HomeMy WebLinkAboutSP198600082 Correspondence Special Use Permit 1986-12-15 XifasterCraft
Building &Development Corp. irCCE7311,1 p
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DEC 1 G 1986
December 15, 1986
PLANNING DIVISION
Mr. David Benish, Planner
County of Albemarle
Department of Planning and Community Development
401 McIntire Road
Charlottesville, VA 22901-4596
Re: SP - 86 - 82 Caleb Stowe Village Offices Limited Partnership
Berkmar Park Site Plan.
Dear Mr. Benish:
Reference is made to your letter dated December 5, 1986. In response to
the request of the Planning Commission at its meeting on December 2, 1986
please find enclosed the following documentation:
1. Report of Analysis and Recommendations for Noise Control at
Berkmar Park Kennels, prepared by Wildermuth and Associates,
dated December 13, 1986.
2. Letter from Sally Mead, Director, Albemarle SPCA, dated December
8, 1986.
3. Letter from James J. Krack, Executive Director, American Boarding
Kennels Association, dated December 4, 1986.
4. Letter from Dr. Charles H. Wood, Jr. , Old Dominion Animal Hospital,
dated December 8, 1986.
5. Letter from Richard N. Atkinson, DVM, Charlottesville Animal
Hospital, dated December 13, 1986.
We trust that this information will satisfy the concerns of the Planning
Commission.
On behalf of the applicant we respectifully request that the petition
for the Special Use Permit, as well as the Berkmar Park Site Plan, be
heard before the Planning Commission at its meeting on January 6, 1987.
If you require any further information, please do not hesitate to
contact me.
Sincer ly,
Stanl E. Binsted
SEB/j cm
1100 Dryden Lane, Charlottesville, Virginia 22901 • (804) 971-7666
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REPORT
OF
ANALYSIS AND RECOMMENDATIONS FOR NOISE CONTROL
AT
BERKMAR PARK KENNELS
* * * * *
1 . INTRODUCTION
1 . 1 This report of analysis and recommendations for noise
control at the proposed Berkmar Park Kennels on Berkmar Drive in
Charlottesville, Virginia has been prepared at the request of Mr.
Stanley E. Binsted of MasterCraft Building and Development Corp.
It reviews the noise control provisions of the Albemarle County
Virginia Zoning Ordinance, the siting and terrain features at the
proposed kennels, available data on measured noise at similar
facilities and proposed methods of construction. From these data,
comments and recommendations are made for specific features in the
construction of the kennels to assure that county noise limits are
not exceeded.
1 . 2 An explanation of noise control terms used in this
report has been provided in Appendix A.
2. ORDINANCE NOISE CONTROL REQUIREMENTS
t'~' 2 . 1 The County Zoning Ordinance contains two references to
noise control. The basic noise provisions are in Section 4 . 14 . 1
entitled: "NOISE. " The table therein contains octave band sound
levels which shall not be exceeded at residential and other
district boundaries. For ease of reference, we have calculated the
dBA or "A-weighted" sound level equivalent of these values , which
are 51 dBA at residential boundaries and 62 dBA at all other
boundaries. The section further provides that between 7 PM and
7 AM the sound levels in each band shall be 5 dB lower, which
results in a nighttime limit of 46 dBA at residential boundaries
and 55 dBA at all other boundaries.
2 .2 Section 5.1 . 11 of the county ordinance provides an even
further restriction on the maximum allowed sound level from a
commercial kennel to 40 decibels at the nearest agricultural or
residential property line. Although not stated, it is presumed
that the dBA weighting is intended, as the limit would otherwise
be undefined. The section also provides that the soundproofed
building structure housing the kennel shall not be less than 200
feet from the nearest agricultural or residential property line.
Wildermuth & Associates
•
•
3 . SITING AND TERRAIN FEATURES
3 .1 The proposed soundproofed kennel building is located on
/ the east side of Berkmar Drive. The nearest residential property
line is over 300 feet to the west, on the east side of
Williamsburg Road. The ground elevation at the kennel building is
500 feet and at the residential property line is about 490 feet.
At the nearest residence , the ground elevation is about 25 feet
higher, or 515 feet. Between the kennel building and the residence
is a wooded gully, with a mixture of evergreen and deciduous
trees. If we adhere literally to the property line as the location
to be protected, we can expect some assistance from the
attenuation of the trees , but not more than 10 decibels . There
would also be attenuation due to a barrier effect from the east
side of the gully, but not more than 5 dB , as the sound path is
grazing only and not interrupted. However, from a practical
standpoint, it is the residence itself we need to protect , which
is about 460 feet from and within line-of-sight from the kennel
building. We would therefore would expect only inverse-distance
sound attenuation, with no excess attenuation due to trees or the
barrier effect of the hillside.
4 . EXPECTED INTERIOR NOISE LEVELS .
4 . 1 Measurements of interior noise levels of several kennels
[1] have been made by Wildermuth & Associates . In these kennels
the canine population was in the order of 50 to 100. There were
r-N, varying conditions of absorption, resulting from the presence or
`--• lack of an acoustical ceiling, or hanging baffles. The average
sound level varied from 77 to 85 dBA, with the largest number due
primarily to the highest population. The peak sound levels were
found to be in the range from 92 to 100 dBA, depending somewhat on
the number of dogs and the amount of absorption in the room. If
the dog barks occurred exactly at the same time, then the sound
energy wou-1d add, and the sound level would increase according to
the lorar(itm of the total energy. Thus 100 dogs barking together
would be 3 dB louder than 50 dogs barking. Practically , however,
it is not likely that the interior sound level would exceed 105
dBA (even from a particularly energetic dog) , and the recommended
acoustical treatment will aid in reducing the sound level below
this value.
[1] A study made in May , 1981 for Defenders of Animal Rights ,
Baltimore, MD. Measurements were made at Baltimore County, MD
Animal Shelter, Montgomery County, MD Animal Shelter and at the
Arlington County VA Shelter of the Animal Welfare League.
Wildermuth & Associates Page 2
410
5. SOUND ATTENUATION OF PROPOSED CONSTRUCTION FEATURES .
5 . 1 Construction features of the proposed kennel building
will have estimated sound attenuation as follows. To simplify the
analysis, all attenuation values will be expressed as STC (Sound
Transmission Class ) values . These are single numbers derived from
1/3 octave band measured values of attenuation according to ASTM
standard E413-70T or a later revision.
1 ) Building Structural Wall . Proposed construction
consists of one ;Giythe of 8-inch masonry block with
vermiculite fill and a second wythe)of brick either as
a facing or part of a cavity wall. Estimated STC = 56 .
2) Roof . Will be Ribbed, galvanized sheet steel , 26
gauge, with a minimum of R-11 insulation attached
directly to underside. Estimated STC = 26
3 ) Kennel Area Ceiling. Should be 5/8" thick gypsum
wallboard secured to underside of joists and shall have
an overlayer of R-11 insulation. May not be required
for adequate sound isolation. (See text )
Estimated STC = 29
4) Suspended Acoustical Ceiling . Should be provided in
all areas. In kennel area would be suspended at 6" or
n, more below gypsum board ceiling, or below joists if
gypsum board ceiling is not used. If no gypsum board
above, should have at least R-11 insulation on upper
side. Should be Mineral Fiber panels rated at NRC .60
or better and room-to-room STC 35 or better. A sugges-
ted type is Conwed Facination, 5/8" minimum thickness .
As a room-to-plenum attenuator the STC rating would be
about half the room-to-room value. Estimated STC = 17
5) Skylights . These are under consideration as an
alternate to the windows in 6) below. The Wasco Type
DDCS-1-2828 , size 22-1/4" x 22-1/4" with a dual convex
dome of acrylic plastic is proposed. We were unable to
get further details from Wasco, but from their other
data sheets, it is assumed that this size would use
1/8" thick sheets . Estimated STC = 26
6 ) Windows, Kennel Area. These are under considera-
tion as an alternate to the skylights in 5) above. Size
proposed is 36" x 48" . They should be either sealed
(non-openable ) with acoustical sealant, or if openable
should be fully gasketed to assure the full STC value
of the window. Glazing used should be at least 1/8"
thick (double-strength "float" glass ) . See note about
storm windows in 7 ) below. Estimated STC = 29
Wildermuth & Associates Page 3
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•
7 ) Windows, Grooming and Office Areas . The two
windows on the south side will be approximately 48" x
60" and the three on the west end (office end) will be
approximately 48" x 72" . All should have glazing of at
least the thickness recommended for item 6) .These
windows do not have to be sealed, but should have good
gasketing for sound isolation. Estimated STC = 29
Note: Separate storm windows will improve the sound
rating. However, a "Thermopane" window, typically 1"
thick , in lieu of a combined basic and separate storm
window will not improve the basic window rating.
8 ) Entry Door and Glass Surround, West End . This will
be a double glass door, presumably 3/8" in thickness ,
with a glass surround of probably 1/4" thickness. The
total area is approximately 17 feet wide x 10 feet
high. If doors are framed, gasketing will be easier,
including the astragals. Estimated overall STC = 30
9) Side and Rear Doors . These are 40" x 84" in size
and should be metal doors 1-3/4" thick , with insulation
filler. The door perimeters should be well gasketed and
should include a good gasket at the sill: drop seal or
other dependable type. Required Minimum STC = 28
6 . CALCULATED OVERALL BUILDING NOISE INSULATION FACTOR
6 . 1 Approach. In order to determine the expected noise
level at the exterior surface of the building, it is first neces-
sary to calculate the effective noise insulation factor of the
building. The worst-case approach was taken, by assuming that the
kennel occupies the entire building, and that the noise can
radiate through all exposed surfaces. No allowance was made for
any improved STC due to a portion of the north wall being covered
by an earthen bank . Two calculations were made: 1 ) with the added
gypsum board ceiling in place above the acoustical ceiling, and 2)
with only an acoustical ceiling in the entire building.
6 . 1 . 1 In the first calculation, it was assumed that both
the gypsum board and acoustical ceiling would be in place
throughout the building. The STC values of all the building
elements were converted into their respective values of sound
transmission , added together, and with the value of
sound absorption provided by the acoustical ceiling, a value
for the Noise Insulation Factor (NIF ) was obtained for the
entire building. This value of NIF was found to be 42 dB.
6 . 1 .2 In the second calculation, the ceiling was assumed
to consist of only a suspended acoustical ceiling. All other
,.� building elements were as in calculation 1 ) . With this new
condition, the value of NIF was found to be 38 dB.
Wildermuth & Associates Page 4
7 . EXPECTED SOUND LEVEL AT RESIDENTIAL PROPERTY LINE.
7 . 1 The expected sound level at the residential property
line was then calculated assuming that the peak sound level in the
kennel would be 100 dbA and using successively the two values of
NIF found above. As the office end of the kennel building is
facing the residential area, it was assumed that all the sound
would be radiated from that surface. Initially it was found that
the sound would be attenuated 5 dB in the first 14 feet from the
building face. For the remainder of the path ( 340 - 14 ) = 326 ft. ,
the sound would be attenuated at the rate of 6 dB for each
distance doubled. Thus at 340 feet, at the nearest residential
property line, the additional attenuation due to distance was
found to be 27 dB, making a total path attenuation of 32 dB .
7 . 1 . 1 Under the first condition 6 . 1 . 1 above, with both the
gypsum board and acoustical ceiling, the sound level at the
residence boundary would be:
Source - NIF - Path = 100 - 42 - 32 = 26 dBA.
7 . 1 .2 Under the second condition, 6 . 1 .2 , with only the
acoustical ceiling, the sound level at the residence boundary
would be: 100 - 38 - 32 = 30 dBA.
7 .2 Both the above values are well below the 40 dBA limit .
In addition, they are conservative, as they do not include any
attenuation for trees or for grazing path attenuation of the gully
east bank . In addition, the radiated level will be lower than
assumed, as the office area will act as additional attenuation for
the noise source, and noise radiation will be primarily through
the roof and the south side of the building, neither of which is
directly facing the residential area. As a further observation,
the actual residence is in the order of 460 feet from the kennel
building, which would increase the total path attenuation 3 dB to
35 dB, providing a further factor of safety.
8 . ADDITIONAL COMMENTS AND RECOMMENDATIONS
8 . 1 The plenum area will contain sound absorption material
both in the area immediately above the ceiling and below the roof
panels . However, it will be advisable not to have any openings
through the ceiling or the roof from the ventilating system,
unless these are provided with ducts having acoustical liners at
least 1" or more in thickness . It is recommended that the HVAC
exhaust duct to the outside air be terminated in an opening in the
east or rear end of the building. The exhaust duct should have a
1" or thicker acoustical lining and be at least 25 feet long
between an opening in the ceiling and the discharge to open air.
Ducts having a P/A of less than 0 . 2 , (where P = perimeter and A =
cross section area, both in inches ) should be subdivided by
partitioning, with a lining in each section.
Wildermuth & Associates Page 5
j
8 .2 It will be noted that the estimated STC value for the
skylights is essentially the same as that for the roof panels . For
this reason skylights , if well sealed, could be used in the
quantity proposed without detriment to the sound isolation of the
building. However, the openings which would be required in the
acoustical ceiling should be closed with panels of clear acrylic
of not less than 1/4" in thickness.
8 . 3 For sound control within the kennel building, it will be
desirable to provide a sound isolation partition between the
office and public area and the kennel area. This partition should
have at least one layer of 1/2" or 5/8" gypsum boards on each side
of 3-1/2" metal studs at 24" centers , and well calked at ceiling
and floor. The cavity should be filled with fiberglass or mineral
fiber insulation between studs. If wood studs are used, it will
be necessary to isolate the panels on one side by the use of
resilient channels. To complete the sound isolation, a gypsum
board ceiling will be essential over the office and public area,
and this should be fully covered on top with R-11 insulation. An
acoustical ceiling should be installed below this at a distance of
6" or more. Doors between the areas should be comparable to the
metal doors previously described, or at least should be good
quality solid core wood doors . In addition, they should be well
gasketed all around.
J&40
/ John L. Wildermuth
WILDERMUTH & ASSOCIATES
P. O. Box 35732
Richmond, Virginia 23235
( 804) 320-2353
December 13 , 1986
Wildermuth & Associates Page 6
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Appendix A
AN EXPLANATION OF SOME NOISE CONTROL TERMS
* * * * *
1 . Sound Pressure Level - The value of the sound pressure,
expressed in decibels and referred to a standard reference
pressure of 20 micropascals , which is approximately the
threshold of hearing of a healthy young male human adult.
2. Noise level - Same as sound pressure level .
3. Decibel - Abbreviated "dB" , a logarithm of the ratio of the
measured sound pressure to the reference sound pressure of
20 micropascals = 20 log (P/P(ref ) ) .
4 . dBA - Abbreviation for "decibels A-weighted" . This is a
designation given to sound level or noise level which has
been weighted by a frequency selective filter so that it
corresponds to the amplitude at which it would be observed
by the human ear. Noise level in dBA has been adopted and is
in general use for measurement of environmental noise,
traffic noise and wherever a measure of the noise effect on
humans is desired.
� �. 5. Sound Transmission Class - Abbreviated "STC" is a single
figure which represents the transmission loss of a wall or
structural component in dB. Derived from 1/3 octave band
sound pressure level measurements by a procedure specified
in ASTM Standard E413-70T or a later revision.
6 . Noise Reduction - This is the observable difference in noise
level in dB between a noise source room and an adjacent
listening room. It includes the transmission loss of the
intervening wall or building envelope, and a factor which
represents the absorption of the listening room, which in
this case is the outdoors.
fl
Wildermuth & Associates
Telephone 973-5959
Albemarle S. P. C. A.
Box 1883, University Station
Charlottesville, Virginia
22903
December 8, 1986
Dear Mr. Bowerman :
Mike Cronk proprietor of the Pet Motel has
shown me the plans for his proposed boarding
and grooming kennel which he hopes to build
on Berkmar Drive .
We consider Mike a very good kennel keeper a
and a conscientious one . The plans are
excellent and, from his description, would
involve all the necessities for comfort and
c,re of animals . I can see nothing that
would or could upset neighbors since there
are no outside quarters . Provisions have
been made for sound proofing and circulation of
air which are important so the animals are
not stressed while boarding or being groomed.
The exercise area are ad, uate and efficient ;
facilities for the personnel are excellent so
they are relaxed and able to deal with the
boarders and their owners .
Mike is concerned with the care of animals
and has often groomed stray dogs for us . He
is dedicated to their care not just as a
business venture but their welfare .
Sincerely,
Sally Mead, Director
IBM®
American Boarding Kennels Association
• A Nonprofit Organization •
0�014G KEN
9
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4
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4. I 0:
December 4, 1986 . /BFQ 1-1987
David Bowerman, Chairman 14
Albemarle Planning Commission 4;4Rsocr '*�y
c/o Mike Cronk, CKO
1511 5th Street
Charlottesville; VA 22901
Dear Mr. Bowerman:
This letter is being written to detail the credentials
of Mike Cronk, CKO, and to give some background information
about present-day pet boarding practices , for your infor-
mation.
Mike was one of the original founders of our association.
He was a member of our first board of directors , and was
Vice-President of ABKA for several years . During his term
of office , he helped establish many of the educational
programs and opportunities that we offer today. He travelled
to many parts of the country to help conduct meetings and
conventions , toured numerous boarding kennels , and was
influential in helping to shape our present industry.
After Mike left our board because of the demands of his
newly-established business , he continued to be active in
our meetings and programs , eventually earning certification
from the association through our 2 year certification
program (CKO Program) . He has also sponsored 5 of his
employees Ln our kennel technician program (KenTech) . We
routinely route all inquiries about our industry to Mike
whenever we receive them from your part of the country.
I can recommend him highly.
Mike asked me to pass along some comments about the
capacity of kennels within our industry. Modern boarding
kennels are normally designed to accomodate 100 dogs or
more . Many of our members handle up to 250 animals with
ease . With good kennel design, and properly trained help,
pets can receive excellent care in such facilities . Older
kennels , which probably were originally designed as "hobby"
kennels , were considerably smaller, and did not lend them-
selves to such expansion..
We normally indicate to prospective kennel operators that
the absolute minimum number of runs that a kennel must
incorporate in order to succeed as a business is 50, but
that , in order to generate the kind of profits necessary
to hire qualified help, maintain the facility properly,
advertise effectively, etc . , they should plan for a kennel
4575 Galley Road • Suite 400-A • Colorado Springs, Colorado 80915 • (303) 591-1113
2 .
which can board closer to 100 dogs .
With good design, adequate soundproofing, and proper
operating procedures , a large boarding facility is a
good neighbor and performs a valuable service to the
community. From speaking with Mike about his planned
kennel , and because I am familiar with his credentials
and reputation within the industry, I know that you will
be pleased with the kennel which he is proposing .
Very Truly Yours ,
ame. . Krack, CKO, CAE
Executive Director
OLD DOMINION ANIMAL HOSPITAL
DR. CHARLES H. WOOD, JR.
1707 Allied Lane
Charlottesville, Virginia 22901
971-3500
December 8, 1986
Mr. David Bowerman
Dear Mr. Bowerman:
I have known Mike Cronk for the last four years; since my hospital Old
Dominion Animal Hospital has been open. Over the years I have recommended
his facilities to numerous clients for the grooming and boarding of their
pets. My clients rely on my opinion to help them find a safe and reliable
place to board their animals, so I do not take these recommendations lightly.
I have examined Mike's floor plan for the proposed boarding and grooming
facility. I see no problem with the facility having 100 dog kennels as
long as an adequate number of employees are hired to keep the facilities
clean and the animals well cared for. I feel confident that this will
be done.
Sincerely,
,n
Dr. Charles H. Wood, Jr.
DAVID G. OREBAUGH, D.V.M. RICHARD N. ATKINSON, D. V.M.
CHARLOTTESVILLE ANIMAL HOSPITAL
1870 SEMINOLE TRAIL, RT.29 N.
CHARLOTTESVILLE,VA. 22901
TELEPHONE (804)973-5331
December 13 , 1986
To Whom It May Concern,
I have reviewed a floor plan of the proposed kennel to be
built by Mike Cronk. I find the kennel to be very acceptable
for the overnight housing of cats and dogs in terms of comfort
and safety of the animals.
The enclosures are quite adequate in regard to space for
large dogs and provisions for sanitation are adequate i . e.
gutters and drains for waste removal and adequate hot water for clea
I do not have any specifications on the heating/cooling
system but any system meeting local codes should be very adequate.
I have been associated with and acquainted with Mr. Cronk
for a number of years and feel his business is an asset to our
community.
' n re yT,
Richard R . Atkinson, DVM