Appendix J. Noise Impact Assessment Report

Transcription

1 Appendix J Noise Impact Assessment Report Appendix J

2 Sheridan Park Drive Extension Municipal Class Environmental Assessment Noise Impact Assessment Report City of Mississauga R.J. Burnside & Associates Limited 6990 Creditview Road, Unit 2 Mississauga ON L5N 8R9 CANADA

3 City of Mississauga i Distribution List No. of Hard PDF Organization Name Copies 0 Yes Yes City of Mississauga Record of Revisions Revision Date Description 0 September 7, 2017 Draft Submission to the City 1 September 25, nd Draft Submission to the City 2 3 rd Draft Submission to the City R.J. Burnside & Associates Limited Report Prepared By: Harvey Watson, P.Eng. Manager, Air & Noise KZ/HW:jtj Report Reviewed By: David Argue, P.Eng., PTOE Project Manager Jennifer Vandermeer, P.Eng. Environmental Assessment Lead

4 City of Mississauga ii Executive Summary As part of the Sheridan Park Drive Extension Environmental Assessment (EA), a noise study was undertaken to determine noise impacts as a result of the proposed Sheridan Park Drive extension. The noise study followed the Ontario Ministry of Transportation s (MTO) Environmental Guide for Noise (MTO Noise Guide) (MTO, 2006) and the City of Mississauga Policy , Noise Attenuation Barriers on Major Roadways (City Noise Policy) (CoM, March 2015). Noise levels are predicted in decibels in the A-weighted dba scale, which best approximates the human perception of sound over a specified time period. An increase of 2 to 3 decibels in noise levels is considered to be just perceivable to the average person. It should be noted that a 3 dba increase in noise equates to a doubling of traffic volumes. Based on the MTO Noise Guide, where an existing roadway is proposed to be modified / widened adjacent to a Noise Sensitive Area (NSA) or a new road is proposed, MTO requires that the future noise levels without the proposed improvements be compared to the future noise level with the proposed improvements. The assessment is done at the outdoor living area (typically backyards) of each NSA. The provision of noise mitigation is to be investigated should the future noise level with the proposed improvements result in a greater than 5 dba increase over the future noise level without the proposed improvements. If noise mitigation is provided, the objective is a minimum 5 dba reduction. Mitigation will attempt to achieve levels as close to, or lower than, the objective level. For the purpose of the noise analysis carried out for this Class EA study, the City Noise Policy state Noise barriers may be constructed by the City in conjunction with a road widening project if no noise attenuation barriers exist, and the proposed additional lanes of traffic are found to adversely affect the daytime noise level beyond the established criteria (the noise level must be greater than 60 dba (Leq daytime). (Leq means equivalent sound level and daytime means 7:00 AM to 11 PM. Leq daytime means daytime average.) The STAMSON 5.0 computer modelling program, which is approved for use in Ontario by the MTO, was used to assess existing and future noise levels on Sheridan Park Drive. This program is used to predict noise levels generated from the road at the outdoor living areas (typically backyards) of NSA s. The Sheridan Homelands neighbourhood to the north of the Study Area is considered an NSA. The outdoor living areas of three residential houses adjacent to the utility corridor as well as the Homelands Senior Public School yard were selected as representative

5 City of Mississauga iii Points of Reception (PORs) for the purposes of assessing future noise levels within the NSA. The future sound levels at the four PORs were predicted based on the traffic forecast for 2031 calendar year for three scenarios: Current, Future No Build, and Future Build. Future No Build scenario represents conditions in the future without proposed road extension; while Future Build scenario includes proposed road extension in the future. Based on the Future Build Scenario, the future sound level is reduced at two of the PORs (POR2 and POR4) because the traffic that currently drives on the closest road will be reduced if the extension is built. For instance, at POR4 during the day, the traffic on Homelands Drive will be 6,100 vehicles per day without the extension but only 5,200 vehicles per day if the extension is built. Based on the noise analysis, the difference between the projected future noise levels with and without the Sheridan Park Drive extension was determined to be less than 1 dba. Therefore the extension has negligible impact on the noise levels in the neighbourhood and the consideration of noise mitigation is not warranted based on the Provincial guidelines and City Noise Policy.

6 City of Mississauga iv Table of Contents 1.0 Introduction Study Area Noise Assessment Sensitive Receptors Existing Sound Levels Noise Impact Assessment Criteria Noise Impact Assessment Methodology Results Conclusions References Tables Table 1: Mitigation Effort Required for the Projected Noise Level with the Proposed Improvements above the Current Noise Levels... 7 Table 2: Traffic Volumes... 8 Table 3: Predicted (Modelled) Sound Levels for Future No Build and Future Build Scenarios... 8 Figures Figure 1: Study Area... 3 Figure 2: Sensitive Receptors... 5 Appendices Appendix A Sample Noise Modelling Printout Appendix B Background Measurements Appendix C Weather Conditions

7 City of Mississauga v Glossary of Terms and Acronyms AADT Annual Average Daily Traffic Burnside R.J. Burnside & Associates Limited City Noise Policy City of Mississauga Policy , Noise Attenuation Barriers on Major Roadways, March 2015 EA Environmental Assessment MOECC Ontario Ministry of the Environment and Climate Change MTO Ontario Ministry of Transportation MTO Noise Guide Ontario Ministry of Transportation Environmental Guide for Noise, October 2006 OLA Outdoor Living Area POR Point of Reception

8 City of Mississauga vi Disclaimer Other than by the addressee, copying or distribution of this document, in whole or in part, is not permitted without the express written consent of R.J. Burnside & Associates Limited.

9 City of Mississauga Introduction The City of Mississauga (City) has undertaken a Municipal Class Environmental Assessment (EA) to investigate the proposed extension of Sheridan Park Drive between Homelands Drive and Speakman Drive in the southwestern area of Mississauga. R.J. Burnside & Associates Limited (Burnside) has facilitated the EA on behalf of the City. The EA Study has followed a comprehensive planning and design process in order to explore the opportunity to connect the east and west sections of Sheridan Park Drive, improve the road network connectivity in the residential neighborhood and business area, create options for alternative routes and improve multi-modal network connectivity. The EA Study has been completed in accordance with the requirements of a Schedule B Undertaking as outlined in the Municipal Engineers Association Municipal Class Environmental Assessment Document (October 2000, as amended 2007, 2011 & 2015), which is an approved process under the Ontario Environmental Assessment Act. As part of the EA Study, Burnside has completed a Noise Impact Assessment to identify whether the proposed Sheridan Park Drive extension will change noise levels within the Study Area and determine if any potential mitigation measures are required.

10 City of Mississauga Study Area The Study Area is generally bordered by a utility corridor to the north, Winston Churchill Boulevard to the west, Speakman Drive/Homelands Drive to the east and naturalized private lands to the south. The Study Area is illustrated on Figure 1. The proposed extension of Sheridan Park Drive falls within the existing City of Mississauga owned right-of-way (ROW), which runs through the centre part of the Study Area. The Study Area includes a unique combination of uses including the Sheridan Park Corporate Centre (Sheridan Park), a utility corridor that includes a multi-use trail and the Sheridan Homelands residential neighbourhood. Sheridan Park is a 340 acre corporate centre, which is primarily designated Business Employment in the City of Mississauga s Official Plan (MOP). The majority of the Park is occupied by private industries and businesses, which include in their landholdings significant natural areas on the north side of the corporate centre, within the Study Area. These naturalized areas include two wooded areas that are identified as Significant Natural Areas in the City s Natural Areas Survey (2016 Update). Sheridan Park is also identified as one of the City s cultural landscape due to its scenic and distinct visual qualities. The City maintains a paved multi-use trail through the utility corridor from Winston Churchill Boulevard to Homelands Drive/Speakman Drive. The trail then continues east along the south side of Sheridan Park Drive to Erin Mills Parkway. To the west of Winston Churchill Boulevard, the trail continues through the hydro corridor in Oakville. The trail provides recreational opportunities to the local residents and commuter cyclists.

11 City of Mississauga 3 Figure 1: Study Area

12 City of Mississauga Noise Assessment 3.1 Sensitive Receptors Noise sensitive land use, as described by the Ministry of the Environment and Climate Change (MOECC, 2013), means: A property of a person that accommodates a dwelling and includes a legal nonconforming residential use; or A property of a person that accommodates a building used for a noise sensitive commercial purpose; or A property of a person that accommodates a building used for a noise sensitive institutional purpose. There are residential land uses to the north of the Study Area which are part of the Sheridan Homelands neighbourhood that would be a sensitive land use. The only institutional purpose sensitive land use in the Study Area is Homelands Sr. Public School. There are no commercial purpose sensitive land uses within the Study Area. The residential dwelling at 2536 Barcella Crescent north of the proposed road extension was determined to be the location where the impact from the proposed roadway would result in the largest change in sound level and so was designated as one of the points of reception (POR1) and selected for the purpose of this assessment. This dwelling is the closest building to the proposed road extension alignment and furthest from all other existing road noise. The distance is 70 m from the centre of the proposed road alignment to the backyard (3 m from the building). The rest of the buildings along the road corridor including Homelands Sr. Public School are the same distance or further away from the proposed Sheridan Park Drive extension. Since the road noise decreases with the distance, all other dwellings are expected to experience the same or lower sound levels than POR1 as a result of the proposed road extension. In addition to POR1, the following receptors were also assessed: POR Hollington Crescent POR3 - Homelands Sr. Public School POR Pyramid Crescent

13 City of Mississauga 5 Figure 2: Sensitive Receptors The most exposed side of the dwelling must be assessed according to the Ontario Ministry of Transportation (MTO) Environmental Guide for Noise (Noise Guide) (MTO, 2006). The most exposed side refers to the closest side of the dwelling unit even if there is no Outdoor Living Area (OLA) associated with this side and without the shielding of the building. However, required mitigation measures (if applicable) should be based on sound levels predicted at the OLA. In the case of POR1, the most exposed side and OLA are located on the same side of the building (i.e., the backyard side). 3.2 Existing Sound Levels Measurements of the existing acoustical environment were performed by taking sound level measurements at the backyard of the sensitive receptor POR1. A noise meter was placed within the utility corridor, close to the backyard fenceline. The location was 4.1 m south east of the property line and 1.4 m northeast of the southwest corner of the property for 2536 Barcella Crescent. This location is closer to the proposed road extension corridor than the rear of the house or OLA and also closer to the QEW. Therefore, the sound levels measured at this location are expected to be louder than experienced at the OLA of 2536 Barcella Crescent. This provides for a more conservative approach than the Noise Guide recommendation that existing sound levels to be measured at locations approximately 3 m away from the dwelling wall.

14 City of Mississauga 6 The sound level is measured by a sound level meter collecting measurements 20,000 times every second for an entire hour. At the end of the hour, the Leq-1h is calculated as the average of all the measurements within that hour (Leq means equivalent sound level and 1h means one hour. Leq-1h one hour average). When deciding the background noise level for a location, a proponent must measure the sound level for at least 48 hours and then use the lowest Leq-1h measured for both daytime and nighttime. The measured level is compared to the default level and the higher level is used. The longer the measurement, the more likely a lower number will be measured. Sound level measurements were collected from 11:42 AM on Thursday, April 13, 2017 through 8:07 AM on Friday, April 21, This time period corresponded to the Easter weekend and following week, during which time existing sound levels were expected to measure the lowest in relation to impact from traffic on local roads. This was a more conservative approach since the sound levels during this period would be lower than the typical weekday levels and lower than the default levels. The measured background average 1-h Leq sound levels during daytime period (between 7 AM and 11 PM) were between 47 dba and 61 dba. Nighttime period (between 11 PM and 7 AM) sound levels were measured to be between 40 dba and 56 dba. The background sound levels take into account any noise sources that were active and audible during the measurement period and include all the traffic on surrounding roads and all the industrial operations that were running during that time. The minimum hour recorded during the monitoring was screened for airplane impacts. No airplanes were found so the minimum 1h-Leq was not reduced below the measured value. Current noise levels experienced by residents is noise from the adjacent arterial and collector roads, the Sheridan Park to the south, and the QEW, which is approximately 1 km away. Standard practice is to use the higher of default noise values taken from the Ontario Ministry of Transportation s (MTO) Environmental Guide for Noise (MTO Noise Guide) (MTO, 2006) or the lowest of the noise levels measured for each time period. The higher of the two is selected. As a result of these measurements, it was confirmed that the default background values applied to the project. Those default background values are 50 dba during the day and 45 dba during the night. 3.3 Noise Impact Assessment Criteria The noise impact due to the proposed road extension was assessed based on MTO Noise Guide criteria and the City of Mississauga Policy , Noise Attenuation Barriers on Major Roadways (City Noise Policy)(CoM, March 2015).

15 City of Mississauga 7 According to the MTO Noise Guide, where an increase in sound level is predicted, mitigation measures may be required as summarized in Table 1. Table 1: Mitigation Effort Required for the Projected Noise Level with the Proposed Improvements above the Current Noise Levels Change in Noise Level Above Current / Projected Mitigation Effort Required Noise Levels with Proposed Improvements < 5 dba 1 change AND < 65 dba 5 dba change OR 65 dba None Investigate noise control measures on right-of-way. Introduce noise control measures within right-of-way and mitigate to current noise level if technically, economically and administratively feasible. Noise control measures, where introduced, should achieve a minimum of 5 dba attenuation, over first row receivers. Mitigation measures, if applicable, must attempt to achieve levels that otherwise would be experienced without the proposed project if technically, economically, and administratively feasible. For this project, the change noted in Table 1 is the difference between the default background and the predicted sound level. According to the City Noise Policy, the installation of new noise attenuation barriers is subject to the following: The noise level must be greater than 60 dba (LEQ daytime). (LEQ means equivalent sound level and daytime means 7:00 a.m. to 11:00 p.m. LEQ daytime means daytime average.), and The residential area must be adjacent to arterial and major collector roads. Note that this policy indicates a noise wall will be installed at a lower sound level than required by the MTO Noise Guide. 3.4 Noise Impact Assessment Methodology The noise impact assessment was performed following the MTO Noise Guide. In order to determine the potential noise impact, future predicted sound levels with and without the proposed road extension were compared for the OLA, which coincides with the most exposed side of each POR. Sound levels were predicted using traffic noise prediction 1dBA (A-weighted decibel) is an expression of the relative loudness of sounds in air as perceived by the human ear.

16 City of Mississauga 8 model ORNAMENT (Ontario Road Noise Analysis Method), implemented through the STAMSON (version 5.04) computer program as required by MTO. The future sound levels were predicted based on the Annual Average Daily Traffic (AADT) value forecast for 2031 calendar year for three scenarios: Current, Future No Build, and Future Build. Future No Build scenario represents conditions in the future without proposed road extension; while Future Build scenario includes proposed road extension in the future. The AADT and percentages of commercial vehicles are summarized in Table 2. Table 2: Traffic Volumes Road Time Frame AADT Max Hourly % of Medium Trucks % of Heavy Trucks Sheridan Park Drive Extension Present Sheridan Park Drive Extension Future No Build Sheridan Park Drive Extension Future Build 2, % 1.36 % Homelands Drive Present 5, % 1.36 % Homelands Drive Future No Build 6, % 1.36 % Homelands Drive Future Build 5, % 1.36 % Winston Churchill Blvd Present 26,000 2, % 1.36 % Winston Churchill Blvd Future No Build 36,350 3, % 1.36 % Winston Churchill Blvd Future Build 37,000 3, % 1.36 % 3.5 Results Current and predicted sound levels including calculated change in sound levels due to the proposed road extension in the Future No Build Scenario and Future Build Scenario are summarized in Table 3. Table 3: Predicted (Modelled) Sound Levels for Future No Build and Future Build Scenarios Receiver Location Current Levels (dba) Future Sound Levels for No Build Scenario (dba) Future Sound Levels for Build Scenario (dba) Change due to Proposed Road Extension (dba) 2 POR1 Daytime 50 (default) POR1 Nighttime 45 (default) POR2 Daytime POR2 Nighttime POR3 Daytime 3 50 (default) POR4 Daytime POR4 Nighttime Negative values indicate that the sound level will decrease if the extension is built. 3 POR3 is a school so nighttime impacts were not assessed.

17 City of Mississauga 9 As shown in Table 3, the predicted sound levels for the Future Build Scenario are low and the increase due to the undertaking is expected to be well below 5 dba; therefore, no mitigation measures are required at these receptors. Further, the Future Sound Level will be below 60 dba so the City Noise Policy indicates a noise wall is not required and will not be installed. Based on the Future Build Scenario, the future sound level is reduced at POR2 and POR4 because the traffic that currently drives on the closest road will be reduced if the extension is built. For instance, at POR4 during the day, the traffic on Homelands Drive will be 6,100 vehicles per day without the extension but only 5,200 vehicles per day if the extension is built (see Table 2 above). The predicted future sound levels were performed for a variety of locations throughout the Study Area and none of the locations meet the criteria for a noise wall so noise mitigation is not required at any location within the Study Area.

18 City of Mississauga Conclusions If the Sheridan Park Drive extension is constructed, the increase in sound levels expected throughout the area will be less than 5 dba therefore noise mitigation is not warranted.

19 City of Mississauga References Computer Program STAMSON Version Ministry of the Environment. Environmental Guide for Noise. Ministry of Transportation, October 2006 (MTO, 2006). Noise Attenuation Barriers on Major Roadways, City of Mississauga, Policy Number: March 2015 (CoM, March 2015) Environmental Noise Guideline. Stationary and Transportation Sources Approval and Planning. Publication NPC-300.Ministry of the Environment and Climate Change, August 2013 (MOECC, 2013). ORNAMENT Ontario Road Noise Analysis Method for Environment and Transportation. Technical Document. Ministry of the Environment, October Transit Noise and Vibration Impact Assessment, Office of Planning and Environment Federal Transit Administration, May 2006 (FTA, 2006).

20 Appendix A Appendix A Sample Noise Modelling Printout

21 STAMSON 5.0 NORMAL REPORT Date: :06:43 MINISTRY OF ENVIRONMENT AND ENERGY / NOISE ASSESSMENT Filename: por01.te Time Period: Day/Night 16/8 hours Description: POR01 AADT4,400vpd Road data, segment # 1: ShrdPrkwy (day/night) Car traffic volume : 3762/418 veh/timeperiod * Medium truck volume : 144/16 veh/timeperiod * Heavy truck volume : 54/6 veh/timeperiod * Posted speed limit : 50 km/h Road gradient : 0 % Road pavement : 1 (Typical asphalt or concrete) * Refers to calculated road volumes based on the following input: 24 hr Traffic Volume (AADT or SADT): 4400 Percentage of Annual Growth : 0.00 Number of Years of Growth : 5.00 Medium Truck % of Total Volume : 3.64 Heavy Truck % of Total Volume : 1.36 Day (16 hrs) % of Total Volume : Data for Segment # 1: ShrdPrkwy (day/night) Angle1 Angle2 : deg deg Wood depth : 0 (No woods.) No of house rows : 0 / 0 Surface : 1 (Absorptive ground surface) Receiver source distance : / m Receiver height : 1.50 / 4.50 m Topography : 1 (Flat/gentle slope; no barrier) Reference angle : 0.00 Results segment # 1: ShrdPrkwy (day) Source height = 1.08 m ROAD ( ) = dba Angle1 Angle2 Alpha RefLeq P.Adj D.Adj F.Adj W.Adj H.Adj B.Adj SubLeq Segment Leq : dba Total Leq All Segments: dba Results segment # 1: ShrdPrkwy (night) Source height = 1.08 m ROAD ( ) = dba Angle1 Angle2 Alpha RefLeq P.Adj D.Adj F.Adj W.Adj H.Adj B.Adj SubLeq Segment Leq : dba Total Leq All Segments: dba

22 TOTAL Leq FROM ALL SOURCES (DAY): (NIGHT): AADT double to avoid <40 vph at night so subtract 3 dba TOTAL Leq FROM ALL SOURCES (DAY): (NIGHT): 38.28

23 Appendix B Appendix B Background Measurements

24 65.0 Sheridan Park Drive POR Impact Prior to Construction 8:00 am Thursday April 13, 2017to 8:00 am Friday April 21, :00 16:00 00:00 08:00 16:00 00:00 08:00 16:00 00:00 08:00 16:00 00:00 08:00 16:00 00:00 08:00 16:00 00:00 08:00 16:00 00:00 08:00 16:00 00:00 Values collected duringrain or high wind have been removed as required by the MOECC. 1-h Leq Limit

25 Appendix C Appendix C Weather Conditions

26 Weather Station Records Project No.: Station Name TORONTO INTL A Province ONTARIO Latitude Longitude Elevation Climate Identifier WMO Identifier TC Identifier YYZ All times are specified in Local Standard Time (LST). Add 1 hour to adjust for Daylight Saving Time where and when it is observed. Legend E Estimated M Missing NA Not Available Partner data that is not subject to review by the National Climate Archives Date/Time Year Temp ( C) Dew Point TRel Hum (%Wind Dir (1Wind Spd (Visibility (kmstn Press ( Weather 13Apr2017 0: NA 13Apr2017 1: Mainly Clear 13Apr2017 2: NA 13Apr2017 3: NA 13Apr2017 4: Cloudy 13Apr2017 5: NA 13Apr2017 6: NA 13Apr2017 7: Mainly Clear 13Apr2017 8: NA 13Apr2017 9: NA 13Apr : Mostly Cloudy 13Apr : NA 13Apr : NA 13Apr : Mostly Cloudy 13Apr : NA 13Apr : NA 13Apr : Mostly Cloudy 13Apr : NA 13Apr : NA 13Apr : Mostly Cloudy 13Apr : NA 13Apr : NA 13Apr : Mostly Cloudy 13Apr : NA 14Apr2017 0: NA 14Apr2017 1: Mostly Cloudy 14Apr2017 2: NA 14Apr2017 3: NA 14Apr2017 4: Mostly Cloudy 14Apr2017 5: NA 14Apr2017 6: NA 14Apr2017 7: Mostly Cloudy 14Apr2017 8: NA 14Apr2017 9: NA 14Apr : Clear 14Apr : NA 14Apr : NA 14Apr : Clear 14Apr : NA 14Apr : NA 14Apr : Clear 14Apr : NA 14Apr : NA 14Apr : Mainly Clear 14Apr : NA 14Apr : NA 14Apr : Clear 14Apr : NA 15Apr2017 0: NA 15Apr2017 1: Mainly Clear 15Apr2017 2: NA 15Apr2017 3: NA 15Apr2017 4: Mostly Cloudy 15Apr2017 5: NA 15Apr2017 6: NA 15Apr2017 7: Mostly Cloudy 15Apr2017 8: Rain 15Apr2017 9: Rain 15Apr : Rain 15Apr : Rain 15Apr : Rain 15Apr : Mostly Cloudy 15Apr : NA 15Apr : NA 15Apr : Mostly Cloudy 15Apr : NA R.J. Burnside & Associates Limited Weather 1 of Sheridan Noise Tables.xlsm

27 Weather Station Records Project No.: Station Name TORONTO INTL A Province ONTARIO Latitude Longitude Elevation Climate Identifier WMO Identifier TC Identifier YYZ All times are specified in Local Standard Time (LST). Add 1 hour to adjust for Daylight Saving Time where and when it is observed. Legend E Estimated M Missing NA Not Available Partner data that is not subject to review by the National Climate Archives Date/Time Year Temp ( C) Dew Point TRel Hum (%Wind Dir (1Wind Spd (Visibility (kmstn Press ( Weather 15Apr : NA 15Apr : Clear 15Apr : NA 15Apr : NA 15Apr : Mostly Cloudy 15Apr : NA 16Apr2017 0: NA 16Apr2017 1: Clear 16Apr2017 2: NA 16Apr2017 3: NA 16Apr2017 4: Mostly Cloudy 16Apr2017 5: NA 16Apr2017 6: NA 16Apr2017 7: Mostly Cloudy 16Apr2017 8: NA 16Apr2017 9: NA 16Apr : Mostly Cloudy 16Apr : NA 16Apr : NA 16Apr : Mostly Cloudy 16Apr : NA 16Apr : Rain Showers 16Apr : Mostly Cloudy 16Apr : NA 16Apr : NA 16Apr : Mostly Cloudy 16Apr : NA 16Apr : NA 16Apr : Mainly Clear 16Apr : NA 17Apr2017 0: NA 17Apr2017 1: Mostly Cloudy 17Apr2017 2: NA 17Apr2017 3: NA 17Apr2017 4: Mainly Clear 17Apr2017 5: NA 17Apr2017 6: NA 17Apr2017 7: Mainly Clear 17Apr2017 8: NA 17Apr2017 9: NA 17Apr : Mainly Clear 17Apr : NA 17Apr : NA 17Apr : Mainly Clear 17Apr : NA 17Apr : NA 17Apr : Mainly Clear 17Apr : NA 17Apr : NA 17Apr : Mainly Clear 17Apr : NA 17Apr : NA 17Apr : Clear 17Apr : NA 18Apr2017 0: NA 18Apr2017 1: Clear 18Apr2017 2: NA 18Apr2017 3: NA 18Apr2017 4: Clear 18Apr2017 5: NA 18Apr2017 6: NA 18Apr2017 7: Mainly Clear 18Apr2017 8: NA 18Apr2017 9: NA 18Apr : Mainly Clear 18Apr : NA R.J. Burnside & Associates Limited Weather 2 of Sheridan Noise Tables.xlsm

28 Weather Station Records Project No.: Station Name TORONTO INTL A Province ONTARIO Latitude Longitude Elevation Climate Identifier WMO Identifier TC Identifier YYZ All times are specified in Local Standard Time (LST). Add 1 hour to adjust for Daylight Saving Time where and when it is observed. Legend E Estimated M Missing NA Not Available Partner data that is not subject to review by the National Climate Archives Date/Time Year Temp ( C) Dew Point TRel Hum (%Wind Dir (1Wind Spd (Visibility (kmstn Press ( Weather 18Apr : NA 18Apr : Mostly Cloudy 18Apr : NA 18Apr : NA 18Apr : Mostly Cloudy 18Apr : NA 18Apr : NA 18Apr : Mostly Cloudy 18Apr : NA 18Apr : NA 18Apr : Mostly Cloudy 18Apr : NA 19Apr2017 0: NA 19Apr2017 1: Mostly Cloudy 19Apr2017 2: NA 19Apr2017 3: Rain Showers 19Apr2017 4: Cloudy 19Apr2017 5: NA 19Apr2017 6: NA 19Apr2017 7: Cloudy 19Apr2017 8: Rain Showers 19Apr2017 9: NA 19Apr : Mostly Cloudy 19Apr : NA 19Apr : NA 19Apr : Cloudy 19Apr : NA 19Apr : NA 19Apr : Mostly Cloudy 19Apr : NA 19Apr : NA 19Apr : Mostly Cloudy 19Apr : NA 19Apr : NA 19Apr : Mostly Cloudy 19Apr : NA 20Apr2017 0: NA 20Apr2017 1: Mostly Cloudy 20Apr2017 2: NA 20Apr2017 3: NA 20Apr2017 4: Cloudy 20Apr2017 5: NA 20Apr2017 6: NA 20Apr2017 7: Cloudy 20Apr2017 8: NA 20Apr2017 9: Rain 20Apr : Moderate Rain Showers,Fog 20Apr : Rain Showers,Fog 20Apr : Rain Showers 20Apr : Cloudy 20Apr : Rain Showers 20Apr : Rain Showers 20Apr : Rain Showers 20Apr : Rain Showers 20Apr : Rain Showers 20Apr : Moderate Rain Showers 20Apr : NA 20Apr : Rain Showers 20Apr : Rain Showers 20Apr : Rain 21Apr2017 0: NA 21Apr2017 1: Fog 21Apr2017 2: Drizzle,Fog 21Apr2017 3: Drizzle,Fog 21Apr2017 4: Fog 21Apr2017 5: Drizzle,Fog R.J. Burnside & Associates Limited Weather 3 of Sheridan Noise Tables.xlsm

29 Weather Station Records Project No.: Station Name TORONTO INTL A Province ONTARIO Latitude Longitude Elevation Climate Identifier WMO Identifier TC Identifier YYZ All times are specified in Local Standard Time (LST). Add 1 hour to adjust for Daylight Saving Time where and when it is observed. Legend E Estimated M Missing NA Not Available Partner data that is not subject to review by the National Climate Archives Date/Time Year Temp ( C) Dew Point TRel Hum (%Wind Dir (1Wind Spd (Visibility (kmstn Press ( Weather 21Apr2017 6: NA 21Apr2017 7: Cloudy 21Apr2017 8: NA 21Apr2017 9: NA 21Apr : Rain Showers 21Apr : NA 21Apr : NA 21Apr : Cloudy 21Apr : NA 21Apr : NA 21Apr : Mostly Cloudy 21Apr : NA 21Apr : NA 21Apr : Cloudy 21Apr : NA 21Apr : NA 21Apr : Mostly Cloudy 21Apr : NA R.J. Burnside & Associates Limited Weather 4 of Sheridan Noise Tables.xlsm