ML20235R562
| ML20235R562 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 10/02/1987 |
| From: | Tocci G CAVANAUGH TOCCI ASSOCIATES, INC., MASSACHUSETTS, COMMONWEALTH OF |
| To: | |
| Shared Package | |
| ML20235R461 | List: |
| References | |
| OL, NUDOCS 8710080106 | |
| Download: ML20235R562 (26) | |
Text
. _ _ _ _.
l t
c
(
i 1
Dated:
October 2, 1987
)
UNITED STATES OF AMERICA
/'
1 NUCLEAR REGULATORY COMMISSION
/
i before the ATOMIC SAFETY AND LICENSING APPEAL BOARD
)
In the matter of
)
)
PUBLIC SERVICE COMPANY OF
)
Docket Nos.:
50-443-OL NEW HAMPSHIRE, et al.
)
50-444-OL
)
(Seabrook Station, Unita 1 and 2
) (On-Site Emergency Planning
)
and Safety Issues)
)
)
AFFIDAVIT OF GREGORY C. TOCCI I, Gregory C. Tocci, do depose and say as follows:
1.
I am President and Principal Consultant of Cavanaugh Tocci Associates, Inc., Consultants in Acoustics, 327 F Boston Post
- Road, Sudbury, MA, 01776.
I and my
- partner, William J.
Cavanaugh, began this firm in 1975 and have continuously provided consulting services in the areas of architectural, environmental, and industrial acoustics since that time.
While with Cavanaugh Tocci Associates, Inc., and in previous professional employment, I have had extensive experience with environmental noise measurement and analysis.
8710000106 871002 PDR ADOCK 05000443 i
G PDR
'4 h
My professional. credentials include registration as a
Professional Engineer in the Commonwealth of Massachusetts, Member of the Acoustical Society of America, Member of the Institute.for Noise Control Engineering, President of the National' Council of Acoustical Consultants, Past Chairman of
~
~
the Greater Boston Chapter of Acoustical
- Society, and membership in various other technical organizations.
My educational credentials include a Bachelor of Science-degree (1970) from Tufts University and a Master of Science degree (1973) from Massachusetts Institute of Technology.
I am currently a member.of the faculty of the New England School of Art and Design where I teach Architectural Acoustics and have lectured in the Environmental Control Course (ESP 254d) at the Harvard School of Public Health.
(Copy of resume attached in Exhibit 1).
2.
Cavanaugh Tocci Associates, Inc. has been retained by the Commonwealth of Massachusetts, Department of the Attorney f
- General, to assess conformance of the Seabrook emergency siren signal system coverage with the coverage criteria presented in U.S. Nuclear. Regulatory Commission Report Number NUREG-0654 (FEMA-REP-1)
Criteria for Preparation and l
l Evaluation of Radiological Emercency
Response
Plans and Preparedness in Succort of Nuclear Power Plants and other l
l related guidelines.
l I
2 j
t
I 4
Our services have involved measuring ambient sound levels at I
four locations in Merrimac, MA shown in the siren coverage i
i map as having siren sound pressure levels less than 60 dB.
Locations selected are all residential dwellings located at the following addresses:
23 South Pleasant Street 16 High Street 25 River Road j
l 64 Bear Hill Road i
Houses selected were not solitary dwellings, but were each
]
part of groups of houses shown in the siren coverage map as I
falling outside the 60 dB coverage zones.
Ambient sound levels measured at each location are representative of i
ambient sound levels at other houses in the vicinity of each measurement location.
3.
Ambient sound pressure level includes sound produced by distant
- traffic, wind blowing through
- foliage, and miscellaneous neighborhood activities.
Referring to ambient noise measurement does not imply the use of any specific type of noise descriptor nor method of time averaging.
In quantifying ambient sound pressure level a descriptor must indicate:
time Interval over which sound was measured; any frequency weighting or filtering used; sound level meter averaging time; sound level sample averaging or processing method.
Without the specification of all four of the above
- features, I
3 i
l I
a criterion or a measure of sound is ambiguous.
- 4. Prior to our conducting noise measurements aimed at quantifying ambient sound pressure levels, we investigated a number of publications and reports pertinent to the Seabrook Emergency Siren System in order to determine the four above mentioned features of the descriptors needed to quantify ambient sound pressure level.
With respect to each
- feature, I
have determined the following from various written materials pertinent to this case:
Time Interval Item 3f of NUREG-0654 indicates that sirens should achieve a sound pressure level 10 dB above the
" average daytime ambient background" sound pressure level in the frequency band containing the siren signal frequency.
Similarly, FEMA-REP-10 refers to a " daytime average."
Daytime generally refers to the time period beginning at 7:00 AM and extending to 6:00 PM to 10:00 PM depending on descriptor or criteria being used.
It is not clear whether these publications intend on processing of sound data continuously over the long
" daytime" period or processing of sound data over one or more shorter intervals within the daytime period which are representative of sound levels during that period.
- Normally, it is preferred to divide a daytime period into small time intervals in order to obtain some j
perspective on how ambient sound varies through the day.
4 i
q Wyle. Laboratories, letter dated September 4, 1987-from John R.
Stearns to Mr. Travis N.. Beard, New Hampshire Yankee Division. of. Public Services of New Hampshire-presents-single ambient sound levels measured in-11 minute intervals at several locations in
- Merrimac, MA.
Even on an intuitive basis, a single'15 minute sample of ambient noise can not adequately quantify ambient sound occurring over a daytime period.
This brief sampling period does not account for the usual variation of ambient sound through the course of a day.
- Moreover, a
single 15 minute sample on one day does not exhibit day-to-day, weekday-to-weekend, and season-to-season variations in ambient sound level.
The HMM Associates Final Report assessing the conformance of the siren system with pertinent guidelines and regulations uses a
half-hour time interval for quantifying ambient sound pressure level.
This report presents a discussion of sampling time interval relative to siren
- duration, but neither this nor any other publication, attempts to identify interval time duration for ambient sound measurements.
In performing sound measurements for the Department of the Attorney General, we have reasoned that a
person should respond to a siren warning within five minutes, so J
that whatever descriptor of ambient sound level is used 5
l
\\
should be measured over a five minute interval.
In addition, monitoring ambient sound in 5 minute intervals provides some perspective on the variation of ambient sound over the 15 minute and 30 minute intervals used by Wyle and HMM respectively.
More importantly, Cavanaugh j
Tocci Asso iates, Inc.
has measured ambient sound
}
pressure levels continuous 1v in 5 minute intervals at all i
four above indicated locations from Wednesday, September 23, 1987 to Sunday, September 27, 1987.
This has allowed us to clearly evaluate ambient sound level variations on 1
a hour-to-hour, day-to-day, and weekday-to-weekend basis.
Although our measurement activities do not document seasonal ambient sound level conditions, sound levels were conducted on breezy days with trees fully foliated.
l It is presumed the ambient sound levels during the summer with the same weather conditions could be noisier because on insect sound.
It is also presumed that ambient sound levels during the winter with snow cover would be lower than measured in September.
- Hence, measured ambient sound levels measured by our firm as the four locations i
in Merrimac probably do not reflect unusually quiet or I
unusually noisy conditions.
I I
Filterina As noted above, Item 3f of the NUREG-0654 publication I
l Indicates that ambient sound levels are to be measured in j
the frequency band containing the siren tone.
Neither i
l this nor the FEMA-REP-10 publication specify the 6
_ _____ a
4 n
W.
c y,
p.
i frequency bandwidth appropriate for filtering l ambient
. yle
]
sound.-
I agree with reasoning presented by both W
1 l
/
Laboratories and HMM Associates that one-th'rd octave i
band filtering is appropriate for siren audibility studies.
As explained by Kryter, human perception of puretones in the frequency range containing the siren puretone is related to.the puretone-level relat.Tve to the j
l masking (ambient) level in the one-third octave frequency 1
band containing the puretone frequency.
l Based on the Wyle final report, we have understood that i
l the siren tone occurs at 680 Hz and therefore falls into the 630 Hz one-third octave band frequency band.
Meter Averacina Time Nowhere is there given an appropriate meter'; averaging time.
Meter averaging time is a measure of the response of a sound measurement instrument displays to variationsi 7, 1
I in sound pressure level.
Current standards for sound measurement instrumentation define two meter averaging times: SLOW (1 second averaging time) and FAST (0.05 sec.
averaging time).
Unless there is specific interest in high transient sound levels, SLOW sound level meter averaging is nearly always used in environmental studies.
It is presumed that data presented by Wyle and HMM were gathered using SLOW sound level meter averaging and that it is the intention of pertinent guidelines that SLOW 1
7 I
I
)
,(
sound level meter averaging be used.
Amb.jent sound level measurements conducted by Cavanaugh Tocci Associates, Inc, used SLOW sound level meter averaging.
- Actually, for the sound level'descriptors of
- concern, I
little difference is expected between the use of SLOW and FAST sound level meter averaging time.
f Sound Level Samolg Engeessinq r
(
\\
Regulations andi other materials reviewed relevant to,
siren audibility assessment quantify ambient sound as percentile exceeded sound pressure levels.
Two specific percentilg levels havs been cited:
The L90, i.e.
the sound pfessure level onkeeded 90% of a stipulated time
/
interval and sometime :[eferred to as the background sound
- level, and the L50, i'.a.
the median sound level or the sound level exceeded 50% of a stipulated time interval.
Part of the confusion in this study is that
- the, time intervn1 for these percentile levels is not specified.
do important is the time interval that cuncent standards require expressing these descriptors as Lga (30 min.)
or 50 (15 min.)
for example.
Among the descriptors L
measured by Cavanaugh Tocci Associates, Inc. are the
+L90 (5
min.)
and the L50 (5 min.) in the 630 Hz one-third octave band as discussed.
The NUREG 0654 publication does mention " daytime average backgroundsoundle/e1."
This is confusing since average usually implies 30th percentile sound
- levels, whereas F
8
\\.
xx
background implies 90th percentile sound levels.
In our studies we have opted to use 50th percentile sound levels iv e
recommended by HMM Assod4atNs in their Final Report as dated January 1984 (see Exh[b4t 2 for excerpted pages from this report).
In
- summary, Cavanaugh Tocci Associates, Inc.
has carefully reviewed existing standards and Seabrook siren studies to develop an ambient sound level = measurement plan which responds as best as possible to the intentions of siren audibility regulations.
In as far as we can, we have adopted the methods and reasoning of previous investigators, and where we felt necessary, we have developed and expanded the measurement plan beyond those of earlier investigators.
5.
Two of the four syste ms used to monitor sound levels at the 5
four above mentioned residential locations were composed of a 1" microphones outfitted with windscreens and cable cornected to Quest Sound Level Meters outfitted with one-third octave band filters set to 630 Hz.
The output signal from the Quest 1
Sound Level Meters were analyzed by Digital Acoustics DA607P Community Noise Analyzers which produced strip chart records in 5
minute intervals.
The third system used a 1"
GenRad Microphone and Preamp which was outfitted with a windscreen and was cable connected to a GenRad 1654-A Sound Level l
Analyzer.
This device is equipped with third octave band filters and was set to the 630 Hz one-third cctave band.
The 9
signal from this device was analyzed by a Digital Acoustics 607P' Community Noise ~ Analyzer which was also set to produce a strip chart record of sound level descriptors in five minute intervals.
The fourth instrumentation system used a Bruel Kjaer 1/2" Microphone and Preamplifier outfitted with a
windscreen and connected to a Bruel & Kjaer 2231 Sound Level Meter outfitted with"a one-third octave band filter set.
This device was capable of'directly measuring environmental noise descriptors which were printed using a Qume dot matrix printer.
This device printed noise descriptors in 5.40 minute intervals.
All devices were calibrated beforehand with a
GenRad 1562-A Sound Level Calibrator or a
Bruel Kjaer Sound Level Calibrator.
All four instrumentation systems conform with ANSI Standard S1.4 for Type 1 Precision Sound Measurement Instrumentation.
6.
Air temperature during all sound measurements ranged between 0
55 F and 75 F.
Estimated wind velocities at the microphones i
ranged from 0 to 15 mph.
Wind velocities at treetop appeared 1
to be as high as 20 to 25 mph.
)
i l
s 7.
Measured 630 Hz one-third octave band L90 (5 min.) and L50 (5 min.) sound levels were in the following ranges for extended daytime periods:
..y 10 i
A_
]
Ranges of Measured
- Daytime (Daylight Hours) j Ambient Sound Pressure Level in the 630 Hz One-third Octave Band j
LOCATION L90 (5 min.)
L50 (5 min.)
j 1
1 l
25 River Road 37 - 42 dB 40 - 45 dB 1
l 23 South Pleasant Street 38 - 43 dB 40 - 45 dB j
l i
16 High Street 43 - 48 dB 45 - 50 dB i
i I
64 Bear Hill Road 30 - 35 dB 35 - 40 dB Measured between Wednesday, September 23, 1987 and Sunday, September 27, 1987 q
Sound Levels at South Pleasant Street and High Street were j
significantly affected by I-95 traffic.
Sound levels at High Street may have been affected during weekday periods between 1
10:00 AM and 4:00 PM by floor refinishing in a remote room of j
i the house shielded from the microphone location.
Sound levels at River Road and Bear Hill Road were dominated by foliage noise and noise from distant highway traffic.
1 Sound level ranges given in the above table are based on my
]
quick review of data strip charts and is intended to represent ranges of level into which ambient sound levels consistently fell.
A report fully detailing noise measurements and instrumentation, and presenting L90 (5 min.)
and L (5 min.) data collected is forthcoming.
50 l
l 11
1 Signcd under the penalties of perjury this first day of
- October, 1987.
CNfN '
N G'rsg ry C.
T ci 1
i I
l l
i I
i 12
.___-_-____--_-____a
Exhibit 1 1
GREGORY C. TOCCI Education:
Tufts University, B.S.,
1970 Massachusetts Institute of Technology, M.S.,
1973 Professional Member, Acoustical Society of America Affiliations:
Past
- Chairman, Greater Boston Chapter of the Acoustical Society of America President, National Council of Acoustical Consultants Member, Institute of Noise Control. Engineering
- Member, American Society of
- Heating, Refrigerating and Air Conditioning Engineers Registration:
Professional Engineer in. Massachusetts Experience:
Summers 1966, 67, 68 Alonzo B.
Reed Inc.
1 HVAC System Designer / Draftsman o.ile attending Tufts University, Mr.
Tocci worked as an HVAC Oystem Designer / Draftsman and was responsible for the preparation of building project drawings for a number of educational and coamercial office buildings.
June 1970 - August 1971 U.S.
Army Materials and Mechanics Research Laboratory Mechanical Engineer Mr.
Tocci was involved with the analysis of the ballistic impact properties of fabrics.
His work involved ballistic test design and theoretical and numerical analysis of ballistic / fabric impacts.
September 1971 -
February 1973 l
Massachusetts Institute of Technology j
Research Assistant j
While earning a Masters of Science Degree at the Massachusetts Institute of Technology, Mr.
Tocci was awarded a
research assistantship in the Acoustics laboratory of the Mechanical Engineering Department.
His research activities were supported by the National Science Foundation and involved exploring the use of geometric acoustics in architectural flanking sound transmission problems and the use of auto correlation for measuring sound absorptive properties of surfaces.
L-ICl
February 1973 - December 1974 Cambridge Collaborative, Inc.
Staff Consultant While with Cambridge Collaborative, Mr.
Tocci' assisted in several engineering research projects in the transportation and industrial acoustics areas.
Among the programs in which he provided assistance area state-of-the-art evaluation of floating slab techniques for structureborne sound isolation of rail transit lines, assessment of sound radiation from elevated rail structures, and noise control for a
commercial newspaper folding machine.
Mr.
Tocci's responsibilities included designing and managing acoustical measurement programs and assisting in data analysis and report preparation.
January 1975 - August 1975 Cavanaugh Copley Associates Staff Consultant Cavanaugh Copley Associates was a joint venture between two individual consultants.
Mr.
Tocci was employed to manage all technical and financial aspects of projects awarded to the partnership.
Among the projects in which he was involved were the preparation of an environmental impact statement for the Interstate 93 extension through Franconia Notch, NH the environmental impact report for the extension of the MBTA Orange Line to Reading, MA, and mechanical system noise and vibration control for the University of Minnesota Health Science Expansion.
September 1975 - Present Cavanaugh Tocci Associates, Inc.
President / Principal Consultant Mr. Tocci and Mr. William J.
Cavanaugh, after the disassociation of Cavanaugh Copley Associates, joined together to form Cavanaugh Tocci Associates in September 1975.
Since this
- time, l
the firm has provided engineering consulting in a l
wide range of architectural, environmental, and l
industrial acoustics projects.
Besides having full responsibility for all technical aspects and communications concerning
- projects, Mr.
Tocci manages all business matters for Cavanaugh Tocci Associates, Inc.
Among the variety of projects which he has managed are the following:
7 i
1 Codex Corporation Headquarters Canton, MA (General Office Building, Mechanical System Noise and Vibration Studies)
Animal Research Facilities Massachusetts Institute of Technology Cambridge, MA (Provided construction noise impact assessment for audiogenic seizure prone laboratory animals)
Miscellaneous studies for compliance with HUD Site Acceptability Standards for residential j
construction MBTA Track Rehabilitation Program j
Boston, MA i
(Noise and vibration impact analysis and recommendations for track rehabilitation on 40% of the MBTA system)
Seven Schools Noise Abatement Program Logan International Airport, Boston, MA (The development of noise control recommendations and review of
- design, shop
- drawings, and installation of glazing and other treatments for schools affected by aircraft noise')
Construction Noise and Vibration Control Studies MBTA Red Line Extension Northwest, Boston, MA (Development of recommendations for controlling construction noise as required by the MBTA Construction Noise Control Specification in the project documents)
James River Graphics Hadley, MA (Developed recommendations for the control of noise and vibration needed to reduce coating chatter)
Educational:
Mr. Tocci has presented lectures at corporate and organizational meetings of various topics in i
acoustics.
In addition, he is a member of the Adjunct faculty for the New England School of Art and Design where he has taught architectural acoustics since 1979 and is a lecturer at the 1
Harvard School of Public Health where he teaches industrial acoustics.
1 6
ies 1
4
--a
Lecture Presentations:
Among the presentations he has made-to society.
and corporate groups are the following:
" Design Concepts for Sound Isolation Glazing" California Association of Window Manufacturers June 12, 1987 Sacramento, CA
" Glazing Products and Sound Isolation Performance" EFCO Corporation Engineering Staff Seminar June 11, 1987 Monet, MO Glazing Sound Transmission Loss Studies Paper 07, llith meeting of the Acoustical Society of America May 14, 1987 Cleveland, OE
" Topics in Rooftop Mechanical System Vibration Isolation" Boston Chapter /American Society of
- Heating, Refrigerating and Air Conditioning Engineers January 28, 1987 Medford, MA
" Concepts in Speech Privacy" GF Business Equipment National Meeting of General Managers July 26, 1983
'l Youngstown, OH "Open Plan Speech Privacy Analysis" Philadelphia Electric Company Facilities Department February 9, 1983 Philadelphia, PA
" Wind Farm Noise" Paper A8, 101 meeting of the Acoustical Society of America May 19, 1981 Ottawa, Ontario, Canada
" Protecting Harvard University Buildings from construction Noise" Paper JJ10, 99th meeting of the Acoustical Society of America j
April 25, 1980 1
Atlanta, GA i
(::I25
_.__.m._-_._.___.m._._
m
I
" Construction Noise Control for a Major Urban Rail Rapid Transit Line Extension" Paper P7, 98th meeting of the Acoustical Society of America November. 29, 1979 Salt Lake City, Utah General Electric Company Plant Manager Seminar Harvard School of Public Health June 28, 1979 Boston, MA 02115
" Acoustic Modeling of
'Close-Proximity' Rail Transit Noise Barriers" Paper DDS, 94th meeting of the Acoustical Society of America December 15, 1977
, Miami, FL
)
US Department of Health Education Welfare Program Tufts University November 4, 1976 Medford,-MA
" Noise Propagation in Corridors" Paper D9, 83rd Meeting of the Acoustical Society of America April 9, 1972 Buffalo, NY Publications:
"Monsanto Acoustical Glazing Design Guide" Monsanto Polymer and Chemical Co., St. Louis, MO
" Acoustic Performance of a 're-entrant' Axial Fan Intake Silencer" Gregory C. Tocci and Douglas H. Stir Noise Con 11_ Proceedings Cambridge, MA "A Perimetric Evaluation of Wind Turbine Noise" Gregory C. Tocci and Edward N. Marcus Internoise 11 Proceedinog San Francisco, CA
" Practical Applications of Outdoor Noise Control Barriers" Gregory C. Tocci and William H. Pickett Sound and_ Vibration, V13, No.6, June 1978 (Selected for the Vibraphonic Award for best paper published in Sound and Vibration in 1978 by Delaware Chapter of the Acoustical Society of America LufC i
l l
.e
" Paper Cutting Noise:
Source Identification Techniques in Newspaper Folding Machines" Jeffery Fredberg and Gregory Tocci Internoise 74 Proceedings Washington,"3C
" Measurement and analysis of. noise radiation from a slab on steel beam rapid transit structure" Gregory Tocci, Jeffery Fredberg, and Nagabhusan Senapati Internoise 74 Proceedings Washington,~5C
" Ballistic Impact of Textile Structures" David Roylance, Anthony Wilde, and Gregory Tocci Textile Research Journal, Volume 43, Number 1,
January 1973 Personal:
Mr. Tocci resides in Franklin, MA with his
- wife, Colleen M.
(McHugh)'Tocci, RN and their four children.
G
Exhibit 2 (contains cited portion of Final Design Report only)
SEABROOX STAT::ON PUBLIC ALE 3T AND NOTUICA'2::0N SYS".EM FINAL DESIGN REPORT t
I l
Prepared for l
PUBLIC SERVICE COMPANY OF NEW HAMPSHIRE g
Manchester, New Hampshire I
l January 1984 E
HMM Associates, Inc.
Concord, Massachusetts
i TABLE OF CONTENTS 5
l 1.
INTRODUCTION l
1.1 Description 1
1.2 Design Basis 1
1.3 Summary 2
2 2.
DESCRIPTION OF THE S' EABROOK STATION PLUME EXPOSURE EPZ 2.1 Topograpny 3
2.2 Climatology 3
2.3 D emog rapny 4
2.4 Amoient Noise 6
2.4.1 S ackground 9
2.4.2 Design Basis 9
9 2.4.3 Measurement Locations 10 2.4.4 Measurement Equipment gg 2.4.5 Measurement Sandwidth 10 2.4.6 Results 10 11 3
DESCRIPTION OF THE ALERTING SYSTEM 3.1 Design Criteria 15 3.2 Siren Locations 15 3.3 Description of Sirens 17 gl 3.4 19 Siren Coverage 3.4.1 Alert Tone 21 l
3.4.2 Voice 21 3.5 Siren Control 21 3.6 22 Emergency Alerting Radio Receivers 3.7 25 PuDlic Notification and Instructions i
Via Emergency Broaocast 3.8 28 Siren Activ~ation Sequence 29 I
I 1
I
TABLE OF CONTENTS (Cont'd) 3.9 Siren System Tests 30 3.10 Provisions for Alerting System Improvements, if Required 31 4
ANALYSES OF SYSTEM PERFORMANCE 32 4.1 Activation Time 32 4.2 Siren Coverage 33 APPENDIX A AMBIENT 8ACKGROUND NOISE LEVELS MEASURED IN THE SEABROOK EPZ A-1 APPENDIX B SIREN SITES IN NEW HAMPSHIRE (TABLE 1)
ANO,MASSACHUSET TS (TABLE 2) 6-1 APPENDIX C ORGANIZATIONS TO RECEIVE EMERGENCY ALERTING RADIO RECEIVERS C-1 l
l I
APPENDIX 0 SIREF COMPUTATION PROCEDURES USED FOR THE ANALYSIS OF SIREN COVERAGE 0-1 9
i j
l 11-1
I 1
l The background noise that contributes to the masking of a siren sound is contained in a relatively narrow frequency cand centered on tne frequency of tne predominant siren tone This l
cand, sometimes called the " critical cand," is very narrow:
typically 1/6 to 1/10 of an octave wide.
Filters for measuring the cackground noise in such a narrow cand are not readily availaole.
Tne sirens to ce installed around Seacrook Station I
will produce tones at 700 Hz.
Hence, the measurements reported nere were made witn an octave-band filter centered at 500 Hz
\\
'(i.e., a filter spanning tne range f rom 353 Hz to 707 Hz).
Because tne octave cand contains much more noise energy I
tnan the critical cand of interest, the measured data were converted to equivalent 1/3 octave band levels by subtracting 5
)
dB (i.e., 10 log (1/3)).
FEMA suggests the use of 1/3 octave cands for amoient noise measurements.U3 Of course, tne critical cand is even narrower enan 1/3 octave, so the data reported herein are somewnat nigher enan the actual cacxground noise of interest, and nence more conservative.
2.4.6 Results E
The data sheets from each of the seventeen measurement locations are given in Appencix A.
Tne data are in ene form of "L-levels."
Tne L is the level that was exceeded 10% of 10 the time during the 1/2-hour sampling period; ene L50 was l
exceeded 50% of tne time; tne L90, 90% of tne time; etc.
Tne maximum and minimum momentary levels that were caserved are also reported, along with tne equivalent level:
- t., q.
The L,q is the level of a hypothetical steady sound that would I
aav
"*a ta' **== '" rav ov'r ta na r-no"r a rioa "
t"*
actual, fluctuating noise.
Because sound is measured on a E
logarithmic scale, the L,q tends to be influenced by orief, intense noises.
[7] FEMA-43, " Standard Guide for the svaluation of Alert and Notification Systems for Nuclear Power Plants," Septemoer 1983 Section C.6.2.1, pp. E-6.
I g l l
l
l c
The data in Appendix A ' include the -5 dB correction to 1/3-octave-band levels.
,The levels observed at each mi*= *vnia=11v eman =-37.-'
30 d8 or more.
Tnis raises the ouestion as to which level in that range should be used as the maskino level.
An estimate that is often used is the L level.
This is called the 90
" residual" level, and it generally enaracterizes the background in ene aosence of orief transient noise sources like passing venicles.E83 For tne purposes of tnis study a more conservative value, the L is used.
Tne L50's are taculated on Tacle 2.3.
50, The Lan, or median level, could oe considereo recramen*a*4va of tne " average daytime level" used by FEMA in FEMA-REP-!
and FEMA-43.
For sirens operating 15 minutes or longer, the L 50
{
would estaclish the nignest possible masking level.
For sirens l
operating less than 15 minutes, there would be some chance of masking at nigner levels.
This enance would increase'as the siren duration decreased.
Examination of tnr. L levels on 50 Tacle 2.3 indicates that only one exceeds the 50 d8 " rural" 4
{
oesign level provided by FEMA /NRC, This is 53 dB at site #10
{
l in downtown Portsmoutn.
The site to clearly in an urcan area wnere FEMA /NRC's 60 d8 desigr. background level applies.
Three otner sites are worth mentioning.
I At site 3 in j
Salisbury, 50 dB was cbserved and c,t Site 8 in Seaprook A8 c8 I
was coserved.
Both sites are close to Interstate 95 and receive relatively steady traf fic noise from tnat source.
The siren system for these locations is designed for 60 dB (i.e.,
uroan) background noise.
Finally, at site 16 in downtown Exeter, 48 dB was observed.
Siren coverage in tnat area is also designed for a 60 c8 oackground.
At all other sites, tne L50 *as 45 dB or less.
In conclusion, tne background noise measurements confirm tnat the FEMA /NRC design levels are suitacle, and quite conservative.
(83 US EPA NTIO 300.3, " Community Noise," Decemoer 1971.
I ly 98LKEIED UNITED STATES OF AMERICA USNRC NUCLEAR REGULATORY COMMISSION 17 OCT -5 P3 '41
)
4FE!Of 6! M yfTt ^t 990KQi4GMfiNk In the Matter of
)
)
BRANCH PUBLIC SERVICE COMPANY OF NEW
)
Docket No.(s) 50-443/444-OL HAMPSHIRE, ET AL.
)
(Seabrook Station, Units 1 and 2)
)
)
)
CERTIFICATE OF SERVICE I,
Allan R.
Fierce, hereby certify that on October 2, 1987, I made service of the within documents, by depositing in the U.S. mail, first class postage paid, addressed to, oc as indicated
(*],
by mailing copies thereof with Federal Express, prepaid, for delivery to (or where indicated
[**],
by hand delivery to:
l
- Ivan Smith, Chairman
- Gustave A.
Linenberger, Jr.
Atomic Safety & Licensing Board Atomic Safety & Licensing Board U.S.
Nuclear Regulatory U.S.
Nuclear Regulatory Commission Commission East West Towers Building East West Towers Building 4350 East West Highway 4350 East West Highway Bethesda, MD 20814 Gethesda, MD 20814
- Dr. Jerry Harbour Sherwin E. Turk, Esq.
Atomic Safety & Licensing Board Office of the Executive Legal U.S.
Nuclear Regulatory Director Commission U.S. Nuclear Regulatory Commission East West Towers Building Tenth Floor 4350 East West Highway 7735 Old Georgetown Road Bethesda, MD 20814 Bethesda, MD 20814 H.
Joseph Flynn, Esq.
Stephen E.
Merrill Assistant General Counsel Attorney General Office of General Counsel George Dana Bisbee Federal Emergency Management Assistant Attorney General Agency Office of the Attorney General 500 C Street, S.W.
25 Capitol Street Washington, DC 20472 Concord, NH 03301
i* Docketing and' Service Paul A.
Fritzsche, Esq.
U.S.. Nuclear Regulatory Office of the Public Advocate Commission State House Station 112:
Washington, DC.
20555 Augusta, ME 04333 Roberta C'. Pevear Diana P.
Randall State' Representative.
70 Collins Street Town _of Hampton Falls Seabrook, NH 03874 Drinkwater Road Hampton Falls,.NH 03844 Atomic Safety'& Licensing Robert A..Backus, Esq.-
Appeal Board Panel Backus,.Meyer & Solomon U.S.
Nuclear Regulatory 116 Lowell Street l
Commission P.O. Box 516 Washington, DC 20555 Manchester, NH 03106 Atomic Safety & Licensing Jane Doughty Board Panel _
. Seacoast Anti-Pollution League.
U.S.
Nuclear Regulatory 5 Market Street Commission Portsmouth, NH 03801 Washington, DC 20555 Paul McEachern, Esq.
J. P. Nadeau Matthew T.
Brock, Esq.
Board of Selectmen
'Shaines'& McEachern 10 Central Road 25-Maplewood Avenue Rye, NH 03870 4
P.O. Box 360
'Portsmouth, NH 03801 a
Sandra Gavutis, Chairperson Calvin A. Canney Board of Selectmen City Manager RFD l, Box 1154 City Hall
')
Rte. 107 126 Daniel Street i
E.
Kingston, NH 03827 Portsmouth, NH 03801 l
Senator Gordon J.
Humphrey Angelo Machiros, Chairman U.S.
Senate Board of Selectmen Washington, DC 20510 25 High Road (Attn: Tom Burack)
Newbury, MA 10950 Senator Gordon J.
Humphrey Peter J.
Matthews 1 Eagle Square, Suite 507 Mayor Concord, NH 03301 City Hall (Attn:. Herb Boynton)
Newburyport, MA 01950 Donald E. Chick William Lord Town Manager Board of Selectmen Town of Exeter Town Hall 10' Front Street Friend Street Exeter, NH 03833 Amesbury, MA 01913 _ _ _ _ _
erentwood Board,of Selectmen Gary W.
Holmes, Esq.
RFD Dalton Road Holmes & Ellis.
Brentwood,.tni 03833 47 Winnacunnet Road Hampton, NH- 03841 Philip-Ahrens, Esq.
Diane Curran, Esq.
Assistant Attorney General Harmon & Weiss
. Department of the Attorney.
Suite 430 General 2001 S Street, N.W.
State House Station'#6 Washington, DC' 20009 Augusta, ME' 04333.
t
- Thomas G.
Dignan, Esq.
Richard A.
Hampe, Esq.
R.K. Gad III,.Esq.
Hampe & McNicholas Ropes'&-Gray 35 Pleasant Street-225 Franklin Street Concord, NH 03301 Boston, MA 02110 Beverly-Hollingworth Edward A. Thomas 209 Winnacunnet Road Federal Emergency Management Hampton, NH 03842 Agency 442 J.W. McCormack (POCH)
Boston, MA 02109 William Armstrong Michael Santosuosso, Chairman Civil Defense Director Board of Selectmen Town of Exeter Jewell Street, RFD 2 10 Front Street South Hampton, NH 03827 Exeter, NH. 03833 Robert Carrigg, Chairman Anne E. Goodman, Chairperson Board of Selectmen Board of' Selectmen Town Office 13-15 Newmarket Road Atlantic Avenue Durham, NH 03824 North Hampton, NH 03862 Allen Lampert Sheldon J. Wolfe, Chairperson Civil Defense Director Atomic Safety and Licensing j
Town of Brentwood Board Panel 20 Franklin Street.
U.S. Nuclear Regulatory Exeter, NJ 03833 Commission Washington, DC 20555 Dr. Emmeth A.
Luebke Charles P.
Graham, Esq.
Atomic Safety & Licensing Board McKay, Murphy & Graham U.S. Nuclear Regulatory Old Post Office Square Commission 100 Main Street East West Towers Building Amesbury, MA 01913 4350 East West Highway Third Floor Mailroom Bethesda, MD 20814 Judith H.
Mizner, Esq.
Silvergate, Gertner, Baker, Fine, Good & Mizner 88 Broad Street Boston, MA 02110 - - _ _ _ _ _ - - _ - - -_ _ - _ _ _
j
Rep. Edward J.
Markey, Chairman
- Alan S.
Rosenthal, Chairman U.S.
House of Representatives Atomic Safety & Licensing Subcommittee on Energy Appeal Board Conservation and Power U.S.
Nuclear Regulatory Commission Room H2-316 East West Towers Building House Office Building Third Floor Mailroom Annex No. 2 4350 East West Highway Nashington, DC 20515 Bethesda, MD 20814 Attn:
Linda Correia
- Gary J.
Edles
- Howard A. Wilber Atomic Safety & Licensing Atomic Safety & Licensing Appeal Board Appeal Board U.S.
Nuclear Regulatory U.S.
Nuclear Regulatory Commission Commission East West Towers Building East West Towers Building Third Floor Mailroom Third Floor Mailroom 4350 East West Highway 4350 East West Highway Bethesda, MD 20814 Bethesda, MD 20814 Allan R.
Fierde Assistant Attorney General Nuclear Safety Unit Department of the Attorrey Generel One Ashburton Place, Room 1902 Boston, MA 02108 (617) 727-2265 Dated:
October 2, 1987 4-