ML20141H235
| ML20141H235 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 12/31/1983 |
| From: | HMM ASSOCIATES, INC. |
| To: | |
| Shared Package | |
| ML20141G723 | List: |
| References | |
| 584, NUDOCS 8602260464 | |
| Download: ML20141H235 (112) | |
Text
{{#Wiki_filter:.- - . . _ _ - _ _ _ -_ , SEABROOK STATION PUBLIC ALERT AND NOTIMCATIOX SYSTEM i FINAL DESIGN REPORT I i I i Prepared for PUBLIC SERVICE COMPANY OF NEW HAMPSIIIRE Manchester, New Hampshire January 1984 1 , i HMM Associates, Inc. Concord, Massachusetts pgg22g0gpK 43 F PDR
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4 i PUBLIC ALERT AND' NOTIFICATION SYSTEM FOR-THE SEA 8R00K STATION' PLUME EXPOSURE EPZ
' DESIGN REPORT HMM Document.No. $84 December,_1983
.e Prepared for:
PUBLIC' SERVICE COMPANY OF NEW HAMPSHIRE Prepared by: HMM ASSOCIATES, INC. 336 Baker Avenue Concord, Massachusetts 01742
TABLE OF CON' TENTS Page
- 1. INTRODUCTION 1 1.1 Description 1 1.2 Design Basis 2 1.3 Summary 2
- 2. DESCRIPTION OF THE SEABROOK STATION PLUME EXPOSURE EPZ 3 2.1 Topography 3 2.2 Climatology 4 2.3 Demography 6 2.4 Ambient Noise 9 2.4.1 Background 9 2.4.2 Design Basis 9 2.4.3 Measurement Locations 10 2.4.4 Measurement Equipment 10 2.4.5 Measurement Bandwidth 10 2.4.6 Results 11
- 3. DESCRIPTION OF THE ALERTING SYSTEM 15 3.1 Design Criteria 15 3.2 Siren Locations 17 3.3 Description of Sirens 19 3.4 Siren Coverage -
21 3.4.1 Alert Tone 21 3.4.2 Voice 21 3.5 Sirei) Control 22 3.6 Emergency Alerting Radio Receivers 25-3.7 Public Notificatiori and Instructions Via Emergency Broadcast 28 3.8 Siren Activation Sequence 29 L_
7 - 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 BACKGROUND NOISE LEVELS j MEASURED IN THE SEABROOK EPZ A-1 APPENDIX B SIREN SITES IN NEW HAMPSHIRE (TABLE 1) AND MASSACHUSETTS (TABLE 2) B-1 APPENDIX C ORGANIZATIONS TO RECEIVE EMERGENCY ALERTING RADIO RECEIVERS C-1 4 APPENDIX D SIREP COMPUTATION PRCCEDURES USED FOR THE ANALYSIS OF SIREN COVERAGE D-1 4 9 e ! e f e c
. LIST OF FIGURES
~ Figure , 2.1 Topographic Map of the Plume Exposure Pathway EPZ for Seabrook Station 2.2 Locations Where the Need for at least 70 dB(C) Coverage Has Been Assumed 2.3 Sites at Which Ambient Background Noise Was Measured 3.1 Locations of Sirens to be Used for Public Alerting in the Seabrook EPZ I 3.2 Areas Where Coverage is Estimated to be 60 d8(C) or More Within the Seabrook EPZ i 3.3 Areas Where Coverage is Estimated to be 70 dB(C) or More Within the Seabrook EPZ 4.1 Computed Sound Level Contours for Typical Summer Daytime Conditions (SE Wind) 4.2 Computeo Sound Level Contours for Typical Summer Nighttime Conditions (SW Wind) 4.3 Computed Sound Level Contours for Stormy Spring / Fall Conditions (" Northeaster"-NE Wind) 4.4 Computed Sound Level Contours for a " Blustery" Winter Day (NW Wind) -
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' LIST OF TABLES Table Py '
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' 2 .1 PASQUILL STABILITY CLASSES AND TEMPERATURE GRADIENTS 6
- 2.2 HIGHEST ESTIMATES OF SEASONAL PLUS PERMANENT RESI-DENTS.WITHIN 10 MILES OF SEABROOK STATION (1983) 8 f
2.3
SUMMARY
'0F AMBIENT BACKGROUND NOISE MEASUREMENTS IN THE SEABROOK EPZ 14 i l 2.3
SUMMARY
OF AMBIENT BACKGROUNO NOISE.MEASURCMENTS ! IN THE SEABROOK EPZ (CONTINUED) 15 1 3.1 SIREN RANGES UTILIZED FOR DESIGN, BASED UPON j' , SECTION C, 3, e OF APPENDIX 3 0F NUREG-0654 16 l l 3.2
SUMMARY
OF SIREN REQUIREMENTS BY SIREN TYPE, l COMMUNITY AND STATE 18 1 3.3
SUMMARY
OF LOCAL SIREN CONTROL POINTS REQUESTED BY NEW HAMPSHIRE COMMUNITIES 23 3.4
SUMMARY
OF LOCAL SIREN CONTROL POINTS l REQUESTED BY MASSACHUSETTS COMMUNITIES - 24 3.5 LIST OF ORGANIZATIONS TO RECEIVE EMERGENCY- , ALERTING RADIO RECEIVERS IN THE SEABROOK EPZ ! (NEW HAMPSHIRE) 26 i j 3.6 LIST OF ORGANIZATIONS TO RECEIVE EMERGENCY-ALERTING RADIO RECEIVERS'IN THE SEABROOK EPZ l (MASSACHUSETTS) 27 i - l 4.1 REPRESENTATIVE WEATHER CONDITIONS MODELED FOR SIREN COVERAGE ESTIMATES - 33 i
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- 1. INTRODUCTION 1.1 Description Public alerting and notification in the Seabrook EPZ will be accomplished through the activation of sirens, with simultaneous emergency messages broadcast by designated local radio stations. A public education program is underway and will be maintained to advise residents of and visitors to the EPZ that when the sirens are heard, they should tune to the designated radio stations for information about an emergency.
A total of 133 new electronic sirens will be installed in 4 the EPZ to perform the initial alerting function. These will be complemented by seven mechanical sirens recently installed in the City of Newburyport, MA. Sirens in the State of New Hampshire will be activated by radio from the Rockingham County Police Dispatch Center in Brentwood, New Hampshire. Those in
, Massachusetts will be activated from State Police Troop A Headquarters in Framingham, MA. The 23 cities and towns in the EPZ will also have the capability to activate the sirens within their boundaries, if necessary.
The electronic sirens to be installed will have a public-address capability. Along the public beaches from
- Newbury, Massachusetts, north through Hampton, New Hampshire, siren locations have been chosen so that the sirens can provide both an alerting tone and a public-address message to notify transient beach users who may not have immediate access to commercial radio receivers.
Supplementing the sirens, a total of 234 tone-activated radio receivers will be provided to institutions within the EPZ that may have to internally coordinate their response to an , emergency. These institutions, (schools, hospitals, major I employers, etc.) have been identified from the pertinent local l emergency plans. An additional quantity of tone-activated receivers will be available for distribution to isolated i residences if it is determined that alerting by siren must be _1_ 9
~ l supplemented, and where'the provision-of siren coverage.would-be uneconomical. Further,.these receivers provide' alerting through a signal . light and could be provided to residences where an occupant is hearing-impaired.
The tone-activated radio receivers in each state will receive broadcasts from the designated _ emergency broadcast station in that state. 1.2 Design Basis The design objective of the public alerting system for the Seabrook EPZ has been to provide coverage to essentially 100% s of the populated area of the EPZ. This has been achieved by following the guidance in Appendix 3., Section C. 3. e., of NUREG-0654; entitled "For Organizations Proposing Systems Witnout Field Surveys." An additional margin of about 5 decibels (dB) has been added within 10 miles of the site. In order to verify the design guidance that was used, selected measurements were made of ambient background noise, and outdoor sound propagation was computed for a variety of local weather conditions. These studies confirmed that the design guidance followed was appropriate and conservative. 1.3 Summary In Section 2 of this Design Report, the topography, climatology, demography and ambient noise-environment of the EPZ are summarized as they pertain to siren coverage. Section 3 contains a detailed technical description of the alerting system. An analysis of the anticipated performance of the system is given in Section 4 Appendices include measured background noise data, equipment procurement and installation specifications, and computation procedures. I
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- 2. DESCRIPTION OF THE SEABROOK STATION PLUME' EXPOSURE EPZ This description is limited to those features of the EPZ that affect the performance of puulic alerting systems using sirens.
2.1 Topography Sound propagation over the ground, such as from a siren to a listener, is affected by the terrain. Tne largest such effect is shielding by hills and the walls of valleys. However, extensive forests can attenuate the sound, and the sound-reflecting properties of the ground are important as well. Seabrook Station is on a coastal plain about 1 1/2 miles inland from the Atlantic Ocean (see Fig. 2.1). This plain, extending from the shore to about 4 miles inland, is essentially flat, with no hills or valleys to impede sound propagation. The coastline itself is rocky on the north, changing to sandy beaches on the south. Over most of the southern half of the EPZ, the beaches are actually barrier islands separated from the mainland by 1-2 miles of uninhabited tidal estuaries and salt marshes. Inland of the coastal plain the land gradually rises. To the north, there are scattered, symmetrical hills 200-300 feet ' in elevation - apparently drunlins or morainic remnants. These tend to be oriented along northwesterly to southeasterly lines. To the south, particularly along the Merrimack River in Amesoury and Merrimac, MA, the terrain is much rougner: a jumble of hills and valleys eroced by drainages into the river. These hills can De a significant impediment to sound propagation. On the other hand, when their tops are accessiole, hills offer ideal siren locations because line-of-sight sound coverage can be provided to surrounding valleys. s The Merrimack River flows from. west to ea'st through the southern half of the EPZ. In the coastal plain, its banks are 4 snallow, and it is over a mile wide with tidal flats just east of the City of Newburyport. Further upstream, it has formed an irregular valley 50-75 feet deep. Sirens placed outside this valley may not be neard within it and vice versa, so the siren system layout has special provisions for coverage within the valley. The Piscataqua River, which is also tiie Maine-New Hampsnire State line, forms a portion of the northern boundary of the EPZ. The Piscataqua drains Great Bay, also part of the northern limit of interest. For the most part, the EPZ is heavily forested with i deciduous trees: second-growth oak. The only exceptions are the Deaches, urban areas, tidal marshes, and occasional open fields. The trunks of the trees in such forests can scatter and tnus attenuate sound tc some extent. The effect is the same year-round, for the presence or absence of foliage is of minor importance for siren tones. 2.2 Climatology 1
- Coastal New Hanoshire nas a typical, 4-season, northern
- temporate climate, modified somewhat by the proximity of the ocean.
"There are three distinct types of air masses that affect the site area: ,
i ! a. Cold, dry air originating in subarctic North America,
- b. Warm, moist air from the Gulf of Mexico oc the suctropical Atlantic, and
- c. Coci, damp air t.oving in from the North A tl antic .
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i ! i l e
A's the prevailing flow" aloft over New Hampshire is i usually offshore, the first two types.of air masses influence the site area more than the third. The climate of the site is'thus continental in character, but with an important maritime influence."E13
< The most important meteorological parameter'affecting siren-sound coverage is wind direction because the vertical wind-speed gradient refracts sound waves. In general, sound carries downwind to a much greater distance than upwind.
Hence, a listener in the midst of a number of sirens is most , likely to hear those upwind of his location. Fall, winter and spring winds at the site prevail from the WNW and NW, with a typical speed of 9-11 mph at 30 feet. In the summer, winds are more likely from the WSW and SW, and. gentler: 4.5-7 mph. In the fall and spring, NE winds are not l uncommon, and in the summer, gentle (7-9 mph) seabreezes from the SE occur during the daytime.[2] The w'ater-vapor content of the atmosphere influences the extent to which sound is absorbed in air. Absorbtion is i greatest for cool, dry air and least .for hot, damp air. The mean monthly relative humidity at Pease AFB, near the site, ranges from 64.7% in February to 74.4% in September.E 3 Daily minimum temperatures range from about 12 0F in January to 570 F in July; the daily maxima from about 31 0 F to about I 800F.E43 The vertical temperature gradient influences sound propagation in much the same way as the wind gradient, but to a lesser extent. The vertical temperature gradient is related to atmospheric stability, as indicated in Table 2.1.
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i-(1) Seabrook Sta' t ion Final Safety Analysis Report, Vol. 2, PSNH, Manchester, NH, 1981: Section 2.3.1.1.
, (2) Seabrook Station Final Safety Analysis Report, Vol. 2, PSNH, Manchester, NH, 1981: Figs. 2.3-2 through 2.3-5. ! [3] Seabrook Station Final Safety Analysis Report, Vol. 2, PSNH, Manchester, NH, 1901: Table 2.3-14.
[4] Seabrook Station Final Safety Analysis Report, Vol. 2, PSNH, Manchester, NH, 19A1: Tables 2.3-9, 2.3-10.
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E ( TABLE 2.1 , PASQUILL STABILITY-CLASSES- [ 'AND TEMPERATURE GRADIENTS - 4 Temperature Gradient
- Standard i Stability Deviation of
. Class 0F/100 ft 0F/1000 ft CC/100 m Wind-Direction .; Fluctuations i ! -A a T < -1 a T < -10.4 a T < -1.9 250 i B -1 < a T < -0.9 -10.4 < a T < -9.3 -1.9 < a T < -1.7 200 s C -0.9 7 a T < -0.8 -9.3 7 a T < -8.2 -1.7 7 a-T < -1.5 150 i D ' 0.8 7 a T < -0.3 -8.2 7 a T < -2.7 -1.5 7 a T < -0.5
- 100 i E -0.3 7 a T < 0.8 -2.7 7 a T < 8.2 -0.5 7 a T < 1.5 50 i F 0.8 7 a T < 2.2 '8.2 < a T < 22 1.5 7 a T < 4 2.50 j G 2.2 7 a T 22 7 a T 47aT -
j b !
- Upper-level temperature minus lower-level temperature, divided ty the j difference in levels.
I } From NUREG-CR-2654 4 In coastal New England, C or D stability generally ! prevails. However, very unstable air (Class A) is not uncommon j
, on clustery winter days, and.very stable air (Class F) often !
occurs on clear, calm summer nights. l 2.3 Demography 3 i j Almost the entire Seabrook EPZ is populated: the.only l exception being the marsn and water areas along the coast and a : few hilly areas inaccessible by road in the west. Year-round 1 l residential concentrations exist in Hampton Center, about 3'1/2 miles north of the site; in Amesbury', 5 miles SW; in ! ) Newouryport, about 6-7 miles SSW; in Exeter, 8 miles NW; and in
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j Portsmouth, 12 miles and more to the NNW. during the summer, t the 12 miles of oeaches from Newbury (Plum Island) on the south through Hampton on the north are densely populated'by seasonal f residents and visitors. l i 1- ,
m - _ .- _. _ _ _ l - 3 Population distribution is'important-to the design of a-I~ public alerting system for the obvious reason'that alertin~g ,
. coverage should be concentrated where people are concentrated.
Furthermore,.the ambient background' noise,:which can interfere-i with people's ability to hear siren sounds, tends to increase j with population density.- This is because most of_the l background noise comes from motor vehicle traffic, and traffic j tends to be heaviest in densely populated areas. There have been a number of studies of. population distri-l j bution in the Seabrook EPZ. The most recent summary of these i is "A Comparison of-1980 Federal Census and FSAR Population Distribution Data for the Area Within Ten Miles of Seabrook
- Station," dated September 1983 and prepared for Yankee Atomic j Clectric Company by HMM Associates, Inc. The figures shown.in- -
Table 2.2 are the hiahest of any of the estimates in that sum- i l-mary document. They include both permanent.and seasonal residents. l Listed in Table 2.2 are the maximum resident populations j by ring and sector, and the population densities per square , j mile. The latter were obtained by dividing the populations by , j the ring / sector areas noted at the top of each column. I The guidance in Appendix 3 of NUREG-0654 indicates that, j for sirens, a minimum coverage of 60 dB should be provided in j areas having a population density of less than 2000 people per square mile. For densities greater than 2000 people per square 1 mile, the minimum coverage should be 70 da. As indicated on ! Table ~2.2, only two areas exceed 2000. people / square mile: 1 Seaurook Beach and downtown Hampton. In addition, Amesbury ' comes close to this threshold. j Because of the large area involved, the population data on l Table 2.2 for the ring between 5 and 10 miles are not adequate 4 l for computing population densities. Furthermore, the data.do l f not extend beyond 10 miles, and thus do not include downtown l Portsmouth. For these reasons, and in consideration of the nigh summer traffic volumes to the beaches, a mucn more conservative design approach has been used for the areas in wnich siren coverage should be 70 d8 or more. The areas desig-
- - nated for this higner' coverage are illustrated on Figure 2.2.
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-TABLE 2.2 i
HIGHEST ESTIMATES OF SEASONAL PLUS PERMANENT ~ RESIDENTS WITHIN 10' MILES OF SEABROOK STATION (1983) Distance from Station 0-1 mile 1-2 miles 2-3 miles 3-4 miles 4-5 miles 5-10 miles
# (A=0.2 mi.2) (A=0.59 mi.2) (A=0.96 mi. )'A=1.37 mi.2) 4,y,77 ,g,2) .(g,14,7 ,1,2)
Pop Dens Pop Dens Pop Dens Pop Dens Pop Dens Pop Dens N 20 100 85 144 542 553 811 592 424 268 5266 358 NNE - - - - 1%2 l2002l '2278 1663 431 244 8921 607 NE - - 131 222 981 1001 1786 1304 1186 '670 2332 159 ENE - - 974 1651 1481 1511 172 126 - - - - E - - 886 1502 - - - - - - - - ESE - - 1426 l24151 - - - - - - - - SE _ _ 79 134 885 903 - - - - - - SSE 10 50 103 175 432 441 821 599 1120 633 4980 339 S 161 805 275 466 631 644 694 507 1227 693 8045 547 SSW 282 1410 314 532 493 503 608 444 480 271 10,370 705
.SW 80 400 764 1295 520 531 270 197 3386 1913 11,974 815 tSW - - 765 1297 736 751 314 229 3435 1941 11,904 810 W 154 770 761 1290 293 299 364 266 751 424 2739 186 MW 180 900 81 137 275 281 137 100 751 424 3036 207 N3 30 150 247 419 170 173 128 93 127 72 10,975 747 NNW 30 150 293 497 168 171 207 151 335 189 4126 281 Source: "A Conparison of 1980 Federal Census and FSAR Population Distribution Data for the Area Within Ten Miles of Seabrook Station" (September 1983).
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2.4 Ambient Noise 2.4.1 Background The audibility of a siren sound depends upon the magnitude of other extraneous sounds at the listener's location while the siren is operating. These other sounds, called the ambient background noise, come mostly from motor-vehicle traffic; but numerous other sources are familiar (aircraft, barking dogs, children at play, construction, etc.). As these sources come and go, the ambient background noise fluctuates with time in a way that is unpredictable, except in a statistical sense. Siren audibility is based upon the minimum background noise that occurs during the time the siren is operating. Louder noises are unimportant, provided their duration is less than the duration of siren operation, Decause people tend to hear during the quiet periods between interfering noises. 2.4.2 Design Basis A meaningful characterization of the minimum ambient background noise over several hundred square miles, for all weather conditions, seasons of the year and times of the day, would be very difficult and costly to obtain. Realizing this, FEMA /NRC have provided a siren system design option which avoids background noise measurements.[5] This option says, in effect, that the minimum ambient background noise in urban areas (defined as areas with a population density of 2000 people per square mile or more) will generally be less than 60 d8 at some time during siren operation. In other areas, FEMA /NRC indicates that it will generally be less than 50 dB. [5] NUREG-0654/ FEMA REP-1, " Criteria for the Preparation and Evaluation of Radiological Emergency Response Plans and Preparedness in Support of Nuclear Power Plants " Rev. 1 dated Novemoer 1980, Appendix 3. SeealsoSect1on3.1of this report.
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. . l The' alerting system for-the Seabrook Station has-been designed-
.u' sing this option. 'Hdwever,we.tooktheopportunitytomake seventeen noise measurements in' order to verify the design guidance provided.by. FEMA /NRC. .The results of these
' measurements, and the procedure by'which they were made, are described below. .
.2.4.3 Measurement' Locations '
)
On the basis of previous ambient noise studies,in the t
' EPZ 03,' seventeen of the noisiest locations were selected for measurement.* These measurement locations are listed on Table.
2.1 and illustrated on Figure 2.3. 4 2.4.4 Measurement Equipment l 1 l Measurement equipment consisted of a GenRad Type 1933 { Sound Level Meter / Octave Band Analyzer, feeding a GenRad 1945 9 f Community h dse Analyzer. These were operated continuously for .
} 1/2 nour at each site to observe the cumulative statistical j distribution of the sound levels at that. site.
i- {- 2.4.5 Measurement Bandwidth i I. The process by which background noise interferes with the j audibility of a sound is called " masking." Researchers have
- studied masking for many years. They have found that a sound j is masked predominantly by background noise in the immediate [
frequency range of the sound. High-pitched sounds are not , ) masked oy low-frequency noise, nor vice vers'a. l
; [6] Costello,'Lomasney and de Napoli, Inc.,." Preliminary Report on the Public Alerting Systems for the Seabrook Station
- Emergency Planning Zone" (undated).
- The measurements reported here were made in the Fall, when 4 the public beaches.were not in use. Hence the beaches and beach access roads were somewhat quieter than in the i summer. However, we believe that the noise levels in most other areas of the CPZ were representative.
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The background noise that contributes to the masking of a siren sound is contained in a relatively narrow frequency band centered on the frequency of the predominant siren tone This band, sometimes called the " critical band," is very narrow: typically 1/6 to 1/10 of an octave wide. Filters for measuring the background noise in such a narrow band are not.readily available. The sirens to be installed around Seabrook Station will produce tones at 700 Hz. Hence, the measurements reported here were made with an octave-band filter centered at 500 Hz (i.e. , 'a filter spanning the range f rom 353 Hz to 707 Hz) . Because the octave band contains much more noise energy than the critical band 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 bands for ambient noise measurements.E 3 Of course, the critical band is even narrower than 1/3 octave, so the data reported herein are somewhat higher than the actual background noise of interest, and hence more conservative. 2.4.6 Results The data sheets from each of the seventeen measurement locations are given in Appendix A. The data are in tne form of "L-levels." The L 10 is the level that was exceeded 10% of the time during the 1/2-hour sampling period; the L50 was exceeded 50% of the time; the L 90, 90% of the time; etc. The maximum and minimum momentary levels that were observed are also reported, along with the equivalent level: L eq. The L eq is the level of a hypothetical steady sound that would have had the same energy over the half-hour period as the actual, fluctuating noise. Because sound is measured on a logarithmic scale, the L eq tends to be influenced by brief, intense noises. [7] FEMA-43, " Standard Guide for the Evaluation of Alert and Notification Systems for Nuclear Power Plants," September 1983. Section E.6.2.1, pp. E-6.
4 The data in Appendix A include the -5 dB correction to 1/3-octave-band levels. The levels observed at each site typically span a range of 30 dB or more. This raises the question as to which level in that range should be used as the masking level. An estimate that is often used is the L 90 level. This is called the
" residual" level, and it generally characterizes the background in the absence of brief transient noise sources like passing vehicles.[8]
For the purposes of this study a more conservative value, the L 50, is used. The L50's are tabulated on Table 2.3. The L50, or median level, could be considered represe'ntative of the'" average daytime level" used by FEMA in FEMA-REP-1 and FEMA-43. For sirens operating 15 minutes or longer, the L 50 would establish the highest possible masking level. For sirens
- operating less than 15 minutes, there would be some chance of-masking at higher levels. This chance.would increase as the siren duration decreased. Examination of the L 50 levels on Table 2.3 indicates that only one exceeds the 50 dB " rural" design level provided by FEMA /NRC. This is 53 dB at site #10 in downtown Portsmouth. The site is clearly in an urban area where FEMA /NRC's 60 dB design background level applies.
Three other sites are worth mentioning. At site 3 in Salisbury, 50 dB was observed and at Site 8 in Seabrook 48 dB was observed. Both sites are close to Interstate 95 and receive relatively steady traffic noise from that source. The siren system for these locations is designed for 60 dB (i.e., urban) background noise. Finally, at site 16 in downtown Exeter, 48 dB was observed. Siren coverage la that area is also designed for a 60 dB background. At all other sites, the-L 50 was 45 dB or less. In conclusion, the background noise measurements confirm that the FEMA /NRC design levels are suitable, and quite conservative. [8] US EPA NTID 300.3, " Community Noise," December 1971.
TAHLE 2.3 SDe#RY OF ADEIENT BACKMOLM) NOISE EASlKENTS IN TE SEAER0tX EPZ6 (CONTDARD) 1/3 Octave Nmicipality Location Band Site Date Time Somd Sources Observed L No. L Exeter Center St., 80 yds. S. of 11/7/83 12:30 PM Light traffic on Center St., but 48 16 Water St., in @wntown area intermittent noise from cars leaving parking spaces and drive-in windows at bank. Moderate traf fic on Water St., antaulance stren heard for several minutes. North Ocean Blvd. at Willow Ave. 11-1-83 2:15 PM Very little traffic in area, no 40 12 Hampton unusual noise sources. Portsmouth Cass St., between Islington 11-1-83 11:15 AM Light traffic on Cass St., noise 45 9 and State from a street sweeper for several minute s. Portsmouth danfield Rd.,1/4 mile S. 11-1-83 12:00 Noon Intermittent traffic on Banfield St., 53 10 ; of Peverly Hill Rd. heavy equipment operating continu-ously at neatt>y sand and gravel mine.
-1 qye Washington Rd., between 11-1-83 1:15 PM Very light traffic on Washington Rd., 42 11 D Route 1 and Dow Lane with several large trucks. Tm loud Jets flew overhead for several [
rq , I minutes. H h3
' [ Seabrook Lakesnore Rd., 200 yds. 10-25-83 ' 9:45 AM Steady traffic on Route 1, occasional 44 1 y
W. of RaJte 1 cars passing on Lakeshore Rd. No unusual noise sources. Seabrook thnamed street on N. side 11-1-83 9:45 AM Moderate traffic on Route 107, with 48 8 . of Route 107, near New occasional noisy fuel trteks. Back-Zealand Rd., halfway between gromd noise from I-95 and Route 1. I-95 and Seabrook Station gate Stratham Stratham Heights Rd., 200 11-1-83 3:15 PM Steady traffic on Route 108, inter- 43 15 yds. 2. of doute 108 mittent on Stratham Heights Rd. No unusual noise sources.
- See Appendix A for detailed data.
2178C/ . 12/21/83
TAG.I 2.3 SteeARY OF AMIENT BACK(RutN) NOISE WAStKKNTS IN TE TA8ROIK EPZ'
. 1/3 Octaws Band site Date Municipality Location
- Time Sound Sources Observed C No.
Amesbury High St., 75 yds. from 11-7-83 11:00 AM Light traffic on surtounding streets, 43 15 Market St. in downtown area , cars accelerating m incline on . High St. Merrimac dear Hill Rd., 50 yds. N. 10-25-83 1:00 PM Occasional traffic on Bear Hill Rd., 36 4 of Route 110 including several tractors. Back-gromd noise f rom Route 110, incitsiing duip trucks. Newbury Elm St., on campus of Gov. 10-25-83 4:00 PM Light traffic on Route 1, occasional 39 7 Ouener Academy, 200 yds, passing cars on Elm St. No unusual W. of Route 1 noise sources. Newbury Newbury Neck Rd.,100 yds. 11-7-33 1:45 PM Very light traffic on both Route 1A 40 17 g E of Route 1A, just S of and Newbury Neck Rd., chain saw y
' Parker River motors in baclegrmJnd. G3 r-West Gypsy Lane, 75 yds. N. of 10-25-83 2:00 PM Very light traffic on Gypsy Lane, 39 5 N P
Newburyport Rajte 113 with exception of one bus. g.
# Moderate, intetinittent traffic .
8 on Route 113, with occasional buses. W Newburyport Cottage Court, S. of 10-25-83 3:00 PM Steady traffic on Route 1, cars . 45 6 Route 113, just off Route 1 accelerating on upgrade 30 yds. away, students walking home. Salisbury Glenwood Ave., 75 yds. N. 10-25-83 10:45 M Moderate traffic on Route 1A, none 39 2 of Route 1A on Glenwood. Dog barked for approximately 5 min. Salisbury Intersection of Rabbit Rd. 10125-83 11:15 AM Cars on Rabbit Rd., with many 50 3 and Old Elm St., 1/4 mile accelerating. Background traffic
#E of I-95 and Route 110 noise f rom I-95 intersection ,
Salisbury Old County Rd., 50 yds. 11/7/83 9:45 AM Ligtt, intermittent traffic on both .45 14
' f rom Route 1A .Old County Rd. and Route 14. No unusual noise soutres.
- See Appendix A for detailed data.
2178C/ 12/21/83
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- 3. DESCRIPTION OF THE ALERTING SYSTEM' 3.1 Design Criteria As indicated above, the Seabrook siren system has-been designed in accordance -with Section C, 3, e of Appendix 3 of NUREG-0654 This section indicates that for areas with-population densities less than 2000 persons / square mile, 60 dB(C) minimum siren coverage shall be provided. It further indicates that siren coverage range can be based upon the assumption'of a 10 dB attenuation rate per doubling of distance
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as tne sound level radiates from the siren. This is equivalent to: , 60 Range to 60 dB(C) in ft. = 100 X 10 exp SirenOjjp where "Sirer. Output" is the rated siren sound level at 100 feet, in dB(C). The design guidance of Appendix 3 goes on to indicate that coverage for areas with population densities exceeding 2000 people / square mile should be based upon Figure 1 of FEMA CPG l-17, " Outdoor Warning Systems Guide," March,1980.- This is equivalent to requiring a minimum 70 dB(C) sound-level in such areas, with an attenuation rate of 8 dB'per doubling of distance for sirens rated 110 dB(C) or~more.* -Siren. range for such areas can be computed from: Range to 70 dB(C) in ft. = 1550 X 10 exp Siren Output - 110 1 Where'" Siren Output" is again the rated siren sound level at 4 100. feet, provided it exceeds 110 dB(C).
- Figure'l-of CPG 1-17~ suggests a different relationship,for- )
urban high-rise areas where'the_ sirens are mounted below the ) rooftops. -No-such areas exist within the Seabrook EPZ. j l j
. i 4 -l
The coverage range of the public-address capability of the electronic sirens will depend upon the voice message content, and in general will be considerably lass than the 60 dB(C) l range for tones. This is in part because the attenuation of high-frequency speech sounds in the atmosphere is greater than it is for siren tones. In addition the average sound output of i I the sirens in their voice mode must be about 7 dB less than it is for tones in order to avoid clipping of the speech peaks. Henca this design is based on the assumption that the voice coverage range will be the same as the 70 dB(C) range for tones. To allow for the possibility that siren output may be less tnan specified, all ranges were computed for a siren output 1 dB less tnan rated. In addition, because 125 dB(C) electronic sirens are actually advertised as having a 124 dB(C) rating, an additional 1 dB(C) was subtracted for this size siren. The resulting design ranges are listed in Table 3.1. TABLE 3.1 SIREN RANGES UTILIZED FOR DESIGN, BASED UPON SECTION C, 3, e OF APPENDIX 3 0F NUREG-0654 Range Nominal Rating Siren used for 2000 p/mi 2 2000 p/mi 2
~
Rating Design 60 dB(C) 70 dB(C) ., 125 dB(C) 123 dB(C) 7900 feet 4800 feet 115 dB(C) 114 dB(C) 4200 feet 2200-feet 113 d6(C) 112 dB(C) 3600 feet 1800 feet l i j l
< ~ --
s 3.2 Siren Locations 4 Based upon the siren ranges listed in Table 3.1 an'd field investigations, sites were selected for 140 sirens in the Seabrook EPZ. These sites are shown on Figure 3.1 and listed in Appendix 8. Table 3.2 contains a summary by siren type, community and state. Criteria for the selection of siren sites were as follows: o Achievement of adequate sound-level coverage throughout the EPZ. o Clear line-of-sight throughout coverage area of each siren. (i.e. , hilltop sites pref erred) . 4
, o Concentration of coverage in densely-populated areas.
4 o Utilization of sites where community has already installed audible warning devices. a- Availability of distribution power: ideally 120/240 V, single-phase secondary power. o Location accessible by maintenance vehicles in all weather. t o If roadside, the location is across the street from dis [.ributionprimariesandsafefortheinstallation of a pole and parking of maintenance vehicles, o Tree clearance. o On an extended-property line.
TABLE 3.2.
SUMMARY
OF' SIREN REQUIREMENTS BY SIREN TYPE, COMMUNITY AND STATE Numbers of Sirens Existing Community ll5dB 125dB (113 dB) Total i New Hampshire Brentwood 5 5 East r(ingston 1 3 4 Exeter 2 8 10 Greenland 1 3 4 Hampton 1 9 10 Hampton Falls 2 3 5 Kensington 2 3 5 Kingston 4 4 New Castle 1 1 Newfields 2 2 4 Newton 5 5 North Hampton 1 5 6 Portsmouth 8 8 Rye 7 7 Seabrook 1 7 8 South Hampton 1 3 4 4 Stratham 2 4 6 Totals 14 80 - 94 Massachusetts Amesbury 3 7 10 Merrimac 4 2 6 Newbury . 1 6 7 Newburyport_ 1 7 8 4 Salisbury 9 9 West Newbury 2 4 - 6 Totals 3 2 ] y GRAND TOTALS 24 109 7 140 e
l
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o ~0ut of view of and reasonably removed-from residences, if possible. o Avoidance of noise-sensitive areas where possible.. Each site was visited, often in the company of local and
~
State Civil Defense Officials, and marked and documented.- In almost every case, the sirens are to be mounted at least 50 feet in the air on wooden utility poles. They are to-be placed along public roads, or on town or municipal property. No sirens are to De placed on private property,-and no land-takings will be necessary. Detailed specifications for the installation of the sirens are given in the siren installation specifications. 3.3 Description of Sirens Of the 140 sirens in the system, 133 will be new , electronic sirens; 109 rated 125 dB(C) nominal, and 24 rated 115 dB(C) nominal. The remaining seven are existing Federal Signal Type 3T22 mechanical sirens recently installed by the City of Newburyport. To accommodate the needs of the overall system, the City has agreed to the relocation of three of these existing mechanical sirens. The new electronic sirens are directional sirens of the rotating type capaole of four different tonal sounds plus-a voice message. One of these sounds will oe reserved for use in tne event of a Civil _ Defense Emergency, including a-sufficiently serious accident at the Seabrook Station.- The remaining three tonal sounds-will be available for other' local purposes as selected by the community. All of the new electronic sirens will De capable of broadcasting, acoustically, a voice message received over-the radio-frequency (RF) siren-control channel. Present plans call for the use cf this capability along the public beaches to both. alert and notify beach users of a radiological emergency. The
sirens that will be employed for this purpose are RY-1, RY-3,
-RY-4, NH-1, HA-1,.HA-2, HA-3, HA-4, SB-1, SB-5, SA-1, SA-2, SA-3, NP-1 and NB-1.
When producing' tonal sounds, the new sirens will rotate or I oscillate at a rate of 2-4 rpm. When broadcasting voice messages, they will be fixed in desired directions and the message sent. They will then be pointed in another direction .; and the message repeated, etc., to obtain complete coverage. l The seven existing sirens in the City of Newburyport are omni-directional mechanical sirens, and are not capable of sending a voice message. However, a new electronic siren to be installed on Plum Island in Newburyport (NP-1) will have voice capability, and people in downtown Newburyport will hear voice , messages-from electronic sirens in adjacent towns when the siren system is tested. All of the new electronic sirens are battery operated, with a trickle charger permanently connected to the AC power 4 distribution system. In the event of complete loss of distrioution power, these sirens could operate in standby mode for several weeks, or with full sound output for 1/2 hour.
, The warning system relies predominently upon sirens with a nominal rating of 125 dB(C) as observed 100 feet from the siren rens commercially avai able. Smaller 115 dB C sirens wi 1 be used at about 20% of the locations where terrain or other constraints make the use of the larger, more costly, sirens unnecessary. The existing mechanical sirens in Newburyport have an advertised. output of 113 dB(C').
Detailed specifications for the sirens are given in the siren purchase specifications.
- The actual advertised output is 124 dB(C) maximum. See Table 3.1.
E-
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l l 3.4 Siren-Coverade- i
-l
- 3.4.1. Alert ~ Tone
[ i , The area in which siren coverage is estimated to be 60 dB(C) or more is shown on FigureL3.2. The. area. covered by 70 dB(C). or more is shown. on Figure -3.3 Both estimates are based. upon circles having radii equal lto the ranges in Table 3.1. However, the circles are. truncated at hills that form the horizon as viewed from-the siren. The entire area within 10 miles of the plant is estimated to be covered by 60 dB(C) or more (Figure 3.2) except.for a three lightly-populated regions in western Newburyport, southern West Newbury and southern Merrimac.. If tests of the system' indicate that coverage of residences in those areas needs to be supplemented, then either additional sirens or emergency-alerting radio receivers will.be provided. See Sections 3.6 and 3.10. As shown~on Figure 3.3, the design allows for. coverage of 70 dB(C) or more on the beaches'and in essentially all populated areas within 5 miles of the plant.- All of the areas-in Table 2.2 in which population exceeds 2,000 p/sq. mi. are covered by 70 dB(C) or more. 3.4.2 Voice it is assumed in this design'that voice coverage.is equal to the 70 dB(C) tonal coverage illustrated on Figure 3;3 , The adequacy of voice coverage will be determined by the intelligibility of voice messages, as heard by observers some distance from the sirens. This intelligibility will-depend upon the message content, the-speaker's voice and his method of delivery. . Intelligibility can be maximized by following these-guidelines: P o Use a trained, male speaker with a " neutral" accent (such as a skilled radio' announcer). - l o Prepare pre-recorded tape messages for various anticipated emergency action responses, o Tne speaker should speak very slowly, with pauses oetween words. o Keep the messages as brief'and simple as possible, and repeat them. o Employ. simple words from common usage. Use words that do not depend strongly on fricative or stop-consonent sounds to convey their meaning. o Test the messages for intelligibility and refine them under simulated field conditions. (This can be done in a suitably equipped audio laboratory.) 3.5 Siren Control All sirens will be controlled by radio signal. In New Hampshire, the primary state control point for a radiological emergency at Seabrook Station will be at the Rockingham police dispatch center in Brentwood. In Massachusetts it will be at the State Police Troop A Headquarters in Framingham. In addition, each of the 23 cities and' towns will have tneir own, totally independent control transmitters for all sirens within their borders. See Tables 3.3 and 3.4. These town controls will serve as back-up for the State controls, and may also be used by tne towns to activate the sirens for local purposes such as fire call-outs. Each state will license one new RF frequency for siren control, so the operation of the sirens will not add to the traffic on existing communication channels. RF modulation for siren control will be either dual-tone multi-f requency (DTMF) tone sequences (like a touch-tone phone), or 32 bit frequency-shaft-keyed (FSK) sequences. Each State will have a map display / status Daard showing the control codes sent to sirens within that state.
Secure Manned ros-mity Contrf1 Loc
- tion Power? 24 h/d? Comument Brentwood Fire station,' Old Rt. 125 N N i East Kingston Town Hall / Fire Station' Y N The two buildings are side-by-side.
Exeter Fire / Police Station,' Bow St. Y Y Greenland Town Fire Station,' Tide Mill Rd. Y N Also requested control by Exeter Dispatch. Hampton Fire Station on Wimacunnet Road
- Y Y
- m Hampton Falls To be determined Q c Kensington Fire Station,' Rt. 150 N N Off-hours dispatch by Exeter m j M :D Kingston Central Fire Station,* Main St. Y N Nighttime Fire Callout by Exeter <
West and Rock Rimon Rd. M 1 O a y New Castle Rockingham Comty Dispatch Y Y Newfields Fire Station,' Piscassett Rd. N N O n
- D -4 Newton Central Fire House, S. Main St. (Rt.108) Y N May change to Town Hall.' Police r >
. dispatch is by Rockingham County; fire I g f dispatch by Atkinson. D y
u North Hampton Central Fire Station,' Atlantic Ave. Y Y ( m s M Z m W 3 (Rt. 1010) .
. I w
- o Portsmouth Central Fire Station,* 170 Court Y Y g g ,
Rye To be determined o z O o Seabrook Central Fire Station,* Collins and k F South Main Y Y c y Z o South Hampton Town Hall,' H111 dale St. N N Amesbury (MR) handles fire dispatch H and Rockingham Comty does police [ H Z' g dispatch R g in Stratham Fire Station,' Wimicut Rd. at Routes Y N Newserket dispatch provides 24 hour 101/108 , callout
- RERP EOC.
2261C/Oll:C 01/23/84
. . _ . . _ . , _ . . _ _ _ . . _ _ ..m_ . . . _ __ . . - . . .
Secure 64anned Canumity Control Location Power? 24 h/d? Comument Amesoury Police Sta. Friend and School Sts. Y Y Xmit. to repeater on Pow Wow Hill Nerrimac Fire / Police Station
- Rt.110 0 Broad St. N Y Xmitter at station in valley in Newbury Police Dispatch, High Rd and Norgan Ave. Y Y l
Newburyport Fire Station, Gmenleaf St. off State Y Y EOC is at High School' I, I) Salisbury Police Station' Railroad Ave. Y Y *<- West Newbury Town Clerk's Off., Town Hall, Rt.113 N N Xmitter is at Central Fire Sta two kg blocks away. Nightime fire callout is ty Haverhill. EOC is at CD office
- I several mi. to the east. I O I
= m O H I %
5 m m Z - ,
- E F ECE l -I n U)
-1 r j g Z
m
& o O
g w e I I a # g F c u I O M H H m ~ (n U
- D V8 L
C Ps (A H PE O G3
s The siren control system is described in greater: detail-in l Section 4.0 of the purchase specifications for-sirens and 1 controls. 3.6 Emergency Alerting Radio Receivers Emergency alerting radio receivers will be provided to-institutions within the EPZ that sould have to internally coordinate their response to a radiological emergency at Seabrook. One hundred and fifty such institutions have been identified from local Emergency Plans and industry directories in New Hampshire and are listed on Table 3.5. Similarly, eighty-four have been identified in Massachusetts, and are listed in Table 3.6. Additional receivers will be purchased for possible distribution to: o Institutions similar to those listed in Tables 3.5 and 3.6, but not ye". identified. o Homes with an occupant who is hearing impaired. o Isolated residences where tests indicate that siren coverage must be supplemented, and where the provision of additional siren coverage would be uneconomical. All emergency-alerting radio receivers will be activated by an EBS tone on a commercial broadcast station. In New , Hampshire, this will be WOKQ in Dover, New Hampshire, which is a 24-hour 50,000 watt FM station with coverage throughout the EPZ. In Massachusetts the activation station will be WCGY, a 50,000 watt FM station in Lawrence, MA. Upon activation, the-audio capability of the receiver will turn on, and emergency
~
messages from the activating station will be audible. 1 Activation will also light a aignal light on the receiver to notify those unable to hear audible information. 1 TABLE 3.5 LIST OF' ORGANIZATIONS TO RECEIVE EMERGENCY-ALERTING RADIO RECEIVERS IN THE SEABROOK EPZ NEW HAMPSHIRE Location Quantity City / Town EOC's 17-State Civil Defense 2 Rockingham County Dispatch 1 Schools (see Table 3.5.1)* 69 Businesses'with 50 or more employees (see Table 3.5.2)* 42 Medical Care Facilities (see Table 3.5.3)* 12. Otner Pease AFB 1 Portsmouth Naval Shipyard 1 U.S. Coast Guard, Portsmouth 1 Rye Harbor State Park 'l Hampton Beach State Park l' Tricklin Falls YMCA Camp (E. Kingston) 1 Seabrook Dog Track _1 Total 150
- Tables are in Appendix C.
TABLE 3.6 LIST OF ORGANIZATIONS TO RECEIVE EMERGENCY-ALERTING RADIO RECEIVERS IN THE SEABROOK EPZ , MASSACHUSETTS Location Quantity City / Town 60C's- 6 State ~ Civil Defense 2 Schools (see Table 3.6.1)* 26 Businesses with 50 or more employees (see Table 3.6.2)* 29 Medical Care Facilities (see-Taole 3.6.3)* 17 Other Parker Wildlife Refuge .1 Salisoury Beach State Reservation 1 U.S. Coast Guard, Plum Island 1 Boy Scout Camp, Amesbury _l-
. Total 84 i
- Tables are in Appendix C.
The receivers operate from AC; power, but have Dack-up battery power in the event of a power failure. They are described in detail in the purchase specifications for the receivers. 3.7 Public Notification and Instructions via Emergency Broadcast The two state Civil Defense Organizations will assure that the EBS and other emergency broadcast stations are broadcasting emergency messages and information to the public at the time that sirens are activated. These emergency broadcast stations are WOKQ in Dover, New Hampshire, and WCGY in Lawrence, Massachusetts; the stations that will trigger the emergency alerting receivers in the EPZ. The EBS will be used in accordance with the respective state Emergency Broadcast System Manuals. For the Seabrook Station EPZ, the Common Program Control Station in New Hampshire (CPCS 1), WTSN 1270 AM, will be activated. This CPCS 1 station will in turn activate al'1 primary stations in the area. The broadca't s stations involved are: I WTSN Dover, NH 1270 AM -(CPCS 1) 2 WOKQ Dover, NH 97.5 FM (First Primary) 1 WWNH Rochester, NH 930 AM (Primary) 2 WHEB Portsmouth, NH 750 AM; 100.3 FM (Primary) WBBX Portsmouth, NH 1380 AM (Primary) , WKXR Exeter, NH 1540 AM; 107.1 FM- (Primary) l WVNH Salem, NH 1110 AM (Primary) WONH Durham, NH 91.3 FM (P rima ry) WPEA Exeter, NH 90.5 FM (Primary) l WENH Durham, NH Channel 11 TV (Primary) 1 Emergency Power 2 24-Hour Capability
l l l Virtually all New Hampshire stations within and aDutting the EPZ area have been selected for inclusion in the emergency l information network. In this area.each of the stations provide ; coverage of the entire New Hampshire portion of the EPZ. l Most of these stations are not operational on a 24-hour basis. For such stations, advanced notice is needed before l broadcast can begin. For this reason, tne New Hampshire EBS f stations will be contacted by NHCDA at the ALERT level if ! current reactor status indicates that a SITE AREA EMERGENCY. might be declared. This would allow for the broadcast of messages at any time that the public alert system is to De activated. In Massachusetts, the activating emergency station, WCGY in Lawrence, is a 50,000 watt FM station on 93.7 MHz. It will be activated by Massachusetts Civil Defense prior to siren activation, as described in the Massachusetts State Radiological Emergency Plan. 3.8 Siren Activation Sequence In the event of a Site Area Emergency at the Seabrook Station, the respective State Civil Defense organization will notify their State control points to activate all sirens in each state. The recommended activation sequence is as follows: Winter: 3 minutes of'the designated emergency tone, immediately followed by a second 3 minutes of tone. This process should be repeated after 10-15 minutes, if necessary. Summer: 3 minutes of the emergency tone, immediately followed by a second 3 minutes of the tone for sirens off the beaches. O e ~
3 Tne fifteen sirens to be used tosalert'and notify beach users should broadcast voice messages during the second 3 minutes of activation. These messages should be broadcast in each of the following directions: N, NE, SE, S,.SW, W, and NW. Brief messages, repeated at.least once, should be used. Foreign-ladguage messages may be broadcast'in every i direction immediately after the English language message. j l This process should be_ repeated after 10 to 15 minutes. j 3.9 Siren System Tests In accordance with the guidance in Appendix 3 of NudEG-0654/ FEMA REP-1, the radio communication links for siren control will be tested at least once every two weeks. The sirens will not be sounded during these tests. In~ addition, every siren will be sounded briefly at least once every three months in order to verify that it is fully operational. Finally, the entire siren system will be exercised fully at least once a year. For these annual exercises, the following sequence of operation is recommended. l a. A voice broadcast of the message "This is a Test, This is a Test" in each of eight directions from all sirens.
- b. Three minutes of the Alert Tone on all sirens.
- c. Repeat of the voice message, a., on all sirens.
- d. Repeat of D.
I l
- e. Repeat of a.
3.10 Provisions for-Alerting System Improvements, if Required The design objective of the public alerting system for the Seabrook EPZ has been to provide coverage to essentially 100% of the populated area of the EPZ,.in accordance with Appendix 3 of NUREG-0654/ FEMA-REP-1. The NRC recognizes that "this design objective does not, however, constitute a guarantee that early notification can-be provided for everyone with 100% assurance or that the system when tested under actual field conditions will meet the design objective in all cases." For this reason, system tests may indicate the need for corrective measures. Emergency-alerting radio receivers will be available for isolated residences in the event that siren coverage must be supplemented at their locations (see Section 3.6). In the unlikely event that testing reveals heavily-populated. areas where. siren coverage needs to be supplemented, additional sirent will be installed. The control system has the capability to operate additional sirens. l l
- l i
l l
4 ANALYSES OF SYSTEM PERFORMANCE 4.1 Activation Time The time to activate the sirens from a State control point, using an all-cali code, is about 0.4 seconds, j 4.2 Siren Coverage I Of course, siren coverage varies with we.1ther conditions. It is useful, therefore, to examine the coverage of tne EPZ under a variety of weather conditions. This has been done-using HMM Associate's SIREP . computer program. The computational algorithms for SIREP, and their origins in the
- technical literature, are described in Appendix G.
4 Four sets of meteorological ~ conditions, listed in i Table 4.1, have been analyzed. The first of these is representative of average summer daytime conditions, with a SE-wind, C stability, and 80 F temperature. Tne second . condition mooeled is that typical of summer. nighttime. Becauce of the light wind and strong temperature inversion,-the coverage for this condition is greater than that for any of the other conditions. The third condition is typical of a stormy spring or fall 1 day : a " northeaster". The fourth condition modeled is that of a clear, windy (" blustery") winter day. 5
F-TABLE 4.1 I ( REPRESENTATIVE WEATHER CONDITIONS MODELED FOR SIREN COVERAGE ESTIMATES Condition Weatner Parameter 1 2 3 4 Summer Summer Spring / Fall Winter f Average -Clear Stormy " Blustery"- ! General Day Night " Northeaster" Day i i Wind Speed, mp h 10- 5 20 15 . l Wind Direction, T 135 225 45 315. Stability C F D A
; Temperature, F 80 70 50 40 ,
j Relative Humidity, % 70 90 99 20 j Barometric 29.92 29.92 29.92 29.92 , j Pressure, in.Hg l I See Figure 4.1 4.2 4.3 4.4 i
! The 60~dB(C) and 70 dB(C) coverage estimates computed for each of these four conditions are shown on Figures 4.1 through 4.4.
! i i I i e i i i _______________--_________---_--______________j
1 - . 1 2 1 1
- APPENDIX A i
i_ i AMBIENT BACKGROUND NOISE LEVELS
- MEASURED IN THE SEABROOK EPZ l
1 4 Note: The individual measurement sites
. are shown on Figure 2.3. The ;[
levels were measured in the 500 t Hz octave band and converted ~to i equivalent 1/3 octave band levels ' by subtracting-5 d8. , 4 i j- l 1 4 I l 1 A-1 l l I i i
-Site 1, Seab' rook.
~
% Time dB Level l ' Measured dB Level-1 0.1 l' ,
60 I i l~ l 55. l l 2 l '53 1 5 l' 50 l 10 l 48 l 20 l 46 1 50 1 44 I . . 90 1 42 I . 99 l 41 1 Maximum l 68 i Minimum I 39 , I LEQ l '46 I Notes: 10-25, 9:45 A.M. start. 200 yards off. Route-1 on Lakeshore Road. Calm, cloudy,.450F. Steady traffic on Route 1, occasional cars passing on Lakeshore. A-2
.c = -
O y , Site 2, Salisbury I
%-Time- dB Level <
l Measured-dB Level I
*. 0.1 1 78 I
e 1 l 68 l 2 1 57 I 5 1 47 4 I . 10 1 45 1 20 1 42 1 50 l 39 I 90 1 37 l 99 l 36 I
- Maximum l 80
, I Minimum l 35 3 I . LEQ l 55 1
Notes: 10-25,.10:45 A.M. start. 75. yards north of Route 1A in Salisbury, on Glenwood Avenue. Cloudy ,15 mph wind, cold. Barking dog beginning at 15 minutes of run. Moderate traffic on 1A, none on Glenwood. Dog barked for approximately.5 minutes. A-3
d
. Site 3', Salisbury
% Time dB Level 1 -Measured dB Level 1
0.1 l 67 l 1 1 62 1 , 2 l 60 1 5 l 58 1 ' 10 l 56 I 20 l 54 . I
- 50 1 50 i
I j 90 l 46 l . 99 l 43 l
- Maximum I 69 l
Minimum I 41 l LEQ 53 3 4 Notes: 10-25, 11:15 A.M. Start. Intersection of Rabbit Road
& Old Elm, about 1/4 mile .NE of. I-95 and 110 intersection. Mixed residentialiand commercial uses.
Moderate traffic, background noise from I-95. Cold, cloudy, light wind. Traf fic on Rabbit Road about 40
~ . mpn, many car's in acceleration.
1 a
^
a A-4
, . ., , , . . ~ ,. . . .. . - - . . . , - . - - - ,- .
f f G
+
I
'S'te i 4~,.Merrimac.
I X Time -dB Level l Measured dB Level ! l- .. L 0.1 1 73 l 1 l 64- :' 1 l: 60 2 1 ! I ~ 5 l 55 1 10 l 48 i I j 20 1 43'
.I 50 l 36 i
- I
! 90 l 33 . j l 99 1 32 1 , Maximum l '83
- I
- Minimum l 31
} l- ] LEQ l 53 i I . 1 I ., l 1 Notes: . -
; 10-25, 1:00 P.M. start. 75 yards N of Route 110, on j Bear Hill Road. Residential street with semi-rural ) .- character. Occasional cars on Bear Hill Road.
- Background noise from Route 110. A couple of tractors i (noisy)-passed by. Weather _ conditions same as sites 4
1,.2 and 3. Cars coming up a sli ht incline on 110 accelerating. TrafficonRoute10includessevera1 heavy dump trucks.
- i i
A-5.
'l
s Site 5, Newburyport
% Time' dB Level l Measured dB Level' l
0.1- l ? 69 l 1 1 56 'l 1 J 2 l 53 1 5 l (48 l 45 10 l 1 20 l 42 1 50 1 39 l 90 l 36 I 99 1 35
. I Maximum l 71' I
Minimum l 33-l LEQ l 46 l , Notes: 10-25, 2:00 P.M. start. 75 yds N of Rout'e.113 on Gypsy Lane. Residential area, with mixed field-and'
. woods on one side of Gypsy Lane. Moderate, 'h-intermittent traf fic -on Route' 110, with occasional buses. Cold.and cloudy, light breeze. Very'little traffic on Gypsy Lane', but one bus went by (noisy). ~
Barking dog at 22-23 minutes of run. 7 g , 1 'f 1 - V A-6 t y-
- _ .J
_ . . _ . . - , , . .. . N.i -
-Site 6, Newburyport-
% Time dB Level l Measured dB Level I
0.1 l 68~ l 1 1 61 1 2 1 58-l 5 l 55 l 10 l 52 1
- 20 l 49 I
50 l 45 l 90 l 41 I 99 l 39 I Maximum l 71 l Minimum l 38 I LEQ l 44 l Notes: 10-25, 3:00 P.M. start.- Cottage Court, one staplight S of Route 113, just off Route 1. Residential, little 1 traffic, except on Route 1 (steady). Cars idle _at stoplight, then _ turn onto Route 1. Upgrade 30 yards away - noise from acceleration. Students walking home and slightly more traffic at about 20 minutes of run. - e A-7
. . ~ , , ..-_. _
Site 7~, Newbury.
% Time dB Level l' Measured dB Level I
.66'
. 0.1 l l-1 1 60 l l 2 1 58
- 1 5 1 54 1
10 l 50 1 20 .I '46 a l 50 l. 39 l . 90 l 33 i I 99 l' 32 i . I Maximum l 70 . I ! Minimum I 31 l LEQ l .6 48 1 4 k i Notes: 1 10-25, 4:00 P.M. start. Elm l Street, on campus of l Governor Dummer Academy, 200. yards W. .of Route 1. Cold, cloudy,.very calm. Light traf fic on .both Elm Street and Route 'l. 4 . i f' . A i
a
~.
~. Site-8, Seabrook-
.% Time dB Level '
l Measured dB-Level 1 0.1 1 72 1 ! 1 l 63' l l l 2 l 61 1
-5 1 57 10 l' 55 1
20 52 50 1 48 I 90 l 44 1 99 I 42 . I Maximum l 80 i Minimum I 40 i LEQ l 54 I I Notes: 11-1, 9:45 A.M.' start. Clear, 500F. Site is-unnamed street on north' side of Route 107, near New Zealand Road halfway between-I-95 and Seabrook plant gate. Steady, moderate traffic on Route 107, _ background noise f rom I-95 and Route 1. Area mostly , residential, including a condominimum development. ; Fuel trucks occasionally on Route 107 - noisy. a 1 A-9'
-_ _ _ _ . _ _ _ _ _ .- __ ..___i_______.-__.__.__.-.___.
Site 9, Portsmouth'
% Time dB Level l Measured dB Level I
0.1 1 71 l l
'l l 64 .j i I i 2 l 63 I I
5 l 60 1 10 l 57 i I 4 20 l. 53 I 50 1 45 I i 90 l 38
; I i 99 I 36 I ..
Maximum l 79-1 Minimum l 34 i LEQ l 54 I Notes: 11-1, 11:15 A.M. start. Site is on Cass Street, between Islington and State in. older residential neignborhood near Portsmouth Center. Light traffic, but a street sweeper.went by in first.five minutes of. i run.- + I A-10 L :-
. _ . - . _ - . _ = . . _ _ _ . _ _ _ _ _ _ _ _ _ __ _ _ - - -
i l Site 10, Portsmouth 1
~
% Time- de Level l JMeasured dB Level'- _
- 0.1 l l 1 1 64-l- 1 2 1 62 1
5 l 60 l 10 1 58-l 20 1 - 56 1 50~ I- 53' I 90 l 45 I 99 I 43 l Maximum l 69-1 Minimum l - 41 l LEQ l 55. l dotes: 11-1, 12 Noon start. Banfield Road, approximately:l/4-mile.S.-of.Peverly Hill Road. Near san _d and gravel-mine, with heavy equipment ' operating. continuously. Light traf fic on Banfield Road. EP
'A-ll b
Site-ll, Rye
% Time dB Level l Measured dB Level I
0.1 l 74~ l 1 1 70 1 2 l 67 I 5 ! 62 l 10 l 58 1 20 1 52 50 l 42 I 90 l 34 I 99 l 32 I Maximum I 76 i Minimum I 31 l LEQ l 56 l Notes: 11-1, 1:15 P.M. start. Washington Road, near intersection of Route 1 and Dow Lane. Residential, with woods and open fields. Very light traffic on Washington Road, with exception of several large trucks. Two jets from Pease AFB flew over. A-12
._ Site 12, North Hampton
~
^
-% Time dB Level l ' Measured dB Leul l
0.1 1 66 l 1 1 57 1 2 l .55 I j_ l / ' 10 1 51 l , 20 l 48 I 50 1 4 0 -' 4 1 90 l 31 I .
! 99 l 31 I
i Maximum l 72 - l
- Minimum I 30 l
4 LEQ l 47 I 4 } l 1 1
! Notes:
11-l', 2 : 15 P . M . s t a r t . Ocean Boulevard (Route 1A) at Willow Avenue. Quite residential area of large ! homes. Very little traffic.- ,, f e b a
<. A-13
Site'13,-Stratham
% Time dB Level l Measured dB Level 1 1 0.1 l 68 l
1 l 59 i 1 -l
- 2 1 57 l l
5 l 53 l 1 10 l 50 i l 20 l 46 l' 50 l 43 l 90 l 40 I 99 l 36 i Maximum l 70 l Minimum l 36 l l LEQ l. 48 , l r Notes: 11-1, 3:20 P.M. start. Stratham Heights Road, , approximately 200 yards E of Route 108, near - intersection of Routes 108 and 51. Steady, moderate traffic on Routes 108 and 51. . Light, occasional traffic on Stratham Heights Road. Area is residential, with some fields and farms and new commercial development (gas stations, shopping
- centers, etc. , on Route 108).
i A-14 7- w- g- m --
1 l Site 14, Salisbury L % Time dB Level l Measured dB Level I 0.1 1 69 l 1 1 62 l 2 1 59 I 5 I 56 l 10 l 53 l
- 20 l 50 1
50 l 45
. I j 90 l 41 . l l 99 l 38 l l Maximum l 73 - ) i ! Minimum l 36 I I l LEQ l .51 I
Notes: 1 11-7, 9:50 A.M. start. 450, clear and windy. Old
. County Road, just off 1A. Light, occasional traffic on lA and Old County. Adjacent to a mobile home park * , on Old County. Subdivision on far side of 1A.
j A-15
'l Site 15, Amesbury
% Time dB Level l Measured dB Level I
0.1 l 69 l 1 1 63
-l 2 l 61 I
5 l 58 I 10 l 55 1 l 20 l 50 1
! 50 l 43 l !
90 l 39 I , 99 l 38 - 1 l Maximum l 71: 1 Minimum l 37 1 LEQ l 51 I i f Notes: 11-7, 11:00 A.M. start. Residential street just off downtown area. Warehouse / abandoned factory on one , side of street. Very'11ght traffic. Location is on High Street, 75 yards from Market Street in central Amesbury. 9 ') A-16 d
- , , v c ~~, , - - w i-
-Site 16, Exeter-
% Time- 'dB Level l Measured dB Level I
' 0 .1 l- 63 .
I 1 1 58.. 1 2 l 57 I 5 l 55 i I
- . 10 1 53
- I i 20 1 51 4
1 : 4
.50 l 48 I
90 l 43 ' I
-99 I 40 I !, Maximum l- 83 ,
- I Minimum l 37 4
l LEQ l 52 i l i i Notes: E . 11-7, 12:30 P.M. start. Mixed commercial and residential area on Center Street, approximately 80 yards off Water Street. Moderate trar?ic on Water Street.- Light traffic on Center Street', but l- occasional noise f rom cars leaving paricing spaces. and l drive-in windows at bank. Ambulance siren near end of -{ run. . ; l
= . l A-17 -)
1 : s .
s Site 17, Newbury
% Time dB Level l' Measured dB Level I
0.1 1 63. I 1 l 58 I 2 1 56 4 1 5 l 52 I , 10 l 49 I 20 l 46 l 50 1 40 I 90 l 36 I 99 1 33 l Maximum l 66 l Minimum I 32 I 9 LEQ l 47 l 1 Notes:
- 11-7, 1
- 45 P.M. start. Newbury Neck Road, 100 yards.E
< of Route 1A,. just south ~of the Parker River. ) Residential, with mixed woods and open fields. Intermittent chain saw motors in background. Very light traffic on both 1A and Newbury Neck Road. 9 n A-18 L. .
4 f F I r i . APPENDIX B SIREN SITES IN l NEW HAMPSHIRE (TABLE 1) I AND MASSACHUSETTS (TABLE 2) i i
?
4 4 I e I i ] i 1 h i I f 4 a 4 s I 4 f - 4 e I t i i i l 1 i ) i 4 e B-1 I l t
s b
~ TABLE 1' i.
SIREN REQUIREMENTS AND LOCATIONS IN THE STATE OF NEW HAMPSHIRE 4
.t I
1 i t s
}
i l 1 1 I i-1 1, 4 I t l l B-2 I 4
SIEN SITES IN TE TDWN OF BRENTWOOD, EW HANSPHIRE Nearest Utility 120/240V Designation Rating Site Pole Secondaries Comment BR-1 125 West side of Picipocket Road 53 2 spans south Set ,just south of dirt-400 ft. south of Rowell Road drive to east. Avoid trees. BR-2 125 Sooth side of Middle Road 48 3 spans east Set by northwest ~ corner - (Route Illa) @pmximately of cemetary. 500 ft. east of Prescott Road BR-3 125 Replace guy pole 3/40S, 395 on 3-39 1 span west north side of South Road, approximately 1000 ft. west of Route 125 BR-4 125 200 ft. south of intersection of 104/1, 34C/1 2 spans south Set north, clear of pinel! North and Prescott Roads, on tree. On west side of Prescott Road BR-5 125 South side of Route 101 166 2 spans' west Locate to east of opening approximately 3200 feet east in stone wall, west of of North Road drive-in screen. O B-3
SIEN SITES IN TE T0w4 0F EAST KINGSTON, EW HAMSPHIRE Nearest Utility 120/240V Designation Rating Site Pole Secondaries Conunent EK-1 125 South side of Route 107 12, 357 5 spans east May need distribution. approximately 1,000 ft east of transfomer. of Route 108 EK-2* 125 Replace existing Town-owned ETCO 37, 72 37, 72 and service pole behind Town Hall on pole to be Main Stmet replaced EK-3 125 South side of Route 107A just east .40/72X, 398 40/72X, 398 of railroad overpass Ek-4 115 East side of Exeter Road (Rt. 108) 486/496 1 span south approximately 0.2 mile south of Giles Road 4
- Existing audible alerting device is installed at this site,
. 84
__.._.-_____..m_ _ _ . _ _ _ _ . _ _ _ _ . _ _ _ - . . _ . - _ . _ . _ _ . , . - --- _ __------- . SIEN SITES IN TE TOWN OF EXETER, EW HAMSPHIRE Nezrest Utility 120/240V- . Pole Secondaries Comment Designation Rating Site 2786, 945-1/2 1 span south Locate by telephone EX-1 115 , West, side of Guinea Road ' connector panels -
. approximately 100 ft north of Haupton Road (Rt. - 101C) 125 West side of Drinkwater Road 1389, 14/1 2 spans north Locate at end of fence -
EX-2 which appears to be a approximately 200 ft south of High Stn:ct (Rt. 101C) . property line i 125 West side of Jody Hill Avenue just 27, 1160 27, 1160 Clear' shrubs. : Locate on - EX-3 l-north of Douglas Way . extended property line-L of Country Club. 125 Northwest corner of parking lot 805 805 (light) EX-4 l behind Town Office Building, i 10 Front Street 1 125 West side of Linden Street, 300 ft 28/165 28/165 Locate adjacent to: EX-5 swampy area north of Gary Lane 125 North corner intersection of 939, 29 939, 29 Stay west of large trees EX-6 Epping Road, and East Industrial Park Road 125 South side of Epping Road J/113/59, 1481 1 span East EX-7
.approximately 800 ft-east of
. Route 101
- 125 . Southeast' side of Kingston Road 148/41 ~148/41' -Locate west clear of-EX-8 (Rt.111) just west of John West trees' Road 115 East side .of Newfields Road ~ 758, 1322 .758, 1322 EX-9 (Rt. 83) approximately 1/2 mile north of Rt.101 North side of Beech Hill Road, 58, 1988 on E. 2-1/2 spans L'ocate'by large stunp -
EX-10 125 just west'of-gate.in approximately 1/4 mile east of- :1989, 59 on W. west
-Old Town Farm Road stone wall 13 - 5
__ .__ ~ . _ . 2 .. _ _- _ , , _ - - . _ . - .
PROPOSED SIEN SITES IN TIE TOWN OF GKEt4_Ato, EW HAMSPHIRE Nearest Utility 120/240V Designation riating Site Pole Secondaries Comment
~
G-1 115 Southeast side of Portsmouth NETCO 179 1 span E. Pole may be on old mill-Avenue and opposite Newington Rd. dam G-2* 125 West side of Cemetary Lane 10/3 1 span N. Locate between sugar
. south of dump entrance maples to minimize tree cuttirg G-3 125 North side of
Dearborn Road 17/3,
3 1 span E. 300 ft. west of Great Bay Road G-4 125 North side of Breakfast Hill Road 84/4 1 span E. Locate north of guard just east of 195 and transmission rail - line I
i SIREN SITES IN TE TOWN OF HAWTON, EW H4WSHIRE y--y
'l Nearest Utility 120/240V l Designation Rating Site Pole Secondaries Comment' HR-1* 125 At north side of entrance to town 1207 1207 Pick @ s@ port of . .
parking. lot south of Fire Station, secondary street ' light Ashworth Road and F Street wires overhead' t.. d HR-2 125 In island of Route 1A just south 2207, 841-2 2207, 841-2 Keep clear of buried of Boars Head Terrace ' street-light wiring HA-3 125 South side of sewage pumping 1137, 8-92 1137, 8-92 , station at Kings Highway and 12th Street HR-4 125 Southwest corner of intersection 21/123, 550 21/123, 550 of Route 1A and North Shore Road H4-5 115 Replace street -light pole #3339 2775, 225/22/25 3339 and Remount existing. street at intersection of North Shore 2775,. light and Woodland Roads 225/22/25 H4-6 125 Tide Mill' Road, south of gate to 1892/15 3 spans east sewage disposal facility.at end of Tide Mill Road HA-7* .125 Replace street light pole #3483 2/219 3483 and Remount existing in parking lot behind town. 2/219 street light offices, Winnacunnet Road and - Academy Street + H4-8 125 West side of Lafayette Road, 15/59 1 span south Locate on extended (Route 1A) opposite Lamson Lane property line of pool-
; supply business- . ,
H4-9 125 West side of Drakeside Road, 3330 1 span north Place north of curve in' T 200 feet south of Towle Farm Drakeside Road -
-Road' l#L-10 125 Northeast side, Hilltop on Exeter 892J 892J Cut small trees; locate Road (101C), approximately 2/10 on extended property line mile southeast of Exeter town line indicated by. stone. wall-
- An existing audiole alerting device is installed at this site.
f 3-7 .
-O
-_-__._m_____________ _.,L.____.__.1__w__ _ _ _ _ _ _ _ . _ _ _ __ _ _ .
1 SIEN SITES IN TE TOIN (F HWTON FALLS, EW HAWSHIE s i Neamst Utility 120/240V Designation Rating Site Pole ! Secondaries- Cet , W-1 125 West side of Rt 1 approximately NETCO 106, 5/9 1 span north 300 ft rorth of Town Cnmann - just
, Auth of blocked drive to west.
. W-2 125 North side of Lampry Rd 4/718 1 span east approximately 500 ft west of and west Crank Rd W-3 125 West side of Rt 88, approximately 147,541 1 van north 300 ft north of Brown and Nason Roads .
! W-4 115 North corner of cemetery on east 471, ETCO 4 471, ETCO 4 side of Rt 88 approximately 1/10 mile south of power lines W-5 115 North side of Frying Pan Lane 1088, 1420/5 1088, 1420/5 (Sanborn Rd extn.) approximately '
900 ft west of King Street e S
SlMN SITES IN TE tow 4 0F KENSINGTON, IED 1%MSPHIE Nearest Utility 120/240V Designation Rating Site Pole _ Secondaries Comment KE-1 115 East side of Amesbury Road 2/42, 255 2/42, 255 Locate in gap in trees (Rt.150)' 300 ft south of Cottage south of American Legion Road Building KE-2 125 North side of Route 107 opposite 1130/1,438 2 spans west Highland Avenue KE-3 125 North side of Osgood Road, 8/765 1 span west Locate clear of trees. approximately 1/4 mile east of Some branches may have to Amesbury Road (Rt. 150) be cut. KE-4 115 West side of Drinkwater Road, just 79/22 2 spans north Locate south of culvert south of. transmission line crossing under road KE-5 125 West side of Shaws Hill Road 22,370 1 span north Locate by old stump clear. opposite Brewer Street of trees O 1 B-9 l l' t
SIREN SITES IN TIE TOWN OF kit (GSTON t FE!] HA49 TIRE Neorcst Utility 120/240V Designation Rating Site Pole Secondaries CC,wnent KI-l 125 East side o" parkirg lot east of FETCO 4,834 FETCO 4.634 Hunt Road to be widened. South Fire Station on ihnt Road, Set pole north to set-just west of intersection with back of fire station Main Street KI-2 125 Northeast corser of parkirq lot 72,150 72,150 Set pole to clear tall north of Public Works Garage on pine trees Main Street KI-3* 125 Southwest corner of pavement west PETCO 26,1561 tETCO 26, Set pole to clear trees of Central Firc/ Police Station, 1561 Maln Street West and Rnch Rimon Road" KI-4 123 South side of Little River Road, 1935, PETCO 11/2 2 spans east approximately 500 feet west of Exeter Road (Route 111) v An existiry audiole alerting device is installed at this site. B-10
SIEN SITE IN TE TOW 4 0F NEn CASTLE, PED HAW 911RE Nearest Utility 120/240V Designation riating Site Pole Secondaries Comment NC-1 125 Tcan Corunon, (on Wentworth Road - No pole runDer Same Set pole 20 feet north Route 19) approximately 200 feet (old military of paved area. 54ay have east of Rifle Range Buildirg pole with light.) to set pole in ledge. Arrange with town for gate key to Common, and to plow access, per Peter Gamester, Ch. Bd. of Sel. B-11
SIEN SITES IN TFE TOwl 0F FEWIELDS, PE1 IMWSHIRE Nearest Utility 120/240', Designation Aating Site Pole Secorxr ries Comment rF-1* 125 Replace light pole 18-3-148 on north 18-3-148 18-3-148 New pole set but not side of Central Fire Station, (3,23/81 on comected 11/17/83 Piscassic St. street) rF-2 125 North side Piscassic Road tETCO 81-105 3 spans W. Clear small trees. (Route 87), approximately 1/2 mile P&G+E 14-2-116 east of I's Crossing in Littlefield
- Existirg auciale alerting device is installed at this site.
=
B-12
, _ __= . _ . . . . _ . _ _ _ _ _ _ . _ _ _ . _ __ ______.____________m_.. . _ - . --.- - - - _ - - - - - - I SIEN SITES IN TrE TOIN OF EWTON, IED HAeFSHIE Nearest Utility 120/240V Designation Rating Site Pole Secondaries Comment E-1 125 - North side of Ca_sids Hill Road, 1201/20551 1201/20551 Apprestimately 200 feet l apprecimately 700 feet west of west of last house on Amao=Fy Road south side E-2* 125 Southeast corner of Fire Station 91/45 91/45 Nount clear of trees to j lot on South Main Street (Route south and east 108) l E-3 125 East side at height of Smith Corner 2-25, 225 1 span north Road, approximately 4/10 mile south of Naslee Crossing Road E-4* 125 Behind Fire Station al West Main 1003 1003 Secondaries may be 440(.' l Street adjacent to school parking lot to sotthmest E-5 125 North side of Pond Street, just 27/77, 423 27/7/, 432 Mount clear of trees on east of railroad tracks inside of curve in road O An eristing adiole alerting device is installed at this site.
SIfEN SITES D4 TrE T0wi 0F NORTH tMWTON, FEC HAWSHIRE Nearest Utility 120/240V Desigrution Rating Site Pole Secondarie_s Comment tW1 125 East side of Old Lock Rmd 33 1 span south locate between large trees appmximtely 1000 ft north of Chapel Street f PH-2 125 East side Woodland Rmd, 9/32 1 span north locate just south of appmxicately 200 ft north of stream crossing Atlantic Averue (Rcute 101D) PH-3
- 125 Replace existing light pole 7,3aCl 2,38C1 remotrit light 2,38C1 benind police station, Atlantic Avenue (Rcute 1010)
FH4 115 East side Lafayette Road 373,l/27 574,l/27 locate north of property (Route 1), appmximately 0.1 line in trees c:ile north of North Road to East PN-5 125 North side of Walnut Avenue on tETCO 3S(?) PETCO 38(?) locate on inside of curve Hilltcp ag:roximtely 3,000 ft M Cff 19-17-44 NHG8E 19-17-44 between large pine trees tti-5 125 South side of North Raad PETCO 8 1 span north locate by southwest corner approxistely 1000 ft north NHG&E 19-15-8 of parking lot of Route 151
- Existirg aucnole alertirq evice is installed at this site.
B-14
l SIIO4 SITES IN TtE CITY OF PORTSMOUTH, PC7 iMM'SHIfE l Nearest Utility 120/240V Designaticri Ratirg Site Pole Secondaries Comment P-1 12> North side Lorrpeadow Road, 30 30T-146-126 30T-146-126 Remove small trees feet east of Lafayette (Route 1) P-2 125 Northwest corner of PSte-1 property Light pole Light pole Replace existing light on Layarette Road (Route 1) north (no rar:ber) (no nurcer) pole, or as directed by of gate to garry PSNH P-3 125 West side Barthwick Avenue, 175, 182-4 175, 182-4 approximately 500 feet north of FETCO 7804-4 PETCO 7804-4 Sherturne Drive P-4 125 West side of Circuit Road 912A7, 20T266-6 912A7, Verify clearance from Extension just north of armory PETCO 912-6 20T266-6 proposed Market Street and south of proposed Market PETCO 912-6 Extension Street Extension - P-5* 125 Park Department Buildirg west of 2-37D 2-37D North of fence gate intersection of Albany Street FETCO 4 FETCO 4 ard Jewles Court P-6 125 South side of South Street 21-5-51 21-5-51 By fire plug on lot-line am rcximately 200 feet west of PETCO 56-50 PETCO 56-50 extended Marston Street P-7 125 East side of Miller Avenue, 50 590, 21-138-41 1 span north Ledge exposed. Pole may feet soutn of Cliff Road PETCO 59-40 on PETCO 39 have to be set in rock P-8* 125 Roof of Central Fire Station, 170 15T-4-161/2 1 span west Accessible from parking Court Street, at location of on 21-4-17, lot on south side of existirg air horn 149-9 building. Location OK with Fire Oiler Paul Long. Analyze / reinforce structure as required
- An existirg atx11 Die alertirg device is installed at this site.
B-15
SIEN SITES IN THE TOWN OF RYE, EW HAWSHIRE Nearest Utility 120/240V - Designation Rating Site Pole Secondaries Comment
^
RY-1 125 Southeast corner of Intersection of ETCO 93 NETCO 93 Ocean Blvd. (Rt IA) and Old Beach - y , Rd - - / RY-2 125 At substation on Lafayette Road PSNH 81/2' PSNH 81/2 Discuss s[ ting ith - -f ' (Rt 1) approximately 30 ft north ' substation, manager of station fence - RY-3 125 East side of Ocean Blvd. (Rt lA) NETCO 70/101 NETCO 70/101 Place close to seawall to opposite Washington Rd 23-7-168 23-7-168 east. RY-4 125 East side of Parsons Rd 38/23 38/23 , Place by vacant lot west approximately 500 ft south of - of Tower. of intersection at Ocean Blvd. + r RY-5 125 Replace guy pole 123S on west side NETCO 123,E' 1 span south of Sagamore Road approximately NHG&E 23-43-45
- 500 f t north of Clark RY-6 125 By small cemetery north side of NETCO 3 1-1/2 spans -
Lang Rd approximately 500 ft southeast- - Northwest of. Washington St. ,
~
RY-7 125 West side of Woodland Rd. Just NETCO 40/2 -- NETCO 40/2 .- north of Hampton Town Line ..- f.
, g
.A B-16 _
.%&,. m' c I ____-_m___
SIREN SITES IN THE TOWN OF SEABROOK, EW HAWSHIRE Nearest Utility 120/240V Designation
~
Rating Site Pole Secondaries Comment S8-1 125 West side of Route 1A between 9,290 9,290 Set N of gas station Newbury and Groveland Streets SB-2' 125 North side of South Main Street 58-507 1 Span W + at W. corner of Exeter and Hampton 2 Span E substation SB-3* 125 Central Fire Station, Rear (South ETC0 6-7 ETCO 6-7 Set just east of water-side) at edge of pavement tower 58-4 125 Near Education Center, Seabrook Site to be selected with PSNH Station S8-5 125 West side of Route 1A at south 997S 997S boundary of PSNH barge dock S8-6 125 Southwest Corner'of Intersection 1496, tETCO 65-1 1 Span South (Secondaries may be 440V30) of route 107 and Batchelder Road, just southwest of right-turn lane SB-7 125 East side of Lafayette Road 275, 1126 27S, 1126 Could replace existing opposite Lakeshore Orive service pole 27S,1126 with tree cutting. . Keep siren close to property line. SB-8 115 South side of Black Snake Road NETCO 12, 890 ETC0 12, 890 Locate approximately approximately 200 feet west of ~ midway between houses True Road on north side of street
- An existirg audible alerting device is installed at this site.
B-17
SIREN SITES IN TE TOWN OF SOUTH HAMPTON, W W HAMSPHIRE Nearest Utility 120/240V Designation Rating Site Pole Secondaries Comment SH-1 125 South side of Highland Street Between 11/1, 433 11/1, 433 Stay within line'of approximately 500 ft. west of and 434, 2 trees. Stay within Route 150 commercial zone. SH-2* 125 Behind southwest corner of 1-36/1, 36 1-36/1, 36 To north of.dunpster. Town Hall on H111 dale Avenue SH-3 125 East side of South Road 427 1 span south Avoid large trees. approximately 400 ft. north of 107A SH-4 115 South side of Hilldale Avenue, NETCO 52 (phone 5 spans east May have to string just east of turnout by pond lines only) primaries. (approximately 7000 ft. west ' of Town Center)
- Existing audible alerting device is installed at this site.
i B-18
, SIREN SITES IN TE TOW 0F STRATHAM, EW HAMSPHIRE Nearest Utility 120/240V Designation Rating Site Pole Secondaries Comment ST-1 125 North corner of intersection of 507/70, 542, 507/70, 542, Wimicut Road and Union Road "155" "155" ST-2 125 West side Routes 101/108 400 ft 5/75, 39 5/75, 39 Locate on extended north of Frying Pan Lane property line indicated
- by fence and trees ST-3 125 North side of Wimicut Road at 507/22, 530 1 span NW and Locate just south of High Street 2 spans SE small trees ST-4* 115 Central Fire Station, 4 Wimicut 2,509 2,509 Locate at edge of Road pavement behind fire station, or as directed by Town ST-5 115 East side of Route 101 just south 985, 5/175 985, 5/175 of power line crossing, 1/4 mile north of Squanpscott Road ST-6 125 South side of Heights Road, 502/66 502/66 Locate clear of.large approximately 1/2 mile east of tree. Some branches may Guinea Road need to be cut. Locate just east _of dirt drive to north B-19 Y
d
. TABLE'2 S_IREN REQUIREMENTS.AND LOCATIONS IN THE COMMONWEALTH OF MASSACHUSETTS w
F 9 O B .
SIEN SITES IN THE TOWN OF AESBURY, MSSACHUSETTS - Nearest Utility 120/240V Designation Rating Site Pole Secondaries Comment AM-1 125 By fire plug, east side, end of ECO 4 ECO4 1. Verify location is on Dewey Street off Bow Street public ROW
- 2. Tortuous access. .May have to bring pole in.
by air AM-2* 125 l40rth side of parking lot for E _ 3F, 2 WE 3F, 2 Town Hall Annex, School Stmet AM-3 125 East side, end of Pow Wow Road, E CO 105-24 E CO 105-24 Pick up secondaries-top of hill overhead AM-5** 125 Replace service pole ETCO 185 on 18S 18S east side of Hillside Avenue
- . (Rt. 150) just north of intersection with Route 110 AM-6 125 East of gate, east side of ECO 6-4, 1 Across road Amesbury Sewage Treatment plant to south 4-AM-7 115 North side of Pleasant Valley Rd. ETCO '52 1 span east Locate on apparent approximately 4600 feet east of property line extension Buttonwoods Road between houses on north ~
side of road AM-8 125 Pond Hill, south side of Old EE 157-6 EE 157-6. Country Road opposite Fifth Street AM-9 125 North side of Kimball Road 133-45 133-45 Between apple trees-approximately 1000 feet southeast of Lions Mouth Road AM-10 '115 East side of Market Street (Route HELCO 5-55. HELCO 5 Locate just north of 150) 100 feet north of. Fern Avenue. _ guard rail ) AM-11 115 East of Congress Street approxi- 1-34 'l-34 Locate about 10 feet 1 mately 1000 feet southwest of north of drain. Fern Street
- An existing audible alerting device is installed at this site.
**There is no Siren AM-4.
B-21
SIREN SITES IN TK TOWN OF ERRIMAC, MSSACHUSETTS
~
Nearest Utility 120/240V Designation Rating - Site . Pole Secondaries Comment MM-1 115 South side of Middle Road on NETCO 76-21 1 pole west, Hillside, approximately 900 feet no pole ,, east of River Road number 144- 2 125 North side of Liberty Street KL-37 KL-37 Stay west of tree. Extension 70 feet east of Church Street on south side of cemetery 144-3 125 Northeast side of Bear Hill Road, 2-59+2-60 1-1/2 spans approximately 800 feet northwest south on of hilltop pole 2-58 m-4 115 North side River Road, 200 feet NETCO 6-77 NETCO 6-77 Poor parking for east of Merrimac Street maintenance vehicle MM-5 115 South side of Highland Street, 47 47 approximately 1200 feet north of Harriman i44-6 115 West side of Heath Road, NETCO 64-1 3 spans north approximately 500 feet north of + KL 8-25X or 3 spans Birch Meadow Road south 1 B-22
SIEN SITES IN TE TOWN OF EWBLRY, MSSACHUSETTS ' Nearest Utility 120/240V Designation Rating Site Pole Secondaries Comment NB-1 125 Replace existing service pole at No ntsnber on service pole summer police station site, inter- service pole. section of Plum Island Turnpike 48-1, 1 and Northern Boulevard NB-2* 125 Northeast corner of rear lot NETCO 81-1, 1 81-1, 1 of Highway Department Garage at intersection of High Road (Route 1A) and Old Pine Island Road NB-3 115 West side of Newbury Neck Road 139 139 Stay in R0W. Clear-at intersection with High Road . branches. I NB-4
- 125 Southeast corner of parking lot, NETCO 26/1 26/1 On land of Vol. Fire -
rear between Town Hall and Association Central Fire Station, Morgan Avenue-NB-5 125 West wide.of Route 1 approximately 1178/92 - Primaries only. Dist. 800 ft. south 'of intersection with Xfmr. needed.
'80ston Street NB-6* 125 Rear between Fire Station and 88' 88 May require additional.-
and Town Hall,-Byfield service pole. "' NB-7 ~'125 - South side of Elm Street 8/65 1 span east Avoid large trees. approximately 100 ft, west of School Street
- Existing audible alerting device is installed at this site.
B-23 1
SIREN SITES IN TFE CITY OF NEWBURYPORT, FMSSACHUSETTS Nearest Utility 120/240V Designation Rating Site Pole Secondaries Comment IP-1 125 South side of Plum Island Fire NETCO 2, IEE 17 10P+120/240 Remove existing 115d8 Station mechanical siren at this site. Install 125dB electrical siren 50 feet above grrand tP-2* 113 North side of Hale Street, 4600 14 10P only, Install ll5dB mechanical feet west of Low Street, by secondaries siren relocated from Pltm urpaved drive to south available Island Fire Station. 1-1/2 spans l west iP-3* 113 Between Winter Street and Route 1 NETCO 66-1 10P & 120/240 Install ll5d8 mechanical just north of Route 113 (High siren relocated from Street) overpass 53rd Street and Southern Boulevard on Plta Island. tP-4 113 South side of High Street opposite NA NA Existing siren Bromfield Stmet IP-5 113 By Cemetary on Noble Street NA NA Existing siren IP-6* 113 East side of Turkey Hill Road tECO 18 30P+120/240 Remove existing 115cB approximately 500 feet south of mechanical siren at end Bayberry of Everette Street and relocate to this point. iP-7 113 South side of Low Street opposite NA NA Existing siren i hnson Street NP-8 113 North end of Dawes Street loop NA NA Existing siren off Ashland Street
- Relocations of existing sirens.
B-24
SIREN SITES IN TtE TOWN OF SALISBURY, MASSACHUSETTS Nearest Utility 120/240V Designation Rating Site Pole Secondaries Comment SA-1 125 Replace existing pole 54/1 on 54/1 54/1 May require pennission Salisbury Beach State Reservation, from Ccan. of Mass. northwest corner of Reservation Rd. and entrance to campground SA-2 125 ' Replace existing light pole 2/98X 2/98X 2/98X on south side of Beach Road (Rt. lA) west of entrance to town parking lot.
, SA-3 125 West side of North Erd Boulevard, 48 48 opposite house Nos. 348/350 SA-4 125 Replace Guy pole, 49S on north side 49 49 Place new pole closer to of Beach Road 1900 ft. west of Old road but behind guard County Road rail SA-5 125 East side of Bridge Road (Rts.1, 61 61 Set approx 20 f t l 1A) approximately 300 ft north of north of fire plug l Ferry Road 1
! SA-6 125 East side of Railroad Avenue 18 18 l Extension just inside Town Park l at end of road. SA-7 125 North side of Main St. 200 ft east 48 48 l of Old Locust St. l l SA-8 125 SW corner of Intersection of Elm 66/4 66/4 Street (Rt 110) and Merrill St. l . SA-9 125 South side of Foley Mill Road 65/10 65/10 approximately 3/10 mile north of Elmwood Street B-25
r
, SIREN SITES IN TE TOWN OF WEST EWBURY, MSSACHUSETTS Nearest Utility 120/240V Designation Rating Site Pole Secondaries Comment W-1 125- Main Stmet (Route.113) at School E CO-3 WCO-3 ' Install on 60 ft-A/G to and Town Offices 20 feet north clear buildings (15.80 of town garage and 50 feet south ft.-pole required).
of Water and Civil Defense Office W-2 125 Dip in Turkey Hill Stmet 1,000 Haverhill 1-1/2 spans feet south of Pikes Bridge on Electric southeast
. south side 31-36 WN-3* 125 Replace existing unused pole EC 2 and no pole 2 spans to Replace existing EC-37 behind fire station number on EC-2 unused pole E C Bache 11or Street
! WN-4 '125 North side of Crane Neck Road ECO-66 2 spans east 2,000 feet east of Middle Street on ECO-68 WN-5 115 Divider between Pawttcket Regional ECO 50-1 ECO 50-1 { High School entrance and Farm ' Lane, 200 feet west. of Route 113 W-6 115 East Side Nain Street (Rt.113) (numbers (ntebers Next pole south is ,
- 200 feet south of Pleasant Street damaged) damaged) ECO-44, NETCO l 51/350 - i
- An_ existing audible alerting device.is installed at this site.
B-26
1 APPENDIX C Tables 3.5.1 1 3.5.2 l l 3.5.3 3.6.1 3.6.2 3.6.3 ORGANIZATIONS TO RECEIVE' EMERGENCY ALERTING RADIO RECEIVERS 1 4 C-1
TABLE 3.5.1 - SCHOOLS IN THE NEW HAMPSHIRE PORTION'0F THE SEABROOK EPZ TOWN / CITY Brentwood Brentwood Schools Brentwood Country Day School East'Kingston East Kingston Schools Mrs. Lavallee's Day Care Center - Mrs. Kemp's Day Care Center Grace Bible Church Day Care Center Exeter Exeter Schools Phillips Exeter Academy Exeter Head Start Exeter Child Care Center-Exeter Day School , ABC Preschool Richie McFarland Childrens Center The Little School Montessori School of Exeter Greenland Greenland Schools Mrs. Gowen's Private Kindergarten Hampton Hampton Schools l Happy Apple Nursery School C-2 1'
- , -~ ,
A SCHOOLS IN THE NEW HAMPSHIRE PORTION OF:THE SEABROOK'EPZ (continued) TOWN / CITY Hampton (cont. ) Sacred Heart School Hampton Christian School The Taylor _ School Aslan's Pride Nursery School l Hampton Falls Hampton Falls Schools Hampton Falls Child Care Center Hampton Falls Kindergarten and Nursery Scnool Kensington Kensington Schools Kingston Kingston Schools Spring Hill School Holiday Kindergarten i Sanborn Regional School South Road Kindergarten Kingston Children's Center New Castle , New Castle Schools Great Island Nursery School Newfields Newfields Schools C-3
SCHOOLS IN THE NEW HAMPSHIRE PORTION OF THE SEABROOK EPZ (continued) TOWN / CITY Newton Newton Schools Teddy Bear Nursery School Happy Hour Nursery School North Hampton North Hampton Schools ! Busy Beaver Kindergarten Montessori Early Learning Center The Whole Child School North Hampton Nursery Portsmouth Portsmouth Schools Country Nursery The First Step Agape Preschool l Community Day Care Center Happy Day Nursery Children's Garden School , St. Patrick's School Bethel Christian Academy
- Alpha Academy Rye Rye Schools Sunshine and Buttercups' C-4
~
SCHOOLS IN THE NEW HAMPSHIRE PORTION OF THE SEABROOK EPZ (continued) TOWN / CITY Rye (cont.) Rye Center for Early Learning Briar Patch Nursery School Seabrook Seabrook Schools' Seabrook Day Care Center Gingerbread House Creative Center South Hampton South Hampton Schools Stratnam Stratham Schools N.H. Vocational Technical School Acorn School The Kids Stop Country Kids Bayview Nursery School Pumpkin Patch Nursery School O C-5
i TABLE-3.5.2
~ BUSINESSES-WITH 50 OR MORE EMPLOYEES IN THE NEW HAMPSHIRE PORTION OF THE SEABROOK EPZ -Exeter- ExeterJ(Cont'd)
A1 rose Shoe'Co. Tyco Laboratories Inc. 1 Rockingham Stree: Tyco Park (120) (5,170) Donnelly Manufacturing Co. Greenland Exeter Industrial Perk (200) GTE. Products Corp. Route 101 Exeter & Hampton Electric Co. (94) 225 Water Street (101) Hampton-Exeter Footwear Co. Inc. Palmer & Sicard 93 Court Street Lafayette Road I (75) (62) GTE Products Corp. Complex'Inc. Portsmouth Avenue 1 Laf ayette Road (600) (65) Nike Inc. Wheelabroter-Frye Inc.
. 156 Front Street Liberty Lane (275) (180)
Exeter Newsletter Foss Manufacturing Co. of NH 255 Water Street Foss Lane (158) (70) Palmer & Sicard Inc. Pearse Leather Products Co., 140 Epping Road Inc. (62) 7 Kershaw Avenue' (60)- Blue Ribbon Sports, Inc. 156 Front Street Kingston . (110) - Kellogg American, Inc. Rockingham County Newspapers Route 125. Inc. (150) P.O. Box 250 (100) Newfields-Milliken and Co. Kingston Warren Corp. Chestnut Street Route 85 (200) (750) C-6
Portsmouth Seabrook Post Machinery Company Bailey Corporation Post Road Route 1 (150) (1,000) Varney Wesley Inc. Hysol Division of the 225 Union' Street Dexter Corp. (70) Folly Mill Road (81) Artisan Specialty Co. Inc. Artisan Building O'Brien D.G. Inc. 72 Mirona Road One Chase Park (50) (100) Booth Fisheries Protective Materials Co., l 1 Booth Avenue Inc. (410) Folly Mill Road (100) Chadwick & Trefethen Inc. 50 Borthwick Industrial Park Spherex Inc. (2,025) Walton Road (53) Diaphragm Industries Inc. 1001 Islington Street Tower Press Inc. (140) Folly Mill doad (60) Erie Scientific Co. Portsmouth Industrial Park Welpro Inc. (250) New Zealand Road (300) John LaFolla Co. Inc. 3 Peverly Hill Road Public Service Co. of (150) New Hampshire The Morley Company 909 Islington Street (50) National Gypsum Company Freeman's Point (110) . New England Homes Inc. Freeman's Point (70) New Hampshire Provision 698 Islington Street (60) Portsmouth Herald /Div. of Thompson 111 Maplewood Avenue (80) 't C-7
TABLE 3.5.'3 MEDICAL FACILITIES IN THE'NEW HAMPSHIRE 4 PORTION OF THE SEABROOK EPZ Location Exeter Exeter Hospital Eventide of Exeter Goodwins of Exeter Exeter Health Care Hampton Seacoast Health Center Odyssey House 22 Tuck Road Portsmouth Wentworth Home 1 Portsmouth Hospital Home for Aged Women Clipper Home Edgewood Manner Chase Home for Children , d
-C-8
[. f-t
P 4 1 TABLE 3.6
' PRELIMINARY LIST 0F ORGANIZATIONS
.TO RECEIVE EMERGENCY-ALERTING RADIO RECEIVERS
.IN THE SEABROOK EPZ MASSACHUSETTS f
Location Quantity-City / Town EOC's 6 State Civil Defense 2 - , Schools (see Table 3.6.1) 26
- Businesses with.50 or more employees (see Table 3.6.2) 29 Medical Care Facilities (see Taole 3.6.3) 17 Other i Parker Wildlife Refuge .1 Salisbury Beach State Reservation 1 U.S. Coast Guard, Plum Island 1 Boy Scout Camp, Amesbury ,1 Total. 84 i
L , 5 I 1 C-9. 4 4
TABLE'3.6.1 SCHOOLS IN MASSACHUSETTS PORTION OF THE SEABROOK EPZ T0kN/ CITY Amesbury Amesbury Schools Horace Mann School Congress Street Amesbury Country Day School 186-Market Seventh Day Adventists School Monroe Street Charles C. Cashman Friend Street Harbor Schools, Inc. (2 units) Pleasant Valley Road Miss Rose's Child Care Center ' Route 110 & Main Street Merrimac Merrimac Schools Whittier Regional School Newbury Newbury Schools l Harbor School 24 Rolfe's Lane Harbor School 28 Rolfe's Lane Governor Dummer Academy Newburyport Newburyport Schools Immaculate Conception Green & Washington Streets C-10
SCHOOLS IN MASSACHUSETTS PORTION OF THE SEABROOK EPZ (continued) TOWN / CITY Newburyport (cont.) Kinder-Care Learning Center My School , YMCA - State Street Spring Street Montessori The Children's House 23 Chapel Street Murray's Nursery School 13 Federal Street f Salisbury Salisbury Schools Kiddie Corner Nursery 16 John Street West Newbury West Newbury Schools Pawtucket Regional The First School 893 Main Street, W. Newbury e
-I o C-11
s TABLE 3.6.2 BUSINESSES WITH 50 OR MORE EMPLOYEES IN THE MASSACHUSETTS PORTION OF THE SEABROOK EPZ Anesbury Amesbury (cont'd) Amesbury ' Metal Products Corp. Microfab, Inc. 39 Gakland Street Haverhill Road (100) (200) Amesbury Plastic Inc. Maple Wood Products Co. Noel Street 60 Merrimac Street (200) (56) 4 Associated Environmental North Shore Weeklies,.Inc. Systems 21 Elm Street 10 Industrial Way (60) (450) R&G Mfg. Co. In-Brazonics Inc. 63 Clinton Street Haverhill Road (65) (80) ' Alexander Syvinski Cado Fabrications 38 Collins Avenue 144 Elm Street (99) (65) Haverhill Gas Co. Cargocaire Engineering Chestnut Street Corp. (139) 79 Monroe Street (150) Nerrimac Essex County Gas Co. Engel-Lewis Counter Co., Inc. 7 North Hunt Road Liberty Street ; (113) (150) 1 Flexaust Company Newburyport Chestnut Street (50) Berkshire Manufactured Products'Inc. Henschel Corporation 116 Parker Street 14 Cedar Street (90) (150) Newbury Tanning Corp. Lebanon-Bonney Co. 12 Federal Street 4 6 Chestnut Street (80) (55)
- Gould Inc.
Merrimac Valley Foundry Co. 374 Merrimac Street 58 Mill Street- (500) (50) C-12
Newburyport (cont.) Stride Rite Corp. Perkins Way ' (100) Leary's Beverages Inc. . 504 Merrimac Street (80) L&V Electroplating Corp. 5 Greenleaf Street (65) Owens-Illinois Inc. Parker Street (200) S. Starensier Inc. 5 Perkins Way (99) - Towle Mfg. Company 260 Merrimac Street (1300) ,
) Amesbury Specialty Co.
Parker Street (50) Salisbury (MA) Vaugnn Corp. 386 Elm Street i (65) i d 1 4 1 C-13
~
TABLE 3.6.3 MEDICAL FACILITIES IN THE MASSACHUSETTS PORTION OF THE SEABROOK EPZ Location Amesbury Amesbury Hospital Highland Avenue Amesbury Nursing and Retirement Home 22 Maple Street Hillside Nursing Home 29 Hillside Maplewood Manor Nursing Home Morrill Place Eastwood Rest Home 39 High Street North Eastwood Rest Home 276 Main Parkside Rest Home 56 Sparnawk Merrimac Merrimac Home Merrimac Dialysis Facility Newburyport Anna Jacques Hospital Highland Avenue Brigham Manor Nursing dome 77 High Street Country Manor Convalescent Home, Inc. Low Street Port Manor Nursing Home Home for Aged Men (Newburyport Society) 361 High Street C-14
-Location Newburyport (cont.)
Home for Aged Women _(West) Home for Aged Women-(East) . .
-Salisbury Greenleaf House Nursing Home 353 Elm Street i
i l i i i 4 C-15
s 1 ! APPENDIX 0 l SIREP COMPUTATION PROCEDURES USED FOR THE ANALYSIS OF SIREN' COVERAGE t h i J .a .I 0 T 9 4 A 1 1 1 0-1
1
; SIREP COMPUTATION PROCEDURES
$ For each' of 16 compass bearings from a siren, SIREP'tries i a series of different' ranges, starting as close to the siren as
- 150 feet and going out to a maximum of 20,000 feet. The sound loss
- (attenuation) for each range is computed and subtracted from the siren level at 100 feet. ' It is then determined whether or not one of the desired levels of 60 d8 or 70 dB has j been passed. If so, the range to that-level is placed at half j I
{ the distance between the present range and the prior one.. i
- Successive range steps are separated by a factor of 10 exp
. ((log 2)/10), which yields approximately a 1 dB step in
- attenuation.
f- SIREP computes and sums the effects of the following sources of sound attenuation: Spherical Divergence i
. ,l
- The siren is treated as a point source radiating energy l into space, so the sound intensity decreases with the square of f the distance from the source-(" inverse square law"). This j creates a loss of 6 dB for each doubling of distance from the
[ 100 ft. reference level. See Ref. 1. L i l Atmospheric Absorbtion i f Atmospheric absorbtion is computed using the equations of i ANSI SI.26-1978 (Ref. 2). ~ I i l Attenuation by Forests ~ i i Attentuation through' forests is a strong function of - i frequency, and depends upon the types of plants in the forest. - Experimental data are quite variable (Ref. 3) and available . tneory is not practical to apply in practice (Ref. 4). .; l D-2
.y -y-7.- ,,,.,...-.-*-,-.-e .---,y-m-, ,- -,c,, s .-, * =~ -
1 4 I In the= frequency' range at-which most outdoor acoustic
. warning devices operate,' forest attentuation results from ..
g> scattering by--tree trunks, and accumulates to a maximum within' ' the first few hundred feet of forest. Computations by SIREP are an adaptation of the attenuation. rates proposed by'Keast (Ref. 5), with the attenuation as a function of' frequency. established 6n the-basis of the range of tree trunk diameters typical of the site (generally 6 in.-18 in. in the northeastern U.S.). g (i SIREP accumulates forest attenuation linearly in the first 250feetofforest,uptoamaximumof10dB(Ref.$6). Ground Absorbtion
- Ground absorbkion results'from the interference between the direct sound wave from the siren to the listener and other sound waves reflected off the ground. It is a detailed function of local geometry, ground impedance at the point (s) of re f ection, and sound frequency. The theory.(Chessel, Ref. 7):
is well developed but impractical to apply except at very short ranges over uniform ground. ; SIREP uses an empirical algorithm based-upon the data of Parkin and Scholes (Refs. 8, 9) and other experimental data. Ground absorbtion i is accumulated linearly up to c 1000 feetstrom g y the siren, and is fixed beyond that distance.. Ground absorbtion is accumulated linearly up to 1000. feet-from the siren, and is fixed beyond that distance. GrcJnd absorption is l a function of siren-frequency. It is ignored above 1000 Hz, and increases with decreasing frequency below 1000 Hz to a "
- maximum of about 10 dB. -
y , Wind Shadow-
~
To compute. wind-shadow effects, SIREP assumes level ground and a horizontally uniform, vertically stratified. atmosphere. with constant' wind; direction, while temperature and wind speed
. vary with.the logarithm of height. The method of Nyborg and; 0-3. :
s
- - _ - _ _ _ = _ =
Mintzer (Ref 10) is then applied to compute the distance to the shadow, if any, as a function of azimuth. Within the shadow, attenuation is accumulated with range as reported by Wiener and Keast (Ref. 11) to a maAimum of 20 dB. Built Up Areas SIREP assumes a fixed 10 dB loss in built-up areas to account.for reflection and refraction by buildings and loss of line of sight to the siren. This empirical number is based upon traffic-noise studies (Ref. 6). It gradually disappears in upwind shadows. Hills and other Large Barriers SIREP computes attenuation Dehind hills and other large barriers by applying _the method of Maekawa (Ref. 12). Level-ground is assumed except for the barrier. When the user enters a barrier height that is below siren level, such as could occur . in sloping terrain, SIREP assumes the barrier is 5 feet above the siren elevation. Barrier attenuation is reduced downwind to allow for j downward curvature of the sound paths. I \ l
- D-4
References
- 1. L.L. Beranek (ed. ), Noise and Vibration Control, Sec.
1.3.2. McGraw-Hill Book Co., NY, 1971.
- 2. Anon., "American National Standard Method for the Calculation of the Absorbtion of Sound in the Atmosphere",
Acoustical Society of America, 335 E. 45th St., NY, NY, 10017, 1978.
- 3. Ref. 1, Figure 7.12, pg. 183.
4 Aylor, D., " Sound Transmission Through Vegetation in Relation to Leaf Area Density, Leaf Width, and Breadth of Canopy," J. Acoust. Soc. Amer., 51, 411-414, 1972.
- 5. Keast, D.N., " Development of a Procedure for Predicting Noise Environments Around Industrial Sites," J. Acoust.
Soc., Amer., (A), 1975. 6 National Cooperative Highway Research Program (NCHRP) Report 112, " Highway Noise - A Design Guide for Highway Engineers", 1971. 7 Chessel, C.I., " Propagation of Noise Among a Finite Impedence Boundary", J. Acoust. Soc. Amer., ~62, p. 825, October 1977. ~
- 8. Parkin, P.H. and W.E. Scholes, "The Horizontal Propagation of Sound from a Jet Engine Close to the Ground, at Radlett", J. Sound and Vibration, 1, pp. 1-15, 1964 9 Parkin, P.H. and W.E. Scholes, "The Horizontal Propagation of Sound from a Jet Engine Close to the Ground, at I
) Hatfield", J. Sound and Vibration, 2- (4), pp. 353-374, 1965.
- 10. Nyborg, W.L. and D. Mintzer, " Review of Sound Propagation in the Lower Atmosphere", WADC Technical Report 54-602, Sect. 1.5.5, p. 50 et seq., May 1955.
- 11. Weiner, F.M. and D. N. Keast, " Experimental Study of the I Propagation of Sound Over Ground", J. Acoust. Soc. Amer.,
i 31, 724-733, 1959.
- 12. Maekawa, Z., " Noise Reduction by Screens of Finite Size",
Memoirs of Faculty of Eag., Kobe Univ., Japan, 12 1-12, 1966. See also Ref. 1, Sec. 7.6. 1 0-5 k i____________
i o FJGURE 2.1 TOPOCRAPHIC MAP OF THE PLUME EXPOSURE PATHWAY EPZ FOR SEABROOK STATION l' i e h e t fi f i
.i ,
I i fl k L - - - - _ _ _ _ . . - _ _ _ _ i
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l FIGURE 2.2 LOCATIONS WHERE THE NEED FOR AT LEAST 70 dB (C) COVERAGE HAS BEEN ASSUMED l r 4 I l l l l l t i e 6 i l l i O
L (- FIGURE 2.3 SITES AT WHICH AMBIENT BACKGROUND NOISE
, WAS MEASURED \
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FIGURE 3.1 b LOCATIONS OF SIRENS TO BL ALERTINGIN USED FOR THE PUBLIC SEABROOK EPZ 4-
% I 1
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I FIGURE 3.1 i LOCATIONS OF SIRENS TO BE USED FOR PUBLIC l 7 L ALERTING IN THE SEABROOK EPZ
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-6 AREAS WHERE COVERAGE IS ESTIMATED TO BE 60 dB(C) OR MORE WITHIN THE' SEABROOK.EPZ f.
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7 i 'l I FIGURE 3.3 AREAS.WHERE COVERAGE IS ESTIMATED TO BE
-70 dB(C) OR MORE WITHIN THE SEABROOK EPZ' l
l i 2. _ _ _ _ . _..___.____.________m _ _ __i_. ' _ _ _ _ _ .____._.__..____._m_ _ _ _. __ . _ _ _ . _ _ __ . . _ . _ _ _ _ . _ _ _ . _ . _ _ _ _ _ _ _ _ _ _ _ _ . . . - _ _ _ . _ . _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
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l FIGURE 4.1 COMPUTED SOUND LEVEL CONTOURS FOR TYPICAL SUMMER DAYTIME CONDITIONS (SE WIND) I I I G ji - i i 1 l
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FIGURE 4.2 COMPUTED SOUND LEVEL CONTOURS FOR TYPICAL SUMtER NIGHTTIME CONDITIONS (SW WIND) l f l I e I ..
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FIGURE 4.3 COMPUTED SOUND LEVEL Coltr0URS FOR. STORMY SFRING/ FALL CONDITIONS (" NORTHEASTER"-NE WIND) 9P
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