Text

Forwards Duane Arnold Energy Ctr Site Specific Offsite Radiological Emergency Preparedness Alert & Notification Sys QA Verficiation. Rept Summarizes Engineering Design Sys.Sys Adequate in Event of Radiological Emergency at Site
	ML112212164
Person / Time
Site:	Duane Arnold
Issue date:	01/16/1990
From:	Gordon Peterson; Federal Emergency Management Agency
To:	Taylor J; NRC/EDO
Shared Package
ML112212165	List: ML112212164;
References
	RTR-NUREG-0654, RTR-NUREG-654 NUDOCS 9002060014
	Download: ML112212164 (274)
	v • d • e

50-331 DUANE ARNOLD SITE-SPECIFIC OFFSITE RADIOLOGICAL PREPAREDNESS ALERT NOTIFICATION SYSi QUALITY ASSURANCE VERIFICATION LTR.DTD. 1/18/90 9002060014

-1N0TICE-,

THE ATTACHED FILES ARE OFFICIAL RE CORDS OF THE RECORDS & REPORTS MANAGEMENT BRANCH. THEY HAVE BEEN CHARGED TO YOU FO R A LIMITED IME PERIOD AND AMUST BE RETURNED TO THE RECORDS & ARCHIVES SERVICES SECION P1-122 WHITE FLIN LESE DN SEND DOCUMENTS CHAR GEl THROUGH THE MAIL. REMOVAL OF ANY PAGE(S) FROM DOCUMENT FOR REPRO DUCTION MUST BE REFERRED TO FILE PERSONNEL.

-NOTICE-

DUANE ARNOLD ENERGY CENTER SITE-SPECIFIC OFFSITE RADIOLOGICAL EMERGENCY PREPAREDNESS ALERT AND NOTIFICATION SYSTEM QUALITY ASSURANCE VERIFICATION Prepared for Federal Emergency Management Agency Washington, D.C. 20472 Under Contract No. EMW-83-C-1217 September 14, 1989

TABLE OF CONTENTS I. INTRODUCTION 1 A. Identification 1

1. Site Information 1

2. Governments Within The 10-Mile Emergency Planning Zone 3 B. Scope Of Review 4

1. Emergency Plans For Offsite Response Organizations 4

2. Alert And Notification System Design Report 5

3. FEMA Evaluation Findings 5 II. FINDINGS FOR EVALUATION CRITERION E.6 6 A. Administrative Means Of Alerting (E.6.1, FEMA-REP-10) 7 B. Physical Means Of Alerting (E.6.2, FEMA-REP-10) 12

1. Sirens (E.6.2.1, FEMA-REP-10) 12

2. Special Alerting (E.6.2.4, FEMA-REP-10) 26

3. Institutional Alerting (E.6.2.4.2, FEMA-REP-10) 27 III. FINDINGS FOR EVALUATION CRITERION N.1 28 IV. FINDINGS FOR EVALUATION CRITERIA E.5, F.l, N.2, N.3, AND N.5 34 REFERENCE LIST 35 APPENDIX A: OSPM Topographical Profile Charts OSPM Topographical Input Data OSPM Siren Sound Pressure Level Input Data OSPM Meteorological Input Data OSPM Siren Sound Pressure Level Output Data APPENDIX B: Sample Size Determination

Duane Arnold Energy Center Site-Specific Offsite Radiological Emergency Preparedness Alert And Notification System Quality Assurance Verification State Of Iowa Benton County Linn County I. INTRODUCTION A. Identification

1. Site Information The Duane Arnold Energy Center is located in east central Iowa in the western portion of Linn County, approximately 10 miles northwest of the city of Cedar Rapids, Iowa (1980 census population 110,243 persons) and 35 miles northwest of Iowa City, Iowa. The plant is situated on the western side of a north-south reach of the Cedar River, approximately 2.5 miles north-northeast of the town of Palo, Iowa (1980 population 529 persons). 1 ,2 The area surrounding the Duane Arnold Energy Center site is used primarily for agricultural purposes.

The major harvested crops are corn, oats, and soy beans, while the major livestock animals are cattle and hogs. Poultry is also a significant farm pro duct. The industrial activities within 10 miles of the Duane Arnold Energy Center are confined prin cipally to the Cedar Rapids-Marion metropolitan area.

1

The topography of the site varies. A relatively flat plain (approximately 750 ft. above mean sea level) ex tends from the site towards the town of Palo to the southwest, and most of this land is farmland. Across the river from the site, the land rises to an eleva tion of approximately 900 ft., these slopes are heavi ly wooded with only an occasional field or pasture dotting the landscape. Beyond this rise, the terrain is gently rolling farmland. Immediately adjacent to the east of the site is another heavily wooded low area that constitutes the current flood plain. This area is very flat and extends approximately 1,500 ft.

to the west bank of the river.1,3 Recreational activities in the vicinity of the Duane Arnold Energy Center include fishing, boating, swim ming, camping, and hunting. The Pleasant Creek State Park is located 3 miles northwest of the plant site, within 1 mile of the west bank of the Cedar River.

Directly east of the site and adjacent to the east bank of the river lies the Wickiup Hill Conservation Area, used primarily for hiking, camping, and hunt ing. Other recreational areas include Palo Marsh Wildlife Refuge and Chain Lakes County Park, located 2 and 5 miles south of the plant site respectively, in the Cedar River floodplain; Morgan Creek Park, located 9 miles south of the site; and the Lewis Bottoms Park and Game Preserve, located 3 miles north of the site along the Cedar River. (In the vicinity of the Duane Arnold Energy Center site, the Cedar River is not navigable.) 1 ,3 2

2. Governments Within The 10-Mile Emergency Planning Zone The emergency planning zone (EPZ) for the Duane Arnold Energy Center is an irregular shape that approximates a 10-mile-radius circle. The originally designed EPZ was modified to include areas of Cedar Rapids and Marion outside the 10-mile-radius circle with the station as the center point. This EPZ is situated in two counties: the eastern two thirds of the EPZ is located in Linn County and the western one-third is located in Benton County. Linn County, although it includes the Cedar Rapids-Marion metropolitan area, is predominantly rural. Benton County remains a typical agricultural area. The Duane Arnold Energy Center EPZ is located entirely within the State of Iowa and Benton and Linn Coun ties.

The 1980 resident population of the Duane Arnold Energy Center EPZ was 148,271 persons. Populated areas located within the Duane Arnold Energy Center EPZ include Cedar Rapids (located between 8 and 14 miles southeast of the plant, 1980 population 110,243 persons); Marion (located 10 miles east southeast of the plant, 1980 population 19,474 persons); Hiawatha (located 6.5 miles southeast of the plant; populatioii 4,825 persons); and Center Point (located 6 miles north of the plant, population 1,591 persons).

Smaller communities in the EPZ include Atkins, Shellsburg, Urbana, Alburnett and Robins. Aside from these areas of population concentration, the EPZ is primarily rural and sparsely populated. 2 ,3 3

The map in Appendix C to reference 3 of this report identifies the area within the Duane Arnold Energy Center EPZ with a population density greater than 2,000 persons per square mile. This area includes portions of the cities of Cedar Rapids, Marion, and Hiawatha, all located in the southeast portion of the EPZ. 3 B. Scope Of Review

1. Emergency Plans For Offsite Response Organizations Both the Iowa Electric Light and Power Company's reports, "An Off-Site Emergency Plan Prompt Alert And Notification System Addendum For The Duane Arnold Energy Center" 3 and "An Off-site Emergency Plan Prompt Alert and Notification System Addendum For The Duane Arnold Energy Center" (Revision 3: July 1989)13 describe the public alert and notification system evaluated in this quality assurance verification review. State and local emergency response plans and implementing instructions applicable to this review are included in the:

State of Iowa,. "Iowa Radiological Emergency Re sponse Plan, Section B, Nuclear Power Plant Accident/Incident (Part IV of Iowa mergency Plan)," Revision 6, September 1987;

. Benton County, "Benton County Radiological Emer gency5Response Plan," Revision I, September 15, 1988; and

. Linn County, "Linn County Radiological Emergegcy Response Plan," Revision, September, 15 1988.

References 3 through 6 and reference 13 document the administrative means established for notifying and providing prompt instructions to the public within the Duane Arnold Energy Center EPZ.

4

2. Alert And Notification System Design Report The physical means established for alerting the pub lic within the Duane Arnold Energy Center EPZ are documented in the following:

Iowa Electric Light and Power Company, letter from David L. Wilson, Manager, Nuclear Licensing and Emergency Planning, to Mr. Robert S.

Wilkerson, Chief, Field Operations Branch, Technological Hazards Division, Federal Emergency Management Agency, dated October 21, 1986, enclosing one copy of "An Off-Site Emergency Plan Prompt Alert And Notification System Addendum For The Ruane Arnold Energy Center," dated October 1986 and "An Off-site Emergency Plan Prompt Alert and Notification System Addendum For the Duane Arno Energy Center," Revision 3 dated July 1989. (These letters and corresponding enclosures are hereinafter referred to as the Design Report.)

3. FEMA Evaluation Findings The Federal Emergency Management Agency (FEMA) Region VII and the Regional Assistance Committee have evalu ated the following offsite emergency preparedness exercise for the Duane Arnold Energy Center:

. FEMA, "Exercise Evaluation of the Implementation of State and Local Radiological Emergency Response Plans Conducted November 18, 1986 and the Remedial Exercise Conducted January 22, 1987 for t~e Duane Arnold Energy Center," February 11, 1987.

. FEMA, "Exercise Evaluation of the Implementation of State and Local Radiological Emergency

Response Plans Conducted November 9, 1988 and the Remedial Exercise Conducted December 1, 1988 for the Dyane Arnold Energy Center," January 9, 1989.

5

II. FINDINGS FOR EVALUATION CRITERION E.6 The Design Report describing the alert and notification system for the Duane Arnold Energy Center was reviewed against evaluation criterion E.6 and Appendix 3 of NUREG 0654/FEMA-REP-1, Revision 1, "Criteria for Preparation and Evaluation of Radiological Emergency Response Plans and

.Preparedness in Support of Nuclear Power Plants" (herein after referred to as NUREG-0654/FEMA-REP-1, Rev. 1). This evaluation criterion states:

-Each organization shall establish administrative and physical means, and the time required for notifying and providing prompt instructions to the public within the plume exposure pathway Emergency Planning Zone. (See Appendix 3.) It shall be the licensee's responsibility to demonstrate that such means exist, regardless of who implements this re quirement. It shall be the responsibility of the Stat and local governments to activate such a sys tem.

The bases for review against this evaluation criterion were the corresponding acceptance criteria of FEMA-REP-10, "Guide for the Evaluation of Alert and Notification Systems for Nuclear Power Plants"9 (hereinafter referred to as FEMA-REP-10). This-quality assurance verification review was performed to make a determination of alert and notifi cation system adequacy prior to conducting a demonstration of this system for the Duane Arnold Energy Center.

Based upon this quality assurance verification review, ERC Environmental and Energy Services Company (formerly International Energy Associates Limited) concluded that the design and implementation of the alert and notification system for the Duane Arnold Energy Center and its supporting procedures conformed sufficiently to the acceptance criteria, as stated in FEMA-REP-10, for 6

evaluation criterion E.6 of NUREG-0654/FEMA-REP-1, Rev. 1, to support a FEMA finding that the alert and notification system is adequate.

This portion of the quality assurance verification review evaluates the Duane Arnold Energy Center's alert and notif ication system against FEMA-REP-10 acceptance criteria in the following areas: the administrative means of alerting, the physical means of alerting, and the special alerting methods.

A. Administrative Means Of Alerting (E.6.1, FEMA-REP-10)

The Design Report specifies those organizations or individuals within the state and local governments who are responsible for recommending alert and notification system activation for the Duane Arnold Energy Center.

The decision logic shown in Figure 1 of this report was developed after a review of the current emergency procedures and implementing instructions for the Duane Arnold Energy Center, the State of Iowa, and Benton and Linn Counties.

The current emergency procedures document the responsi bilities concerning the alert and notification system activation process from the time the emergency message is conveyed from the Duane Arnold Energy Center control room to the state and county warning points and to the state and county officials who are responsible for making the decision to activate the public alert and notification system. As Figure 1 indicates, these procedures satisfy FEMA-REP-10 acceptance criteria.

7

FIGURE 1 DUANE ARNOLD ENERGY CENTER ALERT AND NOTTFTCATTON SYSTEM ACTIVATION DECISION/ACTION SEQUENCE DIAGRAM During non-duty hours, state notification is made -- Siren system may also be activated by Benton County. ~eSupplemental alerting methods include N4OAAweather to the Tow& State Patrol Communications Dispatcher. radio, county civil defense and municipal fire depart ment. sirens, and emergency vehicle alerting.

In the event of an incident at the Duane Arnold Energy Center, emergency information is disseminated and requests for assistance made via dedicated commercial telephone lines. A conference hot line using speaker phones is established linking the state Emergency Operations Center (EOC) and the Benton and Linn county EOCs. A dedicated Health Physics phone line links the Iowa State Department of Health (ISDH) with the University of Iowa State Hygienic Laboratory (UHL) and the Radiological Monitoring Team coordinators at the utility's offsite Emergency Operations Facility (EOF).

Backup communications systems include the Iowa Law Enforcement point-to-point radio alarm system linking the Benton and Linn county sheriff departments with the Iowa State Department of Public Safety Communications Center as well as the Microwave Teletype System.

Initial determination of an emergency classification which may require protective actions is made by the Shift Supervising Engineer at the Duane Arnold Energy center. The Supervising Engineer initiates the notifi cation process by contacting the state and county warn ing points simultaneously via the dedicated conference hot line telephone system, providing the emergency classification, and recommending the appropriate protec tive actions.

During regular work hours state notification is made to the Iowa Disaster Services Division (IDSD)

Communications Dispatcher, who verifies the message by return phone call. The dispatcher then notifies the IDSD Duty Officer and/or Administrator, Benton and Linn Counties, and all state agencies having response roles.

9

During non-duty hours state notification is made to the Iowa State Patrol Communications Dispatcher, who verifies the message and make the notifications as listed above. Command and coordination of the emergency response at the state level is exercised by the Governor and/or the IDSD Administrator from the state EOC, which is located in Des Moines.

County notification is made by the Supervising Engineer at the Duane Arnold Energy Center to the Linn and Benton Counties sheriffs' communications centers (the respective county civil defense communications centers will serve as backup notification points). Upon verification of the messages by return phone call to the Duane Arnold Energy Center control room, the county communications dispatchers begin fan-out notification of key county and municipal personnel by telephone call list, radio, or pager. (Notification of the counties by the state will serve as redundant notification/verifi cation.) The Linn County Communications Dispatcher notifies the county Civil Defense Director (CDD), who activates the Linn County EOC, while the Benton County Communications Dispatcher notifies the county Civil Defense and Disaster Services Emergency Management Coordinator (EMC), who activates the Benton County EOC.

Any necessary protective actions are initiated by these county direction and control officials based on recommendations made by the Duane Arnold Energy Center Supervising Engineer and concurred with by the Governor, ISDH, and UHL.

The activation of the prompt notification siren system can be accomplished from either the Benton County EOC or 10

the Linn County EOC in coordination with recommendations from IDSD. The primary responsibility for the activation is with Linn County, with Benton County acting as-the secondary activation point. Similarly, activation of the Area 11 Emergency Broadcast System (EBS) via dedicated telephone line is the primary responsibility of Linn County, with Benton County acting as the secondary activation point. These primary responsibilities do not preclude Benton County officials from activating the siren system or the EBS Common Program Control stations (Primary Stations WMT-AM/FM, Cedar Rapids) should-these systems not be activated prior to Benton County's needs. Once activation of the siren and EBS systems is complete, the activating county immediately notifies the other county of the action taken.

The Common Program Control stations are monitored for the EBS tone by other stations on the area EBS network.

These stations are capable of broadcasting official information 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> per day, 7 days per week, and have emergency power available. All EOCs have radio and television capability to monitor the pre-scripted emergency broadcast messages.

The Linn County EOC has a dedicated Civil Defense Direct Line Telephone System link with area radio stations (KQCR, KCRG, KCCK, KHAK, and WMT) and two television stations (KGAN, KCRG), as well as public safety agencies and schools. All phones on the system ring simultane ously when the Linn County Civil Defense Director instructs the Cedar Rapids Fire Department dispatcher to 11

activate the system. The school warning point is also on the direct line system and once notified transmits a fan-out message to appropriate school officials and individual schools. In addition, a direct audio transmit site is located in the Linn County EOC so that emergency information may be broadcast directly to the public from the EOC via the local radio stations.

Additional alerting systems such as county.and municipal civil defense siren systems, alerting by police, fire, or rescue vehicles, and institutional alerting systems are described in Section E.6.2.4, Special Alerting-.

B. Physical Means of Alerting (E.6.2, FEMA-REP-10)

As described in the original Design Report and Revision 1, the physical means of alerting for the Duane Arnold Energy Center consist of 87 originally designed fixed siren units and 22 fixed siren units added after this initial acoustical analysis. 3 ,1 2 ,1 3

1. Sirens (E.6.2.1, FEMA-REP-10)

The Duane Arnold Energy Center siren alerting system, as submitted in the original Design Report, was evaluated in accordance with the design evaluation methodology detailed in "Analysis of Siren System Pilot Test." 1 0 The original siren system as analyzed consists of the following mix of sirens manufactured by Federal Signal Corporation and Whelen Engineering Company:

12

Siren Rating Quantity Model (at 100 ft.) Type 1 FS-SD10 109 dBC Omni-directional 1 FS-3T22 113 dBC Omni-directional 16 FS-1003 122 dBC Rotating 8 WS-2000 115 dBC Rotating 61 WS-3000 123 dBC Rotating Siren locations, mounting heights, and ratings are shown in Table 4-1 of Appendix B of the Design Report. The siren locations are also indicated on the Siren Contour Map in Appendix C.

Anechoic-chamber measured octave band sound pressure spectrums supplied by the siren manufacturers were used to verify the rated output of all of the sirens.

Routine siren testing procedures and operability for the Duane Arnold Energy Center siren system have been reviewed and determined to satisfy FEMA-REP-10 operability requirements.

The evaluations of the siren system design calculation procedure was conducted by:

" Verifying the design calculation procedure as presented in Section 2.4.2 of the Design Report against the 10 dB loss per distance doubled attenuation rate in the absence of special conditions; and

" Ascertaining the adequacy of the design procedure in the presence of site-specific topographical and meteorological conditions through comparison of the design procedure th the Outdoor Sound Propagation Model (OSPM) 13

The Duane Arnold Energy Center siren alerting system design used Figure 1 of CPG 1-1711 in the absence of intervening topographical features to predict the siren ranges to 70 dBC. The ranges from 70 dBC to 60 dBC were then computed based on an attenuation rate of 10 dB loss per distance doubled. Kurze's point source barrier attenuation formulation, with a cap of 24 dB maximum reduction, was then applied through visual inspection of USGS topographic maps to topo graphical features representing acoustical barri ers. A logarithmic super position procedure was formulated for computing the locations of the 70 dBC contour lines which were influenced by two sirens (irrespective of rotating or omni-directional siren types). However, no credit was taken for this additive effect when computing the 60 dBC contours.

These procedures were applied to the entire system of 87 fixed sirens resulting in the Siren Contour Map in Appendix C of the Design Report. The map also depicts one geographical area in the southeast corner of the EPZ with a population density greater than 2,000 persons per square mile.

This quality assurance verification review seeks to ascertain whether this design procedure, namely the 10 dB loss per distance doubled attenuation rate, adequately accounts for the site-specific terrain and weather conditions and whether the siren alerting system (as designed) does indeed meet the FEMA-REP-10 acceptance criteria.

Eleven sirens, depicted on the U.S. Geological Survey's Cedar Rapids North quadrangle map (see Figure 2 of this report), were selected for this quality assurance verification review. This 14

FiGURr 2 UNITED ST AT.ES DUANEAIJtCII E2'W4CGYC=Zk'D -GAP RAPIDSNORTH.QUADRANGLE 1--NC DEPARTMENTOF T-HEINTERIOR 1..T SURVEY GEOLOGICAL

- ~ ,.~3*~~3~33 3~'l ~-T*..

7, j .' -7;,..

TWA.,&) 2 dBC 60

-60 dBICI 3333? 3? C???? 133 - - - C

33

-3) ~ -- Z-2 0 l 13333C10300A33

0? 5331 SCCA' M?' 13 333010033713?

3I~3I~ 313?? ..

.~. CEDARRAPIDS NORTH.IOWA 00C3.in,0C3?333I3S?~ .3W 033033 -

selection is representative of the site-specific topographical conditions around the more populated areas within the Duane Arnold Energy Center EPZ.

Surface weather parameters, representative of site prevailing summer daytime conditions, were used in the OSPM calculations. Appendix A of this'report contains OSPM topographical profile charts, OSPM topographical input, OSPM siren sound pressure level input, OSPM meteorological input, and OSPM siren sound pressure level output for each of the 11 individual siren runs.

To compare the ranging estimates of OSPM with the design procedure for each type of siren analyzed, the output dBC levels along each azimuth of the 11 sirens were classified into three terrain categories: flat terrain (generally unobstructed line-of-sight);

partially hilly terrain (very slightly obstructed line-of-sight); and hilly terrain (obstructed line-of-site). Regressions of dBC versus the logarithm of distance were performed for the sirens over these categories.

The OSPM regression results of the siren sound pressure levels are presented in Figures 3 through 8 of this report. Also depicted are the ranges of 60 dBC and 70 dBC as calculated by the licensee using the 10 dB loss per distance doubled attenuation rate with no barriers. The following table summarizes the estimated effective ranges of 70 dBC and 60 dBC over the various terrain classifications:

16

FIGURE COMP) 91 (D

81 0

(D En 71 . > 2,000 Persons/Sq MiJ (D

(D (D

H 111+/-

H r

_[t1170 dBC At 4,500 Ft IHIIt1II1~ IIIU imF 10 dB/Distance Doubled

,2 000 Persons/S 60 dBC At 9,000 Ft Mi Design Report Computation I I.

IIIl111 I(No Barriers)lIllilll Ii I II II 4

I I 30 100 200 500 1,000 2,000 5,000 8, f i- f- ni P r m C; rtr-n Tn Po' i-

FIGUR COMPARATIVE OSPM RESULTS, PARTIALLY HILLY TERRAIN (FS-1003 SIREN)

LI>

I,

.--dI .1 I

Ii' Lower 951 II 4-I (D

ilk O

IL.

I, (D

CA c '> 2,000 Persons/sq Mi lIII lllIllillIliiIlliilllflIlIllllltllIllIlI (D

.70 dBC At 4,500 Ft M ~ifli[N ik~lillill.Nil

!Wln It-ilf IUWWI t74 (D 10 dB/Dis-tance Doubled F1 61 r S 2, 000 Persons/Sq M II, I..

60 dBC At 9,000 Ft Desian Reoort Comoutat 1' I i I - - - t- - F- -- +---

7 -1 I .1.

30' 100 200 500 1 000 2,000 5,000 8,000 Dic onr' Prrn r '-,n Tn T'rvt

FIGUROW COMPARATIVE OSPM RESULTS, HILLY TERRAIN (FS-1003 SIREN) j.1-.KL..

71!

~1~

I, I.

Lower ~ 5%

~1 En I 4.

(D -4 I I Ell 0 4 I

.1 ii ti

-1 (D

I

> 2,000 Persons/Sq Mi-'

70 dBC at 4,500 Ft 10 dB/Distance Doubled (D III1 IIIl l 111111 l IIIIl iIIIIIIi I!

2,000 Persons/Sq II F'-

60 dBC At 9,000 Ft T*1~

Design Report Computation 11I llllllII No Barriers ) 111llil 1 J-!I

I

1 AL '4; 4

100 200 500 1,000 2 5,000 8,000 ni;-t -on-n Tronm q i rr'n Tn Fort

W FlGUREW W 100 COMPARATIVE OSPM RESULTS, RELATIVELY FLAT TERRAIN (ws-3000 SIREN) 96- 1 t~.j.

Lower 95%

En -----OSPM Reqreelative

.D 70 70ero Level For > 2,000 Persons/Sq NMi'7 7twJ0 dBC At 4,800 Ft - iiil 1 CD i III liii 10 dB/Distance Doubled liu 60 dBC Criterion Lvel For :5 2,000 m muimH iIIIiiI Persons/Sq.IIIIJ H ~~111160 dBC At 96

___1h___ I I i p 1jij:>

~K 7 1 Desi n Report Computation

~ ~~~(No Barrier)~I~f<

~~v 50 i 30 LL1 I 100 200 500 1,000 2,000 5,000 8,000 fli 'trin q~~c Fi ( rp ,1 n TTn J.(;'r$,

FIGURw COMPARATIVE OSPM RESULTS, PARTIALLY HILLY TERRAIN (WS-3000 SIREN) 9 2,000 Persons/S. Mi! i 70 dBC At 4,800 Ft II 10 dB/Distance Doubled

.1 MIL 4--.-

2,000 Persons/Sq. Mi

.1.

I160 dBC At 9,600 Ft Design Report Computation IIII11ll!II(No Barr ie rs II I

)Illlllill11ill 40 200 500 1,000 2,000 5,000 8,000 Distance From Siren In Feet

FIGUR COMPARATIVE OSPM RESULTS, HILLY TERRAIN ( -3000 SIREN)

I II 90 Lower 95% .11.

1illIji 1t

I.

cn H 80 bIn 0

70 2,000 Persons/Sq. Mi fiffiI 70 dBC At 4,80 Ft 10 dB/Distance Doubled IIill l IIIIIIIIII Hil l lg ill I ll 60 2,000 Persons/ q. M ii'1 1I IlldBC 1I1!II11llilll1l1111ll~ wlll1!ll

[J60 At 9,600 Ft Design Report Computat

1111(No ll Barriers) to .50 40 200 500 1,000 5,000 8, Distance From Siren In Feet

Range in Ft to Siren Type Procedure Terrain 70 dBC 60 dBC FS-1003 Licensee No Barriers 4,500 9,000 OSPM Flat 5,150 >10,000 Partially Hilly 4,375 8,600 Hilly 3,050 5,300 WS-3000 Licensee No Barriers 4,800 9,600 OSPM Flat 3,900 5,800 Partially Hilly 2,900 4,900 Hilly 2,625 4,350 Some general observations can be made concerning the siren range comparisons. The 60 dBC and 70 dBC ranges estimated by the licensee for the FS-1003 sirens over partially hilly and flat terrains are similar to OSPM results. With proper terrain adjust ments, the effective 70 and 60 dBC ranges would be greatly reduced as demonstrated above.

The licensee's estimated 60 dBC and 70 dBC ranges for the WS-3000 sirens, however, are very liberal com pared to OSPM results. This is due to the higher operating frequency of the WS-3000 siren which suffers much higher attenuation rates through atmospheric absorption and other excess attenu ations. The effective range of the WS-3000 siren is therefore substantially reduced from the 10 dBC rule which is based on operating frequencies of 500 to 800 Hz. This is particularly so for the 60 dBC range, since the attenuation rate in the 1,000 Hz octave band is typically much greater than 10 dB per distance doubling at large distances (5,000 ft. and beyond).

23

To assess the overall adequacy of the design on an area basis, for each siren located on the U.S.

Geological Survey's Cedar Rapids North quadrangle map (Figure 2 of this report), the area coverages of 60 dBC and 70 dBC were numerically integrated and averaged. The results are as follows:

AVERAGE AREA (In Square Miles)

Siren Type 70 dBC 60 dBC FS-1003 3.13 13.84 WS-3000 .86 3.83 Using these results, the following average effective radii are derived:

EFFECTIVE RADIUS (In Ft)

Siren Type 70 dBC 60 dBC FS-1003 5,273 11,085 WS-3000 2,771 5,832 These derived radii confirm that on the average, the Design Report siren ranges are liberal when site terrain and weather conditions are taken into account.

The results of the individual OSPM runs were combined to generate a comprehensive overview of the siren sound pressure levels in the Cedar Rapids North area as depicted in Figure 2 of this report. A surface interpolation and contouring program utilizing the output results of the 11 sirens was used to generate 24

the sound pressure level contours shown in Figure 2.

These contours account for site-specific topograph ical and meteorological effects of the sirens.

Comparisons of the OSPM-predicted 60 dBC and 70 dBC contours with the contours in Appendix C of the Design Report indicate that the coverage of the sirens as calculated in the Design Report is liberal.

The original Design Report states in Section 2.4.1 that there are some isolated areas of the EPZ which have siren coverage slightly less than 60 dBC that are indicated on the licensee's map. Those areas have been determined to be unpopulated (see Appendix I of the Design Report). The OSPM contour map confirms that not all of the originally designed EPZ is covered by at least 60 dBC. For example, a small area was identified between siren 14 and siren 24 that contains a group of houses which does not receive siren sound pressure levels of 60 dBC or greater.

The original Design Report map showed the Cedar Rapids area containing more than 2,000 persons per square mile; however, the licensee's 70 dBC contours did not fully cover this area. The OSPM results confirmed that Cedar Rapids was not covered by a minimum siren sound pressure level of 70 dBC (see Figure 2 of this report).

In conclusion, the Duane Arnold Energy Center siren alerting system was found to be conditionally acceptable. The.licensee had not fully demonstrated that the system met FEMA-REP-10 specific design requirements throughout the 10-mile EPZ. The 25

licensee was asked to (1) ascertain that all geographical areas below 60 dBC coverage are either unpopulated or are exposed to actual siren sound pressure levels of greater than 60 dBC and (2) ascertain that the Cedar Rapids area containing more than 2,000 persons per square mile is fully covered by a minimum siren sound pressure level of 70 dBC, or (3) provide another primary alerting mechanism in those areas.

In response to the conditional approval, the licensee submitted a revised original Design Report proposing the use of 23 municipal civil defense sirens and 86 utility electronic sirens with public address capability. Also, the original design report was modified to include a revised EPZ (adding all of the Cedar Rapids and the Marion metropolitan areas). The revised installed siren warning system was analyzed and found to provide more complete and more uniform siren coverage throughout the modified EPZ. Appendix C of the revised Design Report identified some isolated areas within the EPZ with siren coverage slightly less than 60 dB(C). These areas were certified, in Appendix I of the revised Design Report, as being unpopulated.

In conclusion, the Duane Arnold Energy Center siren alerting system is found to meet the specific design requirements of FEMA-REP-10.

2. Special Alerting (E.6.2.4., FEMA-REP-10)

Alerting of the public in Linn County by the Duane Arnold Energy Center fixed siren system is supplemented by the Linn Co4nty Municipal Civil Defense Warning System as well as municipal fire 26

department siren systems. The Linn County Civil Defense Director authorizes the activation of these siren systems and instructs the County Communications Dispatcher to coordinate activation with the Cedar Rapids, Marion, and Hiawatha fire dispatchers.

An educational package developed by Iowa Electric Light and Power Company, IDSD, Linn County Civil Defense, and the Benton County Office of Emergency Management has been printed in the area telephone book and in a brochure. The brochure is mailed annually to each EPZ resident and is distributed by park rangers when registering in any of the state and county recreational areas in the EPZ, and is also placed in each area hotel/motel room, filling stations, public libraries, and local government offices.

3. Institutional Alerting (E.6.2.4.2, FEMA-REP-10)

Both Linn and Benton Counties utilize their individual county Indoor Warning System consisting of FM radio receivers located in all public, private, and parochial schools, nursing homes, hospitals, and local emergency management agencies. These radio receivers are activated by encoders at the county EOCs.

27

III. FINDINGS FOR EVALUATION CRITERION N.1 On Wednesday, April 13, 1988 at 9:15 a.m. Central Daylight Time (CDT), the physical means (sirens) used to alert the population within the Duane Arnold Energy Center EPZ were demonstrated to satisfy the alert and notification aspects of 44 CFR 350.9(a).

This demonstration was conducted by using the methods specified in Section N.1.(a,b).2 of the FEMA-REP-10.

The results indicate that this.portion of the alert and.notification system evaluation conforms to FEMA-REP-10 and NUREG-0654/FEMA-REP-1, Rev. 1.

The April 13, 1988, demonstration of the Duane Arnold Energy Center alerting system consisted of a double activation of all sirens and a subsequent telephone survey to estimate the proportion of EPZ households actually alerted. The first siren activation was initiated at approximately 9:15 a.m. CDT and contin ued for three minutes. The sirens were activated a second time beginning at approximately 9:21 a.m. CDT and continued for approximately three minutes. All sirens were reported to have operated properly during all activations.

The telephone survey of EPZ residences began at approximately 9:23 a.m. and was completed within 72 minutes. This survey was conducted by 39 telephone interviewers, each with a separate WATS line and computer terminal.

The universe of households to be surveyed was deter mined by establishing a 15-mile-radius circle around the latitude and longitude of the plant. All house holds known to be outside the EPZ boundary (an irreg ular 10-mile-radius with the plant at the center 28

point) were eliminated from the sample. The sample incorporated a sorted master list of approximately 2,500 households (addresses and telephone numbers) believed to be within the established boundary.

A sufficient number of replicated subsamples were developed from the overall sample to ensure that the required number of telephone calls would be made, i.e., to establish the proportion of households alerted to within a 5% precision at 95% confidence level. Appendix B of this report describes the method used for sizing the sample to achieve this result.

The questionnaire used for the telephone survey is included as Figure 9 of this report.

As part of the telephone survey, a total of 275 households believed to be within the Duane Arnold Energy Center EPZ were contacted, and the responses were collected in an automated data base. Of this group, 56 respondents stated that they were not alerted. However, before running the final tabulations, addresses of all households interviewed were checked on a street map to validate their locations. Of the 275 addresses, 2 were found to lie outside the EPZ. Therefore, data were tabulated on the 273 respondent households that were located within the EPZ. Respondents at 10 of these households had been away from home at the time of the alerting system demonstration and, therefore, were also not included in the alerting analysis. Of the remaining 263 households, 79.8% (210) indicated that they had been alerted during the demonstration.

Using the estimated number of households within the 29

C- *£.~

3940, FIGURE 9 Icno, ens vaia O -4:3067-01C-3 E 7.NSu DUAE APNCLD AM.

interview _

AM --------- _PM ime Began ip Code -- _

4ime Ended --------

Sample :ype ----

RLCORD EEFC :ALNG -Telephone e Coe) allinghouseholds cr'.g sac

. e're 'e Ne ea~l ~

ello, =y nsaeb is Helyname iserveS a a -suvey. 7,is survey is sponsorecy :e United States Government.

Feral Chlogency Snagement Agency (FEMA) of the Your answers are ay end will be kept strict.y con.ienl.

.~First ofall 2,-s this (~A D7*D Yes

.ND DI.. AG IN No

E?.MINE

. - ou c arin/ale no:: i ci test o the yubhic wa me4er5 ofts

2. A you may or may not know, there was a D i s you s: ay ?t s ary Center.

system C: the Duane A-o1d a n z=o= :his test househ, hear the siren/Warnifng signal S TO Q. 4 Yes Sp-TO Q. A No hear!: :o c ONIN 1- j another source SHOUS-HOLD D ES ::R: SmORE KNOV-ZLEDGABL

FIGURE 9 (CONT.)

A sr.en Neighboro m Othier ZamlyV menber told. ne 535 on radi.o Q. 4 EBES on television i Other (sPEuC:Y _____

Don': Know

...... D~A you hear . . . (F.~~D us:. c:RCI ~..z ::-~:

A Si en r:o: a Neighr

rom Anothe: :an.2.v YMezbr Mr:' ear-.s cz soj=:"n -~ se; (FY) ________ __

5on rad. io DO O R EA D Soeevision Don' ow

4. (F" " E eLMRGNCY o atoL aay home Q. 4 SIGNAL" ASKame4 Q.om 1D;O:ERVSE hnOW;SKI?:0 .4AA)

Were you at home or away from h.ome when. you heard the sir=en si gml?

FIGURE 9 (CONT.)

4A. kC:? '*n::!D N:? :ZF KAR M.RCZN:Y .

'ere vou at home around 9:15 t:.s orning?

Yes No Don': Know: Y

. An:orma:ion about what to do in the event of a "real" emergency at the Duane Arnold Energy Center is printed inside your Phone Book. Were you aware of this?

Yes Beause we need to deternine whether or nct you live vithin the Emergency' Plann.ing

-one of the Duane knol4 7nergy Center, would you please -ive me this address?

(?AUST FOR ANSIZ?)

and ue neares:. inersection (c= cross street) to this house.

.lso, what com-mnitv is this?

Cm behslf of Chiltom Researh Se=vices and the edel egeny Manages'en: AgenyV, would li*ke to thank you for your time and for giving us this valuableI ncation.

I

EPZ (45,763 from reference 2) in the confidence interval that ranges from 75.4% to 84.9% is yielded for the proportion of the total EPZ population alerted. In other words, at the 95% confidence level, between 75.4% and 84.9% of the households within the.Duane Arnold Energy Center EPZ would have stated that they were alerted by the siren system.

The sample of 273 households was also used to estimate the proportion of households within the EPZ that would have stated they received information about what to do in a real emergency at the Duane Arnold Energy Center. Of these 273 households, 57.1%

(156) responded that they had received the information and 42.9% (117) responded that they had not received the information. Using the approach discussed previously, the following estimates for the entire EPZ population resulted (at the 95% confidence interval):

Between 51.2% and 62.9% of the households would have reported receiving the information; Between 37.1% and 48.8% of the households would have responded that they had not received the information; and In conclusion, no areas of the Duane Arnold Energy Center siren system were identified as needing enhancements.

33

IV. FINDINGS FOR EVALUATION CRITERIA E.5, F.1, N.2, N.3, AND N.5 Those aspects of the alert and notification system addressing evaluation criteria E.5, F.1, N.2, N.3, and N.5 of NUREG-0654/FEMA-REP-1, Rev. 1, have been reviewed by FEMA and the results are documented in FEMA's "Exer cise Evaluation of the Implementation of State and Local Radiological Emergency Response Plans Conducted November 18, 1986 and the Remedial Exercise Conducted January 22, 1987 for the Duane Arnold Energy Center," dated February 11, 19877 and the "Exercise Evaluation of the Implementation of State and Local Radiological Emergency Response Plans Conducted November 9, 1988 and the Remedial Exercise Conducted December 1, 1988 for the Duane Arnold Energy Center," dated January 9, 198914 34

.REFERENCE LIST

1. Iowa Electric Light and Power Company. 1986. "Duane Arnold Energy Center updated final safety analysis report." Revision 4. June 1986.

2. U.S. Department of Commerce, Bureau of the Census. 1983.

1980 census of population. Volume 1, Chapter A, Part 1, "United States summary." PC80-1-Al. April 1983.

3. Iowa Electric Light and Power Company. 1986. Letter from David L. Wilson, Manager, Nuclear Licensing and Emergency Planning, to Mr. Robert S. Wilkerson, Chief, Field Oper ations Branch, Technological Hazards Division, Federal Emergency Management Agency, dated October 21, 1986, enclosing one copy of "An offsite emergency -plan prompt alert and notification system addendum for the Duane Arnold Energy Center." October 1986.

4. State of Iowa. 1984. "Iowa radiological emergency re sponse plan, Section B, nuclear power plant accident/

incident (part IV of Iowa emergency plan)." Revision 6.

September 1987.

5. Benton County. "Benton County radiological emergency re sponse plan." Revision I. September 15, 1988.

6. Linn County. "Linn County radiological emergency response plan." Revision. September 15, 1988.

7. Federal Emergency Management Agency. 1987. "Exercise eval uation of the implementation of state and local radiolog ical emergency response plans conducted November 18, 1986 and the remedial exercise conducted January 22, 1987 for the Duane Arnold Energy Center." February 11, 1987.

8. Nuclear Regulatory Commission and Federal Emergency Management Agency. 1980. "Criteria for preparation and evaluation of radiological emergency response plans and preparedness in support of nuclear power plants."

NUREG-0654/FEMA-REP-1. Revision 1. November 1980.

9. Federal Emergency Management Agency. 1985. "Guide for the evaluation of alert and notification systems for nuclear power plants." FEMA-REP-10. -November 1985.

10. International Energy Associates Limited. 1983. "Analysis of siren system pilot test." IEAL-333. November 2, 1983.

35

11. Federal Emergency Management Agency. 1980. "Outdoor warning systems guide." CPG 1-17. March 1, 1980.

12. Iowa Electric Light and Power Company. 1987. Letter from Stephen L. Swails, Manager, Nuclear Licensing and Emergency Planning, to Craig Wingo, Chief, Field Operations Branch, Natural and Technological Hazards Program, Federal Emergency Management Agency, dated December 16, 1987, enclosing one copy of "An offsite emergency plan prompt alert and notification system addendum for the Duane Arnold Energy Center, Revision 1." December 1987.

13. Iowa Electric Light and Power Company. 1989. An "off-site emergency plan prompt alert and notification system addendum for the Duane Arnold Energy Center, revision 3."

July 1989.

14. Federal Emergency Management Agency. 1989. "Exercise evaluation of the implementation of state and local radiological emergency response plans conducted November 9, 1988 and the remedial exercise conducted December 1, 1988 for the Duane Arnold Energy Center." January 9, 1989.

36

APPENDIX A OSPM Topographical Profile Charts OSPM Topographical Input Data OSPM Siren Sound Pressure Level Input Data OSPM Meteorological Input Data OSPM Siren Sound Pressure Level Output Data

0 DUANE ARNOLD 13 AZIMUTH, E 1

0.98 0.96 0.94 0.92 0.9 Zc 0.86 0.84 0.82 0.8 0.78 0.76 0 2 4 6 8 10 12 (Thousands)

DISTANGE, FT

DUANE ARNOLD 13 AZIMUTH, ENE 1

0.98 0.96 0.94 0.92 Z c 0.88 0.86 0.84 0.82 0.8 0.78 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 13 AZIMUTH, NE 0.98 0.96 0.94 0.92 0.9

--a z0.88 Zc 0.85 0.5 0.84 0.82 0.8 0.78 0.76 0.74 4 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 13 AZIMUTH, NNE 1

0.99 0.98 0.97 Q.96 0.95 0.94 0.93 0.92 0.91 O2 0.9

> 0.89 0.88 0.87 0.86 0.85 0.84 0.83 0.82 0.81 0.8 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 13 AZIMiH, N 990 980 970 960 950 940 930 920 L 910 I 900 0 890 880 bJ 870 860 850 840 830 820 810 800 790 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 13 AZIMUTH, NNW 1

0.98 0.96 0.94 0.92 0.9

-1T, Zc 0.88 0 0.86 Id 0.84 0.82 0.8 0.78 0.78 0.76 0.74 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARPLD 13 AZIMUTH, NW 1

0.98 0.96 0.94 0.92 0.9 0.88 301 0.86 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 13 AZI MUTH, WNW 1

0.98 0.96 0.94 0.92 0.9 0.88 Z

zc 0.86 02 m :

0.84 0.82

.0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 a 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 13 AZIMUTH, W 1

0.98 0.96 0.94 0.92 0.88 Z c086 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 . 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 13 AZIMUTH, WSW 1

0.98 0.96 0.94 0.92 0.9 0.88 0c 0.86

'0 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT I

DUANE ARIELD 13 AZI MUH, SW 1

0.98 0.96 0.94 0.92 0.9 0.88 IL 0.86

>0 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 13 AZIMUTH, SSW 1

0.98 0.96 0.94 0.92 0.9 0.88 OR.

> 0 0.86 " N 0.84 0.82 0.8 0.78 0.76 0.74 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 13 AZIMUTH, S 1

0.98 0.94 0.92 0.9 zc

>0 S 0.86 0.84 0.82 0.8 0.78 0.76 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 13 AZIMUTH, SSE 1

0.98 0.96 0.94 0.92

-. 9 Z c 0.88

>0 0.86 0.84 0.82 0.8 0.78 0.74 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 13 AZIMUTH, SE 1

0.98 0.96 0.94 0.92 0.9 T: 0.88 (A

0.86 OV 3t 0.84 0.82 0.8 0.78 I

0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 13 AZIMUTH, ESE 1

0.98 0.96 0.94 6.92 0.82 zc 0.86 0.84 0.82 0.8 0.8 0.78 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #13-WS2000 SOURCE-RECEIVER TOPOGRAPHICAL INPUTS ALL BEARINGS ARE WITH RESPECT TO THE NORTH MEASURING CLOCKWISE GRID GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTION 1 500. 90.00 930.00 SOFT 0. NO 0. 0.

2 1000. 90.00 905.00 SOFT 0. NO 0. 0.

3 2000. 90.00 885.00 SOFT 0. NO 0. 0.

4 4000. 90.00 825.00 SOFT 0. NO 0. 0.

5 6000. 90.00 810.00 SOFT 0. NO 0. 0.

6 8000. 90.00 775.00 SOFT 0. NO 0. 0.

7 12000. 90.00 795.00 SOFT 0. NO 0. 0.

500. 67.50 920.00 SOFT 0. NO 0. 0.

1000. 67.50 905.00 SOFT 0. NO 0. 0.

2000. 67.50 870.00 SOFT 0. NO 0. 0.

11 4000. 67.50 820.00 SOFT 0. YES 3500. 850.

12 6000. 67.50 860.00 SOFT 0. YES 5800. 880.

13 8000. 67.50 790.00 SOFT 0. YES 5800. 880.

14 12000. 67.50 790.00 SOFT 0. NO 0. 0.

15 500. 45.00 920.00 SOFT 0. NO 0. 0.

16 1000. 45.00 890.00 SOFT 0. No 0. 0.

17 2000. 45.00 870.00 SOFT 0. NO 0. 0.

18 4000. 45.00 880.00 SOFT 0. NO 0. 0.

19 6000. 45.00 850.00 SOFT 0. NO. 0. 0.

20 8000. 45.00 810.00 SOFT 0. NO 0. 0.

21 12000. 45.00 840.00 SOFT 0. NO 0. .0.

22 500. 22.50 925.00 SOFT 0. No 0. 0.

23 1000. 22.50 875.00 SOFT 0. NO 0. 0.

24 2000. 22.50 855.00 SOFT 0. NO 0. 0.

25 4000. 22.50 870.00 SOFT 0. No 0. 0.

26 6000. 22.50 850.00 SOFT 0. NO 0. 0.

27 8000. 22.50 825.00 SOFT 0. NO 0. 0.

28 12000. 22.50 830.00 SOFT 0. YES 11500. 850.

29 500. .00 920.00 SOFT 0. No 0. 0.

30 1000. .00 880.00 SOFT 0. NO 0. 0.

31 2000. .00 860.00 SOFT 0. NO 0. 0.

32 4000. .00 820.00 SOFT 0. NO 0. 0.

33 6000. .00 845.00 SOFT 0. NO 0. 0.

34 8000. .00 820.00 SOFT 0. NO 0. 0.

35 12000. .00 795.00 SOFT 0. YES 9900. 845.

500. 337.50 920.00 SOFT 0. NO 0. 0.

GRID GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTION 37 1000. 337.50 920.00 SOFT 0. NO 0. 0.

38 2000. 337.50 870.00 SOFT 0. NO 0. 0.

39 4000. 337.50 810.00 SOFT 0. No 0. 0.

40 6000. 337.50 830.00 SOFT 0. NO 0. 0o 41 8000. 337.50 785.00 SOFT 0. NO 0. 0.

42 12000. 337.50 785.00 SOFT 0. NO 0. 0.

43 500. 315.00 930.00 SOFT 0. NO 0. 0.

44 1000. 315.00 920.00 SOFT 0. NO 0. 0.

45 2000. 315.00 920.00 SOFT 0. NO 0. 0.

46 4000. 315.00 840.00 SOFT 0. YES 1500. 940.

47 6000. 315.00 765.00 SOFT 0. YES 1500. 940.

48 8000. 315.00 740.00 SOFT 0. No 0. 0.

49 12000. 315.00 740.00 SOFT 0. NO 0. 0 50 500. 292.50 930.00 SOFT 0. NO 0.

51 1000. 292.50 920.00 SOFT 0. NO 0.

52 2000. 292.50 920.00 SOFT 0. NO 0. 0.

53 4000. 292.50 850.00 SOFT 0. NO 0. 0.

54 6000. 292.50 740.00 SOFT 0. YES 2000. 920.

55 8000. 292.50 740.00 SOFT 0. YES 4000. 850.

56 12000. 292.50 810.00 SOFT 0. YES 11000, 850.

57 500. 270.00 930.00 SOFT 0. No 0. 0.

58 1000. 270.00 890.00 SOFT 0. NO 0. 0.

59 2000. 270.00 900.00 SOFT 0. NO 0. 0.

60 4000. 270.00 800.00 SOFT 0. YES 1500. 920.

61 6000. 270.00 740.00 SOFT 0. NO 0. 0.

62 8000. 270.00 750.00 SOFT 0. NO 0. 0.

63 12000. 270.00 785.00 SOFT 0. NO 0. 0.

64 500. 247.50 920.00 SOFT 0. No 0. 0.

65 1000. 247.50 860.00 SOFT 0. No 0. 0.

66 2000. 247.50 885.00 SOFT 0. No 0. 0.

67 4000. 247.50 880.00 SOFT 0. NO 0. 0.

68 6000. 247.50 790.00 SOFT 0. YES 4000. 880.

69 8000. 247.50 740.00 SOFT 0. YES 4000. 880.

70 12000. 247.50 740.00 SOFT 0. NO 0. 0.

71 500. 225.00 890.00 SOFT 0. NO 0. 0.

72 1000. 225.00 910.00 SOFT 0. NO 0. 0.

GR+D GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTION 73 2000. 225.00 840.00 SOFT 0. NO 0. 0.

74 4000. 225.00 880.00 SOFT 0. No 0. 10.

75 6000. 225.00 850.00 SOFT 0. YES 4700. 890.

76 8000. 225.00 780.00 SOFT 0. YES 4100. 890.

77 12000. 225.00 740.00 SOFT 0. YES 4100. 890.

78 500. 202.50 910.00 SOFT 0. NO 0. 0.

79 1000. 202.50 910.00 SOFT 0. NO 0. - 0.

80 2000. 202.50 870.00 SOFT 0. NO 0. 0.

81 4000. 202.50 850.00 SOFT 0. YES 3800. 890.

82 6000. 202.50 810.00 SOFT 0. NO 0. 0.

83 8000. 202.50 785.00 SOFT 0. YES 6600. 850.

84 12000. 202.50 740.00 SOFT 0. YES 6600. 850.

85 500. 180.00 930.00 SOFT 0. NO 0. 0, 1000. 180.00 900.00 SOFT 0. NO 0. 0.

2000. 180.00 900.00 SOFT 0. NO 0. 0.

4000. 180.00 930.00 SOFT 0. NO 0. 0.

89 6000. 180.00 870.00 SOFT 0. YES 3500. 910.

90 8000. 180.00 860.00 SOFT 0. YES 3500. 910.

91 12000. 180.00 765.00 SOFT 0. YES 3500. 910.

92 500. 157.50 930.00 SOFT 0. NO 0. 0.

93 1000. 157.50 930.00 SOFT 0. NO 0. 0.

94 2000. 157.50 860.00 SOFT 0. YES 500. 930.

95 4000. 157.50 870.00 SOFT 0. YES 3100. 900.

96 6000. 157.50 800.00 SOFT 0. YES 3100. 90.

97 8000. 157.50 820.00 SOFT 0. NO 0. .

98 12000. 157.50 750.00 SOFT 0. YES 12000. 90.

99 500. .135.00 935.00 SOFT 0. NO 0. .

100 1000. 135.00 910.00 SOFT 0. NO 0. .

101 2000. 135.00 920.00 SOFT 0. No 0. .

102 4000. 135.00 915.00 SOFT 0. NO 0. 0.

103 6000. 135.00 850.00 SOFT 0. YES 5900. 90.

104 8000. 135.00 805.00 SOFT 0. YES 5900. 960.

105 12000. 135.00 805.00 SOFT 0. YES 5900. 960.

106 500. 112.50 930.00 SOFT 0. NO 0. 0.

107 1000. 112.50 925.00 SOFT 0. No 0. .

108 2000. 112.50 940.00 SOFT 0. NO - 0. .

109 4000. 112.50 905.00 SOFT 0. NO 0. .

110 6000. 112.50 800.00 SOFT 0. YES 1200. 940.

111 8000. 112.50 800.00 SOFT 0. YES 4100. 910.

112 12000. 112.50 840.00 SOFT 0. NO 0. 0.

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #13-WS2000 NOISE SOURCE POWER LEVEL INPUT INDEX SOURCE DBA DBC 31.5 63 125 250 500 1000 2000 4000 8000 (NZ) 1 DUANE - WS2000 152.9 152.6 .0 .0 .0 * .0 .0 152.0 143.0 138.0 126.0 x0u .00 YOU .00 zO 990.00 HEIGHT ABOVE GROUND= 55.00 IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #13-US2000 METEOROLOGICAL INPUT CONDITIONS N1= 10.67 METERS H2= 50.29 METERS WIND WIND SPEED(MPS) TEMPERATURE(C) RELATIVE BAROMETRIC YEAR SEASON MONTH DATE HOUR DIRECTION Hi H2 "1 H2 HUMIDITY PRESSURE(MM OF HG) 8 21 12 177.0 2.1 2.6 23.9 23.2 30.0 742.0

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #13-WS2000 SOUND PRESSURE LEVELS IN DBC UNDER MET CONDITION 1 DISTANCE IN FEET AZIMUTH 500. 1000. 2000. 4000. 6000. 8000. 12000.

E 99.3 85.1 67.5 52.5 47.6 44.3 35.8 ENE 99.3 85.1 67.4 45.9 36.0 34.4 35.8 NE 99.3 85.1 67.4 52.5 46.7 41.0 27.5 NNE 99.3 85.0 67.4 52.5 47.6 44.3 27.8 N 99.3 85.0 67.4 52.5 47.6 44.3 29.5 NNW 99.3 85.1 67.4 52.5 47.6 44.3 35.8 NW 99.3 85.1 67.5 47.2 42.3 44.3 35.8 WNW 99.3 85.1 67.5 52.5 41.3 38.3 26.3 W 99.3 85.1 67.5 47.7 47.5 44.3 35.8 WSW 99.3 85.0 67.5 52.5 38.8 35.3 28.0 SW 99.2 85.1 67.4 52.5 41.7 39.2 30.1 SSW 99.2 85.1 67.4 35.3 47.6 34.6 31.0 S 99.3 85.1 67.5 52.5 42.0 37.0 30.1 SSE 99.3 85.1 54.2 47.6 42.3 44.2 7.3 SE 99.3 85.1 67.5 52.5 21.7 22.7 16.1 ESE 99.3 85.1 67.5 52.5 41.2 37.9 35.8

DUANE ARNOLD 14 AZIMUTH, E 900.

890 880 8.70 860 850 840 z 830 0

F: 820 O 810 800 790 780 770 760 750 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 14 AZIMUTH, ENE 920 910 900 890 880 870 860 L

850 2

0 840 830 LU 820 810 800 790 780 770 760 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 14 AZIMUTH, NE 920 910 900 890 880 870 860 850 0

840 830 w

Zi 820 810 800 790 780 770 760 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 14 AZIMUTH, NNE 900 890 880 870 860 850 840 O 830 0

820 F:

810 800 790 780 770 760 750 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 14 AZIMLTH, N 900 890 880 870 860 850 840 830 L 820 i 810 0

r 800

.4 790 H

Iii 780 770 760 750 740 730 720 74 0 700 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 14 AZIMUTH, NNW 920 910 900 890 880 870 860 850 840 0

830 a20 Id 810 800 790 780 770 760 750 740 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 14 AZIMUTH, NW 900 890 880 870 860 850 840 830 i 820 810 0

800 790 Id 780 770 760 750 740 730 720 710 700 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 14 AZI MUTH, WNW 870 .

860 850 840 830 820 810 0 800 H 790 780 770 760 750 740 730 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FF

DUANE ARNOLD 14 AZIMUTH, W 900 890 880 870 860 850 840 830 L 820 i 810 0

800 790 780 770 760 750 740 730 720 710 700 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNDLD 14 AZIMUTH, WSW 900 890 880 870 860 850 840 830 820 810 0

>r 800 790 H 780 770 760 750 740 730 720 710 700 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 14 AZI MUTH, SW 880 870 860 850 840 830 820 L

810 0

800 790 Lii 780 770 760 750 740 730 720 0 2 4 6 8' 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 14 AZIMUTH, SSW 900 890 880 870 860 850.

840 830 L 820

/ 810 I

0 800 790 Id 780 770 760 750 740 730 720 710 700 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 14 AZIMUTH, S 870 860, 850 840 830 Z 820 01 800 790-780 770 760 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNILD 14 AZIMUTH, SSE 900 890 880 870 860 850 840 830 820 w 810 800 790 780 770 760 750 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 14 AZIMUTH, SE 900 890 880 870 860 840 830 820 810 800 0 2 4 6 8 10 12 (Thousands)

DISTANGE, FT

DUANE ARNOLD 14 AZIMUTH, ESE 900 890 880 870 860 850 840 i 830 0

r 820 Id 810 800 790 780 770 760 750 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #14-WS3000 SOURCE-RECEIVER TOPOGRAPHICAL INPUTS ALL BEARINGS ARE WITH RESPECT TO NORTH MEASURING CLOCKWISE GRID GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTION 1 500. 90.00 800.00 SOFT 0. No 0. 0.

2 1000. 90.00 790.00 SOFT 0. NO 0. 0.

3 2000. 90.00 790.00 SOFT 0. NO 0. 0.

4 4000. 90.00 800.00 SOFT 0. NO 0. 0.

5 6000. 90.00 812.00 SOFT 0. NO 0. 0.

6 8000. 90.00 855.00 SOFT 0. NO 0. 0.

7 12000. 90.00 865.00 SOFT 0. NO 0. O 8 500. 67.50 800.00 SOFT 0, NO 0.

9 1000. 67.50 788.00 SOFT 0. NO 0.

10 2000. 67.50 784.00 SOFT 0. NO 0. 0.

11 4000. 67.50 792.00 SOFT 0. NO 0. 0.

12 6000. 67.50 812.00 SOFT 0. NO 0. 0.

13 8000. 67.50 840.00 SOFT 0. NO 0. 0.

14 12000. 67.50 900.00 SOFT 0. NO 0. 0.

15 500. 45.00 802.00 SOFT 0. NO 0. 0.

16 1000. 45.00 790.00 SOFT 0. NO 0. 0.

17 2000. 4S.00 790.00 SOFT 0. NO 0. 0.

18 4000. 45.00 770.00 SOFT 0. NO 0. 0.

19 6000. 45.00 805.00 SOFT 0. NO 0. 0.

20 8000. 45.00 805.00 SOFT 0. YES 6600. 820.

21 12000. 45.00 910.00 SOFT 0. NO 0. 0.

22 500. 22.50 805.00 SOFT 0. NO 0. 0.

23 1000. 22.50 805.00 SOFT 0. MO 0. 0.

24 2000. 22.50 800.00 SOFT 0. NO 0. 0.

25 4000. 22.50 770.00 SOFT 0. YES 2800. 800.

26 6000. 22.50 795.00 SOFT 0. NO 0. 0.

27 8000. 22.50 795.00 SOFT 0. NO 0. 0.

28 12000. 22.50 870.00 SOFT 0. YES 10400. 890.

29 500. .00 810.00 SOFT 0. NO 0. 0.

30 1000. .00 810.00 SOFT 0. NO 0. 0.

31 2000. .00 805.00 SOFT 0. NO 0. 0.

32 4000. .00 795.00 SOFT 0. NO 0. 0.

33 6000. .00 750.00 SOFT 0. NO 0. 0.

34 8000. .00 805.00 SOFT 0. NO 0. 0.

35 12000. .00 830.00 SOFT 0. YES 10900. 870.

36 500. 337.50 810.00 SOFT 0. No 0. 1

GRID GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTION 37 1000. 337.50 805.00 SOFT 0. NO 0. 0.

38 2000. 337.50 810.00 SOFT 0. NO 0. 0.

39 4000. 337.50 790.00 SOFT 0. NO 0. 0.

40 6000. 337.50 775.00 SOFT 0. NO 0. 0.

41 8000. 337.50 830.00 SOFT 0. No 0. 0.

42 12000. 337.50 900.00 SOFT 0. YES 10700. 920.

43 500. 315.00 810.00 SOFT 0. NO 0. 0.

44 1000. 315.00 800.00 SOFT 0. No 0. 0.

45 2000. 315.00 805.00 SOFT 0. No 0. 0.

46 4000. 315.00 785.00 SOFT 0. NO 0. 0.

47 6000. 315.00 760.00 SOFT 0. NO 0. 0.

48 8000. 315.00 775.00 SOFT 0. NO 0. 0.

12000. 315.00 780.00 SOFT 0. YES 10300. 830.

500. 292.50 810.00 SOFT 0. NO 0. 0.

1000. 292.50 805.00 SOFT 0. No 0. 0.

52 2000. 292.50 785.00 SOFT 0. NO 0. 0.

53 4000. 292.50 770.00 SOFT 0. NO 0. 0.

54 6000. 292.50 745.00 SOFT 0. NO 0. 0.

55 8000. 292.50 755.00 SOFT 0. NO 0. 0.

56 12000. 292.50 735.00 SOFT 0. YES 9300. 790.

57 500. 270.00 810.00 SOFT 0. NO 0. 0.

58 1000. 270.00 795.00 SOFT 0. NO 0. - 0.

59 2000. 270.00 790.00 SOFT 0. NO 0. 0.

60 4000. 270.00 790.00 SOFT 0. NO 0. 0.

61 6000. 270.00 750.00 SOFT 0. YES 4000. 790.

62 8000. 270.00 735.00 SOFT 0. NO 0. 0.

63 12000. 270.00 740.00 SOFT 0. No 0. 0.

64 500. 247.50 810.00 SOFT 0. NO 0. 0.

65 1000. 247.50 790.00 SOFT 0. NO 0. 0.

66 2000. 247.50 810.00 SOFT 0. NO 0. 0.

67 4000. 247.50 775.00 SOFT 0. NO 0. 0.

68 6000. 247.50 770.00 SOFT 0. NO 0. 0.

69 8000. 247.50 725.00 SOFT 0. YES 6000. 770.

70 12000. 247.50 730.00 SOFT 0. NO 0. 0.

71 500. 225.00 810.00 SOFT 0. MO 0. 0.

72 1000. 225.00 795.00 SOFT 0. NO 0. 0.

I

GRID GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTION 73 2000. 225.00 800.00 SOFT 0. No 0. 0.

74 4000. 225.00 785.00 SOFT 0. NO 0. 0.

75 6000. 225.00 810.00 SOFT 0. NO 0. 0.

76 8000. 225.00 802.00 SOFT 0. NO 0. 0.

77 12000. 225.00 730.00 SOFT 0. YES 5600. 820.

78 500. 202.50 810.00 SOFT 0. NO 0. 0.

79 1000. 202.50 800.00 SOFT 0. NO 0. 0.

80 2000. 202.50 800.00 SOFT 0. NO 0. 0.

81 4000. 202.50 800.00 SOFT 0. NO 0. 0.

82 6000. 202.50 820.00 SOFT 0. YES 5500. 830.

83 8000. 202.50 820.00 SOFT 0. YES 7850. 840.

84 12000. 202.50 730.00 SOFT 0. YES 7850. 840.

85 500. 180.00 812.00 SOFT 0. NO 0.

86 1000. 180.00 810.00 SOFT 0. NO 0.

87 2000. 180.00 820.00 SOFT 0. NO 0.

88 4000. 180.00 818.00 SOFT 0. No 0. 0.

89 6000. 180.00 845.00 SOFT 0. No 0. 0.

90 8000. 180.00 850.00 SOFT 0. No 0. 0.

91 12000. 180.00 765.00 SOFT 0. YES 8000. 850.

92 500. 157.50 815.00 SOFT 0. NO 0. 0.

93 1000. 157.50 815.00 SOFT 0. NO 0. 0.

94 2000. 157.50 825.00 SOFT 0. NO 0. 0.

95 4000. 157.50 830.00 SOFT 0. NO 0. 0.

96 6000. 157.50 820.00 SOFT 0. NO 0. 0.

97 8000. - 157.50 798.00 SOFT 0. YES 4300. 830.

98 12000. 157.50 830.00 SOFT 0. NO 0. 0.

99 500. 135.00 812.00 SOFT 0. NO 0. 0.

100 1000. 135.00 815.00 SOFT 0. NO 0. 0.

101 2000. 135.00 810.00 SOFT 0. NO 0. 0.

102 4000. 135.00 813.00 SOFT 0. No 0. 0.

103 6000. 135.00 830.00 SOFT 0. NO 0. 0.

104 8000. 135.00 830.00 SOFT 0. YES 7000. 840.

105 12000. 135.00 850.00 SOFT 0. NO 0. 0.

106 500. 112.50 810.00 SOFT 0. NO 0. 0.

107 1000. 112.50 800.00 SOFT 0. NO 0. 0.

108 2000. 112.50 798.00 SOFT 0. NO 0. 0.

109 4000. 112.50 798.00 SOFT 0. NO 0. . 0.

110 6000. 112.50 815.00 SOFT 0. NO 0. 0.

111 8000. 112.50 835.00 SOFT 0. NO 0. 0.

112 12000. 112.50 850.00 SOFT 0. NO 0. 0.

I

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #14-WS3000 NOISE SOURCE POWER LEVEL INPUT INDEX SOURCE DBA DBC 31.5 63 125 250 500 1000 2000 4000 8000 (KZ) 1 DUANE - WS3000 158.1 158.0 .0 .0 .0 .0 147.0 157.0 149.0 141.0 124.0 XO= .00 YO= .00 ZO= 864.00 HEIGHT ABOVE GROUND= 52.00 IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #14-WS3000 METEOROLOGICAL INPUT CONDITIONS HT 10.67 METERS H2= 50.29 METERS WIND WIND SPEED(MPS) TEMPERATURE(C) RELATIVE BAROMETRIC YEAR SEASON MONTH DATE HOUR DIRECTION Hi H2 Hi H2 HUMIDITY PRESSURE(MM OF HG) 1981 8 21 12 177.0 2.1 2.6 23.9 23.2 30.0 742.0

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #14-US3000 SOUND PRESSURE LEVELS IN DBC UNDER MET CONDITION 1 DISTANCE IN FEET AZIMUTH 500. 1000. 2000. 4000. 6000. 8000. 12000.

E 104.7 90.6 75.6 65.7 61.3 57.8 51.3 ENE 104.7 90.6 75.6 65.7 61.3 57.8 51.3 NE 104.7 90.6 75.6 65.7 60.0 49.0 42.1 NNE 104.7 90.6 75.6 60.9 61.3 57.8 44.8 N 104.7 90.6 75.6 65.7 61.3 57.8 41.6 NNW 104.7 90.6 75.6 65.7 61.3 57.8 44.1 NW 104.7 90.6 75.6 65.7 61.3 57.8 42.5 WNW 1047 90.6 75.6 65.7 61.3 57.8 44.8 v 104.7 90.6 75.6 65.7 56.5 57.8 51.3 WSW 104.7 90.6 75.6 65.7 60.3 49.0 42.6 SW 104.7 90.6 75.6 65.7 61.3 57.8 45.8 SSW 104.7 90.6 75.6 65.7 56.0 46.2 41.4 S 104.7 90.6 75.6 65.7 61.3 57.8 42.5 SSE 104.7 90.6 75.6 65.7 61.3 52.6 47.3 SE 104.7 90.6 75.6 65.7 60.1 48.9 42.1 ESE 104.7 90.6 75.6 65.7 61.3 57.8 51.3

DUANE ARNTE .D 22 AZIMUTH, E 1

0.98 0.96 0.94 0.92 0.9 0.88 0.86 0 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 22 AZIMUTH, ENE 1

0.98 0.96 0.94 0.92 0.9 I:-.tJ 0.88 zc 0.86 0.84

>2 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 22 AZIMUTH, NE 1

0.98 0.96 0.94 0.92 0.9 0.88 Z c 0.86 0 0.84 Ld 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 22 AZIMUTH, NNE 1

0.98 0.96 0.94, 0.92 0.9 0.88 ZOIc 0.86 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 22 AZIMUTH, N 1

0.98 0.96 0.94 0.92 0.9 0.88 L

Zc 0.86

>0 0.84 t 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 22 AZIMUTH, NNW 1

0.98 0.96 0.94 0.92 0.9 0.88 0.86

>c 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARMLD 22 AZIMUTH, NW 1 -. IIIV 0.98 0.96 0.94 0.92 0.9 -4 0.88 ;Z:

Zc 0.86 p >0 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 I I 4- 4 4. 4. 1. 4. 1 I O0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 22 AZIMUTH, WNW I1 untlllll 0.98 0.96 0.94 0.92 0.9 0.88 J:

0.86

>0 0.84

.C Ld 0.82 0.8 0.78 0.76 0.74 0.72 0.7- 1 1 1 I t II I1 I I I 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARROLD 22 AZIMUTH, W 1

0.98 0.-96 0.94 0.92 0.9 0.88 p

Z c 0.86

>0o 0.84 lid 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 22 AZIMUTH, WSW 1

0.98 0.96 0.94 0.92 0.9 0.88 Zc 0.86 Oi 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 22 AZI MUrH, SW 1

0.98 0.96 0.94 0.92 0.9 Lem 0.88 ii P 3 0.86 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT £

DUANE ARNOLD 22 AZIMUTH, SSW 1

0.98 0.96 0.94 0.92 0.9 0.88 Z 0.86

> 0 0.84 Ht 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARN6LD 22 AZIMUTH, S 1

0.98 0.96 0.94 0.92 0.9 0.88 Z

0.86

>0 0.84 IIi 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 22 AZIMUTH, SSE 1

0.98 0.96 0.94 0.92 0.9 I? 0.88 U.88 II .J 0.84

'IL 0.82 0.8 0.78 0.78 0.74 0.72 0.7 0 2 4 8 10 12 (Thousands)

DISTANCE, FT

qr0 DUANE ARNOLD 22 AZIMUTIH, SE 1 I . I I 0.98 0.96 0.94 0.92 0.9 0.88 Z c 0.86 0.84 zc

>t 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 22 AZIMUTH, ESE 1

0.98 0.96 0.94 0.92 0.9 I: "I 0.88

-I, Zc 0.86 0.84

>2 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #22-WS3000 SOURCE*RECEIVER TOPOGRAPHICAL INPUTS ALL BEARINGS ARE WITH RESPECT TO THE NORTH MEASURING CLOCKWISE GRID GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTION 1 500. 90.00 810.00 SOFT 0. NO 0. 0.

2 1000. 90.00 810.00 SOFT 0. NO 0. 0.

3 2000. 90.00 850.00 SOFT 0. NO 0. 0.

4 4000. 90.00 850.00 SOFT 0. NO 0. 0.

5 6000. 90.00 855.00 SOFT 0. NO 0. 0.

6 8000. 90.00 800.00 SOFT 0. YES 2500. 870.

7 12000. 90.00 850.00 SOFT 0. NO 0. 0.

500. 67.50 810.00 SOFT 0. NO 0. 0.

1000. 67.50 810.00 SOFT 0. NO 0. 0.

2000. 67.50 830.00 SOFT 0. NO 0. 0.

11 4000. 67.50 850.00 SOFT 0. YES 3200. 860.

12 6000. 67.50 850.00 SOFT 0. No 0. 0.

13 8000. 67.50 850.00 SOFT 0. YES 6300. 870.

14 12000. 67.50 800.00 SOFT 0. YES 6300. 870.

15 500. 45.00 820.00 SOFT 0. No 0. 0.

16 1000. 45.00 810.00 SOFT 0. NO 0. 0.

17 2000. 45.00 820.00 SOFT 0. No 0. 0.

18 4000. 45.00 850.00 SOFT 0. NO 0. 0.

19 6000. 45.00 860.00 SOFT 0. NO 0. 0.

20 8000. 45.00 870.00 SOFT 0. NO 0. 0.

21 12000. 45.00 820.00 SOFT 0. YES 7500. 870.

22 500. 22.50 835.00 SOFT 0. NO 0. 0.

23 1000. 22.50 820.00 SOFT 0. NO 0. 0.

24 2000. 22.50 835.00 SOFT 0. NO 0. 0.

25 4000. 22.50 830.00 SOFT 0. NO 0. 0.

26 6000. 22.50 840.00 SOFT 0. NO 0. 0.

27 8000. 22.50 860.00 SOFT 0. NO 0. 0.

28 12000. 22.50 865.00 SOFT 0. YES 9100. 880.

29 500. .00 840.00 SOFT 0. NO 0. 0.

30 1000. .00 825.00 SOFT 0. NO 0. 0.

31 2000. .00 850.00 SOFT 0. NO 0. 0.

32 4000. .00 845.00 SOFT 0. YES 3200. 860.

33 6000. .00 835.00 SOFT 0. NO 0. 0.

34 8000. .00 860.00 SOFT 0. NO 0. 0.

35 12000. .00 880.00 SOFT 0. NO 0. 0.

1 500. 337.50 840.00 SOFT 0. NO 0 .

0 .

GRID GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTION 37 1000. 337.50 850.00 SOFT 0. NO 0. 0.

38 2000. 337.50 855.00 SOFT 0. NO 0. 0.

39 4000. 337.50 865.00 SOFT 0. NO 0. 0.

40 6000. 337.50 870.00 SOFT 0. NO 0. 0.

41 8000. 337.50 875.00 SOFT 0. NO 0. 0.

42 12000. 337.50 840.00 SOFT 0. YES 8000. 875.

43 500. 315.00 845.00 SOFT 0. NO 0. 0.

44 1000. 315.00 860.00 SOFT 0. NO 0. 0.

45 2000. 315.00 860.00 SOFT 0. YES 1800. 870.

46 4000. 315.00 860.00 SOFT 0. NO 0.

47 6000. 315.00 875.00 SOFT 0. YES NO 5800.

0.

80.

48 8000. 315.00 895.00 SOFT 0.

49 12000. 315.00 860.00 SOFT 0. YES 8000. 895.

50 500. 292.50 860.00 SOFT 0. NO 0. 0.

51 1000. 292.50 870.00 SOFT 0. NO 0. 0.

52 2000. 292.50 875.00 SOFT 0. NO 0. 0.

53 4000. 292.50 875.00 SOFT 0. NO 0. 0.

54 6000. 292.50 875.00 SOFT 0. NO 0. 0.

55 8000. 292.50 890.00 SOFT 0. No 0. 0.

56 12000. 292.50 845.00 SOFT 0. YES 6700, 890.

57 500. 270.00 860.00 SOFT 0. No 0. 0.

58 1000. 270.00 840.00 SOFT 0. NO 0. 0.

59 2000. 270.00 855.00 SOFT 0. NO 0. 0.

60 4000. 270.00 850.00 SOFT 0. NO 0. 0.

61 6000. 270.00 865.00 SOFT 0. NO 0. 0.

62 8000. 270.00 865.00 SOFT 0. NO 0. 0.

63 12000. 270.00 845.00 SOFT 0. NO 0. 0.

64 500. 247.50 840.00 SOFT 0. NO 0. 0.

65 1000. 247.50 845.00 SOFT 0. NO 0. 0.

66 2000. 247.50 835.00 SOFT 0. No 0. 0.

67 4000. 247.50 850.00 SOFT 0. NO 0. 0.

68 6000. 247.50 850.00 SOFT 0. NO 0. 0.

69 8000. 247.50 840.00 SOFT 0. YES 6600. 850.

70 12000. 247.50 830.00 SOFT 0. NO 0. 0.

71 500. 225.00 830.00 SOFT 0. NO 0. 0.

72 1000. 225.00 840.00 SOFT 0. NO 0. 0.

GRID GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTION 73 2000. 225.00 818.00 SOFT 0. NO 0. 0.

74 4000. 225.00 855.00 SOFT 0. NO 0. 0.

75 6000. 225.00 820.00 SOFT 0. YES 3550. 860.

76 8000. 225.00 842.00 SOFT 0. NO 0. 0.

77 12000. 225.00 840.00 SOFT 0. NO 0. 0.

78 500. 202.50 820.00 SOFT 0. NO 0. 0.

79 1000. 202.50 825.00 SOFT 0. NO 0. 0.

80 2000. 202.50 812.00 SOFT 0. NO 0. 0.

81 4000. 202.50 850.00 SOFT 0. NO 0. 0.

82 6000. 202.50 805.00 SOFT 0. YES 4600. 880.

83 8000. 202.50 855.00 SOFT 0. YES 4600. 880.

12000. 202.50 830.00 SOFT 0. YES 4600. 880.

500. 180.00 818.00 SOFT 0. NO 0. 0.

1000. 180.00 814.00 SOFT 0. NO 0. 0.

87 2000. 180.00 800.00 SOFT 0. No 0. 0.

88 4000. 180.00 810.00 SOFT 0. YES 3600. 820.

89 6000. 180.00 830.00 SOFT 0. NO 0. 0.

90 8000. 180.00 870.00 SOFT 0. NO 0. 0.

91 12000. 180.00 820.00 SOFT 0. YES 8000. 870.

92 500. 157.50 815.00 SOFT 0. - NO 0. 0.

93 1000. 157.50 805.00 SOFT 0. NO 0. 0.

94 2000. 157.50 815.00 SOFT 0. N0 0. 0.

95 4000. 157.50 815.00 SOFT 0. NO 0. 0.

96 6000. 157.50 780.00 SOFT 0. NO 0. 0.

97 8000. 157.50 790.00 SOFT 0. NO 0. 0.

98 12000. 157.50 770.00 SOFT 0. YES 10800. 860.

99 500. 135.00 810.00 SOFT 0. No 0. 0.

100 1000. 135.00 820.00 SOFT 0. NO 0. 0.

101 2000. 135.00 835.00 SOFT 0. NO 0. 0.

102 4000. 135.00 845.00 SOFT 0. YES 3000. 860.

103 6000. 135.00 800.00 SOFT 0. YES 3000. 860.

104 8000. 135.00 820.00 SOFT 0. NO 0. 0.

105 12000. 135.00 825.00 SOFT 0. YES 10300. 850.

106 500. 112.50 810.00 SOFT 0. NO 0. 0.

107 1000. 112.50 815.00 SOFT 0. NO 0. 0.

108 2000. 112.50 840.00 .SOFT 0. NO 0. 0.

109 4000. 112.50 850.00 SOFT 0. YES 2750. 870.

110 6000. 112.50 820.00 SOFT 0. YES 2750. 870.

111 8000. 112.50 790.00 SOFT 0. YES 2750. 870.

12000. 112.50 850.00 SOFT 0. NO 0. 0.

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #22-WS3000 NOISE SOURCE POWER LEVEL INPUT INDEX SOURCE DBA DBC 31.5 63 125 250 500 1000 2000 4000 8000 (HZ) 1 DUANE

WS3000 158.1 158.0 .0 .0 .0 .0 147.0 157.0 149.0 141.0. 124.0 XOn .00 YO= .00 ZO= 896.00 HEIGHT ABOVE GROUND= 52.00 IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #22-WS3000 METEOROLOGICAL INPUT CONDITIONS Hi 10.67 METERS H2= 50.29 METERS WIND WIND SPEED(MPS) TEMPERATURE(C) RELATIVE BAROMETRIC YEAR SEASON MONTH DATE HOUR DIRECTION H1 H2 H1 H2 HUMIDITY PRESSURE(MM OF HG) 8 21 12 177.0 2.1 2.6 23.9 23.2 30.0 742.0

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #22-WS3000 SOUND PRESSURE LEVELS IN DBC UNDER MET CONDITION 1 DISTANCE IN FEET AZIMUTH 500. 1000. 2000. 4000. 6000. 8000. 12000.

E 104.6 90.5 75.6 65.7 61.3 53.0 51.3 ENE 104.6 90.5 75.6 60.9 61.3 52.5 45.4 NE 104.7 90.5 75.6 65.7 60.0 53.9 36.4 NNE 104.7 90.6 75.6 65.7 61.3 57.8 46.4 N 104.7 90.6 75.6 60.7 61.3 57.8 51.3 NNW 104.7 90.6 75.6 65.7 61.3 57.8 45.9 NW 104.7 90.6 69.2 .65.7 55.9 57.8 45.4 WNW 104.7 90.6 75.6 65.7 61.3 57.8 45.5 W 104.7 90.6 75.6 65.7 61.3 57.8 51.3 WSW 104.7 90.6 75.6 65.7 60.3 54.3 42.6 SW 104.7 90.6 75.6 65.7 56.2 57.8 51.3 SSW 104.7 90.6 75.6 65.7 49.4 52.8 46.4 S 104.6 90.5 75.6 60.9 61.3 57.8 45.2 SSE 104.6 90.5 75.6 65.7 61.3 57.3 32.7 SE 104.6 90.6 75.6 60.9 54.7 53.9 36.4 ESE 104.6 90.5 75.6 60.7 56.2 52.6 51.3 I

DUANE ARNOLD 23 AZIMUTH, E 1

O:98 0.96 0.94 0.92 0.9 0.88 Zc 0.86

>3 O

0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNULD 23 AZIMUTH, ENE 1

0.98 0.96 0.94 0.92 0.9 0.88 0.86 L-v' zc

>0 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 23 AZIMUTH, NE 0.98 0.96 0.94 0.92 L- 0.88 Z 0.86 0.84 0.82 0.8 0.74 0.76 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 23 AZIMUTH, NNE 1

0.98 0.96 0.94 0.92 0.9 0.88 o 0.86 0.84 0 0.82 0.8 0.78 0.76 0.74 0.72 0.7 O 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 23 AZIMUTH, N 1

0.98 0.96 0.94 0.92 0.9 zc 0.88

>0 0 0.86 r

0.84 0.82 0.8 0.78 0.76 0.74 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARN17LD 23 AZIMUTH, NNW 1

0.98 0.96 0.94 0.92 0.9 IT 0.88 Zc 0.86 0 0.84 Ld 0.82 0.8 0.78 0.76 0.74 0.72 0.7 O 2 4 6 1 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 23 AZIMUTH, NW 920- --

910 900 890 880 870 850 840 830 820 810 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 23 AZIMU'TH, WNW 1

0.98 0.96 0.94 0.92 0.9 V 0.88 Z c 0.86 0.84 0

0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 23 AZIMUTH, W 1

0.98 0.96 0.94 0.92 0.9 0.88 z

Z 0.86

> 0 0.84 Ld I 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 23 AZIMUTH, WSW 1

0.98 0.96 0.94 0.92 0.9 0.88 tz-%

0.86

>0 0.84 hI it 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 23 AZIMUTH, SW Il I -~ -illi 0.98 0.96 0.94 0.92 0.9 -1 0.88 Z c 0.86 OR 0.84

>0 Lq t 0.82 0.8 0.78 0.76 0.74 0.72 0.7 I I I .I i i m 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 23 AZIMUTH, SSW 1

0.98 0.94 0.92 O.9 0.88 0.86 0I 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 23 AZIMUTH, S 1

0.98 0.96 0.94 0.92 0.9 0 0.88 0.86

>0 0.84 Ld 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 23 AZIMUTH, SSE 920 910 900 890 880 870 860 850 0

840 830 Id Z 820 810 800 790 780 770 760 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 23 AZIMUTH, SE 920 910 900 890 880 870 i

860 0

850 840 Id 830 820 810 800 790 780 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARWLD 23 AZIMUTH, ESE 0.98 0.96 0.94 0.92 0.9 0.88 0.86

> 0.84 id 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #23-WS3000 SOURCE-RECEIVER TOPOGRAPHICAL INPUTS ALL BEARINGS ARE WITH RESPECT TO THE NORTH MEASURING CLOCKWISE GRID GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTION 1 500. 90.00 848.00 SOFT 0. No 0. 0.

2 1000. 90.00 845.00 SOFT 0. No 0. 0.

3 2000. 90.00 815.00 SOFT 0. NO 0. 0.

4 4000. 90.00 825.00 SOFT 0. NO 0. 0.

5 6000. 90.00 800.00 SOFT 0. YES 5000. 820.

6 8000. 90.00 830.00 SOFT 0. YES 7950. 840.

7 12000. 90.00 845.00 SOFT 0. NO 0. 0 8 500. 67.50 850.00 SOFT 0. NO 0.

9 1000. 67.50 841.00 SOFT 0. NO 0.

10 2000. 67.50 825.00 SOFT 0. NO 0. 2.

11 4000. 67.50. 850.00 SOFT 0. NO 0. 0.

12 6000. 67.50 850.00 SOFT 0. NO 0. 0.

13 8000. 67.50 850.00 SOFT 0. NO 0. 0.

14 12000. 67.50 855.00 SOFT 0. NO 0. 0.

15 500. 45.00 849.00 SOFT 0. NO 0. 0.

16 1000. 45.00 842.00 SOFT 0. NO 0. 0.

17 2000. 45.00 830.00 SOFT 0. NO 0. 0.

18 4000. 45.00 830.00 SOFT 0. NO 0. 0.

19 6000. 45.00 863.00 SOFT 0. NO 0. 0.

20 8000. 45.00 862.00 SOFT 0. NO 0. 0.

21 12000. 45.00 875.00 SOFT 0. YES 10400. 890.

22 500. 22.50 848.00 SOFT 0. NO 0. 0.

23 1000. 22.50 842.00 SOFT 0. NO 0. 0.

24 2000. 22.50 845.00 SOFT 0. NO 0. 0.

25 4000. 22.50 865.00 SOFT 0. NO 0. 0.

26 6000. 22.50 850.00 SOFT 0. No 0. 0.

27 8000. 22.50 852.00 SOFT 0. NO 0. 0.

28 12000. 22.50 870.00 SOFT 0. NO 0. 0.

29 500. .00 848.00 SOFT 0. NO 0. 0.

30 1000. .00 850.00 SOFT 0. NO 0. 0.

31 2000. .00 840.00 SOFT 0. NO 0. 0.

32 4000. .00 855.00 SOFT 0. NO 0. 0.

33 6000. .00 860.00 SOFT 0. NO 0. 0.

34 8000. .00 847.00 SOFT 0. NO 0. 0.

35 12000. .00 870.00 SOFT 0. YES 11350. 910.

36 50 .

37 50 A0 .

n SOFT 0 .

NO 0. Ad

GRID GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTION 37 1000. 337.50 850.00 SOFT 0. gO 0. 0.

38 2000. 337.50 850.00 SOFT 0. No 0. 0.

39 4000. 337.50 862.00 SOFT 0. NO 0. 0.

40 6000. 337.50 860.00 SOFT 0. No 0. 0.

41 8000. 337.50 873.00 SOFT 0. NO 0. 0.

42 12000. 337.50 845.00 SOFT 0. YES 8000. 873.

43 500. 315.00 850.00 SOFT 0. NO 0. 0.

1000. 315.00 850.00 SOFT 0. No 0. 0.

2000. 315.00 850.00 SOFT 0. NO 0. 0.

4000. 315.00 853.00 SOFT 0. NO 0. 0.

6000. 315.00 840.00 SOFT 0. No 0. 0.

48 8000. 315.00 840.00 SOFT 0. NO 0. 0.

49 12000. 315.00 800.00 SOFT 0. YES 7000. 850.

50 500. 292.50 840.00 SOFT 0. NO 0. 0.

51 1000. 292.50 835.00 SOFT 0. No 0. 0.

52 2000. 292.50 850.00 SOFT 0. NO 0. 0.

53 4000. 292.50 853.00 SOFT 0. No 0. 0.

54 6000. 2.50 850.00 SOFT 0. No 0. 0.

55 8000. 292.50 820.00 SOFT 0. YES 6200. 850.

56 12000. 292.50 800.00 SOFT 0. NO 0. 0.

57 500. 270.00 830.00 SOFT 0. NO 0. .0.

58 1000. 270.00 840.00 SOFT 0. NO 0. 0.

59 2000. 270.00 850.00 SOFT 0. NO 0. 0.

60 4000. 270.00 852.00 SOFT 0. NO 0. 0.

61 6000. 270.00 840.00 SOFT 0. No 0. 0.

62 8000. 270.00 830.00 SOFT 0. NO 0. 0.

63 12000. 270.00 840.00 SOFT 0. NO 0. 0.

64 500. 247.50 830.00 SOFT 0. NO 0. 0.

65 1000. 247.50 850.00 SOFT 0. NO 0. 0.

66 2000. 247.50 845.00 SOFT 0. NO 0. 0.

67 4000. 247.50 840.00 SOFT 0. NO 0. 0.

68 6000. 247.50 850.00 SOFT 0. NO 0. 0.

69 8000. 247.50 820.00 SOFT 0. YES 6600. 860.

70 12000. 247.50 790.00 SOFT 0. YES 6600. 860.

71 500. 225.00 830.00 SOFT 0. NO 0. 0.

72 1000. 225.00 830.00 SOFT 0. NO 0. 0.

GRID GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTI0N 73 2000. 225.00 830.00 SOFT 0. NO 0. 0.

74 4000. 225.00 832.00 SOFT 0. No 0.

75 6000. 225.00 840.00 SOFT 0. NO 0. 0.

76 8000. 225.00 853.00 SOFT 0. No 0. 0.

77 12000. 225.00 830.00 SOFT 0. YES 9600. 870.

78 500. 202.50 828.00 SOFT 0. NO 0. 01 79 1000. 202.50 825.00 SOFT 0. NO 0. 0.

80 2000. 202.50 820.00 SOFT 0. NO 0. 0.

81 4000. 202.50 830.00 SOFT 0. NO 0. 0.

82 6000. 202.50 830.00 SOFT 0. NO 0. 0.

83 8000. 202.50 860.00 SOFT 0. No 0. 0.

84 12000. 202.50 850.00 SOFT 0. YES 8400. 900.

85 500. 180.00 835.00 SOFT 0. NO 0.

86 1000. 180.00 830.00 SOFT 0. NO 0.

87 2000. 180.00 810.00 SOFT 0. No 0. 0.

88 4000. 180.00 820.00 SOFT 0. NO 0. 0.

89 6000. 180.00 830.00 SOFT 0. NO 0. 0.

90 8000. 180.00 810.00 SOFT 0. NO 0. 0.

91 12000. 180.00 880.00 SOFT 0. YES 9700. 900.

92 500. 157.50 845.00 SOFT 0. NO 0. 0.

93 1000. 157.50 842.00 SOFT 0. NO 0. 0.

94 2000. 157.50 830.00 SOFT 0. NO 0. 0.

95 4000. 157.50 810.00 SOFT 0. NO 0. 0.

96 6000. 157.50 790.00 SOFT 0. NO 0. 0.

97 8000. 157.50 770.00 SOFT 0. NO 0. 0.

98 12000. 157.50 790.00 SOFT 0. NO 0. 0.

99 500. 135.00 848.00 SOFT 0. NO 0. 0.

100 1000. 135.00 848.00 SOFT 0. NO 0. 0.

101 2000. 135.00 840.00 SOFT 0. NO 0. 0.

102 4000. 135.00 830.00 SOFT 0. NO 0. 0.

103 6000. 135.00 820.00 SOFT 0. No 0. 0.

104 8000. 135.00 798.00 SOFT 0. YES 6100. 830.

105 12000. 135.00 790.00 SOFT 0. YES 9300. 830.

106 500. 112.50 848.00 SOFT 0. NO 0. 0.

107 1000. 112.50 848.00 SOFT 0. No 0. 0.

108 2000. 112.50 810.00 SOFT 0. NO 0. 0.

109 4000. 112.50 822.00 SOFT 0. NO 0. 0.

110 6000. 112.50 848.00 SOFT 0. . NO 0. 0.

111 8000. 112.50 850.00 SOFT 0. No 0. 0.

112 12000. 112.50 847.00 SOFT 0.- No 0. 0.

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #23-WS3000 NOISE SOURCE POWER LEVEL INPUT NDEX SOURCE DBA DBC 31.5 63 125 250 500 1000 2000 4000 8000 (HZ) 1 DUANE - WS3000 158.1 158.0 .0 .0 .0 .0 147.0 . 157.0 149.0 141.0 124.0 x0= .00 YO= .00 zo 902.00 HEIGHT ABOVE GROUND= 52.00 IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD.ANS SIREN #23-WS3000 METEOROLOGICAL INPUT CONDITIONS Hi1 10.67 METERS H2= 50.29 METERS WIND WIND SPEED(MPS) TEMPERATURE(C) RELATIVE BAROMETRIC YEAR SEASON MONTH DATE HOUR DIRECTION Ni H2 Hi H2 HUMIDITY PRESSURE(MM OF HG) 1981 8 21 12 177.0 2.1 2.6 23.9 23.2 30.0 742.0

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #23-WS3000 SOUND PRESSURE LEVELS IN DBC UNDER MET CONDITION 1 DISTANCE IN FEET AZIMUTH 500. 1000. 2000. 4000. 6000. 8000. 12000.

E 104.7 90.6 75.6 65.7 56.5 47.2 51.3 ENE 104.7 90.6 75.6 65.7 61.3 57.8 51.3 NE 104.7 90.6 75.6 65.7 60.0 53.9 36.8 NNE 104.7 90.6 75.6 65.7 61.3 57.8 51.3 N 104.7 90.6 75.6 65.7 61.3 57.8 39.9 NNW 104.7 90.6 75.6 65.7 61.3 57.8 46.3 Nu 104.7 90.6 75.6 65.7 61.3 57.8 46.4 WNW 104.7 90.6 75.6 65.7 61.3 52.4 51.3 W 104.7 90.6 75.6 65.7 61.3 57.8 51.3 WSW 104.7 90.6 75.6 65.7 60.3 46.7 37.1 SW 104.7 90.6 75.6 65.7 61.3 57.8 44.7 SSW 104.7 90.6 75.6 65.7 61.3 57.8 44.2 S 104.7 90.6 75.6 65.7 61.3 57.8 45.7 SSE 104.7 90.6 75.6 65.7 61.3 57.3 47.3 SE 104.7 90.6 75.6 65.7 60.0 48.9 36.7 ESE 104.7 90.6 75.6 65.7 61.3 57.8 51.3

DUANE .ARNOLD 24 AZI MUTH, E 900 890 880 870 860 850 2 840 0 830 820 I 810 800 790 780 770 760 750 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 24 AZIMUTH, ENE 900 890 880 870 860 850 Id 840 830 820 810 800 0 2 4 .6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 24 AZIMUTH, NE 900 890 880 870 860 850 840 830 L 820 810 0 800 790

'9 780 hi 770 760 750 740 730 720 710 700 O 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 24 AZIMUTH, NNE 900 890 880 870 860 850 840 830 820 810 0

>L 800 2f 790 780 770 760 750 740 730 720 710 700 O 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 24 AZIMUTH, N 900 890 880 870 860 850 8.40 830 820 810 0 800 790 Lii 780 770 760 750 740 730 720 710 700 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 24 AZIMUTH, NNW 900 890 880 870 860 850 840 830 820 810 0

800 790 Id 780 770 760 750 740 730 720 710 700 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 24 AZIMUTH, NW 900 890 880 870 860 850 840 830 820 810 0

800 4

790 I'] 780 770 760 750 740 730 720 710 700 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 24 AZIMUTH, WNW 900 890 880 870 860 850 840 830 Ii: 820 810 0

800 790 780 770 760 750 740 730 720 710 700 0 .2 4 6 8 10 12 (Thousands)

DISTANCE, FT 0

DUANE ARNPULD 24 AZIMUTH, W 900 890 880 870 860 850 840 830 820 810 0

1= 800 790 780 770 760 750 740 730 720 710 700 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 24 AZIMUTH, WSW 920 900 860 840 780 -, .

760 740 720 700 O 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNTLD 24 AZIMUTH, SW 900 890 Sao 870-8650 850 8140 8330 820 1300 790 (I 7180 770 750 740 730 720 710 700 0 2 4 6 8 10 12 (Thousands)

DISTANGE, FT

DUANE ARNOLD 24 AZIMUTH, SSW 900 890 880 870 860 850 840 830 820 810 0

800

,q 790 Id 780 770 760 750 740 730 720 710 700 O 2 4 6 8 10 12 (Thousands)

DISTANCE, FT 0

DUANE ARN1TLD 24 S AZIMUTH, S 900 890 880 870 860 850 840 830 820 i 810 0

800 790 p 780 770 760 750 740 730 720 710 700 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 24 AZIMUTH, SSE 900 890 880 870 860 850 840 830 820 i 810 0

800 790 H

bi 780 770 760 750 740 730 720 710 700 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 24 AZIMUTH, SE 900 890 880 870 860 850 840 830 820 810 0

800 790 I> 780 770 760 750 740 730 720 710 700 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 24 AZIMUTH, ESE 900 890 880 870 860 850 840 830 L 820 810 0

800 790 780 770 760 750 740 730 720 710 700 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #24-WS3000 SOURCE-RECEIVER TOPOGRAPHICAL INPUTS ALL BEARINGS ARE WITH RESPECT TO THE NORTH MEASURING CLOCKWISE GRID GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTION 1 500. 90.00 845.00 SOFT 0. NO 0. 0.

2 1000. 90.00 835.00 SOFT 0. NO 0. 0.

3 2000. 90.00 845.00 SOFT 0. NO 0. 0.

4 4000. 90.00 845.00 SOFT 0. NO 0. 0.

5 6000. 90.00 825.00 SOFT 0. NO 0. 0.

6 8000. 90.00 805.00 SOFT 0. YES 7100. 840.

7 12000. 90.00 830.00 SOFT 0. NO 0. 0.

500. 67.50 840.00 SOFT 0. NO 0. 0.

1000. 67.50 830.00 SOFT 0. NO 0. 0.

10 2000. 67.50 845.00 SOFT 0. NO 0. 0.

11 4000. 67.50 840.00 SOFT 0. NO 0. 0.

12 6000. 67.50 845.00 SOFT 0. NO 0. 0.

13 8000. 67.50 840.00 SOFT 0. NO 0. 0.

14 12000. 67.50 840.00 SOFT 0. NO 0. 0.

15 500. 45.00 835.00 SOFT 0. NO 0. 0.

16 1000. 45.00 840.00 SOFT 0. NO 0. 0.

17 2000. 45.00 860.00 SOFT 0. NO 0. 0.

18 4000. 45.00 850.00 SOFT 0. NO 0. 0.

19 6000. 45.00 855.00 SOFT 0. NO 0. 0.

20 8000. 45.00 860.00 SOFT 0. NO 0. 0.

21 12000. 45.00 860.00 SOFT 0. NO 0. 0.

22 500. 22.50 835.00 SOFT 0. NO 0. 0.

23 1000. 22.50 835.00 SOFT 0. NO 0. 0.

24 2000. 22.50 845.00 SOFT 0. NO 0. 0.

25 4000. 22.50 840.00 SOFT 0. NO 0. 0.

26 6000. 22.50 850.00 SOFT 0. NO 0. 0.

27 8000. 22.50 827.00 SOFT 0. YES 7100. 850.

28 12000. 22.50 827.00 SOFT 0. NO 0. 0.

29 500. .00 830.00 SOFT 0. NO 0. 0.

30 1000. .00 815.00 SOFT 0. NO 0. 0.

31 2000. .00 830.00 SOFT 0. NO 0. 0.

32 4000. .00 820.00 SOFT 0. NO 0. 0.

33 6000. .00 840.00 SOFT 0. NO 0. 0.

34 8000. .00 800.00 SOFT 0. YES 6000. 840.

35 12000. .00 807.00 SOFT 0. YES 1140. 820.

500. 337.50 840.00 SOFT 0. NO 0. 0.

GRID GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTION 37 1000. 337.50 840.00 SOFT 0. NO 0. 0.

38 2000. 337.50 820.00 SOFT 0. NO 0. 0.

39 4000. 337.50 797.00 SOFT 0. No 0. 0.

40 6000. 337.50 812.00 SOFT 0. NO 0. 0.

41 8000. 337.50 815.00 SOFT 0. NO 0. 0.

42 12000. 337.50 810.00 SOFT 0. NO 0. 0.

43 500. 315.00 840.00 SOFT 0. NO 0. 0.

44 1000. 315.00 845.00 SOFT 0. NO 0. 0.

45 2000. 315.00 800.00 SOFT 0. NO 0, 0.

46 4000. 315.00 815.00 SOFT 0. NO 0. 0.

47 6000. 315.00 835.00 SOFT 0. NO 0. 0, 48 8000. 315.00 800.00 SOFT 0. YES 6500. 840 49 12000. 315.00 785.00 SOFT 0. NO 0.

50 500. 292.50 838.00 SOFT 0. NO 0.

51 1000. 292.50 832.00 SOFT 0. NO 0. 0.

52 2000. 292.50 792.00 SOFT 0. NO 0. 0.

53 4000. 292.50 815.00 SOFT 0. NO 0. 0.

54 6000. 292.50 840.00 , SOFT 0. NO 0. 0.

55 8000. 292.50 805.00 SOFT 0. YES 4700. 840.

56 12000. 292.50 785.00 SOFT 0. NO 0. 0.

57 500. 270.00 835.00 SOFT 0. NO 0. 0.

58 1000. 270.00 830.00 SOFT 0. NO 0. 0.

59 2000. 270.00 790.00 SOFT 0. NO 0. 0.

60 4000. 270.00 815.00 SOFT 0. YES 2400. 830.

61 6000. 270.00 810.00 SOFT 0. No 0. 0.

62 8000. 270.00 800.00 SOFT 0. NO 0. 0.

63 12000. 270.00 730.00 SOFT 0. YES 5500. 820.

64 500. 247.50 835.00 SOFT 0. NO 0. 0.

65 1000. 247.50 820.00 SOFT 0. NO 0. 0.

66 2000. 247.50 810.00 SOFT 0. NO 0. 0.

67 4000. 247.50 775.00 SOFT 0. NO 0. 0.

68 6000. 247.50 765.00 SOFT 0. NO 0. 0.

69 8000. 247.50 830.00 SOFT 0. NO 0. 0.

70 12000. 247.50 730.00 SOFT 0. YES 8500. 910.

71 500. 225.00 830.00 SOFT 0. NO 0. 0.

72 1000. 225.00 830.00 SOFT 0. NO 0. 0.

GRID GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTION 73 2000. 225.00 825.00 SOFT 0. NO 0. 0.

74 4000. 225.00 825.00 SOFT 0. YES 3600. 840.

75 6000. 225.00 785.00 SOFT 0. YES 3600. 840.

76 8000. 225.00 790.00 SOFT 0. YES 7600. 810.

77 12000. 225.00 780.00 SOFT 0. YES 8500. 840.

78 500. 202.50 830.00 SOFT 0. NO 0. 0.

79 1000. 202.50 840.00 SOFT 0. NO 0. 0.

80 2000. 202.50 840.00 SOFT 0. NO 0. 0.

81 4000. 202.50 830.00 SOFT 0. YES 3300. 860.

82 6000. 202.50 805.00 SOFT 0. YES 3300. 860.

83 8000. 202.50 745.00 SOFT 0. YES 3300. 860.

84 12000. 202.50 720.00 SOFT 0. YES 3300. 860.

85 500. 180.00 840.00 SOFT 0. NO 0. 0.

1000. 180.00 840.00 SOFT 0. NO 0. 0.

2000. 180.00 840.00 SOFT 0. NO 0. 0.

4000. 180.00 855.00 SOFT 0. YES 2400. 860.

89 6000. 180.00 790.00 SOFT 0. NO 0. 0.

90 8000. 180.00 775.00 SOFT 0. YES 2400. 860.

91 12000. 180.00 820.00 SOFT 0. NO 0. 0.

92._ 500. 157.50 840.00 SOFT 0. NO 0. 0.

93 1000. 157.50 820.00 SOFT 0. No 0. 0.

94 2000. 157.50 840.00 SOFT 0. NO 0. 0.

95 4000. 157.50 840.00 SOFT 0. YES 3100. 850.

96 6000. 157.50 810.00 SOFT 0. YES 3100. 850.

97 8000. 157.50 740.00 SOFT 0. YES 2500. 850.

98 12000. 157.50 740.00 SOFT 0. YES 3100. 850.

99 500. 135.00 830.00 SOFT 0. NO 0. 0.

100 1000. 135.00 840.00 SOFT 0. NO 0. 0.

101 2000. 135.00 835.00 SOFT 0. No 0. 0.

102 4000. 135.00 830.00 SOFT 0. YES 3500. 840.

103 6000. 135.00 785.00 SOFT 0. NO 0. 0.

104 8000. 135.00 800.00 SOFT 0. NO 0. 0.

105 12000. 135.00 800.00 SOFT 0. YES 8500. 845.

106 500. 112.50 835.00 SOFT 0. NO 0. 0.

107 1000. 112.50 830.00 SOFT 0. NO 0. 0.

108 2000. 112.50 790.00 SOFT 0. NO 0. 0.

109 4000. 112.50 820.00 SOFT 0. NO 0. 0.

110 6000. 112.50 820.00 SOFT 0. NO 0. 0.

111 8000. 112.50 800.00 SOFT 0. NO 0. 0.

112 12000. 112.50 740.00 SOFT 0. YES 5500. 830.

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #24*WS3000 NOISE SOURCE POWER LEVEL INPUT INDEX SOURCE DBA DBC - 31.5 63 125 250 500 1000 2000 4000 8000 (VZ) 1 DUANE - WS3000 158.1 158.0 .0 .0 .0 .0 147.0 157.0 149.0 141.0 124.0 X0= .00 YO= .00 ZO 892.00 HEIGHT ABOVE GROUND= 52.00 IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #24-WS3000 METEOROLOGICAL INPUT CONDITIONS His 10.67 METERS H2= 50.29 METERS WIND WIND SPEED(MPS) TEMPERATURE(C) RELATIVE BAROMETRIC YEAR SEASON MONTH DATE HOUR DIRECTION Hi H2 Hi H2 HUMIDITY PRESSURE(MM OF HG) 1981 8 21 12 177.0 2.1 2.6 23.9 23.2 30.0 742.0

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #24-WS3000 SOUND PRESSURE LEVELS IN DBC UNDER MET CONDITION 1 DISTANCE IN FEET AZIMUTH 500. 1000. 2000. 4000. 6000. 8000. 12000.

E 104.7 90.6 75.6 65.7 61.3 49.5 51.3 ENE 104.7 90.6 75.6 65.7 61.3 57.8 51.3 NE 104.7 90.6 75.6 65.7 60.0 53.9 42.1 NNE 104.7 90.6 75.6 65.7 61.3 51.3 51.3 M 104.7 90.6 75.6 65.7 61.3 51.9 38.0 NNW 104.7 90.6 75.6 65.7 61.3 57.8 51.3 NW 104.7 90.6 75.6 40.7 61.3 50.8 51.3 UNW 104.7 90.6 75.6 65.7 61.3 57.8 51.3 104.7 90.6 75.6 59.4 61.3 57.8 46.5 U 104.7 90.6 75.6 65.7 60.3 54.3 27.1 SW 104.7 90.6 75.6 59.8 55.9 50.2 44.9 SSU 104.7 90.6 75.6 57.9 55.5 50.8 45.9 S 104.7 90.6 75.6 60.3 61.3 53.0 51.3 SSE 104.7 90.6 75.6 60.9 61.3 52.4 42.5 SE 104.7 90.6 75.6 60.8 60.0 53.9 36.5 ESE 104.7 90.6 75.6 65.7 61.3 57.8 46.4

DUANE ARNULD 26 AZI MUTH, E 900 890 880 870 860 850 840 830 l 820 810 0

800 790 780 770 760 750

.740 730 720 710 700 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 26 AZIMUTH, ENE 960 940 920 900 880 860 840 820 800 780 760 740

.720 700 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNULD 26 AZIMUTH, NE 900 890 880 870 860 850 840 830 820 810 0

800 790 Ld 780 770 760 750 740 730 720 710 700 O0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 26 AZIMUTH, NNE 900 890 880 870 860 850 840 830 820 810 0

800 790

,q

>i 780 770 760 750 740 730 720 710 700 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 26 AZIMUTH, N 900 890 880 870 860 850 840 830 820 810 0

800 790 Ad 780 770 760 750 740 730 720 710 700 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 26 AZIMUTH, NNW 900 890 880 870 860 850 840 830 L 820 2 810 0

800 790 Id 780 770 760 750 740 730 720 710 700 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT 0

DUANE ARNOLD 26 AZIMUTH, NW 900 890 880 870 860 850 840 830 820 810 0

800 790 780 770 760 750 740 730 720 710 700 O 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 26 AZIMUTH, WNW 900 890 880 870 860 850 840 830 820 i 810 0

F: 800 790 Id 780 770 760 750 740 730 720 710 700 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 26 AZIMUTH, W 900 890 880 870 860 850 840 830 820 810 0 800 790 IIi 780 770 760 750 740 730 720 710 700 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 26 AZIMUTH, WSW 900 890 880 870 860 850 840 830 L 820 810 0 800

> 790 w 780 770 760 750 740 730 720 710 700 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 26 AZI MUTH, SW 960 940 920 900 880 860 L

2 840 0

820 800 780 760 740 720 700 0 2 4 6 8 10 12 (Thousands)

DISTANGE, FT

DUANE ARNOLD 26 AZIMUTH, SSW 960 940 920 900 880 860 840 0 820 800 f:

780 760 740 720 700 680 660 640 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARN71.D 26 AZIMUTH, S 960 940 920 900 880 860 840 L

820 zT 0 800 780 Id 760 740 720 700 680 660 640 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 26 AZIMUTH, SSE 900 890 880 870 860 850 840 830 820 i 810 0

F: 800 790 bi 780 770 760 750 740 730 720 710 700 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNTLD 26 AZIMUTH, SE 900 890 880 870 860 850 840 830 820 810 0

800 Q

790 L4 780 770 760 750 740 730 720 710 700 0 2 4 6 8 10 12 (Thousands)

DISTANGE, FT

DUANE ARNOLD 26 AZIMUTH, ESE 900 890 870 860 850 840 830 820

810 800

> 790 w 780 770 760 750 740 730 720 710 700 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN 926-WS3000 SOURCE*RECEIVER TOPOGRAPHICAL INPUTS ALL BEARINGS ARE WITH RESPECT TO THE NORTH MEASURING CLOCKWISE GRID GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTION 1 500. 90.00 720.00 SOFT NO 0. 0.

2 1000. 90.00 720.00 SOFT NO' 0. 0.

3 2000. 90.00 740.00 SOFT NO 0. 0.

4 4000. 90.00 720.00 SOFT NO 0. 0.

5 6000. 90.00 820.00 SOFT NO 0. 0.

6 8000. 90.00 840.00 SOFT YES 6550. 840.

12000. 90.00 740.00 SOFT YES 8400. 850.

500. 67.50 720.00 SOFT NO 0. 0.

1000. 67.50 720.00 SOFT NO 0. 0.

10 2000. 67.50 720.00 SOFT NO 0. 0.

11 4000. 67.50 790.00 SOFT NO 0. 0.

12 6000. 67.50 870.00 SOFT YES 5900. 870.

13 8000. 67.50 850.00 SOFT YES 5900. 870.

14 12000. 67.50 780.00 SOFT YES 8800. 930.

15 500. 45.00 720.00 SOFT No 0. 0.

16 1000. 45.00 720.00 SOFT NO 0. 0.

17 2000. 45.00 720.00 SOFT NO 0. 0.

18 4000. 45.00 830.00 SOFT YES 3450. 830.

19 6000. 45.00 860.00 SOFT YES 4675. 870.

20 8000. 45.00 870.00 SOFT YES 6200. 890.

21 12000. 45.00 800.00 SOFT YES 6200. 890.

22 500. 22.50 720.00 SOFT MO 0. 0.

23 1000. 22.50 720.00 SOFT NO 0. 0.

24 2000. 22.50 720.00 SOFT No 0. 0.

25 4000. 22.50 820.00 SOFT YES 3000. 830.

26 6000. 22.50 870.00 SOFT NO 0. 0.

27 8000. 22.50 850.00 SOFT YES 6000. 870.

28 12000. 22.50 850.00 SOFT YES 6000. 870.

29 500. .00 720.00 SOFT NO 0. 0.

30 1000. .00 720.00 SOFT NO 0. 0.

31 2000. .00 720.00 SOFT NO 0. 0.

32 4000. .00 860.00 SOFT NO 0. 0.

33 6000. .00 850.00 SOFT YES 4000. 860.

34 8000. .00 820.00 SOFT YES 6300. 890.

35 12000. .00 800.00 SOFT YES 6300. 890.

500. 337.50 720.00 SOFT NO 0. 0.

GRID GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTION 37 1000. 337.50 720.00 SOFT 0. NO 0. 0.

38 2000. 337.50 735.00 SOFT 0. NO 0. De 39 4000. 337.50 730.00 SOFT 0. YES 2900. 830.

40 6000. 337.50 800.00 SOFT 0. YES 2900. 830.

41 8000. 337.50 770.00 SOFT 0. YES 2900. 830.

42 12000. 337.50 850.00 SOFT 0. YES 2900. 830.

43 500. 315.00 720.00 SOFT 0. NO 0. - 0.

44 1000. 315.00 720.00 SOFT 0. NO 0. 0.

45 2000. 315.00 720.00 SOFT 0. MO 0. 0.

46 4000. 315.00 860.00 SOFT 0. NO 0. 0.

47 6000. 315.00 840.00 SOFT 0. YES 4100. 87 48 8000. 315.00 870.00 SOFT 0. YES 4100. 84 49 12000. 315.00 730.00 SOFT 0. YES 4100. 8 50 500. 292.50 720.00 SOFT 0. NO 0. 0.

51 1000. 292.50 720.00 SOFT 0. NO 0. 0.

52 2000. 292.50 725.00 SOFT 0. NO 0. 0.

53 4000. 292.50 830.00 SOFT 0. YES 2900. 820.

54 6000. 292.50 820.00 SOFT 0. YES 5000.- 860 55 8000. 292.50 775.00 SOFT 0. YES 5000. 860.

56 12000. 292.50 760.00 SOFT 0. YES 5000. 860.

57 500. 270.00 720.00 SOFT 0. NO 0. 0.

58 1000. 270.00 720.00 SOFT 0. NO 0. 0.

59 2000. 270.00 720.00 SOFT 0. NO - 0. 0.

60 4000. 270.00 738.00 SOFT 0. NO 0. 0.

61 6000. 270.00 750.00 SOFT 0. NO 0. 0.

62 8000. 270.00 735.00 SOFT 0. YES 5000. 750.

63 12000. 270.00 750.00 SOFT 0. YES 11050. 760.

64 500. 247.50 725.00 SOFT 0. No 0. 0.

65 1000. 247.50 730.00 SOFT 0. NO 0. 0.

66 2000. 247.50 720.00 SOFT 0. NO 0. 0.

67 4000. 247.50 720.00 SOFT 0. NO 0. 0.

68 6000. 247.50 720.00 SOFT 0. NO 0. 0.

69 8000. 247.50 730.00 SOFT 0. NO 0. 0.

70 12000. 247.50 755.00 SOFT 0. YES 8650. 810.

71 500. 225.00 732.00 SOFT 0. NO 0. 0.

72 1000. 225.00 750.00 SOFT 0. NO 0. 0.

I

GRID GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTION 73 2000. 225.00 790.00 SOFT 0. NO 0. 0.

74 4000. 225.00 850.00 SOFT 0. NO 0. 0.

75 6000. 225.00 860.00 SOFT 0. YES 5400. 900.

76 8000. 225.00 830.00 SOFT 0. YES 5400. 900.

77 12000. 225.00 810.00 SOFT 0. YES 5400. 900.

78 500. 202.50 735.00 SOFT 0. NO 0. 0.

79 1000. 202.50 760.00 SOFT 0. NO 0. 0.

80 2000. 202.50 770.00 SOFT 0. YES 1500. 830.

81 4000. 202.50 880.00 SOFT 0. YES 2700. 850.

82 6000. 202.50 880.00 SOFT 0. YES 4000. 880.

83 8000. 202.50 840.00 SOFT 0. YES 6300. 900.

12000. 202.50 800.00 SOFT 0. YES 6300. 900.

500. 180.00 730.00 SOFT 0. NO 0. 0.

1000. 180.00 755.00 SOFT 0. No 0. 0.

87 2000. 180.00 810.00 SOFT 0. YES 1750. 830.

88 4000. 180.00 890.00 SOFT 0. NO 0. 0.

89 6000. 180.00 790.00 SOFT 0. YES 4000. 890.

90 8000. 180.00 830.00 SOFT 0. YES 4000. 890.

91 12000. 180.00 850.00 SOFT 0. YES 4000. 890.

92 500. 157.50 725.00 SOFT 0. NO 0. 0.

93 1000. 157.50 740.00 SOFT 0. NO 0. 0.

94 2000. 157.50 770.00 SOFT 0. NO 0. 0.

95 4000. 157.50 850.00 SOFT 0. NO 0. 0.

96 6000. 157.50 800.00 SOFT 0. YES 4700. 880.

97 8000. 157.50 820.00 SOFT 0. YES 4700. 880.

98 12000. 157.50 750.00 SOFT 0. YES 4700. 880.

99 500. 135.00 730.00 SOFT 0. go 0. 0.

100 1000. 135.00 750.00 SOFT 0. NO 0. 0.

101 2000. 135.00 750.00 SOFT 0. NO 0. 0.

102 4000. 135.00 815.00 SOFT 0. - NO 0. 0.

103 6000. 135.00 850.00 SOFT 0. YES 5600. 860.

104 8000. 135.00 800.00 SOFT 0. YES 5600. 860.

105 12000. 135.00 730.00 SOFT 0. YES 5600. 860.

106 500. 112.50 725.00 SOFT 0. NO 0. 0.

107 1000. 112.50 730.00 SOFT 0. NO 0. 0.

108 2000. 112.50 790.00 SOFT 0. NO 0. 0.

109 4000. 112.50 760.00 SOFT 0. YES 3600. 800.

110 6000. 112.50 760.00 SOFT 0. YES 3600. 800.

111 8000. 112.50 720.00 SOFT 0. YES 3600. 800.

112 12000. 112.50 720.00 SOFT 0. YES 3600. 800.

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #26-WS3000 NOISE SOURCE POWER LEVEL INPUT INDEX SOURCE DSA DBC 31.5 63 125 250 500 1000 2000 4000 8000 (9z)

I DUANE - WS3000 158.1 158.0 .0 .0 .0 .0 147.0 157.0 149.0 141.0 124.0 X0= .00 YOM .00 Z0 772.00 HEIGHT ABOVE GROUND= 52.00 IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #26-WS3000 METEOROLOGICAL INPUT CONDITIONS Hi1 10.67 METERS H2= 50.29 METERS WIND WIND SPEED(MPS) TEMPERATURE(C) RELATIVE BAROMETRIC YEAR SEASON MONTH DATE HOUR DIRECTION HI H2 Hi H2 HUMIDITY PRESSURE(MM OF HG) 8 21 12 177.0 2.1 2.6 23.9 23.2 30.0 742.0

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #26-WS3000 SOUND PRESSURE LEVELS IN DBC UNDER MET CONDITION 1 DISTANCE IN FEET AZIMUTH 500. 1000. 2000. 4000. 6000. 8000. 12000.

E 104.7 90.6 75.6 65.7 61.3 52.2 38.0 ENE 104.7 90.6 75.6 65.7 56.3 48.8 34.5 NE 104.7 90.6 75.6 60.1 51.6 44.4 29.2 NNE 104.7 90.6 75.6 57.9 61.3 48.8 42.1 N 104.7 90.6 75.6 65.7 52.5 43.8 38.4 NNW 104.7 90.6 75.6 48.8 51.7 47.1 43.4 NW 104.7 90.6 75.6 65.7 50.3 48.6 37.4 WNW 104.7 90.6 75.6 60.6 49.3 44.5 39.1 W 104.7 90.6 75.6 65.7 61.3 57.8 46.0 WSW 104.7 90.6 75.6 65.7 60.3 54.3 33.7 SW 104.7 90.6 75.6 65.7 47.6 44.0 37.9 SSW 104.7 90.6 58.0 60.7 52.5 44.3 37.8 S 104.7 90.6 62.7 65.7 45.1 44.5 38.9 SSE 104.7 90.6 75.6 65.7 45.6 44.7 33.3 SE 104.7 90.6 75.6 65.7 52.3 41.9 28.9 ESE 104.7 90.6 75.6 52.2 52.8 48.1 43.2

DUANE ARNOLD 28 AZIMUTH, E 1

0.98 0.96 0.94 0.92 0.9 0.88 Z c 0.86 OR

> 0 0.84 tC 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 28 AZIMUTH, ENE 1

0.98 0.96 0.94 0.92 0.9 0.88 L

zc 0.86

>0 0.84 Id 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 28 AZIMUTH, NE 1

0.98 0.96 0.94 0.92 0.9 0.88 Zc 0.86

>0 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNYLD 28 AZIMUTH, NNE 1

0.98 0.96 0.94 0.92 0.9 0.88 L

zc 0.86 0 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 28 AZIMUTH, N 1

0.98 0.96 0.94 0.92 0.9 U) 0.88 Z--a 0.88 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNCLD 28 AZIMUTrH, NNW 1

0.98 0.96 0.94 0.92 0.9 L 0.88

-v zc 0.86 0.84

>2 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT 4.

DUANE ARNOLD 28 AZIMUTH, NW 0.98 0.96 0.94 0.92 0.9 0.88 Z 0.86 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 28 AZIMUTH, WNW 1

0.98 0.96 0.94 0.92 0.9 0.88 zc 0.86 28 0.84

>0 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 28 AZIMUTH, W 1

0.98 0.96 0.94 0.92 0.9 0.88 Z c 0.86 0> 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 28 AZIMUH, WSW 1

0.98 0.96 0.94 0.92 0.9 0.88 Z c 0.86 o

>0 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 28 AZIMUTH, SW 0.98 0.96 0.94 0.92 0.9 0.88 ZT 0.85

>2 0.84 a0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 28 AZIMUTH, SSW 1

0.98 0.96 0.94 0.92 0.9 0.88 0.86

>0 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 .6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 28 AZIMUTH, S 1

0.98 0.96 0.94 0.92 0.9 0.88 Zc 0.86 0.C 0.84 0 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNCVLD 28 AZIMUTH, SSE 1

0.98 0.96 0.94 0.92 0.9 -I I~ 0.88

--U 0.86

>0 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 -I .5 I 1. I I I.

0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 28 AZIMUrH, SE 1

0.98 0.96 0.94 0.92 0.9 L 0.88 0.86 0.84

>2 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 28 AZIMUTH, ESE 1

0.98 0.96 0.94 0.92 0.9 0.88 L

Z c 0.86

>0 0.84 t 0.82 0.8 0.78 0.76 0.74 0.72 0.7 O 2 4 6 8 10 12 (Thousands)

DISTANGE, FT

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #28-FS1003 SOURCE-RECEIVER TOPOGRAPHICAL INPUTS ALL BEARINGS ARE WITH RESPECT TO THE NORTH MEASURING CLOCKWISE GRID GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTION 1 500. 90.00 850.00 SOFT 0. NO 0. 0.

2 1000. 90.00 840.00 SOFT 0. NO 0. 0.

3 2000. 90.00 840.00 SOFT 0. NO 0. 0.

4 4000. 90.00 850.00 SOFT 0. NO 0. 0.

5 6000. 90.00 820.00 SOFT 0. YES 4800. 870.

6 8000. 90.00 830.00 SOFT 0. YES 4800. 870.

7 12000. 90.00 810.00 SOFT 0. YES 4800. 8 8 500. 67.50 850.00 SOFT 0. NO 0.

9 1000. 67.50 830.00 SOFT 0. NO 0. 04 10 2000. 67.50 830.00 SOFT 0. NO 0. 0.

11 4000. 67.50 810.00 SOFT 0. YES 2500. 850.

12 6000. 67.50 850.00 SOFT 0. YES 5250. 860, 13 8000. 67.50 790.00 SOFT 0. YES 5250. 860.

14 12000. 67.50 825.00 SOFT 0. YES 9750. 850.

15 500. 45.00 850.00 SOFT 0. NO 0. 0.

16 1000. 45.00 830.00 SOFT 0. NO 0. 0.

17 2000. 45.00 815.00 SOFT 0. NO 0. C.

18 4000. 45.00 835.00 SOFT 0. NO O4 0.

19 6000. 45.00 850.00 SOFT 0. No 0. 0.

20 8000. 45.00 820.00 SOFT 0. YES 5300. 860.

21 12000. 45.00 845.00 SOFT 0. NO 0. 0.

22 500. 22.50 850.00 SOFT 0. NO 0. 0.

23 1000. 22.50 840.00 SOFT 0. NO 0. 0.

24 2000. 22.50. 840.00 SOFT 0. NO 0. 0.

25 4000. 22.50 835.00 SOFT 0. NO 0. 0.

26 6000. 22.50 860.00 SOFT 0. NO 0. 0.

27 8000. 22.50 863.00 SOFT 0. NO 0. 0.

28 12000. 22.50 870.00 SOFT 0. YES 9000. 880.

29 500. .00 852.00 SOFT 0. NO 0. 0.

30 1000. .00 852.00 SOFT 0. NO 0. 0.

31 2000. .00 850.00 - SOFT 0. NO 0. 0.

32 4000. .00 840.00 SOFT 0. NO 0. 0.

33 6000. .00 848.00 SOFT 0. NO 0. 0.

34 8000. .00 873.00 SOFT 0. NO 0. 0.

35 12000. .00 880.00 SOFT 0. YES 9500. 890.

36 500 .

337.50 853 00 SOFT 0. NO 0. AM

GRID GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTION 37 1000. 337.50 852.00 SOFT 0. NO 0. 0.

38 2000. 337.50 835.00 SOFT 0. NO 0. 0.

39 4000. 337.50 835.00 SOFT 0. NO 0. 0.

40 6000. 337.50 861.00 SOFT 0. NO 0. 0.

41 8000. 337.50 850.00 SOFT 0. No 0. 0.

42 12000. 337.50 850.00 SOFT 0. YES 9000. 870.

43 500. 315.00 852.00 SOFT 0. NO 0. 0.

44 1000. 315.00 842.00 SOFT 0. NO 0. 0.

45 2000. 315.00 820.00 SOFT 0. NO 0. 0.

46 4000. 315.00 827.00 SOFT 0. NO 0. 0.

47 6000. 315.00 852.00 SOFT 0. NO 0. 0.

8000. 315.00 860.00 SOFT 0. NO 0. 0.

12000. 315.00 863.00 SOFT 0. NO 0. 0.

500. 292.50 853.00 SOFT 0. No 0. 0.

51 1000. 292.50 850.00 SOFT 0. NO 0. 0.

52 2000. 292.50 840.00 SOFT 0. NO 0. 0.

53 4000. 292.50 810.00 SOFT 0. NO 0. 0.

54 6000. 292.50 815.00 SOFT 0. No 0. 0.

55 8000. 292.50 845.00 SOFT 0. NO 0. 0.

56 12000. 292.50 850.00 SOFT 0. NO 0. 0.

57 500. 270.00 853.00 SOFT 0. NO 0. 0.

58 1000. 270.00 851.00 SOFT 0. NO 0. 0.

59 2000. 270.00 845.00 SOFT 0. NO 0. 0.

60 4000. 270.00 835.00 SOFT 0. NO 0. 0.

61 6000. 270.00 845.00 SOFT 0. gO 0. 0.

62 8000. 270.00 830.00 SOFT 0. NO 0. 0.

63 12000. 270.00 853.00 SOFT 0. NO 0. 0.

64 500. 247.50 850.00 SOFT 0. NO 0. 0.

65 1000. 247.50 850.00 SOFT 0. NO 0. 0.

66 2000. 247.50 850.00 SOFT 0. NO 0. 0.

67 4000. 247.50 810.00 SOFT 0. NO 0. 0.

68 6000. 247.50 800.00 SOFT 0. NO 0. 0.

69 8000. 247.50 810.00 SOFT 0. NO 0. 0.

70 12000. 247.50 855.00 SOFT 0. NO 0. 0.

71 500. 225.00 852.00 SOFT 0. NO 0. 0.

72 1000. 225.00 840.00 SOFT 0. NO 0. 0.

GRID GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTION 73 2000. 225.00 835.00 SOFT 0. NO 0. 0 74 4000. 225.00 815.00 SOFT 0. NO 0. 0.

75 6000. 225.00 790.00 SOFT 0. NO 0. 0.

76 8000. 225.00 795.00 SOFT 0. YES 7700. 810.

77 12000. 225.00 895.00 SOFT 0. YES 11500. 9so.

78 500. 202.50 850.00 SOFT 0. No 0. 0.

79 1000. 202.50 850.00 SOFT 0. NO 0. 0.

80 2000. 202.50 840.00 SOFT 0. NO 0. 0.

81 4000. 202.50 790.00 SOFT 0. NO 0. .0.

82 6000. 202.50 810.00 SOFT 0. YES 5550. 830.

SOFT 0. YES 5550. 8 83 84 8000.

12000.

202.50 202.50 795.00 740.00 SOFT 0. YES 5550. U 85 500. 180.00 853.00 SOFT 0. No 0.

86 1000. 180.00 853.00 SOFT 0. NO 0. 0.

87 2000. 180.00 830.00 SOFT 0. No 0. 0.

88 4000. 180.00 823.00 SOFT 0. No 0. 0.

89 6000. 180.00 805.00 SOFT 0. YES 5000. 830.

90 8000. 180.00 783.00 SOFT 0. NO 0. 0.

91 12000. 180.00 820.00 SOFT 0. No 0. 0.

92 500. 157.50 853.00 SOFT 0. NO 0. 0.

93 1000. 157.50 846.00 SOFT 0. NO 0. 0.

94 2000. 157.50 830.00 SOFT 0. NO 0. 0.

95 4000. 157.50 845.00 SOFT 0. NO 0. 0.

96 6000. 157.50 810.00 SOFT 0. NO 0. 0, 97 8000. 157.50 830.00 SOFT 0. NO 0. 0.

98 12000. 157.50 790.00 SOFT 0. YES 7700. 830.

99 500. 135.00 853.00 SOFT 0. No 0. 0.

100 1000. 135.00 850.00 SOFT 0. No 0. 0.

101 2000. 135.00 845.00 SOFT 0. NO 0. 0.

102 4000. 135.00 830.00 SOFT 0. YES 2700. 850.

103 6000. 135.00 825.00 SOFT 0. NO 0. 0.

104 8000. 135.00 810.00 SOFT 0. YES 6400. 830.

105 12000. 135.00 845.00 SOFT 0. No 0. 0.

106 500. 112.50 852.00 SOFT 0. NO 0. 0.

107 1000. 112.50 848.00 SOFT 0. NO 0. 0.

108 2000 112.50 850.00 SOFT 0. No 0. 0.

109 4000. 112.50 850.00 SOFT 0. NO 0. 0.

110 6000. 112.50 840.00 SOFT 0. NO 0. 0.

111 8000. 112.50 850.00 SOFT 0. NO 0. 0.

112 12000. 112.50 790.00 SOFT 0. YES 7100. 8i

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #28-FS1003 NOISE SOURCE POWER LEVEL INPUT INDEX SOURCE DBA DBC 31.5 63 125 250 500 1000 2000 4000 8000 (HZ) 1 DUANE

FS1003 160.4 160.3 .0 .0 .0 .0 .0 160.0 148.0 140.0 135.0 XO0 .00 YO= .00 ZO= 894.00 HEIGHT ABOVE GROUND= 39.00 IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #28-FS1003 METEOROLOGICAL INPUT CONDITIONS Hi. 10.67 METERS H2z 50.29 METERS WIND WIND SPEED(MPS) TEMPERATURE(C) RELATIVE BAROMETRIC YEAR SEASON MONTH DATE HOUR DIRECTION Hi H2 Hi H2 HUMIDITY PRESSURE(MM OF HG) 8 21 12 177.0 2.1 2.6 23.9 23.2 30.0 742.0

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #28-FS1003 SOUND PRESSURE LEVELS IN DBC UNDER MET CONDITION 1 DISTANCE IN FEET AZIMUTH 500. 1000. 2000. 4000. 6000. 8000. 12000.

E 107.1 91.4 73.7 55.1 37.1 39.5 35.0 ENE 107.1 91.4 73.7 49.5 43.5 36.0 34.5 ME 107.1 91.4 73.7 54.7 44.7 31.8 25.7 NNE 107.1 91.4 73.7 55.1 48.6 45.4 35.3 NN 107.1 91.4 73.7 55.1 48.6 45.4 35.1 NN 107.1 91.4 73.7 55.1 48.6 45.4 35.0 107.1 91.4 73.7 55.1 48.6 45.4 40.2 WNU 107.1 91.4 73.7 55.1 48.6 45.4 40.2 U

107.1 91.4 73.7 55.1 48.6 45.4 40.2 MSU 107.1 91.4 73.7 55.0 45.1 38.5 26.4 SW 107.1 91.4 73.7 55.1 48.6 37.0 22.5 SSW 107.1 91.4 73.7 55.1 40.2 40.5 35.2 S 107.1 91.4 73.7 55.1 42.5 45.4 40.2 SSE 107.1 91.4 73.7 55.1 48.2 42.6 27.7 SE 107.1 91.4 73.7 50.0 44.7 33.1 25.7 ESE 107.1 91.4 73.7 55.1 48.6 45.4 34.2

DUANE ARNOLD 29 AZIMUTH, E 1

0.98 0.96 0.94 0.92 0.9 0.88 0.86

>0 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, .FT

DUANE ARNOLD 29 AZIMUTH, ENE 1

0.98 0.96 0.94 0.92 0.9 0.88 Zc 0.86 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE )RNOLD 29 AZIMUTH, NE 1

0.98 0.96 0.94 0.92 0.9 0.88 c 0.86

>0 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 29 AZIMUTH, NNE 1

0.98 0.96 0.94 0.92 0.9 0.88 0.86 Zc

>0 0.84 Id 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 29 AZIMUTH, N 1

0.98 0.96 0.94 0.92 0.9 I: ~1 0.88 0.86

>0 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 29 AZIMUTH, NNW 1

0.98 0.96 0.94 0.92 0.9 0.88 0.86

>0 0.84 RdE 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE 7MNOLD 29 AZIMUTH, NW 1

0.98 0.96 0.94 0.92 0.9 0.88 p

Zc 0.86

>0 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 29 AZI MUTH, WNW 1

0.98 0.96 0.94 0.92 0.9 L 9 0.88 0.86 0.84

> 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 29 AZIMUTH, W 1

0.98 0.96 0.94 0.92 0.9 Le 0.88 Zc 0.86

>0 0.84 t 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 29 AZIMUTH, WSW 1

0.98 0.96 0.94 0.92 0.9 4

L

>0 0.88 0.86 0.84 Id 0.82 0.8 0.78 0.76 0.74 0.72 0.7 -I I I I t 1 1 t T I 1 1 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 29 AZIMUTrH, SW 1

0.98 0.96 0.94 0.92 0.9 0.88 0.86

>0 0.84 0.82

.0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 29 AZI MUTH, SSW 1

0.98 0.96 0.94 0.92 0.9 0.88 4 0.86 y V p>M 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 29 0 AZIMUTH, S 1

0.98 0.96 0.94 0.92 0.9 0.88 L

0.86

>0 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 29 AZIMUTH, SSE 1

0.98 0.96 0.94 0.92 0.9 0.88 L

Zc 0.86 O

0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 O 2 4 6 8 10 12 (Thousand's)

DISTANCE, FT

DUANE ARNOLD 29 0

AZIMUTH, SE 1

0.98 0.96 0.94 0.92 0.9 0.88 0.86 Lzc 0.84

]0 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 29 AZIMUTH, ESE 1

0.98 0.96 0.94 0.92 0.9 L 0.88 o~1 0.86 F

0 0.84 Lii 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #29-FS1003 SOURCE*RECEIVER TOPOGRAPHICAL INPUTS ALL BEARINGS ARE WITH RESPECT TO THE NORTH MEASURING CLOCKWISE GRID GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTION 1 500. 90.00 865.00 SOFT 0. NO 0. 0.

2 1000. 90.00 850.00 SOFT 0. NO 0. 0.

3 2000. 90.00 805.00 SOFT 0. NO 0. 0.

4 4000. 90.00 810.00 SOFT 0. NO 0. 0.

5 6000. 90.00 840.00 SOFT 0. NO 0. 0.

6 8000. 90.00 835.00 SOFT 0. NO 0. 0.

12000. 90.00 860.00 SOFT 0. NO 0. 0.

500. 67.50 860.00 SOFT 0. No 0. 0.

1000. 67.50 840.00 SOFT 0. No 0. 0.

10 2000. 67.50 805.00 SOFT 0. NO 0. 0.

11 4000. 67.50 780.00 SOFT 0. NO 0. 0.

12 6000. 67.50 817.00 SOFT 0. NO 0. 0.

13 8000. 67.50 822.00 SOFT 0. NO 0. 0.

14 12000. 67.50 850.00 SOFT 0. No 0. 0.

15 500. 45.00 850.00 SOFT 0. NO 0. 0.

16 1000. 45.00 825.00 SOFT 0. NO 0. 0.

17 2000. 45.00 830.00 SOFT 0. No 0. 0.

18 4000. 45.00 810.00 SOFT 0. NO 0. 0.

19 6000. 45.00 800.00 SOFT 0. No 0. 0.

20 8000. 45.00 800.00 SOFT 0. YES 7300. 820.

21 12000. 45.00 790.00 SOFT 0. NO 0. 0.

22 500. 22.50 850.00 SOFT 0. NO 0. 0.

23 1000. 22.50 845.00 SOFT 0. NO 0. 0.

24 2000. 22.50 850.00 SOFT 0. NO 0. 0.

25 4000. 22.50 785.00 SOFT 0. YES 2750. 840.

26 6000. 22.50 850.00 SOFT 0. NO 0. 0.

27 8000. 22.50 850.00 SOFT 0. YES 7400. 860.

28 12000. 22.50 855.00 SOFT 0. NO 0. 0.

29 500. .00 850.00 SOFT 0. NO 0. 0.

30 1000. .00 840.00 SOFT 0. NO 0. 0.

31 2000. .00 850.00 SOFT 0. NO 0. 0.

32 4000. .00 790.00 SOFT 0. YES 2700. 850.

33 6000. .00 800,00 SOFT 0. NO 0. 0.

34 8000. .00 810.00 SOFT 0. NO 0. 0.

35 12000. .00 840.00 SOFT 0. NO 0. 0.

1 500. 337.50 870.00 SOFT 0. NO 0. 0.

GRID GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTION 37 1000. 337.50 850.00 SOFT 0. NO 0. 0.

38 2000. 337.50 830.00 SOFT 0. NO 0. p.

39 4000. 337.50 840.00 SOFT 0. NO 0. 0.

40 6000. 337.50 850.00 SOFT 0. NO 0. 0.

41 8000. 337.50 870.00 SOFT 0. NO 0. 0.

42 12000. 337.50 870.00 SOFT 0. YES 10000. 890.

43 500. 315.00 870.00 SOFT 0. NO 0. 0.

44 1000. 315.00 870.00 SOFT 0. NO 0. 0.

45 2000. 315.00 845.00 SOFT 0. NO 0. 0.

46 4000. 315.00 800.00 SOFT 0. NO 0. 0.

47 6000. 315.00 830.00 SOFT 0. NO 0. 0.

48 8000. 315.00 830.00 SOFT 0. No 0.

49 12000. 315.00 860.00 SOFT 0. No 0.

50 500. 292.50 870.00 SOFT 0. NO 0.

51 1000. 292.50 860.00 SOFT 0. NO 0. 0.

52 2000. 292.50 860.00 SOFT 0. NO 0. 0.

53 .4000. 292.50 850.00 SOFT 0. No 0. 0.

54 6000. 292.50 820.00 SOFT 0. YES 4900, 850.

55 8000. 292.50 835.00 SOFT 0. NO 0. 0.

56 12000. 292.50 835.00 SOFT 0. NO 0. 0.

57 500. 270.00 860.00 SOFT 0. NO 0. 0.

58 1000. 270.00 850.00 -SOFT 0. NO 0. 0.

59 2000. 270.00 850.00 SOFT 0. NO 0. 0.

60 4000. 270.00 850.00 SOFT 0. No 0. 0.

61 6000. 270.00 840.00 SOFT 0. No 0. 0.

62 8000. 270.00 830.00 SOFT 0. YES 6450. 850.

63 12000. 270.00 810.00 SOFT 0. NO 0. 0.

64 500. 247.50 860.00 SOFT 0. NO 0. 0.

65 1000. 247.50 845.00 SOFT 0. NO 0. 0.

66 2000. 247.50 835.00 SOFT 0. NO 0. 0.

67 4000. 247.50 830.00 SOFT 0. NO 0. 0.

68 6000. 247.50 835.00 SOFT 0. NO 0. 0.

69 8000. 247.50 825.00 SOFT 0. NO 0. 0.

70 12000. 247.50 840.00 SOFT 0. NO 0. 0.

71 500. 225.00 860.00 SOFT 0. NO 0. 0.

72 1000. 225.00 850.00 SOFT 0. NO 0. 0.

GRID GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTION 73 2000. 225.00 840.00 SOFT 0. NO 0. 0.

74 4000. 225.00 820.00 SOFT 0. NO 0. 0.

75 6000. 225.00 820.00 SOFT 0. NO 0. 0.

76 8000. 225.00 800.00 SOFT 0. NO 0. 0.

77 12000. 225.00 800.00 SOFT 0. YES 10000. 820.

78 500. 202.50 855.00 SOFT 0. NO 0. 0.

79 1000. 202.50 850.00 SOFT 0. NO 0. 0.

80 2000. 202.50 840.00 SOFT 0. NO 0. 0.

81 4000. 202.50 835.00 SOFT 0. NO 0. 0.

82 6000. 202.50 800.00 SOFT 0. NO 0. 0.

83 8000. 202.50 820.00 SOFT 0. NO 0. 0.

12000. 202.50 765.00 SOFT 0. NO 0. 0.

500. 180.00 855.00 SOFT 0. NO 0. 0.

1000. 180.00 850.00 SOFT 0. NO 0. 0.

87 2000. 180.00 850.00 SOFT 0. NO 0. 0.

88 4000. 180.00 820.00 SOFT 0. NO 0. 0.

89 6000. 180.00 780.00 SOFT 0. NO 0. 0.

90 8000. 180.00 800.00 SOFT 0. NO 0. 0.

91 12000. 180.00 820.00 SOFT 0. NO 0. 0.

92 500. 157.50 858.00 SOFT 0. No 0. 0.

93 1000. 157.50 855.00 SOFT 0. No 0. 0.

94 2000. 157.50 850.00 SOFT 0. NO 0. 0.

95 4000. 157.50 830.00 SOFT 0. YES 3500. 850.

96 6000. 157.50 790.00 SOFT 0. YES 5000. 860.

97 8000. 157.50 830.00 SOFT 0. No 0. 0.

98 12000. 157.50 790.00 SOFT 0. YES 9500. 910.

99 500. 135.00 870.00 SOFT 0. NO 0. 0.

100 1000. 135.00 860.00 SOFT 0. No 0. 0.

101 2000. 135.00 850.00 SOFT 0. NO 0. 0.

102 4000. 135.00 800.00 SOFT 0. YES 2800. 850.

103 6000. 135.00 800.00 SOFT 0. NO 0. 0.

104 8000. 135.00 810.00 SOFT 0. NO 0. 0.

105 12000.. 135.00 855.00 SOFT 0. NO 0. 0.

106 500. 112.50 880.00 SOFT 0. NO 0. 0.

107 1000. 112.50 860.00 SOFT 0. NO 0. 0.

108 2000. 112.50 850.00 SOFT 0. NO 0. 0.

109 4000. 112.50 800.00 SOFT 0. YES 3000. 850.

110 6000. 112.50 790.00 SOFT 0. YES 4200. 850.

111 8000. 112.50 840.00 SOFT 0. NO 0. 0.

112 12000. 112.50 815.00 SOFT 0. YES 9400. 850.

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #29-FS1003 NOISE SOURCE POWER LEVEL INPUT INDEX SOURCE DBA . DBC 31.5 63 125 250 500 1000 2000 4000 8000 (OZ) 1 DUANE

FS1003 160.4 160.3 .0 .0 .0 .0 .0 160.0 148.0 140.0 135.0 Xo0 .00 YO= .00 ZO= 917.00 HEIGHT ABOVE GROUND= 37.00 IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #29-FS1003 METEOROLOGICAL INPUT CONDITIONS Hl1 10.67 METERS H2= 50.29 METERS WIND WIND SPEED(MPS) TEMPERATURE(C) RELATIVE BAROMETRIC YEAR SEASON MONTH DATE HOUR DIRECTION Hi H2 Hi H2 HUMIDITY PRESSURE(MM OF HG) 1981 8 21 12 177.0 2.1 2.6 23.9 23.2 30.0 742.0

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #29-FS1003 SOUND PRESSURE LEVELS IN OBC UNDER MET CONDITION 1 DISTANCE IN FEET AZIMUTH 500. 1000. 2000. 4000. 6000. 8000. 12000.

E 106.7 91.2 73.5 55.4 47.7 44.4 39.2 ENE 106.6 91.2 73.5 55.4 47.7 44.4 38.9 NE 106.6 91.1 73.5 54.6 43.2 29.8 23.5 NNE 106.6 91.2, 73.5 48.4 47.7 39.1 39.2 N 106.6 91.2 73.5 47.2 47.7 44.4 39.2 NNW 106.7 91.2 73.5 55.4 47.7 44.4 33.4 NW 106.7' 91.2 73.5 55.4 47.7 44.4 39.2 UNW 106.7 91.2 73.5 55.4 41.2 44.4 39.2 W 106.6 91.2 73.5 55.4 47.7 39.5 39.2 WSW 106.6 91.2 73.5 54.8 43.6 36.7 24.3 SW 106.6 91.2 73.5 55.4 47.7 44.4 39.2 SSu 106.6 91.2 73.5 55.4 47.7 44.4 39.2 S 106.6 91.2 73.5 55.4 47.7 44.4 39.2 SSE 106.6 91.2 73.5 48.7 32.3 41.0 14.6 SE 106.7 91.2 73.5 47.3 43.2 36.2 23.6 ESE 106.7 91.2 73.5 46.3 39.6 44.4 33.5

DUANE ARNOLD 31 AZIMUTH, E 960 950 940 930 920 910 900 890 880 L

870 i

0 860 1=

850 840 w 830 820 810 800 790 780 770 760 750 0 2 4 a 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 31 AZIMUTH, ENE 9 60 950 940 930 920 910 900 890 880 870 0 860 I 850 840 830 820 810 800 790 780 770 760 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 31 AZIMUTH, NE 1

0.98 0.96 0.94 0.92 0.9 0.88 Zc 0.86

>2 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 31 AZIMUTH, NNE 1

0.98 0.96 0.94 0.92 0.9 0.88 Z c 0.86

>0 0.84 ti 0.82 0.8 0.78 0.76 0.74 0.72, 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 31 AZIMUTH, N 0.98 0.96 0.94 0.92 0.9 0.88 Z c 0.86

> 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOD 31 AZIMUTH, NNW 960' 950 940 930 920 910 I;:

900 i

0 F 890 880 Id 870 860 850 840 830 820 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 31 AZIMUTH, NW 960 -. r i r r (I

950 940 930 920 910 900 890 Z

0 880 870 860 Li]

850 840 830 820 810 800 790 I I I I I I I I I i i 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNCLD 31 AZIMUTH, WNW 1

0.98 0.96 0.94 0.92 0.9 zc Z c> 0.88

> 0 0.86 0.84 0.82 0.8 0.78 0.76 0.74 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 31 AZIMUTH, W 1

0.98 0.96 0.94 0.92 0.9 0.88 Z

zc 0.86 0 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARN7LD 31 AZIMUTH, WSW 980 940 920 900 880 860 H 820 800 780 760 740 720 0 2 4 6 8 10 12 (Thousands)

DISTANCE, Fr

DUANE ARNOLD 31 AZIMUTH, SW 960 940 920 900 880 860 Z

0 840 820 800 780 760 740 720 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOTD 31 AZIMUTH, SSW 9 60 940 920 900 -~

880 860 840 820 800 780 760 740 720 .

0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 31 AZIMUTH, S 960 940 920 900 880 860 840 820 800 780 760 740 720 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNO5LD 31 AZIMUTH, SSE 960 El 940 920 900 880 860 840 820 800 780 760 740 720 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 31 AZIMUTH, SE 960 940 920 900 880 Z 860 840 820 800 780 760 740 -

0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 31 AZIMUTH, ESE 1

0.98 0.96 0.94 0.92

'0.9 0.88 Z c 0.86 O. 0.84 Id 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #31-FS1003 SOURCE-RECEIVER TOPOGRAPHICAL INPUTS ALL BEARINGS ARE WITH RESPECT TO THE NORTH MEASURING CLOCKWISE GRID GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTION 1 500. 90.00 900.00 SOFT 0. NO 0. 0.

2 1000. 90.00 860.00 SOFT 0. NO 0. 0 3 2000. 90.00 895.00 SOFT 0. NO 0. 0.

4 4000. 90.00 750.00 SOFT 0. YES 1200. 900 5 6000. 90.00 805.00 SOFT 0. NO 0. 0.

6 8000. 90.00 805.00 SOFT 0. NO 0. 0.

7 12000. 90.00 830.00 SOFT 0. NO 0. 0.

8 500. 67.50 890.00 SOFT 0. NO 0.

9 1000. 67.50 850.00 SOFT 0. NO 0.

10 2000. 67.50 820.00 SOFT 0. NO 0. 0.

11 4000. 67.50 770.00 SOFT 0. No 0. 0.

12 6000. 67.50 810.00 SOFT 0. NO 0. 0.

13 8000. 67.50 825.00 SOFT 0. NO 0. 0.

14 12000. 67.50 840.00 SOFT 0. NO 0. 0.

15 500. 45.00 900.00 SOFT 0. NO 0. 0.

16 1000. 45.00 865.00 SOFT 0. NO 0. 0.

17 2000. 45.00 805.00 sOFT 0. NO 0. 0.

18 4000. 45.00 795.00 SOFT 0. NO 0. 0.

19 6000. 45.00 810.00 SOFT 0. NO 0. 0.

20 8000. 45.00 830.00 SOFT 0. NO 0. 0.

21 12000. 45.00 850.00 SOFT 0. NO 0. 0.

22 500. 22.50 910.00 SOFT 0. NO 0. 0.

23 1000. 22.50 860.00 SOFT 0. NO 0. 0.

24 2000. 22.50 825.00 SOFT 0. NO 0. 0.

25 4000. 22.50 815.00 SOFT 0. NO 0. 0.

26 6000. 22.50 800.00 SOFT 0. NO 0. 0.

27 8000. 22.50 830.00 SOFT 0. NO 0. 0, 28 12000. 22.50 810.00 SOFT 0. YES 10500. 830.

29 500. .00 900.00 SOFT 0. NO 0. 0.

30 1000. .00 890.00 SOFT 0. NO 0. 0.

31 2000. .00 825.00 SOFT 0. No .0. 0.

32 4000. .00 825.00 SOFT 0. NO 0. 0.

33 6000. .00 840.00 SOFT 0. NO 0. 0.

34 8000. .00 830.00 SOFT 0. NO .0. 0.

35 12000. .00 855.00 SOFT 0. NO 0. . 0.

36 500. 337.50 910.00 SOFT 0. NO 0. 0.

GRID GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTION 37 1000. 337.50 880.00 SOFT 0. NO 0. 0.

38 2000. 337.50 850.00 SOFT 0. NO 0. 0.

39 4000. 337.50 835.00 SOFT 0. NO 0. 0.

40 6000. 337.50 840.00 SOFT 0. No 0. 0.

41 8000. 337.50 855.00 SOFT 0. NO 0. 0.

42 12000. 337.50 845.00 SOFT 0. NO 0. 0.

43 500. 315.00 910.00 SOFT 0. NO 0. 0.

44 1000. 315.00 905.00 SOFT 0. NO 0. 0.

45 2000. 315.00 890.00 SOFT 0. NO 0. 0.

46- 4000. 315.00 855.00 SOFT 0. NO 0. 0.

47 6000. 315.00 850.00 SOFT 0. NO 0. 0.

8000. 315.00 830.00 SOFT 0. No 0. 0.

12000. 315.00 795.00 SOFT 0. NO 0. 0.

500. 292.50 920.00 SOFT 0. NO 0. 0.

51 1000. 292.50 900.00 SOFT 0. NO 0. 0.

52 2000. 292.50 905.00 SOFT 0. No 0. 0.

53 4000. 292.50 865.00 SOFT 0. YES 2100. 910.

54 6000. 292.50 830.00 SOFT 0. YES 2800. 900.

55 8000. 292.50 850.00 SOFT 0. NO 0. 0.

56 12000. 292.50 760.00 SOFT 0. YES 7300. 850.

57 500. 270.00 910.00 SOFT 0. No 0. 0.

58 1000. 270.00 850.00 SOFT 0. NO 0. 0.

59 2000. 270.00 850.00 SOFT 0. NO 0. 0.

60 4000. 270.00 800.00 SOFT 0. YES 1200. 900.

61 6000. 270.00 800.00 SOFT 0. YES 5000. 860.

62 8000. 270.00 835.00 SOFT 0. NO 0. 0.

63 12000. 270.00 850.00 SOFT 0. YES 11000. 880.

64 500. 247.50 880.00 SOFT 0. NO 0. 0.

65 1000. 247.50 830.00 SOFT 0. NO 0. 0.

66 2000. 247.50 790.00 SOFT 0. YES 1200. 850.

67 4000. 247.50 860.00 SOFT 0. NO 0. 0.

68 6000. 247.50 735.00 SOFT 0. YES 2800. 870.

69 8000. 247.50 735.00 SOFT 0. YES 3600. 860.

70 12000. 247.50 740.00 SOFT 0. YES 10900. 800.

71 500. 225.00 900.00 SOFT 0. NO 0. 0.

72 1000. 225.00 850.00 SOFT 0. NO 0. 0.

GRID GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTIDM 73 2000. 225.00 860.00 SOFT 0. NO 0. 0.

74 4000. 225.00 800.00 SOFT 0. YES 3000. 850.

75 6000. 225.00 735.00 SOFT 0. NO 0. 0.

76 8000. 225.00 790.00 SOFT 0. NO 0. 0.

77 12000. 225.00 820.00 SOFT 0. YES 10500. 870.

78 500. 202.50 905.00 SOFT 0. NO 0. 0.

79 1000. 202.50 900.00 SOFT 0. No 0. 0.

80 2000. 202.50 890.00 SOFT 0. NO 0. 0' 81 4000. 202.50 810.00 SOFT 0. YES 1200. 900, 82 6000. 202.50 730.00 SOFT 0. YES 1200. 900.

83 8000. 202.50 790.00 SOFT 0. NO 0. 0.

84 12000. 202.50 820.00 SOFT 0. YES 8500. 860.

85 500. 180.00 910.00 SOFT 0. No 0.

86 1000. 180.00 900.00 SOFT 0. NO 0.

87 2000. 180.00 850.00 SOFT 0. NO 0. 0.

88 4000. 180.00 840.00 SOFT 0. No 0.

89 6000. 180.00 730.00 SOFT 0. YES 2400. 840.

90 8000. 180.00 730.00 SOFT 0. NO 0. 0.

91 12000. 180.00 730.00 SOFT 0. No 0. 0.

92 500. 157.50 910.00 SOFT 0. NO 0. 0.

93 1000. 157.50 850.00 SOFT 0. NO 0. 0.

94 2000. 157.50 830.00 SOFT 0. NO 0. 0.

95 4000. 157.50 800.00 SOFT 0. YES 300t. 850.

96 6000. 157.50 750.00 SOFT 0. YES 3000. 850.

97 8000. 157.50 730.00 SOFT 0. YES 4200. 850.

98 12000. 157.50 755.00 SOFT 0. NO 0. 0.

99 500. 135.00 915.00 SOFT 0. NO 0. 0.

100 1000. 135.00 890.00 SOFT 0. NO 0. 0.

101 2000. 135.00 840.00 SOFT 0. NO 0. 0.

102 4000. 135.00 780.00 SOFT 0. YES 3100, 830.

103 6000. 135.00 750.00 SOFT 0. NO 0. 0.

104 8000. 135.00 790.00 SOFT 0. NO 0. De 105 12000. 135.00 755.00 SOFT 0. NO 0. 0.

106 500. 112.50 910.00 SOFT 0. NO 0. 0.

107 1000.. 112.50 900.00 SOFT 0. NO 0. 0.

108 2000. 112.50 820.00 SOFT 0. NO 0. 0.

109 4000. 112.50 755.00 SOFT 0. NO 0. 0.

110 6000. 112.50 780.00 SOFT 0. NO 0. 0.

111 8000. 112.50 780.00 SOFT 0. NO 0. 0.

112 12000. 112.50 775.00 SOFT 0. NO 0. 0.

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #31-FS1003 NOISE SOURCE POWER LEVEL INPUT INDEX SOURCE DBA DBC 31.5 63 125 250 500 1000 2000 4000 8000 (HZ) 1 DUANE - FS1003 160.4 160.3 .0 .0 .0 .0 .0 160.0 148.0 140.0 135.0 X0= .00 YO= .00 ZO= 955.00 HEIGHT ABOVE GROUND= 35.00 IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #31-FS1003 METEOROLOGICAL INPUT CONDITIONS Hi 10.67 METERS N2= 50.29 METERS WIND WIND SPEED(MPS) TEMPERATURE(C) RELATIVE BAROMETRIC YEAR SEASON MONTH DATE HOUR DIRECTION Hi H2 Hi H2 HUMIDITY PRESSURE(MM OF HG) 1981 8 21 12 177.0 2.1 2.6 23.9 23.2 30.0 742.0

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #31-FS1003 SOUND PRESSURE LEVELS IN DBC UNDER MET CONDITION 1 DISTANCE IN FEET AZIMUTH 500. 1000. 2000. 4000. 6000. 8000. 12000.

E 106.3 90.9 73.3 50.2 46.7 43.3 38.1 ENE 106.2 90.9 73.2 55.6 46.7 43.3 37.4 NE 106.3 90.9 73.2 54.4 41.6 34.2 21.2 NNE 106.3 90.9 73.2 55.6 46.7 43.3 33.3 N 106.3 90.9 73.2 55.6 46.7 43.3 38.1 NNW 106.3 90.9 73.3 55.6 46.7 43.3 38.1 NU 106.3 91.0 73.3 55.6 46.7 43.3 38.1 WNW 106.3 91.0 73.3 50.8 41.8 43.3 32.6 W 106.3 90.9 73.3 49.9 34.8 43.3 29.5 WSW 106.1 90.8 67.6 54.7 35.1 29.9 9.6 SW 106.3 90.9 73.3 49.1 46.7 43.3 28.0 SSW 106.3 91.0 73.3 49.2 40.8 43.3 33.3 S 106.3 91.0 73.3 55.6 38.4 43.3 38.1 SSE 106.3 90.9 7.? 49.1 40.6 33.6 28.9 SE 106.3 90.9 73.2 48.0 41.6 34.3 21.2 ESE 106.3 91.0 73.2 55.6 46.7 43.3 38.1

DUANE ARN'I .D 32 AZIMUTH, E 1

0.98 0.96 0.94 0.92 0.9 0.88 Zc 0.86 00

>0 0.84 I 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 32 AZIMUTH, ENE 0.98 0.96 0.94 0.92 0.9 0.88 c 0.86 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 .6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 32 AZIMUTH, NE 1

0.98 0.96 0.94 0.92 0.9 0.88 Z 0.86 0.84 Id 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 32 AZIMUTH, NNE 1

0.98 0.96 0.94 0.92 0.9 0.88 Zc 0.86

>0 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARN1ED 32 AZIMUTH, N 1

0.98 0.96 0.94 0.92 0.9 0.88 Zc 0.86

>0 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 32 AZIMUTH, NNW

-1 0.98 0.96 0.94 0.92 0.9 0.88 Z 0.86 0.84 0.82

. 0.8 0.78 0.76 0.74 0.72 0.7 O 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 32 AZIMUTH, NW 1

0.98 0.96 0.94 0.92 0.9 0.88

--v Zc 0.86

>2 0.84 0i

.C 0.82 0.8 0.78 0.76 0.74 0.72 0.7 O 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 32 AZIMUTH, WNW 1

0.98 0.96 0.94 0.92 0.9 0.88 0v 0.86 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 O 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOL AZIMUTH, W 1

0.98 0.96 0.94 0.92 0.9 0.88 zc 0.86

>0 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 32 AZIMUIH, WSW 1

0.98 0.96 0.94 0.92 0.9 0.88 Zc 0.86 30 0.84 Ld 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 32 AZI MUTH, SW 1

0.98 0.96 0.94 0.92 0.9 0.88 Zc 0.86 E

>0 0.84

.CE 0.82

.0.8 0.78 0.76 1-1-z 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 32 AZIMUTH, SSW 1

0.98 0.96 0.94 0.92 0.9 0.88 Ic 0.86 zcO-v 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 32 AZIMUTH, S 1

0.98 0.96 0.94 0.92 0.9 L 0.88

-U zc 0.86

>0 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 32 AZIMUTH, SSE 1

0.98 0.96 0.94 0.92 0.9

-U 0.88 Zc OR 0.86

>0 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 32 AZIMUTH, SE 1

0.98 0.96 0.94 0.92 0.9 0.88 TA

-'v Z c 0.86 D 0.84 0

0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD 32 AZIMUTH, ESE 1

0.98 0.96 0.94 0.92 0.9 0.88 Z c 0.86 09 0.84

>0 Ic 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIRN #32-FS1003 SOURCE-RECEIVER TOPOGRAPHICAL INPUTS ALL BEARINGS ARE WITH RESPECT TO THE NORTH MEASURING CLOCKWISE GRID GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTION 1 500. 90.00 815.00 SOFT 0. NO 0. 0.

2 1000. 90.00 820.00 SOFT 0. NO 0. 0.

3 2000. 90.00 805.00 SOFT 0. NO 0. 0.

4 4000. 90.00 750.00 SOFT 0. YES 1500. 820.

5 6000. 90.00 800.00 SOFT 0. NO 0. 0.

6 8000. 90.00 760.00 SOFT 0. YES 6500. 830.

7 12000. 90.00 835.00 SOFT 0. NO 0. 0.

500. 67.50 810.00 SOFT 0. NO 0. 0.

1000. 67.50 825.00 SOFT 0. NO 0. 0.

2000. 67.50 815.00 SOFT 0. NO 0. 0.

11 4000. 67.50 830.00 SOFT 0. NO 0. 0.

12 6000. 67.50 842.00 SOFT 0. NO 0. 0.

13 8000. 67.50 840.00 SOFT 0. NO 0. 0.

14 12000. 67.50 840.00 SOFT 0. YES 8800. 860.

15 500. 45.00 805.00 SOFT 0. NO' 0. 0.

16 1000. 45.00 820.00 SOFT 0. NO 0. 0.

17 2000. 45.00 832.00 SOFT 0. NO 0. 0.

18 4000. 45.00 815.00 SOFT 0. NO 0. 0.

19 6000. 45.00 845.00 SOFT 0. NO 0. 0.

20 - 8000. 45.00 830.00 SOFT - 0. YES 7100. 880.

21 12000. 45.00 795.00 SOFT 0. YES 7100. 880.

22 500. 22.50 800.00 SOFT 0. NO 0. 0.

23 1000. 22.50 810.00 SOFT 0. NO 0. 0.

24 2000. 22.50 830.00 SOFT 0. NO 0. 0.

25 4000. 22.50 830.00 SOFT 0. NO 0. 0.

26 6000. 22.50 850.00 SOFT 0. NO 0. 0.

27 8000. 22.50 800.00 SOFT 0. YES 7100. 870.

28 12000. 22.50 800.00 SOFT 0. YES 7100. 870.

29 500. .00 798.00 SOFT 0. No 0. 0.

30 1000. .00 805.00 SOFT 0. No 0. 0.

31 2000. .00 822.00 SOFT 0. NO 0. 0.

32 4000. .00 845.00 SOFT 0. NO 0. 0.

33 6000. .00 850.00 SOFT 0. NO 0. 0.

34 8000. .00 800.00 SOFT 0. YES 4400. 850.

35 12000. .00 850.00 SOFT 0. NO 0. 0.

36 500. 337.50 800.00 SOFT 0. NO 0. 0.

GRID GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING -HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTION 37 1000. 337.50 805.00 SOFT 0. No 0. 0.

38 2000. 337.50 825.00 SOFT 0. NO 0. 0.

39 4000. 337.50 818.00 SOFT 0. YES 2600, 840.

40 6000. 337.50 852.00 SOFT 0. gO 0. 0.

41 8000. 337.50 835.00 SOFT 0. YES 6000. 852.

42 12000. 337.50 855.00 SOFT 0. NO 0. 0.

43 500. 315.00 798.00 SOFT 0. - NO 0. 0.

44 1000. 315.00 800.00 SOFT 0. NO 0. 0.

45 2000. 315.00 820.00 SOFT 0. NO 0. 0.

4 46 4000. 315.00 810.00 SOFT 0. YES 2600. 830 47 6000. 315.00 830.00 SOFT 0. NO 0.

48 8000. 315.00 820.00 SOFT 0. YES 6100.

49 12000. 315.00 850.00 SOFT 0. NO 0. O 50 500. 292.50 798.00 SOFT 0. NO 0. 0.

51 1000. 292.50 795.00 SOFT 0. NO 0. 0.

52 2000. 292.50 800.00 SOFT 0. NO 0. 0.

53 4000. 292.50 825.00 SOFT 0. NO 0. 0.

54 6000. 292.50 785.00 SOFT 0.- YES 2900. 830.

55 8000. 292.50 782.00 SOFT 0. YES 2900. 830.

56 12000. 292.50 810.00 SOFT 0. NO 0. 0.

57 500. 270.00 800.00 SOFT 0. NO 0. 0.

58 1000. 270.00 788.00 SOFT 0. NO 0. 0.

59 2000. 270.00 790.00 -SOFT 0. NO 0. 0.

60 4000. 270.00 810.00 SOFT 0. No 0. 0.

61 6000. 270.00 777.00 SOFT 0. YES 4000. 810.

62 8000. 270.00 790.00 SOFT 0. NO 0. a.

63 12000. 270.00 900.00 SOFT 0. YES 11600. 910.

64 500. 247.50 805.00 SOFT 0. NO 0. 0.

65 1000. 247.50 790.00 SOFT 0. NO 0. 0.

66 2000. 247.50 790.00 SOFT 0. NO 0. 0.

67 4000. 247.50 785.00 SOFT 0. NO 0. 0.

68 6000. 247.50 780.00 SOFT 0. NO 0. 0.

69 8000. 247.50 820.00 SOFT 0. NO 0. 0.

70 12000. 247.50 780.00 SOFT 0. YES 9500. 850.

71 500. 225.00 811.00 SOFT 0. No 0. 0.

72 1000. 225.00 800.00 SOFT 0. NO 0. 0.

GRID GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTION 73 2000. 225.00 785.00 SOFT 0. NO 0. 0.

74 4000. 225.00 780.00 SOFT 0. NO 0. 0.

75 6000. 225.00 815.00 SOFT 0. NO 0. 0.

76 8000. 225.00 780.00 SOFT 0. YES 6000. 815.

77 12000. 225.00 730.00 SOFT 0. YES 6000. 815.

78 500. 202.50 814.00 SOFT 0. NO 0. 0.

79 1000. 202.50 800.00 SOFT 0. NO 0. 0.

80 2000. 202.50 800.00 SOFT 0. go 0. 0.

81 4000. 202.50 780.00 SOFT 0. NO 0. 0.

82 6000. 202.50 840.00 SOFT 0. NO 0. 0.

83 8000. 202.50 755.00 SOFT 0. YES 3000. 800.

84 12000. 202.50 755.00 SOFT 0. YES 6000. 840.

500. 180.00 820.00 SOFT 0. NO 0. 0.

1000. 180.00 800.00 SOFT 0. NO 0. 0.

2000. 180.00 818.00 SOFT 0. No 0. 0.

88 4000. 180.00 795.00 SOFT 0. YES 6000. 840.

89 6000. 180.00 780.00 SOFT 0. NO 0. 0.

90 8000. 180.00 810.00 SOFT 0. NO 0. 0.

91 12000. 180.00 787.00 SOFT 0. NO 0. 0.

92 500. 157.50 820.00 SOFT 0. NO 0. 0.

93 1000. 157.50 810.00 SOFT 0. NO 0. 0.

94 2000. 157.50 835.00 SOFT 0. 10 0. 0.

95 4000. 157.50 795.08 SOFT 0. YES 2000. 835.

96 6000. 157.50 820.00 SOFT 0. NO 0. 0.

97 8000. 157.50 840.00 SOFT 0. NO 0. 0.

98 12000. 157.50 860.00 SOFT 0. NO 0. 0.

99 500. 135.00 825.00 SOFT 0. NO 0. 0.

100 1000. 135.00 830.00 SOFT 0. NO 0. 0.

101 2000. 135.00 820.00 SOFT 0. YES 1750. 830.

102 4000. 135.00' 780.00 SOFT 0. YES 1750. 830.

103 6000. 135.00 760.00 SOFT 0. YES 1750. 830.

104 8000. 135.00 750.00 SOFT 0. NO 0. 0.

105 12000. 135.00 740.00 SOFT 0. YES 8900. 780.

106 500. 112.50 820.00 SOFT 0. NO 0. 0.

107 1000. 112.50 820.00 SOFT 0. NO 0. 0.

108 2000. 112.50 820.00 SOFT 0. NO 0. 0.

109 4000. 112.50 810.00 SOFT 0. YES 3700. 820.

110 6000. 112.50 870.00 SOFT 0. NO 0. 0.

111 8000. 112.50 920.00 SOFT 0. NO 0. 0.

112 12000. 112.50 900.00 SOFT 0. YES 8000. 920.

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIRN #32-FS1003 NOISE SOURCE POWER LEVEL INPUT INDEX SOURCE DBA DBC 31.5 63 125 250 500 1000 2000 4000 8000 (HZ) 1 DUANE - FS1003 160.4 160.3 .0 .0 .0 .0 .0 160.0 148.0 140.0 135.0 XON .00 YO= .00 ZO= 849.00 HEIGHT ABOVE GROUND= 37.00 IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIRN #32-FS1003 METEOROLOGICAL INPUT CONDITIONS His 10.67 METERS H2Z 50.29 METERS WIND WIND SPEED(MPS) TEMPERATURE(C) RELATIVE BAROMETRIC YEAR SEASON MONTH DATE HOUR DIRECTION Hi H2 H1 H2 HUMIDITY PRESSURE(MM OF HG) 1981 a 21 12 177.0 2.1 2.6 23.9 23.2 30.0 742.0

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIRN #32-FS1003 SOUND PRESSURE LEVELS IN DBC UNDER MET CONDITION 1 DISTANCE IN FEET AZIMUTH 500. 1000. 2000. 4000. 6000. 8000. 12000.

E 106.7 91.2 73.5 49.8 47.7 30.7 39.2 ENE 106.7 91.2 73.5 55.4 47.7 44.4 32.7 NE 106.7 91.2 73.5 54.6 43.2 21.7 11.8 NNE 106.7 91.2 73.5 55.4 47.7 27.5 28.9 N 106.7 91.2 73.5 55.4 47.7 36.3 39.2 NNW 106.7 91.2 73.5 49.1 47.7 38.3 39.2 NW 106.7 91.2 73.5 50.1 47.7 38.3 39.2 WNW 106.7 91.2 73.5 55.4 41.8 39,4 39.2 106.7 91.2 73.5 55.4 42.2 44.4 31.3 U

106.7 91.2 73.5 54.8 43.6 36.7 12.0 SSW 106.7 91.2 73.5 55.4 47.7 37.5 32.3 SSW 106.7 91.2 73.5 55.4 47.7 38.5 30.6 S 106.7 91.2 73.5 30.4 47.7 44.4 39.2 SSE 106.7 91.2 73.5 48.8 46.8 41.0 30.8 SE 106.7 91.2 66.8 48.5 38.0 36.2 18.1 ESE 106.7 91.2 73.5 48.7 47.7 44.4 30.4

DUANE ARNOLD B AZIMUTH, E 1

0.98 0.96 0.94 0.92 0.9 I: Gi 0.88

-v Zc 0.86

>0 0.84 Id 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNDLD B AZIMUTH, ENE 1

0.98 0.96 0.94 0.92 0.9 0.88 0.86 0.84 0

0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD B AZIMUTH, NE 1

0.98 0.96 0.94 0.92 0.9 OL ic 0.88

>2 0.86 0.84 0.82 0.8 0.78 0.76 0.74 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DU ANE ARNTLD -B AZIMUTH, NNE 1

0.98 0.96 0.94 0.92 0.9 ZC 0.88

>O 0.86 w 0.84 0.82 0.8 0.78 0.76 0.74 0 . 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD B AZIMUTH, N 1

0.98 0.96 0.94 0.92 0.9 Z c 0.88 08 5

0< 0.86 0.84 0.82 0.8 0.78 0.76 0.74 O 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD B AZIMLTH, NNW 1

0.98 0.96 0.94 0.92 0.9 L 0.88 Zc 0.86

>0 0.84 H.C 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD B AZIMUTH, NW 1

0.98 0.96 0.94 0.92 0.9 0.88 Zc 0.86 0

0.84 Ld 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNIOLD B AZIMUTH, WNW 1

0.98 0.96 0.94 0.92 0.9 0.88 (c 0.86

>> 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD B AZIMUTH, W 1

0.98 0.96 0..94 0.92 0.9 0.88 Z c 0.86 O2 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNGYLD B AZIMUTH, WSW 1

0.98 0.96 0.94 0.92 0.9 0.88 0.86

>0 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD B AZIMUTH, SW 1

0.98 0.96 0.94 0.92 0.9 0.88 0.86 0

v5 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD B AZIMUTH, SSW 1

0.98 0.96 0.94 0.92 0.9 IA 0.88 z c 0.86

>0 0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 O 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD B AZIMUTH, S 1

0.98 0.96 0.94 0.92 0.9 0.88 Z 0.86 0>

0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARIrLD B AZIMUTH, SSE 1

0.98 0.96 0.94 0.92 0.9 0.88 0.86 zc 0.84

>0 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNOLD B AZIMUTH, SE 1

0.98 0.96 0.94 0.92 0.9 0.88 0.86

'0 0.84 wt 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

DUANE ARNDL D AZIMUTH, ESE 1

0.98 0.96 0.94.

0.92 0.9 0.88 0.86 L

0.84 0.82 0.8 0.78 0.76 0.74 0.72 0.7 0 2 4 6 8 10 12 (Thousands)

DISTANCE, FT

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #B-WS3000 SOURCE-RECEIVER TOPOGRAPHICAL INPUTS ALL BEARINGS ARE WITH RESPECT TO THE NORTH MEASURING CLOCKWISE GRID GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTION 1 500. 90.00 870.00 SOFT 0. NO 0. 0.

2 1000. 90.00 820.00 SOFT 0. NO 0. 0.

3 2000. 90.00 770.00 SOFT 0. NO 0. 0.

4 4000. 90.00 800.00 SOFT 0. NO 0. 0.

.5 6000. 90.00 835.00 SOFT 0. NO 0. 0.

6 7

8 8000.

12000.

500.

90.00 90.00 67.50 865.00 860.00 880.00 SOFT SOFT SOFT 0.

0.

NO NO NO 0.

0.

1 0.

9 1000. 67.50 815.00 SOFT 0. NO 0. 0.

10 2000. 6750 770.00 SOFT 0. NO 0. 0.

11 4000. 67.50 770.00 SOFT 0. NO 0. 0.

12 6000. 67.50 800.00 SOFT 0. NO 0. 0.

13 8000. 67.50 827.00 SOFT 0. NO 0. 0.

14 12000. 67.50 850.00 SOFT 0. NO 0. 0.

15 500. 45.00 850.00 SOFT 0. NO 0. 0.

16 1000. 45.00 810.00 SOFT 0. NO 0. 0.

17 2000. 45.00 775.00 SOFT 0. NO 0. 0.

18 4000. 45.00 790.00 SOFT 0. NO 0. 0.

19 6000. 45.00 835.00 SOFT 0. YES 5600. 860.

20 8000. 45.00 800.00 SOFT 0. NO 0. 0.

21 12000. 45.00 850.00 SOFT 0. NO 0. 0.

22 500. 22.50 870.00 SOFT 0. NO 0. 0.

23 1000. 22.50 815.00 SOFT 0. No 0. 0.

24 2000. 22.50 780.00 SOFT 0. NO 0. 0.

25 4000. 22.50 825.00 SOFT 0. NO 0. 0.

26 6000. 22.50 855.00 SOFT 0. NO 0. 0.

27 8000. 22.50 840.00 SOFT 0. NO 0. 0.

28 12000. 22.50 805.00 SOFT 0. YES 9000. 840.

29 500. .00 880.00 SOFT 0. NO 0. 0.

30 1000. .00 810.00 SOFT 0. NO 0. 0.

31 2000. .00 795.00 SOFT 0. NO 0. - 0.

32 4000. .00 805.00 SOFT 0. NO 0. 0.

33 6000. .00 820.00 SOFT 0. YES 5800. 830.

34 8000. .00 825.00 SOFT 0. NO 0. 0.

35 12000. .00 780.00 SOFT 0. NO 0. 0.

36 500. 337.50 860.00 SOFT 0. NO 0. A

GRID GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTION 37 1000. 337.50 820.00 SOFT 0. No 0. 0.

38 2000. 337.50 780.00 SOFT 0. NO 0. 0.

39 4000. 337.50 735.00 SOFT 0. NO 0. 0.

40 6000. 337.50 740.00 SOFT 0. gO 0. 0.

41 8000. 337.50 785.00 SOFT 0. No 0. 0.

42 12000. 337.50 730.00 SOFT 0. NO 0. 0.

43 500. 315.00 890.00 SOFT 0. NO 0. 0.

44 1000. 315.00 800.00 SOFT 0. YES 400. 900.

45 2000. 315.00 730.00 SOFT 0. NO 0. 0.

46 4000. 315.00 730.00 SOFT 0. No 0. 0.

47 6000. 315.00 730.00 SOFT 0. NO, 0. 0.

8000. 315.00 730.00 SOFT 0. NO 0. 0.

12000. 315.00 730.00 SOFT 0. No 0. 0.

500. 292.50 895.00 SOFT 0. No 0. 0.

51 1000. 292.50 810.00 SOFT 0. NO 0. 0.

52 2000. 292.50 730.00 SOFT 0. No 0. 0.

53 4000. 292.50 760.00 SOFT 0. NO 0. 0.

54 6000. 292.50 770.00 SOFT 0. NO 0. 0.

55 8000. 292.50 870.00 SOFT 0. NO 0. 0.

56 12000. 292.50 790.00 SOFT 0. YES 8800. 900.

57 500. 270.00 850.00 SOFT 0. NO 0. 0.

58 1000. 270.00 850.00 SOFT 0. YES 750. 870.

59 2000. 270.00 730.00 *SOFT 0. No 0. 0.

60 4000. 270.00 730.00 SOFT 0. NO 0. 0.

61 6000. 270.00 800.00 SOFT 0. NO 0. 0.

62 8000. 270.00 820.00 SOFT 0. NO 0. 0.

63 12000. 270.00 836.00 SOFT 0. NO 0. 0.

64 500. 247.50 820.00 SOFT 0. NO 0. 0.

65 1000. 247.50 860.00 SOFT 0. NO 0. 0.

66 2000. 247.50 730.00 SOFT 0. YES 1000. 860.

67 4000. 247.50 730.00 SOFT 0. No 0. 0.

68 6000. 247.50 770.00 SOFT 0. NO 0. 0.

69 8000. 247.50 750.00 SOFT 0. NO 0. 0.

70 12000. 247.50 770.00 SOFT 0. No 0. 0.

71 500. 225.00 890.00 SOFT 0. NO 0. 0.

72 1000. 225.00 850.00 SOFT 0. NO 0. 0.

I

GRID GROUND FOLIAGE INTERVENING DISTANCE TO HIGHEST HEIGHT OF POINT DISTANCE BEARING HEIGHT TYPE PENETRATION OBSTRUCTIONS OBSTRUCTION FROM SOURCE OBSTRUCTION 73 2000. 225.00 750.00 SOFT 0. NO 0. 0.

74 4000. 225.00 720.00 SOFT 0. NO 0. 0.

75 6000. 225.00 720.00 SOFT 0. NO 0. 0.

76 8000. 225.00 780.00 SOFT 0. NO 0. 0.

77 12000. 225.00 800.00 SOFT 0. NO 0. 0.

78 500. 202.50 890.00 SOFT 0. NO 0. 0.

79 1000. 202.50 840.00 SOFT 0. NO 0. 0.

80 2000. 202.50 760.00 SOFT 0. NO 0. 0.

81 4000. 202.50 790.00 SOFT 0. NO 0. 0.

82 6000. 202.50 720.00 SOFT 0. NO 0. 0.

83 8000. 202.50 760.00 SOFT 0. NO 0. 0.

84 12000. 202.50 800.00 SOFT 0. NO 0. 0.

85 500. 180.00 850.00 SOFT 0. NO 0. 0 86 1000. 180.00 850.00 SOFT 0. NO 0.

87 2000. 180.00 780.00 SOFT 0. No 0.

88 4000. 180.00 820.00 SOFT 0. NO 0. 0.

89 6000. 180.00 735.00 SOFT 0. YES 3000. 850.

90 8000. 180.00 720.00 SOFT 0. No 0. 0.

91 12000. 180.00 810.00 SOFT 0. YES 10500. 870.

92 500. 157.50 900.00 SOFT 0. NO 0. 0.

93 1000. 157.50 820.00 SOFT 0. NO 0. 0.

94 2000. 157.50 820.00 SOFT 0. NO 0. 0.

95 4000. 157.50 860.00 SOFT 0. NO 0. 0 96 6000. 157.50 740.00 SOFT 0. YES 4100. 870, 97 8000. 157.50 720.00 SOFT 0. YES 4100. 870.

98 12000. 157.50 840,00 SOFT 0. YES 9800. 880.

99 500. 135.00 890.00 SOFT 0. NO 0. 0.

100 1000. 135.00 890.00 SOFT 0. NO 0. 0.

101 2000. 135.00 850.00 SOFT 0. NO 0. 0.

102 4000. 135.00 860.00 SOFT 0. NO 0. 0.

103 6000. 135.00 775.00 SOFT 0. YES 3500. 860.

104 8000. 135.00 720.00 SOFT 0. YES 3500. 860.

105 12000. 135.00 840.00 SOFT 0. NO 0. u, 106 500. 112.50 860.00 SOFT 0. NO 0. 0.

107 1000. 112.50 830.00 SOFT 0. NO 0. 0.

108 2000. 112.50 770.00 SOFT 0. NO 0. 0.

109 4000. 112.50 795.00 SOFT 0. NO 0. 0.

110 6000. 112.50 835.00 SOFT 0. NO 0. 0 111 8000. 112.50 860.00 SOFT 0. NO 0. 0.

112 12000. 112.50 870.00 SOFT 0. NO 0. 0.

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #8-WS3000 NOISE SOURCE POWER LEVEL INPUT INDEX SOURCE DBA DBC 31.5 63 125 250 500 1000 2000 4000 8000 (HZ) 1 DUANE - WS3000 158.1 158.0 .0 .0 .0 .0 147.0 157.0 149.0 141.0 124.0

-XO= .00 YO= .00 ZO 955.00 HEIGHT ABOVE GROUND= 55.00 IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #B-WS3000 METEOROLOGICAL INPUT CONDITIONS Hi. 10.67 METERS H2z 50.29 METERS WIND WIND SPEED(MPS) TEMPERATURE(C) RELATIVE BAROMETRIC YEAR SEASON MONTH DATE HOUR DIRECTION Hi H2 Hi H2 HUMIDITY PRESSURE(MM OF HG) 1981 8 21 12 177.0 2.1 2.6 23.9 23.2 30.0 742.0

IOWA ELECTRIC LIGHT AND POWER COMPANY DUANE ARNOLD ANS SIREN #8-WS3000 SOUND PRESSURE LEVELS IN DBC UNDER MET CONDITION 1 DISTANCE IN FEET AZIMUTH 500. 1000. 2000. 4000. 6000. 8000. 12000.

E 104.7 90.8 76.2 66.5 61.8 58.2 51.5 ENE 104.7 90.7 76.2 66.5 61.8 58.2 51.5 NE 104.6 90.7 76.2 66.5 52.7 54.9 43.2 NNE 104.7 90.7 76.2 66.5 61.8 58.2 46.7 m 104.7 90.7 76.3 66.5 56.0 58.2 51.5 NNW 104.6 90.8 76.2 66.5 61.7 58.2 51.5 NW 104.7 84.0 76.2 66.5 61.7 58.2 51.5 WNW 104.7 90.7 76.2 66.5 61.8 58.2 40.9 W 104.6 84.1 76.2 66.5 61.8 58.2 51.5 WSW 104.4 90.9 68.0 66.5 61.2 55.2 43.7 SW 104.7 90.8 76.2 66.5 61.7 58.2 51.5 SSW 104.7 90.8 76.2 66.5 61.7 58.2 51.5 S 104.6 90.8 76.2 66.5 56.9 58.2 41.9 SSE 104.8 90.8 76.3 66.5 49.5 50.3 42.1 SE 104.7 90.9. 76.3 66.5 55.7 49.9 43.2 ESE 104.6 90.8 76.2 66.5 61.8 58.2 51.5

APPENDIX B SAMPLE SIZE DETERMINATION

APPENDIX B SAMPLE SIZE DETERMINATION mber of households that need to be surveyed is determined upon the need to obtain a sample size sufficient to obtain confidence interval with precision (half-width) of 0.05

e estimate of the proportion alerted. The exact number of olds to be surveyed can be derived from the following tical considerations. For relatively large sample sizes 0), taken without replacement from a population (N), the

.ng distribution for proportions (e.g., the proportion of pL on alerted) is nearly a normal distribution, the f Mch is the proportion (p) of the population alerted

e variance of which is

)/n

.s the observed sample proportion, then for a particular ence level with confidence coefficient Zc, 2 2 S o(1 - p)/n(RN for this confidence level, the actual proportion of the ttion alerted satisfies the following inequalities:

2 2 N - n P(1 _ P) N n2 p an-N~) + 2 N _ 1) 2- < p and

+n N-1 1

A second approximation that can be made is to neglect the terms in W2 within the bracket in the numerator. Analysis demonstrates that this underestimates n when P < 1/2 - 1/4 2 + 8W2 or P > 1/2 + 1/4 2 + 8W2 and overestimates n for P between those two values. For the case of interest (a 95% confidence interval with precision of 0.05), this approximation provides an overestimation of n when a sample size greater than 191 is required. Since the sampling plan calls for a minimum sample size of 250, regardless of the value of P, this approximation is acceptable because it also yields an estimate of n larger than the true value. Therefore, for the purposes of the pilot test and subsequent surveys, the following approximate equation can be used to determine whether a sample size larger than 250 is required:

z2 n - P(1 - P) or using 1.96 for Zc and 0.05 for W, n - 1536.64 P(1 - P)

Data from the pilot test can be used to illustrate the effects of these approximations. In the pilot test, the population of tone alert households from which the sample was to be drawn (N) was approximately 4500 and the observed proportion alerted (P) was 0.675. This yields 311 as the exact result for n.

Neglecting the finite population term yields an estimate of 334 for n, and the simplified final approximation estimates n as 338. Thus, the final simplified approximation overestimates the required sample size by 27 in this case.

SOURCE: International Energy Associates Limited. "Analysis of Tone Alert Pilot Test." IEAL-321. September 27, 1983.

3

ML112212164

Text

Navigation menu

Search