HomeMy WebLinkAboutSOUTH FORT COLLINS VETERINARY CENTER PUD FINAL - 46 91A - SUBMITTAL DOCUMENTS - ROUND 1 - SUPPORTING DOCUMENTATIONELMFIELD VETERINARY CENTER & PET LODGE
SECTION "B" THROUGH "D" SOUND LEVEL SURVEY
DATE: December 23, 1991
CONDUCTED BY: Peter D. Cappel of MCA Environmental, Inc.
A sound level survey was conducted at Elmfield Veterinary Center
and Pet Lodge in Denver, Colorado, between 7.:30 a.m. and 8:30
a.m. The survey was conducted utilizing a Quest M-27 sound level
meter calibrated for Denver conditions.
The kennel is arranged in a 'IT" shape. There are four sections
to the kennel, identified as A through D. Refer to attachment
one.
The intent of this study was to measure the noise levels
generated by the dogs barking who were kenneled in the southern
most wing of the kennel. The south wing of the kennel is made up
of sections B through D. The south wing's south side has forty
kennels. At the time of the survey the south wing was completely
full. Each individual dog run is arranged so that approximately
six feet of the run is inside the building and approximately .
twelve feet of the run is outdoors. The outdoor portions are
constructed of chain link fence sides and a corrugated steel
roof. The indoor and outdoor portions are divided with a cinder
block wall with a two foot square dog door which slides up and
down manually. Approximately twenty feet south of the end of the
runs of the south wing is a six foot high solid wood fence that
runs east -west along the entire property line. The area between
the runs and fence is sodded. Past the fence is an open space
approximately 400 feet wide that follows a creek. The open is vegetated vegetated with low lying plants. On the far south side of the
open space are residential properties.
The study was conducted in two phases. Phase one was conducted
while all the dogs in the south wing were locked indoors. Phase
one is representative of sound levels present at night when the
dogs are kenneled indoors with the dog doors closed. Phase two
was conducted while all the dogs were locked outdoors.
Outdoor measurements were taken on the
wing along a line perpendicular to the
Refer to attachment two for approximate
level measurements were taken.
1
south side of the south
center of the south wing.
locations were sound
The following table gives a description of each location from
where the sound level measurements were taken and the maximum
sound level at that location with the dogs barking and not
barking. The table is broken into two halves. The first half is
the sound level measurements when the dogs were locked indoors
and the second half is the sound levels when the dogs were locked
outdoors.
LOCATION/DESCRIPTION MAXIMUM SOUND LEVEL (dBA
BARKING NOT BARRING
PHASE I (Dogs Indoors)
Inside kennel three feet
from runs in corridor
Outdoors at chain link
fence immediately out-
side of runs
Three feet from solid'wood
fence on north side
Three feet from solid wood
fence on south side
100 feet south
of dog runs
150 feet south
of dog runs
200 feet south
of dog runs
250 feet south
of dog runs
Inside one foot away from
face of dog at dogs head level
2
85 65
70 50.5
69 51
52 50.5
50.5 50.5
50.5 50.5
50.5 50.5•
50.5 50.5
100 -
Table continued
LOCATION/DESCRIPTION MAXIMUM SOUND LEVEL (dBA)
BARRING
NOT BARKING
PHASE II (Dogs Outdoors)
Outdoors at chain link
91.
66
fence immediately outside of runs
Three feet from solid wood
83
61
fence on north side
Three feet from solid wood
78
58
fence on south side
100 feet south
66
50.5
of dog runs
150 feet south
64
50.5
of dog runs
200 feet south
55
50.5
of dog runs
250 feet south
50.5
50.5
of dog runs
The readings in phase II, while the dogs were barking and locked
outdoors, gives a worst case scenerio. When these measurements —
were taken the majority of the dogs were barking because they
were encouraged to do so by a person exciting them by making
strange noises. It was noted during the survey that it was
typical for only several dogs, not all dogs, to be barking unless
something was exciting the dogs. The data illustrates that the
noise of the dogs barking decreases with distances. It was noted
within 100 feet south of the dog runs when only several dogs were
barking that the sound level was at 50.5 dBA.
A number of measurements were taken through out the neighborhood
to establish a background sound level range typical for that
area. The area consisted only of single family dwellings, one
and two story houses, aside from the veterinary center. The
background readings ranged from 50 dBA to 60 dBA. These
3
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measurements were taken when no dogs in the immediate area,
either at the kennel or at private residences, were barking.
These readings were taken in the early morning hours between 7:30
a.m. and 8:30 a.m. There was relatively low activity in the area
at the time, such as, few people outdoors and light automobile.
traffic.
On the south side of the kennel there is a slight slope towards
the creek. Because the wood fence is twenty feet from the runs
and positioned down hill the fence only stands about three to
four feet higher than the.floor of the kennel. It was noted
during the survey that several dogs when standing on their hind
legs, were in line of sight with the sound level meter. If the
fence stood higher it might act to better ..reduce the noise level
beyond the fence away from the kennel.
On the side of the building with the exposed kennels the South
Fort Collins Veterinary Center PUD is proposing to incorporate a
solid wood fence at a distance of six feet from the dog runs. In
addition there will be a five foot high earthen berm on which
railroad track run at a distance of fifty feet from the dog runs.
This design should reduce sound levels even more so than the
design of the Elmfield Center.
For additional comparison of sources of sound levels the
following information was taken from information provided by the
National Safety Counsel:
EXAMPLE SOURCE SOUND LEVEL (dBA)
Soft whisper (5 feet) 30
Quiet office 40
Average home (indoors) 50
Large office 50
Conversational speech (3 feet) 60
Freight train (100 feet) 70
Average automobile (30 feet) 74
Very Noisy restaurant 80
The data collected during phase one indicates that when the dogs
are locked indoors and barking the sound level reach backgound at
a distance of twenty three feet, three feet south of the six foot.
solid wood fence. These sound levels should represent sound
levels at the South Fort Collins Veterinary Center PUD under
similar circumstances.
4
The data collected in phase two indicates that at a distance of
200 feet the sound levels of the dogs barking are at background
levels for the neighborhood. Background levels were previously
identified in the report to range between 50 dBA and 60.dBA.
With changes in design, such as; a solid wood fence moved to with
in six feet of the dog runs and the earthen berm created by the
railroad tracks the South Fort Collins Veterinary Center PUD
should be able to reduce sound levels, with the dogs barking, to
background levels at a distance less than 200 feet.
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NUISANCES
Noise shall mean any sound which annoys or
disturbs humans or which causes or tends to cause
an adverse psychological or physiological effect
on humans.
Noise disturbance shall mean any sound which
endangers or injures the safety or health of hu-
mans or animals or annoys or disturbs a reason-
able person of normal sensitivities or endangers
or injures personal or real property.
Person shall mean any individual, association,
partnership or corporation, and includes any offi-
cer, employee, department, agency or instrumen-
tality of a state or any political subdivision of a
state.
Property boundary shall mean an imaginary
line along the ground surface and its vertical ex-
tension, which separates the real property owned
by one (1) person from that owned by another
person, but not including intrabuilding real prop-
erty divisions.
Public right-of-way shall mean any street, ave-
nue, boulevard, highway, sidewalk or alley or sim-
ilar place which is owned or controlled by a gov-
ernmental entity.
Public space shall mean any real property or
structures thereon which are owp-ed or controlled
by a governmental entity.
Quiet zone shall mean any area for the purpose
of ensuring exceptional quiet.
Sound shall mean an oscillation in pressure,
-,particle displacement, particle velocity or any other
physical parameter in a medium with internal
forces that causes compression and rarefaction of
that medium. The description of sound may in-
clude any characteristic of such sound, including
duration, intensity and frequency.
Sound level shall mean the weighted sound pres-
sure level obtained by the use of the sound level
meter and frequency weighting network, as spec-
ified in the American National Standards Insti-
tute specifications.
Sound level meter shall mean an instrument
which includes a microphone, amplifier, root -mean -
square detector, integrator or time averager, out-
put meter and weighting networks used to mea-
sure sound pressure levels.
Supp. No. 11
§ 20-23
Sound pressure shall mean the instantaneous
difference between the actual pressure and the
average or barometric pressure at a given point
in space, as produced by sound energy.
(Code 1972, § 78-9)
Cross reference —Definitions and rules of construction gen-
erally, § 1.2.
Sec. 20-22. Unreasonable noise prohibited.
No person shall make, continue or cause to be
made or continued any unreasonable noise; and
no person shall knowingly permit such noise upon
any premises owned or possessed by such person
or under such person's control. For purposes of
this Section, members of the Police Department
are empowered to make a prima facie determina-
tion as to whether a noise is unreasonable.
(Code 1972, § 78-1; Ord. No. 65, 1987, 5-5-87)
Sec. 20-23. Maximum permissible noise levels.
(a) A noise measured or registered in the man-
ner provided in § 20-24 from any source at a level
which is in excess of the dB(A) established for the
time period and land uses listed in this Section is
hereby declared to be excessive and unusually
loud and is unlawful. When a noise source can be
identified and its noise measured in more than
one (1) zoning land use category, the limits of the
most restrictive zoning classification shall apply.
Maximum
noise
Land uses [dB(A)J
Residential use areas ioned-T-L1
R-L-P, R-L-M, R-M, R-H, R-P,
R-M-P, M-L, M-M or T
7:00 a.m. to 7:00 p.m. 55
7:00 p.m. to 7:00 a.m. 50
Business and commercial use areas
zoned B-P, B-L, B-G, H-B or C
7:00 a.m. to 7:00 p.m. 60
7:00 p.m. to 7:00 a.m. 55
Industrial use areas zoned I-L and
I-P
7:00 a.m. to 7:00 p.m. 70
7:00 p.m. to 7:00 a.m. 65
1317
§ 20-23
FORT COLLINS CODE
lu <i'Ri o,77 M
nocse
Land uses fdb(A)J
Industrial use areas zoned I-G
7:00 a.m. to 7:00 p.m. 80
7:00 p.m. to 7:00 a.m. 75
(b) Between the hours of 7:00 a.m. and 7:00
p.m., the noise levels permitted in (a) above may
be increased by ten (10) decibels for a period of
not to exceed fifteen (15) minutes in any one -hour
period.
(Code 1972, § 78.2)
Cross reference —Zoning, annexations and development of
land, Ch. 29.
Sec. 20-24. Classification and measurement
of noise.
For the purposes of determining and classify-
ing any noise as excessive or unusually loud and,
as such, in violation of § 20-23, the following test
measurements and requirements may be applied;
provided, however, that a violation of § 20-22
may occur without the following measurements
being made:
(1) Noise occurring within the jurisdiction of
the city shall be measured at a distance of
at least twenty-five (25) feet from a noise
source located within the public right-of-
way, and if the noise source is located on
private property or public, property other
than the public right-of-way, the noise shall
be measured at or -within the property bound-
ary of the receiving land use.
(2) The noise shall be measured on a weighing
scale on a sound level meter of standard
design and quality and in accordance with
the standards promulgated with the Amer-
ican National Standards Institute.
(3) For the purposes of this Article, measure-
ments with sound level meters shall be made
when a wind velocity at the time and place
of such measurement is not more than five
(5) miles per hour or twenty-five (25) miles
per hour with a windscreen appropriately
attached to the microphone.
(Code 1972, § 78-3)
Supp. No. 11
Sec. 20-25. Exceptions.
(a) The provisions of this Article shall not apply
to:
(1) Any noise resulting from any authorized
emergency vehicle in responding to an emer-
gency call or acting in time of emergency;
(2) The operation of aircraft or other activities
which are subject to federal law with re-
spect to noise control.
(b) Notwithstanding any other provision of this
Article, construction or demolition projects shall
be subject to the maximum permissible noise lev-
els specified for industrial uses zoned I-G for the
period within which construction or demolition is
to be completed pursuant to any applicable per-
mit issued by the city or, if no time limitation is
imposed, for a reasonable period of time for com-
pletion of the construction or demolition project.
This Section shall not preclude obtaining a vari-
ance for a construction or demolition project pur-
suant to § 20-26.
(c) Nothing in this Article shall preclude any
type of emergency activity necessary for the pro-
tection of the health, safety and welfare of the
citizens of the city.
(Code 1972, § 78-4; Ord. No. 26, 1990, 4-3-90)
Sec. 20-26. Variances.
(a) The City Manager shall have the authority
to grant special variances from the provisions of
this Article—Any-person-seeking-a-special-var-i-
ance shall file an application with the City Man-
ager. The application shall contain the date, time,
location and duration of activity for which the
variance is requested as well as information which
demonstrates that bringing the source of sound or
activity for which the special variance'is sought
into compliance with this Article would consti-
tute an unreasonable hardship on the applicant,
on the community or on other persons.
(b) In determining whether to grant or deny
the application, the City Manager shall balance
the hardships to the applicant of not granting the
1318