environmental noise impact assessment for the …
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HUGH WILLIAMSON ASSOCIATES INC. Ottawa, Ontario
Postal Address: PO Box 74056, RPO Beechwood, Ottawa, Ontario, K1M 2H9, Canada
Phone/Fax: (613) 747 0983, Email: [email protected], http://www.hwacoustics.ca
ENVIRONMENTAL NOISE IMPACT
ASSESSMENT
FOR THE PROPOSED
KANATA NORTH CATHOLIC
ELEMENTARY SCHOOL
CITY OF OTTAWA
Prepared for
Ottawa Catholic School Board
Prepared by
Hugh Williamson Associates Inc.
20th December, 2016
Environmental noise impact assessment
for the proposed Kanata North Catholic
Elementary School, City of Ottawa
Ottawa Catholic School Board
20th December, 2016
p. i
HUGH WILLIAMSON ASSOCIATES INC.
ENVIRONMENTAL NOISE IMPACT
ASSESSMENT
FOR THE PROPOSED
KANATA NORTH CATHOLIC ELEMENTARY SCHOOL
CITY OF OTTAWA Table of Contents Section Page
Table of Contents i - iii 1.0 Introduction 1 - 2
2.0 Surface Transportation Noise Impacts 3 - 6
3.0 Stationary Source Noise Impacts 7 - 11
4.0 Conclusions and Recommendations 12 - 13
References 14
Environmental noise impact assessment
for the proposed Kanata North Catholic
Elementary School, City of Ottawa
Ottawa Catholic School Board
20th December, 2016
p. ii
HUGH WILLIAMSON ASSOCIATES INC.
Appendix 1 Zoning Plan and Land Use Designations
Figure A1.1 - Zoning Plan - City of Ottawa Zoning Bylaw 2008 – 250
Appendix 2 Surface Transportation Impacts
A2.1 Figures Figure A2.1.1: Site Plan showing Points of Reception Figure A2.1.2: Building Ground Floor Plan Figure A2.1.3: Detailed Plan at Kindergarten Room 141 (Worst Case)
A2.2 Tables Table A2.2.1: Modelled Points of Reception Table A2.2.2: Future Traffic Volumes and Posted Speed Limits Table A2.2.3: Traffic Noise Impacts for Building Component Requirements Table A2.2.4: Traffic Noise Impacts for Ventilation and Warning Clause
Requirements Table A2.2.5: Predicted Indoor Sound Levels
A2.3 City of Ottawa Noise Criteria and Warning Clauses Table A2.3.1 Sound Level Criteria for Outdoor Living Areas
Surface Transportation (Road and Rail) Table A2.3.2 Indoor Sound Level Criteria
Surface Transportation (Road and Rail) Table A2.3.3: Road and Rail Noise
Daytime (07:00 – 23:00) & Nighttime (23:00 – 07:00) Building Component Requirements
Table A2.3.4: Facade Material Requirement for Rail Noise Only Table A2.3.5: Warning Type Clauses (may be used individually or in
combination) Table A2.3.6: Combination of Road and Rail Noise
Day-time (07:00 – 23:00) & Night-time (23:00 – 07:00) Outdoor, Ventilation and Warning Clause Requirements
A2.4 Calculation Details and Software Outputs Appendix 3 Stationary Noise Source Impacts
A3.1 Plans and Figures Figure A3.1.1: Area Plan Showing Receptor Locations
Figure A3.1.2: Site Details & Equipment Locations
Figure A3.1.3: Scenario 1: Worst Case, All equipment in operation,
Day and Evening only (19:00 – 23:00);
Noise Contours: (Noise levels at 4.5 m)
Figure A3.1.4: Scenario 2: Worst Case, All equipment in operation,
Night operation (23:00 – 07:00);
Noise Contours: (Noise levels at 4.5 m)
A3.2 Acoustic Modeling Detail
Environmental noise impact assessment
for the proposed Kanata North Catholic
Elementary School, City of Ottawa
Ottawa Catholic School Board
20th December, 2016
p. iii
HUGH WILLIAMSON ASSOCIATES INC.
Table A3.2.1 Calculation Configuration
Table A3.2.2 Point of Reception Location Table
Table A3.2.3 Point Sources
Table A3.2.4 Noise Source Library
Table A3.2.5 Point of Reception Impacts by Source for Scenario 1
Table A3.2.6 Point of Reception Impacts by Source for Scenario 2
Table A3.2.7 Sample Calculations
A3.3 Stationary Noise Sources Criteria and Impact Assessment
Table A3.3.1: Exclusion Limit Values for One-Hour Equivalent Sound Level
(Leq, dBA) at Outdoor Points of Reception2
Table A3.3.2: Exclusion Limit Values for One-Hour Equivalent Sound Level
(Leq, dBA) at Plane of Window of Noise Sensitive Spaces
Table A3.3.3: Points of Reception
Table A3.3.4:Acoustic Assessment Summary Table - Impacts from Stationary
Noise Sources
Table A3.3.5: Noise Mitigation, Recommended Maximum Outdoor Sound
Power for critical equipment
Resumes, Dr. Hugh Williamson, Michael Wells
Environmental noise impact assessment
for the proposed Kanata North Catholic
Elementary School, City of Ottawa
Ottawa Catholic School Board
20th December, 2016
p. 1
HUGH WILLIAMSON ASSOCIATES INC.
ENVIRONMENTAL NOISE IMPACT
ASSESSMENT
FOR THE PROPOSED
KANATA NORTH CATHOLIC ELEMENTARY SCHOOL
CITY OF OTTAWA
1.0 Introduction
Hugh Williamson Associates Inc. has been retained by the Ottawa Catholic School Board
(OCSB), to undertake a noise impact assessment in relation to satisfying the City of Ottawa
Environmental Noise Control Guidelines (ENCG) for the proposed Kanata North Catholic
Elementary School to be located at Goulbourn Forced Road and Terry Fox Drive, in the City
of Ottawa.
This report describes an assessment of noise impacts from vehicular traffic on Goulbourn
Forced Road and Terry Fox Drive at noise sensitive locations at the proposed school and
stationary noise impacts from the proposed mechanical equipment associated with the
development at noise sensitive points of reception in the surrounding urban environment.
This assessment has been carried out in accordance with City of Ottawa Environmental Noise
Control Guidelines, January, 2013 (ENCG)1 by Hugh Williamson Associates Inc.
The analysis was based on information received electronically from Bryden Martel Architects
Incorporated.
General description of the proposed development
The development is located at the proposed future intersection of Goulbourn Forced Road and
Terry Fox Drive in Kanata Lakes North, as shown in Figure A1.1, Appendix 1.
The proposed development consists of a one storey building rising to approximately 5 m
above grade and 7.6 m above grade at the location of the proposed gymnasium. The ground
floor level houses the entry vestibule, lobby, administration and teachers offices, staff lounge,
kitchen, indoor gymnasium, and, classrooms catering to childcare, preschool, kindergarten
then grades one to eight students. The development includes an outdoor recreation area
including sand pits and asphalt playground as well as parking for staff and visitors.
Mechanical equipment is to be located on the roof of the building. The external rooftop
equipment has been included in the following assessment of stationary noise impacts. Refer to
Figure A3.1.2.
Environmental noise impact assessment
for the proposed Kanata North Catholic
Elementary School, City of Ottawa
Ottawa Catholic School Board
20th December, 2016
p. 2
HUGH WILLIAMSON ASSOCIATES INC.
The site is currently zoned Residential Third Density (R3). As part of the application process
the OCSB is applying to the City of Ottawa to have the site re-zoned to permit the proposed
institutional use.
To the north of the site there is a small parcel of land currently zoned Residential Third
Density (R3). Further north, on the north side of Terry Fox Drive, the land is Zoned
Environmental Protection (EP).
To the east the land is zoned Major Institutional (I1). A vacant lot currently exists in this
direction. Further east, on land zoned I1, lies the Kanata Highlands Public School.
To the south and west of the site the land is zone Residential Third Density (R3).
Refer to zoning map in Appendix 1.
The site and surrounding land is relatively flat with no significant changes in elevation. The
land surrounding the proposed development consists of dense woodland. The assessment has
considered the future development of this land to residential use (i.e. zoned for potential noise
sensitive development).
Acoustic Environment: 1.1.
Sources of environmental noise include noise impacts from vehicular traffic on Goulbourn
Forced Road and Terry Fox Drive and the noise impacts from stationary noise sources
associated with the development including the proposed rooftop mechanical equipment. Refer
Figures A2.1.1, A2.1.2, A3.1.1 and A3.1.2.
The assessment of surface transportation noise impacts in this study have been based on future
traffic projections for Goulbourn Forced Road and Terry Fox Drive for the year 2031. These
projections are contained in Table A2.2.2, Appendix 3, and were based on information
provided in City of Ottawa, Environmental Noise Control Guidelines (ENCG).1
Detailed methodology and assessment criteria, for each of the assessed sources of
environmental noise are provided in Section 2.0 Surface Transportation Noise Impacts and
Section 3.0 Stationary Noise Source Impacts. Section 4.0 provides details on the overall
combined noise impacts with a summary of the recommendations that are required to satisfy
the applicable sound level criteria including recommendations for noise mitigation, air
conditioning, and, warning clauses.
Environmental noise impact assessment
for the proposed Kanata North Catholic
Elementary School, City of Ottawa
Ottawa Catholic School Board
20th December, 2016
p. 3
HUGH WILLIAMSON ASSOCIATES INC.
2.0 Surface Transportation Noise Impacts
Introduction 2.1.
This section describes an assessment of noise impacts from traffic on Goulbourn Forced Road
and Terry Fox Drive on the indoor noise sensitive areas of the proposed development. Refer
Figures A2.1.1 to A2.1.3, Appendix 2.1.
Methodology and Assessment Criteria 2.2.
The outdoor and indoor noise criteria are provided in Appendix A2.3. This criterion is to be
met by proposed noise sensitive developments using control measures such as, site design, set-
backs, noise barriers, acoustical requirements for building components and ventilation
requirements. In some circumstances, warning clauses related to noise are required on titles,
leases and sale agreements.
The noise assessment methodology is summarised as follows:
Noise generated by road traffic is predicted using STAMSON5, a traffic noise model
developed by the Ontario Ministry of Environment and Climate Change (MOECC).
STAMSON takes into account such factors as distance from the road, height, nature of the
intervening buildings and terrain, ground absorption, and noise barriers, if present.
Noise from future road traffic is predicted using STAMSON at critical points of reception
at the proposed development. Locations to be considered include Outdoor Living Areas
(OLAs) as well as ‘plane of window’ locations, where classrooms or offices are located in
schools. Noise levels are predicted for various periods such as Day (07:00 to 23:00) and
Night (23:00 to 07:00) periods. A-weighting is a frequency correction to sound pressure
levels which approximates the response of the human ear and is are predicted as A-
weighted equivalent sound levels, LEQ, (i.e. average used extensively for environmental
noise assessments. Results are expressed in dBA, A-weighted decibels.
Based on the predicted sound levels, the specifications for mitigation measures such as
noise barriers, requirement for building component design, ventilation requirements and
warning clauses are determined according to criteria established by the City of Ottawa
ENCG as described below.
The noise criteria for classrooms and office in school area are set out in Tables A2.3.2,
Appendix A2.3.
Building component requirements depend on the predicted outdoor noise levels and are set out
in Table A2.3.3, Appendix A2.3. Where building component requirements need to be
designed to achieve specific indoor sound levels, restrictions may apply such as the
construction and areas of walls, windows, and doors.
Environmental noise impact assessment
for the proposed Kanata North Catholic
Elementary School, City of Ottawa
Ottawa Catholic School Board
20th December, 2016
p. 4
HUGH WILLIAMSON ASSOCIATES INC.
The ventilation requirements, outdoor noise control measures and warning clause
requirements are dependent on predicted outdoor noise levels and are set out in Tables A2.3.5
and A2.3.6, Appendix 2.3. Warning clauses, when required, are to be placed on title
documents, sale agreements, and lease agreements.
Points of Reception 2.3.
For assessment of indoor sound levels, points of reception POR 1T, POR 2T and POR 3T
were selected at locations on the building most exposed to noise from Goulbourn Forced Road
and Terry Fox Drive. Outdoor sound levels were calculated at these worst case locations on
the proposed ground floor. Plane of Window locations are used as windows represent the least
‘sound proof’ building component of the exterior partition.
The predicted sound levels at each point of reception are compared to relevant criteria to
determine the level of mitigation required to achieve the complying outdoor and indoor sound
levels as set out in Appendix 2.3.
The points of reception selected for detailed analysis are listed in Table A2.2.1 and shown in
Figures A2.1.1 to A2.1.3.
It is noted the proposed outdoor recreation area associated with the school is not considered to
be noise sensitive for the purpose of this assessment.
Noise Source Modelling and Data 2.4.
The following road traffic data was used for assessing the traffic noise impacts at each point of
reception. The data was taken from the City of Ottawa ENCG which provides ultimate future
traffic volume data for various roadways based on roadway class and number of lanes. The
traffic data used represents future traffic volumes and correspond to a ‘mature state of
development’, in the City’s Official Plan.6
Goulbourn Forced Road is assessed as a 2-Lane Major Collector (2-UMCU), with 12,000
AADT as set out in Table 1.7, City of Ottawa Environmental Noise Control Guidelines.1,
Posted speed limit of 50 km/hr.
Terry Fox Drive is assessed as a 4-Lane Urban Arterial Divided (4-UAD), with 35,000
AADT as set out in Table 1.7, City of Ottawa Environmental Noise Control Guidelines.1,
Posted speed limit of 60 km/hr. This takes into consideration it’s future expansion from its
current classifiction (2-UAU).
The proportions of traffic types and times recommended in the ENCG (Day / Night split 92 /
8, with medium trucks 7%, heavy trucks 5 %) were used to develop the traffic data for each
road segment as shown in Table A2.2.2, Appendix 2.2. The surrounding topography was
assumed to be a generally flat, reflective surface. Refer to Table A2.2.2: Future Traffic
Volumes and Posted Speed Limits, Appendix 2.
Environmental noise impact assessment
for the proposed Kanata North Catholic
Elementary School, City of Ottawa
Ottawa Catholic School Board
20th December, 2016
p. 5
HUGH WILLIAMSON ASSOCIATES INC.
Noise Impact Assessment 2.5.
Based on the future traffic projections, sound levels were predicted at each of the worst-case
point of reception, POR 1T, POR 2T and POR 3T using the MOECC STAMSON noise
modelling software. The results of these predictions are contained in Tables A2.2.3 to A2.2.5.
Samples of the outputs of the STAMSON software are provided in Appendix 2.4.
The implications of the estimated future noise levels, in relation to the ENCG criteria as set
out in Appendix 2.3, are discussed below.
Building Components
As shown in Tables A2.2.3, the predicted noise levels at plane of windows locations for the
Kindergarten - Room 141, and the Offices - Room TBA and Room 109, are greater than
65 dBA during the daytime period 07:00 to 23:00, therefore building components (walls,
windows, etc.) must be designed to achieve complying indoor sound levels.
Note that these locations are the worst case, that is, the part of the building most exposed to
road traffic noise, hence, the building components designed for these locations are sufficient to
meet the indoor sound level criteria at all locations on the building.
Indoor sound levels in the Kindergarten – Room 141 have been estimated using standard
acoustical procedures, see IBANA-Calculation output in Appendix 2.4, which take into
account window areas, wall area, room size, room absorption, as well as, the sound
transmission characteristic of the external walls and windows.
External walls are proposed to be constructed with 90mm masonry veneer, 25mm air
space, 75mm rigid insulation, Air / Vapour barrier, 13mm exterior grade sheathing
with either 152mm steel studs w/ batt insulation and 16mm gypsum board or 140 mm
concrete block. Test data for a similar construction modelled as 13mm gypsum board,
140 mm studs on 406 mm centres with glass fibre cavity insulation, 11 mm OSB, 16
mm airspace, 89 mm brick has been used. Sound transmission characteristics of these
components have been estimated based on National Research Council test data.
Alternative construction is permissible providing it has a minimum STC rating of 53.
Windows have been modeled as Aluminium casement double glazed operable
windows (3 mm glass thickness, 13 mm air gap, 3 mm glass thickness) with sound
transmission characteristics based on national Research Council test data. Alternative
construction is permissible providing it has a minimum STC rating of 28.
The resulting estimates of indoor sound levels comply with the daytime sound level
criteria. As such, with the proposed wall and window construction as specified above,
indoor sound levels will meet the sound level criteria set out in Table A2.3.2. Alternative
construction is acceptable providing the minimum STC ratings recommended above are
achieved.
Environmental noise impact assessment
for the proposed Kanata North Catholic
Elementary School, City of Ottawa
Ottawa Catholic School Board
20th December, 2016
p. 6
HUGH WILLIAMSON ASSOCIATES INC.
Ventilation Requirements & Warning Clauses
The predicted plane of window noise levels shown in Table A2.2.4 indicate that there is a
requirement that school be fitted with central ducted air-conditioning. It is recommended that
the Warning Clause of Type D, as noted below, taken from the ENCG, be applied.
"This school 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 City's and the Ministry of Environment's noise criteria."
This clause should be included in Agreements of Purchase and Sale or Lease Agreements, and
incorporated into the relevant Development Agreements which are registered on title of the
property.
Environmental noise impact assessment
for the proposed Kanata North Catholic
Elementary School, City of Ottawa
Ottawa Catholic School Board
20th December, 2016
p. 7
HUGH WILLIAMSON ASSOCIATES INC.
3.0 Stationary Noise Source Noise Impacts
Introduction 3.1.
Stationary noise impacts from operations of mechanical equipment have been predicted at
nearby noise sensitive points of reception in the surrounding environment with
recommendations for noise mitigations measures where necessary to meet the City of Ottawa
and MOECC requirements.
Refer to Figure A3.1.1 for area plan showing points of reception selected for analysis and
Figure A3.1.2 for detailed site plan showing source locations included in this assessment at the
proposed development.
The noise assessment methodology for impacts from stationary sources is
summarised below:
Identification of noise sensitive receptors in the vicinity of the school. Potential noise
sensitive receptors include residences, motels, places of worship, schools, hospitals and
land zoned for noise sensitive use.
Determination of the City of Ottawa1 and MOECC
2 sound level limits which will
apply at each of the noise sensitive receptors.
Identification of the sources of noise that will arise from equipment operations. In the
current study, the strengths of the various noise sources were obtained from
manufacturer’s data. For critical equipment a maximum outdoor sound power rating is
recommended.
Based on the strengths of the individual noise sources, noise levels due to operations
are predicted at nearby noise sensitive receptors using a prediction procedure which is
favoured by the City of Ottawa1 and MOECC
2. The City of Ottawa
1 and MOECC
2
methodology requires that compliance be assessed under predictable “worst case”
conditions for normal operations.
Assessment of compliance of the noise impacts from the proposed equipment
operations with City of Ottawa and MOECC sound level limits. Where appropriate,
mitigation measures are recommended such that compliance is achieved at all
receptors.
Environmental noise impact assessment
for the proposed Kanata North Catholic
Elementary School, City of Ottawa
Ottawa Catholic School Board
20th December, 2016
p. 8
HUGH WILLIAMSON ASSOCIATES INC.
Points of Reception 3.2.
The critical noise sensitive points of reception, which have been selected for detailed analysis,
are shown in Figure A3.1.1 and A3.1.2. These were selected as being the points of reception in
the surrounding environment most likely impacted by noise from the development.
Other noise sensitive points of reception are at greater distances and will be less affected by
noise from the operations of equipment. Table A3.3.3 lists the noise sensitive points of
reception selected for analysis.
3.2.1. Assessment Criteria & Performance Limits:
Sound level limits as specified in the City of Ottawa ENCG1 and MOECC guideline NPC-
3002, depend on the acoustical classification of the area as Class 1, 2, 3 or 4.
Class 1 area 'an area with an acoustical environment typical of a major population
centre, where the background sound level is dominated by the activities of people,
usually road traffic, often referred to as urban hum.’
Class 2 area 'an area with an acoustical environment that has qualities representative
of both Class 1 and Class 3 areas: sound levels characteristic of Class 1 during daytime
(07:00 to 19:00 or to 23:00 hours); and, low evening and night background sound level
defined by natural environment and infrequent human activity starting as early as
19:00 hours (19:00 or 23:00 to 07:00 hours).’
Class 3 area 'a rural area with an acoustical environment that is dominated by natural
sounds having little or no road traffic, such as: a small community; agricultural area; a
rural resort area such as a cottage or resort area; or, a wilderness area. '
Class 4 area ‘an area or specific site that would otherwise be defined as Class 1 or 2
and which: is an area intended for development with new noise sensitive land use(s)
that are not yet built; is in proximity to existing, lawfully established stationary
source(s); and, has formal confirmation from the land use planning authority with the
Class 4 area classification which is determined during the land use planning process.
Additionally, areas with existing noise sensitive land use(s) cannot be classified as
Class 4 areas.’
Due to the relatively low levels of road traffic on Goulbourn Forced Road and the proposed
sub-urban streets to the south and west of the site the area in which POR 1, POR 2, POR 3 and
POR 4 are located is classified as Class 2 Area (Urban).
For a Class 2 Area (Urban) the applicable outdoor sound level limits at noise sensitive
receptors, based on 1-hour equivalent sound levels, LEQ, are either the exclusion noise
limits given in Table A3.3.1 and Table A3.3.2, or higher limits if established by an
assessment of background noise.
Environmental noise impact assessment
for the proposed Kanata North Catholic
Elementary School, City of Ottawa
Ottawa Catholic School Board
20th December, 2016
p. 9
HUGH WILLIAMSON ASSOCIATES INC.
A background sound assessment was not carried out; hence, the exclusion level limits set
out in Table A3.3.1 and A3.3.2 apply at all receptors according to their location in a Class 2
Area (Urban).
Noise Source Summary 3.3.
Detailed design of the Terry Fox Catholic Elementary School has yet to be completed in
relation to the selection of HVAC mechanical equipment. However, the Terry Fox School as
proposed will be almost identical to the recently completed Avalon Catholic Elementary
School on Esprit Drive, Ottawa. Hence, HVAC noise sources for the Terry Fox Catholic
Elementary School are based on the sizes of the HVAC equipment in the Avalon School.
The following noise sources have been used to model noise generated by on-site operations. In
brackets are the shortened names of the noise sources as used in the acoustic model. The
characteristics of these sources, as used in acoustic modelling, are summarized in Table
A3.2.3 and Table A3.3.4.
Nine roof top HVAC units, RTU-1 to 9, are proposed for the Terry Fox School. The
cooling capacities of these RTU’s, based on data from Avalon School.
o RTU 1, 5 and 7 have been modelled on the AAON_RN_6_10_Ton unit with a
5 dB reduction in sound power (Source: AAON_RN_6_10_Ton)
o RTU 2, 3, 4, 6, 8 and 9 have been modelled on the AAON_RN_09_20_Ton
unit with a 6 dB reduction in sound power (Source: AAON_RN_09_20_Ton)
There will also number of exhaust fans of various sizes. Based on Avalon School, only
three of these fans will have capacities of greater than 1000 cubic feet per minute, cfm,
and only fans with these capacities are considered to be significant noise sources in this
study (Source: F-1, F-2, and F-3).
The strengths of all noise sources, i.e. the sound powers shown in Table A3.2.3 and used in
this analysis, are taken from manufacturers data and acoustic formula of equipment.
It is noted that there is additional equipment proposed at the development. Due to the
proposed size and internal, or shielded location, this equipment was determined to be
insignificant for the purpose of this study.
The locations of the significant noise sources included in this assessment can be found on
Figure A3.1.2.
Hours of Operation
Daytime and Evening Operations (07:00 – 23:00) - During the Daytime and Evening period,
all significant noise sources are assumed to be in operation. HVAC equipment has been
assessed operating at maximum capacity during this period.
Environmental noise impact assessment
for the proposed Kanata North Catholic
Elementary School, City of Ottawa
Ottawa Catholic School Board
20th December, 2016
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HUGH WILLIAMSON ASSOCIATES INC.
Night Operations (23:00 – 07:00) – During the nighttime period all significant noise sources
are assumed to be in operation. HVAC equipment has been assessed operating at 50%
capacity during this period i.e. in operation 30 minutes per hour. This is considered a
conservative assumption for the nighttime (23:00 and 07:00) period of operation.
Impact Assessment from Stationary Noise Sources 3.4.
Noise levels have been predicted at the critical receptors using “worst case” assumptions
under normal operations and using the ISO sound propagation methodology5, as implemented
in the sound prediction software Cadna-A, version 4.6.155. The ISO methodology, which is
favored by the City of Ottawa and the MOECC, provides a conservative (i.e. high) estimate of
the noise level at each receptor taking into account adverse wind and meteorological
conditions.
The estimation method includes the following.
Distance attenuation is based on spherical spreading.
Atmospheric attenuation.
Ground attenuations, as appropriate.
Barrier attenuation, as appropriate.
In order to consider case of worst noise impacts, the following operational scenarios have been
modeled. In general, the worst case impacts are those which occur when all equipment is in
operation. The following two worst case scenarios are presented in this report.
Scenario 1: Worst case, all equipment in operation – Day and Evening operation
(07:00 – 23:00). Refer to Figure A3.1.3 for predicted noise impacts.
Scenario 2: Worst case, all equipment in operation – Night operation, Mechanical
equipment operating at fifty percent capacity (23:00 – 07:00). Refer to
Figure A3.1.4 for predicted noise impacts.
Noise impacts at critical points of reception have been completed for daytime, evening and
nighttime periods. The analyzed scenarios are for worst case conditions and operations of
equipment.
In Table A3.3.4, estimated noise levels at the points of reception for the worst case scenario
are compared with the applicable sound level limits. The sound level limits applicable are the
lowest sound level limits that apply at each point of reception for the period of operation.
More detailed estimates, for all sources are contained in Appendix 3, with Tables A3.2.5 and
A3.2.6 providing a summary of predicted noise impacts at each receptor for the individual
sources.
Environmental noise impact assessment
for the proposed Kanata North Catholic
Elementary School, City of Ottawa
Ottawa Catholic School Board
20th December, 2016
p. 11
HUGH WILLIAMSON ASSOCIATES INC.
Mitigation Measures 3.5.
It was found that noise impacts from the proposed roof top RTU’s was critical at nearby noise
sensitive points of reception. Hence, maximum sound power levels for this equipment is
provided in Table A3.3.5. The maximum sound powers are based on noise data for equipment
with a reduction in sound power in order to achieve compliance. To achieve compliance, the
sound powers of the RTU’s must not exceed the levels given in Table A3.3.5.
Environmental noise impact assessment
for the proposed Kanata North Catholic
Elementary School, City of Ottawa
Ottawa Catholic School Board
20th December, 2016
p. 12
HUGH WILLIAMSON ASSOCIATES INC.
4.0 Conclusions and Recommendations
A noise impact assessment of surface transportation and stationary noise source impacts has
been conducted according to the City of Ottawa guidelines.
Noise generated from vehicular traffic on Goulbourn Forced Road and Terry Fox Drive as
well as mechanical equipment operations at the proposed school has been assessed at critical
locations.
Noise impacts have been estimated for worst case conditions according to City of Ottawa and
MOECC guidelines.
It has been found that noise levels at the proposed development will be in compliance with
the City of Ottawa and MOECC sound level limits providing the recommendations as
specified in this report are followed.
The recommendations are summarized as follows:
Surface Transportation Noise Impact Conclusions and 4.1.
Recommendations
4.1.1. Building Components:
Building components, including walls and windows, are to be constructed as
specified in this report to achieve complying indoor sound levels. Alternative
construction is acceptable providing the minimum STC ratings recommended are
achieved.
4.1.2. Ventilation Requirements & Warning Clauses
The predicted plane of window noise levels shown in Table A2.2.5 indicate that there
is a requirement that units be fitted with central ducted air-conditioning. It is
recommended that the Warning Clause Type D noted below, taken from the ENCG, be
applied to these units.
"This school 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 City's and the Ministry of Environment's noise criteria."
This clause should be included in Agreements of Purchase and Sale or Lease Agreements, and
incorporated into the relevant Development Agreements which are registered on title of the
property.
Stationary Noise Source Impacts Conclusions and Recommendations 4.2.
It has been found that with the recommended noise mitigation measures as detailed in this
report, noise levels at nearby receptors due to operations of mechanical equipment at the
Environmental noise impact assessment
for the proposed Kanata North Catholic
Elementary School, City of Ottawa
Ottawa Catholic School Board
20th December, 2016
p. 13
HUGH WILLIAMSON ASSOCIATES INC.
school will be in compliance with the applicable City of Ottawa and MOECC sound level
limits.
Recommended mitigation measures include maximum outdoor sound power ratings for
mechanical equipment as noted in Table A3.3.5. Due to the preliminary stage of mechanical
equipment design at the development it is recommended that the final mechanical layout be
reviewed by a qualified acoustical consultant prior to construction to ensure compliance with
City of Ottawa noise criteria.
Michael Wells, B.Architecture (Hons), B.Sc.Arch. Registered Architect of NSW, ARN: 8111
Member, Canadian Acoustical Society
Hugh Williamson, Ph.D., P.Eng.
Member, Canadian Acoustical Society
Environmental noise impact assessment
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Elementary School, City of Ottawa
Ottawa Catholic School Board
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HUGH WILLIAMSON ASSOCIATES INC.
References
1. City of Ottawa Environmental Noise Control Guidelines, January 2016.
2. Ministry of Environment Publication NPC-300, Environmental Noise Guideline
Stationary and Transportation Sources - Approval and Planning, August 2013.
3. Ministry of Environment, Sample Application Package, Basic Comprehensive
Certificate of Approval (Air and Noise), July 2009.
4. Ministry of Environment, Ontario Road Noise Analysis Method for Environment and
Transportation (ORNAMENT), 1989.
5. Ministry of Environment, STAMSON Software, Version 5.03, 1996. (Software version
of References 5 and 6.)
6. City of Ottawa “Official Plan - Annex 10”, 2011.
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Appendix 1
Zoning Plan and Land Use Designations
Contents:
Figure A1.1: Zoning Plan - City of Ottawa Zoning Bylaw 2008 – 250
Legend for Land Use Designations:
I1 - Minor Institutional Zone
R3 - Residential Third Density Zone
O1 - Parks and Open Space Zone
EP - Environmental Protection Zone
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Figure A1.1 - Zoning Plan - City of Ottawa Zoning Bylaw 2008 – 250
North
Proposed development
site
Terry Fox Drive
Goulbourn Forced Road (Approximate future
location)
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Appendix 2 Surface Transportation Impacts
Contents:
A2.1 Figures
Figure A2.1.1: Site Plan showing Points of Reception Figure A2.1.2: Building Ground Floor Plan Figure A2.1.3: Detailed Plan at Kindergarten Room 141 (Worst Case)
A2.2 Tables
Table A2.2.1: Modelled Points of Reception Table A2.2.2: Future Traffic Volumes and Posted Speed Limits Table A2.2.3: Traffic Noise Impacts for Building Component Requirements Table A2.2.4: Traffic Noise Impacts for Ventilation and Warning Clause
Requirements Table A2.2.5: Predicted Indoor Sound Levels
A2.3 City of Ottawa Noise Criteria and Warning Clauses
Table A2.3.1 Sound Level Criteria for Outdoor Living Areas Surface Transportation (Road and Rail)
Table A2.3.2 Indoor Sound Level Criteria Surface Transportation (Road and Rail)
Table A2.3.3: Road and Rail Noise Daytime (07:00 – 23:00) & Nighttime (23:00 – 07:00) Building Component Requirements
Table A2.3.4: Facade Material Requirement for Rail Noise Only Table A2.3.5: Warning Type Clauses (may be used individually or in
combination) Table A2.3.6: Combination of Road and Rail Noise
Day-time (07:00 – 23:00) & Night-time (23:00 – 07:00) Outdoor, Ventilation and Warning Clause Requirements
A2.4 Calculation Details and Software Outputs
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Appendix A2.1
Figures
Contents:
Figure A2.1.1: Site Plan showing Points of Reception Figure A2.1.2: Building Ground Floor Plan showing Points of Reception Figure A2.1.3: Detailed Plan at Kindergarten Room 141 (Worst Case)
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HUGH WILLIAMSON ASSOCIATES INC.
Figure A2.1.1: Site Plan showing Points of Reception (Source: Bryden Martel Architects Inc.)
North
140 m
135 m
130 m
Te
rry F
ox
Dri
ve
(A
ss
ess
ed
as
4-U
AD
) C
en
tre
lin
e s
ho
wn
da
sh
ed
)
POR 1T (Plane of Window)
POR 2T (Plane of Window)
Goulbourn Forced Road (Future location)
POR 3T (Third Floor Plane of
Window)
190 m
33
m
28
m
58
m
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HUGH WILLIAMSON ASSOCIATES INC.
Figure A2.1.2: Building Ground Floor Plan (Source: Bryden Martel Architects Inc.)
POR 2T Office - Room
TBA (Plane of Window)
POR 1T Kindergarten -
Room 141 (Plane of
Window)
POR 3T Principles
Office - Room 109 (Plane of Window)
North
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HUGH WILLIAMSON ASSOCIATES INC.
Figure A2.1.3: Detailed Plan at Kindergarten Room 141 – Worst Case (Source: Bryden Martel Architects Inc.)
Kindergarten Room 141 area: 124 m2
External wall area (facing Goulbourn Froced Road)
18.5 m2
Window area: (facing Goulbourn Forced Road)
7.1 m2
External wall area (facing Terry Fox Drive)
48 m2
External Wall
Internal wall
POR 1T Kindergarten - Room 141 (Plane of Window facing Goulbourn Forced Road)
POR 1T at Wall Kindergarten - Room 141
(Centre of wall facing Terry Fox Drive. Predicted
outdoor noise impacts at this location were used to
calculate the combined noise impact on the interior
side of the building)
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Appendix A2.2
Tables
Contents:
Table A2.2.1: Modelled Points of Reception Table A2.2.2: Future Traffic Volumes and Posted Speed Limits Table A2.2.3: Traffic Noise Impacts for Building Component Requirements Table A2.2.4: Traffic Noise Impacts for Ventilation and Warning Clause Requirements Table A2.2.5: Predicted Indoor Sound Levels
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Table A2.2.1: Modelled Points of Reception
Symbol
Location***
Goulbourn Force Road Terry Fox Drive Height*
(m) Description
Distance (m)
Angle of exposure
Distance (m)
Angle of exposure
POR 1T Kindergarten (Room 141)
33 180 deg 140 90 deg 2 Plane of window
POR 2T Office
(Room TBA) 58 90 deg 135 180 deg 2 Plane of window
POR 3T Principles Office
(Room 109) 28 180 deg 190 90 deg 2 Plane of window
*Height measured from street level at centre of plane of window location.
Table A2.2.2: Future Traffic Volumes and Posted Speed Limits*
Road Segment
Input Data Day Volumes, 7:00 - 23:00
Night Volumes, 23:00 - 7:00
Segment AADT Posted Split Split Medium Heavy Cars Medium Heavy Cars Medium Heavy
Type (24
hours) Speed Day Night Trucks Trucks Trucks Trucks Trucks Trucks
kph 7:00-23:00
23:00-7:00 % % no. no. no. no. no. no.
Goulbourn Forced Road 2-UMCU, 2 lane Major Collector - Future Mature Traffic Volumes from City of Ottawa Guidelines
2-UMCU 12,000 50 0.92 0.08 7 5 9715 773 552 845 67 48
Terry Fox 4-UAD, 4 lane urban arterial divided) - Future Mature Traffic Volumes from City of Ottawa Guidelines**
4-UAD 35,000 50 0.92 0.08 7 5 28336 2254 1610 2464 196 140
* Traffic and Road Parameters from City of Ottawa, “Environmental Noise Control Guideline” (ENCG). **It is noted that Terry Fox Drive is cuurently a two lane urban arterial (2-UAU). To take into account future mature state impacts we have assessed it as a four lane urban arterial divided (4-UAD).
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Table A2.2.3: Traffic Noise Impacts for Building Component Requirements
Point of Location Estimated Future
Noise Level* (dBA) Building
Reception Day Night Component Requirement
POR 1T Ground floor level window facing
Goulbourn Forced Road (Kindergarten Room 141)
65.81** 58.21***
Building components (walls, windows, etc.) must be designed to achieve indoor sound level criteria refer
Table A2.3.2.
POR 2T Ground floor level window facing
Terry Fox Drive (Office Room TBA)
65.21** 57.62*** Building components (walls, windows, etc.) must be designed to achieve indoor sound level criteria refer
Table A2.3.2.
POR 3T Ground floor level window facing
Goulbourn Forced Road (Principles Office Room 109)
65.96** 58.36*** Building components (walls, windows, etc.) must be designed to achieve indoor sound level criteria refer
Table A2.3.2.
*Daytime Noise Impacts based on Leq 16 h (07:00 – 23:00), Nighttime Noise Impacts based on Leq 8 h (23:00 – 07:00). See Table 2.3.3. **Daytime Noise Level predictions for Classroom / Office Areas > 65 dBA therefore building components need to be designed. ***Nighttime Noise Level predictions shown for information purposes only. Note: < 60 dBA therefore compliance with Ontario Building Code would be sufficient during this period.
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HUGH WILLIAMSON ASSOCIATES INC.
Table A2.2.4: Traffic Noise Impacts for Ventilation and Warning Clause Requirements
Point of Reception
Location (see Figures 1 to 7) Sound Levels due
to Road Traffic
(POR) Day Night Ventilation Warning
(dBA) (dBA) Requirements(1) Clauses(2)
POR 1T Ground floor level window facing
Goulbourn Forced Road (Kindergarten Room 141)
65.81 58.21 Central ducted air-
conditioning Required Type D
POR 2T Ground floor level window facing
Terry Fox Drive (Office Room TBA)
65.21 57.62 Central ducted air-
conditioning Required Type D
POR 3T Ground floor level window facing
Goulbourn Forced Road (Principles Office Room 109)
65.96 58.36 Central ducted air-
conditioning Required Type D
*Daytime Noise Impacts based on Leq 16 h (07:00 – 23:00), Night Impacts based on Leq 8 h (23:00 – 07:00). Notes: 1. Ventilation requirements - see Table A2.3.5, Appendix 2.3. 2. Warning Clause Requirements - See Tables A2.3.5 and A2.3.6, Appendix 2.3.
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Table A2.2.5: Predicted Indoor Sound Levels*
Facade 1
Facade 2 Total City
Criterion
(dBA)
Area Window Wall Outdoor Indoor Area Window Wall Outdoor Indoor
Combined Indoor Level
Unit /
Room
(Worst Case)**
Period Point of Reception
(POR)
Level Level
Point of Reception
(POR) Level Level
(m2) (m2) (m2) (dBA) (dBA) (m2) (m2) (m2) (dBA) (dBA) (dBA)
Kindergarten
(Room 141)
Day POR 1T
(facing Goulbourn Forced Road)
124 7.1 18.5 66 29
POR 1T***
(facing Terry Fox
Drive)
124 - 48 66 19 29.4 45
*Prediction Method: IBANA Calculations (Refer to Appendix 2) **Most exposed location during the daytime period. ***Predicted Traffic Noise Levels at the centre of this solid wall were calculated to be 66 dBA during the daytime period.
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Appendix 2.3
City of Ottawa Noise Criteria and Warning Clauses
For further information refer to:
City of Ottawa Environmental Noise Control Guidelines1 (ENCG) MoE Guidelines, Noise Assessment in Land Use Planning2
Contents:
Table A2.3.1 Sound Level Criteria for Outdoor Living Areas Surface Transportation (Road and Rail)
Table A2.3.2 Indoor Sound Level Criteria
Surface Transportation (Road and Rail) Table A2.3.3: Road and Rail Noise
Daytime (07:00 – 23:00) & Nighttime (23:00 – 07:00) Building Component Requirements
Table A2.3.4: Facade Material Requirement for Rail Noise Only Table A2.3.5: Warning Type Clauses (may be used individually or in
combination) Table A2.3.6: Combination of Road and Rail Noise
Day-time (07:00 – 23:00) & Night-time (23:00 – 07:00) Outdoor, Ventilation and Warning Clause Requirements
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Table A2.3.1 Sound Level Criteria for Outdoor Living Areas* Surface Transportation (Road and Rail)
Time Period
Leq 16 hr (dBA)
16 hr, 07:00 – 23:00
55
*Reference: ENCG
1 Table 1.5
Table A2.3.2 Indoor Sound Level Criteria* Surface Transportation (Road and Rail)
Type of Space
Leq (Time Period (dBA))
Roadways, Transitways
and LRT
Rail (diesel engines/
locomotives)
General offices, reception areas, retail stores, etc. (Time period: 16 hr., 07:00 – 23:00)
50 45
Living/dining areas of residences, hospitals, schools, nursing/retirement homes, day-care centres, theatres, places of worship, libraries, individual semi-private offices, conference rooms, reading rooms, etc. (Time period: 16 hr., 07:00 – 23:00)
45 40
Sleeping quarters of hotels/motels (Time period: 8 hr., 23:00 – 07:00)
45 40
Sleeping Quarters of residences, hospitals, nursing/retirement homes, etc. (Time period: 8 hr., 23:00 – 07:00)
40 35
*Reference: ENCG
1 Table 1.6
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Table A2.3.3: Road and Rail Noise* Daytime (07:00 – 23:00) & Nighttime (23:00 – 07:00) Building Component Requirements
Assessment Location & Time
Outdoor Leq (dBA)
Building Component Requirements
Plane of the Living/Dining Room Windows
Daytime (07:00 – 23:00)
Road
Less than or equal to 65
Building compliant with Ontario Building Code
Greater than 65
Building components (walls, windows, etc.) must be designed to achieve indoor sound level criteria in Table A1.2.
Rail
Less than or equal to 60
Building compliant with Ontario Building Code
Greater than 60
Building components (walls, windows, etc.) must be designed to achieve indoor sound level criteria in Table A1.2.
Plane of Bedroom Window
Nighttime (23:00 – 07:00)
Road
Less than or equal to 60
Building compliant with Ontario Building Code
Greater than 60
Building components (walls, windows, etc.) must be designed to achieve indoor sound level criteria in Table A1.2.
Rail
Less than or equal to 55
Building compliant with Ontario Building Code
Greater than 55
Building components (walls, windows, etc.) must be designed to achieve indoor sound level criteria in Table A1.2.
*Reference: ENCG
1 Table 1.8
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Table A2.3.4: Facade Material Requirement for Rail Noise Only*
Assessment
Location
Distance
to Railway
Sound Level
dBA
Facade Material
Requirement
Plane of Bedroom Window
24 hr.
Less than 100 m
Leq 24 hr less than or equal to 60
No additional requirement
Leq 24 hr greater than 60
Brick veneer or acoustically equivalent
Greater than 100 m
Leq 24 hr less than or equal to 60
No additional requirement
Leq 24 hr greater than 60
No additional requirement
*Reference: ENCG
1 Table 1.9
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Table A2.3.5: Combination of Road and Rail Noise* Day-time (07:00 – 23:00) & Night-time (23:00 – 07:00) Outdoor, Ventilation and Warning Clause Requirements
Assessment Location & Time
Outdoor Leq
(dBA)
Ventilation Requirements
Outdoor Control Measures
Warning Clauses
(see Table A1.6)
Outdoor Living Area (OLA)
Day-time (07:00 – 23:00)
Less than or equal to 55
N/A None Required Not Required
Greater than 55 to less than 60
N/A Control Measures (barriers) not required but should be considered.
Type A required if resultant Leq exceeds 55 dBA
Greater than 60
N/A
Control measures (barriers) required to reduce the Leq to below 60 dBA and as close to 55 dBA as technically, economically and administratively feasible.
Type B required if resultant Leq exceeds 55 dBA
Plane of the Living/Dining Room Windows
Day-time (07:00 –23:00)
Less than or equal to 55
None Required N/A Not Required
Greater than 55 to less than or equal to 65
Forced air heating with provision for central air-conditioning
N/A Required Type C
Greater than 65
Central ducted air-conditioning
N/A Required Type D
Plane of Bedroom Window
Night-time (23:00 – 07:00)
Less than or equal to 50
None Required N/A Not Required
Greater than 50 to less than or equal to 60
Forced air heating with provision for central ducted air-conditioning
N/A Required Type C
Greater than 60
Central ducted air-conditioning
N/A Required Type D
*Reference: ENCG
1 Table 1.10
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Table A2.3.6: Warning Type Clauses (may be used individually or in combination)*
Type
Warning Clause
Type A
"Purchasers/Tenants are advised that sound levels due to increasing (road) (transitway) (rail) (air) traffic may occasionally interfere with some activities of the dwelling occupants as the sound levels exceed the City's and the Ministry of Environment's noise criteria."
Type B
"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) (transitway) (rail) (air) traffic may on occasions interfere with some activities of the dwelling occupants as the sound levels exceed the City's and the Ministry of Environment's noise criteria."
Type C
"This dwelling unit has been fitted with a forced air heating system and the ducting etc. was sized to accommodate central 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 City's and the Ministry of Environment's noise criteria. (Note: The location and installation of the outdoor air conditioning device should be done so as to comply with the noise criteria of MoE Publication NPC-216, Residential Air Conditioning Devices and thus minimize the noise impacts on and in the immediate vicinity of the subject property."
Type D
"This dwelling unit 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 City's and the Ministry of Environment's noise criteria."
Type E “Purchasers/tenants are advised that due to the proximity of the adjacent industry (facility) (utility), sound levels from the industry (facility) (utility) may at times be audible.
*Reference: ENCG
1 Table 1.13 and MoE Guidelines
4
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Appendix 2.4
Calculation Details and Software Outputs
Contents: Sample Acoustical outputs from STAMSON and IBANA Calculations:
Stamson: POR 1 – Day
POR 2 – Day POR 3 – Day
Ibana: POR 1 – Day Wall facing Terry Fox POR 1 – Day Wall facing Goulbourn Forced Road
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HUGH WILLIAMSON ASSOCIATES INC.
STAMSON 5.0 SUMMARY REPORT Date: 18-12-2016
16:32:00
MINISTRY OF ENVIRONMENT AND ENERGY / NOISE ASSESSMENT
Filename: por1d.te Time Period: 16 hours
Description: POR1 DAY PLANE OF WINDOW
Road data, segment # 1: GOULBOURN
---------------------------------
Car traffic volume : 9715 veh/TimePeriod
Medium truck volume : 773 veh/TimePeriod
Heavy truck volume : 552 veh/TimePeriod
Posted speed limit : 50 km/h
Road gradient : 0 %
Road pavement : 1 (Typical asphalt or concrete)
Data for Segment # 1: GOULBOURN
-------------------------------
Angle1 Angle2 : -90.00 deg 90.00 deg
Wood depth : 0 (No woods.)
No of house rows : 0
Surface : 2 (Reflective ground
surface)
Receiver source distance : 33.00 m
Receiver height : 2.00 m
Topography : 1 (Flat/gentle slope; no
barrier)
Reference angle : 180.00
Road data, segment # 2: TERRY FOX
---------------------------------
Car traffic volume : 28336 veh/TimePeriod
Medium truck volume : 2254 veh/TimePeriod
Heavy truck volume : 1610 veh/TimePeriod
Posted speed limit : 60 km/h
Road gradient : 0 %
Road pavement : 1 (Typical asphalt or concrete)
Data for Segment # 2: TERRY FOX
-------------------------------
Angle1 Angle2 : -90.00 deg 0.00 deg
Wood depth : 0 (No woods.)
No of house rows : 0
Surface : 2 (Reflective ground
surface)
Receiver source distance : 140.00 m
Receiver height : 2.00 m
Topography : 1 (Flat/gentle slope; no
barrier)
Reference angle : 90.00
Result summary
--------------
! source ! Road ! Total
! height ! Leq ! Leq
! (m) ! (dBA) ! (dBA)
--------------------+---------+---------+---------
1.GOULBOURN ! 1.50 ! 64.09 ! 64.09
2.TERRY FOX ! 1.50 ! 60.97 ! 60.97
--------------------+---------+---------+---------
Total 65.81 dBA
TOTAL Leq FROM ALL SOURCES: 65.81
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HUGH WILLIAMSON ASSOCIATES INC.
STAMSON 5.0 SUMMARY REPORT Date: 18-12-2016
16:35:19
MINISTRY OF ENVIRONMENT AND ENERGY / NOISE ASSESSMENT
Filename: por2d.te Time Period: 16 hours
Description: POR2 DAY PLANE OF WINDOW
Road data, segment # 1: GOULBOURN
---------------------------------
Car traffic volume : 9715 veh/TimePeriod
Medium truck volume : 773 veh/TimePeriod
Heavy truck volume : 552 veh/TimePeriod
Posted speed limit : 50 km/h
Road gradient : 0 %
Road pavement : 1 (Typical asphalt or concrete)
Data for Segment # 1: GOULBOURN
-------------------------------
Angle1 Angle2 : -90.00 deg 0.00 deg
Wood depth : 0 (No woods.)
No of house rows : 0
Surface : 2 (Reflective ground
surface)
Receiver source distance : 58.00 m
Receiver height : 2.00 m
Topography : 1 (Flat/gentle slope; no
barrier)
Reference angle : 90.00
Road data, segment # 2: TERRY FOX
---------------------------------
Car traffic volume : 28336 veh/TimePeriod
Medium truck volume : 2254 veh/TimePeriod
Heavy truck volume : 1610 veh/TimePeriod
Posted speed limit : 60 km/h
Road gradient : 0 %
Road pavement : 1 (Typical asphalt or concrete)
Data for Segment # 2: TERRY FOX
-------------------------------
Angle1 Angle2 : -90.00 deg 90.00 deg
Wood depth : 0 (No woods.)
No of house rows : 0
Surface : 2 (Reflective ground
surface)
Receiver source distance : 135.00 m
Receiver height : 2.00 m
Topography : 1 (Flat/gentle slope; no
barrier)
Reference angle : 180.00
Result summary
--------------
! source ! Road ! Total
! height ! Leq ! Leq
! (m) ! (dBA) ! (dBA)
--------------------+---------+---------+---------
1.GOULBOURN ! 1.50 ! 58.63 ! 58.63
2.TERRY FOX ! 1.50 ! 64.13 ! 64.13
--------------------+---------+---------+---------
Total 65.21 dBA
TOTAL Leq FROM ALL SOURCES: 65.21
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HUGH WILLIAMSON ASSOCIATES INC.
STAMSON 5.0 SUMMARY REPORT Date: 18-12-2016
16:38:05
MINISTRY OF ENVIRONMENT AND ENERGY / NOISE ASSESSMENT
Filename: por3d.te Time Period: 16 hours
Description: POR3 DAY PLANE OF WINDOW
Road data, segment # 1: GOULBOURN
---------------------------------
Car traffic volume : 9715 veh/TimePeriod
Medium truck volume : 773 veh/TimePeriod
Heavy truck volume : 552 veh/TimePeriod
Posted speed limit : 50 km/h
Road gradient : 0 %
Road pavement : 1 (Typical asphalt or concrete)
Data for Segment # 1: GOULBOURN
-------------------------------
Angle1 Angle2 : -90.00 deg 90.00 deg
Wood depth : 0 (No woods.)
No of house rows : 0
Surface : 2 (Reflective ground
surface)
Receiver source distance : 28.00 m
Receiver height : 2.00 m
Topography : 1 (Flat/gentle slope; no
barrier)
Reference angle : 180.00
Road data, segment # 2: TERRY FOX
---------------------------------
Car traffic volume : 28336 veh/TimePeriod
Medium truck volume : 2254 veh/TimePeriod
Heavy truck volume : 1610 veh/TimePeriod
Posted speed limit : 60 km/h
Road gradient : 0 %
Road pavement : 1 (Typical asphalt or concrete)
Data for Segment # 2: TERRY FOX
-------------------------------
Angle1 Angle2 : -90.00 deg 0.00 deg
Wood depth : 0 (No woods.)
No of house rows : 0
Surface : 2 (Reflective ground
surface)
Receiver source distance : 190.00 m
Receiver height : 2.00 m
Topography : 1 (Flat/gentle slope; no
barrier)
Reference angle : 90.00
Result summary
--------------
! source ! Road ! Total
! height ! Leq ! Leq
! (m) ! (dBA) ! (dBA)
--------------------+---------+---------+---------
1.GOULBOURN ! 1.50 ! 64.80 ! 64.80
2.TERRY FOX ! 1.50 ! 59.64 ! 59.64
--------------------+---------+---------+---------
Total 65.96 dBA
TOTAL Leq FROM ALL SOURCES: 65.96
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HUGH WILLIAMSON ASSOCIATES INC.
Noise Sound Insulation Scenario Calculation Results
Project: POR 1 Day Wall Facing Terry Fox
ProjectID:
Date:12/19/2016
Outdoor level: NEF 34 or Leq24 66 or Ldn 67 dBA
Source Spectrum details:
100% ISO 717 Road Traffic
Corrections:
Receiving room:
Floor Area: 124.00 ft²
Absorbtion: 100% of floor area
Construction Description:
Element 1: G13_WS140(406)_GFB152_OSB11_AIR16_BRI89
Construction Type: 2by6 Wall
Area: 48.00 m²
Test ID: TLA-99-098a
Test Date: 3/3/1999
1 of 13mm gypsum board, 140 mm wood studs on 406 mm centres with glass fibr
e cavity insulation, 11 mm OSB, 16 mm airspace, 89 mm brick.
A-Weighted Sound Level vs. Frequency - Spectrum Values:
Frequency(Hz) A-Wtd Sound Level(dBA)
------------------------------------
50 3.7
63 7.6
80 10.0
100 15.7
125 12.7
160 5.2
200 2.1
250 6.2
315 5.8
400 -1.7
500 -5.0
630 -6.3
800 -8.7
1000 -10.8
1250 -14.1
1600 -17.7
2000 -20.6
2500 -21.5
3150 -25.4
4000 -31.7
5000 -39.1
Transmission Loss vs. Frequency - Spectrum Values:
Frequency(Hz) Transmission Loss(dB)
------------------------------------
50 33.0
63 31.1
80 30.6
100 25.9
125 28.9
160 38.5
200 43.5
250 40.4
315 41.9
400 50.4
500 54.7
630 57.0
800 61.4
1000 64.5
1250 66.8
1600 69.3
2000 71.2
2500 70.1
3150 71.9
4000 77.1
5000 82.3
Source Sound Level vs. Frequency - Spectrum Values:
Frequency(Hz) Source Sound Level(dB)
------------------------------------
50 71.0
63 69.0
80 67.3
100 64.9
125 61.9
160 61.2
200 60.7
250 59.4
315 58.4
400 57.6
500 57.0
630 56.7
800 57.6
1000 57.8
1250 56.2
1600 54.8
2000 53.6
2500 51.5
3150 49.6
4000 48.8
5000 47.3
Single Number Ratings
Outdoor Sound Level: 66 dBA
Indoor Sound Level: 19 dBA
A-wtd Level Reduction: 47 dB
A-wtd Reduction re Standard Source: 47 dB
OITC Rating: 40 dB
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HUGH WILLIAMSON ASSOCIATES INC.
Noise Sound Insulation Scenario Calculation Results
Project: POR 1 Day Wall with Window Facing Goulbourn Forced Road
ProjectID:
Date:12/19/2016
Outdoor level: NEF 34 or Leq24 66 or Ldn 67 dBA
Source Spectrum details:
100% ISO 717 Road Traffic
Corrections:
Receiving room:
Floor Area: 124.00 ft²
Absorbtion: 100% of floor area
Construction Description:
Element 1: G13_WS140(406)_GFB152_OSB11_AIR16_BRI89
Construction Type: 2by6 Wall
Area: 18.50 m²
Test ID: TLA-99-098a
Test Date: 3/3/1999
1 of 13mm gypsum board, 140 mm wood studs on 406 mm centres with glass fibr
e cavity insulation, 11 mm OSB, 16 mm airspace, 89 mm brick.
Element 2: GL3_AIR13_GL3
Construction Type: Window
Area: 7.10 m²
Test ID: TLA-99-177a
Test Date: 5/31/1999
Aluminum casement window (seals not taped).
A-Weighted Sound Level vs. Frequency - Spectrum Values:
Frequency(Hz) A-Wtd Sound Level(dBA)
------------------------------------
50 9.4
63 11.4
80 11.7
100 15.2
125 14.8
160 19.4
200 19.2
250 20.1
315 16.8
400 19.8
500 16.5
630 16.9
800 18.2
1000 19.8
1250 16.5
1600 13.5
2000 9.2
2500 5.7
3150 5.0
4000 3.9
5000 -1.4
Transmission Loss vs. Frequency - Spectrum Values:
Frequency(Hz) Transmission Loss(dB)
------------------------------------
50 24.5
63 24.5
80 26.2
100 23.7
125 24.1
160 21.6
200 23.7
250 23.8
315 28.1
400 26.1
500 30.4
630 31.0
800 31.7
1000 31.2
1250 33.4
1600 35.4
2000 38.7
2500 40.2
3150 38.8
4000 38.8
5000 41.9
Source Sound Level vs. Frequency - Spectrum Values:
Frequency(Hz) Source Sound Level(dB)
------------------------------------
50 71.0
63 69.0
80 67.3
100 64.9
125 61.9
160 61.2
200 60.7
250 59.4
315 58.4
400 57.6
500 57.0
630 56.7
800 57.6
1000 57.8
1250 56.2
1600 54.8
2000 53.6
2500 51.5
3150 49.6
4000 48.8
5000 47.3
Single Number Ratings
Outdoor Sound Level: 66 dBA
Indoor Sound Level: 29 dBA
A-wtd Level Reduction: 37 dB
A-wtd Reduction re Standard Source: 36 dB
OITC Rating: 29 dB
Environmental noise impact assessment
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HUGH WILLIAMSON ASSOCIATES INC.
Appendix 3
Stationary Noise Source Impacts
Contents:
A3.1 Plans and Figures Figure A3.1.1: Area Plan Showing Receptor Locations
Figure A3.1.2: Site Details & Equipment Locations
Figure A3.1.3: Scenario 1: Worst Case, All equipment in operation,
Day and Evening only (19:00 – 23:00);
Noise Contours: (Noise levels at 4.5 m)
Figure A3.1.4: Scenario 2: Worst Case, All equipment in operation,
Night operation (23:00 – 07:00);
Noise Contours: (Noise levels at 4.5 m)
A3.2 Acoustic Modeling Detail Table A3.2.1 Calculation Configuration
Table A3.2.2 Point of Reception Location Table
Table A3.2.3 Point Sources
Table A3.2.4 Noise Source Library
Table A3.2.5 Point of Reception Impacts by Source for Scenario 1
Table A3.2.6 Point of Reception Impacts by Source for Scenario 2
Table A3.2.7 Sample Calculations
A3.3 Stationary Noise Sources Criteria and Impact Assessment Table A3.3.1: Exclusion Limit Values for One-Hour Equivalent Sound Level
(Leq, dBA) at Outdoor Points of Reception2
Table A3.3.2: Exclusion Limit Values for One-Hour Equivalent Sound Level
(Leq, dBA) at Plane of Window of Noise Sensitive Spaces
Table A3.3.3: Points of Reception
Table A3.3.4:Acoustic Assessment Summary Table - Impacts from Stationary
Noise Sources
Table A3.3.5: Noise Mitigation, Recommended Maximum Outdoor Sound
Power for critical equipment
Environmental noise impact assessment
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HUGH WILLIAMSON ASSOCIATES INC.
Appendix A3.1
Plans and Figures
Contents
Figure A3.1.1: Area Plan Showing Receptor Locations
Figure A3.1.2: Site Details & Equipment Locations
Figure A3.1.3: Scenario 1: Worst Case, All equipment in operation,
Day and Evening only (19:00 – 23:00); Noise Contours:
(Noise levels at 4.5 m)
Figure A3.1.4: Scenario 2: Worst Case, All equipment in operation,
Night operation (23:00 – 07:00); Noise Contours:
(Noise levels at 4.5 m)
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HUGH WILLIAMSON ASSOCIATES INC.
Figure A3.1.1: Area Plan Showing Site Boundary and Points of Reception
North
Goulbounr Forced Road (Future location)
Location of proposed Kanata North Catholic Elementary
School (site boundary)
Goulbourn Forced Road
Terry Fox Drive Kanata Highlands Public
School
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HUGH WILLIAMSON ASSOCIATES INC.
Figure A3.1.2: Site Plan showing Source Locations and Points of Reception
RTU_1
RTU_2
RTU_3RTU_4
RTU_5
RTU_6
RTU_7
RTU_8RTU_9
F_1 - 1125 cfm
F_3 - 1175 cfm
F_2 - 1075 cfm
18426150
18426150
18426200
18426200
18426250
18426250
18426300
18426300
18426350
18426350
18426400
18426400
50
20
70
0
50
20
70
0
50
20
75
0
50
20
75
0
50
20
80
0
50
20
80
0
50
20
85
0
50
20
85
0
50
20
90
0
50
20
90
0
Goulbounr Forced Road (Future location)
Terry Fox Drive
POR 1
POR 2
POR 3
POR 4
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HUGH WILLIAMSON ASSOCIATES INC.
Figure A3.1.3: Scenario 1: Worst Case, All equipment in operation, Day and Evening (19:00 – 23:00); Noise Contours: (Noise levels at 4.5 m) with Mitigation
POR 1
POW: 47 dBA
OLA: 44 dBA
POR 2
POW: 41 dBA
OLA: 41 dBA
POR 3
POW: 45 dBA
OLA: 43 dBA
POR 4
POW: 42 dBA
OLA: 40 dBA
18425400
18425400
18425600
18425600
18425800
18425800
18426000
18426000
18426200
18426200
18426400
18426400
18426600
18426600
18426800
18426800
18427000
18427000
50
20
40
0
50
20
40
0
50
20
60
0
50
20
60
0
50
20
80
0
50
20
80
0
50
21
00
0
50
21
00
0
50
21
20
0
50
21
20
0
50
21
40
0
50
21
40
0
> 35.0 dB
> 40.0 dB
> 45.0 dB
> 50.0 dB
> 55.0 dB
> 60.0 dB
> 65.0 dB
> 70.0 dB
> 75.0 dB
> 80.0 dB
> 85.0 dB
North
Goulbounr Forced Road (Future location)
Location of proposed Kanata North Catholic Elementary
School (site boundary)
Goulbourn Forced Road
Terry Fox Drive
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HUGH WILLIAMSON ASSOCIATES INC.
Figure A3.1.4: Scenario 2: Worst Case, All equipment in operation, Night operation (23:00 – 07:00); Noise Contours: (Noise levels at 4.5 m) with Mitigation
POR 1
POW: 45 dBA
OLA: 42 dBA
POR 2
POW: 38 dBA
OLA: 38 dBA
POR 3
POW: 42 dBA
OLA: 41 dBA
POR 4
POW: 39 dBA
OLA: 37 dBA
18425400
18425400
18425600
18425600
18425800
18425800
18426000
18426000
18426200
18426200
18426400
18426400
18426600
18426600
18426800
18426800
18427000
18427000
50
20
40
0
50
20
40
0
50
20
60
0
50
20
60
0
50
20
80
0
50
20
80
0
50
21
00
0
50
21
00
0
50
21
20
0
50
21
20
0
50
21
40
0
50
21
40
0
> 35.0 dB
> 40.0 dB
> 45.0 dB
> 50.0 dB
> 55.0 dB
> 60.0 dB
> 65.0 dB
> 70.0 dB
> 75.0 dB
> 80.0 dB
> 85.0 dB
North
Goulbounr Forced Road (Future location)
Location of proposed Kanata North Catholic Elementary
School (site boundary)
Goulbourn Forced Road
Terry Fox Drive
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HUGH WILLIAMSON ASSOCIATES INC.
Appendix A3.2
Acoustic Modelling Details
Modeling Notes:
1. Acoustic model developed uses Cadna-A software, Version 4.6.155.
2. Sound propagation is modeled according to ISO 9613-2: 1996(E).
3. The whole of the site area is modeled as reflective, a conservative assumption.
4. MoE favoured conservative modelling assumptions are used, that is, ‘no subtraction of negative ground attenuation’ and ‘no negative path differences’.
Contents: Table A3.2.1 Calculation Configuration Table A3.2.2 Point of Reception Location Table Table A3.2.3 Point Sources Table A3.2.4 Noise Source Library Table A3.2.5 Scenario 1 - Point of Reception Impacts by Source,
Day (07:00 – 19:00) and Evening (19:00 – 23:00) Table A3.2.6 Scenario 2 - Point of Reception Impacts by Source,
Night (23:00 – 07:00) Table A3.2.7 Sample Calculations
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HUGH WILLIAMSON ASSOCIATES INC.
Table A3.2.1 Calculation Configuration
Configuration
Parameter Value
General
Country Germany (TA Lärm)
Max. Error (dB) 0.00
Max. Search Radius (m) 2000.00
Min. Dist Src to Rcvr 0.00
Partition
Raster Factor 0.50
Max. Length of Section (m) 1000.00
Min. Length of Section (m) 1.00
Min. Length of Section (%) 0.00
Proj. Line Sources On
Proj. Area Sources On
Ref. Time
Reference Time Day (min) 960.00
Reference Time Night (min) 480.00
Daytime Penalty (dB) 0.00
Recr. Time Penalty (dB) 6.00
Night-time Penalty (dB) 10.00
DTM
Standard Height (m) 0.00
Model of Terrain Triangulation
Reflection
max. Order of Reflection 3
Search Radius Src 100.00
Search Radius Rcvr 100.00
Max. Distance Source - Rcvr 1000.00 1000.00
Min. Distance Rvcr - Reflector 1.00 1.00
Min. Distance Source - Reflector 0.10
Industrial (ISO 9613)
Lateral Diffraction some Obj
Obst. within Area Src do not shield On
Screening Excl. Ground Att. over Barrier
Dz with limit (20/25)
Barrier Coefficients C1,2,3 3.0 20.0 0.0
Temperature (°C) 10
rel. Humidity (%) 70
Ground Absorption G 0.00
Wind Speed for Dir. (m/s) 3.0
Roads (RLS-90)
Strictly acc. to RLS-90
Railways (Schall 03 (1990))
Strictly acc. to Schall 03 / Schall-Transrapid
Aircraft (???)
Strictly acc. to AzB
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HUGH WILLIAMSON ASSOCIATES INC.
Table A3.2.2 Point of Reception Location Table
Name ID Height Coordinates
X Y Z
(m) (m) (m) (m)
POR_1_POW POR_1_POW 4.5 r 18426343 5020839 4.5
POR_1_OLA POR_1_OLA 1.5 r 18426335 5020833 1.5
POR_2_POW POR_2_POW 4.5 r 18426344 5020691 4.5
POR_2_OLA POR_2_OLA 1.5 r 18426336 5020701 1.5
POR_3_POW POR_3_POW 4.5 r 18426210 5020717 4.5
POR_3_OLA POR_3_OLA 1.5 r 18426219 5020725 1.5
POR_4_POW POR_4_POW 4.5 r 18426188 5020901 4.5
POR_4_OLA POR_4_OLA 1.5 r 18426194 5020895 1.5
*Height measured from ground.
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HUGH WILLIAMSON ASSOCIATES INC.
Table A3.2.3 Point Sources
Name ID Result. PWL
Lw / Li
Operating Time
Height*
Coordinates
Day
Evening Night Type Value Day Evening Night
X Y Z
(dBA) (dBA)
(dBA)
(min/hour)
(min/hour)
(min/hour) (m)
(m) (m) (m)
RTU_1 RTU_1 82.8 82.8 82.8 Lw AAON_RN_6_10_Ton** 720 90 270 1.1 g
18426289
5020793 6.1
RTU_2 RTU_2 84.8 84.8 84.8 Lw AAON_RN_09_20_Ton** 720 90 270 1.25 g
18426295
5020788
6.25
RTU_3 RTU_3 84.8 84.8 84.8 Lw AAON_RN_09_20_Ton** 720 90 270 1.25 g
18426310
5020765
6.25
RTU_4 RTU_4 84.8 84.8 84.8 Lw AAON_RN_09_20_Ton** 720 90 270 1.25 g
18426274
5020771
6.25
RTU_5 RTU_5 82.8 82.8 82.8 Lw AAON_RN_6_10_Ton** 720 90 270 1.1 g
18426272
5020777 6.1
RTU_6 RTU_6 84.8 84.8 84.8 Lw AAON_RN_09_20_Ton** 720 90 270 1.25 g
18426270
5020806
6.25
RTU_7 RTU_7 82.8 82.8 82.8 Lw AAON_RN_6_10_Ton** 720 90 270 1.1 g
18426259
5020819 6.1
RTU_8 RTU_8 84.8 84.8 84.8 Lw AAON_RN_09_20_Ton** 720 90 270 1.25 g
18426285
5020789
6.25
RTU_9 RTU_9 84.8 84.8 84.8 Lw AAON_RN_09_20_Ton** 720 90 270 1.25 g
18426286
5020781
6.25
F_1 - 1125 cfm F_1 74.6 74.6 74.6 Lw F_1 720 90 270 0.1 g
18426280
5020779 5.1
F_2 - 1075 cfm F_2 73.9 73.9 73.9 Lw F_2 720 90 270 0.1 g
18426300
5020758 5.1
F_3 - 1175 cfm F_3 75.6 75.6 75.6 Lw F_3 720 90 270 0.1 g
18426281
5020797 5.1
*Height measured from finished roof level. **Mitigated to comply with maximum outdoor sound power.
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HUGH WILLIAMSON ASSOCIATES INC.
Table A3.2.4 Noise Source Library
ID Type Oktave Spectrum (dB)
Source
Correction 31.5 63 125 250 500 1000 2000 4000 8000 A lin
Mitigated_AAON_RN_6_10_Ton* Lw -5 91 86 82 81 77 73 70 69 82.8 93.1 Mitigated_AAON_RN_6_10_Ton
Mitigated_AAON_RN_09_20_Ton* Lw -6 93 88 84 83 79 75 72 71 84.8 95.1 Mitigated_AAON_RN_09_20_Ton
Unmitigated_AAON_RN_6_10_Ton Lw 96 91 87 86 82 78 75 74 87.8 98.1 Unmit_AAON_RN_6_10_Ton
Unmitigated_AAON_RN_09_20_Ton Lw 99 94 90 89 85 81 78 77 90.8 101.1 Unmit_AAON_RN_09_20_Ton
F_1 Lw 75 78 78 71 67 66 62 55 74.6 82.6 F_1
F_2 Lw 74 77 78 70 66 65 60 53 73.9 82 F_2
F_3 Lw 75 78 79 72 68 67 63 56 75.6 83.1 F_3
*Equipment adjusted down to achieve compliance. Refer to Table A3.3.5 for maximum outdoor sound power for critical equipment.
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Table A3.2.5 Scenario 1 - Point of Reception Impacts by Source, Day and Evening (07:00 – 23:00)
Source Partial Level Scenario 1 Day
ID POR_1_POW POR_1_OLA POR_2_POW POR_2_OLA POR_3_POW POR_3_OLA POR_4_POW POR_4_OLA
RTU_1 37 34 28 22 33 29 31 26
RTU_2 39 36 35 32 35 31 32 28
RTU_3 38 39 38 40 32 25 31 26
RTU_4 37 32 24 22 38 39 32 29
RTU_5 35 30 23 21 36 32 31 26
RTU_6 38 35 25 23 36 34 34 35
RTU_7 36 32 23 20 33 34 33 34
RTU_8 39 35 25 23 36 32 33 28
RTU_9 38 34 22 22 36 33 32 28
F_1 23 22 10 10 22 22 17 18
F_2 22 15 27 24 21 21 4 4
F_3 25 25 14 13 22 22 19 20
Total 47 44 41 41 45 43 42 40
Table A3.2.6 Scenario 2: Point of Reception Impacts by Source, Night (23:00 – 07:00)
Source Partial Level Scenario 2 Night ID POR_1_POW POR_1_OLA POR_2_POW POR_2_OLA POR_3_POW POR_3_OLA POR_4_POW POR_4_OLA
RTU_1 35 31 26 20 31 27 28 24
RTU_2 37 34 33 29 33 29 30 25
RTU_3 36 37 36 37 29 23 28 24
RTU_4 34 29 22 20 35 37 30 26
RTU_5 32 28 20 18 33 30 28 24
RTU_6 36 32 23 20 33 32 32 32
RTU_7 33 29 20 17 31 32 31 32
RTU_8 36 33 23 21 33 30 30 26
RTU_9 36 32 20 19 34 30 30 25
F_1 20 20 8 8 19 20 15 15
F_2 19 13 25 21 18 19 1 1
F_3 22 23 11 10 19 19 17 17
Total 47 44 41 41 45 43 42 40
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Table A3.2.7 Sample Calculations
Receiver Name: POR_1_OLA ID: POR_1_OLA X: 18426334.68 Y: 5020832.85 Z: 1.50
Point Source, ISO 9613, Name: ''RTU_2'', ID: ''RTU_2''
Nr. X Y Z Refl. DEN Freq. Lw l/a Optime K0 Dc Adiv Aatm Agr Afol Ahous Abar Cmet RL Lr
(m) (m) (m) (Hz) dB(A) dB dB (dB) (dB) (dB) (dB) (dB) (dB) (dB) (dB) (dB) (dB) dB(A)
6 18426294.54 5020788.07 6.25 0 D 32 -45.4 0.0 0.0 0.0 0.0 46.6 0.0 -3.0 0.0 0.0 4.8 0.0 0.0 -93.8
6 18426294.54 5020788.07 6.25 0 D 63 66.8 0.0 0.0 0.0 0.0 46.6 0.0 -3.0 0.0 0.0 4.8 0.0 0.0 18.4
6 18426294.54 5020788.07 6.25 0 D 125 71.9 0.0 0.0 0.0 0.0 46.6 0.0 -3.0 0.0 0.0 4.8 0.0 0.0 23.5
6 18426294.54 5020788.07 6.25 0 D 250 75.4 0.0 0.0 0.0 0.0 46.6 0.1 -3.0 0.0 0.0 4.8 0.0 0.0 27.0
6 18426294.54 5020788.07 6.25 0 D 500 79.8 0.0 0.0 0.0 0.0 46.6 0.1 -3.0 0.0 0.0 4.8 0.0 0.0 31.3
6 18426294.54 5020788.07 6.25 0 D 1000 79.0 0.0 0.0 0.0 0.0 46.6 0.2 -3.0 0.0 0.0 4.8 0.0 0.0 30.4
6 18426294.54 5020788.07 6.25 0 D 2000 76.2 0.0 0.0 0.0 0.0 46.6 0.6 -3.0 0.0 0.0 4.8 0.0 0.0 27.2
6 18426294.54 5020788.07 6.25 0 D 4000 73.0 0.0 0.0 0.0 0.0 46.6 2.0 -3.0 0.0 0.0 4.8 0.0 0.0 22.6
6 18426294.54 5020788.07 6.25 0 D 8000 69.9 0.0 0.0 0.0 0.0 46.6 7.1 -3.0 0.0 0.0 4.8 0.0 0.0 14.5
6 18426294.54 5020788.07 6.25 0 N 32 -45.4 0.0 -2.5 0.0 0.0 46.6 0.0 -3.0 0.0 0.0 4.8 0.0 0.0 -96.3
6 18426294.54 5020788.07 6.25 0 N 63 66.8 0.0 -2.5 0.0 0.0 46.6 0.0 -3.0 0.0 0.0 4.8 0.0 0.0 15.9
6 18426294.54 5020788.07 6.25 0 N 125 71.9 0.0 -2.5 0.0 0.0 46.6 0.0 -3.0 0.0 0.0 4.8 0.0 0.0 21.0
6 18426294.54 5020788.07 6.25 0 N 250 75.4 0.0 -2.5 0.0 0.0 46.6 0.1 -3.0 0.0 0.0 4.8 0.0 0.0 24.5
6 18426294.54 5020788.07 6.25 0 N 500 79.8 0.0 -2.5 0.0 0.0 46.6 0.1 -3.0 0.0 0.0 4.8 0.0 0.0 28.8
6 18426294.54 5020788.07 6.25 0 N 1000 79.0 0.0 -2.5 0.0 0.0 46.6 0.2 -3.0 0.0 0.0 4.8 0.0 0.0 27.9
6 18426294.54 5020788.07 6.25 0 N 2000 76.2 0.0 -2.5 0.0 0.0 46.6 0.6 -3.0 0.0 0.0 4.8 0.0 0.0 24.7
6 18426294.54 5020788.07 6.25 0 N 4000 73.0 0.0 -2.5 0.0 0.0 46.6 2.0 -3.0 0.0 0.0 4.8 0.0 0.0 20.1
6 18426294.54 5020788.07 6.25 0 N 8000 69.9 0.0 -2.5 0.0 0.0 46.6 7.1 -3.0 0.0 0.0 4.8 0.0 0.0 12.0
6 18426294.54 5020788.07 6.25 0 E 32 -45.4 0.0 -4.3 0.0 0.0 46.6 0.0 -3.0 0.0 0.0 4.8 0.0 0.0 -98.0
6 18426294.54 5020788.07 6.25 0 E 63 66.8 0.0 -4.3 0.0 0.0 46.6 0.0 -3.0 0.0 0.0 4.8 0.0 0.0 14.2
6 18426294.54 5020788.07 6.25 0 E 125 71.9 0.0 -4.3 0.0 0.0 46.6 0.0 -3.0 0.0 0.0 4.8 0.0 0.0 19.2
6 18426294.54 5020788.07 6.25 0 E 250 75.4 0.0 -4.3 0.0 0.0 46.6 0.1 -3.0 0.0 0.0 4.8 0.0 0.0 22.7
6 18426294.54 5020788.07 6.25 0 E 500 79.8 0.0 -4.3 0.0 0.0 46.6 0.1 -3.0 0.0 0.0 4.8 0.0 0.0 27.0
6 18426294.54 5020788.07 6.25 0 E 1000 79.0 0.0 -4.3 0.0 0.0 46.6 0.2 -3.0 0.0 0.0 4.8 0.0 0.0 26.1
6 18426294.54 5020788.07 6.25 0 E 2000 76.2 0.0 -4.3 0.0 0.0 46.6 0.6 -3.0 0.0 0.0 4.8 0.0 0.0 23.0
6 18426294.54 5020788.07 6.25 0 E 4000 73.0 0.0 -4.3 0.0 0.0 46.6 2.0 -3.0 0.0 0.0 4.8 0.0 0.0 18.4
6 18426294.54 5020788.07 6.25 0 E 8000 69.9 0.0 -4.3 0.0 0.0 46.6 7.1 -3.0 0.0 0.0 4.8 0.0 0.0 10.2
Point Source, ISO 9613, Name: ''RTU_8'', ID: ''RTU_8''
Nr. X Y Z Refl. DEN Freq. Lw l/a Optime K0 Dc Adiv Aatm Agr Afol Ahous Abar Cmet RL Lr
(m) (m) (m) (Hz) dB(A) dB dB (dB) (dB) (dB) (dB) (dB) (dB) (dB) (dB) (dB) (dB) dB(A)
9 18426284.75 5020789.20 6.25 0 D 32 -45.4 0.0 0.0 0.0 0.0 47.5 0.0 -3.0 0.0 0.0 4.8 0.0 0.0 -94.6
9 18426284.75 5020789.20 6.25 0 D 63 66.8 0.0 0.0 0.0 0.0 47.5 0.0 -3.0 0.0 0.0 4.8 0.0 0.0 17.6
9 18426284.75 5020789.20 6.25 0 D 125 71.9 0.0 0.0 0.0 0.0 47.5 0.0 -3.0 0.0 0.0 4.8 0.0 0.0 22.6
9 18426284.75 5020789.20 6.25 0 D 250 75.4 0.0 0.0 0.0 0.0 47.5 0.1 -3.0 0.0 0.0 4.8 0.0 0.0 26.1
9 18426284.75 5020789.20 6.25 0 D 500 79.8 0.0 0.0 0.0 0.0 47.5 0.1 -3.0 0.0 0.0 4.8 0.0 0.0 30.4
9 18426284.75 5020789.20 6.25 0 D 1000 79.0 0.0 0.0 0.0 0.0 47.5 0.2 -3.0 0.0 0.0 4.9 0.0 0.0 29.4
9 18426284.75 5020789.20 6.25 0 D 2000 76.2 0.0 0.0 0.0 0.0 47.5 0.6 -3.0 0.0 0.0 5.0 0.0 0.0 26.1
9 18426284.75 5020789.20 6.25 0 D 4000 73.0 0.0 0.0 0.0 0.0 47.5 2.2 -3.0 0.0 0.0 5.3 0.0 0.0 21.1
9 18426284.75 5020789.20 6.25 0 D 8000 69.9 0.0 0.0 0.0 0.0 47.5 7.8 -3.0 0.0 0.0 5.7 0.0 0.0 12.0
9 18426284.75 5020789.20 6.25 0 N 32 -45.4 0.0 -2.5 0.0 0.0 47.5 0.0 -3.0 0.0 0.0 4.8 0.0 0.0 -97.1
9 18426284.75 5020789.20 6.25 0 N 63 66.8 0.0 -2.5 0.0 0.0 47.5 0.0 -3.0 0.0 0.0 4.8 0.0 0.0 15.1
9 18426284.75 5020789.20 6.25 0 N 125 71.9 0.0 -2.5 0.0 0.0 47.5 0.0 -3.0 0.0 0.0 4.8 0.0 0.0 20.1
9 18426284.75 5020789.20 6.25 0 N 250 75.4 0.0 -2.5 0.0 0.0 47.5 0.1 -3.0 0.0 0.0 4.8 0.0 0.0 23.6
9 18426284.75 5020789.20 6.25 0 N 500 79.8 0.0 -2.5 0.0 0.0 47.5 0.1 -3.0 0.0 0.0 4.8 0.0 0.0 27.9
9 18426284.75 5020789.20 6.25 0 N 1000 79.0 0.0 -2.5 0.0 0.0 47.5 0.2 -3.0 0.0 0.0 4.9 0.0 0.0 26.9
9 18426284.75 5020789.20 6.25 0 N 2000 76.2 0.0 -2.5 0.0 0.0 47.5 0.6 -3.0 0.0 0.0 5.0 0.0 0.0 23.6
9 18426284.75 5020789.20 6.25 0 N 4000 73.0 0.0 -2.5 0.0 0.0 47.5 2.2 -3.0 0.0 0.0 5.3 0.0 0.0 18.6
9 18426284.75 5020789.20 6.25 0 N 8000 69.9 0.0 -2.5 0.0 0.0 47.5 7.8 -3.0 0.0 0.0 5.7 0.0 0.0 9.5
9 18426284.75 5020789.20 6.25 0 E 32 -45.4 0.0 -4.3 0.0 0.0 47.5 0.0 -3.0 0.0 0.0 4.8 0.0 0.0 -98.9
Environmental noise impact assessment
for the proposed Kanata North Catholic
Elementary School, City of Ottawa
Ottawa Catholic School Board
20th December, 2016
p. 52
HUGH WILLIAMSON ASSOCIATES INC.
Appendix 3.3
Stationary Noise Sources Criteria and Impact Assessment
Contents:
Table A3.3.1: Exclusion Limit Values for One-Hour Equivalent Sound Level (Leq, dBA) at Outdoor Points of Reception2
Table A3.3.2: Exclusion Limit Values for One-Hour Equivalent Sound Level
(Leq, dBA) at Plane of Window of Noise Sensitive Spaces Table A3.3.3: Points of Reception Table A3.3.4: Acoustic Assessment Summary Table - Impacts from Stationary Noise
Sources Table A3.3.5: Noise Mitigation, Recommended Maximum Outdoor Sound
Power Octave Band Levels of equipment
Environmental noise impact assessment
for the proposed Kanata North Catholic
Elementary School, City of Ottawa
Ottawa Catholic School Board
20th December, 2016
p. 53
HUGH WILLIAMSON ASSOCIATES INC.
Table A3.3.1: Exclusion Limit Values for One-Hour Equivalent Sound Level (Leq, dBA) at Outdoor Points of Reception
2
Time of Day Class 1 Area (POR 5 to 7)
Class 2 Area (POR 1 to 4)
Class 3 Area Class 4 Area
07:00 – 19:00 50 50 45 55
19:00 – 23:00 50 45 40 55
Table A3.3.2: Exclusion Limit Values for One-Hour Equivalent Sound Level (Leq, dBA) at Plane of Window of Noise Sensitive Spaces
Time of Day Class 1 Area (POR 5 to 7)
Class 2 Area (POR 1 to 4)
Class 3 Area Class 4 Area
07:00 – 19:00 50 50 45 60
19:00 – 23:00 50 50 40 60
23:00 – 07:00 45 45 40 55
Notes: 1. Sound level limits are based on 1-hour equivalent sound levels.
2. Sound level limits for the testing and maintenance of emergency equipment are 5 dB greater than the sound level limits otherwise applicable to stationary sources. As such at all receptors the sound level limit applicable to the testing and maintenance of the emergency generator is 55 dBA. Note: Testing is only to be carried out during the daytime period (07:00 to 19:00).
Environmental noise impact assessment
for the proposed Kanata North Catholic
Elementary School, City of Ottawa
Ottawa Catholic School Board
20th December, 2016
p. 54
HUGH WILLIAMSON ASSOCIATES INC.
Table A3.3.3: Points of Reception
Point of
Reception
Description
POR 1 - POW (Plane of Window)
Vacant land zoned for potential noise sensitive use to the
north of the subject property (assessed as two storeys)
POR 1 - OLA (Outdoor Living Area)
Vacant land zoned for potential noise sensitive use to the
north of the subject property (assessed as two storeys)
POR 2 - POW (Plane of Window)
Vacant land zoned for potential noise sensitive use to the
east of the subject property (assessed as two storeys)
POR 2 - OLA (Outdoor Living Area)
Vacant land zoned for potential noise sensitive use to the
east of the subject property (assessed as two storeys)
POR 3 - POW (Plane of Window)
Vacant land zoned for potential noise sensitive use to the
south of the subject property (assessed as two storeys)
POR 3 - OLA (Outdoor Living Area)
Vacant land zoned for potential noise sensitive use to the
south of the subject property (assessed as two storeys)
POR 4 - POW (Plane of Window)
Vacant land zoned for potential noise sensitive use to the
west of the subject property (assessed as two storeys)
POR 4 - OLA (Outdoor Living Area)
Vacant land zoned for potential noise sensitive use to the
west of the subject property (assessed as two storeys)
For assessment purposes, Plane of window (POW) points of reception have been taken as
upper floor windows 4.5 m above grade for two residences in the surrounding environment.
Outdoor Living Areas (OLA) have been assessed at 1.5 m above finished ground level, in
acoustic calculations.
Environmental noise impact assessment
for the proposed Kanata North Catholic
Elementary School, City of Ottawa
Ottawa Catholic School Board
20th December, 2016
p. 55
HUGH WILLIAMSON ASSOCIATES INC.
Table A3.3.4: Acoustic Assessment Summary Table - Impacts from Stationary Noise Sources
Point of
Reception ID
Estimated Sound Level
at POR* (Day and Evening)
(dBA)
Sound Level Limit
(Day and Evening)
(dBA)
Estimated Sound Level
at POR* (Night)
Sound Level Limit
(Night)
Compliance With
Performance Limit
POR_1_POW 47 50 45 45 Yes
POR_1_OLA 44 50 42 -** Yes
POR_2_POW 41 50 39 45 Yes
POR_2_OLA 41 50 38 -** Yes
POR_3_POW 45 50 42 45 Yes
POR_3_OLA 43 50 41 -** Yes
POR_4_POW 42 50 39 45 Yes
POR_4_OLA 40 50 37 -** Yes
*Estimated sound level predictions are based on the maximum sound power specified for
equipment as noted in Section 3.6 - Mitigation Measures and in Appendix 3.3, Table A3.3.5.
**Outdoor Living Area’s not considered noise sensitive during the nighttime period.
Refer to Tables A3.2.5 and A3.2.6 in Appendix 3 for detailed sound level estimates by
source.
Environmental noise impact assessment
for the proposed Kanata North Catholic
Elementary School, City of Ottawa
Ottawa Catholic School Board
20th December, 2016
p. 56
HUGH WILLIAMSON ASSOCIATES INC.
Table A3.3.5: Noise Mitigation, Recommended Maximum Outdoor Sound Power Octave Band Levels for critical equipment
Name Octave Spectrum (Hz/dBa)
63 125 250 500 1000 2000 4000 8000 A
RTU 1, 5 & 7 91 86 82 81 77 73 70 69 82.8
RTU 2, 3, 4, 6, 8, & 9 93 88 84 83 79 75 72 71 84.8
Note:
a. Octave band sound power levels in dB or dBA units re 10-12
Watts b. Units with greater sound power than those noted above are permissible providing suitable
alternative mitigation measures including noise barriers, silencers or acoustic louvres are provided. Alternative mitigation measures, if required, are to be reviewed by a qualified acoustical consultant prior to construction.
c. The maximum outdoor sound power ratings provided above are based on the assessed location of equipment as shown in Figure A3.1.2. It is recommended that a qualified acoustical consultant review any changes to equipment location prior to construction.
HUGH WILLIAMSON ASSOCIATES INC. Ottawa, Ontario, Canada
Postal Address: PO Box 74056, RPO Beechwood, Ottawa, Ontario, K1M 2H9, Canada
Phone/Fax: (613) 747 0983, Email: [email protected], http://www.hwacoustics.ca
RESUMÉ: Dr. HUGH WILLIAMSON, P.Eng.
QUALIFICATIONS: Ph.D. Mechanical Engineering, University of New South Wales, 1972
B.Sc. Mechanical Engineering, (with Distinction), University of Alberta, 1967
Member, Professional Engineers, Ontario
Member, Canadian Acoustical Association
Member, American Society of Heating, Refrigeration and Air-conditioning
Engineers
KEY
COMPETENCIES: Environmental noise and vibration assessments, Environmental Compliance
Approval (ECA). Noise assessment for land use planning
Architectural and building acoustics, acoustics of office spaces, meeting rooms,
auditoriums and studios, noise and vibration control of building mechanical
services.
Industrial noise and vibration assessment and control.
Transportation noise and vibration.
PROFESSIONAL EXPERIENCE:
Hugh Williamson is a professional engineer with many years of experience in the measurement,
analysis and control of noise and vibration. Hugh Williamson Associates was incorporated in 1997 and
provides consulting services in architectural, building, industrial, transportation and environmental
acoustics and vibration. Clients include architects, engineering firms, industrial firms and government
departments. Prior to establishing Hugh Williamson Associates, his career included extensive periods
in industry as well as university level research and teaching. He is a former Director of the Acoustics
and Vibration Unit at the Australian Defence Force Academy. He has published over 50 engineering
and scientific papers and has been an invited speaker on noise and vibration at national and
international conferences. He has more than 20 years of experience as a consultant.
CLIENT LIST:
Hugh Williamson Associates provides consulting services to large and small clients including: National
Research Council, National Capital Commission, J. L. Richards & Associates, Barry Padolsky
Associates, HOK Urbana Architects, Genivar, Nasittuq Corporation, PWGSC, R. W. Tomlinson, Geo.
Tackaberry Construction and Miller Paving.
HUGH WILLIAMSON ASSOCIATES INC. Ottawa, Ontario, Canada
Postal Address: PO Box 74056, RPO Beechwood, Ottawa, Ontario, K1M 2H9, Canada
Phone/Fax: (613) 747 0983, Email: [email protected], http://www.hwacoustics.ca
RESUMÉ: MICHAEL WELLS
QUALIFICATIONS: Registered Architect of NSW, Registration Number: 8111
B. Architecture (Hons), University of Sydney, 2002
B.Sc. Architecture, University of Sydney, 1999
Member, Canadian Acoustical Association
KEY
COMPETENCIES: Environmental noise and vibration assessments, Environmental Compliance
Approval (ECA). Noise assessment for land use planning.
Architectural and building acoustics, acoustics of office spaces, meeting rooms,
auditoriums and studios, noise and vibration control of building mechanical
services.
Industrial noise and vibration assessment and control.
Transportation noise and vibration.
Design services including sketch design, design development (development /
permit applications), contract documents, tendering and contract administration.
PROFESSIONAL EXPERIENCE:
Michael Wells is a professional Architect registered in NSW with many years of experience in the
Architectural and Construction industries. With key competencies in measurement, analysis and
control of noise and vibration, Michael Wells joined Hugh Williamson Associates in 2012 and
provides consulting services in architectural, building, industrial, transportation and environmental
acoustics and vibration. Clients include architects, engineering firms, industrial firms and government
departments. Prior to joining Hugh Williamson Associates, his career includes the founding of
Michael Wells Architect in Sydney Australia which specialized in the design of institutional,
commercial and residential projects. He is a Director of Architectural Workshops Australia and Vision
Blue Pty Ltd. He has more than 10 years of experience as a consultant.
CLIENT LIST:
Hugh Williamson Associates provides consulting services to large and small clients including: National
Research Council, National Capital Commission, J. L. Richards & Associates, Barry Padolsky
Associates, HOK Urbana Architects, Genivar, Nasittuq Corporation, PWGSC, R. W. Tomlinson, Geo.
Tackaberry Construction and Miller Paving.