 1 0 1 135 0 0 6 0 1 1 0 5 1 0 0 0 373 1706

Hourly

2011 Cordon Counts for Highway 407 East of Walkers Line

User: cdelossaTime: Thu Nov 6 16:14:33 2014Database: halt11

, , , start, end, , , ,station,dir, records, time, time, tot_veh, tot_aut, tot_trk, tot_trn-------,---,----------,----------,----------,----------,----------,----------,----------5004E ,E , 4, 601, 700, 1578, 1392, 177, 75004E ,E , 4, 701, 800, 3672, 3367, 299, 65004E ,E , 4, 801, 900, 2628, 2376, 243, 85004E ,E , 4, 901, 1000, 1356, 1199, 156, 15004E ,E , 4, 1001, 1100, 979, 824, 150, 55004E ,E , 4, 1101, 1200, 856, 675, 173, 85004E ,E , 4, 1201, 1300, 688, 566, 118, 45004E ,E , 4, 1301, 1400, 820, 686, 130, 25004E ,E , 4, 1401, 1500, 810, 661, 144, 35004E ,E , 4, 1501, 1600, 883, 737, 138, 75004E ,E , 4, 1601, 1700, 1149, 1032, 112, 35004E ,E , 4, 1701, 1800, 1091, 973, 108, 85004E ,E , 4, 1801, 1900, 631, 579, 49, 25004E ,E , 4, 1901, 2000, 402, 365, 30, 75004W ,W , 4, 601, 700, 318, 239, 77, 25004W ,W , 4, 701, 800, 708, 579, 123, 55004W ,W , 4, 801, 900, 1050, 906, 135, 65004W ,W , 4, 901, 1000, 802, 654, 139, 55004W ,W , 4, 1001, 1100, 714, 583, 122, 95004W ,W , 4, 1101, 1200, 662, 538, 118, 65004W ,W , 4, 1201, 1300, 765, 600, 158, 75004W ,W , 4, 1301, 1400, 785, 613, 164, 85004W ,W , 4, 1401, 1500, 983, 773, 206, 45004W ,W , 4, 1501, 1600, 1756, 1501, 252, 35004W ,W , 4, 1601, 1700, 2939, 2638, 290, 95004W ,W , 4, 1701, 1800, 3007, 2795, 207, 55004W ,W , 4, 1801, 1900, 1596, 1481, 109, 45004W ,W , 4, 1901, 2000, 690, 633, 51, 6

Page 1


APPENDIX B

SOURCE SOUND LEVELS



TABLE B-1

REFERENCE SOUND POWER LEVEL DATA FOR TRUCKS(1)

Source IDSource Height

Relative to Grade (m)

Octave Band Frequency (Hz), dBTotal dBA

31.5 63 125 250 500 1000 2000 4000 8000

Heavy Truck Idling 2.4 102 102 97 97 96 92 85 79 100

Medium Truck Idling 1.5 95 91 86 91 93 91 89 81 97

Heavy Truck Moving at 20 kph(1) 2.4 98 94 94 88 91 93 98 102 101 106

Medium Truck Moving at 20 kph(1) 1.5 92 88 87 81 85 87 92 96 94 100

Note:

(1) Based on FHWA Traffic Noise Model (TNM).


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