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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
ACOUSTIC ASSESSMENT OF THE PROPOSED
DEWDNEY MOUNTAIN FARMS QUARRY
Township of Galway Cavendish and Harvey
Prepared for
Dewdney Mountain Farms Limited
1503 Flos Road 8 East
Elmvale, Ontario L0L 1P0
Prepared by
Hugh Williamson Associates Inc
13 September 2011
Acoustic Assessment of the Dewdney Mountain Farms Quarry REPORT
Township of Galway, Cavendish and Harvey 13 September 2011
P a g e | i
HUGH WILLIAMSON ASSOCIATES INC.
ACOUSTIC ASSESSMENT OF THE PROPOSED
DEWDNEY MOUNTAIN FARMS QUARRY
Table of Contents
Section Page Table of Contents i 1.0 Introduction 1
2.0 Detailed Facility Description 5
3.0 Noise Source Summary 6
4.0 Point of Reception Summary 8 5.0 Recommended Mitigation Measures 9
(Site Plan Recommendations)
6.0 Assessment Criteria, Performance Limits 13
7.0 Impact Assessment 14
8.0 Conclusions and Recommendations 19
References 20
Appendix 1 Figures 21 Appendix 2 Acoustic Modeling Details 37 Resumé Dr. Hugh Williamson
Acoustic Assessment of the Dewdney Mountain Farms Quarry REPORT
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HUGH WILLIAMSON ASSOCIATES INC.
ACOUSTIC ASSESSMENT OF THE PROPOSED DEWDNEY MOUNTAIN FARMS QUARRY
1.0 Introduction
Dewdney Mountain Farms Limited wishes to apply for a Class A Licence, Category 4, under
the Aggregate Resources Act to establish and operated a quarry, located in the Township of
Galway, Cavendish and Harvey. This acoustic study, carried out by Hugh Williamson
Associates, assesses the potential impact of noise from the Dewdney Mountain Farms quarry
operations on nearby receptors in accordance with Ontario Ministry of Environment (MoE)
guidelines. It is intended that this report will form part of the application for a licence under
the Aggregate Resources Act.
This report has been prepared in accordance with the MoE Document NPC-233, Information
to be Submitted for Approval of Stationary Sources of Sound, October 19951. Noise from the
facility is to be assessed according to MoE Documents: NPC-232, Sound Level Limits for
Stationary Sources in Class 3 (Rural) Areas, October 19952 and NPC-205, Sound Level Limits
for Stationary Sources in Class 1 & 2 (Urban) Areas, October 19953. The report follows the
recommended format contained in, Sample Application Package, Basic Comprehensive
Certificate of Approval (Air and Noise), July 20094.
This report assesses the impact of all noise sources occurring on-site, within the proposed
license boundaries, except for noise and vibration due to blasting. The impacts of noise and
vibration from blasting will be assessed by other studies.
The noise assessment methodology is summarised below.
Identification of noise sensitive receptors in the vicinity of the quarry. Potential noise
sensitive receptors include residences, motels, places of worship, schools and hospitals.
Determination of the MoE sound level limits which will apply at each of the noise
sensitive receptors.
Identification of the sources of noise that will arise from quarry operations. In the
current study, the strengths of the various noise sources were obtained from
measurement of similar operations at other Ontario quarries.
Based on the strengths of the individual noise sources, noise levels due to quarry
operations are predicted at nearby noise sensitive receptors. The MoE methodology
requires that compliance be assessed under predictable “worst case” conditions for
normal operations.
Acoustic Assessment of the Dewdney Mountain Farms Quarry REPORT
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HUGH WILLIAMSON ASSOCIATES INC.
Assessment of compliance of the noise due to quarry operations with MoE sound level
limits. Where appropriate, mitigation measures are recommended such that compliance
with MoE sound level limits is achieved at all receptors.
Surrounding Lands, Acoustic Environment and Critical Receptors
Directions in this report are in reference to site north as shown in the Area Plan, Figure A1.1,
Appendix 1. The current zoning for the surrounding area is shown in Figure A1.3.
The Dewdney Mountain Farms quarry is located north-east of Bobcaygeon, Ontario, adjacent
to Ledge Road, north of the intersection of County Road 36 and Quarry Road in the Township
of Galway, Cavendish and Harvey as shown in Figure A1.1.
The legal description of the land occupied by the Dewdney Mountain Farms quarry site is as
follows.
Part Lots 28, 29 & 30, Concession 15
Township of Galway, Cavendish and Harvey
County of Peterborough
The Municipal Zoning of land surrounding the Dewdney Mountain Farms quarry is Rural
(RU) and Wilderness (WS) as shown in the Zoning Plan, Figure A1.3. The quarry site itself is
zoned Rural, (RU).
The quarry site is located at the northern extremity of a broad ridge, running approximately
north-south. To the west and east of the site, the surrounding land falls away with some natural
sharp changes in elevation. To the north, the land falls away to a series of small lakes. To the
south, the ridge narrows and slopes towards County Road 36. In all directions, the land is
forested.
Critical Receptors
Ledge Road forms the eastern boundary of the Dewdney Mountain Farms quarry. A number
of receptors are located along Ledge Road. There are also receptors along Tully Road to the
south and Bass Lake Road to the west.
Twelve noise sensitive receptors are shown in Figure A1.1 and listed in Table 1. Of these, six
critical receptors (R1, R2, R3, R5, R10 and R12), were selected as being the receptors, most
likely to be impacted by noise from the Dewdney Mountain Farms quarry. Other noise
sensitive receptors are at greater distances from the quarry and will be less affected by noise.
With the possible exception of R8 (# 789 Tully Road), all receptors are Seasonal Residences
(generally hunting camps).
Acoustic Assessment of the Dewdney Mountain Farms Quarry REPORT
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HUGH WILLIAMSON ASSOCIATES INC.
In order to consider the worst case for each receptor, points of reception are taken as an
outdoor living area located 30 m towards the quarry from each residence as per MoE
Guidelines2. Note that the closest residences are 1-story, so that second storey window points
of reception are not relevant in these cases.
Table 1: Points of Reception
Point of
Reception
Description
Distance from the Extraction Limit to
the Nearest Point of Reception*
(metres)
Elevation
(metres above sea level)
R1
Critical
Seasonal Residence, single storey (closest to the north); # 2416 Ledge Road. This is the quarry owner’s property.
910
290
R2
Critical
Seasonal Residence, single storey (closest to the northeast); Ledge Road
580
293
R3
Critical
Seasonal Residence, single storey (closest to the east); # 2423 Ledge Road
155
314
R4
Seasonal Residence, single storey (to the east); # 2373 Ledge Road
995
315
R5
Critical
Seasonal Residence, single storey (closest to the east at the south end of the quarry ); # 2287 Ledge Road
270
305
R6
Seasonal Residence, single storey (closest to the south-east on eastern side of Ledge Road); # 2183 Ledge Road
1225
300
R7
Seasonal Residence, single storey (closest to the south-east on western side of Ledge Road); # 2184 Ledge Road
1250
300
R8
Residence, single storey; # 789 Tully Road
1500
255
Acoustic Assessment of the Dewdney Mountain Farms Quarry REPORT
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HUGH WILLIAMSON ASSOCIATES INC.
Point of
Reception
Description
Distance from the Extraction Limit to
the Nearest Point of Reception*
(metres)
Elevation
(metres above sea level)
R9
Seasonal Residence, single storey; in forest, access possibly from Tully Road or Bass Lake Road
940
265
R10
Critical
Seasonal Residence, single storey (closest to the southwest); in forest, access possibly from Tully Road or Bass Lake Road
840
255
R11
Seasonal Residence, single storey (closest to the north-west); access possibly from Bass Lake Road or White Valley Road
2170
273
R12
Critical
Seasonal Residence, single storey (closest to the north-west corner of the quarry); near the Twin Mountains Snowmobile Club at # 2600 Bass Lake Road
1760
260
Notes:
A point of reception for the Outdoor Living Area, OLA, of a rural residence is defined as a ‘point on the premise of a person within 30 m of a dwelling’, see MoE Document NPC 232
2.
Critical denotes a point of reception selected for detailed analysis and for which predicted noise levels are presented in this report.
Acoustic Assessment of the Dewdney Mountain Farms Quarry REPORT
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HUGH WILLIAMSON ASSOCIATES INC.
2.0 Detailed Facility Description
Dewdney Mountain Farms quarry will produce both dimension stone and aggregate products.
Excavation will be carried out using excavators, loaders and, where necessary, drilling and
blasting. Dimension stone materials will be sorted and stored in stock piles using loaders or
skid steers. Aggregate materials may be further processed by crushing, screening and/or
washing. Product material, dimension stone or aggregates, are loaded onto trucks for delivery
off-site.
Extraction of material will take place above the water table. The depth of excavation varies
across the site and may be up to approximately 10 metres.
A concrete batch plant may also operate on the site. Raw materials for concrete, aggregate,
water and cement powder, are loaded into the rotating drums of concrete trucks from silos or
via conveyors. Each concrete truck rotates its drum for a brief period to mix the raw materials,
then the truck departs the site. Bulk cement powder is delivered by truck periodically. The
cement powder is pumped from the truck to a storage silo using a blower.
Generally, the aggregate processing equipment (crushing, screening and washing) will be
brought to the site only during periods of production.
Shipping of up to a maximum of 8 trucks loads / hour of dimension stone or aggregate is
expected during peak periods of operation. In addition, shipping of up to a maximum of 8
trucks loads / hour of concrete is also expected during the peak periods of operation.
The site has been divided up into 7 extraction areas as shown in Figure A1.2. Area 7 contains
the main entrance to the quarry and will be extracted last. Prior to extraction, Area 7 will be
used as the location for the scale house, maintenance facilities, storage and the concrete plant.
Main quarry operations will take place during day time hours 07:00 to 19:00. Limited truck
loading and shipping may take place outside day time hours, e.g. prior to 07:00.
Acoustic Assessment of the Dewdney Mountain Farms Quarry REPORT
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HUGH WILLIAMSON ASSOCIATES INC.
3.0 Noise Source Summary
Quarrying operations
Table 2 contains sound power data for all operations which are significant noise sources
during quarry operations, including excavators, rock drill, loaders, skid steers, crushing,
screening/washing, on-site truck movements and concrete production. This data comes from
noise measurements made by Hugh Williamson Associates at similar operations in quarries or
other locations in Ontario.
As actual models of equipment in use in the quarry will vary from time to time, it is
recommended that noise source data be evaluated if new types of equipment are brought on
site. Measurements should be compared with the levels shown in Table 2 to ensure that sound
level limits are met at receptors.
Portable equipment for site preparations and rehabilitation
Portable construction equipment will be used occasionally for site preparation (e.g. land
clearing and construction of berms) and rehabilitation. This equipment could typically include
excavators, hydraulic shovels and dozers. Site preparation and rehabilitation activities will
take place only during daytime hours (07:00 – 19:00).
Acoustic Assessment of the Dewdney Mountain Farms Quarry REPORT
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HUGH WILLIAMSON ASSOCIATES INC.
Table 2: Noise Source Summary Table
Source ID
Source
Description
Sound Power
(dBA)
Source
Location Ht. above ground
(m)
Sound
Character- istics
Noise
Control Measures
Excavator
Case CX210 or similar
115.2
3
Non-tonal, non-directional
Berms or lift faces when
needed
Loader
CAT 950G or similar
109.9
3
Non-tonal, non-directional
Berms or lift faces when
needed
Skid Steer
Case 95XT or similar
108.9
1.5
Non-tonal, non-directional
Berms or lift faces when
needed
Rock Drill
Hydraulic, top hammer or similar
118.6
2
Non-tonal, non-directional
Berms or lift faces when
needed
Crushing Plant
Portable crushing plant with diesel generator
120.5
3
Non-tonal, non-directional
Berms or lift faces when
needed
Screening/Washing
Plant
Vibrating screen plant, with or without washing, diesel generator and one loader
111.3
3
Non-tonal, non-directional
Not
Applicable
Truck Movements
on the Internal Haul Route
Single highway truck, slow moving
110.1
3
Non-tonal, non-directional
No Jake Brakes;
20 kph max
Concrete Plant
(mixing)
Concrete truck, high speed mix
112.3
3
Non-tonal, non-directional
Barriers or
berms
Cement Powder
Unloading
Pumping cement into silo
118.7*
2
Tonal*, non-directional
Barriers or
berms
* 5 dBA penalty to be applied to tonal noise sources in noise modelling5
Acoustic Assessment of the Dewdney Mountain Farms Quarry REPORT
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HUGH WILLIAMSON ASSOCIATES INC.
4.0 Point of Reception Summary
Noise levels have been predicted at the critical receptors using predictable “worst case”
assumptions under normal operations and using the ISO sound propagation methodology7, as
implemented in the sound prediction software Cadna-A, version 4.1.137. The ISO
methodology provides a conservative (i.e. high) estimate of the noise level at a receptor taking
into account adverse wind and meteorological conditions which favour noise propagation
towards the point of reception.
The estimation method includes the following.
Distance attenuation is based on spherical spreading.
Atmospheric attenuation.
Foliage and ground attenuations, as appropriate.
Barrier attenuation, as appropriate.
The MoE require that sound levels at points of reception be predicted using „worst case‟
assumptions for normal operations. The MoE also favour the ISO sound propagation
methodology. The “worst case” conditions are very conservative, particularly for mobile
equipment where “worst case” corresponds typically to the closest distance that the equipment
will ever get to individual receptors. Such a situation will occur for only brief periods over the
whole of the life of the quarry.
For the Dewdney Mountain Quarry, each extraction area has been analyzed separately. In all
instances, „worst case‟ corresponds to situations where the extraction equipment is on the
surface and located closest to critical receptors R3 and/or R5.
Details and results of sound level predictions are contained in Appendix 2. A summary of
point of reception worst case predictions at each critical receptor is provided for all extraction
areas in Tables A2.6.x in Appendix 2.
Acoustic Assessment of the Dewdney Mountain Farms Quarry REPORT
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HUGH WILLIAMSON ASSOCIATES INC.
5.0 Recommended Mitigation Measures (Site Plan Recommendations)
Mitigation measures to reduce noise emissions from quarry operations are are detailed below.
It is recommended that these measures be included on the site.
Note: Figures A1.6 to A1.15 illustrate examples of worst case mobile equipment locations for
particular extraction areas.
General noise mitigation requirements:
Quarry operations, including the concrete plant and crushing plant operations, can
take place only during the daytime hours of 07:00 to 19:00. (Some night loading
and shipping is allowed, see below.)
Except in extraction areas 4B, 5B, 6B and 7, where reduced operations are
specified, the maximum numbers of equipment to be operated are as follows.
o Two excavators and one rock drill, or, three excavators
o Two loaders
o One skid steer
o One screening/wash plant
o One crushing plant
o One concrete plant, including one cement powder unloading operation
The concrete plant is to be located in the south west corner of extraction area 7, as
shown in Figures A1.4 and A1.5. Concrete production can take place up to a
maximum of 8 truckloads per hour. Barriers or berms required for the concrete
plant are as follows.
o A 5 m high barrier, 20 m long and no more than 5 m from the center of
the concrete truck is to shield receptors to the west.
o A 5 m high barrier, 12 m long and no more than 3 m from the cement
powder blower, usually located on the cement powder truck, is to shield
receptors to the west.
o A 5 m high berm, 20 m long is to shield the concrete plant and the cement
powder unloading operation from Receptor R5 to the southeast. The berm
should be no more than 20 m from the locations of the centres of concrete
truck or the cement powder unloading blower.
Noise barriers or berms are to be solid, having no gaps, and have a surface density
of no less than 20 kg/m2. Examples of suitable barriers or berms are as follows.
o Earth, gravel or aggregate berms
o Concrete or brick walls
o Commercial noise barriers
Acoustic Assessment of the Dewdney Mountain Farms Quarry REPORT
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HUGH WILLIAMSON ASSOCIATES INC.
The crushing plant and the screening/washing plant are restricted the following two
locations
o Crushing/screening/washing in Area 1, (shown in Figure A1.6):
The crushing plant to be at least 1150 m from R3, and shielded from R3
by a 6 m high berm and/or lift face which is no more than 20 m from
the crushing plant.
The screening/washing plant is to be at least 1150 m from R3, no
shielding is required for the screening/washing plant.
o Crushing/screening/washing in Area 2 (shown in Figure A1.8):
The crushing plant to be at least 1200 m from R3 and R5, and shielded
from R3 and R5 by a 6 m high berm and/or lift face which is no more
than 20 m from the crushing plant.
The screening/washing plant is to be at least 1200 m from R3 and R5,
no shielding is required for the screening/washing plant.
Truck loading and shipping off site during the day, 07:00 to 19:00, is limited to 8
truckloads per hour of dimension stone or aggregate material.
Truck loading and shipping off site, using one loader and one skid steer, may occur
at night, 19:00 to 07:00, to a maximum of 4 truckloads per hour of dimension stone
or aggregate material.
Truck movements on-site are to be controlled as follows.
o Trucks are to enter and exit the site via the main Ledge Road entrance in
Area 7.
o Truck speeds are to be limited to 20 km/h.
o Compression brakes, i.e. Jake Brakes, are not to be used
Mitigation Requirements for Individual Extraction Areas:
Extraction Area 1 (see Figures A1.6 and A1.7):
Excavators, loaders, rock drill and skid steer may be used without the need for
noise mitigation
Extraction Area 2 (see Figures A1.8 and A1.9):
Excavators, loaders, rock drill and skid steer may be used without the need for
noise mitigation
Extraction Area 3 (see Figure A1.10):
Operations of the excavators and rock drill must be no more than 20 m from a 4 m
high berm and/or lift face which provides shielding for receptor R3.
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HUGH WILLIAMSON ASSOCIATES INC.
A 5 m high berm located in the eastern setback, along the eastern quarry boundary,
is also required to shield R3 from extraction operations. This berm can be built
progressively as the extraction operation proceeds.
Extraction Areas 4A - more than 550 m from R5 (see Figure A1.11):
Operations of the excavators and rock drill must be no more than 15 m from a 6 m
high berm and/or lift face which provides shielding for receptor R5.
Extraction Areas 4B - less than 550 m from R5 (see Figure A1.12):
Reduced numbers of extraction equipment required:
o one loader or one skid steer, plus one excavator and one rock drill; or,
o one loader or one skid steer, plus two excavators.
Operations of the excavators and rock drill must be no more than 10 m from a 7 m
high berm and/or lift face which provides shielding for receptor R5.
Extraction Areas 5A or 6A - more than 400 m from R3 (see Figure A1.13):
Operations of the excavators and rock drill must be no more than 20 m from a 6 m
high berm and/or lift face which provides shielding for receptor R3.
A 5 m high berm located in the eastern setback, along the eastern quarry boundary,
is also required to shield R3 from extraction operations. This berm can be built
progressively as the extraction operation proceeds.
Extraction Areas 5B or 6B - less than 400 m from R3 (see Figure A1.14):
Reduced numbers of extraction equipment required:
o one loader or one skid steer, plus one excavator; or,
o one loader or one skid steer, plus one rock drill.
Operations of the excavators and rock drill must be no more than 10 m from a 7 m
high berm and/or lift face which provides shielding for receptor R3.
A 5 m high berm located in the eastern setback, along the eastern quarry boundary,
is also required to shield R3 from extraction operations. This berm can be built
progressively as the extraction operation proceeds.
Extraction Area 7 (see Figure A1.15):
Reduced numbers of extraction equipment required:
o one loader and one skid steer, plus one excavator and one rock drill; or,
o one loader and one skid steer, plus two excavators.
Operations of the excavators and rock drill must be no more than 15 m from a 6 m
high berm and/or lift face which provides shielding for receptor R5.
Break in Boundary Berm (if needed):
A secondary entrance to the quarry from Ledge Road is shown near receptor R3. If a berm is
needed is needed for noise control at this location, then a break in the berm can be made such
as shown in Figure A1.16. The shape and extent of the berm break must be such that there is
no direct line of sight to any quarry operations from nearby receptor R3.
Acoustic Assessment of the Dewdney Mountain Farms Quarry REPORT
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HUGH WILLIAMSON ASSOCIATES INC.
Evaluation of Noise Sources
It is recommended that noise source data for the crushing plant, screening and
washing plant, rock drill, excavator, loader and concrete plant be re-evaluated
whenever a new type of equipment is brought on site. If the levels are found to be
significantly different to those given in Table 2, then the mitigation measures
should be reviewed by a qualified acoustical consultant to ensure noise levels at
receptors are in compliance with MoE Guidelines.
Portable equipment for site preparations and rehabilitation
Portable construction equipment will be used occasionally for site preparation (e.g.
land clearing and construction of berms) and rehabilitation. This equipment would
typically include excavators, hydraulic shovels and dozers. To minimize the
impact of noise during site preparation and rehabilitation, the construction
equipment used, excavators, bulldozers, etc., will comply with MoE Publication
NPC-1156, Construction Equipment, August 1978. This publication gives noise
standards to be met by construction equipment in Ontario.
Site preparation and rehabilitation activities will take place only during daytime
hours (07:00 – 19:00).
Acoustic Assessment of the Dewdney Mountain Farms Quarry REPORT
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HUGH WILLIAMSON ASSOCIATES INC.
6.0 Assessment Criteria, Performance Limits
Sound level limits in the MoE guidelines2 depend on the acoustical classification of the area as
Class 1, 2 or 3.
Class 1 Area (Urban) 'an area with an acoustical environment typical of a
major urban area, where the background noise is dominated by urban hum (primarily
road traffic noise)'
Class 2 Area (Urban) 'an area with an acoustical environment that has qualities
representative of both Class 1 and Class 3 Areas, and in which a low ambient sound
level, normally occurring between 23:00 and 07:00 hours in Class 1 areas, will
typically be realised as early as 19:00 hours.
Class 3 Area (Rural) 'acoustical environment that is dominated by natural
sounds having little or no road traffic ….'
In the vicinity of the Dewdney Mountain Farms quarry, the surrounding acoustical
environment is dominated by natural sounds, with little road traffic and, hence, is considered
as a Class 3 Area (Rural).
For a Class 3 Area (Rural), the applicable outdoor sound limits at noise sensitive receptors,
based on 1-hour equivalent sound levels, LEQ, are either the exclusion noise limits given in
Table 3, or higher limits if established by an assessment of background noise. Background
sound assessment was not carried out, hence the levels given in Table 3 for a Class 3 Area
(Rural) are taken as the sound level limits for the purpose of this assessment for all critical
receptors.
Table 3: Exclusion Sound Level Limits by Time of Day2
Time of Day Class 3 Area (Rural) LEQ (dBA)
07:00 – 19:00 45
19:00 – 23:00 40
23:00 – 07:00 40
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HUGH WILLIAMSON ASSOCIATES INC.
7.0 Impact Assessment
Tables 4.x (x = extraction area) compares the estimated sound levels at the selected critical
noise sensitive receptors with the sound level limits given in Table 3 for each extraction area.
These are “worst case” comparisons, comparing the sound level limits to the estimated sound
levels: (i) with all permitted equipment operating simultaneously, (ii) in locations where the
impact is a maximum, and, (iii) with the noise mitigation set out in Section 5.0. Both day and
night time operations are assessed in Tables 4.x.
From Tables 4.x it is concluded that with implementation of the noise mitigation measures
identified in Section 5, noise emissions from the Dewdney Mountain Farms quarry operations
are in compliance with MoE sound level limits. Once the Dewdney Mountain Farms quarry is
operational, however, it is recommended that a further assessment be carried out for
verification.
Table 4.1: Acoustic Assessment Summary Table, Extraction Area 1
Point of Reception
ID
Day 07:00 to 19:00 Full Operation
Night 19:00 to 07:00
Limited Loading and Shipping
Estimated Sound Level
at POR (worst case)
Sound Level Limit
07:00-19:00 (worst case)
Compliance With
Performance Limit
Estimated Sound Level
at POR (worst case)
Sound Level Limit
19:00-07:00 (worst case)
Compliance With
Performance Limit
R1
39
45 dBA
Yes 29
40 dBA
Yes
R2
39
45 dBA
Yes 29
40 dBA
Yes
R3
45
45 dBA
Yes 35
40 dBA
Yes
R5
42
45 dBA
Yes 32
40 dBA
Yes
R10
38
45 dBA
Yes 26
40 dBA
Yes
R12
35
45 dBA
Yes 22
40 dBA
Yes
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HUGH WILLIAMSON ASSOCIATES INC.
Table 4.2: Acoustic Assessment Summary Table, Extraction Area 2
Point of Reception
ID
Day 07:00 to 19:00 Full Operation
Night 19:00 to 07:00
Limited Loading and Shipping
Estimated Sound Level
at POR (worst case)
Sound Level Limit
07:00-19:00 (worst case)
Compliance With
Performance Limit
Estimated Sound Level
at POR (worst case)
Sound Level Limit
19:00-07:00 (worst case)
Compliance With
Performance Limit
R1
35
45 dBA
Yes 24
40 dBA
Yes
R2
36
45 dBA
Yes 25
40 dBA
Yes
R3
45
45 dBA
Yes 34
40 dBA
Yes
R5
44
45 dBA
Yes 34
40 dBA
Yes
R10
39
45 dBA
Yes 27
40 dBA
Yes
R12
31
45 dBA
Yes 19
40 dBA
Yes
Table 4.3: Acoustic Assessment Summary Table, Extraction Area 3
Point of Reception
ID
Day 07:00 to 19:00 Full Operation
Night 19:00 to 07:00
Limited Loading and Shipping
Estimated Sound Level
at POR (worst case)
Sound Level Limit
07:00-19:00 (worst case)
Compliance With
Performance Limit
Estimated Sound Level
at POR (worst case)
Sound Level Limit
19:00-07:00 (worst case)
Compliance With
Performance Limit
R1
36
45 dBA
Yes 25
40 dBA
Yes
R2
37
45 dBA
Yes 27
40 dBA
Yes
R3
45
45 dBA
Yes 37
40 dBA
Yes
R5
45
45 dBA
Yes 35
40 dBA
Yes
R10
39
45 dBA
Yes 24
40 dBA
Yes
R12
30
45 dBA
Yes 18
40 dBA
Yes
Acoustic Assessment of the Dewdney Mountain Farms Quarry REPORT
Township of Galway, Cavendish and Harvey 13 September 2011
P a g e | 16
HUGH WILLIAMSON ASSOCIATES INC.
Table 4.4A: Acoustic Assessment Summary Table, Extraction Area 4A
Point of Reception
ID
Day 07:00 to 19:00 Full Operation
Night 19:00 to 07:00
Limited Loading and Shipping
Estimated Sound Level
at POR (worst case)
Sound Level Limit
07:00-19:00 (worst case)
Compliance With
Performance Limit
Estimated Sound Level
at POR (worst case)
Sound Level Limit
19:00-07:00 (worst case)
Compliance With
Performance Limit
R1
37
45 dBA
Yes 23
40 dBA
Yes
R2
37
45 dBA
Yes 25
40 dBA
Yes
R3
43
45 dBA
Yes 34
40 dBA
Yes
R5
45
45 dBA
Yes 38
40 dBA
Yes
R10
38
45 dBA
Yes 24
40 dBA
Yes
R12
34
45 dBA
Yes 17
40 dBA
Yes
Table 4.4B: Acoustic Assessment Summary Table, Extraction Area 4B
Point of Reception
ID
Day 07:00 to 19:00 Full Operation
Night 19:00 to 07:00
Limited Loading and Shipping
Estimated Sound Level
at POR (worst case)
Sound Level Limit
07:00-19:00 (worst case)
Compliance With
Performance Limit
Estimated Sound Level
at POR (worst case)
Sound Level Limit
19:00-07:00 (worst case)
Compliance With
Performance Limit
R1
37
45 dBA
Yes 20
40 dBA
Yes
R2
37
45 dBA
Yes 22
40 dBA
Yes
R3
41
45 dBA
Yes 32
40 dBA
Yes
R5
45
45 dBA
Yes 38
40 dBA
Yes
R10
37
45 dBA
Yes 19
40 dBA
Yes
R12
34
45 dBA
Yes 15
40 dBA
Yes
Acoustic Assessment of the Dewdney Mountain Farms Quarry REPORT
Township of Galway, Cavendish and Harvey 13 September 2011
P a g e | 17
HUGH WILLIAMSON ASSOCIATES INC.
Table 4.5A/6A: Acoustic Assessment Summary Table, Extraction Areas 5A and 6A
Point of Reception
ID
Day 07:00 to 19:00 Full Operation
Night 19:00 to 07:00
Limited Loading and Shipping
Estimated Sound Level
at POR (worst case)
Sound Level Limit
07:00-19:00 (worst case)
Compliance With
Performance Limit
Estimated Sound Level
at POR (worst case)
Sound Level Limit
19:00-07:00 (worst case)
Compliance With
Performance Limit
R1
40
45 dBA
Yes 31
40 dBA
Yes
R2
45
45 dBA
Yes 36
40 dBA
Yes
R3
45
45 dBA
Yes 38
40 dBA
Yes
R5
43
45 dBA
Yes 32
40 dBA
Yes
R10
38
45 dBA
Yes 22
40 dBA
Yes
R12
31
45 dBA
Yes 20
40 dBA
Yes
Table 4.5B/6B: Acoustic Assessment Summary Table,
Extraction Areas 5B and 6B
Point of Reception
ID
Day 07:00 to 19:00 Full Operation
Night 19:00 to 07:00
Limited Loading and Shipping
Estimated Sound Level
at POR (worst case)
Sound Level Limit
07:00-19:00 (worst case)
Compliance With
Performance Limit
Estimated Sound Level
at POR (worst case)
Sound Level Limit
19:00-07:00 (worst case)
Compliance With
Performance Limit
R1
36
45 dBA
Yes 29
40 dBA
Yes
R2
39
45 dBA
Yes 33
40 dBA
Yes
R3
45
45 dBA
Yes 40
40 dBA
Yes
R5
43
45 dBA
Yes 33
40 dBA
Yes
R10
38
45 dBA
Yes 22
40 dBA
Yes
R12
30
45 dBA
Yes 19
40 dBA
Yes
Acoustic Assessment of the Dewdney Mountain Farms Quarry REPORT
Township of Galway, Cavendish and Harvey 13 September 2011
P a g e | 18
HUGH WILLIAMSON ASSOCIATES INC.
Table 4.7: Acoustic Assessment Summary Table, Extraction Area 7
Point of Reception
ID
Day 07:00 to 19:00 Full Operation
Night 19:00 to 07:00
Limited Loading and Shipping
Estimated Sound Level
at POR (worst case)
Sound Level Limit
07:00-19:00 (worst case)
Compliance With
Performance Limit
Estimated Sound Level
at POR (worst case)
Sound Level Limit
19:00-07:00 (worst case)
Compliance With
Performance Limit
R1
35
45 dBA
Yes 23
40 dBA
Yes
R2
36
45 dBA
Yes 25
40 dBA
Yes
R3
44
45 dBA
Yes 36
40 dBA
Yes
R5
45
45 dBA
Yes 38
40 dBA
Yes
R10
38
45 dBA
Yes 23
40 dBA
Yes
R12
30
45 dBA
Yes 17
40 dBA
Yes
Acoustic Assessment of the Dewdney Mountain Farms Quarry REPORT
Township of Galway, Cavendish and Harvey 13 September 2011
P a g e | 19
HUGH WILLIAMSON ASSOCIATES INC.
8.0 Conclusions and Recommendations
An acoustic assessment of operations at the Dewdney Mountain Farms quarry has been
conducted. These operations include excavation using a loaders and excavators, rock drilling,
crushing, screening and/or washing, truck loading and truck movements.
Compliance has been assessed using conservative assumptions, both with respect to the noise
sources and with respect to the background sound levels at receptors. It is concluded that,
providing the mitigation measures identified in Section 5 are implemented as recommended,
on-site noise generated by quarry operations is in compliance with the MoE noise limits as set
out in Publication NPC-232, Sound Level Limits for Stationary Sources in Class 3 (Rural)
Areas, October 1995.
Hugh Williamson, Ph.D., P.Eng.
Member, Canadian Acoustical Society
Acoustic Assessment of the Dewdney Mountain Farms Quarry REPORT
Township of Galway, Cavendish and Harvey 13 September 2011
P a g e | 20
HUGH WILLIAMSON ASSOCIATES INC.
References
1. Ministry of Environment Publication NPC-233, Information to be Submitted for
Approval of Stationary Sources of Sound, October 1995.
2. Ministry of Environment Publication NPC-232, Sound Level Limits for Stationary
Sources in Class 3 (Rural) Areas, October 1995.
3. Ministry of Environment Publication NPC-205, Sound Level Limits for Stationary
Sources in Class 1 & 2 (Urban) Areas, October 1995.
4. Ministry of Environment, Sample Application Package, Basic Comprehensive
Certificate of Approval (Air and Noise), July 2009.
5. Ministry of Environment Publication NPC-104, Sound Level Adjustments, August
1978.
6. Ministry of Environment Publication NPC-115, Construction Equipment, August
1978.
7. International Standards Organization, Acoustics - Attenuation of Sound During
Propagation Outdoors, Part 2: General Method of Calculation, ISO 9613-2: 1996(E).
Acoustic Assessment of the Dewdney Mountain Farms Quarry REPORT
Township of Galway, Cavendish and Harvey 13 September 2011
P a g e | 21
HUGH WILLIAMSON ASSOCIATES INC.
Appendix 1
Figures
Contents
Figure A1.1 Area Plan Showing the Dewdney Mountain Farms Quarry Figure A1.2 Site Plan, Dewdney Mountain Farms Quarry Figure A1.3 Zoning Plan Figure A1.4 Area 7, Processing and Main Entry Figure A1.5 Mitigation for Concrete Plant Figure A1.6 Operations in Extraction Area 1 Figure A1.7 Operations in Extraction Area 1 - Detail Figure A1.8 Operations in Extraction Area 2 Figure A1.9 Operations in Extraction Area 2 – Detail Figure A1.10 Operations in Extraction Area 3 – Detail Figure A1.11 Operations in Extraction Area 4A – Detail Figure A1.12 Operations in Extraction Area 4B – Detail Figure A1.13 Operations in Extraction Area 5A – Detail Figure A1.14 Operations in Extraction Area 5B – Detail Figure A1.15 Operations in Extraction Area 7 – Detail Figure A1.16 Example of Break in Berm at Secondary Entrance near R3 (if needed)
Acoustic Assessment of the Dewdney Mountain Farms Quarry REPORT
Township of Galway, Cavendish and Harvey 13 September 2011
P a g e | 22
HUGH WILLIAMSON ASSOCIATES INC.
Figure A1.1 Area Plan (1 km & 5 km grids shown)
Site
North
Proposed
Quarry
True
North
R1 R2
R3 R4
R5
R6 R7
R10
R9
R8
R12
R11
Ledge Rd.
Bass Lake Rd.
Quarry Rd.
County Rd. 36
Tully Rd.
White Valley Rd.
Acoustic Assessment of the Dewdney Mountain Farms Quarry REPORT
Township of Galway, Cavendish and Harvey 13 September 2011
P a g e | 23
HUGH WILLIAMSON ASSOCIATES INC.
Figure A1.2 Site Plan, Dewdney Mountain Farms Quarry – Showing Extraction Areas
290
285
285
285
305
exca
vatio
n lim
it pi
t bot
tom
inte
rmitt
ent s
tream
interm
ittent s
tream
dry
old beaver dam
old beaver dam
pond
pond
inte
rmitt
ent s
tream
inte
rmitte
nt s
tream
steel gate
steel gate
C15
C15
L29
L30
C16
L29
Crown
Crown
Crown
private
private
unopened R
A
private
L27
lotline
lotline
lotline
lotlin
e
C14
L29
L28
C14
L28
C16
C14
L30
open area
open area
open area
open area
open area
open area
open area
open area
intermittent pond
intermittent pond
C
exca vation limit pit b
ot tom
exca vation lim
it pit b
ot tom
Ledge R
oad
Ledge R
oad
exca
vatio
n lim
it pit b
ottom
exca
vatio
n lim
it pit b
otto
m
exca
vatio
n lim
it pit b
otto
m
exca
vatio
n lim
it pi
t bot
tom
exca vation lim
it pit b
ot tom
exca
vatio
n lim
it pi
t bot
tom
exca
vation lim
it pit b
otto
m
exca vation limit pit bot tom
excavation lim
it pit bot tom
298 296
294 292
290 288
exca vation limit pit bot tom
exca vation limit pit bot tom
exca vation limit pit bot tom
exca
vatio
n lim
it pit b
otto
m
exca
vatio
n lim
it pit b
otto
m
29
0
300
298 296
294
302
292
294
298 296
300 302
298 296
304
300 302
300
302
298
300
302
304
306
310
30
8
30
8
31
0
31
0
31
0
31
2
31
4
31
0
31
2
298
296
300
302
304
296 298
292
290
290
292 2
90
288
290
288
294
hunting camp
hunting camp
License Boundary
License Boundary
Lice
nse
Boundary
License Boundary
Lice
nse
Bou
ndar
y
Lice
nse
Boundary
1
3
5
processing/storage area
scale
fuel storage
office/maint shop
scrap storage
unopened R
A
lotline
lotline
lotline
lotlin
e
28
8
290
2
4
6
1A
dug well with wooden walls
308
drainage outlet with silt fence
water drainage way
water drainage way
drainage outlet with silt fence
drainage outlet with silt fence
drainage outlet with silt fence
drainage outlet with silt fence
drainage outlet with silt fence
drainage outlet with silt fence
water drainage way
water drainage way
water drainage way
water drainage way
water drainage way
water drainage way
drainage outlet with silt fence
existing culvert
culvert
water drainage way
water drainage way
drainage outlet with
silt fence
scale house
Note: building locations conceptual only
7processing/storage area
end of township maintained road
UTM coord's
697948.7E
4945906.6N
UTM coord's
697790.8E
4945789.1N
UTM coord's
697230.7E
4945122.6N
UTM coord's
697324.5E
4944874.0N
UTM coord's
UTM coord's
698190.7E
4944497.9N
UTM coord's
698222.6E
4944409.5N
UTM coord's
698582.8E
4944508.5N
UTM coord's
698875.4E
4944590.2N
UTM coord's
698643.1E
4945147.0N
UTM coord's
698464.4E
4945726.3N
seepage
seepage
300
292
BM
BM
BM
285
290
295
300
305
295
285
300
285
290
285
285
exca vation lim
its
exca
vatio
n lim
its
exca
vatio
n lim
its
exca vation lim
its
exca vation limits
exca
vatio
n lim
its
exca vation lim
its
exca
vatio
n lim
its
excavation lim
its
exca vation limits
exca vation limits
exca vation limits
exca vation limits
exca
vatio
n lim
its
exca
vation lim
its
exca
vatio
n lim
its
exca
vatio
n lim
its
exca
vatio
n lim
its
294
294
292
298
296
300
294
30
8
30
8
secondary entrance
primary entrance
dug well with
stone walls
4A
> 550 m
from R5
4B
< 550 m
from R5
6 A
> 400 m
from R3
6 B
< 400 m
from R3
Concrete
Plant
R3
R5
5 A
> 400 m
from R3
5 B
< 400 m
from R3
697200
697200
697400
697400
697600
697600
697800
697800
698000
698000
698200
698200
698400
698400
698600
698600
698800
698800
699000
699000
699200
699200
4944400
4944400
4944600
4944600
4944800
4944800
4945000
4945000
4945200
4945200
4945400
4945400
4945600
4945600
4945800
4945800
Acoustic Assessment of the Dewdney Mountain Farms Quarry REPORT
Township of Galway, Cavendish and Harvey 13 September 2011
P a g e | 24
HUGH WILLIAMSON ASSOCIATES INC.
Figure A1.3 Zoning Plan, Harvey Legend: RU = Rural, HL = Hazard Land, WS = Wilderness
Proposed Dewdney Mountain Farms Quarry
Acoustic Assessment of the Dewdney Mountain Farms Quarry REPORT
Township of Galway, Cavendish and Harvey 13 September 2011
P a g e | 25
HUGH WILLIAMSON ASSOCIATES INC.
Figure A1.4 Area 7, Processing and Main Entry
Figure A1.5 Mitigation for Concrete Plant
Concrete Truck, spinning drum
Cement Powder Unloading
Blower
Cement Powder Barrier
5 m high, 12 m long
< or = 3 m from blower
Barrier for truck loading
5 m high, 20 m long
< or = 5 m from centre of truck
Concrete Plant Berm
5 m high, 20 m long
698490
698490
698500
698500
698510
698510
698520
698520
698530
698530
698540
698540
698550
698550
698560
698560
698570
698570
698580
698580
4944740
4944740
4944750
4944750
4944760
4944760
4944770
4944770
4944780
4944780
4944790
4944790
4944800
4944800
4944810
4944810
Acoustic Assessment of the Dewdney Mountain Farms Quarry REPORT Township of Galway, Cavendish and Harvey 13 September 2011
P a g e | 26
HUGH WILLIAMSON ASSOCIATES INC.
Figure A1.6 Operations in Extraction Area 1
285
285
excava
tion l
imit
pit botto
m
interm
ittent s
tream
dry
old beaver dam
steel gate
steel gate
C15
L29
private
lotline
C14
L29
open area
open area
intermittent pond
C
excava
tion l
imit p
it botto
m
Ledge R
oad
exc
ava
tion lim
it pit b
otto
m
exca
vatio
n lim
it pi
t bot
tom
excava
tion l
imit p
it botto
m
exc
ava
tion
limit p
it bottom
exc
ava
tion lim
it pit b
otto
m
290
310
308
308
310
310
312
310
312
296
292
290
290
292
290
288
290
288
294
hunting camp
Lice
nse B
oundary
Lice
nse
Bou
ndar
y
1
3
5
scale
fuel storage
office/maint shop
scrap storage
lotline
2
6
dug well with wooden walls
drainage outlet with silt fence
drainage outlet with silt fence
drainage outlet with silt fence
drainage outlet with silt fence
water drainage way
water drainage way
water drainage way
water drainage way
water drainage way
scale house
Note: building locations conceptual only
7processing/storage area
UTM coord's
698643.1E
4945147.0N
292
BM
BM
285
285
excava
tion l
imits
exca
vatio
n lim
its
excava
tion lim
its
excava
tion l
imits
exc
ava
tion lim
its
exc
ava
tion
limits
excava
tion l
imits
294
294
292
298
296
300
294
308
308
secondary entrance
R3
Day 45 dBA
Night 33 dBA
Concrete Truck, spinning drum
Loader
Loader
Excavator
Excavator
Rock Drill
Crusher in 1
Concrete Trucks Haul Rte
Skid Steer
Screen/Wash Plant in 1
5/6 A
> 400 m
from R3
5/6 B
< 400 m
from R3
Concrete
Plant
Cement Powder Unloading
Cement Powder Barrier
5 m high
Barrier for truck loading
5 m high
Concrete Plant Berm
5 m high
Crusher Barrier in 1
697500
697500
697600
697600
697700
697700
697800
697800
697900
697900
698000
698000
698100
698100
698200
698200
698300
698300
698400
698400
698500
698500
698600
698600
4944800
4944800
4944900
4944900
4945000
4945000
4945100
4945100
4945200
4945200
4945300
4945300
4945400
4945400
4945500
4945500
4945600
4945600
Acoustic Assessment of the Dewdney Mountain Farms Quarry REPORT Township of Galway, Cavendish and Harvey 13 September 2011
P a g e | 27
HUGH WILLIAMSON ASSOCIATES INC.
Figure A1.7 Operations in Extraction Area 1 - Detail
inte
rmitt
ent stre
am
dry
old beaver damC15
L29
open area
exca
vatio
n lim
it pi
t bo
ttom
excava
tion lim
it pit b
ottom
exca
vation li
mit
pit
bottom
290
290
288Li
cens
e Bou
ndar
y
1drainage outlet with silt fence
drainage outlet with silt fence
water drainage way
water drainage way
292
285
exca
vatio
n lim
its
exca
vation li
mits
excava
tion lim
its
294
Loader
Loader
Excavator
Excavator
Rock Drill
Crusher in 1
Skid Steer
Screen/Wash Plant in 1
Crusher Barrier in 1
697450
697450
697500
697500
697550
697550
697600
697600
697650
697650
697700
697700
697750
697750
697800
697800
697850
697850
697900
697900
697950
697950
698000
698000
4945000
4945000
4945050
4945050
4945100
4945100
4945150
4945150
4945200
4945200
4945250
4945250
4945300
4945300
4945350
4945350
Acoustic Assessment of the Dewdney Mountain Farms Quarry REPORT Township of Galway, Cavendish and Harvey 13 September 2011
P a g e | 28
HUGH WILLIAMSON ASSOCIATES INC.
Figure A1.8 Operations in Extraction Area 2
290
285
285
305
C15
private
private
L27
C15
lotline
lotline
lotlin
e
L28
C14
open area
open area
intermittent pond
Ledge R
oad
Ledge R
oad
excavation l imit pit bottom
298 296
294 292
290 288
excavation l imit pit bottom
excavation l imit pit bottom
excavation l imit pit bottom
exca
vatio
n l im
it pit b
otto
m
exca
vatio
n l im
it pit b
otto
m
29
0
300
298 296
294
302
292
294
298 296
300 302
298 296
304
300 302
300
302
298
300
302
304
306
310
310
290
288
License Boundary
License Boundary
Lice
nse
Boundary
1
3
scale
fuel storage
office/maint shop
scrap storage
lotline
lotline
lotlin
e
2
4
6
308
water drainage way
water drainage way
water drainage way
scale house
Note: building locations conceptual only
7processing/storage area
UTM coord's
698190.7E
4944497.9N
UTM coord's
698222.6E
4944409.5N
UTM coord's
698582.8E
4944508.5N
UTM coord's
698875.4E
4944590.2N
UTM coord's
698643.1E
4945147.0N
300
292
BM
BM
295
28
5
300
excavation
l imits
excavation l imits
excavation l imits
excavation l imits
excavation l imits
exca
vatio
n l im
its
308
primary entrance
Concrete Truck, spinning drum
Crusher in 2
Crusher Barrier in 2Rock Drill
Loader
Loader
Excavator
Excavator
Concrete Trucks Haul Rte
Skid Steer
R5
Day 44 dBA
Night 32 dBA
4A
> 550 m
from R5
4B
< 550 m
from R5Screen/Wash Plant in 2
5/6 A
> 400 m
from R3
5/6 B
< 400 m
from R3
Concrete
Plant
Cement Powder Unloading
Cement Powder Barrier
5 m high
Barrier for truck loading
5 m high
Concrete Plant Berm
5 m high
697600
697600
697800
697800
698000
698000
698200
698200
698400
698400
698600
698600
698800
698800
4944400
4944400
4944600
4944600
4944800
4944800
4945000
4945000
4945200
4945200
Acoustic Assessment of the Dewdney Mountain Farms Quarry REPORT Township of Galway, Cavendish and Harvey 13 September 2011
P a g e | 29
HUGH WILLIAMSON ASSOCIATES INC.
Figure A1.9 Operations in Extraction Area 2 - Detail
285
intermittent pond
excavation limit pit bottom
excavation limit pit bottom
300
298 296
294
302
292
2
water drainage way
UTM coord's
698222.6E
4944409.5N
excavation limits
Crusher in 2
Crusher Barrier in 2Rock Drill
Loader
Loader
Excavator
Excavator
Skid Steer
Screen/Wash Plant in 2
697600
697600
697650
697650
697700
697700
697750
697750
697800
697800
697850
697850
697900
697900
697950
697950
698000
698000
698050
698050
698100
698100
698150
698150
4944400
4944400
4944450
4944450
4944500
4944500
4944550
4944550
4944600
4944600
4944650
4944650
4944700
4944700
4944750
4944750
4944800
4944800
Acoustic Assessment of the Dewdney Mountain Farms Quarry REPORT Township of Galway, Cavendish and Harvey 13 September 2011
P a g e | 30
HUGH WILLIAMSON ASSOCIATES INC.
Figure A1.10 Operations in Extraction Area 3 - Detail
305
lotline
306
310
Lice
nse
Boundary
scale
fuel storage
office/maint shop
scrap storage
lotline
6 3
08
scale house
Note: building locations conceptual only
7processing/storage area
BM
300
exca
vatio
n lim
its
Concrete Truck, spinning drumConcrete Trucks Haul Rte
4B
< 550 m
from R5
5/6 A
> 400 m
from R3
Concrete
Plant
Cement Powder Unloading
Cement Powder Barrier
5 m high
Barrier for truck loading
5 m high
Concrete Plant Berm
5 m high
Skid Steer
Rock Drill
Loader
Excavator
Loader Excavator
Berm or Lift face
698150
698150
698200
698200
698250
698250
698300
698300
698350
698350
698400
698400
698450
698450
698500
698500
698550
698550
698600
698600
698650
698650
698700
698700
4944700
4944700
4944750
4944750
4944800
4944800
4944850
4944850
4944900
4944900
4944950
4944950
4945000
4945000
4945050
4945050
4945100
4945100Boundary Berm
5 m high
3
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HUGH WILLIAMSON ASSOCIATES INC.
Figure A1.11 Operations in Extraction Area 4A - Detail
290
305
excavation limit pit bottom
exca
vatio
n lim
it pit b
otto
m
298 296
300 302
300
302
298
300
302
304
306
scale
fuel storage
office/maint shop
scrap storage
4
308
water drainage way
scale house
Note: building locations conceptual only
7processing/storage area
UTM coord's
698190.7E
4944497.9N
UTM coord's
698875.4E
4944590.2N
295
300
exca
vatio
n lim
its
excavation limits
exca
vatio
n lim
its
primary entrance
Concrete Truck, spinning drum
R5
Day 45 dBA
Night 38 dBA
4A
> 550 m
from R5
4B
< 550 m
from R5
Concrete
Plant
Cement Powder Unloading
Blower
Cement Powder Barrier
5 m high, 12 m long
< or = 3 m from blower
Barrier for truck loading
5 m high, 20 m long
< or = 5 m from centre of truck
Skid SteerRock Drill
Loader
Excavator
Loader
Excavator Berm or Lift face
Concrete Plant Berm
5 m high, 20 m long
698250
698250
698300
698300
698350
698350
698400
698400
698450
698450
698500
698500
698550
698550
698600
698600
698650
698650
698700
698700
698750
698750
698800
698800
4944500
4944500
4944550
4944550
4944600
4944600
4944650
4944650
4944700
4944700
4944750
4944750
4944800
4944800
4944850
4944850
4944900
4944900
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Figure A1.12 Operations in Extraction Area 4B - Detail
lotlineopen area
Ledge R
oad
excavation limit pit bottom
300
302
298
300
302
lotline
UTM coord's
698875.4E
4944590.2N
295
300
excavation limits
R5
Day 45 dBA
Night 37 dBA
4B
< 550 m
from R5
Berm or Lift face
Loader
Rock Drill
Excavator
698650
698650
698700
698700
698750
698750
698800
698800
698850
698850
698900
698900
4944550
4944550
4944600
4944600
4944650
4944650
4944700
4944700
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HUGH WILLIAMSON ASSOCIATES INC.
Figure A1.13 Operations in Extraction Area 5A - Detail
excavation limit p
it bottom
exca
vatio
n lim
it pi
t bot
tom
exc
ava
tion lim
it pit b
otto
m
exc
ava
tion lim
it pit b
otto
m
308
310
312
314
296 298
drainage outlet with silt fence
culvert
water drainage way
end of township maintained road
UTM coord's
BM
300
excavation limits
exc
ava
tion lim
its
dug well with
stone walls
5 A
> 400 m
from R3
5 B
< 400 m
from R3
Excavator
Loader
Excavator
Loader
Skid Steer
Rock Drill
Berm or Lift face
698100
698100
698150
698150
698200
698200
698250
698250
698300
698300
698350
698350
698400
698400
698450
698450
4945550
4945550
4945600
4945600
4945650
4945650
4945700
4945700
4945750
4945750
4945800
4945800
Boundary Berm 5 m high
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HUGH WILLIAMSON ASSOCIATES INC.
Figure A1.14 Operations in Extraction Area 5B – Detail
steel gate
steel gate
private
C14
L29
open area
intermittent pond
Ledge R
oad
exc
ava
tion lim
it pit b
otto
m
308
310
312
314
310
312 hunting camp5
dug well with wooden walls
end of township maintained road
exc
ava
tion lim
its
308
secondary entrance
R3
Day 45 dBA
Night 41 dBA
5 A
> 400 m
from R3
5 B
< 400 m
from R3
Loader
Excavator
Skid Steer
Berm or Lift face
698300
698300
698350
698350
698400
698400
698450
698450
698500
698500
698550
698550
698600
698600
698650
698650
4945450
4945450
4945500
4945500
4945550
4945550
4945600
4945600
4945650
4945650
Boundary Berm 5 m high
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HUGH WILLIAMSON ASSOCIATES INC.
Figure A1.15 Operations in Extraction Area 7 – Detail
305
exca
vatio
n lim
it pit b
otto
m
304
306
308
7exca
vatio
n lim
its
Concrete Truck, spinning drum
Concrete
Plant
Cement Powder Unloading
Blower
Cement Powder Barrier
5 m high, 12 m long
< or = 3 m from blowerBarrier for truck loading
5 m high, 20 m long
< or = 5 m from centre of truck
Concrete Plant Berm
5 m high, 20 m long
Rock Drill
Excavator
Loader
Skid Steer
Berm or Lift face
6 m high
698500
698500
698550
698550
698600
698600
698650
698650
698700
698700
698750
698750
4944750
4944750
4944800
4944800
4944850
4944850
4944900
4944900
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HUGH WILLIAMSON ASSOCIATES INC.
Figure A1.16 Example of Break in Berm at Secondary Entrance near R3 (if needed)
steel gate
private
C14
L29
open area
intermittent pond
Ledge R
oad
excavatio
n lim
it pit b
otto
m
308
310
310
312 hunting camp
dug well with wooden walls
excavatio
n lim
its
308
Secondary Entrance
R3
Day 44 dBA
Night 37 dBA
6 B
< 400 m
from R3
5 B
< 400 m
from R3
Boundary Berm
Boundary Berm
698350
698350
698400
698400
698450
698450
698500
698500
698550
698550
698600
698600
698650
698650
4945350
4945350
4945400
4945400
4945450
4945450
4945500
4945500
4945550
4945550
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Appendix 2
Acoustic Modeling Details
Modeling Notes:
1. Acoustic model developed uses Cadna-A software, Version 4.1.137.
2. Sound propagation is modeled according to ISO 9613-2: 1996(E).
3. So that worst case is represented in the modelling, all operations are assumed to take place at the original surface elevation.
4. The only significant receptors in terms of any need for mitigation are R3 and R5. The worst cases shown for each phase are situations where the equipment is closest to either R3 or R5.
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Appendix 2 Table A2.1 Calculation Configuration
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Appendix 2 Table A2.2 Point of Reception Location Table
Name ID Height Coordinates, ground
Above Ground
X Y Z
(m) (m) (m) (m)
#2413 Hunting Camp, Ritchie R1* 1.5 697672 4946558 292.0
Hunting Camp, Ledge Rd. R2* 1.5 698335 4946466 296.1
#2423 Hunting Camp R3* 1.5 698666 4945500 315.0
#2373 Hunting Camp, isolated R4 1.5 699666 4945194 317.0
#2287 Hunting Camp R5* 1.5 699083 4944477 306.0
#2183 Ledge Rd., Hunting Camp R6 1.5 699433 4943532 302.0
#2184 Ledge Rd., Hunting Camp R7 1.5 699316 4943440 301.7
Residence, Tully Rd. R8 1.5 697364 4942835 259.9
Hunting Camp, isolated R9 1.5 697085 4943509 267.0
Hunting Camp, isolated R10* 1.5 696887 4943804 257.0
Hunting Camp, White Valley Rd. R11 1.5 695101 4944779 273.7
Hunting Camp, Bass Lake Rd. R12* 1.5 695589 4945757 262.0
* Indicates a critical receptor for analysis purposes.
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Appendix 2
Table A2.3 Point Sources
Name Result. PWL Lw / Li Tonal Operating Time Direct. Height
Day Evening
Night Type Correction Day Special Night
(dBA) (dBA) (dBA) (dBA) (min/Hr) (min/Hr) (min/Hr) (m)
Excavator 1 115.2 115.2 115.2 Lw 0 60 0 0 (none) 3.0
Excavator 2 115.2 115.2 115.2 Lw 0 60 0 0 (none) 3.0
Loader 1 109.9 109.9 109.9 Lw 0 60 0 60 (none) 3.0
Loader 2 109.9 109.9 109.9 Lw 0 60 0 0 (none) 3.0
Skid Steer 108.9 108.9 108.9 Lw 0 60 0 60 (none) 1.5
Rock Drill 118.6 118.6 118.6 Lw 0 60 0 0 (none) 2.0
Crushing plant 120.5 120.5 120.5 Lw 0 60 0 0 (none) 3.0
Screen/Wash Plant 111.3 111.3 111.3 Lw 0 60 0 0 (none) 3.0
Concrete Truck, mixing 112.3 112.3 112.3 Lw 0 40 0 0 (none) 3.0
Cement Powder Unloading 123.7* 123.7* 123.7* Lw 5 20 0 0 (none) 2.0 * Includes tonal correction
Table A2.4 Line Sources
Name Point Source PWL Numbers of vehicles per hour Modelling Speed
Day Evening Night Day Evening Night
(dBA) (dBA) (dBA) (km/h)
Concrete Trucks Haul Rte 110.1 110.1 110.1 8 - 0 moving point source 20
Trucks Haul Rte 110.1 110.1 110.1 8 - 4 moving point source 20
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Appendix 2
Table A2.5 Noise Source Library
ID Type Spectra (dB) Source*
31.5 63 125 250 500 1000 2000 4000 8000 A lin
Loader Lw 103.4 110.4 114.1 113.6 107.1 104.1 97.2 91.2 83.6 109.9 118.5 Measured by HWA
Excavator_Dim_St Lw 106.4 115.6 114.4 114.8 109.8 109.9 109.1 103.1 93.7 115.2 121.1 Measured by HWA
Skid_steer Lw 103.6 119.4 108.1 109.3 106.7 103.2 100.3 95.7 86.3 108.9 120.5 Measured by HWA
Rockdrill_TH Lw 111.2 110.6 112.4 108.9 108.7 109.3 113.6 112.2 109.9 118.6 120.6 Measured by HWA
Crusher_73 Lw 114.4 118.3 120 117.5 117.9 116.2 113.1 105.3 94.9 120.5 125.8 Measured by HWA
Screening_Plant_2 Lw 109.6 115.3 118.4 108.8 107.4 106.2 103.7 96.7 90.6 111.3 121.2 Measured by HWA
HWYTruck_Slow58 Lw 115.9 112.7 110.2 101.6 101.4 105.0 104.2 97.6 103.5 110.1 119.0 Measured by HWA
Ready_Mix_High Lw 115.5 124.0 117.8 106.2 109.9 106.2 105.0 100.1 89.3 112.3 125.7 Measured by HWA
P_Cement_Unload Lw 104.1 107.9 120.3 116.2 109.5 110.2 111.8 113.6 104.6 118.7 123.4 Measured by HWA
* Measured by Hugh Williamson Associates at a similar facility or in similar circumstances in Ontario.
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Appendix 2
Table A2.6.1 Point of Reception Impacts by Source for Worst Cases, Day, Extraction Area 2
R1 R2 R3 R5 R10 R12
dBA dBA dBA dBA dBA dBA
Extraction Area 1
Concrete Truck, spinning drum 22.2 24.1 34.3 34.7 14.6 16.1
Cement Powder Unloading 25.0 27.1 36.0 31.6 25.2 18.4
Crusher 35.2 34.3 38.7 34.5 35.7 32.5
Screen/Wash Plant 24.4 25.0 29.4 25.7 26.4 23.5
Loader 27.4 27.3 31.3 24.6 22.7 19.8
Loader 27.6 27.4 31.2 24.5 22.6 20.0
Skid Steer 22.3 22.7 28.9 23.4 20.5 15.7
Excavator 30.7 30.6 35.6 28.8 26.6 22.9
Excavator 30.3 30.6 36.1 29.2 26.6 22.6
Rock Drill 28.6 29.1 36.3 28.9 25.4 20.1
Concrete Trucks Haul Rte 11.6 14.1 29.6 32.2 10.5 4.3
Trucks Haul Rte 21.5 22.3 34.1 33.5 20.4 14.5
Total 39 39 45 42 38 35
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Appendix 2
Table A2.6.2 Point of Reception Impacts by Source for Worst Cases, Day, Extraction Area 2
R1 R2 R3 R5 R10 R12
dBA dBA dBA dBA dBA dBA
Extraction Area 2
Concrete Truck, spinning drum 22.2 24.1 34.3 34.7 14.6 16.0
Cement Powder Unloading 25.0 27.1 36.0 31.6 25.2 18.4
Crusher 31.6 31.9 38.3 38.1 36.9 27.7
Screen/Wash Plant 22.0 22.3 31.2 31.6 27.8 18.6
Loader 21.1 21.9 30.7 29.9 25.1 17.0
Loader 21.3 22.1 30.9 29.7 25.1 17.1
Skid Steer 18.9 19.7 27.2 26.3 19.9 14.2
Excavator 24.3 25.2 35.8 34.4 28.5 19.9
Excavator 24.4 25.3 36.0 34.7 28.3 19.8
Rock Drill 23.0 24.1 36.8 33.9 26.9 17.6
Concrete Trucks Haul Rte 11.6 14.1 29.6 32.2 10.5 4.3
Trucks Haul Rte 17.2 18.9 32.6 33.7 19.3 11.2
Total 35 36 45 44 39 31
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Appendix 2
Table A2.6.3 Point of Reception Impacts by Source for Worst Cases, Day, Extraction Area 3
R1 R2 R3 R5 R10 R12
dBA dBA dBA dBA dBA dBA
Extraction Area 3
Concrete Truck, spinning drum 22.2 24.1 29.6 34.7 14.6 16.0
Cement Powder Unloading 25.0 27.1 29.6 31.6 25.2 18.4
Crusher 31.6 31.9 35.0 38.1 36.9 27.7
Screen/Wash Plant 22.0 22.3 28.3 31.6 27.8 18.6
Loader 22.5 24.3 34.0 32.3 22.2 16.3
Loader 22.7 24.4 34.0 31.7 22.1 16.4
Skid Steer 20.0 21.7 31.6 28.2 19.3 13.5
Excavator 26.0 28.2 38.4 36.2 25.2 19.3
Excavator 25.9 28.0 38.3 37.0 25.6 19.2
Rock Drill 24.9 26.7 35.8 35.8 23.3 16.9
Concrete Trucks Haul Rte 11.6 14.1 27.1 32.2 10.5 4.3
Trucks Haul Rte 16.2 18.3 30.0 33.4 15.5 8.9
Total 36 37 45 45 39 30
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Appendix 2
Table A2.6.4A Point of Reception Impacts by Source for Worst Cases, Day, Extraction Area 4A
R1 R2 R3 R5 R10 R12
dBA dBA dBA dBA dBA dBA
Extraction Area 4A
Concrete Truck, spinning drum 22.2 24.1 29.6 34.7 14.6 16.0
Cement Powder Unloading 25.0 27.1 29.6 31.6 25.2 18.4
Crusher 35.2 34.3 33.6 33.5 35.7 32.5
Screen/Wash Plant 24.4 25.0 29.4 25.7 26.4 23.5
Loader 20.6 22.4 31.2 34.4 22.1 15.2
Loader 20.7 22.6 31.5 34.5 21.9 15.2
Skid Steer 17.7 19.6 29.2 32.8 18.7 12.0
Excavator 24.0 26.0 35.7 37.5 25.4 18.0
Excavator 23.9 25.8 35.3 38.0 25.6 18.0
Rock Drill 22.2 24.5 36.1 34.7 23.3 15.3
Concrete Trucks Haul Rte 11.6 14.1 27.1 32.2 10.5 4.3
Trucks Haul Rte 12.6 15.0 27.5 33.4 12.7 5.6
Total 37 37 43 45 38 34
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Appendix 2
Table A2.6.4B Point of Reception Impacts by Source for Worst Cases, Day, Extraction Area 4B
R1 R2 R3 R5 R10 R12
dBA dBA dBA dBA dBA dBA
Extraction Area 4B
Concrete Truck, spinning drum 22.2 24.1 29.6 34.7 14.6 16.0
Cement Powder Unloading 25.0 27.1 29.6 30.1 25.2 18.4
Crusher 35.2 34.3 33.6 33.3 35.7 32.5
Screen/Wash Plant 24.4 25.0 29.4 25.7 26.4 23.5
Loader 19.9 22.0 30.8 36.2 19.0 14.2
Loader - - - - - -
Skid Steer - - - - - -
Excavator 23.1 25.4 35.2 39.0 21.6 17.0
Excavator - - - - - -
Rock Drill 21.1 23.7 35.2 37.5 19.2 14.1
Concrete Trucks Haul Rte 11.6 14.1 27.1 32.1 10.5 4.3
Trucks Haul Rte 12.4 14.9 27.5 34.6 12.3 5.3
Total 37 37 41 45 37 34
Note: Reduced operation in this area
Acoustic Assessment of the Dewdney Mountain Farms Quarry ACOUSTIC ASSESSMENT REPORT
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Appendix 2
Table A2.6.5A/6A Point of Reception Impacts by Source for Worst Cases, Day, Extraction Areas 5A & 6A
R1 R2 R3 R5 R10 R12
dBA dBA dBA dBA dBA dBA
Extraction Areas 5A and 6A
Concrete Truck, spinning drum 22.2 24.1 29.6 34.7 14.6 16.0
Cement Powder Unloading 25.0 27.1 29.6 31.6 25.2 18.4
Crusher 31.6 31.9 35.0 38.1 36.9 27.7
Screen/Wash Plant 22.0 22.3 28.3 31.6 27.8 18.6
Loader 29.1 33.5 34.9 25.1 19.0 17.3
Loader 29.3 34.8 34.6 24.9 18.8 17.2
Skid Steer 26.3 30.2 30.9 21.6 15.9 14.1
Excavator 33.2 38.6 36.4 28.3 22.1 20.2
Excavator 33.3 39.5 36.3 28.3 21.9 20.1
Rock Drill 32.6 37.3 34.3 26.0 20.2 17.9
Concrete Trucks Haul Rte 11.6 14.1 27.1 32.2 10.5 4.3
Trucks Haul Rte 23.1 27.0 36.9 33.5 17.2 12.6
Total 40 45 45 43 38 31
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HUGH WILLIAMSON ASSOCIATES INC.
Appendix 2
Table A2.6.5B/6B Point of Reception Impacts by Source for Worst Cases, Day, Extraction Areas 5B & 6B
R1 R2 R3 R5 R10 R12
dBA dBA dBA dBA dBA dBA
Extraction Areas 5B and 6B
Concrete Truck, spinning drum 22.2 24.1 29.6 34.7 14.6 16.0
Cement Powder Unloading 25.0 27.1 29.6 31.6 25.2 18.4
Crusher 31.6 31.9 35.0 38.1 36.9 27.7
Screen/Wash Plant 22.0 22.3 28.3 31.6 27.8 18.6
Loader 27.1 30.9 36.4 26.1 19.2 16.6
Loader - - - - - -
Skid Steer 23.8 27.6 35.5 24.4 16.2 13.3
Excavator 30.9 34.9 41.3 30.9 22.5 19.6
Excavator - - - - - -
Rock Drill - - - - - -
Concrete Trucks Haul Rte 11.6 14.1 27.1 32.2 10.5 4.3
Trucks Haul Rte 21.2 24.7 37.0 33.4 16.6 11.5
Total 36 39 45 43 38 30
Note: Reduced operation in this area
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Appendix 2
Table A2.6.7 Point of Reception Impacts by Source for Worst Cases, Day, Extraction Area 7
R1 R2 R3 R5 R10 R12
dBA dBA dBA dBA dBA dBA
Extraction Area 7
Concrete Truck, spinning drum 22.2 24.1 29.6 34.7 14.6 16.0
Cement Powder Unloading 25.0 27.1 29.6 31.6 25.2 18.4
Crusher 31.6 31.9 35.0 38.1 36.9 27.7
Screen/Wash Plant 22.0 22.3 28.3 31.6 27.8 18.6
Loader 21.4 23.6 33.8 36.1 21.0 15.0
Loader - - - - - -
Skid Steer 18.2 20.4 31.1 33.1 18.0 11.9
Excavator - - - - - -
Excavator 24.6 27.0 38.1 38.4 24.3 17.8
Rock Drill 22.7 25.6 38.9 36.5 14.6 14.9
Concrete Trucks Haul Rte 11.6 14.1 27.1 31.2 10.3 4.3
Trucks Haul Rte 8.9 11.5 25.5 29.1 6.0 1.5
Total 35 36 44 45 38 30
Note: Reduced operation in this area
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
KEY
COMPETENCIES: Environmental noise and vibration assessments, Certificates of Approval. 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, Trow Associates, HOK
Urbana Architects, Genivar, Nasittuq Corporation, PWGSC, R. W. Tomlinson, Bot Construction and
Miller Paving.