TABLE OF CONTENTS EXECUTIVE SUMMARY INTRODUCTION... 2

Transcription

1

2 VALCOUSTICS CANADA LTD. File: Thomas Alton Boulevard Phases 1 and 2/Burlington Noise 2 nd Update TABLE OF CONTENTS EXECUTIVE SUMMARY INTRODUCTION NOISE SOURCES TRANSPORTATION NOISE SOURCES Road Traffic STATIONARY NOISE SOURCES Industrial Business Park Existing Office/Commercial Development to the East ENVIRONMENTAL NOISE GUIDELINES MOE PUBLICATION NPC Transportation Noise Source Guidelines Architectural Elements Ventilation Outdoors Stationary Noise Sources Sound Level Criteria Applicable Guideline Limits REGION OF HALTON NOISE IMPACT ASSESSMENT - TRANSPORTATION NOISE SOURCES ROAD TRAFFIC SOUND LEVELS NOISE ABATEMENT REQUIREMENTS Indoors Architectural Elements Ventilation Requirements Outdoors Warning Clauses NOISE IMPACT ASSESSMENT - STATIONARY NOISE SOURCES PREDICTION METHOD ROOFTOP MECHANICAL EQUIPMENT ASSESSMENT RECEPTORS OPERATING SCENARIOS PREDICTED SOUND LEVELS Future Scenario NOISE IMPACT FROM THE DEVELOPMENT CONCLUSIONS REFERENCES cont d

3 VALCOUSTICS CANADA LTD. File: Thomas Alton Boulevard Phases 1 and 2/Burlington Noise 2 nd Update TABLE OF CONTENTS (continued) LIST OF TABLES TABLE 1 ROAD TRAFFIC DATA TABLE 2 PREDICTED FUTURE UNMITIGATED SOUND ENERGY LEVELS TABLE 3 RECOMMENDED NOISE ABATEMENT MEASURES TABLE 4 ROOFTOP MECHANICAL EQUIPMENT SUMMARY TABLE 5 TABLE 6 PREDICTED STATIONARY SOURCE SOUND LEVELS EXISTING SCENARIO PREDICTED STATIONARY SOURCE SOUND LEVELS FUTURE SCENARIO LIST OF FIGURES FIGURE 1 FIGURE 2 FIGURE 3 FIGURE 4 KEY PLAN CONCEPT SITE PLAN HOURLY SOUND LEVELS FUTURE HOURLY SOUND LEVELS LIST OF APPENDICES APPENDIX A APPENDIX B APPENDIX C APPENDIX D ROAD TRAFFIC DATA ENVIRONMENTAL NOISE GUIDELINES SAMPLE SOUND LEVEL CALCULATION STATIONARY SOURCE SAMPLE CALCULATION

4 VALCOUSTICS CANADA LTD Thomas Alton Boulevard Phases 1 and 2/Burlington Noise 2 nd Update File: Page 1 UPDATE Environmental Noise Assessment 4853 Thomas Alton Boulevard Phases 1 and 2 Proposed Residential Development City of Burlington EXECUTIVE SUMMARY Valcoustics Canada Ltd. (VCL) previously prepared an Environmental Noise Assessment report, dated September 28, 2015, for the proposed development at 4853 Thomas Alton Boulevard. This update has been prepared to address changes to the site plan. In the revised plan, the height of the podium connecting the two 19-storey towers has increased from 5 storeys to 6 storeys. The north tower has been shifted to the east and the south tower has been shifted further south. In addition, the back-to-back townhouses at the centre of the site have been replaced by a park area, and the layouts of the remaining stacked townhouse blocks and internal road network have been modified. The significant noise source in the vicinity is road traffic on Appleby Line, Palladium Way, Thomas Alton Boulevard and Highway 407. The sound levels on site have been determined and compared with the applicable Ministry of the Environment and Climate Change (MOE) noise guideline limits to determine the need for noise mitigation. To meet the applicable transportation noise source guideline limits: All suites in the two 19-storey residential towers and podium require mandatory air conditioning; Blocks 1, 3 and 7 to 12 require provision for adding air conditioning at a later date; The high-rise towers require exterior wall construction meeting a minimum Sound Transmission Class (STC) rating of 43 and upgraded windows meeting a minimum STC rating of 32;

5 VALCOUSTICS CANADA LTD Thomas Alton Boulevard Phases 1 and 2/Burlington Noise 2 nd Update File: Page 2 The applicable indoor noise guidelines at all other townhouse units are predicted to be met without any special window upgrades beyond the minimum non-acoustical requirements stated in the Ontario Building Code (OBC); and Sound barriers are required at the northern and southern end units in Blocks 1 and 3, respectively, as shown on Figure INTRODUCTION VCL previously prepared an Environmental Noise Assessment for Burlington Phase 5, dated November 6, 2012, and a subsequent Addendum Letter #1, dated March 27, The site was subsequently sold and a new development concept was proposed. The site is now referred to as 4853 Thomas Alton Boulevard. VCL prepared an update report, dated September 28, 2015, to address the new development concept. This update has been prepared to address further changes to the site plan. In the revised plan, the height of the podium connecting the two 19-storey towers has increased from 5 storeys to 6 storeys. The north tower has been shifted to the east and the south tower has been shifted further south. In addition, the back-to-back townhouses at the centre of the site have been replaced by a park area, and the layouts of the stacked townhouse blocks and internal road network have been modified. The proposed development will be built in two phases. Phase 1 consist of a high-rise residential building consisting of two 19-storey towers atop a 6-storey podium. Phase 2 consists of three blocks of conventional townhouse units (Blocks 1 to 3) and nine blocks of stacked townhouse units (Blocks 4 to 12). The conventional townhouse units will have grade level rear yard outdoor amenity areas. The stacked townhouse units will not have grade level rear yard amenity areas. The site is bounded by: Thomas Alton Boulevard, with existing townhouse and single family residential development beyond, to the south; a 3-storey residential townhouse development to the west; Palladium Way, with a future industrial business park beyond, to the north; and two existing office/commercial buildings, with Appleby Line beyond, to the east. Highway 407 is located approximately 550 m north of the site. A Key Plan is included as Figure 1. This report is based on the Concept Site Plan prepared by Icon Architects Inc., dated September 30, The Concept Site Plan is included as Figure NOISE SOURCES 2.1 TRANSPORTATION NOISE SOURCES The main transportation noise sources with potential for impact on the proposed development will be road traffic on: Appleby Line to the east; Palladium Way to the north; Thomas Alton Boulevard to the south; and Highway 407 to the north.

6 VALCOUSTICS CANADA LTD Thomas Alton Boulevard Phases 1 and 2/Burlington Noise 2 nd Update File: Page 3 Noise from Dundas Street to the south (approximately 800 m away), existing commercial/industrial uses to the south (the Walmart and strip mall development, approximately 300 m away) and to the east (Canada Brick which is approximately 770 m away and Dufferin Custom Concrete approximately 570 m away) are far enough removed and/or are significantly screened by intervening development that adverse noise impact is not expected. Thus, these sources have not been considered further Road Traffic Future (year 2031) road traffic volumes and composition data for Appleby Line were obtained from the Region of Halton. The traffic data obtained accounts for the future expansion of Appleby Line from a 4-lane to a 6-lane road. A growth rate of 2% compounded annually was applied to obtain year 2036 volumes, as per the Region of Halton s guidelines for regional road noise assessments (See Section 3.2 below). Current (year 2013) turning movement count (TMC) data for Palladium Way at Appleby Line and Thomas Alton Boulevard at Appleby Line were obtained from the Region of Halton. Future (year 2021) road traffic data for Palladium Way and Thomas Alton Boulevard was also obtained from the Alton Phase 5 Traffic Impact Study dated October 2012, prepared by Paradigm Transportation Solutions Ltd. As projected traffic volumes in the study were higher than projections based on the TMC data, the volumes from the Traffic Study were used in this assessment. 24-hour volumes for both roadways were obtained by multiplying the indicated peak hour data by a factor of 10. Since future truck percentages were not provided in the Traffic Study, the truck percentages for Thomas Alton Boulevard and Palladium Way were assumed to be similar to the truck percentages provided for Appleby Line. This is considered conservative. Road traffic volumes applicable to the year 2011 for Highway 407 were obtained from the University of Toronto Data Management Group. A multiplication factor of 1.2 was used to convert the 14-hour counts to 24-hour volumes. A day/night split of 90%/10% was used. The ratio of heavy trucks to medium trucks was assumed to be 75%/25% as recommended by the Ministry of Transportation (MTO) for freeways. A growth rate of 2% compounded annually was applied to obtain future (year 2026) traffic volumes for Palladium Way, Thomas Alton Boulevard and Highway 407. Table 1 summarizes the road traffic data. The road traffic data correspondence is included in Appendix A. 2.2 STATIONARY NOISE SOURCES The main stationary noise sources with potential to adversely impact the proposed development are the future industrial/commercial business park to the north, on the north side of Palladium Way and the two existing two-storey office/commercial buildings to the east Industrial Business Park There is a proposed industrial/commercial development located in Block 23 of the overall 3204 Appleby Line development, at the northwest corner of Palladium Way and Appleby Line. The proposed industrial/commercial development will consist of five buildings. Three of the buildings (on the west side of the site) are proposed industrial/ commercial uses and two are proposed office buildings (fronting toward Appleby Line).

7 VALCOUSTICS CANADA LTD Thomas Alton Boulevard Phases 1 and 2/Burlington Noise 2 nd Update File: Page 4 The proposed industrial/business park buildings must be designed to meet the noise guideline limits in MOE Publication NPC-300. The onus for implementation of any mitigation that may be required would be the responsibility of the developer/builder of the industrial/business park buildings. In addition, an Environmental Noise Impact Assessment for the business park as well as two updates were completed by VCL, dated December 21, 2006, December 11, 2007 and July 24, 2013 (herein referred to as the Study ). The Study assessed the noise impacts from assumed operations at the business park at a number of the closest proposed residential dwellings in the area. Representative receptor locations on the subject site were assessed as part of that report. The Study concluded that no adverse noise impact was anticipated at any of the residential receptors considered, based on the operational assumptions used. The Study also concluded that, once specific information regarding the actual operations in the industrial/commercial buildings was known, the Study should be updated. As such, any noise excesses determined as part of the more detailed assessments done for the business park buildings would require proper mitigation. The implementation of such mitigation, would be the sole responsibility of the developer/builder of the business park buildings. Thus, the industrial/commercial lands would be expected to be designed to meet the applicable sound level limits at the subject site and these buildings have not been considered further as part of this report Existing Office/Commercial Development to the East VCL previously completed an Environmental Noise Impact Study, dated March 12, 2011, for Phase 1 of the proposed commercial development to the east. Phase 1 consists of two commercial multi-tenant office buildings fronting onto Appleby Line. The two commercial buildings in Phase 1 have been built and are currently operational. The analysis has been updated to account for the as-built conditions including sound measurement data for the roof top mechanical equipment. The assessment of these buildings has been included in this report. It is our understanding that there is a proposed Phase 2 of the development. However, at the time of the writing of this report, Phase 2 of the development has not yet been approved. As part of the approval process, a noise report will need to be done and any noise mitigation required to ensure compliance with the applicable guidelines will be the responsibility of the developer of that site. Thus, the Phase 2 development has not been considered further. 3.0 ENVIRONMENTAL NOISE GUIDELINES 3.1 MOE PUBLICATION NPC-300 The applicable noise guidelines for new residential development are those in MOE Publication NPC-300, Environmental Noise Guideline, Stationary and Transportation Sources - Approval and Planning. MOE Publication NPC-300 noise guideline has replaced the four existing noise guidelines (Publications LU-131, NPC-205 and NPC-232, as well as Noise Assessment Criteria in Land Use Planning: Requirements, Procedures and Implementation) in Ontario.

8 VALCOUSTICS CANADA LTD Thomas Alton Boulevard Phases 1 and 2/Burlington Noise 2 nd Update File: Page 5 The environmental noise guidelines of the MOE, as provided in Publication NPC-300, are discussed briefly below and summarized in Appendix C Transportation Noise Source Guidelines Architectural Elements In the daytime, the indoor criterion for road noise is L eq Day (1) of 45 dba for sensitive spaces such as living/dining rooms, dens and bedrooms. At night, the indoor criterion for road noise is L eq Night (2) of 45 dba for sensitive spaces such as living/dining rooms and dens and 40 dba for bedrooms. The architectural design of the building envelope (walls, windows, etc.) must provide adequate sound isolation to achieve these indoor sound level limits, based on the applicable outdoor sound level on the facades Ventilation In accordance with the MOE noise guideline for road traffic sources, if the daytime sound level, L eq Day, at the exterior face of a noise sensitive window is greater than 65 dba, means must be provided so that windows can be kept closed for noise control purposes and central air conditioning is required. For daytime sound levels between 56 dba and 65 dba inclusive, there need only be the provision for adding air conditioning at a later date. A warning clause advising the occupant of the potential interference with some activities is also required. At nighttime, air conditioning would be required when the sound level exceeds 60 dba (L eq Night ) at a noise sensitive window (provision for adding air conditioning is required when greater than 50 dba) Outdoors For OLA s, the guideline is 55 dba L eq Day (0700 to 2300 hours), with an excess not exceeding 5 dba considered acceptable if it is technically not practicable to achieve the 55 dba objective, providing warning clauses are registered on title. Note that for road traffic sources, a balcony is not considered an OLA, unless it is the only OLA for the occupant and it is: at least 4 m in depth; and unenclosed Stationary Noise Sources Stationary sources are treated differently by the MOE guideline than transportation sources of noise such as road traffic and railways. Stationary source noise criteria used for noise impact assessment are dependent on the type of area and the ambient sound environment. The site and area are Class 1; i.e., an area where the ambient sound environment is dominated by urban hum, primarily traffic noise. This is due to the proximity to the area road network. (1) L eq Day - 16 hour energy equivalent continuous sound level ( hours). (2) L eq Night - 8 hour energy equivalent continuous sound level ( hours).

9 VALCOUSTICS CANADA LTD Thomas Alton Boulevard Phases 1 and 2/Burlington Noise 2 nd Update File: Page Sound Level Criteria MOE Publication NPC-300 states that the guideline limits shall be defined by the higher of the ambient sound level, due to road traffic noise, or the minimum exclusion limits for a Class 1 area of 50 dba daytime (0700 to 1900 hours), 50 dba evening (1900 to 2300 hours) and 45 dba nighttime (2300 to 0700 hours). The limits apply at a noise sensitive plane of window (at all times) or at an outdoor point of reception in the daytime and evening only. The guideline does not apply to outdoor points of reception at night. The MOE requires a worst case one-hour operating scenario be analysed. This would typically occur when the background ambient sound level is at a minimum and the noise generated from the stationary noise sources is at a maximum. The guideline limits apply to habitable spaces such as living/dining/family rooms and sleep areas. No indoor sound level guidelines are provided for stationary sources Applicable Guideline Limits In this assessment, the minimum exclusion limits have been take to apply. This is considered conservative. 3.2 REGION OF HALTON The Region of Halton Noise Abatement Policy for Regional Roads (Retrofit Locations) and New Developments has been used in this report. The Region s criteria for OLA s is 55 dba. The Region has decided on a maximum sound barrier height of 3.0 m, where a sound barrier is needed adjacent to Regional Roads (for example Appleby Line). Also, the criteria for traffic noise prediction is required to be based on the 20-year traffic forecast for the adjacent regional roads. 4.0 NOISE IMPACT ASSESSMENT - TRANSPORTATION NOISE SOURCES 4.1 ROAD TRAFFIC SOUND LEVELS Using the road data in Table 1, the sound levels, in terms of L eq Day and L eq Night, were determined using STAMSON V5.04 ORNAMENT, the computerized road traffic noise prediction model of the MOE. For the two 19-storey high-rise towers, the daytime and nighttime sound levels at the building faces were calculated at a height of 55.5 m above grade, corresponding to a top (19 th ) storey plane of window. The conventional townhouse units were assumed to be three storeys. The daytime and nighttime sound levels at the building faces were calculated at a height of 7.5 m above grade, corresponding to a top (3 rd ) storey plane of window. The stacked townhouse units were assumed to be four storeys. The daytime and nighttime sound levels at the building faces were calculated at a height of 10.5 m above grade, corresponding to a top (4 th ) storey plane of window.

10 VALCOUSTICS CANADA LTD Thomas Alton Boulevard Phases 1 and 2/Burlington Noise 2 nd Update File: Page 7 The daytime OLA sound levels at the rear yards were calculated at a standing height of 1.5 m above grade, 3 m from the rear wall and aligned with the midpoint of the applicable facade. Inherent screening of each building face due to its orientation to the noise source was taken into account. Screening effects from the existing office buildings to the east have been accounted for. However, additional screening from the future industrial business park to the north was not accounted for, since it is not yet constructed. At the high-rise buildings, the highest unmitigated daytime/nighttime sound levels of 68 dba/61 BA are predicted to occur at the north facade of the west tower. At the townhouse blocks, the highest unmitigated daytime/nighttime sound levels of 64 dba/58 dba are predicted to occur at the north facade of Block 1. The highest unmitigated daytime OLA sound level of 61 dba is predicted to occur at the rear yard of the northerly unit of Block 1. Table 2 summarizes the predicted sound levels. A sample sound level calculation from the road sources is contained in Appendix C. 4.2 NOISE ABATEMENT REQUIREMENTS The noise control measures for transportation noise sources can generally be classified into two categories which are interrelated, but which can be treated separately for the most part: (a) (b) Architectural elements to achieve acceptable indoor noise guidelines; Design features to protect the OLA s. Noise abatement requirements are summarized in Table 3 and the notes to Table Indoors Architectural Elements The indoor noise level guidelines can be achieved by using appropriate construction for exterior walls, windows and doors. In determining the worst-case architectural requirements for the highrise building, wall and window areas were each assumed to be 50% of the associated floor area on the facade associated with the bedroom and living/dining room windows. For the townhouse units, wall and windows areas were assumed to be 70% and 30%, respectively, of the associated floor area on the facade associated with the bedroom and living/dining room windows. It is understood that the 19-storey residential towers will be constructed using a window wall system, with a combination of vision glass and spandrel panel. If the spandrel panel is designed to meet an STC rating of 43 (which is typical), minor upgrades to the vision panel system would be required. The vision panel windows would need to meet a minimum STC rating of 32. For the podium, exterior wall construction meeting an STC rating of 37 and exterior window construction meeting an STC rating of 30 will be sufficient to achieve the indoor noise guideline criteria of the MOE.

11 VALCOUSTICS CANADA LTD Thomas Alton Boulevard Phases 1 and 2/Burlington Noise 2 nd Update File: Page 8 At all of the townhouse blocks, exterior wall and window construction meeting the minimum nonacoustical requirements of the OBC will be sufficient achieve the indoor noise guideline criteria of the MOE. For walls, a typical exterior facade construction which meets the minimum non-acoustical requirements of the OBC would be expected to achieve the requirement of STC 37. For windows, double-glazing configurations meeting the minimum non-acoustical requirements of the OBC would be expected to achieve STC 28. Note, the window frames themselves must also be designed to ensure that the overall sound isolation performance for the entire window unit meets the sound isolation requirement. This should be confirmed by the window manufacturer through the submission of acoustical test data. The final sound isolation requirements should be reviewed when architectural plans are developed. Wall and window constructions should also be reviewed at this point to ensure that they will meet the required sound isolation performance. This is typically required by the Municipality at the time of building permit application Ventilation Requirements The daytime and nighttime sound levels at the two 19-storey high-rise residential towers and the podium are such that mandatory air conditioning is required. At Blocks 1, 3 and 7 to 12, the provision for adding air conditioning is required. For low rise construction, the provision for addition air conditioning typically takes the form of a ducted forced air heating system suitably sized to allow the future installation of air conditioning at the occupants discretion. Table 3 summarizes the architectural exterior wall/window and ventilation requirements Outdoors The unmitigated daytime sound levels in the rear yards of the three northerly units in Block 1 are predicted to exceed the 55 dba design objective. To meet the 55 dba design objective, a 2.4 m high barrier at the northerly unit could be used. However, a 1.8 m high sound barrier at the northerly unit would mitigate the daytime sound level at the northerly unit to 57 dba and the daytime sound levels at the second and third units to 55 dba. The sound level at the northerly unit is within the maximum permitted by the MOE noise guideline, provided warning clauses are registered on title. The unmitigated daytime sound levels in the rear yards of the two southerly units in Block 3 are predicted to exceed the 55 dba design objective. To meet the 55 dba design objective, a 1.8 m high sound barrier at the southerly unit is required. This would also mitigate the daytime sound level at the second southerly unit to below 55 dba. Any balconies/terraces that may be present are anticipated to be less than 4.0 m in depth. Thus, according to the MOE guidelines, these areas do not require noise control measures. Figure 2 shows the heights and locations of the sound barriers. The above sound barrier requirements were based on flat topography. The sound barrier requirements should be checked when the grading information is available.

12 VALCOUSTICS CANADA LTD Thomas Alton Boulevard Phases 1 and 2/Burlington Noise 2 nd Update File: Page 9 The sound barriers must be of solid construction with no gaps, cracks or holes (except for small localized openings required for water drainage) and must have a minimum surface weight of 20 kg/m². A variety of materials are available, including concrete, masonry, glass, wood, specialty composite materials, or a combination of the above Warning Clauses Where the sound level guidelines are exceeded, appropriate warning clauses should be registered on title to make future occupants aware of the potential noise situation. The warning clause requirements and the appropriate wording are given in Table 3 and in the notes to Table 3, respectively. 5.0 NOISE IMPACT ASSESSMENT - STATIONARY NOISE SOURCES The sources of noise at the existing office buildings to the east are the rooftop mechanical equipment. The assessment of noise impact from these buildings is based on sound measurement data for the rooftop mechanical equipment obtained by VCL staff during a site visit on September 11, PREDICTION METHOD To assess the noise impact on the proposed development, a 3-D acoustical model was developed using CadnaA Version 4.4 environmental noise modelling software, which implements the methods of calculation described in ISO standard Acoustics- Attenuation During Propagation Outdoors. 5.2 ROOFTOP MECHANICAL EQUIPMENT There are 16 rooftop HVAC units and one exhaust fan at the north commercial building and 11 rooftop HVAC units at the south commercial building. Sound data and measured source heights for these units are summarized in Table 4. Most of the HVAC units are Carrier Brand. There were a few units that were York Brand. The exhaust fan was a Penn Barry unit. It should be noted that some of the rooftop HVAC units were not operating during the site visit/measurements. Where possible, the non-operating units were modelled using measurement data acquired for operating units with the same make and model numbers. None of the Carrier Brand 7.5 ton or 5 ton unit types were operating during the site visit. These units were modelled using the measured sound data for the 10 ton Carrier Brand units (Source ID: S_RTU02, a 10 ton unit). Since the actual unit sizes are smaller, using the sound data for the larger unit is considered conservative. Figure 3 shows locations of the rooftop HVAC units. 5.3 ASSESSMENT RECEPTORS The assessment was done using the Building Evaluation feature in the CadnaA software. This feature calculates a sound level at a grid of receptor points around all facades and at every storey height of the building. The Building Evaluation tool was used to identify the worst case locations on the subject buildings. Point receptors were added at these worst case locations for reporting purposes. The receptors used were:

13 VALCOUSTICS CANADA LTD Thomas Alton Boulevard Phases 1 and 2/Burlington Noise 2 nd Update File: Page 10 R01 - east facade of western 19-storey high-rise building, at a height of 19.5 m. R02 - east facade of podium building, at a height of 16.5 m. R03 - east facade of eastern 19-storey high-rise building, at a height of 16.5 m. R04 - east facade of eastern stacked townhouse unit in Block 7, at a height of 10.5 m. R05 - east facade of eastern stacked townhouse unit in Block 12, at a height of 10.5 m. 5.4 OPERATING SCENARIOS Two operating scenarios with different levels of activity were considered. The scenarios considered reflect operating conditions that would not be expected to occur on a regular basis, and perhaps only occasionally. In practice, it is expected that actual operating activities will be less than those considered in this report. The two operating scenarios analysed are: Daytime and evening hours ( ): all rooftop mechanical equipment are operating at 100% duty cycle (operating for the full hour). Nighttime hours ( ): all the rooftop HVAC mechanical equipment are on 50% of the time (operating for 30 minutes per hour); exhaust fan operating for the full hour. 5.5 PREDICTED SOUND LEVELS Table 5 summarizes the predicted sound levels. Figure 3 shows the predicted site generated sound levels. As shown in Table 5, as well as on Figure 3, the applicable MOE noise guidelines are predicted to be met at all assessment receptors. Therefore, noise mitigation is not required for these sources Future Scenario There is one location on the north building and seven locations on the south building designated for the future installation of rooftop mechanical equipment. Thus, a future scenario was also assessed, assuming mechanical units installed at these future locations. The future equipment were all assumed to be 10-ton units, the largest and with the highest sound levels of the existing installed units. As none of the current units are larger than 10 tons, and the majority are smaller than 10 tons, this approach is considered conservative. The measured sound level data and unit height used to model these future units was that for S_RTU02. The results of the future scenario assessment indicate compliance with the applicable MOE noise guidelines at all assessment receptors. Table 6 and Figure 4 show the predicted sound levels for the future scenario. Therefore, noise mitigation is not required for these sources.

14 VALCOUSTICS CANADA LTD Thomas Alton Boulevard Phases 1 and 2/Burlington Noise 2 nd Update File: Page NOISE IMPACT FROM THE DEVELOPMENT The main source of noise associated with the high rise portion development, with the potential for adverse impact on surrounding buildings, is the mechanical equipment. Mechanical equipment interfacing to the outdoors must comply with the MOE noise guideline limits in NPC-300. By proper engineering design, all requirements can be met and no adverse noise impact would be created for surrounding uses. Appropriate choice of location, equipment type, and noise control features should be considered during detailed design for such items as rooftop equipment and air intakes and exhausts, including underground parking garage ventilation systems. Any parking garage air shafts located immediately adjacent to residential uses, in addition to appropriate choice of fan type, may need special noise control treatment such as acoustically lining the shaft or providing silencers. For any emergency generators, appropriate steps should be taken to ensure that the equipment placement, treatment, and the routine testing schedule will not generate adverse noise impact on neighbouring properties. The generator will require silencers on the intake and exhaust cooling air paths, as well as a muffler on the combustion exhaust. No significant noise impact is expected from the townhouse units. 7.0 CONCLUSIONS With appropriate acoustical design of the development, a suitable acoustical environment can be provided and the applicable MOE noise guideline requirements met. The approvals and administrative procedures are available to ensure that the acoustical requirements are implemented. are recommended to advise the future occupants of the potential noise situation. 8.0 REFERENCES 1. PC STAMSON 5.04, Computer Program for Road Traffic Noise Assessment, Ontario Ministry of the Environment and Climate Change. 2. Building Practice Note No. 56: "Controlling Sound Transmission into Buildings", by J. D. Quirt, Division of Building Research, National Council of Canada, September "Environmental Noise Assessment in Land-Use Planning 1987", Ontario Ministry of the Environment, February 1987, ISBN "Road and Rail Noise: Effects on Housing", Canada Mortgage and Housing Corporation, Publication NHA 5156, 81/ Environmental Noise Guideline, Stationary and Transportation Sources - Approval and Planning, MOE Publication NPC-300, October Environmental Noise Assessment, 3204 Appleby Line, Proposed Mixed Use Development, City of Burlington, Region of Halton, Valcoustics Canada Ltd., Project: , May 12, 2005.

15 VALCOUSTICS CANADA LTD Thomas Alton Boulevard Phases 1 and 2/Burlington Noise 2 nd Update File: Page Environmental Noise Impact Assessment, Burlington Business Park, City of Burlington, Region of Halton, Valcoustics Canada Ltd., Project: , December 21, Environmental Noise Assessment, Burlington Phase 5, Proposed Residential Apartment Building Development, in the Vicinity of Thomas Alton Boulevard and Appleby Line, City of Burlington, Valcoustics Canada Ltd., Project: , November 6, Addendum Letter #1 to Environmental Noise Assessment, Burlington Phase 5, Proposed Residential Apartment Building Development, in the Vicinity of Thomas Alton Boulevard and Appleby Line, Alton Community, City of Burlington, Valcoustics Canada Ltd., Project: , March 27, Environmental Noise Impact Study, Appleby Line and Palladium Way, Phase 1, Proposed Commercial Development, Southwest Corner of Appleby Line and Palladium Way, City of Burlington, Valcoustics Canada Ltd., Project: , March 17, Alton Phase 5 Traffic Impact Study, Paradigm Transportation Solutions Ltd., October Environmental Noise Assessment - Update, 4853 Thomas Alton Boulevard, Phases 1 and 2, Proposed Residential Development, City of Burlington, Valcoustics Canada Ltd., Project: , September 28, SN/ML/gks J:\2004\104369\400\Reports\4853 Thomas Alton Blvd-Noise 2nd Update Fnl.wpd

16 VALCOUSTICS CANADA LTD Thomas Alton Boulevard Phases 1 and 2/Burlington Noise 2 nd Update File: Page 13 TABLE 1 ROAD TRAFFIC DATA Roadway AADT (1) % Trucks Medium Heavy Speed Limit (kph) Appleby Line (2) Highway 407 Eastbound (3) Highway 407 Westbound (3) Thomas Alton Boulevard (4) Palladium Way (4) Notes: (1) AADT Annual Average Daily Traffic. (2) Future (2031) road traffic volume and composition data for Appleby Line was obtained from the Region of Halton Transportation Services. Appleby line will be expanded from a 4-lane to a 6-lane road prior to 2031, and the future traffic data reflects this condition. As per the Region of Halton s guideline for regional roads, traffic volumes shown were further projected to the year 2036 at a growth rate of 2% compounded annually. (3) Obtained from the University of Toronto Data Management Group. The data was projected to the year 2026 using a 2% growth rate compounded annually. The truck split was assumed to be 75%/25% heavy/medium as recommended by the MTO for freeways. (4) Road traffic data (year 2021) was obtained from the Alton Phase 5 Traffic Impact Study prepared by Paradigm Transportation Solutions Ltd., dated October Truck volume percentages were assumed to be the same as those on Appleby Line. The data was projected to year 2026 using a 2% growth rate compounded annually.

17 VALCOUSTICS CANADA LTD Thomas Alton Boulevard Phases 1 and 2/Burlington Noise 2 nd Update File: Page 14 TABLE 2 PREDICTED FUTURE UNMITIGATED SOUND ENERGY LEVELS Location (1) Source Distance (m) (2) L eq Day (3) (dba) L eq Night (3) (dba) Appleby Line Northbound Appleby Line Southbound East High Rise Tower (East Facade) Thomas Alton Boulevard Palladium Way Highway 407 Eastbound Highway 407 Westbound TOTAL Appleby Line Northbound Appleby Line Southbound West High Rise Tower (North Facade) Palladium Way Highway 407 Eastbound Highway 407 Westbound TOTAL Appleby Line Northbound Appleby Line Southbound Residential Tower Podium (North Facade) Palladium Way Highway 407 Eastbound Highway 407 Westbound TOTAL Appleby Line Northbound Appleby Line Southbound Block 1 Northerly Unit (North Facade) Palladium Way Highway 407 Eastbound Highway 407 Westbound TOTAL /cont d

18 VALCOUSTICS CANADA LTD Thomas Alton Boulevard Phases 1 and 2/Burlington Noise 2 nd Update File: Page 15 TABLE 2 (continued) PREDICTED FUTURE UNMITIGATED SOUND LEVELS Location (1) Source Distance (m) (2) L eq Day (3) (dba) L eq Night (3) (dba) Appleby Line Northbound Appleby Line Southbound Block 1 Northerly Unit (OLA) Palladium Way Highway 407 Eastbound Highway 407 Westbound TOTAL 61 Block 1 2 nd Northerly Unit (OLA) Block 1 3 rd Northerly Unit (OLA) Palladium Way Palladium Way Appleby Line Northbound Block 3 Southerly Unit (South Facade) Appleby Line Southbound Thomas Alton Boulevard TOTAL Block 3 Southerly Unit (OLA) Block 3 2 nd Southerly Unit (OLA) Block 6 Easterly Unit (East Facade) Thomas Alton Boulevard Thomas Alton Boulevard Appleby Line Northbound Appleby Line Southbound TOTAL Appleby Line Northbound Notes: Block 7 Easterly Unit (East Facade) Appleby Line Southbound Thomas Alton Boulevard TOTAL (1) See Figure 2. (2) Distance indicated is from centreline of noise source to receptor point. (3) Daytime and nighttime calculations were done at a top storey unit of a receptor height of 55.5 m for the residential towers, 16.5 m for the podium, 7.5 m for the conventional and back-to-back townhouses and 10.5 m for the stacked townhouses, representing the plane of a fourth storey window. The daytime predictions at an OLA receptor were done at a height of 1.5 m above grade.

19 VALCOUSTICS CANADA LTD Thomas Alton Boulevard Phases 1 and 2/Burlington Noise 2 nd Update File: Page 16 TABLE 3 RECOMMENDED NOISE ABATEMENT MEASURES Buildings Air Conditioning (1) Exterior Wall (2) Window STC Rating (3) Sound Barrier (4) Warning Clauses (5) High-Rise Building Towers Podium Building Mandatory STC 43 STC 32 None A + B + D Mandatory STC 37 STC 30 None A + B + D Blocks 1 and 3 Provision for adding OBC OBC 1.8 m (see Section 3.2) A + C + D Blocks 7 to 12 Provision for adding OBC OBC None A + C + D All remaining blocks No special acoustical requirements D Notes follows on the next page

20 VALCOUSTICS CANADA LTD Thomas Alton Boulevard Phases 1 and 2/Burlington Noise 2 nd Update File: Page 17 Notes To Table 3 (1) The provision for adding air conditioning typically takes the form of a forced air heating systems suitably sized to allow the future installation of air conditioning. (2) STC - Sound Transmission Class Rating (Reference ASTM-E413). The requirements are based on assumed wall to associated indoor floor areas (50% wall to floor area for the high rise buildings, 70% wall to floor area for the townhouse units, for living rooms/bedrooms). The requirements should be confirmed when building plans are available. OBC - indicates any construction complying with the minimum non-acoustical requirements of the Ontario Building Code. (3) A sliding glass walkout door should be considered as a window and be included in the percentage of glazing. The requirements are based on assumed window to associated indoor floor area (50% window to floor area for the high rise building, 30% window to floor area for the townhouse units, for living rooms/bedrooms). The requirements should be confirmed when building plans are available. OBC - indicates any construction complying with the minimum non-acoustical requirements of the Ontario Building Code. (4) Sound barriers must be of solid construction with no gaps, cracks or holes and must have a minimum surface density of 20 kg/m². A variety of materials are available including wood, masonry, composites, plastics, earth berms, or a combination of materials. (5) Warning clauses to be registered on title and be included in Offers of Purchase and Sale and Leases on designated units: A. Purchasers and tenants/lessees are advised that despite the inclusion of noise control features in this development and within the building units, sound levels due to increasing road traffic may on occasion interfere with some activities of the dwelling occupants as the sound levels exceed the Ministry of the Environment s noise criteria. B. This dwelling has been supplied with a central air conditioning system which will allow windows and exterior doors to remain closed, thereby ensuring that the indoor sound levels are within the Municipality s and the Ministry of the Environment s noise criteria. C. This dwelling unit has been fitted with a forced air heating system and the ducting, etc. was sized to accommodate future air conditioning. Installation of central air conditioning by the occupant will allow windows and exterior doors to remain closed, thereby ensuring that the indoor sound levels are within the Ministry of the Environment s noise criteria. (Note: The location and installation of the outdoor air conditioning device should be done so as to minimize the noise impacts both on and in the immediate vicinity of the subject property. Residential air conditioners of 38,900 BTU/H or less should have an ARI sound rating of 7.6 bels or less.) D. Purchasers are advised that due to the proximity of the adjacent Business Park and Commercial Uses, sound levels from the Business Park and Commercial Uses facilities may at times be audible. (6) Conventional roof construction meeting Ontario Building Code requirem ents is satisfactory in all cases. (7) All exterior doors shall be fully weatherstripped.

21 VALCOUSTICS CANADA LTD Thomas Alton Boulevard Phases 1 and 2/Burlington Noise 2 nd Update File: Page 18 TABLE 4 ROOFTOP MECHANICAL EQUIPMENT SUMMARY (1) Source ID Make and Model Unit Height (m) (2) Sound Power Level (dba) North Building N_RTU01 Carrier 48TCEA04A2A1A0B0A0 (3 ton) N_RTU02 Carrier 48TCEA04A2A1A0B0A0 (3 ton) (3) N_RTU03 Carrier 48TCED09A2A1A0B0A0 (8.5 ton) (4) N_RTU04 Carrier 48TCEA04A2A1A0B0A0 (3 ton) (3) N_RTU05 Carrier 48TCEA04A2A1A0B0A0 (3 ton) N_RTU06 Carrier 48TCEA04A2A1A0B0A0 (3 ton) N_RTU07 Carrier 48TCED08A2A1A0B0A0 (7.5 ton) (5) N_RTU08 Carrier 48TCED12A2A1A0B0A0 (10 ton) N_RTU09 Carrier 48TCEA05A2A1A0B0A0 (4 ton) N_RTU10 Carrier 48TCED12A2A1A0B0A0 (10 ton) N_RTU11 Carrier 48TCED09A2A1A0B0A0 (8.5 ton) (4) N_RTU12 Carrier 48TCEA04A2A1A0B0A0 (3 ton) (3) N_RTU13 Carrier 48TCEA04A2A1A0B0A0 (3 ton) (3) N_RTU14 Carrier 48TCEA04A2A1A0B0A0 (3 ton) N_RTU15 Carrier 48TCED09A2A1A0B0A0 (8.5 ton) N_RTU16 Carrier 48TCEA06A2A1A0B0A0 (5 ton) (5) N_RTU17 Penn Barry DX11R (exhaust fan) South Building S_RTU01 Carrier 48TCED09A2A1A0B0A0 (8.5 ton) S_RTU02 Carrier 48TCED12A2A1A0B0A0 (10 ton) S_RTU03 Carrier 48TCED08A2A1A0B0A0 (7.5 ton) (5) S_RTU04 York ZXG04E5C1AA1A111A2 (3 ton) S_RTU05 York ZXG04E5C1AA1A111A2 (3 ton) S_RTU06 York ZXG04E5C1AA1A111A2 (3 ton) S_RTU07 Carrier 48TCED08A2A1A0B0A0 (7.5 ton) (5) S_RTU08 York ZXG05F5C1AA1A111A1 (4 ton) S_RTU09 Carrier 48TCEA04A2A1A0B0A0 (3 ton) S_RTU10 York ZXG05F5C1AA1A111A1 (4 ton) S_RTU11 Carrier 48TCED12A2A1A0B0A0 (10 ton) Notes: (1) See Figure 3 for source locations. (2) Unit height above top of roof (3) Sound power data assumed to be the same as N_RTU06. (4) Sound power data assumed to be the same as N_RTU15. (5) Sound power data assumed to be the same as S_RTU02..

22 VALCOUSTICS CANADA LTD Thomas Alton Boulevard Phases 1 and 2/Burlington Noise 2 nd Update File: Page 19 TABLE 5 PREDICTED STATIONARY SOURCE SOUND LEVELS EXISTING SCENARIO Receptor (1) Hourly Sound Levels (dba) Applicable Guideline Limit (2) (dba) Daytime/Evening Nighttime Daytime/Evening Nighttime R R R R R Notes: (1) See Figure 3. Receptor R01 was taken at a height of 19.5 m above grade representing the 7th-storey windows at the west 19 storey tower. Receptor R02 was taken at a height of 16.5 m above grade representing the 6 th storey of the podium. Receptor R03 was taken at a height of 16.5 m above grade representing the 6th-storey windows at the east19 storey tower. Receptors R04 and R05 were taken at a height of 10.5 m above grade representing the 4th-storey windows of the townhouse blocks. These receptors represent the worst case locations. (2) MOE Class 1 minimum exclusion limits. TABLE 6 PREDICTED STATIONARY SOURCE SOUND LEVELS FUTURE SCENARIO Receptor (1) Hourly Sound Levels (dba) Applicable Guideline Limit (2) (dba) Daytime/Evening Nighttime Daytime/Evening Nighttime R R R R R Notes: (1) See Figure 3. Receptor R01 was taken at a height of 19.5 m above grade representing the 7th-storey windows at the west 19 storey tower. Receptor R02 was taken at a height of 16.5 m above grade representing the 6 th storey of the podium. Receptor R03 was taken at a height of 16.5 m above grade representing the 6th-storey windows at the east19 storey tower. Receptors R04 and R05 were taken at a height of 10.5 m above grade representing the 4th-storey windows of the townhouse blocks. These receptors represent the worst case locations. (2) MOE Class 1 minimum exclusion limits.

23

24

25 Legend North Building North Building ay D/E: Daytime/Evening ( ) N_RTU10 N_RTU09 N_RTU07 N_RTU08 la d N_RTU11 N_RTU12 Pa l N_RTU17 Ap pl N_RTU14 N_RTU N_RTU08 N_RTU13 N_RTU06 N_RTU15 N_RTU04 N_RTU16 N_RTU03 N_RTU02 N_RTU11 N_RTU12 eb y N_RTU01 N_RTU10 N_RTU09 N_RTU iu m W N: Nighttime ( ) Point Source Li ne N_RTU13 N_RTU06 N_RTU17 N_RTU14 N_RTU Receptor N_RTU15 N_RTU04 N_RTU16 N_RTU03 R02 D/E: 44 dba N: 41 dba R01 D/E: 42 dba N: 39 dba N_RTU02 N_RTU01 S_RTU11 S_RTU09 S_RTU07 S_RTU08 S_RTU05 S_RTU04 19 r to -s ey Blo ck 2 6 Block 5 Block n to l A as om h T 4 Blo ck Blo ck Blo ck 10 S_RTU11 S_RTU09 S_RTU07 S_RTU08 S_RTU06 S_RTU05 S_RTU04 S_RTU03 9 S_RTU02 S_RTU Block 11 S_RTU Blo ck Block 12 R05 D/E: 42 dba N: 39 dba B lvd Block South Building S_RTU01 7 Block S_RTU03 N.T.S. North Building Source ID's S_RTU02 R04 D/E: 42 dba N: 39 dba S_RTU ey or -st 9 1 Blo ck S_RTU10 R03 D/E: 44 dba N: 41 dba South Building J:\2004\104369\400\Analysis\Cadna\ Thomas Alton Blvd.cna South Building Source ID's N.T.S. Title Date Hourly Sound Levels (dba) Apr. 20, 2016 Project Name Project No Thomas Alton Blvd Figure 3 Date Plotted:

26 Legend North Building North Building ay D/E: Daytime/Evening ( ) N_RTU10 N_RTU09 N_RTU07 N_RTU08 la d N_RTU11 N_RTU12 Pa l N_RTU17 Future_N_RTU N_RTU08 N_RTU13 N_RTU06 Ap pl N_RTU14 N_RTU05 N_RTU15 N_RTU04 N_RTU16 N_RTU03 N_RTU02 N_RTU11 N_RTU12 eb y N_RTU01 N_RTU10 N_RTU09 N_RTU iu m W N: Nighttime ( ) Point Source Li ne N_RTU13 N_RTU06 N_RTU17 Future_N_RTU Receptor N_RTU14 N_RTU05 N_RTU15 N_RTU04 N_RTU16 N_RTU03 R02 D/E: 45 dba N: 42 dba R01 D/E: 43 dba N: 40 dba N_RTU02 N_RTU01 S_RTU10 S_RTU07 Future_S_RTU16 Future_S_RTU17 S_RTU08 Future_S_RTU15 S_RTU06 S_RTU y re st o 9- S_RTU11 Future_S_RTU18 S_RTU09 Future_S_RTU13 Future_S_RTU14 Future_S_RTU12 S_RTU04 19 r to -s n to l A as om h T Blo ck Blo ck Blo ck S_RTU09 Future_S_RTU16 S_RTU07 Future_S_RTU17 S_RTU08 Future_S_RTU15 S_RTU06 S_RTU05 Future_S_RTU13 Future_S_RTU Future_S_RTU12 S_RTU04 S_RTU03 9 S_RTU02 S_RTU Block S_RTU11 Future_S_RTU Blo ck Block 12 R05 D/E: 45 dba N: 42 dba S_RTU Blo ck Block 6 B lvd ey 1 Block South Building S_RTU01 7 Block Block N.T.S. North Building Source ID's S_RTU02 R04 D/E: 44 dba N: 41 dba S_RTU R03 D/E: 45 dba N: 42 dba Blo ck South Building J:\2004\104369\400\Analysis\Cadna\ Thomas Alton Blvd.cna South Building Source ID's N.T.S. Title Date Future Hourly Sound Levels (dba) Apr. 20, 2016 Project Name Project No Thomas Alton Blvd Figure 4 Date Plotted: