HomeMy WebLinkAboutCLD-033-11 MUNICIPAL Cladiwn REPORT
Meeting: GENERAL PURPOSE AND ADMINISTRATION COMMITTEE
Date: November 28, 2011 Resolution#: By-law#:
Report#: CLD-033-11 i e
Subject: RESULTS OF NOISE INVESTIGATION , ORONO FISH AND HUNT CLUB
RECOMMENDATIONS:
It is respectfully recommended that the General Purpose and Administration Committee
recommend to Council the following:
1. THAT Report CLD-033-11 be received; and
2. THAT all interested parties listed in Report CLD-033-11 be advised of Council's
decision.
Submitted by: Reviewed by:
Z i rie, Franklin Wu,
ici` al Clerk Chief Administrative Officer
PLB/LDC
CORPORATION OF THE MUNICIPALITY OF CLARINGTON
40 TEMPERANCE STREET, BOWMANVILLE, ONTARIO L1C 3A6 T 905-623-3379
REPORT NO.: CLD-033-11 PAGE 2
1. BACKGROUND
At the General Purpose and Administration Committee meeting held on September 12,
2011 Resolution GPA-556-11 was passed, authorizing the expenditure of up to
$5,800.00 to retain the services of Swallow Acoustic Consultants Ltd. (SACL) to
determine the current sound levels of operations at the Orono Fish and Hunt Club.
Staff attended a number of properties on September 20 and October 6 in the company
of Aaron Wood of SACL. Mr. Wood is an Engineer and he was in attendance to take
sound readings from surrounding properties to determine whether or not the existing
sound levels of the Club meet or exceed the permitted 70 dBAI limit established in
By-law 2001-071, as amended.
2. INVESTIGATION
For the purposes of obtaining sound readings staff and Mr. Wood attended six
properties and obtained readings while the RCMP was conducting their training
exercises. The community members who spoke at the Mediation meeting held on
August 16t" had identified the level of noise emanating from the RCMP training as being
the most disturbing. The properties where the readings were taken are indicated on the
map attached to this report as Page 6 of Attachment#1.
3. DIFFERING INTERPRETATIONS
SACL raised a concern with the difference in the wording between the Clarington Noise
By-law and the standard as set out in the Ministry of the Environment's publication
NPC-232 "Sound Level Limits for Stationary Sources in Class 3 Areas (Rural), October
1995".
Section 3.1.1 of the By-law states that:
"During non-curfew times, any noise emanating from the use of a shooting range
shall not exceed:
(a) 70 dBAI at the point of reception for any shooting range which
began operation prior to January 1st 1980 or(b) 50 dBAI at the
point of reception for any shooting range which began operation
after January 1 st 1980."
while Section 8.(2) of the MOE noise publication states that:
"For impulsive sound...from a stationary source which is the discharge of
firearms on the premises of a licensed gun club, the sound level limit at a point of
reception within 30 m of a dwelling or a camping area, expressed in terms of the
Logarithmic Mean Impulse Sound Level (LLM), is...70 dBAI if the gun club were
operating before January 1, 1980..."
REPORT NO.: CLD-033-11 PAGE 3
The subtle difference between the two documents is that Clarington's by-law sets a
maximum permitted noise level of 70 dBAI. The MOE standard can be interpreted that a
single impulsive sound occurrence can exceed the maximum level of 70 dBAI as long
as the average over a number of readings does not exceed 70 dBAI limit.
The more stringent 70 dBAI limit in the Clarington by-law was applied to assess the
compliance.
4. RESULTS
The initial results of the readings showed that two of the test sites minimally exceeded
the permitted limit, however when these readings were extrapolated to provide a "Worst
Case Scenario" the numbers increased into the mid 70s for three of the test properties
(ie, one additional property).
In their report, SACL provides two possible solutions:
1. Limit the number of shooters at any one time to no more than three people; or
2. Construct acoustic barriers or berms along the north, east and south boundaries
of the property. These barriers would vary in height from 2 metres along the
south property line to a maximum of 5 metres on the north-east.
The Orono Fish and Hunt Club have indicated that they are prepared to proceed with
the second solution noted above. Their intent is to purchase the unopened road
allowance which runs north and south along the east side of their property. Once the
land is acquired they will construct a berm of sufficient size to reduce and contain the
noise.
The Club is currently in discussion with Engineering Services to acquire the land. The
following items have already been completed:
➢ The formal Application for Road Closure and Conveyance has been received.
➢ Consent for the proposed closure from all other property owners situated
adjacent to the subject road allowance has been obtained.
➢ The application fee of$250 has been paid.
➢ The plan of survey required to prepare the deed has been received.
➢ All municipal departments, other governments and outside agencies have now
endorsed the road closure in principle.
➢ Initial formal approval from Municipal Council has been obtained.
REPORT NO.: CLD-033-11 PAGE 4
The following items remain outstanding:
➢ The Municipality will require payment of$3,500 + HST for the cost of an
appraisal of the land value. The appraisal will be prepared by a certified property
appraiser who has been retained by the Municipality.
➢ The Municipality must advertise the proposed road closure in local newspapers.
➢ The Municipality must prepare by-laws to legally close the road and convey
ownership.
➢ Payment for the land value as well as all legal, advertising and other costs
associated with the closure and conveyance must be paid to the Municipality.
➢ The Club must retain the services of a lawyer to complete the final land transfer.
➢ The Club must pay any land transfer tax.
➢ The Club must complete any other terms or conditions deemed necessary by the
Director of Engineering Services.
5. CONCURRENCE
This report has been reviewed by Andy Allison, Municipal Solicitor and Tony Cannella,
Director of Engineering Services, who concur with the recommendations.
6. CONCLUSION
The results of the Noise Study have shown that there is a problem which must be dealt
with by the Orono club. As noted above, they have indicated a willingness to work to
correct the problem. Should that not occur, staff are prepared to initiate proceedings
against the Club.
CONFORMITY WITH STRATEGIC PLAN — Not Applicable
Staff Contact: Len Creamer, Manager, Municipal Law Enforcement
Attachments:
Attachment 1 - Swallow Noise Report
REPORT NO.: CLD-033-11 PAGE 5
List of interested parties to be advised of Council's decision:
Ard Neiman
Ron Alldred, President, Orono Fish and Hunt Club
Tony Bernardo
Karen McArthur
Nancy Wilson
Alan Risebrough
Elizabeth MacLeod
Bruce Blight
Rick Roddy, President, Union Rod & Gun Club
Brady Hooker, Vice-President, Union Rod & Gun Club
Kelly Adams
Steve Cody
Shelly Richards
Lynne & Sue Richards
Ron Kirst, Canadian Pacific Railway Police
Tammy Gould
Paul and Sharon Young, Union Rod & Gun Club
Orono Fish and Hunt Club
The Marksmen Club
Jeremy Ross
Dianne Vetzal
Mike Box
Dean Link
Keith Linton
Tammy Gould
Anne Ball
Al Risebrough
Greg Farrant, Ontario Federation of Anglers & Hunters
SWALLY)W Attachment No. 1 to
Report CLD-033-11
Noise Study Report
Gun Club
3292 Concession Road 7
Clarington, Ontario
Prepared for
The Municipality of Clarington
40 Temprence Street
Bowmanville, ON L1C 3A6
Prepared by
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V on Wood,M.Eng.
Approved by
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'40 w, M.A.Sc., P.Eng. ,
Swallow Acoustic Consultants Ltd.
366 Revus Avenue,Unit 23
Mississauga,ON L5G 4S5
T: 905-271-7888, lac 905-2714846
November 8, 2011
11128
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Table of Contents
1. Introduction......................................................................................................................... 1
2. Facility Description............................................................................................................. 1
3. Noise Sources...................................................................................................................... 1
4. Points of Reception............................................................................................................. 2
5. Sound Level Limit .............................................................................................................. 2
6. Sound Level Measurements................................................................................................ 3
7. Worst-case Scenario............................................................................................................ 3
8. Noise Impacts at Critical Receptors.................................................................................... 3
I
9. Noise Control Measure .......................................................................................................4
10. Conclusion .......................................................................................................................... 5
Figure 1 : Locations of Gun Club and PORs ............................................................................ 6
Figure2: Gun Club Layout.......................................................................................................... 7
Figure 3: 12 Targets of 25-metre Range.................................................................................. 8
Figure 4: 10 RCMP Shooting Positions.................................................................................... 9
Figure 5: RCMP Officers Shooting Together......................................................................... 10
Figure 6: Barrier Heights and Locations................................................................................. 11
Appendix A: Clarington By-law and MOE Noise Guideline................................................. 12
Appendix B: Measurements Raw Data................................................................................... 17
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1. INTRODUCTION
The Municipality of Clarington has retained the services of Swallow Acoustic Consultants Ltd
(SACL) to prepare an Acoustic Assessment Report for an existing gun club at 3292 Concession
Road 7 in Clarington, Ontario. The area surrounding the site is generally farm lands. There are
residences around 600 metre away at the northeast and south of the gun club. An area map
showing the location of the gun club is provided in Figure 1.
The assessment was required by the Municipality to assist in investigating the noise complaints
filed against the gun club operation.
2. FACILITY DESCRIPTION
The gun club is located approximately 700 metres north of Concession Road 7, and 600 metres
east of Leskard Road. The gun club is approximately 140 meters in length (north to south) and
110 meters in width (east to west). A map showing the layout of the gun club is provided in
Figure 2. It includes a 25-metre range, a 50-metre range, a 100-metre range, and a trap shooting
area near the centre of the gun club. The 25-metre one has 12 shooting targets, the most among
the 3 ranges. The 12 targets are shown in Figure 3.
With regard to the noise complaints, SACL learned the following information from the
Municipality;
1) The gun club has been operated since 1960s;
2) The nearby residents used to tolerate the noise from the gun club, until
3) In recent years since the gun club hosted RCMP shooting training.
4) The residents complained that the RCMP shooting training was significantly more
annoying than the operation of the gun club before its hosting the training, because the
training often involved a team of officers shooting simultaneously, rather than amateurs
shooting separately.
3. NOISE SOURCES
SACL conducted site visits on September 20 and October 6, 2011. There were about 20 RCMP
officers on site for training sessions on September 20 and 14 officers on October 6. Each day
they were divided into two teams,
On September 20, SACL staff eye-witnessed one team was for shooting which occupied 8 of the
10 shooting positions of a range. A photo of the 10 shooting positions is provided as Figure 4. A
photo of officers in shooting positions is provided in Figure 5. The other team was out of the
shooting ranges, conducting non-shooting training activities. The major noise sources were
officers firing their pistols simultaneously.
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On October 6, SACL staff heard the sound of shooting while measuring noise impact at
residences along Leskard Road and Concession Road 7. When SACL staff arrived at the gun
club around lunch time, the officers were having their snacks. SACL learned the number of
officers and the dividing them into two teams from conversing with an RCMP officer on site.
4. POINTS OF RECEPTION
The critical points of reception (PORs), where the noise impacts are expected to be greatest,
occurs at the nearest noise sensitive land use. We learned from the Municipality of Clarington
that the residents of the PORs in Table 1 complained most of the noise from the gun club. The
locations of the PORs are also indicated in Figure 1.
Table 1: PORs
ID Address Distance to Note
Gun Club m
POR1 7506 Leskard Road 520 Backyard, 30 metres from the house
POR2 7580 Leskard Road 610 Backyard, 30 metres from the house
POR3 7606 Leskard Road 620 Backyard,30 metres from the house
POR4 7782 Leskard Road 1050 Backyard, property line,20 metres from the house
POR5 7685 Leskard Road 840 Front yard, 30 metres from the house
POR6 3283 Concession Road 7 630 Backyard, 30 metres from the house
5. SOUND LEVEL LIMIT
Section 3.1.1 of the Corporation of the Municipality of Clarington By-law 2011-068 states that:
During non-curfew times, any noise emanating from the use of a shooting range shall not
exceed: (a) 70 dBAI at the point of reception for any shooting range which began
operation prior to January 1" 1980 or (b) SO dBAI at the point of reception for any
shooting range which began operation after January 1st 1980.
Section 8.(2) of the Ontario Ministry of the Environment noise publication NPC-232 "Sound
Level Limits for Stationary Sources in Class 3 Areas (Rural), October 1995" states that:
For impulsive sound...from a stationary source which is the discharge of firearms on the
premises of a licensed gun club, the sound level limit at a point of reception within 30 m
of a dwelling or a camping area, expressed in terms of the Logarithmic Mean Impulse
Sound Level(LLM), is...70 dBAI if the gun club were operating before January 1, 1980...
There is a subtle difference between the 70 dBAI in Clarington by-law and MOE noise
publication. The wording of "shall not exceed...70 dBAI" can be interpreted that it is the
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maximum impulsive sound level that is allowed by the by-law. The wording of "Logarithmic
Mean Impulse Sound Level (LLM), is...70 dBAI" can be interpreted that a single impulsive sound
occurrence can exceed the maximum level of 70 dBAI as long as the "logarithmic mean (a type
of averaging algorithm) impulse sound level" meets the 70 dBAI limit. Alternatively speaking,
the limit is Clarington by-law can be interpreted to be more stringent than the MOE limit.
The more stringent 70 dBAI limit in the Clarington by-law is selected to assess the compliance.
A copy of the by-law and two pages of the MOE NPC-232 are provided in Appendix A.
G. SOUND LEVEL MEASUREMENTS
6.1 Instrumentation
Sound level measurements were taken in the afternoon of September 20, 2011 and in the
morning of October 6, 2010 with a Bruel & Kjaer hand-held analyzer type 2250, serial number
2630269. It was calibrated before and after measurements with a Bruel & Kjaer sound calibrator
type 4231, serial number 2623794. A wind shield was used during all outdoor measurements.
6.2 Meteorology
There was no precipitation during site visits. The wind was less than 5 kilometers per hours. The
temperature was about 20 degree Celsius during September 20 site visit, about 15 degree Celsius
during October 6 site visit. The atmospheric pressure was about 100 kilopascals. The humidity
was about 80%.
63 Measurements
Sound level measurements were taken at the gun club at about 100 meters behind 8 RCMP
officers firing pistols simultaneously and at about 20 meters behind one officer firing one pistol
for 20 shots. Sound level measurements were also taken at critical receptors POR1-6.
7. WORST-CASE SCENARIO
We assume that the worst-case scenario is 12 RCMP officers shooting simultaneously because
(a) the range with most targets have 12 targets, consequently 12 shooting positions; (b) the
RCMP shooting noise is the most complained activity; and (c) due to safety concerns, there will
be no other shooting while RCMP training is underway.
8. NOISE IMPACTS AT CRITICAL RECEPTORS
The maximum impulsive sound levels measured at critical receptors during RCMP officers'
shooting are listed in Table 2.
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Table 2: Maximum Impulsive Sound Levels at PORs
Location Measurement dBAI Worst-case Prediction dBAI Compliance
POR1 66.7 69.7 Yes
POR2 71.1 74.1 No
POR3 65.0 68.0 Yes
POR4 66.8 69.8 Yes
POR5 72.4 75.4 No
PORE 69.9 72.9 No
For each location in Table 2, the maximum impulsive sound level of the worst-case prediction is
3 dB higher than that of the measurement. The reason for the 3 dB difference is explained below.
Sound level measurements were taken at the site of the gun club on September 20, 2011. The
measured maximum impulsive sound levels are listed in Table 3.
Table 3: Maximum Impulsive Sound Levels Gun Club
ID Distance m Level dBAI Note
L1a 98 101.0 Measured behind 8 RCMP officers shooting simultaneous)
L2a 21 105.1 Measured behind 1 RCMP officers firing 20 shots continuous)
L1 b 100 100.8 L1 a ex olated to 100 meters
L2b 100 91.5 L2a expolated to 100 meters
It can be seen in Table 3 that the difference between Llb and L2b is 9.3 dBAI, which
corresponds well with the relationship that doubling the number of same sources will increase
the sound level by 3 dB at same distance under same acoustical condition; reversely, halving the
number of same sources will reduce the sound level by 3 dB at same distance under same
acoustical condition.
During the site visit on October 6, 2011, SACL staff learned that there were 14 officers equally
divided into 2 teams, each with 7 officers. We assumed that there were 5 to 6 officers in a team
firing simultaneously, with 1 or 2 officers in the team as instructors. Since the 25-meter range in
the club has 12 shooting positions, we assume that in Table 2 the predicted worst-case sound
levels should be approximately 3 dB higher than those of measurements.
9. NOISE CONTROL MEASURE
Since there is non-compliance in Table 2, we recommend the gun club choose either of the
following noise control options.
Option 1:Acoustic Barriers
Acoustic barriers or berms shall be built along the north, east and south boundaries of the
gun club to fully block the line-of-site between the gun club and POR1-6. The acoustic
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barriers shall made of durable material, with minimum surface density of 20 kg/m2,
structurally sound, appropriate to wind and snow load, designed and constructed without
cracks or gaps. Any gaps under the barriers necessary for drainage purpose shall be
minimized and localized. The recommended locations and minimum heights of the
barriers in Fib are based on elevations of the gun club and POR1-6 in Google Earth,
It is recommended that when elevation information or contour maps of the study area are
available from another source, they should be submitted to an acoustical consultant for
review.
Option 2; Operational Changes
No more than 3 people in the shooting range shall fire their guns simultaneously.
Preferably they should fire consecutively, one after one. The reasoning for this option is
explained below:
As stated in the last paragraph of Section 8, it was assumed that 5 to 6 officers in a team
firing simultaneously during the site visit on October 6, 2011. The highest impulsive sound
level measured during site visit is 72.4 dBAI at POR5, which is less than 3 dB higher than
the limit of 70 dBAI, By reducing the number of people firing simultaneously to 3 (about
half of the assumed 5 to 6 officers), the sound levels at PORs are expected to be lowered
by approximately 3 dB as described in the last second paragraph of Section 8.
10. CONCLUSION
SACL conducted a noise study of the gun club at 3292 Concession Road 7, Clarington, Ontario.
Based on measured sound levels (see Table 2 in Section 8) at critical receptors regarding the
impulsive sound of the most complained RCMP officers' firing pistols together, it is predicted
that noise impacts will not be totally in accordance with the sound level limit of 70 dBAI in the
Clarington By-law 2011-068, under worst-case scenario (described in Section 7). Therefore it is
recommended that the noise control measure (described in Section 9) should be implemented.
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Figure 3: 12 Targets of 25-metre Range
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Appendix A: Clarington By-law and MOE Noise Guideline
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THE CORPORATION OF THE MUNICIPALITY OF CLARINGTON
BY-LAW 2011-068
Being a By-law to amend Noise By-law 2007-071
WHEREAS Section 129 of the Municipal Act, 2001, S.O.2001, Chapter 25 states
that a local municipality may prohibit and regulate noise;
AND WHEREAS The Council of the Corporation of the Municipality of Clarington
deems it appropriate to amend By-law 2007-071,which is a by-law to regulate
noise levels within the Municipality of Clarington;
NOW THEREFORE the Council of the Corporation of the Municipality of
Clarington enacts as follows:
1. Section 1.1 of By-law 2007-071 is deleted in its entirety and replaced with
the following:
No person shall ring any bell, blow or sound any horn or cause
the same to be rung, blown or sounded, or shout or create,
cause or permit any unusual or excessive noises which, at the
point of reception,are likely to disturb any other inhabitant of the
Municipality of Clarington.
2. Section 3.1 of By-law 2007-071 is deleted in its entirety and replaced with
the following:
3.1 A noise curfew shall apply to the following shooting ranges
within the Municipality of Clarington:
(a) the Orono Fish and Hunt Club;
(b) the Union Rod and Gun Club;and
This curfew shall be from 9:00 p.m. until 8:00 a.m.the
following day(Monday through Saturday), 9:00 p.m.
Saturday until 10:00 a.m. Sunday, and 4:00 p.m.Sunday
until 8:00 a.m. Monday.
3.1.1 During non-curfew times, any noise emanating from the use of a
shooting range shall not exceed:
(a) 70 dBAI t the point of reception for any shooting range
which began operation prior to January 15t 1980;or
(b) 50 dBAI at the point of reception for any shooting range
which began operation after January 15t 1980.
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3.1.2 Notwithstanding section 3.1 above, all approved indoor shooting
ranges within the Municipality shall be exempt from the noise
curfew.
3. Section 3.3 of By-law 2007-071 is deleted in its entirety and replaced with
the following:
3.3 A noise curfew shall apply to any noise from any excavation or
construction work whatsoever, including the erection,demolition,
alteration or repair of any building from 9:00 p.m. until 7:00 a.m.
the following day,(Monday through Saturday), 9:00 p.m.
Saturday until 10:00 a.m.Sunday, and from 4:00 p.m. Sunday
until 7:00 a.m. Monday.
3,3.1 For the purposes of this by-law, noise related to construction
work shall be interpreted to include the starting, idling and
warming up of any truck or mechanically powered excavation or
earth moving equipment,
3.3.2 Noises emanating from the operations described in sections 3.3
and 33.1 shall not be considered to be a violation under this by-
law when said operations are carried on outside the time periods
set out by a curfew.
3.3.3 Notwithstanding any other provision to contrary, appropriate staff
may authorize construction work to be carried on outside the
curfew restrictions set out in this By-law only in the case of
urgent necessity and then only under prior authorization from
appropriate staff.
4. The provisions of this by-law shall come into full force and effect on the
19th day of September 2011.
BY-LAW read and passed in open session this 4`h day of July,2011
A. Foster, Mayor
Patti L. Barrie, Municipal Clerk
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(SD Ontario
MINISTRY OF THE ENVIRONMENT
(2) Approval of Stationary Sources
The One Hour Equivalent Sound Level (Lea)and/or the Logarithmic Mean Impulse Sound Level(LAM)
produced by the stationary sources shall be obtained by measurement or prediction.The estimation of
the LeQ and/or LLm of the stationary source under impact assessment shall reflect the principle of
"predictable worst case"noise impact. The"predictable worst case"noise impact occurs during the hour
when the difference between the predicted sound level produced by the stationary source and the
background sound level of the natural environment is at a maximum.
6. PROCEDURES
All sound level measurements of the One Hour Equivalent Sound Level(LeQ)and the Logarithmic Mean Impulse
Sound Level(LLM)shall be made in accordance with Reference[3].
All sound level measurements of the One Hour Ninetieth Percentile Sound Level (L,)shall be made using a
Sound Level Meter capable of measuring percentile sound levels. The meter shall meet the applicable
requirements for an Integrating Sound Level Meter of Reference[2]. The measurements shall be carried out
following procedures for the measurement of varying sound described in Reference[3].
Sound from existing adjacent stationary sources may be included in the determination of the background hourly
sound levels L and Lg,;if such stationary sources are not under consideration for noise abatement by the
Municipality or tie Ministry of Environment and Energy.
7. SOUND LEVEL LIMITS-GENERAL
(1) For impulsive sound,other than Quasi-Steady Impulsive Sound,from a stationary source,the sound
level limit at a point of reception within 30 m of a dwelling or a camping area,expressed in terms of the
Logarithmic Mean Impulse Sound Level(LL,),is the lower of:
• the background One Hour Equivalent Sound Level(LeQ)obtained pursuant to Section 5;and
• the background One Hour Ninetieth Percentile Sound Level (L.)plus 15 dB,i.e.Lw+15 dB,
obtained pursuant to Section 5.
(2) For sound from a stationary source, including Quasi-Steady Impulsive Sound but not including other
impulsive sound,the sound level limit at a point of reception within 30 m of a dwelling or a camping
area,expressed in terms of the One Hour Equivalent Sound Level(LeQ), is the lower of:
• the background One Hour Equivalent Sound Level (LeQ)obtained pursuant to Section 5;and
• the background One Hour Ninetieth Percentile Sound Level(1-90)plus 10 dB,i.e. L.+10 dB,
obtained pursuant to Section 5.
8. SOUND LEVEL LIMITS-SPECIFIC IMPULSIVE SOUNDS
(1) For impulsive sound,other than Quasi-Steady Impulsive Sound,from a stationary source which is an
industrial metal working operation(including but not limited to forging,hammering,punching,stamping,
cutting,forming and moulding),the sound level limit at a point of reception within 30 m of a dwelling or
a camping area,expressed in terms of the Logarithmic Mean Impulse Sound Level(LAM),is 60 dBAI,if
the stationary source were operating before January 1, 1980,and otherwise is 50 dBAI.
(21 For impulsive sound,other than Quasi-Steady Impulsive Sound,from a stationary source which is the
discharge of firearms on the premises of a licensed gun club,the sound level limit at a point of reception
within 30 m of a dwelling or a camping area,expressed in terms of the Logarithmic Mean Impulse Sound
Level(LAM),is:
Publication NPC-232 -6- October 1995
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(5)Ontario
MINISTRY OF THE ENVIRONMENT
• 70 dBAI if the gun club were operating before January 1, 1980;or
• 50 dBAI if the gun club began to operate after January 1, 1980;or
• the LLM prior to expansion,alteration or conversion.
(3) For impulsive sound,other than Quasi-Steady Impulsive Sound,from a stationary source which is not
a blasting operation in a surface mine or quarry,characterized by impulses which are so infrequent that
they cannot normally be measured using the procedure for frequent impulsesof Reference[3],the sound
level limit at a point of reception within 30 m of a dwelling or a camping area,expressed in terms of the
impulse sound level,is 100 dBAL
9. SOUND LEVEL LIMITS-PEST CONTROL DEVICES
(1) For impulsive sound,other than Quasi-Steady Impulsive Sound,from a pest control device employed
solely to protect growing crops,the sound level limit at a point of reception within 30 m of a dwelling or
a camping area,expressed in terms of the Logarithmic Mean Impulse Sound Level(LAM),is 70 dBAI.
(2) For sound,including Quasi-Steady Impulsive Sound but not including other impulsive sound,from a pest
control device employed solely to protect growing crops,the sound level limit at a point of reception
within 30 m of a dwelling or a camping area, expressed in terms of the One Hour Equivalent Sound
Level(L,), is 60 dBA.
10. PROHIBITION-PEST CONTROL DEVICES
The operation of a pest control device employed solely to protect growing crops is prohibited during the hours
of darkness,sunset to sunrise.
11. PRE-EMPTION
The least restrictive sound level limit of Sections 8,9 and 10 applies.
12. EXCLUSION
No restrictions apply to any stationary source resulting in a One Hour Equivalent Sound Level (L,) or a
Logarithmic Mean Impulse Sound Level(L,M),at a point of reception within 30 m of a dwelling or a camping area,
lower than the minimum values for that time period,as specified in Table 232-1.
TABLE 232-1
Minimum Values of One Hour L g or LL by Time of Day
Time of Day One Hour L,(dBA)or LAM (dBAI)
0700-1900 45
1900-2300 40
2300-0700 40
May 21,1999
Publication NPC-232 -7- October 1995
Swallow Acoustic Consultants Ltd. Nov 2011
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SWALLVW
Acoustics, Noise&Vibration Control
Clarington_Gun (81-128) Page 17
Appendix B: Measurements Raw Data
No. Lmax dBAI Address Note Date
1 101.0 3292 Concession Rd 7 8 officers shooting together Se t 20,2011
2 99.4 3292 Concession Rd 7 8 officers shooting together Sept 20, 2011
3 105.1 3292 Concession Rd 7 1 officer firing 20 shots Sept 20, 2011
4 66.7 7506 Leskard Rd POR1 Se t 20,2011
5 55.9 7506 Leskard Rd POR1 Sept 20,2011
6 69.9 3283 Concession Rd 7 PORE Sept 20,2011
7 61.3 3283 Concession Rd 7 PORE Sept 20,2011
8 68.2 7580 Leskard Rd POR2 Oct 6,2011
9 70.7 7580 Leskard Rd POR2 Oct 6,2011
10 71.1 7580 Leskard Rd POR2 Oct 6,2011
11 60.2 7606 Leskard Rd POR3 Oct 6, 2011
12 65.0 7606 Leskard Rd POR3 Oct 6, 2011
13 59.2 7782 Leskard Rd POR4 Oct 6, 2011
14 65.9 7782 Leskard Rd POR4 Oct 6,2011
15 66.8 7782 Leskard Rd POR4 Oct 6,2011
16 65.1 7685 Leskard Rd POR5 Oct 6,2011
17 72.4 7685 Leskard Rd POR5 Oct 6,2011
18 65.1 7685 Leskard Rd POR5 Oct 6,2011
19 53.4 3283 Concession Rd 7 POR6 Oct 6,2011
20 57.0 3283 Concession Rd 7 PORE Oct 6,2011
21 57.2 3283 Concession Rd 7 PORE Oct 6, 2011
The End
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Swallow Acoustic Consultants Ltd. Nov 2011