REP Atelier 292 OCH Phase 2 Noise Study Page 1 of 26

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1 REP Atelier 292 OCH Phase 2 Noise Study Page 1 of Robert Matta Project Manager Atelier 292 Architect Inc. 292 Main Street, Ottawa, Ontario K1S 1E1 Tel: +1 (613) x154 Fax: +1 (613) rmatta@atelier292.com Dear Robert, Atelier 292 Architect Inc Uplands Dr. Ottawa Community Housing Phase 2 Feasibility Noise Study We are pleased to present the following phase 2 environmental feasibility noise study for the new development for Ottawa Community Housing at 3225 Uplands Dr. located in Ottawa. The new development will consist of townhomes and triplex units located on Uplands Dr. This type of study is newly required by the City of Ottawa under the Environmental Noise Control Guidelines 2016 (ENCG), compliant with the Ministry of Environment s NPC-300. This study considered two different acoustic concerns: the noise generated from Uplands Dr. to the Plane of Windows of the new development as well as aircraft noise due to the proximity of the development to the Ottawa MacDonald-Cartier International Airport. These are the only sources of noise that will have an impact on the development. As this development consists of townhomes and triplex units, no significant noise impact is anticipated to the environment. The summary of our results may be found in Section 6.2 along with our acoustical recommendations. If you have any questions, please do not hesitate to contact us. Regards, Patrick Richard, M.Sc.E. Acoustical Consultant

2 REP Atelier 292 OCH Phase 2 Noise Study Page 2 of Introduction State of the Art Acoustik Inc. was commissioned by 292 Atelier Architects Inc. to complete a Phase 2 feasibility noise study as required by the City of Ottawa for the proposed 7 townhomes and 3 triplexes located at 3225 Uplands Dr. in Ottawa. We have followed the 2016 Environmental Noise Control Guidelines, which are compliant with the Ministry of Environment s NPC-300. In Section 2.0, the site plan of the development is shown and surrounding area is analyzed for possible noise sources which would impact the proposed development. This includes road and aircraft noise sources. In Section 3.0, the noise impact calculation procedure is described and in Section 4.0, the predicted noise impact from Uplands Dr. onto this development has been analyzed. Section 5.0 is an AIF analysis recommendations for any required upgrades to the exterior envelope of the building are discussed. Section 6.0 provides an analysis of aircraft noise onto the development and any exterior envelope recommendations necessary are provided. 2.0 Site Plan Evaluation 2.1 Project Description The proposed development consists of seven 2 story townhomes and three 2 two story triplex buildings. The proposed development is located at 3225 Uplands Dr. in Ottawa, Ontario. The area surrounding the development consists mostly of similar townhomes and apartments, with a large apartment building on the corner of Uplands Dr and Paul Anka Dr. being the only large structure nearby (~100 m away). As this building is significantly taller than the proposed townhomes and triplexes, any noise from mechanical equipment on the roof of the apartment building was not considered to be significant. 2.2 Outdoor Living Areas There are no planned outdoor living areas such as terraces or large backyards; therefore this analysis will not address them. 2.3 Site Plan Review The following Figure, 2.1, shows the location of the proposed development and the surrounding area including surface transportation noise sources. Uplands Dr. is the only surface transportation noise source that must be considered as it is within 100 m of the proposed development. Paul Anka Dr. is located approximately 150 m away and does not need to be considered, according to the City of Ottawa ENCG. Figure 2.2 shows a more detailed site plan with the locations of the townhomes and each triplex.

3 REP Atelier 292 OCH Phase 2 Noise Study Page 3 of 26 Location of 2 story townhouses (7) Location of 2 story triplexes (3) Figure 2.1 Surrounding area and location of proposed development at 3225 Uplands Dr. Figure 2.2 Detailed site plan for proposed development at 3225 Uplands Dr.

4 REP Atelier 292 OCH Phase 2 Noise Study Page 4 of NOISE IMPACT PROCEDURE 3.1 Procedure Used to Assess Noise Impacts This assessment uses the City of Ottawa - Environmental Noise Control Guidelines (ENCG), dated January 2016, to assess and mitigate noise from roads, transit ways, railways and aircraft. The maximum road noise levels for indoor areas that apply to this development are taken from Table 2.2b of the ENCG and summarized in Table 3.1 below. Time Indoor Leq Levels (dba) Class 1, 2 & 3 Areas Road Traffic/Light Rail Noise Level Limit (dba) 07:00 23:00 45 for living/dining areas of residences and sleeping quarters 23:00-07:00 40 for sleeping quarters Table 3.1 Criteria for Indoor Area Road Noise Levels The ENCG states that noise control studies are to be prepared when the indoor area is within the following setback distances from the road, highway and railway noise sources: 100m from an arterial road or a major collector, light rail corridor or bus rapid transitway 250m from an existing or proposed highway 300m from a proposed or existing rail corridor or secondary main railway line 500m from a 400-series provincial highway or principle main railway line This noise control study is required as the proposed development is less than 100m from Uplands Dr. 3.2 Noise Attenuation Requirements This section outlines the required noise control measures and warning clauses and when to apply them, as stipulated by the ENCG for placement within purchase agreements. If sound levels are predicted to be less than the specified criteria, no attenuation measures are required on the part of the proponent. If the predicted noise exceeds the criteria, the City of Ottawa recommends several attenuation measures. These attenuation measures may include any or all of the following: construction of a noise barrier wall and/or berm; installation of a forced air ventilation system with provision for central air; installation of central air; acoustically selected building façade components Where excessive noise levels may adversely affect the property or its use, the ENCG requires notices in the form of a Warning Clause to be placed on title in order to alert the buyer or renter of a possible environmental noise condition or a limitation on his/her property rights. The

5 REP Atelier 292 OCH Phase 2 Noise Study Page 5 of 26 notices on title must be included in the Development Agreement(s) and in the Agreement(s) or Offer(s) of Purchase and Sale. The City of Ottawa requires a Warning Clause whenever noise could meet or exceed 55 dba Leq 16 at the Outdoor Living Area or Plane of Window of any living or sleeping area prior to any noise mitigation. Table 3.2 provides the types of warning clauses and example text to be adapted into warning clauses. These warning clauses are taken from Appendix A of the ENCG which also states: A warning clause is not considered a form of noise mitigation. It is not acceptable therefore to use warning clauses in place of physical noise control measures to identify an excess over the MOE or City noise limits. TYPE Generic Extensive mitigation of indoor and outdoor amenity area Example Text Purchasers/tenants are advised that sound levels due to increasing road/rail/light Rail/transitway traffic may occasionally interfere with some outdoor activities as the sound levels may exceed the sound level limits of the City and the Ministry of the Environment. To help address the need for sound attenuation this development has been designed so as to provide an outdoor amenity area and indoor environment that is within provincial guidelines. Measures for sound attenuation include: A setback of buildings from the noise source, A acoustic barrier owned and maintained in the City right of way (or condominium right of way) Additionally this development includes trees and shrubs to screen the source of noise from occupants. Purchasers/tenants are advised that despite the inclusion of noise control features in the development and within the building units, sound levels due to increasing road/rail/light Rail/transitway traffic may, on occasion, interfere with some activities of the dwelling occupants as the sound levels exceed the sound level limits of the City and the Ministry of the Environment. To help address the need for sound attenuation this development includes: multi-pane glass; double brick veneer; an earth berm; and an acoustic barrier which is owned and maintained by the City (condominium corporation). To ensure that provincial sound level limits are not exceeded it is important to maintain these sound attenuation features. This dwelling unit has also been designed with the provision for adding central air conditioning at the occupant s discretion. Installation of central air conditioning will allow windows and exterior doors to remain closed, thereby ensuring that the indoor sound levels are within the sound level limits of the City and the Ministry of the Environment. Additionally this development includes trees and shrubs to screen the source of noise from occupants.

6 REP Atelier 292 OCH Phase 2 Noise Study Page 6 of 26 Purchasers/tenants are advised that sound levels due to increasing road/rail/light Rail/transitway traffic will interfere with outdoor activities as the sound levels exceed the sound level limits of the City and the Ministry of the Environment. To help address the need for sound attenuation this development includes: multi-pane glass; No outdoor double brick veneer; amenity area high sound transmission class walls. To ensure that provincial sound level limits are not exceeded it is important to maintain these sound attenuation features. This dwelling unit has been supplied with a central air conditioning system and other measures which will allow windows and exterior doors to remain closed, thereby ensuring that the indoor sound levels are within the sound level limits of the City and the Ministry of the Environment Table Warning Clause Types and Example Text from the City of Ottawa (from ENCG Table A1) 3.3 Building Component Assessment (AIF Analysis) According to the ENCG, when noise levels could exceed 55 dba at the Plane of Windows (POW) of a living area (day) or sleeping quarters (night) the exterior cladding system of the building envelope must be acoustically designed to ensure the indoor noise criteria is achieved. The City of Ottawa recognizes the Acoustic Insulation Factor (AIF 1 ) method as an appropriate analysis technique. To comply with the City of Ottawa policies, the building envelope will require a minimum AIF rating to provide the indoor noise level required for living, dining and bedrooms of residential dwellings as described below. The City of Ottawa s ENCG outlines the following maximum indoor Leq limits: maximum daytime indoor L eq for living spaces should be 45 dba maximum nightime indoor L eq for bedrooms should be 40 dba For the overall exterior wall of any room, the required AIF for road and rail transportation noise is: Required AIF = Outside L eq - Indoor L eq (Req) + 2dB (1) When the exterior is comprised of components, then the AIF required of each component is determined by the following equation 1 : Required AIF = Outside L eq - Indoor L eq (Req) + 10 log 10 (Number of Components) + 2dB (2) The required AIF is based on the Outside L eq, Indoor L eq required and the total number of exterior façade components. The AIF method allows for the number of components to be reduced if any component significantly exceeds the required AIF 1 :

7 REP Atelier 292 OCH Phase 2 Noise Study Page 7 of 26 If the AIF of any component exceeds the required AIF by 10 or more, the calculation should be repeated for the other components with the total number of components reduced by one. This reduction in the number of components lowers the required AIF for the others. 1 J.D. Quirt, Building Research Note: Acoustic Insulation Factor: A Rating for the Insulation of Buildings against Outdoor Noise, National Rearch Council [Revised June 1980]

8 REP Atelier 292 OCH Phase 2 Noise Study Page 8 of 26 Roadway Uplands Drive 4.0 Surface Transportation Study The following section describes our analysis of the road noise impact on the proposed development at 3225 Uplands Dr. Aircraft noise will be discussed Section Road Traffic Information For this study, the only major surface transportation noise source considered is traffic from Uplands Dr. This new development is farther than 100m from any other urban collector, therefore no other surface noise sources are considered. Uplands Drive is classified as a 2-Lane Major Collector with a posted speed limit of 50 km/hr. Table 4.1 below summarizes the roadway s parameters obtained from Table B1 on p. 75 of The City of Ottawa Environmental Noise Control Guidelines 2016, Appendix B: Table of Traffic and Road Parameters To Be Used For Sound Level Predictions for the respective roadway class. Implied Roadway Class 2 Lane Urban Collector Annual Average Daily Traffic (AADT) Veh/Day Posted Speed 4.2 Procedure Used for Roadway Noise Analysis Day/Night Split (%) Medium Trucks (%) Heavy Trucks (%) 10,000 50km/h 92/8 7 5 Table 4.1 Summary of Major Roadway Noise Sources. In order to calculate the road noise impact at the proposed development, we utilized the Ministry of Environment s STAMSON modeling software version This program allows us to input variables of a road or railway such as traffic volume, types of vehicles, speed, barrier locations and topography to determine the environmental noise impact at a point of reception. 4.3 Points of Reception To determine the worst case noise impact on the façade of the building, we have chosen two points of reception: one point of reception (POR1) on the South side of the townhomes, which is approximately 11 m away from the road noise source and the other point of reception (POR2) on the South side of Triplex 3, approximately 12 m away from the road. The position of these points of reception is shown in Figure 3.1, indicated by blue crosses.

9 REP Atelier 292 OCH Phase 2 Noise Study Page 9 of 26 POR 1 POR 2 11 m 12 m Figure 4.1 Site Plan showing the Points of Reception and distance to road source. 4.4 Parameters Used for Analysis The parameters used in STAMSON to assess the noise impact at POR1 and POR 2 are shown below in Table 3.2: Parameter Values Used Roadway: Uplands Dr. Time Period 16h Topography Flat/gentle slope with no barrier Rows of Houses 0 Density of Houses N/A Intermediate Surface Reflective Receiver Height (m) 1.5m Source Receiver Distance (m) 15.0m Angle 1/Angle 2-90 /90 Table 4.2 Parameters used in STAMSON model We assessed the daytime 16 hour traffic volume and noise impact as this is the highest volume and worst case.

10 REP Atelier 292 OCH Phase 2 Noise Study Page 10 of Surface Transportation Noise Levels The following table summarizes the predicted sound pressure levels at the point of reception from the results of the STAMSON environmental noise software calculation (Appendix A). POR 1 (dba) POR 2 (dba) Uplands Drive Total Table 4.3 Predicted Road Noise at the Points of Reception Table 3.3 shows the predicted sound pressure levels at the plane of window for the worst case scenario PORs at the 3225 Uplands development. It should be noted that one of the limitations of STAMSON is that it cannot calculate the traffic noise if the source-to-receiver distance is less than 15 m. Therefore, because the source-to-receiver distances from this study are both less than 15 m, the result at both PORs is the same. As our source-to-receiver distances are close to 15 m, 11 m for POR 1 and 12 m for POR 2, the calculations using the minimum source-toreceiver distance of 15 m should be reasonably accurate. 4.6 Roadway Noise Summary and Analysis We have calculated the predicted noise level caused by traffic using STAMSON and have shown that a 16h L eq at both POR1 and POR2, located on southern face of the townhomes and Triplex 3 respectively, is 65.3 dba. As these levels are above 55 dba, it is recommended that an evaluation of exterior building components is undertaken in order to verify that building components will achieve the required daytime indoor sound level of 45 dba for living spaces and 40 dba for sleeping quarters. This analysis is discussed below in Section Exterior Building Component Analysis In this section, we determine if the building complies with the City of Ottawa s ENCG indoor noise requirements based on the currently selected wall and window construction. We compare the required minimum façade AIF to the estimated AIF of the currently selected façade materials. 5.1 Building Components and Room Dimensions The current design of both the townhome and triplex south building façades is made up of 2 different components: 1) Glazing 2) Exterior wall

11 REP Atelier 292 OCH Phase 2 Noise Study Page 11 of 26 The specific wall composition was not yet available; however it was given that the composition would be comparable to a wall type previously used in a similar type of Ottawa Community Housing project, shown below. For POR1, we have assumed that the exterior wall type for the façades of the townhomes provided is sufficiently similar to NRC wall test TLA a that their AIF can be considered equal. These are compared below in Table 5.1. Exterior Wall -Fiber Cement Panel Siding (un-grooved finish) -38mm X 50mm vertical, galvanized metal furring channel (20 400mm O/C W/38 mm -R7.5 rigid insulation between tracks -Vapour-permeable air barrier (Blueskin VP100) -11.1mm OSB sheathing -38mm X140 wooden 400mm w/ R24 mineral wool insulation -6 mil poly vapour barrier, 100mm joints -12.7mm gypsum board Equivalent to NRC wall test TLA a 9.5 mm cement stucco 0.7 mm building paper 11 mm OSB 140 mm wood studs on 406 mm O/C with glass fibre cavity insulation 13mm gypsum board Table 5.1 Comparison of townhouse exterior wall and equivalent wall from CMHC, Road and Rail Noise: Effect on Housing. We have assumed that the exterior wall type for the façades of the triplexes provided are sufficiently similar to CMHC type EW5 (as described in Part 6 of the Canadian Mortgage and Housing Corporation, Road and Rail Noise: Effects on Housing publication) that their AIF can be considered equal. These are compared below in Table 5.2. Exterior Wall -90 mm masonry veneer c/w tie-backs and weeping holes -38 mm air gap -38 mm R7.5 rigid insulation anchored to wall framing -Vapour-permeable air barrier (Blueskin VP100) -11.1mm OSB sheathing -38 mm X140 mm wood 400mm w/r24 mineral wool insulation -6 mil poly vapour barrier, 100mm joints -12.7mm gypsum board Equivalent to EW5 in CMHC 100mm brick veneer 25mm air space Sheathing 50mm mineral wool or fiber glass batt (or thicker) 89mm studs Vapour barrier 12.7mm gypsum board Table 5.2 Comparison of triplex exterior wall and equivalent wall from CMHC, Road and Rail Noise: Effect on Housing. The calculation of AIF for each building component depends on the ratio of the area of a given component on the exterior to the total floor area of the corresponding interior room. Using preliminary drawings and room areas, we have determined these dimensions for the 1 st Floor bedroom for a typical townhouse or triplex unit, where we determined the noise impact at POR1 and POR2. The areas of the exterior wall components and ratios to the 1 st Floor bedrooms are given in Table 5.3 below. A layout of the ground floor and bedroom is shown in Figure 5.1

12 REP Atelier 292 OCH Phase 2 Noise Study Page 12 of 26 and 5.2 for the townhouses and triplexes respectively. Each bedroom analyzed has two exterior walls and the areas reported in Table 5.3 are the area totals of each individual exterior wall and window component. POR1 (Bedroom 3, Townhouse) POR2 (Bedroom 3, Triplex) Floor Area [m 2 ] Window 1 Area [m 2 ] (ratio to floor area) 1.6 (16.7%) 1.0 (10.8%) Window 2 Area [m 2 ] 0.7 (ratio to floor area) (7.3%) -- TLA a Wall 1 Area [m ] (59.5%) (ratio to floor area) -- TLA a Wall 2 Area [m 2 ] (ratio to floor area) EW 5 Wall 1 Area [m 2 ] (ratio to floor area) EW 5 Wall 2 Area [m 2 ] (ratio to floor area) 8.7 (90.8%) (65.8%) (113%) Table 5.3 Areas of Exterior Building Components and Floor Area in 1 st Floor Bedrooms. --

13 REP Atelier 292 OCH Phase 2 Noise Study Page 13 of 26 POR1 Figure 5.1 Townhouse ground floor layout with bedroom used for analysis indicated in red.

14 REP Atelier 292 OCH Phase 2 Noise Study Page 14 of 26 POR2 Figure 5.2 Triplex ground floor layout with bedroom used for analysis indicated in red. 5.2 Required Overall AIF Using equation (1), the required overall AIF for POR1 (Bedroom 3 of a typical townhome) for the envelope is calculated as follows, allowing for the possibility of noise-sensitive uses requiring an indoor level for sleeping quarters of 40 dba: POR 1: Required AIF = 65 (Outside L eq ) 40 (Required Indoor L eq ) + 10log 10 (4) + 2 = 33 (3) Thus the minimum required overall AIF for the townhouse façade at this location is 33. The number of building components used is four, as this room has two exterior walls and one window on each exterior wall.

15 REP Atelier 292 OCH Phase 2 Noise Study Page 15 of 26 The required AIF for POR2 (Bedroom 3 of a typical triplex) for sleeping quarters indoor level of 40 dba, is as follows: POR 2: Required AIF = 65 (Outside L eq ) 40 (Required Indoor L eq ) + 10log 10 (3) + 2 = 32 (4) Therefore, the minimum required AIF for the triplex façade at this location is 32. The number of building components used is three, as this room has two exterior walls and only one window. 5.3 Initial Calculation of AIF per Wall Component The building exterior at POR1 is made up of four components as described above. There are two facades of the bedroom that are included in the exterior envelope, each consisting of two components (wall+window). The calculation of the number of components is outlined in the CMHC Road and Rail Noise: Effects on Housing publication. As shown by Equation 3, we have calculated that the required overall AIF for the 4-component façade is 33. The building exterior at POR2 is made up of three components, two exterior walls and the window. From Equation 4, we get an overall AIF of 32. We first determine the AIF of the exterior wall for both PORs, according to Table 6.3 in CMHC, Road and Rail Noise: Effects on Housing. Using ratios of 60% and 91% of wall area to floor area for POR1, the AIF for the exterior wall, which we have assumed to be sufficiently similar to NRC wall type from test TLA a, is 37 and 38 for the wall facing Uplands Drive and the wall facing west, respectively. The AIF was calculated from NRC test data and these calculations are provided in Appendix B. The AIF of the wall component of the façade is greater than than the minimum overall AIF of 33. Using a ratio of 66% and 113% wall area to floor area for POR2, the AIF for the exterior wall, which we have assumed to be sufficiently similar to type EW5, is 48 and 46 for the wall facing Uplands Drive and the wall facing west, respectively. The AIF of the wall component of the façade is much greater to the minimum overall AIF of 32. As stated in Section 3.3 from the CMHC Road and Rail Noise: Effect on Housing document, if the AIF of any component exceeds the minimum required AIF by more than 10, the minimum AIF should be re-calculated with the number of components reduced. This is calculated below in Equation 5: POR 2: Required AIF = 65 (Outside L eq ) 40 (Required Indoor L eq ) + 10log 10 (1) + 2 = 27 (5)

16 REP Atelier 292 OCH Phase 2 Noise Study Page 16 of Exterior Glazing Requirements Based on Minimum AIF If the exterior wall envelope is kept as described above, the minimum AIF of 33 and 27 dictate the overall window construction for POR1 and POR2, respectively. POR1 Using ratios of window area to floor area of 17% and 7% for POR1, a more detailed calculation reflecting more modern window construction and using Transmission Loss values from NRC STC Test RAL-TL and RAL-TL and RAL-TL were used to obtain the following glazing requirements shown in Table 5.4. As stated in Part 6 Appendix A on p. 57 of the CMHC publication, if laboratory sound transmission loss data (conforming to ASIM test method E-90) is available, these should be used to calculate the AIF. AIF calculations using NRC test data are included in Appendix B with results shown in Table 5.4. Either of these types of windows should be used on all bedrooms in the townhouses with an exterior wall facing Uplands Dr. Window Glass Thickness Interplane Spacing AIF for 17% window area to floor area AIF for 7% window area to floor area Window 1 (facing 3mm & 3mm 9mm Uplands Dr.) 6mm & 6mm 13mm Window 2 (facing 3 mm & 3 mm 6 mm west) 3mm & 3mm 9mm Table 5.4 Glazing requirements for townhouse bedrooms with exterior wall facing Uplands Dr. Glazing data taken from test numbers RAL-TL85-212, RAL-TL and RAL-TL POR2 Using a 10% ratio of window area to floor area for POR2, we refer to Table 6.2 of the CMHC, Road and Rail Noise: Effects on Housing publication to choose a glazing composition with AIF of at least 27. As the AIF requirement is low for the window, the glazing can be double glazing consisting of two panes of 3mm glass separated by an airspace of 6 mm. AIF calculations using NRC test data are included in Appendix B with results shown in Table 5.5. Glass Thickness Interplane Spacing AIF for 10% window area to floor area 3mm & 3mm 6mm Table 5.5 Glazing requirements for triplex bedrooms with exterior wall facing Uplands Dr. Glazing data taken from test numbers RAL-TL As long as these minimal requirements are met for the glazing, the glazing is acceptable for traffic noise requirements. If the above glazing or better is chosen, then the spaces most impacted by noise meet the minimum specified AIF criteria for traffic noise. One of the glazing compositions in Table 5.4 is used for all bedrooms and it is also recommended that one of these glazing compositions is used for any living spaces such as living rooms or dens, which have an exterior wall facing Uplands Dr. The only requirement for glazing for triplex bedrooms facing Uplands Dr. is that it must be 3mm in thickness. STC STC

17 REP Atelier 292 OCH Phase 2 Noise Study Page 17 of Aircraft Noise Impact It is stated in the City of Ottawa Environmental Noise Control Guidelines that aircraft noise is to be analyzed separately from other sources of noise. An aircraft noise impact study is required for developments which are within the Airport Vicinity Development Zone (AVDZ) but outside the NEF 30 contour line, according to the City of Ottawa Annex 10 Land Use Constraints Due to Aircraft Noise. This map is shown in Figure 6.1 below, along with the approximate location of the development at 3225 Uplands Dr. As can be seen on the map, it is just outside, but very close to the NEF 25 contour line. We have used NEF 25 as the chosen zone to account for the worst case scenario, as the contour is so close to the development. Approximate location of new development Figure 6.1 Map showing land use constraints due to aircraft noise and approximate location of new townhouses and triplexes. The outdoor and indoor sound level criteria are shown in Table 6.1 below, and are taken from the MOE NPC-300 document. Sound Level Limits for Aircraft Noise Time NEF/NEP Outdoor 24 Hour 30 Indoor Living Areas 5 Sleeping 0 Quarters Table 6.1 Sound level criteria for aircraft noise from MOE NPC-300.

18 REP Atelier 292 OCH Phase 2 Noise Study Page 18 of 26 In the AVDZ, it is also necessary to include an aircraft warning clause. The example given in the City of Ottawa ENCG is shown below in Table 6.2. Area Example Noise Sensitive Development outside of NEF/NEP 25 and within Airport Vicinity Development Zone Purchasers/tenants are advised that due to the proximity of the airport, noise from the airport and individual aircraft may at times interfere with outdoor or indoor activities. Table 6.2 Example warning clause for developments in the Airport Vicinity Development Zone. 6.1 Aircraft Noise Impact Calculations Calculations of indoor sound levels due to aircraft were performed using the noise prediction software IBANA. This program developed through the NRC, uses inputs such as standard aircraft sound profile set at a specific NEF, building components including roof and wall types and floor areas to compute the indoor sound level of a room. This can be used to evaluate the exterior wall and roof building components for aircraft noise. Detailed calculations can be found in Appendix B, but a summary of calculations can be found below. An evaluation of the exterior wall building components of the townhouses was performed using different rooms than for road traffic noise. Bedrooms on the 2 nd floor were chosen in order to evaluate the roof components as well as wall and window components. Bedroom 2 for a typical townhouse unit and typical triplex unit was used. All wall and window types for the different rooms are the same as for the road traffic noise evaluation however room, wall and window areas will change and these are shown in Table 6.3. Minimum glazing types were chosen from Table 5.4 POR1 (Bedroom 3, Townhouse) POR2 (Bedroom 3, Triplex) Floor Area [m 2 ] Window 1 Area [m 2 ] (ratio to floor area) 1.6 (13.7%) 0.94 (9.0%) Window 2 Area [m 2 ] (ratio to floor area) 0.78 (6.7%) 0.94 (9.0%) TLA a Wall 1 Area [m ] (245%) (ratio to floor area) -- EW 5 Wall 1 Area [m 2 ] (ratio to floor area) (65.8%) Table 6.3 Areas of Exterior Building Components and Floor Area in 2 nd Floor Bedrooms.

19 REP Atelier 292 OCH Phase 2 Noise Study Page 19 of 26 Wall components for the townhouses and for the triplexes are given above in Section 5 in Table 5.1 and Table 5.2, respectively. IBANA has built-in wall, glazing and roof types that can be considered equivalent to the wall types specified for this development. The roof components specified for the townhouses are shown in Table 6.4. The composition of the roof is the same for both the townhouses and the triplexes. Roof -Two-ply modified bitumen membrane roofing system -19.1mm T&G veneer core plywood sheathing - 38mm x 89mm wood 400mm O.C mm pre-engineered 406mm O/C w/ R50 blown cellulose insulation - 6 mil poly vapour barrier, 100mm -19.1mm X 63.5mm 400mm O.C mm gypsum board Table 6.4 Roof components for townhouses at 3225 Uplands Dr. The equivalent wall, roof and glazing for the townhouses from IBANA were chosen as follows, using the same recommended wall and glazing components recommended in Section 5.1 and 5.4. Wall Composition: 9.5 mm cement stucco, 0.7 mm building paper, 11 mm OSB, 140 mm wood studs on 406 mm centers with glass fibre cavity insulation, 13mm gypsum board Roof Composition: Asphalt shingles, building paper, 11 mm OSB, 356 mm wood trusses on 406 mm center with glass fibre cavity insulation, 13 mm gypsum board, no vents installed. Window Composition: 3 mm glass, 9 mm air space, 3 mm glass. The equivalent wall, roof and glazing for the triplexes from IBANA were chosen as follows. Wall Composition: 89 mm brick, 16 mm airspace, 11 mm OSB, 140 mm wood studs on 406 mm centers with glass fibre cavity insulation, 13mm gypsum board. Roof Composition: Asphalt shingles, building paper, 11 mm OSB, 356 mm wood trusses on 406 mm center with glass fibre cavity insulation, 13 mm gypsum board, no vents installed. Window Composition: 3 mm glass, 6 mm airspace, 3 mm glass. From IBANA calculations the outdoor and indoor sound levels computed are shown in Table 6.5 along with the equivalent NEF. NEF can be calculated from the indoor sound level as in Equation 6. NEF = Indoor L eq - 31 (6)

20 REP Atelier 292 OCH Phase 2 Noise Study Page 20 of 26 Outdoor Sound Level (dba) Indoor Sound Level (dba) Indoor NEF Townhouse Bedroom Triplex Bedroom Table 6.5 Indoor sound levels and equivalent NEF from IBANA calculations. As we can see, neither of the indoor NEF values is greater than NEF 0 required by the City of Ottawa ENCG. Therefore, the only upgrades required to the exterior components are to use the wall types given in Section 5.1 for any townhouse and triplex bedrooms that share an exterior wall facing Uplands Dr., and to use minimum glazing recommended in Section 5.4. The only measure needed for aircraft noise is a Warning Clause. A summary of these measures is given in Section Summary of Required Measures As the traffic noise level from Uplands Dr. is likely to exceed 55 dba at locations on the southern faces of townhouses and triplexes to be located at 3225 Uplands Dr., a Warning Clause for road traffic noise must be included in the Development Agreement(s) and in the Agreement(s) or Offer(s) of Purchase and Sale for each unit. The type of Warning Clause to be included is shown below with example text only from the ENCG and should be updated in the Development Agreement(s) and in the Agreement(s) or Offer(s) of Purchase and Sale to reflect the measures undertaken in this study. TYPE Extensive mitigation of indoor and outdoor amenity area Example Text Purchasers/tenants are advised that despite the inclusion of noise control features in the development and within the building units, sound levels due to increasing road/rail/light Rail/transitway traffic may, on occasion, interfere with some activities of the dwelling occupants as the sound levels exceed the sound level limits of the City and the Ministry of the Environment. To help address the need for sound attenuation this development includes: Multi-pane glass; Exterior wall of townhouse bedrooms with an exterior wall facing Uplands Dr. to match wall type from NRC test, which is equivalent to current cement cladding wall type and wall type EW5 from the CMHC Road and Rail Noise: Effects on Housing publication, equivalent to current brick wall type; To ensure that provincial sound level limits are not exceeded it is important to maintain these sound attenuation features. This dwelling unit has also been designed with the provision for adding central air conditioning at the occupant s discretion. Installation of central air conditioning will allow windows and exterior doors to remain closed, thereby ensuring that the indoor sound levels are within the sound level limits of the City and the Ministry of the Environment.

21 REP Atelier 292 OCH Phase 2 Noise Study Page 21 of 26 The following envelope requirements, from Sections 5.1, 5.4 and 6.1 must be incorporated: The exterior wall consisting of cement panel cladding must match or exceed the wall type TL a, which was determined to be equivalent to the wall type that was given. Exterior wall consisting of brick must match or exceed the wall type EW5 from CMHC Road and Rail Noise document which was determined to be equivalent to the suggested brick-type wall. This should apply to all bedrooms and living areas which have an exterior wall facing Uplands Dr. Glazing requirements from Section 5.4 should be followed for all living areas and bedrooms which have an exterior wall facing Uplands Dr. Window Glass Thickness Interplane Spacing AIF for 17% window area to floor area AIF for 7% window area to floor area Window 1 (facing 3mm & 3mm 9mm Uplands Dr.) 6mm & 6mm 13mm Window 2 (facing 3 mm & 3 mm 6 mm west) 3mm & 3mm 9mm Table 5.4 Glazing requirements for townhouse bedrooms with exterior wall facing Uplands Dr. Glazing data taken from test numbers RAL-TL85-212, RAL-TL and RAL-TL STC Glass Thickness Interplane Spacing AIF for 10% window area to floor area 3mm & 3mm 6mm Table 5.5 Glazing requirements for triplex bedrooms with exterior wall facing Uplands Dr. Glazing data taken from test numbers RAL-TL STC As the development is in the AVDZ, it is also necessary to include an aircraft warning clause. The example given in the City of Ottawa ENCG is shown below taken from Table 6.2 above. Area Example Noise Sensitive Development outside of NEP 25 and within Airport Vicinity Development Zone Purchasers/tenants are advised that due to the proximity of the airport, noise from the airport and individual aircraft may at times interfere with outdoor or indoor activities. Table 6.2 Example warning clause for developments in the Airport Vicinity Development Zone.

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23 REP Atelier 292 OCH Phase 2 Noise Study Page 22 of 25 Appendix A STAMSON Calculations Polytek Street Ottawa, ON K1J 9J3 E: sota@sota.ca T: F:

24 REP Atelier 292 OCH Phase 2 Noise Study Page 23 of 25 STAMSON 5.0 SUMMARY REPORT Date: :45:39 MINISTRY OF ENVIRONMENT AND ENERGY / NOISE ASSESSMENT Filename: och3225.te Description: Time Period: 24 hours Road data, segment # 1: Uplands Car traffic volume : 8800 veh/timeperiod * Medium truck volume : 700 veh/timeperiod * Heavy truck volume : 500 veh/timeperiod * Posted speed limit : 50 km/h Road gradient : 0 % Road pavement : 1 (Typical asphalt or concrete) Data for Segment # 1: Uplands Angle1 Angle2 : deg deg Wood depth : 0 (No woods.) No of house rows : 0 Surface : 2 (Reflective ground surface) Receiver source distance : m Receiver height : 1.50 m Topography : 1 (Flat/gentle slope; no barrier) Reference angle : 0.00 Result summary ! source! Road! Total! height! Leq! Leq! (m)! (dba)! (dba) Uplands! 1.50! 65.32! Total dba TOTAL Leq FROM ALL SOURCES: Polytek Street Ottawa, ON K1J 9J3 E: sota@sota.ca T: F:

25 REP Atelier 292 OCH Phase 2 Noise Study Page 24 of 25 Appendix B AIF Wall and Glazing Calculations Polytek Street Ottawa, ON K1J 9J3 E: sota@sota.ca T: F:

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35 REP Atelier 292 OCH Phase 2 Noise Study Page 25 of 25 Appendix C IBANA Calculations Polytek Street Ottawa, ON K1J 9J3 E: sota@sota.ca T: F:

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