HomeMy WebLinkAboutLUA74-791INNING
FFIL
NOISE MEASUREMENTS AND
ASSESSMENTS FOR THE
RYERSON FABRICATION PLANT
northwest environmental technology laboratories, inc.
300 - 120th avenue n.e., bldg. 2 suite 108, Bellevue,washington 98005, (206) 455 - 3570
northwest environmental technology laboratories, inc.
300- 120th avenue n.e.,bldg. 2 suite 108, bellevue,washington 98005, (206) 455- 3570
NETL Job No. 108-74-094 OCTOBER 23, 1974
NOISE MEASUREMENTS
AND
ASSESSMENTS
FOR THE
RYERSON FABRICATION PLANT
PREPARED FOR
MOORE, WALLACE AND KENNEDY, INC.
1915 FIRST AVENUE
SEATTLE, WASHINGTON 98101
NOISE MEASUREMENTS
The City of Renton requires an assessment of the expected impact
of the proposed facility on the noise environment. To determine noise
impact , measurements were made at the existing facility which is to be
relocated on S.W. 10th Street in Renton, Washington. The same equipment
will be relocated in the new facility and the new facility will be
constructed of six inch concrete tilt-up wall , which will replace a structure
made of corrugated metal over a post and beam framework.
Sound level measurements were conducted at the existing site on
October 22, 1974, at two locations designated as Site I and Site 2. Site 1
was located 34 feet from Bay 4 of the main building between the office
building and the main plant. This location was 58 feet from the main doorway
into Bay 2.
Site 2 was located 50 feet south and 28 feet east of the northeast
corner of the building.
The purpose of these measurements was to ascertain ambient noise levels
which are a result of the fabrication processes going on within the building.
It was determined that unavoidable extraneous background noise, external to
the manufacturing processes under investigation was also measured. Such
noise arises from other manufacturing facilities, jet airplane noise, and
heavy vehicular traffic.
Sound levels were measured using a General Radio 1933 Sound Level
Meter which was calibrated with the General Radio Type 1562A Sound Level
Calibrator . Three types of sound level measurements were made. During the
course of the measurements the octave average levels and peak levels were
noted. These data are presented in Table I . Measurements were also made
on the A weighted scale; these were recorded continuously on FM magnetic
tape using a TC124 Recorder operating in conjunction with an NETL 1173 Modem.
Each data run obtained in the field was recorded on magnetic tape and
subsequently reduced in the laboratory. This involved demodulating the
recorded data and hand-digitizing the results and converting these data to
the levels of sound which are exceeded 10%, 500, and 90% of the time
L10, L50, and L90 respectively) . Table II lists the reduced noise level
r
TABLE I
Octave Band Average Noise Level dB Peak Noise Level dB
Center Frequencies Site 1 Site 2 Site I Site 2
31 .5 67 68 78 73
63 71 69 74 73
125 70 69 71 70
250 69 56 76 60
500 62 52 67 54
1000 59 47 63 52
2000 56 51 68 56
4000 49 45 65 48
8000 47 32 49 37
16000 32 20 34 25
TABLE II
Site Measured Noise Level dBA
L10 L50 L90
1 68 64 62
2 64 59 57
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measurements for the L10, L50, and L90 statistical descriptors. The
following information is given to acquaint the reader with the meaning of
the L measurements, so that interpretations can be made on the reported results.
Man 's subjective response to noise is determined by the sound level
emanating from the source of noise and the frequency spectrum of noise. In
the event of a proposed new facility, it is important to consider the increase
of noise from pre-existing levels. The assessment of noise impact requires
a consideration of several factors which influence the psychoacoustical
impact at particular locations .
The impact of noise on a community is based on a measurement which
represents the level of sound weighted in accordance with the apparent
loudness perceived by an average human observer. This number is expressed
in A-weighted decibels and is written as dBA.
Because of its inherent variability, noise must be considered as a
statistical entity. Steady noise levels are rarely observed and, because
of the time varying characteristics of environmental noise, it is necessary
to provide a statistical descriptor indicative of the dBA level which is
exceeded a specified percentage of the time. The three most commonly used
percentile levels are:
1 ) L90 (the ninety-percentile level ) -- L90 is the sound level in dBA
which is exceeded 90 percent of the time. L90 compares well with
the minimum levels read with a sound level meter and is representa-
tive of the quietest noise levels present.
2) L50 (the fifty-percentile or median level ) -- L50 is the sound level
in dBA which is exceeded 50 percent of the time. That is to say
50 percent of the time the noise is louder than the value indicated.
In the absence of loud peaks, such as a distant highway with a
uniform traffic flow, the L50 provides a satisfactory measure of
subjective response to noise impact .
the ten-percentile level ) -- L10 is the sound level in dBA3) L10
which is exceeded 10 percent of the time, and is the parameter of
measurement and prediction most often discussed. L10 is an indicator
of short-duration high-level sounds which often cause annoyance.
This is the design level listed in Table III in relation to specified
land use categories, and is an indicator of both the magnitude and
the frequency of occurrence of the loudest noise events.
TABLE III
DESIGN NOISE LEVEL/LAND USE RELATIONSHIPS
Land Use
Design Noise Design Noise
Category
Level - Leq Level - L10 Description of Land Use Categories
A2 57 60 Tracts of land in which serenity and quiet are of
exterior) exterior) extraordinary significance and serve an important
public need , and where the preservation of those
qualities is essential if the area is to continue
to serve its intended purpose. Such areas could
include amphitheaters , particular parks or portions
of parks , or open spaces which are dedicated or
recogpized by appropriate local officials for
activities requiring special qualities of serenity
and quiet .
B2 67 70 Residences , motels , hotels , public meeting rooms,
exterior) exterior) schools , churches , libraries , hospitals , picnic
areas, recreation areas, . playgrounds, active sports
areas, and parks.
C 72 75 Developed land, properties or activities not included
exterior) exterior) in Categories A and B above.
D For requirements on undeveloped lands see paragraphs
5a (5) and (6) of PPM 90-2.
E3 52 55 Residences, motels , hotels , public meeting rooms,
interior) interior) schools, churches , libraries, hospitals and
auditoriums.
U .S . Department of Transportation , 1974)
Table III lists the L10 noise levels applicable to the various design
land use categories . This table is a' guideline promulgated by the U.S.
Department of Transportation.
Table IV indicates the applicable Renton noise regulations which would
relate to the proposed project. Extrapolating the octave band measurement
data contained in Table I to conditions expected at the new site, there are
two adjustments to make. One adjustment will be that due to distance to
the nearest property line at the new site of approximately 10 dB. Additionally,
because of the difference in materials , first assuming transmission only
through the walls, there will be a further reduction of about 11 dB in sound
level . Because of the fact that the new facility will operate with some of
the doors open, it is assumed that this reduction will be about 5 dB. From
the foregoing , it is concluded that a 15 dBA reduction can be applied to
the measurement results contained in Table I .
Based on these estimates and taking into account that there will be
residual noise levels present which result in an over prediction of noise,
it is concluded that the proposed facility will satisfy the Renton noise
ordinance and provide an acceptable noise impact on the community.
TABLE IV
RENTON NOISE ORDINANCE
Frequency Band in Sound Pressure Level
Cycles/Second in db re 0.0002 microbar
Below 75 72
75 - 150 59
150 - 300 52
300 - 600 46
600 - 1200 42
1200 - 2400 39
2400 - 4800 34
Above 4800 32
Maximum allowable daytime levels. Noises originating from and
due to normal daytime activities in the M-P District shall conform to the
levels shown in the foregoing table at least ninety percent (90%) of the
time between the hours of seven A.M. (7:00 A.M.) and eight P.M. (8:00 P .M.) .
Exceptions. None of the foregoing provisions shall apply to noises
resulting from the operation of motor vehicles. Other exceptions are the
occasional infrequent situations arising out of research and development
work carried out in the M-P District; the temporary construction earth-
moving, road-building and related activites necessary to development,
improvement and maintenance of manufacturing part facilities , which shall be
limited to the hours between seven A.M. (7:00 A.M.) and eight P.M. (8:00 P.M.)
and noises incident to operations in areas surrounding an airport, heliport,
or landing field where such areas come under the M-P District .
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SITE APPROVAL :
JOSEPH T . RYERSON STEEL CO . , INC . ; Appl . No . SA-791-74 ; site approval
to construct office and steel fabrication and warehouse building in
M-P zone ; property located on S . W. 10th St . between Thomas Ave . S . W .
and Lind Ave . S . W.
APPLICANT JOSEPH T. RYERSON STEEL CO. , INC.TOTAL AREA ± 10 acres
PRINCIPAL ACCESS S.W. 10th St.
EXISTING ZONING M-P
EXISTING USE Undeveloped.
PROPOSED USE Office, steel fabrication, and warehouse.
COMPREHENSIVE LAND USE PLAN Manufacturing Park/Light Industrial
COMMENTS The size of build)ng and operation will necessitate a very compre-
hensive landscaping and screening plan. This would include areas adjacent to
the building (proposed ht. ±39' ) , within the parking lot, and around the peri-
phery of the property.
CITY OF RENTON
APPLICATIONoF
SITE APPROVAL XRECE/1/6
1-0
FOR OFFICE USE ONLY SEP 24 I9T4
File No . SA- 7 /- 7 ' Filing Date 9
cs-
NG D F P ARA4
APPLICANT TO COMPLETE ITEMS 1 THROUGH 6 :
1. Name Noboru Hera Phone 622-3733
Address 1923 - 1st Avenue Seattle, Washington 98101
2. Property location Earlington Industrial Park, Renton, Washington
3 . Legal description (attach additional sheet if necessary)
Lot 5, Earlington Industrial Park No. 1, according to plat recorded in volume 83
of plats, page 10, in King County, Washington
4 . Number of acres or sq. ft. 436,054 sq. ft. Present zoning 17- P
5 . What do you propose to develop on this property?
Office and Steel Fabrication and Warehouse Building
6 . The following information shall be submitted with this application:
Scale
A. Site and access plan (include setbacks ,
exiting structures , easements, and other
factors limiting development) 1"=10 ' or 20 '
B. Parking, landscaping and screening plan. . 1"=10 '
C. Vicinity map (include land use and zoning
on adjacent parcels) 1"= 200 ' - 800 '
D. Building height and area (existing and proposed)
7 . PLANNING COMMISSION ACTION :
Date approved ,c a73 y,C
Date denied
Date appealed
Appeal action
Remarks `Jcll.4f /0 (lD,7,r•fi_e175
Planning Dept.
2-73
AFFIDAVIT
I, Donald C . Zimmerman being duly sworn, declare that I
am the lr of the property involved in this application and that the
foregoing statements and answers herein contained and the information
herewith submitted are in all respects true and correct to the best of
my knowledge and belief.
Subscribed and sworn before me
this 20 day of September 19 74 ,
Notary Public in and for the State of
Washington, residing at Seattle
N of Notary Public) Signature
r . _.
General Mana r Representing Owne •
1200 - 4th Ave. S.
Seattle, Wa . ' 1200 - 4th Ave. S .
Address) Address)
Seattle, Washington
City) State)
624-2300
Telephone)
FOR OFFICE USE ONLY)
CERTIFICATION
This is to certify t . the foregoing application has been inspected by me
and has been fou ((¢ bib-thorough and complete in every particular and to
conform to the let a.pd' regulations of the Renton Planning Department
governing the if lfch application .
V "Lu _ V L .z 1
Date Received SEP 241974 19 By :
03 Is
vNG DE?
Renton Planning Dept .
2-73
I ` -- '
f. ..rofRFLisis
c. REBID) gi_
SEP 24 1974 CITY OF RENTON, WASHINGTON
I . ENVIRONMENTAL IMPACT WORKSHEET
44
rip\* 14.?...Tfli SE ONLY :
Application No . . ,ael - ,53- 7`r Negative Dec .
Date Received 7 -11 - 7X EIS
INSTRUCTIONS : The purpose of this information is to assist the vari -
ous departments of the City to determine whether an environmental
impact statement will be required before approving and issuing a per-
mit for a proposed project . Single family residential uses in non
sensitive" areas are exempt from this requirement as established by
Washington Administrative Code 173-34 .
In addition to the following information , please submit a vicinity map
recommend scale : 1" representing 200 ' to 800 ' ) and a site map ( rec-
ommended scale : 1 " representing 10 ' to 40 ' ) .
APPLICANT TO PROVIDE INFORMATION REQUIRED IN ITEMS 1 THROUGH 30 BELOW :
1 . Name of applicant Noboru Hara
2 . Mailing address 1923 - 1st Avenue Seattle, Washington
Telephone 622-3733
3. Applicant is :
F 10wner
f !Lessee
I IContract purchaser Architect
rXlother ( specify )
4 . Name and address of owner , if other than applicant :
Joseph T. Ryerson & Son, Inc.
2558 W. 16th Street
Chicago, Illinois 60608 Telephone 312-762-2121
5 . General location of proposed project ( give street address if any
or nearest street and intersection
S.W. 1Oth Street between Thomas Ave. S.W. and Lind Ave. S.W.
I.
2 -
6 . Legal description ( if lengthy , attach as separate sheet )
Lot 5, Earlington Industrial Park No. 1, according to plat recorded in volume 83
of plats, page 10, in King County, Washington
7 . Area 436,054 sq. ft. Dimensions irregular - see Site Plan
8 . Intended use of property or project ( include details : number of
units , volume , etc . ) :
Office and steel fabrication and warehouse building. 114,142 sq. ft. total area.
Office 57' x 156'. Fabrication 174'-10" x 602'
9 . Generally describe the property and existing improvements :
Presently the site is vacant. It has been cleared and rough graded with
approximately 5000 yards of fill existing on the site. Streets and curbs
have been improved and all utilities are in the street.
10 . Total construction cost or fair market value of proposed project
including additional developments contemplated :
1,400,000.00
11 . Construction dates (month and year ) for which permit is requested :
Begin September 1974 End June 1975
3 -
12 . List any other permits for this project from state , federal , or
other local governmental agencies for which you have applied or
will apply , including the name of the issuing agency , whether the
permit has been applied for , and if so , the date of the applica-
tion , whether the application was approved or denied and the date
of same , and the number of the application or permit :
Date
Agency Permit Type Submitted* Number Status**
City of Renton Building Permit
3uilding Dept.
I Leave blank if not submitted .
Approved , denied or pending .
13 . Has an Environmental Impact Statement or an Environmental Assess-
ment been prepared for the proposed project?
If "yes " submit copy with this
yes tXlno environmental impact worksheet .
14. Are there similar projects , both public and private , existing or
planned in the immediate area :
x yes I ` no l 'don ' t know If "yes " explain .
There are other office and
warehouse buildings throughout
the Industrial Park
15 . Is the proposed project located in or adjacent to an area or
structure having unique or exceptional historic , cultural , or
other values considered important by some sectors of the popu-
lation ?
yes
r—
XHo If "yes " explain .
16 . Is the proposed project located in an area that may be considered
sensitive and is subject to erosion , landslides , floods , etc . ?
l yes Xl no If "yes " explain .
4 -
17 . Is the proposed project located in an area that has a number of
large trees or other natural landscaped areas , waterways , marshes
or wildlife?
ayes X` no If "yes " explain .
ENVIRONMENTAL IMPACT OF PROPOSED PROJECT : In the following questions
summarize what the applicant feels will be the environmental impact ,
both beneficial and adverse , of the proposed project . Consideration
should be given to both the human and natural environmental as well
as physical , social , and aesthetic aspect . For projects which are
part of a more extensive plan , consider the implications of the entire
plan and not just the project now being proposed .
18 . Land Use : Will the project have a significant effect on land
use in the surrounding area?
eyes i Xjno Explain :
This area has been planned for indust-
rial uses such as the use proposed.
19 . Project Design and Appearance : Will the project design , appear-
ance , landscaping , etc . , assure the maximum protection for the
natural environment?
iX1 yes I no Explain :
Site is now vacant. When complete the
new landscaping will benefit the
environment.
20 . Ground Contours : Does the proposed project have an effect on
the existing ground contours of the project location?
yes g1no . Is the project likely to cause erosion
or sedimentation? yes limno? If "yes " to either , explain .
t'
5 -
21 . Air Quality: Will construction of the project and use of the
completed project have a substantial effect on the existing air
quality? (Consider the effect of any gas , chemicals , smoke ,
dust , particulate matter , and odors ) ?
I yes I X ,no If "yes " explain .
22 . Water Quality : Will construction of the project and use of the
completed project be likely to have an effect on the existing
water quality of the area? (Consider the adequacy of drainage
and runoff and the likely endpoint of any liquids draining from
the project. ) jyes X no . Is there a good possibility
that this project will requirg _an expansion of local water and/or
sewer facilities?LA yes IX Ino
If "yes" to either , explain .
23 . Noise : Will construction of the project or use of the completed
project significantly affect the existing noise level of the
area? Elyes ;—X( no . Will the project be affected by airports ,
freeways , railroads or other sources of noise?
lyes FiCino If "yes" to either , explain .
24 . Population Density : Will a noticeable population change result
from this project? ( Consider the present density per acre in
the surrounding community to the proposed density of the project
and including daytime density . ) yes [-lino . Will the pro-
ject cause periodic or temporary fluctuations in population due
to tourism , employment , shopping , schools , etc .
If "yes " to either , explain .
r
6 -
25 . Effect on Population : Will the proposed action directly or in-
directly cause the relocation of a sizeable number of persons or
the division or disruption of existing community patterns of liv-
ing? Jyes L ] no If "yes " explain .
26 . Schools and Parks : Will the proposed project have an effect on
schools and parks in the area?
r lyes XI noIf "yes " explain .
27 . Transportation : Will construction of the project or use of the
completed project have a significant impact on transportation in
the area? ---
lyes IXIno
Explain :
All streets are in and improved. Streets are adequate to handle all industrial
park users.
28. Public Use : Will the project be available for use by all sectors
oT the public?
I yes Xl no
Explain :
This project is a private enterprise and will serve mainly customers requiring
the services of this business
29 . Other Impacts : Identify any other beneficial or adverse environ-
mental impacts which may result from the construction or comple-
tion of the proposed project .
None
8 -
TO BE FILLED IN BY CITY DEPARTMFNTS
REVIEW BY OTHER CITY DEPARTMENTS :
Department :
Comments :
d/G F .tea>O-c-; _S, ,eic
Ly_S
c
c 7,24) euz
Signature of Director or Authorized Representative Date
REVIEW BY OTHER CITY DEPARTMENTS :
Department :
Comments :
Signature of Director or Authorized Representative Date
9 -
REVIEW Br OTHER CITY DEPARTMENTS :
Department :
Comments :
oxi
ature of Director or Authorized Representative Date
REVIEW BY OTHER CITY DEPARTMENTS :
Department :
Comments :
Signatur? of Director or Authorized Representative Date
10 -
ACTION BY RESPONSIBLE OFFICIAL
A. Staf " review determined that project :
Has no significant environmental impact and application
should be processed without further consideration of
environmental effects .
May have significant environmental impact and a complete
environmental assessment should be prepared by applicant
prior to further action on request for permit .
B . Reasons for above conclusion :
Sigrature of Responsible Official or Authorized Representative
Date :_ Form : EIS-1
Planning Department
October 15 , 1973
yc•ss '
NOTICE: OF PUBLIC HEARING
RENTON PLANNING COMMISSION
RINTUN , WA'_;lI I NGTON
A PUBLIC HEARING WILL BE HELD BY THE RENTON PLANNING COMMISSION AT ITS
REGULAR MEETING IN THE COUNCIL CHAMBERS , CITY HALL , RENTON , WASHINGTON ,
ON OCTOBER 23 1974 _, AT 8 : 00 P . M . 10 CONSIDER 1HL FOLLOWING
PETITIONS :
1 . REZONE FROM S- 1 TO L- 1 , file No . R-792-74 ; property
located on Grady Way at Talbot Road . Legal descrip-
tion on file in Planning Department office .
2 . SITE APPROVAL TO CONSTRUCT OFFICE AND STEEL FABRI -
CATION AND WAREHOUSE BUILDING IN M-P ZONE ; file
No . SA-791-74 ; property located on S . W. 10th between
Thomas Ave . S . W . and Lind Ave . S . W .
a
ALL PERSONS INTERESTED OR OBJECTING TO SAID PETITIONS ARE INVITED TO BE
PRESENT AT THE PLANNING COMMISSION MEETING ON OCTOBER 23 , 1974 .
AT 8 : OO P . M . TO VOICE THEIR PROTESTS OR OBJECTIONS TO SAME .
LARRY GIBSON , SECRETARY
PUBLISHED October 13 , 1974 RENTON PLANNING COMMISSION
CERTIFICATION
1 ,MICHAEL L . SMITH , HEREBY CERTIFY THAT THREE COPIES OF THE ABOVE
DOCUMENT WERE POSTED BY ME IN THREE .CONSPICUOUS PLACES ON THE PROPERTY
DESCRIBED ABOVE AS PRESCRIBED BY LAW .
ATTEST : subscribed and sworn
to before me , a Notary Public , SIGNE‘.:/1- 4/44 /1-eux,ee
on the 10thday of October Michael L . Smith
1974 . -- -
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CITY OF RENTON
PLANNING DEPARTMENT
STAFF REPORT
OCTOBER 22 , 1974
APPLICANT : JOSEPH T. RYERSON & SONS •
APPLICATION : SITE PLAN APPROVAL
LOCATION : Located on S . W. 10th between Thomas Ave . S . W .
and Lind Ave . S . W.
ZONING : M-P
APPLICABLE
SECTIONS OF THE 4-730 ; 4-712 ; 4-713 (a ) ; Chapter 22 .
ZONING CODE :
REQUEST : Applicant requests Planning Commission approval
of plans for a Steel Warehouse/Distribution/
Office Facility in an M-P zone .
COMMENTS : 1 . Joseph T . Ryerson & Sons , Inc . , is a
steel service center . They procure
steel products , generally in mill quan-
tities , and store them and ship the
products in either stock lengths or in
lengths or sizes cut or assembled to
order. Their products are generally
flat steel sheets , structural shapes ,
steel plates , and steel bars of various
shapes and grades .
2 . The proposed use is allowable in the
M-P zone .'
3 . The approximately three acres behind
the new facility will be retained for
future expansion or possibly sold at
some future date .
4 . There will be a small amount of outdoor
storage , generally in the form of stock
material bundled in mill quantities ,
small quantities of wood blocking used
in shipping and some excess steel stor-
age racks and/or equipment . This and
any garbage or waste material would
have to be specifically screened by a
sight obscuring fence no less than 5
feet in height as per the M-P zone require-
ments .
5 . Noise levels of any equipment or storing
procedures will conform to the M-P zone
standards and OSHA requirements .
6 . Parking required - 151 stalls ; parking
provided - 151 stalls .
STAFF
RECOMMENDATION : Recommend approval subject to :
1 . Staff approval of final landscape plans
incorporating S . C . S . requirements , with
the submission of a bond for 150% of the
installation and a 3 year maintenance
period .
4
JOSEPH T. RYERSON & SONS - PAGE TWO
2 . Engineering and Planning Department
approval of detailed drainage plan
with suitable storm water retention
and oil water separation facilities .
3 . Screening as per Code • of all outdoor
storage of equipment , materials and
wastes .
4. Staff approval of location , screening ,
etc . , of other external elements , if
any . ( i . e . gas pumps , dumpsters , etc . )
L1 E k f+
41,
1 THE CITY OF RENTON
MUNICIPAL BUILDING 200 MILL AVE. SO. RENTON,WASH. 98055
0pA o AVERY GARRETT, MAYOR • PLANNING DEPARTMENT
235 - 2550
ATtO SEPlt*-
October 29 , 1974
Joseph C. Broz,
Manager, Construction Engineering
Joseph T. Ryerson and Sons, Inc.
Post Office Box 8000-A
Chicago, Illinois 60680
RE: Site Plan Approval, Joseph T. Ryerson, Inc.
for Steil Service Center in the Earlington
Manufacturing Park, #SA-791-74
Dear Mr. Broz:
The Renton Planning Commission at its October 23, 1974
Public Hearing approved the site plan and landscape plan
submitted for the proposed project, subject to:
1) Final staff approval of landscape plan
incorporating the 2% U.S. Soil Conservation
Service requirement for the Valley, and a
bond for 150% of the landscaping and a
3 year maintenance period.
2) Engineering and Planning Department approval
of detailed drainage plan with suitable
storm water retention and oil/water separation
facilities.
3) Screening as per code of all outdoor storage
of equipment, materials and wastes.
4) Staff approval of location, screening, etc.
of other external elements of the proposed
operation including, but not limited to, gas
pumps, dumpsters , and truck storage areas.
The Planning Commission also expressed concern that the
sidewalks should be installed similar to the other properties
Joseph C. Broz ,
Manager, Construction Engineering
October 29, 1974
Page Two
in the Earlington Manufacturing Park.
These items can be addressed through the Building
Permit Application process by adjusting the plans where
required.
If you have any further questions please contact this
Department.
Very truly yours ,
1Vdd/L
Michael L. Smith
Assistant Planner
MLS :ms
cc : Dave Kennedy
T. M. Carstensen & Assoc. , Inc.
Glen Hunt - Jerald Bell & Assoc.
Noboru Hara
u Z THE CITY OF RENTON
2 o MUNICIPAL BUILDING 200 MILL AVE. SO. RENTON, WASH. 98055
ch
Op AVERY GARRETT, MAYOR • PLANNING DEPARTMENT
O 42-235 - 2550
134TeoSEPOe:3 October 23 , 1974
MEMORANDUM
TO : Tom Touma , Office Engineer
FROM : Joan Lankford , Assistant Planner
RE : Sidewalk Off-Site Improvements for Ryerson Steel
Company on S . W. 10th Street; Earlington Industrial Park
In review of the landscape and site plan submitted , it is our
opinion that the need for a sidewalk should be waived due to the
remoteness of the area .
In addition the following items were considered :
1 . The property to the west does not have a sidewalk.
2 . The property to the east has a six foot sidewalk but
it is located on private property.
3 . If a sidewalk were to be required , it would be adjacent
to the roadway (other configurations has an additional
ten feet between sidewalk and curb) and would limit the
planting strip to a width of ten feet in total . In
regards to the proposed height and scale of this building ,
I would recommend that the planter width be allowed to
extend sixteen feet in lieu of a sidewalk.
4 . This is an area that has relatively little or no
pedestrian traffic , and if at such time- the property
on the south of S . W. 10th Street is developed , a con-
tinuous sidewalk could be provided .
Mr. David Kennedy , T. M. Carstensen and Associates , project
consultant , has been notified by telephone that he has the right to
apply for a waiver of off-site improvements for sidewalks through the
Board of Public Works .
JAL :ms
Renton Planning Commission
Meeting October 23, 1974
Page Three
Renton Village Shopping Center as an example of
development of H- 1 land by Puget Sound Power and
Light Company . He noted planned continuation of
of Talbot Road , which would provide four ways to
approach the property . He said there are no exact
plans for development of the property at this time .
In reply to Gibson ' s questions regarding plans for
the present facility , Mr . Wood stated that there
is no time table for removal nor plan for relocation
at this time .
The Chairman invited comment from the audience but
received no response . Further questions and dis-
cussion were invited from the Commission .
Discussion followed with Wik , Teegarden , Scholes ,
and Seymour making inquiries as to the reason for
the applicant ' s preferance for L- 1 zoning rather
than M-P . Mr. Wood reiterated their position that
they preferred the flexibility of L- 1 zoning and
cited the Renton Village Shopping Center as an
example of their development concepts under H- 1
or L- 1 . Gibson suggested consideration be given
to B- 1 zoning for the site and Renton Village as
well in view of present use . Additional suggestions
were made for consideration of rezoning of all Puget
properties to M-P or L- 1 . Mr . Wood indicated rezon-
ing of the entire area might be considered . Seymour
noted adequate undeveloped L- i and H- 1 property in
the vicinity and requested further information as
to the nature of the proposed development . Mr .
Wood indicated the concept would be commercially
oriented , and the property might be developed on a
lease basis .
Responding to an inquiry by Seymour relative to the
rights of a quasi -public institution in a residen-
tial zone , Mr. Magstadt stated that small substa-
tions are an allowable use in a residential zone ,
but they must comply with the character of the
neighborhood . In reply to Seymour , the Assistant
Planning Director indicated that should Puget
Power lease their property to another company for
another use , their privilege as a quasi -public
institution relative to the property would cease ,
and the new use would have to meet all require-
ments of the City Code .
Further discussion ensued regarding the possibility
of rezoning of the entire area . Teegarden suggested
further study by the Zoning Committee , staff and
applicant with regard to rezoning of all Puget
Power properties . Mr . Magstadt noted that should
Puget Power agree to amend their request to include
the entire area , a new public hearing would be neces-
sary .
Following further discussion regarding appropriate
zoning to be considered , it was
ACTION:
MOVED BY TEEGARDEN, SECONDED BY SCHOLES , THAT THE
PUGET SOUND POWER AND LIGHT COMPANY APPLICATION FOR
A REZONE FROM S-1 TO L-1 BE CONTINUED WITH THE REQUEST
THAT THEY MEET WITH THE PLANNING DEPARTMENT STAFF AND
Renton Planning Commission
Meeting October 23 , 1974
Page Four
THE PLANNING COMMISSION ZONING COMMITTEE TO CONSIDER
THE ALTERNATIVES AND THE POSSIBILITY OF REZONING A
LARGER PORTION OF THEIR OWNERSHIP IN THE GENERAL VICINITY.
Gibson stated that it was his opinion that property on
both sides of Grady Way be considered in the study .
On the question , MOTION CARRIED, SEYMOUR DISSENTING.
ACTION:
MOVED BY SEYMOUR, SECONDED BY GIBSON, THAT WE ALSO
REFER TO THE ZONING COMMITTEE A REQUEST THAT THE COM-
MISSION EXPLORE SPECIFIC CATEGORIES OF ZONING, I .E.
B-1 INASMUCH AS THE DEVELOPED PROPERTY CONFORMS PRI-
MARILY TO B-1 ZONING, AND EXPLORE THE POSSIBILITY OF
A CONTRACT REZONE . MOTION CARRIED.
The Chairman left the meeting at 9 : 05 p . m. with the request
that Vice Chairman Seymour preside .
Jt SITE APPROVAL
B. JOSEPH T. RYERSON & SON , INC . ; Appl . No . SA- 791-74 ;
site approval to construct office and steel fabri -
cation and warehouse building in M-P zone ; property
located on S . W. 10th St . between Thomas Ave . S . W .
and Lind Ave . S . W .
At the request of the Vice Chairman , the Secretary intro-
duced the site approval application . The Vice Chairman
then called for a presentation from the staff .
Assistant Planner Smith pointed out the ten acre Earling-
ton Park site on the map . He described construction
fi
plans and asked Secretary Gibson to read a letter from
Joseph C . Broz , Manager , Construction Engineering , Ryer-
son and Son , Chicago , regarding the intended use of the
facility . The facility was described as a " steel service
center . "
Mr. Smith noted specific data relative to noise levels
provided by Northwest Environmental Technology Labora-
tories that indicate the operation will conform to noise
standards listed in the M-P section of the Zoning Code .
He stated that the applicant advised that the vacant
area behind the structure will be utilized for some
outdoor storage . The landscape plan provided for screen-
ing of the area in accordance with the Code .
Mr . Smith described further landscaping plans , including
added planting around the facility due to its height .
The matter of off-site improvements was reviewed . The
Assistant Planner noted a recommendation to grant a
waiver of off-site improvements for sidewalks along
S . W. 10th Street . Additional landscaping would be sub-
stituted .
Slides and photographs of the site and vicinity were
viewed . The site plan was described by Mr. Smith , who
noted that setback requirements of the M-P zone had
been met . A spur railroad track will come in to the
northeast end of the building , and internal loading and
unloading is planned .
Renton Planning Commission
Meeting October 23 , 1974
Page Five
The Vice Chairman invited comment from the applicant .
David Kennedy of Moore , Wallace and Kennedy , Inc . ,
representing the Ryerson Company , stated that the
primary usage of the facility is warehousing . The
fabrication is done in the form of cutting sheet
metal , cutting bars , cutting metal lengths and mill r
sizes to individual user sizes . He noted that Ryer-
son ' s handles steel , which is susceptible to rust ;
and therefore most of the operation is conducted in-
side . Approximately two and a half acres of covered
facility is proposed . He stated that the proposal
meets City requirements and will not pollute the
environment.
Mr. Kennedy pointed out the railroad right-of-way
and spurs in the vicinity on the site plan and
described their box car unloading operation , which
is planned to take place inside the building . He
noted no immediate plans for the vacant land behind
the structure and indicated there is a possibility
of expansion to the area at a later date .
With regard to sidewalks , Mr . Kennedy said they do
not anticipate casual pedestrian traffic ; and they
feel a path system would provide a better walkway .
He read excerpts from a report by NETL citing results
of noise measurement tests conducted at their present
facility . He noted it was concluded that the pro-
posed facility will satisfy Renton requirements re-
7arding noise impact .
Mr. Kennedy then introduced Don Zimmerman , General
Manager of Ryerson ' s in the Seattle area , and John
I
Abbott , Vice President of Stoen Construction Company ,
and invited questions from the Commission .
Responding to an inquiry by Scholes with regard to
the number of employees planned for the new facility ,
Mr. Kennedy indicated that sixty to seventy will be
on the payroll ; but it is expected that only fifty
will be present in the building at one time . He
noted two shifts and six trucks with drivers are
planned . The drivers will work the evening shift ,
when the trucks will be loaded .
Mr . Abbott , in reply to Scholes , stated that a fill
permit had been obtained for their preload operations
now in process .
In response to Wik concerning the delivery operation ,
Mr . Zimmerman indicated that it is estimated that ten
or fifteen trucks will be coming into the site per day ,
and six trucks will be leaving each day .
In response to Gibson ' s questions regarding the rail
delivery operation , Mr. Kennedy indicated that there
would be no stray box cars on any of the sidings .
Further questioning and discussion ensued regarding
the matter of sidewalks . The staff recommendation
for waiver was noted due to the necessity for the
sidewalk to be placed adjacent to the roadway , anti -
cipated little or no pedestrian traffic , lack of a
sidewalk on the property to the west , and a sidewalk
on the site to the east , which is located on private
property . It was noted that in view of the height
Renton Planning Commission
Meeting October 23, 1974
Page Six
of the planned structure , additional landscaping would be
preferred . Mr . Kennedy advised that they believed that
sidewalks were not necessarily applicable , but they would
take into consideration the Planning Commission ' s feelings
with regard to provision for them. Mr. Kennedy also in-
dicated that they feel the sixty foot setback of the
structure and parking should remain as proposed .
It was then MOVED BY TEEGARDEN , SECONDED BY SCHOLES , THAT
THE PUBLIC HEAF, ING WITH REGARD TO THE JOSEPH T . RYERSON
SITE APPROVAL APPLICATION BE CLOSED . MOTION CARRIED .
ACTION:
MOVED BY TEEGARDEN, SECONDED BY SCHOLES, THAT THE JOSEPH T.
RYERSON AND SON, INC. , APPLICATION FOR SITE APPROVAL BE
APPI'OVED SUBJECT TO THE FOLLOWING :
J . STAFF APPROVAL OF FINAL LANDSCAPE PLANS INCOR-
PORATING SOIL CONSERVATION SERVICE REQUIREMENTS,
WITH THE SUBMISSION OF A BOND FOR 150% OF THE
INSTALLATION AND A THREE YEAR MAINTENANCE PERIOD.
2. ENGINEERING AND PLANNING DEPARTMENT APPROVAL OF
DETAILED DRAINAGE PLAN WITH SUITABLE STORM WATER
RETENTION AND OIL WATER SEPARATION FACILITIES .
3. SCREENING AS PER CODE OF ALL OUTDOOR STORAGE OF
EQUIPMENT, MATERIALS AND WASTES .
4. STAFF APPROVAL OF LOCATION, SCREENING, ETC. , OF
OTHER EXTERNAL ELEMENTS, IF ANY. (I .E . GAS
PUMPS, DUMPSTERS, ETC . )
Discussion followed with special regard to possible waiver
of sidewalks , and it was requested by Scholes , Gibso; and
Mola that further consideration be given to possible
elimination of some parking and provision for sidewalks .
On the question , MOTION CARRIED.
A recess was declared at 10 : 15 p . m. The meeting was resumed at
10 : 25 p . m. , with all members noted above in attendance with the
exception of Chairman Ross .
4 . ADMINISTRATIVE :
A. COMMITTEE REPORTS
The Chairman called for committee reports .
ZONING COMMITTEE
Commissioner Mola , chairman , advised that a meeting of
the Zoning Committee will be scheduled in the near
future . Commissioner Gibson agreed to serve on the
Committee on a temporary basis .
COMPREHENSIVE PLAN COMMITTEE
Commissioner Teegarden , committee member , advised that
a committee meeting will be held shortly with regard
to the Comprehensive Land Use Plan as it relates to
the Green River Valley . Commissioner Seymour , commit-
tee member , indicated that the study of the land use
plan in the Kennydale area should be completed by
Christmas .
JOSEPH T.RYERSON A SON,INC./METALS-F PROCESSII 3
3 16TH E. <WELL STREETS, CHICAGO • (312) RO 2-2 '1
MAIL AC SS: P. O. BOX 8000-A. CHICAGO, ILL. 606
October 16 , 1974
OF RF, ,
RYERSON
Mr. Michael L. Smith OCT 18 1974
Assistant Planner a
Municipal Building
200 Mill Ave. South 4i
Renton, Wash. 98055 NG i'/
Subject : Joseph T. Ryerson & Son, Inc . --
Lot 5, Earlington Industrial Park No. 1
Dear Mr. Smith:
Our proposed construction at the Earlington Industrial Park
site is a replacement of our existing plant and office
facility presently located at 1200 4th Avenue South,
Seattle. The City of Seattle has acquired our property
through the process of condemnation. We must vacate the
premises by July 1, 1975. In order to meet this schedule ,
we have entered into a contract with Strand Incorporated
for the construction of our new facility. As you know,
the preloading for this facility is in process .
To meet our deadline and to allow two months for the relo-
cation of our operation, the new plant and office buildings
must be completed by May 1st , 1975 .
We will use this new facility in exactly the same manner as
our present 4th Avenue buildings . Joseph T. Ryerson & Son,
Inc. , is a steel service center. We procure steel products ,
generally in mill quantities , and store them and ship the
products in either stock lengths or in lengths or sizes cut
or assembled to order. Our products are generally flat steel
sheets , structural shapes , steel plates , and steel bars of
various shapes and grades. There are no excessive noises
associated with our operation. The noise levels of any of
our cutting equipment or storing procedures conform to OSHA
requirements .
We will be locating our new facility facing Southwest 10th
Street , between Thomas Avenue Southwest and Lind Avenue
Southwest . There will be approximately three acres left
vacant behind our new facility. This area will be retained
for future expansion or possibly will be placed on the market
for sale at some future date .
JOSEPH T.RYERSON&SON.IN(
n
Mr. Michael L. Smith
October 16 , 1974
2
Our operation requires only a minimal amount of outside
storage, generally in the form of stock material bundled
in mill quantities , small quantities of wood blocking used
in the shipping of our materials, and some of our excess
steel storage racks and/or equipment .
If you have any questions regarding the above or if I can
provide you with any additional information, please do not
hesitate to contact me at the above address in Chicago.
Very truly yours
bkw seph C . Broz
Manager
Construction Engineer
cc : Mr. D. C. Zimmerman
Mr. Ted Carstensen
Mr. John Abbott
RECENED o)
OCT 18 1974
C ..ra A/ /,Epics /o .1/ y
RYERSON & SON-Joseph T. Ryerson & Son, Inc., steel million office and warehouse plant facility in the Earliig-
fabricating company which has been located in Seattle for ton Industrial Park. The firm has applied to the city to
a number of years, has announced plans to build a $1.4 permit such a facility in an industrial park zone.
rrr•?
amoR THE CITY OF RENTON
z o MUNICIPAL BUILDING 200 MILL AVE. SO. RENTON, WASH. 98055
now AVERY GARRETT, MAYOR • PLANNING DEPARTMENT
O
235 - 25500
4TED SE PI-
MEMORANDUM
October 15 , 1974
TO : Files
FROM : Michael L . Smith ,
Assistant Planner
RE : Ryerson Steel Company Site Approval
I talked with Nobaru Haro , the architect for Ryerson
Steel Company , and asked him to provide us as soon as
possible with additional information in terms of :
1 ) A detailed description of the processes
involved and general nature of the use
intended for the site .
2 ) Specific noise data for the proposed use
to determine its conformance with M-P
noise standards .
3 ) A further explanation of the intended use
for the open space on the north side of
the proposed building .
Mr. Haro indicated he would supply us with this
information as soon as possible .
MLS :ms
lifftrseq
ir
Renton Planning Commission
Meeting October 9 , 1974
Page Eight
Assistant Planner Smith pointed out the 4 . 5 acre site on
the map , noting that the property is located to the south
of Grady Way on either side of Talbot Road . Property to
the south and east is zoned H- 1 , and sites north of Grady
Way are zoned L- 1 . Adjacent uses include the Puget Sound
Power and Light substation to the south and an auto rebuild
facility on S . 7th Street. He noted that the site consists
of two parts . The easterly portion is approximately three
acres , and the westerly portion , which is bisected by a
powerline easement , is 1 . 5 acres . The Comprehensive Land
Use Plan designates the area as M-P/L-1 .
The Chairman invited questions regarding issues to be con-
sidered at the forthcoming public hearing .
Commissioner Mola suggested that the applicant be encour-
aged to consider landscaping of their plant adjoining the
site . Noting the addition of some screening along Talbot
Road , Mr. Smith indicated the subject would be reviewed .
Seymour requested information as to the jurisdiction of
the Planning Commission with regard to the requested
rezone . Noting that the Comprehensive Land Use Plan desig-
nates the area as L- 1 or M-P , the Planning Director ad-
vised that the Commission may review the various alterna-
tives and can recommend to the applicant that he amend his
application . Wik asked if the applicant had been approached
by the staff in regard to M-P in lieu of L- 1 . Assistant
Planner Smith stated the matter would be reviewed .
Humble indicated that he would like information regarding
future use of the property . This request was also made
by Morrison and Teegarden . Seymour noted that the reasons
for requesting rezoning should be provided by the appli -
cant at the time of public hearing and that each applica-
tion should be considered on its own merits despite zoning
that had been granted in the past .
Scholes requested that an opinion be obtained from the
City Attorney relative to public utilities as it might
pertain to this rezone .
Gibson suggested that the whole area be reviewed from an
M-P standpoint. Gibson also requested information regard-
ing the circumstances designating a narrow strip of land
located along FAI -405 in the vicinity as S-1 .
SITE APPROVAL
B. JOSEPH T . RYERSON & SON , INC . ; Appl . No . SA-791-74 ;
site approval to construct office and steel fabri -
cation and warehouse building in M-P zone ; property
located on S . W . 10th St. between Thomas Ave . S . W .
and Lind Ave . S . W.
Chairman Ross requested staff review. Assistant Planner
Smith pointed out the ten acre parcel located in Earling-
ton Industrial Park on the map and noted the area is zoned
M-P . Proposed construction is for an office , steel fabri -
cation and warehouse facility . Mr. Smith displayed views
of the elevation of the proposed 39 foot high facility
and described landscaping plans .
iP
Renton Planning Commission
Meeting October 9 , 1974
Page Seven
existing vegetation should be maintained and that re-
quiring a performance bond was consistent with previous
Commission action with regard to landscaping .
On the amendment , MOTION CARRIED, MORRISON DISSENTING.
Further discussion ensued with Mola expressing concern
with regard to provisions for some type of safety bar-
rier with relation to the future SR-515 route . It was
noted by the Planning Director that condition number
three of the original motion , which states " that the
Planning Department may upon periodic inspection re-
quire additional screening at the site , especially
with reference to the west property line and the
future SR-515 route , " provides for that design review .
However , it was indicated by Mola that it was his opin-
ion that a definite requirement for review should be
stipulated , and the following amendment was offered .
ACTION:
MOVED BY MOLA , SECONDED BY SEYMOUR, THAT CONDITION
NUMBER THREE OF THE ORIGINAL MOTION BE AMENDED TO
READ AS FOLLOWS:
THE PLANNING DEPARTMENT MAY UPON PERIODIC INSPEC-
TION REQUIRE ADDITIONAL SCREENING AND SAFETY DEVICES
AT THE SITE, ESPECIALLY WITH REFERENCE TO THE WEST
PROPERTY LINE AND THE FUTURE SR-515 ROUTE. "
A roll call vote was requested with the following
results :
HUMBLE - AYE
GIBSON - AYE
MOLA - AYE
MORRISON - NO
ROSS - ABSTAIN
SCHOLES - AYE
SEYMOUR - AYE
TEEGARDEN - NO
WIK - NO
In view of the tie results , the Chairman cast his vote .
Ross voted NO, AND THE MOTION WAS DEFEATED.
On the original motion , with first amendment , THE MOTION
CARRIED UNANIMOUSLY.
Commissioners Teegarden and Gibson thanked the represen-
tatives of Washington Natural Gas Company for their forth-
right manner in answering the questions .
A recess was declared at 9 : 50 p . m. The meeting was resumed
at 10 : 05 p . m. , with all members noted as being present .
4 • NEW PUBLIC HEARING ITEMS :
PEZfNE
A, PUGET SOUND POWER AND LIGHT CO . ; Appl . No . R-792-74 ;
rezone from S- 1 to L- 1 ; property located on Grady
Way at Talbot Road .
The Chairman invited a presentation from the Planning
staff.
t'
Renton Planning Commission
Meeting October 9 , 1974
Page Nine
The Chairman invited comment from the Commissioner. Gib-
son requested that data be provided regarding potential
noise . The Planning Director advised that there are
performance standards concerning noise in the M-P zone .
Scholes asked for specific information in the form of
a statement from Ryerson as to what type of work will
be performed at the facility. He also expressed con-
cern regarding the proposed 39 foot height of the struc-
ture and was advised that the use of overhead cranes
made that height necessary .
Scholes inquired about the outside area behind the
building and its intended use . Mr . Smith stated that
they have indicated that it may be for future expansion
or sale and that the landscape screening was planned
with that consideration .
Responding to Morrison , Mr . Smith advised that there
lis a railroad spur into the property and that materials
will be delivered by truck as well .
Teegarden inquired if the proposal is a permitted use
in an M-P zone . He also requested information as to
the surfacing planned for the vacant area behind the
building and also asked for further information regard-
ing the nature of the operation and how materials will
be handled .
5• ADMINISTRATIVE :
A. FIELD TRIP
It was MOVED BY SCHOLES , SECONDED BY MOLA , THAT COM-
MISSION MEMBERS WILL CONDUCT A FIELD TRIP ON AN
INDIVIDUAL BASIS . MOTION CARRIED .
B. COMMITTEE REPORTS
The Chairman called for committee reports .
COMMUNITY SERVICES COMMITTEE
Commissioner Scholes , Chairman , advised that the
Committee has met and studied the matter of aban-
doned service stations and artificial planting
materials . He announced a meeting to be held Wed-
nesday , October 16 , at 7 . 30 p . m.
COMPREHENSIVE PLAN COMMITTEE
Commissioner Humble , Chairman , announced a meeting
to be held October 16 with regard to the Comprehen-
sive Land Use Plan .
ZONING COMMITTEE
Commissioner Mola , Chairman , announced a meeting to
be held October 16 with regard to L- 1 and H-1 zoning .
SPECIAL MEETING - OCTOBER 16, 1974
The Chairman announced a special meeting to be held
at 7 : 30 p . m. , October 16 , to review the ordinance
and by-laws concerning the Planning Commission and
parliamentary procedure .
It was decided that all committee meetings would
follow the conclusion of the above meeting .
p
Renton Planning Commission
Meeting October 9 , 1974
Page Ten
C. OTHER
W. STEWART POPE - APPLICATION FOR COMPREHENSIVE LAND USE
PLAN AMENDMENT
The Planning Director advised that Mr. Pope has appealed
the decision of the Planning Commission , and a public
hearing has been established by the Council for Octo-
ber 21 , 1974. Commissioner Gibson requested that Mr .
Ericksen include in his presentation to the Council
reference to the interest in annexation of a number
of King County residents in the area .
MINUTES - MEETING OF SEPTEMBER 25, 1974
A brief discussion ensued regarding the opportunity for
adequate review of the minutes , and it was MOVED BY TEE-
GARDEN , SECONDED BY MORRISON , THAT APPROVAL OF THE MIN-
UTES OF SEPTEMBER 25 , 1974 , BE DEFERRED TO THE NEXT
REGULAR MEETING BUT THAT A COPY OF THE MINUTES AS WRITTEN
BE PROVIDED THE COUNCIL FOR THEIR INFORMATION . MOTION
CARRIED .
RETIREMENT - CLARK TEEGARDEN
The Commission congratulated Commissioner Teegarden on
his recent retirement and wished him well .
As there was no further business before the Commission , IT WAS
MOVED BY HUMBLE , SECONED BY SCHOLES , THAT THE MEETING BE ADJOURNED.
MOTION CARRIED .
The meeting was adjourned at 11 : 15 p . m.
rry Gi etary
Norman Ross , Chairman
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northwest environmental technology laboratories, inc. *--
300- 120th avenue n.e., bldg.2 suite 108,bellevue,weshington 98005,(206) • • ' --..,
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northwest environmental technology laboratories, inc.
300- 120th avenue n.e., bldg. 2 suite 108, bellevue, Washington 98005, (206) 455 - 3570
NETL Job No. 108-74-094 OCTOBER 23, 1974
NOISE MEASUREMENTS
AND
ASSESSMENTS
FOR THE
RYERSON FABRICATION PLANT
PREPARED FOR
MOORE , WALLACE AND KENNEDY, INC.
1915 FIRST AVENUE
SEATTLE , WASHINGTON 98101
NOISE MEASUREMENTS
The City of Renton requires an assessment of the expected impact
of the proposed facility on the noise environment. To determine noise
impact , measurements were made at the existing facility which is to be
relocated on S.W. 10th Street in Renton, Washington. The same equipment
will be relocated in the new facility and the new facility will be
constructed of six inch concrete tilt-up wall , which will replace a structure
made of corrugated metal over a post and beam framework.
Sound level measurements were conducted at the existing site on
October 22, 1974, at two locations designated as Site I and Site 2. Site 1
was located 34 feet from Bay 4 of the main building between the office
building and the main plant. This location was 58 feet from the main doorway
into Bay 2.
Site 2 was located 50 feet south and 28 feet east of the northeast
corner of the building.
The purpose of these measurements was to ascertain ambient noise levels
which are a result of the fabrication processes going on within the building.
It was determined that unavoidable extraneous background noise, external to
the manufacturing processes under investigation was also measured. Such
noise arises from other manufacturing facilities, jet airplane noise, and
heavy vehicular traffic.
Sound levels were measured using a General Radio 1933 Sound Level
Meter which was calibrated with the General Radio Type 1562A Sound Level
Calibrator. Three types of sound level measurements were made. During the
course of the measurements the octave average levels and peak levels were
noted. These data are presented in Table I . Measurements were also made
on the A weighted scale; these were recorded continuously on FM magnetic
tape using a TC124 Recorder operating in conjunction with an NETL 1173 Modem.
Each data run obtained in the field was recorded on magnetic tape and
subsequently reduced in the laboratory. This involved demodulating the
recorded data and hand-digitizing the results and converting these data to
the levels of sound which are exceeded 10%, 50%, and 90% of the time
L10, L50, and L90 respectively) . Table II lists the reduced noise level
TABLE I
Octave Band Average Noise Level dB Peak Noise Level dB
Center Frequencies Site 1 Site 2 Site 1 Site 2
31 .5 67 68 78 73
63 71 69 74 73
125 70 69 71 70
250 69 56 76 60
500 62 52 67 54
1000 59 47 63 52
2000 56 51 68 56
4000 49 45 65 48
8000 47 32 49 37
16000 32 20 34 25
TABLE II
Site Measured Noise Level dBA
L10 L50 L90
1 68 64 62
2 64 59 57
measurements for the L10, L50, and L90 statistical descriptors. The
following information is given to acquaint the reader with the meaning of
the L measurements , so that interpretations can be made on the reported results.
Man 's subjective response to noise is determined by the sound level
emanating from the source of noise and the frequency spectrum of noise. In
the event of a proposed new facility, it is important to consider the increase
of noise from pre-existing levels. The assessment of noise impact requires
a consideration of several factors which influence the psychoacoustical
impact at particular locations.
The impact of noise on a community is based on a measurement which
represents the level of sound weighted in accordance with the apparent
loudness perceived by an average human observer. This number is expressed
in A-weighted decibels and is written as dBA.
Because of its inherent variability, noise must be considered as a
statistical entity. Steady noise levels are rarely observed and, because
of the time varying characteristics of environmental noise, it is necessary
to provide a statistical descriptor indicative of the dBA level which is
exceeded a specified percentage of the time. The three most commonly used
percentile levels are:
1) Lg0 (the ninety-percentile level ) -- L90 is the sound level in dBA
which is exceeded 90 percent of the time. L90 compares well with
the minimum levels read with a sound level meter and is representa-
tive of the quietest noise levels present.
2) L50 (the fifty-percentile or median level ) -- L50 is the sound level
in dBA which is exceeded 50 percent of the time. That is to say
50 percent of the time the noise is louder than the value indicated.
In the absence of loud peaks, such as a distant highway with a
uniform traffic flow, the L50 provides a satisfactory measure of
subjective response to noise impact .
3) L10 (the ten-percentile level ) -- L10 is the sound level in dBA
which is exceeded 10 percent of the time, and is the parameter of
measurement and prediction most often discussed . L10 is an indicator
of short-duration high-level sounds which often cause annoyance.
This is the design level listed in Table III in relation to specified
land use categories , and is an indicator of both the magnitude and
the frequency of occurrence of the loudest noise events.
TABLE III
DESIGN NOISE LEVEL/LAND USE RELATIONSHIPS
Land Use
Design Noise Design Noise
Category
Level - Leq Level - L10 Description of Land Use Categories
A2 57 60 Tracts of land in which serenity and quiet are of
exterior) exterior) extraordinary significance and serve an important
public need , and where the preservation of those
qualities is essential if the area is to continue
to serve its intended purpose. Such areas could
include amphitheaters , particular parks or portions
of parks , or open spaces which are dedicated or
recognized by appropriate local officials for
activities requiring special qualities of serenity
and quiet .
B2 67 70 Residences , motels , hotels , public meeting rooms,
exterior) exterior) schools , churches , libraries , hospitals , picnic
areas, recreation areas, playgrounds , active sports
areas, and parks.
C 72 75 Developed land, properties or activities not include:
exterior) exterior) in Categories A and B above.
p For requirements on undeveloped lands see paragraphs
5a (5) and (6) of PPM 90-2.
E3 52 55 Residences , motels , hotels , public meeting rooms,
interior) interior) schools , churches , libraries , hospitals and
auditoriums.
U .S . Department of Transportation , 1974)
Table III lists the L10 noise levels applicable to the various design
land use categories . This table is a' guideline promulgated by the U.S.
Department of Transportation.
Table IV indicates the applicable Renton noise regulations which would
relate to the proposed project. Extrapolating the octave band measurement
data contained in Table I to conditions expected at the new site, there are
two adjustments to make. One adjustment will be that due to distance to
the nearest property line at the new site of approximately 10 dB. Additionally,
because of the difference in materials , first assuming transmission only
through the walls, there will be a further reduction of about 11 dB in sound
level . Because of the fact that the new facility will operate with some of
the doors open, it is assumed that this reduction will be about 5 dB. From
the foregoing, it is concluded that a 15 dBA reduction can be applied to
the measurement results contained in Table I .
Based on these estimates and taking into account that there will be
residual noise levels present which result in an over prediction of noise,
it is concluded that the proposed facility will satisfy the Renton noise
ordinance and provide an acceptable noise impact on the community.
TABLE IV
RENTON NOISE ORDINANCE
Frequency Band in Sound Pressure Level
Cycles/Second in db re 0.0002 microbar
Below 75 72
75 - 150 59
15o - 300 52
300 - 600 46
600 - 1200 42
1200 - 2400 39
2400 - 4800 34
Above 4800 32
Maximum allowable daytime levels. Noises originating from and
due to normal daytime activities in the M-P District shall conform to the
levels shown in the foregoing table at least ninety percent (90%) of the
time between the hours of seven A.M. (7 :00 A.M.) and eight P.M. (8:00 P.M.) .
Exceptions. None of the foregoing provisions shall apply to noises
resulting from the operation of motor vehicles. Other exceptions are the
occasional infrequent situations arising out of research and development
work carried out in the M-P District ; the temporary construction earth-
moving, road-building and related activites necessary to development ,
improvement and maintenance of manufacturing part facilities, which shall be
limited to the hours between seven A.M. (7:00 A.M.) and eight P.M. (8:00 P.M.)
and noises incident to operations in areas surrounding an airport, heliport,
or landing field where such areas come under the M-P District .
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