environmental noise assessment -...

ARKELL WOODS

Preliminary Environmental Noise Assessment

Project Location: Arkell Road, Guelph, Ontario

Prepared for: Moshi Holdings Ltd. 160 Southgate Drive

Guelph, Ontario

August 30, 2013 Revised: March 24, 2014

Revised: October 3, 2014

MTE File No.: 38314-100

TABLE OF CONTENTS Page

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

2.0 CRITERIA ....................................................................................................................... 1

2.1 Noise Levels for Outdoor Recreation Areas............................................................... 1 2.2 Indoor Noise Level Limits ........................................................................................... 3 2.3 Calculation Parameters .............................................................................................. 3

3.0 ANALYSIS PROCEDURES ........................................................................................... 5

3.1 Road Traffic Data ........................................................................................................ 5 3.2 Calculation Methods ................................................................................................... 5

4.0 ANALYSIS ...................................................................................................................... 6

4.1 Noise Level Calculations ............................................................................................ 6 4.2 Building Components .................................................................................................. 6 4.3 Noise Attenuation Barrier ........................................................................................... 6 4.4 Noise Warning Clauses .............................................................................................. 6

5.0 CONCLUSIONS AND RECOMMENDATIONS ............................................................. 8

FIGURES FIGURE 1 – LOCATION PLAN ................................................................................................ 2 FIGURE 2 – NOISE ASSESSMENT PLAN .............................................................................. 4

TABLES TABLE 1 - REQUIRED NOISE CONTROL MEASURES FOR OUTDOOR LIVING AREAS .. 1 TABLE 2 - REQUIRED NOISE CONTROL MEASURES FOR INDOOR LIVING AREAS ...... 3 TABLE 3 - PROJECTED 2025 ROAD TRAFFIC VOLUMES FOR ARKELL ROAD ............... 5 TABLE 4 - PROJECTED 2025 ROAD TRAFFIC VOLUMES FOR GORDON STREET ......... 5 TABLE 5 – SUMMARY OF ROAD TRAFFIC NOISE LEVELS ................................................ 7

APPENDICES APPENDIX A – ROAD TRAFFIC DATA APPENDIX B – NOISE CALCULATIONS

Preliminary Environmental Noise -1- MTE File No.: 38314-100 Assessment - Arkell Woods October 3, 2014

1.0 INTRODUCTION MTE Consultants Inc. was retained by Moshi Holdings Ltd. to complete a Preliminary Environmental Noise Assessment in support of a zone change application for a new townhouse condominium development, Arkell Woods, located north of Arkell Road and east of Gordon Street in Guelph, Ontario. The site has a total development area of approximately 2.3 ha and is legally described as Part of Lot 6, Concession 8 (Geographic Township of Puslinch) Lots 3, 4 and 6 Registered Plan 514, City of Guelph. The property is bounded to the southeast by Arkell Road, to the north and east by Provincially Significant Wetlands (PSW) known as the Torrance Creek Swamp and open space, and to the southwest by existing institutional development. Refer to Figure 1.0 for a Location Plan. The Draft Plan of Condominium prepared by Astrid J. Clos Planning Consultants proposes 19 townhouse blocks. The site will have a looped common element roadway that is accessed off of Arkell Road, as well as common amenity space, above grade parking space and a SWM pond. The purpose of this study is to determine the noise impact from Arkell Road and Gordon Street on the subject property, and recommend noise control measures to meet the Ministry of the Environment’s guidelines while satisfying the planning requirements of the City of Guelph.

2.0 CRITERIA This report and analysis have been completed using the requirements of the Ministry of the Environment’s (MOE’s) Publication NPC-300: Environmental Noise Guideline: Stationary and Transportation Sources – Approval and Planning (2013). 2.1 Noise Levels for Outdoor Recreation Areas The recommended outdoor day-time noise levels, taken from Table C-1 in the Publication NPC-300 are:

Usage

Between Hours

Road Noise Levels

Outdoor Living Area

07:00 to 23:00

55 dBA Leq Table 1 summarizes the noise control measures required for various conditions. TABLE 1 - REQUIRED NOISE CONTROL MEASURES FOR OUTDOOR LIVING AREAS

Day-time (07:00-23:00) Exceeds Objective By Noise Control Measures 55 dBA or less 0 dBA No requirements or conditions

56-60 dBA 1-5 dBA Noise Warning Clause

61+ dBA 6+ dBA Alternative Land Use

Alternative Draft Plan Designs Barriers

N

ARKELL WOODS

LOCATION PLAN

25

38314-100

N.T.S.

FIGURE 1.0


2.2 Indoor Noise Level Limits Similar to outdoor noise levels limits, the recommended indoor noise levels are given in Table C-2 in Publication NPC-300:

Usage Between Hours Road Noise Levels (Leq)

Indoor Living Area

07:00 to 23:00 45 dBA

Indoor Living Area (Sleeping Quarters)

23:00 to 07:00 40 dBA

Outdoor sound levels (calculated at the plane of the bedroom window for night-time hours and at the plane of the living room window for day-time hours) are used to determine if acoustical mitigation measures are required. Table 2 summarizes control measures for indoor sound levels based on a 10dBA reduction for a standard wall section applied to the outdoor sound levels. TABLE 2 - REQUIRED NOISE CONTROL MEASURES FOR INDOOR LIVING AREAS

Day-time (07:00-23:00)

Night-time (23:00-07:00)

Exceeds Objective By Noise Control Measures

45 dBA or less 40 dBA or less 0 dBA No requirements or conditions

46-55 dBA 41-50 dBA 1-10 dBA Noise Warning Clause Provisions for air conditioning

56+ dBA 51+ dBA 10+ dBA

Central A/C or other ventilation system installed prior to occupancy

Possible need for acoustic treatment of building components

2.3 Calculation Parameters As noted above, the allowable outdoor noise level is 55 dBA with up to 60 dBA being allowed with a noise warning clause. The allowable indoor day-time (07:00 - 23:00), and night-time (23:00 - 07:00) noise levels are 45dBA and 40dBA respectively. Indoor noise levels are 10 dBA less than outdoor noise levels for buildings with standard wall construction. Therefore, it can be concluded that when acceptable outdoor noise levels are achieved, the indoor daytime noise levels are also acceptable. For example, if the outdoor noise level is 60 dBA, then the indoor noise level equals 50 dBA. This would be acceptable with a noise warning clause and provisions for central air conditioning. Day-time and night-time noise calculations for indoor noise levels at locations which represent the worst-case impact from road sources have been included. The calculations have been completed for the ground and second floor, at elevations 1.5m and 4.5m, respectively, above ground level at the building face closest to the noise sources. Calculations were completed for Setback lines 1 and 2 for the road traffic as shown on Figure 2.0.

25

FIGURE 2.0

38314-100

MAR.10/14

1:1000

1A

2A

3A

POINT OF

ASSESSMENT

DISTANCE FROM

ARKELL

ROAD

<15m

22.3m

66.1m

DISTANCE FROM

GORDON

STREET

170m

170m

170m

1B

2B

3B

<15m

20.8m

47.4m

275m

275m

275m

1C

2C

3C

<15m

20.7m

46.2m

297m

297m

297m

A1


3.0 ANALYSIS PROCEDURES 3.1 Road Traffic Data The noise sources considered were:

• Arkell Road; and • Gordon Street

2010 traffic volumes for Arkell Road & Gordon Street were provided by the City of Guelph Traffic Services. These volumes were projected to 2025 assuming a 2% annual growth rate. Projected 2025 traffic volumes for Arkell Road & Gordon Street are summarized in Tables 3 and 4. See Appendix A for transportation data. 3.2 Calculation Methods Road noise levels were calculated using Stamson v5.03 computer program from the MOE. Day-time and night-time road noise levels were calculated based on daily traffic counts. The day-time volume is obtained by multiplying the average daily traffic volume by the fraction of daily traffic expected during the day-time period (90 percent for Arkell Road and Gordon Street). The night-time volumes are obtained in a similar manner (except using 10 percent for expected night-time traffic). Noise calculations are attached in Appendix B TABLE 3 - PROJECTED 2025 ROAD TRAFFIC VOLUMES FOR ARKELL ROAD

Arkell Road Projected 2025 AADT – 9,304vpd

Speed Limit = 50 km/hr Cars Medium Trucks (0%) Heavy Trucks (2.6%)

Day-time Volume 8156 0 218

Night-time Volume 906 0 24

TABLE 4 - PROJECTED 2025 ROAD TRAFFIC VOLUMES FOR GORDON STREET

Gordon Street Projected 2025 AADT – 39,997 vpd

Speed Limit = 60 km/hr Cars Medium Trucks (0%) Heavy Trucks (2.8%)

Day-time Volume 34989 0 1008

Night-time Volume 3888 0 112


4.0 ANALYSIS 4.1 Noise Level Calculations This noise report has been completed to calculate the setbacks required from Arkell Road to address the MOE Noise Guidelines. All setback lines are shown on MTE Figure 2. Setback line 1 - Noise calculations were completed to determine the minimum source-receiver distance to achieve adequate noise attenuation for outdoor living areas without a noise barrier. Setback line 2 - Noise calculations were also completed to determine the minimum source-receiver distance to achieve adequate noise attenuation without a noise warning clause registered on title. Day-time outdoor noise levels defined by the Setback line 1 apply to locations considered to be outdoor living areas, where the receiver is 3 m off of the building envelope and at a height of 1.5 m. Indoor day-time and night-time noise levels for the living room and bedroom areas defined by Setback line 2 apply to a receiver at the building envelope face, 1.5 m and 4.5 m respectively above ground level. The elevations for the Setback lines were established based on existing road grades and the proposed development plans. The summary of road traffic noise levels is found in Table 5. 4.2 Building Components Dwellings proposed to be built adjacent to Arkell Road do not require special building components. 4.3 Noise Attenuation Barrier Table 5 indicates that the day-time outdoor noise levels beyond Setback line 1 will not exceed 60 dBA and thus will not require a noise attenuation barrier. A noise attenuation barrier (no higher than 1.8m) will be required for any outdoor living areas along Arkell Road, constructed between the road right-of-way and Setback Line 1. It should be noted that under the current development plan, units 1, 65 and 66 would require noise attenuation barriers for their outdoor living areas. Detailed noise analysis and wall design (if necessary) will be completed during final design. 4.4 Noise Warning Clauses Noise calculations indicated that the outdoor noise level between Arkell Road and Setback Line 2 exceed the allowable indoor day-time noise level of 45 dBA (corresponding to plane of window limits of 55dBA). Since the night-time noise levels at Setback Line 2 are less than the allowable night-time noise level of 40 dBA (50 dBA at the pane of window), the day-time criteria governs. Based on this information, the proposed dwellings located between Arkell Road and Setback Line 2 must be fitted with a forced air heating system to permit the future installation of central air conditioning and a noise warning clause must be registered on the title. See Table 5 for road traffic noise calculation results. The noise levels beyond Setback Line 2 meets the MOE’s criteria for both day-time and night-time conditions.

Arkell Rd Gordon St Arkell Rd Gordon St

1A <15 170 <15 170

1B <15 275 <15 275

1C <15 297 <15 297

2A 22.3 170

2B 20.8 275

Indoor Noise

Level Limit

(dBA)

Comment

Distance fromCentre Line

to Achieve Limit (m)

Distance fromCentre Line

to Achieve Limit (m)

No 55 65No buildings onsite will require special Building

Components50 Day-time governs

TABLE 5: SUMMARY OF ROAD TRAFFIC NOISE LEVELS

Setback Line

Outdoor

Living Area

(OLA)2

DAY-TIME NOISE LEVELS NIGHT-TIME NOISE LEVELS

Indoor Noise

Level Limit

(dBA)

Outdoor Living

Area (OLA)

Noise Level

Limit1 (dBA)

Comments3

Yes N/A 60

Noise (acoustic) control barrier required for outdoor

living areas between Setback Line 1 and Arkell

Road. Provisions for A/C and NWC Type B+C 2B 20.8 275

2C 20.7 297

3A 66.1 170 66.1 170

3B 47.4 275 47.4 275

3C 46.2 297 46.2 297

1 - Assuming standard wall construction (provides 10dBA noise level attenuation).

2 - OLA means Outdoor Living Area (3m off building envelope at 1.5m high).

3 - NWC means Noise Warning Clause, AC means central air conditioning

40 Day-time governsNo 45 55

Provisions for A/C and NWC Type A+C required for

dwellings constructed between Setback Line 1 and

Setback Line 2

Yes N/A 60 Road. Provisions for A/C and NWC Type B+C

required for dwellings constructed between Setback

Line 1 and Arkell Road


5.0 CONCLUSIONS AND RECOMMENDATIONS Based on the foregoing analysis, the following conclusions and recommendations can be made for this development: 1. Provisions for central air conditioning must be made for houses constructed between

Setback line 1 and Arkell Road. In addition, a noise attenuation barrier will be required only for any outdoor living area between the Arkell Road right-of-way and Setback Line 1. Under the current development concept, units 1, 65 and 66 would require noise attenuation barriers to shield their private outdoor living areas. If detailed noise calculations find that the outdoor sound levels still exceed 55 dBA despite the noise barriers, a noise warning clause shall be registered on title, worded as follows: TYPE B & C: “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 traffic may on occasions interfere with some activities of the dwelling occupants as the sound levels exceed the sound level limits of the Municipality and the Ministry of Environment. This dwelling unit has been designed with the provision for adding central air conditioning at the occupant’s discretion. Installation of central air conditioning by the occupant in low and medium density developments will allow windows and exterior doors to remain closed, thereby ensuring that the indoor sound levels are within the sound level limits of the Municipality and the Ministry of Environment.”

If the noise calculations find that the outdoor sound levels are below 55 dBA after the

inclusion of the noise barriers, the noise warning clause shall be worded as follows:

TYPE C: This dwelling unit has been designed with the provision for adding central air conditioning at the occupant’s discretion. Installation of central air conditioning by the occupant in low and medium density developments will allow windows and exterior doors to remain closed, thereby ensuring that the indoor sound levels are within the sound level limits of the Municipality and the Ministry of Environment.”

2. Provisions for central air conditioning must be made for houses constructed between

Setback line 2 and Setback Line 1. In addition, a noise warning clause shall be registered on title and worded as follows;

TYPE A & C: “Purchasers/tenants are advised that the sound levels due to increasing road traffic may occasionally interfere with some activities of the dwelling occupants as the sound levels exceed the sound level limits of the Municipality and the Ministry of Environment. This dwelling unit has been designed with the provision for adding central air conditioning at the occupant’s discretion. Installation of central air conditioning by the occupant in low and medium density developments will allow windows and exterior doors to remain closed, thereby ensuring that the indoor sound levels are within the sound level limits of the Municipality and the Ministry of Environment.”

APPENDIX A

ROAD TRAFFIC DATA

APPENDIX B

NOISE CALCULATIONS

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