OGE Energy Corp. 	 PO Box 321 

Oklahoma City, Oklahoma 73101-0321 

405-553-3000 

www.oge.com 

February 7, 2007 

HAND DELIVERED 

Mr. Phillip Fielder 

Oklahoma Department of Environmental Quality 

Air Quality Division 

P.O. Box 1677 

Oklahoma City, Oklahoma 73101-1677 

RECEIVED
 [~~~::?~ 20~1.] AIR QUALITY 


RE: 	 Revised Best Available Retrofit Technology (BART) Waiver Application 

Oklahoma Gas and Electric Company 

Horseshoe Lake Generating Station Units 7 & 8 

Dear Mr. Fielder: 

On January 23, 2007, OG&E received correspondence from Mr. Terrill requesting additional 

modeling for the Horseshoe Lake Station BART waiver application. Specifically, the letter 

requested the CALPUFF modeling be extended to include receptors at Upper Buffalo - ­

Wilderness and Hercules-Glades Wilderness in order to evaluate source impacts beyond 300­

km. Enclosed are the revised modeling report and one disc containing the modeling 

input/output files. The enclosed modeling demonstrates that Horseshoe Lake Units 7 & 8 do 

not cause or contribute to a significant impairment of visibility in Class I areas within 300 km 

of the source. 

If you have any questions or comments, please contact me at 553-3297. 

Sincerely, 

Melody 

nz~~ Martin 

Air Quality Coordinator 

Enclosures (2) 

cc wlo enclosures: Kimber Shoop 

Chuck Wehland 

IXOS id: 3811 
CALPUFF BART MODELING REPORT • REFINED ANALYSIS 

OKLAHOMA GAS & ELECTRIC COMPANY 

HORSESHOE LAKE GENERAT1NG STATION 

Prepared by: 

Vern Choquette • Principal Consultant 

Don Whitney, PE· Managing Consultant 

Eugene Chen, PE • Senior Consultant 

Jeremy Townley • Consultant 

TRINITY CONSULTANTS 

120 East Sheridan 

Suite 205 

Oklahoma City, OK 73104 

(405) 228-3292 

Februray 6, 2006 

Project 063701.0003 

RECEIVED 


[ FEB 0 7 2007 I 

AIR QUALITY . -~ -"-~--- ..". . --_... 

t t OGlE· TIf).9-1!yl!..
 \jJnsUltants 
• TABLE OF CONTENTS

1. EXECUTIVE SUMMARY •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 1-1 


1.1 BACKGROUND....................................................................................................... 1-1 


1.2 OBJECTIVE ............................................................................................................ 1-1 


1.3 LOCAnON OF SOURCES AND RELEVANT CLASS I AREAS ..................................... 1-2 


1.4 MODEL RESULTS .............................................................................'..................... 1-2 


2. CALPUFF MODELING SYSTEM.......................................................................... 2-1 


2.1 MODEL VERSIONS ................................................................................................. 2-1 


2.2 MODELING DOMAIN ............................................................................................. 2-2 


3. CALMET ............................................................................................................ 3-1 


3.1 GEOPHYSICAL DATA ............................................................................................. 3-1 


3.1.1 TERRAIN DATA ................................................................................................... 3-1 


3.1.2 LAND USE DATA ............. : ................................................................................... 3-1 


3.2 METEOROLOGICAL DATA ................:.................................................................... 3-2 


3.2.1 MESOSCALE MODEL DATA ................................................................................. 3-2 


3.2.2 SURFACE DATA ................................................................................................... 3-2 


• 


3.2.3 UPPER AIR DATA ................................................................................. : .............. 3-3 


3.2.4 PRECIPITATION DATA ......................................................................................... 3-3 


3.3 CALMET PROCESSING CONTROL ........................................................................ 3-4 


~ 4. CALPUFF............................................................................................................. 4-1 


4.1 BART-ELIGIBLE SOURCES ................................................................................... 4-1 


4.2 SOURCE EMISSIONS DATA .................................................................................... 4-1 


4.2.1 PMIO EMISSIONS................ : ................................................................................. 4-2 


4.2.2 STACK PARAMETERS........................................................................................... 4-3 


4.3 RECEPTOR LOCATIONS .......................................................................................... 4-3 


4.4 BACKGROUND OZONE .......................................................................................... 4-5 


4.5 BACKGROUND AMMONIA ..................................................................................... 4-5 


4.6 CALPUFF MODEL CONTROL PARAMETERS ........................................................ 4-6 


5. CALPOST........................................................................................................... 5-1 


5.1 LIGHT EXTINCTION ALGORITHM ........................................................................... 5-1 


5.2 CALPOST PROCESSING METHOD ......................................................................... 5-1 


5.3 NATURAL BACKGROUND ...................................................................................... 5-2 


5.4 EVALUATING BART-EXEMPTION ......................................................................... 5-2 


5.. 5 SUMMARY OF CALPOST CONTROL P ARAMETERS .................................. ............ 5-2 


, 

6. MODEL RESlTLTS ........•.•..................•••••••............••.................••••••........................ 6-1 


• 

APPENDIX A - EMISSION DATA 

Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• APPENDIX B - DATA FILE LIST 

APPENDIX C - MODELING INPUT/OUTPUT FILES 

• 

• ii Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• LIST OF TABLES 

• 


TABLE 2-1. CALPUFF MODELING SYSTEM VERSION NUMBERS ......................................................... 2-1 


TABLE 2-2. VERTICAL GRID STRUCTURE ........................................................................................... 2-3 


TABLE 3-1. SUMMARY OF CALMET INPUTS ..................................................................................... 3-5 


TABLE 4-1. CONSTRUCTION DATE SUMMARy ................................................................................... 4-1 


TABLE 4-2. MAXIMUM EMISSION RATES (24-HOUR AVERAGE) ........................................................4-2 


TABLE 4-3. SPECIATED PM10 EMISSIONS .......................................................................................... 4-2 


TABLE 4-4. POINT SOURCE STACK PARAMETERS ..............................................................................4-3 


TABLE 4-5. SUMMARY OF CALPUFF INPUTS.................................................................................... 4-6 


TABLE 5-1. MONTHLY HUMIDITY FACTORS ...................................................................................... 5-1 


TABLE 5-2. DEFAULT AVERAGE ANNUAL NATURAL BACKGROUND LEVELS ................................... 5-2 


TABLE 5-3. SUMMARY OF CALPOST INPUTS ................................................................................... 5-2 


TABLE 6-1. VISIBLITY IMPACT MODEL RESULTS FROM CANEY CREEK 2001-03 .............................. 6-1 


TABLE 6-2. VISIBLITY IMPACT MODEL RESULTS FROM WIClllTA MOUNTAINS 2001-03 .................. 6-2 


TABLE 6-3. VISIBLITY IMPACT MODEL RESULTS FROM UPPER BUFF ALO 2001-03 ........................... 6-3 . 


TABLE 6-4. VISIBLITY IMPACT MODEL RESULTS FROM HERCULES GLADES 2001-03 ......................6-4 


• Oklahoma Gas & Electric Co. III Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• LIST OF FIGURES 

FIGURE 1-1. LOCATION OF HORSESHOE LAKE STATION AND NEARBY CLASS I AREAS ................... 1-1 


FIGURE 2-1. PROPOSED MODELING DOMAIN ..................................................................................... 2-2 


FIGURE 3-1. PLOT OF MODELING DOMAIN USGS TERRAIN DATA ................................................... 3-1 


FIGURE 3-2. PLOT OF MODELING DOMAIN LULC DATA................................................................... 3-1 


FIGURE 3-3. PLOT OF SURFACE STATIONS ......................................................................................... 3-3 


FIGURE 3-4. PLOT OF PRECIPITATION STATIONS ................................................................................ 3-4 


FIGURE 4-1. CANEY CREEK WILDERNESS RECEPTOR LOCATIONS ....................................................4-3 


FIGURE 4-2. WICHITA MOUNTAINS WILDERNESS RECEPTOR LOCATIONS ......................................... 4-4 


FIGURE 4-3. UPPER BUFFALO WILDERNESS RECEPTOR LOCATIONS ..................................................4-4 


FIGURE 4-4. HERCULES GLADES WILDERNESS RECEPTOR LOCATIONS .............................................4-5
 • 


• iv
 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• 


• 


• 


1. EXECUTIVE SUMMARY 


1.1 BACKGROUND 

On July 1, 1999, the U.S. Environmental Protection Agency (EPA) published the final Regional Haze 

Rule (RHR). The objective of the RHR is to improve visibility in ] 56 specific areas across the United 

States, known as Class I areas. The Clean Air Act defines Class I areas as certain national parks (over 

6,000 acres), wilderness areas (over 5,000 acres), national memorial parks (over 5,000 acres), and 

international parks that were in existence on August 7, 1977. 

On July 6, 2005, the EPA published amendments to its 1999 RHR, often called the BART rule, which 

included guidance for making source-specific Best Available Retrofit Technology (BART) 

determinations. The BART rule defines BART-eligible sources as sources that meet the following 

criteria: 

(1) Have potential emissions of at least 250 tons per year of a visibility-impairing pollutant, 

(2) Were "in existence" between August 7, 1962 and August 7, 1977, and 

(3) Are listed as one of the 26 listed source categories in the guidance. 

A BART-eligible source is not automatically subject to BART. Rather, BART-eligible sources are 

subject-to-BART ifthe sources are "reasonably anticipated to cause or contribute to visibility 

impairment in any federal mandatory Class I area." EPA has determined that sources are reasonably 

anticipated to cause or contribute to visibility impairment if the visibility impacts from a source are 

greater than 0.5 deciviews (dv) when compared against a natural background. 

Air quality modeling is the tool that is used to determine a source's visibility impacts. States have the 

authority to exempt certain BART-eligible sources from installing BART controls ifthe results ofthe 

dispersion modeling demonstrate that the source carmot reasonably be anticipated to cause or 

contribute to visibility impairment in a Class I area. Further, states also have the authority to define 

the modeling procedures for conducting modeling related to making BART determinations. 

To promote consistency between states in the development of BART modeling protocols and to 

harmonize the approaches between adjacent RPOs, CENRAP developed BART Modeling Guidelines 

(December 15,2005). The intent ofthe guidelines is to assist CENRAP states and source operators in 

the development of statewide and source-specific modeling protocols. 

1.2 OBJECTIVE 

The objective of this document is to provide a report summarizing the model results and the modeling 

methods and procedur~s that were followed by Trinity when conducting refined modeling for 

Oklahoma Gas & Electric's (OG&E) Horseshoe Lake Generating Station near Harrah, OK . 

1-1
 Oklahoma Gas & Electric Co. Trinity Consultants 


Refined BART Modeling Report (Horseshoe Lake) 063701,0003 

• 1.3 LOCATION OF SOURCES AND RELEVANT CLASS I AREAS 

OG&E's Horseshoe Lake station is located due north ofHarrah, OK, and is a PSD major source of 

emissions. The facility is an electricity generating station and operates multiple natural-gas fired 

utility boilers. OG&E has identified the sources listed in Appendix A at the Horseshoe Lake station 

as sources that meet the three criteria for being BART-eligible sources. These sources include: 

• HL7, 2,379 MMBtuIhr Boiler, Babcock&Wilcox 

• HL8, 3,960 MMBtulhr Boiler, Combustion Engineering 

A detailed summary of BART-eligibility is included in Section 4.1. Figure 1-1 provides a plot ofthe 

location ofthe Horseshoe Lake station in relation to its neighboring Class I areas. 

An initial modeling report that examined the visibility impact ofthe Horseshoe Lake Station on Class 

I areas within a 30 km radius was submitted to the Oklahoma DEQ on November 30, 2006. In a letter 

dated January 23, 2007, the Oklahoma DEQ requested that the CALPUFF analysis be extended to 

include receptors at the Upper Buffalo and Hercules-Glades Wilderness. The following Table 

contains the four surrounding Class I areas and the distances they are from the Horseshoe Lake 

station. 

• 

Class I Area Name Distance from source (km) 

Caney Creek Wilderness 300 ~ Hercules-Glades Wilderness 398 

Upper Buffalo Wilderness 337 

Wichita Mountains National Wildlife Refuge 157 

1.4 MODEL RESULTS 

Model results from the refined analysis are included in Section 6. The tables in Section 6 indicate 

that the 98th percentile visibility impairment values are below the 0.5 dv threshold described in 

CENRAP's BARTModeling Guidelines (December 15,2005). These results indicate that the 

Horseshoe Lake Station is eligible for a waiver from BART requirements . 

• 1-2 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• • • 

FIGURE 1-1. LOCATION OF HORSESHOE LAKE STATION AND NEARBY CLASS I AREAS 

Note : Horseshoe Lake Station, Class I area, and domain boundary locations presented above are approximations for visual purposes and are not exact. 

I-I Oklahoma Gas & Electric Co. Trinity Consultants 


Refined BART Modeling Report 063701.0003 

• 2. CALPUFF MODELING SYSTEM 

The main components ofthe CAL PUFF modeling system are CAL MET, CALPUFF, and CALPOST. 

CALMET is the meteorological model that generates hourly three-dimensional meteorological fields 

such as wind and temperature. CAL PUFF simulates the non-steady state transport, dispersion, and 

chemical transformation of air pollutants emitted from a source in "puffs". CALPUFF calculates 

hourly concentrations ofvisibility affecting pollutants at each specified receptor in a modeling 

domain. CALPOST is the post-processor for CALPUFF that computes visibility impacts from a 

source based on the visibility affecting pollutant concentrations that were output by CALPUFF. 

2.1 MODEL VERSIONS 

Earth Tech, Inc. is the primary developer ofthe CALPUFF modeling system and all related programs. 

The versions ofthe CAL PUFF modeling system programs that Trinity used for OG&E's modeling 

are listed in Table 2-1. Table 2-1 also compares the program versions that Trinity used with the 

program versions recommended by CENRAP. Note that some ofthe program versions are not the 

same as the program versions recommended by CENRAP. Certain programs are being utilized in 

order to avoid data compatibility issues with previous versions ofthe CALPUFF system. Trinity used 

the following software version numbers listed below. Model selection was primarily driven by a 

• 

desire to utilize the most recent release ofCAL MET. CALPUFF and CALPOST executable versions 

were then selected as appropriate for compatibility . 

TABLE 2-1. CALPUFF MODELING SYSTEM VERSION NUMBERS 

Program CENRAP Suggested 

Version 

TERREL 3.3 II 

CTGCOMP 2.42 

CTGPROC 2.42 

MAKEGEO 2.22 

~ 2.4 

5.53a 

CALPUFF 5.711a 

POSTUTIL 1.4 

CALPOST 5.51 

Level 

030709 

030709 

030709 

030709 

050413 

040716 

040716 

040818 

030709 

Horsehoe Lake 

Refined Analysis 

Version Level 

3.311 030709 

2.22 030528 

2.42 030709 

2.22 030709 

2.4 050413 

6.211 060414 

6.112 060412 

1.4 040818 

6.131 060410 

Reason for Difference 

Version recommended is not 

available 

Most recent release of 

CALMET 

Use version compatible with 

CALMET v6.211 

Use version compatible with 

CALPUFF 6. 112 

• 2-1 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report 063701.0003 
• 


2.2 MODELING DOMAIN 

Trinity utilized a modeling domain that extends at least 50 km in all directions beyond the Horseshoe 

Lake Station and each of its surrounding Class I areas. Note that while Upper Buffalo and HerculesGlades are included in the domain, these Class I areas are more than 300 km from the Horseshoe 

Lake Station. The map projection for the modeling domain is Lambert Conformal Conic (LCC) and 

the coordinate system will be North American Datum 1927 (NAD27), which is an LCC projection. 

The meteorological grid spacing is 3 km. 

The southwest corner ofthe modeling domain is Latitude 34.00oN, Longitude 100.5°W which was 

assigned as the 0, 0 reference point for the domain. The northeast corner of the modeling domain is 

approximately Latitude 37.25°N, Longitude 92°W. At a grid spacing of3 km, the number of X grid 

cells is 256 and the number ofY grid cells will be 155. 

Figure 2-1 provides a plot of the modeling domain with respect to the sources and Class I are~s. 

• 

550 

500 

450 

400 

350 

~ E300 

<.> 

'f! 

~ 250 

E 

€ 

8 200 

W 

§150 

100 

50 

0 

·50 

I 

FIGURE 2-1. PROPOSED MODELING DOMAIN 

JOplitMO 

Hercules·Glades • 

OG&E.Ho."hae.Lake.PlaIlt 

$, OklahomaC,!y.OK 

Norm'".OK 

I 

I 

I 

·50 0 50 100 150 200 250 300 350 400 450 500 550 600 650 700 750 800 

lambert Conformal Conic (X) (km) 

• 2-2 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report 063701.0003 
• For the purposes ofthis analysis, the CALMET and CAL PUFF domains are identical for each 

analysis and are singularly referred to herein as the "domain." 

The horizontal domain is comprised of grid cells, each containing a central grid point at which 

meteorological and computational parameters are calculated at each time step. For this analysis, grid 

. spacing intervals of 3 km were selected to resolve terrain features within the domain. Table 2-2 

summarizes the vertical grid structure selected for both analyses. The cell face height of each cell 

indicates its vertical extent. The vertical domain is also composed ofterrain-following grid cells, the 

number and size ofwhich are chosen so as to constrain the boundary layer in which dispersion and 

chemical transformations take place. 

TABLE 2-2. VERTICAL GRIn STRUCTURE 

Cell Face Height 

Vertical Grid Cell (meters) 

• 

1 20 

2 40 

3 80 

4 160 

5 320 

6 640 

7 1,200 

8 2,000 

9 3,000 

10 4,000 

• 2-3 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report 063701.0003 
• 3. CALMET 

• 


Trinity conducted a three-year CALMET analysis incorporating both mesoscale model and 

observation meteorological data to generate three years of CALMET outputs to be used as inputs to 

CALPUFF. The CALMET model requires the input of geophysical data, meteorological data, and 

model parameter settings. The CALMET modeling procedures that Trinity is proposing to use 

generally follow the recommendations in CENRAP's protocol. It should be noted that Trinity used 

surface and precipitation data but not upper air observations in this CALMET analysis. As a result, 

some ofCENRAP's recommendations may not apply. 

3.1 GEOPHYSICAL DATA 

CAL MET requires geophysical data to characterize the terrain and land use parameters that 

potentially affect dispersion. Terrain features affect flows and create turbulence in the atmosphere 

and are potentially subjected to higher concentrations of elevated puffs. Different land uses exhibit 

variable characteristics such as surface roughness, albedo, Bowen ratio, and leaf-area index that also 

effect turbulence and dispersion. 

3.1.1 TERRAIN DATA 

Trinity used terrain data obtained from the United States Geological Survey (USGS) in 1­

degree (l:250,000 scale or approximately 90 meter resolution) digital format. A list ofthe 

USGS terrain files that were used is provided in Appendix B. A plot ofthe land elevation 

for the modeling domain based on the referenced files is provided in Figure 3-1 . 

• 3-1 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report 063701.0003 
• • ·-1

....

.. 

£b 

~ '-' 

i

.. 

....1 34 

33 

LorgiI:ude (dtge ts W) 

FIGURE 3-1. PLOT OF MODELING DOMAIN USGS TERRAIN DATA 

Ururs (Above MSL) 

3-1
 OG&E Electric Services Trinity Consultants 


Refined BART Modeling Report 063701.0003 

• Trinity input the USGS terrain data into the TERREL program to generate grid-cell 

400 

C 

t: 300 c.> 

·c 

0 

u • ii

E 

E 

oS 

c: 200 0 

u 

t: 

IV 

.rJ 

E 

...J '" 

100 

• 


elevation averages across the modeling domain. 

3.1.2 LAND USE DATA 

Trinity used USGS Composite Theme Grid (CTG) format Land Use and Land Cover 

(LULC) data files at 1 :250,000 resolutions. Where 1 :250,000 land use data is not 

available, Trinity used USGS data at I: 100,000 resolutions. A list of the USGS land use 

files that were used is provided in Appendix B. A plot ofLULC data over the modeling 

domain is presented in Figure 3-2below. 

FIGURE 3-2. PLOT OF MODELL'IG DOMALN LULC D ATA 

90 

600 700 

0 

10 = Urban 50 =Water 

20 = Agncu Itural Lana 60 =Wetland 

30 =Rangeland 70 = Barren Land 

40 = Forest Land 80 = Tundra 

90 =Perennial Snow or Ice 

Trinity input the LULC data into the CTGPROC program to generate land use for each grid 

cell across the modeling domain. Since the USGS CTG format LULC data files must be 

compressed prior to use in the CTGPROC utility processor, Trinity compressed the files 

using the program CTGCOMP . 

• 

, 

. .

.*.: 

o -...-.--'--......... o 100 200 300 400 500 

Lambert Confonnal Conic (X) (km) 

3-1
 Oklahoma Gas & Electric Co. Trinity Consultants 


Refined BART Modeling Report (Horseshoe Lake) 063701.0003 

• 3.2 METEOROLOGICAL DATA 

CALMET was used to assimilate data for 2001,2002, and 2003 using mesoscale model output and 

National Weather Service (NWS) surface station observations, upper air station observations, and 

precipitation station observations to develop the meteorological field. 

3.2.1 MESOSCALE MODEL DATA 

Hourly mesoscale data was used to supplement the hourly surface, upper air, and 

precipitation observation data. The mesoscale data was used to define the initial guess 

field for the CALMET simulations. Trinity used the following 5th generation mesoscale 

model meteorological data (or MM5 data): 

• 2001 MM5 data (12 km resolution), 

• 2002 MM5 data (36 km resolution), and 

• 2003 MM5 data (36 km resolution) 

3.2.2 SURFACE DATA 

• 

The use of multiple stations for meteorological observations in CALMET/CALPUFF 

provides a substantial enhancement over the steady-state treatment of observations from a 

single meteorological station. Parameters affecting turbulent dispersion that are observed 

hourly at surface stations include wind speed and direction, temperature, cloud cover and 

ceiling, relative humidity, and precipitation type. Surface data were extracted from among 

the surface stations listed in Appendix B and are illustrated in Figure 3-3. These sources 

were selected from the available data inventory to optimize spatial coverage and 

representation ofthe domain. Raw observations from these stations were obtained from 

the National Climatic Data Center (NCDC), quality assured and were merged using the 

SMERGE pre-processor to create a single assimilated data file of surface observations for 

each year analyzed . 

• 3-2 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• 


• 


• 

• 	 FIGURE 3-3. PLOT OF SURFACE STATIONS 

500 

450 

400 

350 

~ E 300 u 

.~ 

0 

~ 250 

§ 

§ 200 

t! 

OJ 

.Q 

~ 150 ...J 

100 

• 

50 

0 

-50 

-50 

3.2.3 

3.2.4 

KCNU KI<!iiAfj . . . KPFF 	 KSGF :-------------- KP2fI --------~~---------

I • KCFI' 

I 

Hercules-<llades 

• KFLP K"!f'G KHRO . KSLG KGfG ~S\NO . KFIIV

KMKO 

OG&E tfDrsIaIhoe LaI<e Plant 

~oKISTIK. - ­ KFS1i4 . 	 I KCSM . . . K0,!JN 	 Ku/F 

KHBR 	 KU~• I 

WiChita_MountaiJ KLPlN I	 • KCOS 

I .. Kt;>R 

I 

I KSfS 

I 	 KF39 . KPRX . KTXK 

KEI.D 

_ _ _ _ _ _ _ _ _ _ KDTO K..!,KI_ 

o 	 50 100 150 200 250 300 350 400 450 500 550 600 650 700 750 800 

Lambert ConformaJ Conic (X) (km) 

UPPER AIR DATA 

Upper air observations were not used in this CALMET analysis (Le., NOOBS = 1). 

PRECIPITATION DATA 

The effects of chemical transformations and deposition processes on ambient pollutant 

concentrations was considered in this analysis. Therefore, it is necessary to include 

observations of precipitation in the CALMET analysis. The precipitation stations from 

which Trinity extracted data are listed in Appendix B. The locations ofthe precipitation 

stations with respect to,the modeling domain are shown in Figure 3-4. These stations were 

selected from the available data inventory to optimize spatial coverage and representation 

of the domain. Data from the stations was processed for use in CALMET using Version 

5.31, Level 030528 of EPA's PMERGE program . 

• 	 3-3 Oklahoma Gas & Electric Co. 	 Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 	 063701.0003 
• 550 

500 

450 

400 

350 

~ E 300 u 

'E: 

0 

~ 250 E 

~ 

8200 

t:: 

Q) 

0 

~ 150 

100 

• 

50 

0 

-50 

FIGURE 3-4. PLOT OF PRECIPITATION STATIONS 

. lOLA; uc~ I'" - - o6DGT - - - - - ... - - - - -C!;ANt;r - - - ­ WICHlT I

SUEleT I 

I ~~a I 

. \NEST 

BN<'TLE NOWATA IRlvERS GR~AT poNcA 


I WAYNoK 
 PwJNEE 

sa~ TuLsAt fAYeTT

M:'R'S6l>ilt.W OILTON UppEr'_BUl'faJo

. GllSeR 

OG&ICHoIW:i1boe_La1:e_Plant ,PMTHE STPAU BCTKINI. 

MUsKOG GR~ERS CLMKS 

GEMI' FORT S I 

• . P.eM~A OKEMA'1 

ELK CI ~O I 

I , I I CHICKA 

J 

WiChita_Mountalnsl '''H~OD W~RO BRloos; ....uM:tlAijAH

MCALE$lENGAL 

Caa~I!.Creek MO~TlKEL I • , , \I\I1CHIT rlNE B i'IJIIOBN<T LEHloH DUNCAN ~I:..t... NAR~"-'RKAoE I CHILoR C.oNE I' D~'(JfIe"S )\f<ffOiN I 

I MOMOR I 

• I WlCHlT CAMDE~

EL~&ION 

-50 o 50 100 150 200 250 300 350 400 450 500 550 600 650 700 750 800 

Lambert Conformal Conic (X) (I<m) 

3.3 CALMET PROCESSING CONTROL 

Table 3-1 provides a listing ofthe CALMET parameters that Trinity used in OG&E's modeling 

analysis. Tn addition to the parameters that were used for OG&E's modeling, the table also lists 

CENRAP's recommended parameters for comparison. In cases where a parameter to be used is 

different than what CENRAP recommended, a short explanation as to the difference is proved. Note 

that most ofthe differences from CENRAP's recommended parameters are due to the inclusion of 

observation data into the modeling analysis, since CENRAP's parameters are based on a noobservation analysis . 

• 3-4 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• TABLE 3-1. SUMMARY OF CALMET INpUTS 

• 

CALMET Variable Description 

udedin Protocol 

Value Trinity 

Will Use Notes 

NUSTA Number of upper air 

data sites 

0 0 Only surface and 

precipitation 

observations were 

used 

NOWSTA Number of overwater 

data sites 

0 0 

IBYR Starting year 2001 Appropriate 

met year 

Years 2001, 2002, 

2003 

IBMO Starting month 1 Appropriate 

month 

Due to file size, 

analysis was 

completed by month 

IBHR Starting hour I I 

Base time zone 6 6 

IRLG Length ofrun 6 Varies with 

month 

Due to file size, 

analysis was 

completed by month 

IRTYPE Run type (l for 

CALPUFF) 

I I 

LCALGRD Compute CALF RID 

data fields (T = run 

CALGRID) 

F F 

ITEST Stop run after SETUP 

to do input QA (2 == 

run) 

2 2 

PMAP Map projection LCC LCC 

RLATO Latitude (decimal 

degrees) of projection 

origin 

40N 33.25N Appropriate for 

domain 

RLONO Longitude (decimal 

degrees) of projection 

origin 

97W lOO.5W Appropriate for 

domain 

XLATl Latitude of 1

51 

standard parallel 

33N 33N Appropriate for 

domain 

XLAT2 Latitude of 2nd 

standard parallel 

45N 40N Appropriate for 

domain 

DATUM Datum region for 

output coordinates 

WGS-G WGS-G Selected datum to 

match datum of 

land use data 

NX Number ofX grid 

cells in 

meteorological grid 

300 256 Appropriate for 

domain

• 3-5 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• 

• 

CALMET Variable Description 

Value Included in 

I 

Value Trinity 

Will Use Notes 

NY Number ofY grid 

cells in 

meteorological grid 

192 155 Appropriate for 

domain 

DGRIDKM Grid spacing (km) 6.0 3.0 Refined grid 

spacing 

XORIGKM Ref. coordinate of 

SW comer of grid 

cell 

-1008 0 Appropriate for 

domain 

YORIGKM Ref. coordinate of 

SW comer ofgrid 

cell 

0.0 0 Appropriate for 

domain 

NZ Number of vertical 

layers 

10 10 

ZFACE Vertical cell face 

heights (NZ + I 

values) 

0,20,40,80, 160, 

320,640,1200,2000, 

3000,4000 

0, 20, 40, 80, 

160,320,640, 

1200,2000, 

3000,4000 

LSAVE Save met. data fields 

in an unformatted 

file? 

T T 

IFORMO Type of unformatted 

output file (l for 

CALPUFF) 

1 1 

LPRINT Print met. fields F F 

IPRlNF Print intervals 1 1 

IUVOUT(NZ) Specify layers ofu,v 

wind components to 

print 

NZ·O NZ·O 

IWOUT(NZ) Specify layers ofw 

wind component to 

print 

NZ·O NZ·O 

ITOUT(NZ) Specify layers of 3D 

temperature field to 

print 

NZ·O NZ·O 

LDB Print met data and 

variables 

F F 

NNl First time step for 

debug data to be 

printed 

I I 

NN2 Last time step for 

debug data to be 

printed 

1 2 Generated debug 

data for a total of 2 

time steps 

IOUm Control variable for 0 0

• 3-6 Oklahoma Gas & Electric Co. Trinity ~onsultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• 

• 

CALMET Variable Description 

Value Included in 

CENRAP Protocol 

Value Trinity 

Will Use Notes 

writing test/debug 

wind fields 

NZPR.N2 Number of levels 

starting at surface to 

print 

0 I Default 

IPRO Print interpolated 

wind components 

0 0 

IPRI Print terrain adjusted 

surface wind 

components 

0 0 

IPR2 Print initial 

diverJ.l:ence fields 

~ 0 

IPR3 Print final wind speed 

and direction 

0 0 

IPR4 Print final divergence 

fields 

0 0 

IPRS Print winds after 

kinematic effects 

0 0 

IPR6 Print winds after 

Froude number 

adjustment 

0 0 

IPR7 Print winds after 

slope flows are added 

0 0 

IPR8 . 

components 

0 0 

NOOBS No observation mode 

(2 No surface, 

overwater, or upper 

air observations; use 

MMS for surface, 

overwater, and upper 

air data) 

2 I Used surface and 

precipitation 

observations 

NSSTA Number of 

meteorological 

stations in 

SURF.DAT file 

0 47 Number ofstations 

NPSTA Number of 

precipitation stations 

in PRECIP.DAT file 

0 203 Number of stations 

ICLOUD Gridded cloud fields 

(0 = no, 3 = Gridded 

cloud cover from 

prognostic relative 

3 0 Use default 

• 3-7 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• 

• 

!-=c1udedin 

CALMET Variable Description P Protocol 

humidity) 

IFORMS Format of surface 2 

data (2 =formatted) 

IFORMP Format of 2 

precipitation data (2 

=formatted) 

IFORMC Format of cloud data 2 

(2 =formatted) 

IWFCOD Generate winds by I 

diagnostic wind 

module? (I = yes) 

IFRADJ Adjust winds using 1 

Froude number 

effects? (1 = yes) 

IKINE Adjust winds using 

kinematic effects? (0 ° = no) - IOBR Use O'Brien 

procedure for vertical ° 

winds? (0 = no) 

ISLOPE Compute slope 1 

flows? (1 =yes) 

IEXTRP Extrapolate surface -1 

winds to upper layers 

(-1 = no extrapolation 

and ignore layer 1 of 

upper air station data) 

ICALM Extrapolate surface 

winds even if calm? ° 

(0 =no) 

BIAS Layer dependent 0,0,0,0,0,0,0,0,0, 

biases weighting aloft 0 

measurements 

RMIN2 Minimum vertical -1 

extrapolation distance 

Distance (km) around 

an upper air site 

where vertical 

extrapolation is 

excluded (set to -1 if 

IEXTRP=±4) 

IPROG Using prognostic or 14 

Value Trinity 

Will Use 

2 

2 

1 

1 

1 

1 

° 

1 

-4 

° 

0,0,0,0,0,0, 

0,0,0,0 

-1 

14 

Notes 

NIA - No cloud data 

used in model 

Computed 

kinematic effects in 

this analysis 

Use default 

• 3-8 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• 

• 

CALMET Variable Description 

Value Included in 

CENRAP Protocol 

Value Trinity 

Will Use Notes 

MM-FDDA data? (14 

Use winds from 

MM5.DAT as initial 

guess wind field) 

ISTEPPG Timestep (hours) of 

the MM5 data 

I I 

LVARY Use varying radius of 

influence to develop 

surface winds? 

T F Use default 

RMAXI Maximum radius of 

influence over land in 

surface layer (km) 

30 , 100 As included in 

IWAQM Phase 2 

case study 

RMAX2 Maximum radius of 

influence over land 

aloft (km) 

30 500 As included in 

IWAQM Phase 2 

case study 

RMAX3 Maximum radius of 

influence over water 

(km) 

50 36 Same as MM5 data 

spacing 

RMIN Minimum radius of 

influence used 

anywhere (km) 

0.1 0.1 

TERRAD Radius of influence 

ofterrain features 

(km) 

12 12 

RI Weighting offirst 

guess surface field 

(km) 

I 50 As included in 

IWAQM Phase 2 

case study 

R2 Weighting offirst 

guess aloft field (km)· 

1 100 As included in 

IWAQMPhase2 

case study 

RPROG MM5 windfield 

weighting parameter 

(km) 

0 0 

DIVLIM Maximum acceptable 

divergence 

5.E-6 5.E-6 

NITER Max number of 

passes in divergence 

minimization 

50 50 

NSMTH Number ofpasses 

through smoothing 

filter in each layer of 

CALMET(NZ 

values) 

2, 4, 4, 4, 4, 4, 4 2, 4, 4, 4, 4, 4, 

4,4,4,4 

\ 

• 3-9 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• 

• 

Value Included in 

CALMET Variable n CENRAP Protocol 

NITR2 Max number of 5,5,5,5,5,5,5,5,5, 

stations used in each 5 

layer for the 

interpolation of data 

to a grid point (NZ 

v,alues) 

CRITFM Critical Froude 1.0 

number 

ALPHA Kinematic effects OJ 

parameter 

FEXTR2 Scaling factor for NZ*O.O 

extrapolating surface 

winds aloft 

NBAR Number ofterrain 0 

barriers 

IDIOTPI Compute temperature 0 

from observations (0 

= true) 

ISURFT Surface station to use 4 

for surface 

temperature (between 

1 and NSSTA) 

IDIOPT2 Domain-averaged 0 

wind component 

switch 

IUPT Station for lapse rates 2 

(between 1 and 

NUSTA) 

ZUPT Depth through which 200 

lapse rate is 

calculated 

IDIOPT3 Domain averaged 0 

wind component 

switch 

IUPWND Upper air station for -1 

domain winds 

ZUPWND Bottom and top of 1., 1000, 

'layer through which 

the domain scale 

winds are computed 

IDIOPT4 Observed surface 0 

wind component 

switch 

Notes 

5, 5, 5, 5, 5, 5, 

5,5,5,5 

1.0 

0.1 

NZ*O.O 

0 

0 

4 

0 

2 

200 

0 

-1 

1., 1000. 

0 

: 

• 3-10 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• 

• 

CALMET Variable Description 

Value Included in 

CENRAP Protocol 

Value Trinity 

Will Use Notes 

IDIOPT5 Observed aloft wind 

component switch 

0 0 

LLBREZE Use lake breeze 

module? 

F F 

NBOX Number oflake 

breeze regions 

0 0 

NLB Number of stations in 

the region 

0 0 

METBXID(NLB) Station IDs in the 

region 

0 0 

CONSTB Neutral stability 

mixing height 

coefficient 

1.41 1.41 

CONSTE Convective stability 

mixing height 

coefficient 

0.15 0.15 

CONSTN Stable stability 

mixing height 

coefficient 

2400 2400 

Overwater mixing 

height coefficient 

0.16 

RIOL Absolute value of 

Corio lis parameter 

I.E-4 I.E-4 

IAVEZI Conduct spatial 

averaging? (l =yes) 

1 1 

MNMDAV Max search radius in 

averaging process 

(number of grid cells) 

10 10 

HAFANG " Half-angle of upwind 

looking cone for 

averaging (degrees) 

30 30 

ILEVZI Layers of wind use in 

upwind averaging 

(between 1 and NZ) 

I 1 

DPTMIN Minimum potential 

temperature lapse rate 

in the stable layer 

above the current 

convective mixing 

height 

0.001 0.001 

DZZI Depth oflayer above 

current convective .. ight 

200 , 200 

• 3-11 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• 

• 

Value Included in 

CALMET Variable Description CENRAP Protocol 

through which lapse 

rate is computed (m) 

ZIMIN Minimum overland 50 

height (m) 

ZIMAX imum overland 3000 

'ng height (m) 

ZIMINW moverwater 50 

height (m) 

ZIMAXW Maximum overwater 3000 

missing height (m) 

ITPROG 3D temperature from 2 

observations or from 

MM5? 

lRAD Type of interpolation 1 

(1 lIr) 

TRADKM Temperature 36 

interpolation radius 

of influence (km) 

NUMTS Max number of 5 

stations for 

temperature 

interpolations 

IAVET Spatially average 1 

temperature? (1 = 

I yes) 

TGDEFB Temperature gradient -.0098 

below the mixing 

height over water 

(KIm) . TGDEFA Temperature gradient -.0045 

above the mixing 

height over water 

(KIm) 

JWATl Beginning land use 55 

categories over water 

JWAT2 Ending land use 55 

categories for water 

NFLAGP Precipitation 2 

interpolation flag (2 = 

l/~) 

SIGMAP Radius of influence 50 

Value Trinity 

Will Use 

50 

3000 

50 

3000 

1 

1 

36 

5 

1 

-0.0098 

-0.0045 

55 

55 

2 

50 

Notes 

Used surface 

observations and 

precipitation data 

• 3-12 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• 
 CALMET Variable Description 

Value Included in 

CENRAP Protocol 

Value Trinity 

Will Use Notes 

for precipitation 

interpolation (km) 

CUTP Minimum 

precipitation rate cut 

off (mmlhr) 

0.01 0.01 

• 

• 3-13 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• 4. CALPUFF

Trinity conducted a three-year CALPUFF analysis. The CAL PUFF model requires the input of 

meteorological data output by CALMET, source emissions data, receptor data, ozone and ammonia 

data, and model parameter settings. 

4.1 BART-ELIGIBLE SOURCES 

As an electricity generating station, the Horseshoe Lake station is considered BART-eligible. In 

order to determine what specific units constitute the "BART-eligible" source, the construction dates 

of the each of the plant's units must be examined. A summary of those units that were "in existence" 

between the IS-year BART window (August 7, 1962-August 7, 1977) is provided below. 

TABLE 4-1. CONSTRUCTION DATE SUMMARY 

Unit No. Name Construction Date 

HL7 Babcock & Wilcox 1963 

HL8 Combustion Engineering 1968 

• 4.2 SOURCE EMISSIONS DATA 

Trinity included emissions of S02, H2S04, NOx, and PMlO in the model. For source-specific 

analyses, CENRAP has suggested several sources of emission data in the following priority:! 

... Continuous Emission Monitoring (CEM) data, for period 2001-03 

... CEM data for 2002 

... Actual 2002 emission rates in state emission inventories 

... Emission factors from AP-42 source profiles 

... Permit allowable emissions, or 

... Potential to emit 

The modeled emissions are based on the highest hourly emission rate (based on a 24-hour calendar 

day average) that occurred from 2001 to 2003 and were obtained from collected CEM data. A 

detailed summary of emission rates and source data is included in Appendix A. Table 4-2 provides a 

brief summary of these emission rates . 

• I CENRAP BART Modeling Guidelines, p. 7-1. 

4-1 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• TABLE 4-2. MAXIMUM EMISSION RATES (24-HOUR AVERAGE) 

Unit ID NOx 

Ihslhr 

PM10 

lhslhr 

S02 

lhslhr 

H2SO4 

lhslhr 

HL7 566.45 4.94 68.01 0.244 

. HL8 1256.87 5.30 1.76 0.017 

4.2.1 PMIO EMISSIONS 

PMIO emissions are not directly entered into the model but are instead speciated out into its smaller 

constituents. The PMIO emissions from the boilers are speciated according to the Federal Land 

Managers' guidance to include the following:2 

• Coarse particulate matter (PMc, considered PM2.5-10) 

• Fine particulate matter (PMF, considered PM<2.5) 

• Sulfates (S04) 

• Secondary organic aerosols (SOA) 

• Elemental carbon (EC) 

Based upon FLM guidance, PMIO emissions from natural gas combustion consists of primarily coarse 

(25%) and fine (75%). A summary ofspeciated PMIO emissions is presented in Table 4-3. Full 

details of PM10 speciation can be found in Appendix A. 

TABLE 4-3. SPECIATED PMIO EMISSIONS 

• 


Unit ID PM (coarse) 

lhslhr 

PM (fine) 

lhslhr 

S04 

lbs/hr 

SOA 

Ihs/hr 

EC 

Ihslhr 

HL7 1.236 3.707 -­ -­ -­

HL8 1.325 3.974 -­ -­ -­

• 2 http://www2.nature.nps.gov/airiPermits/ectiectGasFiredCT.cfm 

4-2 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• • • • • 

• • • • • • 

• • • • • • • • • • 

• • • • • • • • • • 

• • • • 

• • • 

• • • 

• • • 

• • 

• • 

• 

• 

• 

• 4.2.2 STACK PARAMETERS 

Table 4-4 provides a summary of source exhaust parameters. 

TABLE 4-4. POINT SOURCE STACK PARAMETERS 

\ . 

Emission UTM UTM Exit Stack Stack Exit 

unit East (X) North (Y) Velocity Height Diameter Temperature 

(meters) (meters) (ftls) (feet) (feet) (Fahrenheit) 

HL7 665;078 3,930,971 42.08 189 16 296 

HL8 665,051 3,931,063 31.82 186 22 268 

The base elevation of each of the units is 328 meters (1,076 feet) above MSL based upon visual 

inspection of USGS topographic maps. 

4.3 RECEPTOR LOCATIONS 

The National Park Service (NPS) has electronic files for each Class I area available on their website 

containing the locations and elevations of discrete Class I area receptors. The receptor files for Caney 

Creek Wilderness, Wichita Mountains Wildlife Refuge, Upper Buffalo Wilderness, and Hercules 

Glades Wilderness were downloaded from the NPS website, converted into the LCC NAD27 

• 

projection, and incorporated into the CALPUFF model. Receptor locations for these Class I areas are 

shown in Figures 4-1 to 4-4 . 

FIGURE 4-1. CANEY CREEK WILDERNESS RECEPTOR LOCATIONS 

Caney Creek Wildemess 

80 Re C8 ptors 

USFS Boundary S o'u res: 

FS National C overage lie: 

NR IS - ALP group Corva1li9,OR 

August 22,2003 

• • • • 

• 

• 

• • 

• • 

• 

• 4-3 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• • • • • • • 

• • • • • • • 

• • • 

• • • • • • • 

• • • • • • • 

• • • • • • 

• • • • • • 

• • • • • 

• • • • • 

• • • 

• • 

• • 

• • 

• 

• 

• FIGURE 4-2. WICHITA MOUNTAINS WILDERNESS RECEPTOR LOCA nONS 

WIchita Mountains Wildernsss ¥vithin Wichita hi! Quntsins NWR 

59 Receptore 

FWS Wideroess Boundary Source: 

Regian 2GIS 

500 Gold Ave,SW POBox 1306 

Albuquerque, NIII 87103 

FWS NWR Boundary Source: 

http://www.l.,..govfdatafr2gismounda ry .htrn I 

Septem bOT 18, 2003 

• 

FIGURE 4-3. UPPER BUFFALO WILDERNESS RECEPTOR LoCATIONS 

• 

Upper Buffalo Wilderness 

72 Receptors • • USFS Boundary Source: 

FS National Coverage file: 

NRI S - ALP group 

Corvallis, OR

• • August 22.2003 

• 4-4 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• • • • • 

• • • • • • • • 

• • • • • • • • • • 

• • • • • • • • • 

• • • • • • • • • • 

• • • • 

• • • 

• • • 

• FIGURE 4-4. HERCULES GLADES WILDERNESS RECEPTOR LOCATIONS 

• 

• 

• Herrules-Glades Widerness 

eo Receptors 

USFS Boundary Source: 

FS National Coverage fila: 

NRIS - PlP group 

Corvallis, OR 

Augusl 22,2003 

4.4 BACKGROUND OZONE 

Background ozone concentrations are required in order to model the photochemical conversion of 

S02 and NOx to sulfates (S04) and nitrates (N03)' CALPUFF can use either a single background 

value representative of an area or hourly ozone data from one or more ozone monitoring stations. 

CENRAP recommends either developing background ozone estimates from ambient monitors located 

within the particular domain being modeled or developing background ozone estimates from 

CENRAP's most recent CMAQ or CAMx simulation for the 2002 base year. Trinity used a very 

conservative value of 40 ppb (as recommended in CENRAP protocol Appendix) in lieu of the 

CENRAP recommendation. 

.4.5 BACKGROUND AMMONIA 

Background ammonia concentrations are required to model the formation of ammonium sulfates and 

ammonium nitrates. CENRAP recommends developing background ammonia estimates from 

CENRAP's most recent CMAQ or CAMx simulation for the 2002 base year. Since CMAQICAMx 

modeled and observed monthly averaged ammonia concentrations exhibit wide spatial variability, 

• 

CENRAP recommends obtaining separate monthly-averaged ammonia concentrations from CMAQ 

or CAMx for the CENRAP north, central and south modeling domains, respectively. These would 

then be used as input to CALPUFF. Since the data from CENRAP's CMAQ and CAMx simulations 

4-5 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• is not readily available, Trinity used a conservative monthly background concentration of3 ppb. This 

background concentration is the value included in CENRAP's protocol as a default background value 

for the CENRAP region. 

4.6 CALPUFF MODEL CONTROL PARAMETERS 

Table 4-5 provides a listing of the CALPUFF parameters that Trinity used in OG&E's modeling 

analysis. In addition to the parameters used for OG&E's modeling, the table also lists CENRAP's 

recommended parameters for comparison. In cases where a parameter is different than what 

CENRAP recommended, a short explanation as to the difference is provided. 

TABLE 4-5. SUMMARY OF CALPUFF INpUTS 

• 


CALPUFF 

Variable 

e Included in 

APProtocol Value .. Notes 

METRUN All model periods 

in met files will be 

run 

0 0 

IBYR Starting year Appropriate met year Years 200 I, 2002, 

2003 

IBMO Starting month 1 1 

IBDY Starting day I 1 

IBHR Starting hour 1 1 

XBTZ Base time zone (6 

=CST) 

6 6 

IRLG Length of run 8760 8760 

NSPEC Number of 

MESOPUFFII 

chemical species 

10 10 

NSE Number of 

chemical species 

to be emitted 

8 5 S02, S04, NOx, 

PMC,PMF 

ITEST Program is 

executed after 

SETUP phase 

2 2 

MRESTART Do not read or 

write a restart file 

during run 

0 0 

NRESPD File written only at 

last period 

0 0 

METFM CALMET binary 

file 

(CALMET.MET) 

1 1 

AVET Averaging time in 

minutes 

60 60

• 4-6 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• 

• 

CALPUFF 

Variable Description 

Value Included in 

CENRAP Protocol Value Trinity Used Notes 

PGTIME PG Averaging 

time in minutes 

60 60 

MGAUSS Gaussian 

distribution used 

in near field 

1 1 

MCTADJ Partial pi 

terrain ad' 

3 3 

MCTSG Sub-grid-scale 

complex terrain 

not modeled 

0 0 

MSLUG Near-field puffs 

not modeled as 

elongated 

0 0 

MTRANS Transitional plume 

rise modeled 

1 1 

MTIP Stack tip 

downwash used 

1 1 

MSHEAR (0, 1) Vertical 

wind shear (not 

modeled, 

modeled) 

0 0 

MSPLIT Puffs are not split 0 1 Allowed for puff 

splitting due to 

significant sourcereceptor distances 

MCHEM MESOPUFFII 

chemical 

parameterization 

scheme 

1 1 

MAQCHEM Aqueous phase 

transformation not 

modeled 

0 0 

MWET Wet removal 

modeled 

1 r. 

MDRY Dry deposition 

modeled 

1 1 

MDISP PG dispersion 

coefficients 

3 3 

MTURBVW Use both cry and 

crw from 

PROFILE.DA T to 

compute cry and crz 

(nla) 

3 3 

• 4-7 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• 

• 

CALPUFF 

Variable Description 

Value Included in 

CENRAP Protocol Value Trinity Used Notes 

MDISP2 PG dispersion 

coefficients 

3 3 

MROUGH PG cry and crz not 

adjusted for 

roughness 

0 0 

MPARTL No partial plume 

penetration of 

elevated inversion 

1 1 

MTINV Strength of 

temperature 

inversion 

computed from 

default gradients 

0 0 

MPDF PDF not used for 

dispersion under 

convective 

conditions 

0 0 

MSGTIBL Sub-grid TIBL 

module not used 

for shoreline 

0 0 

MBCON Boundary 

concentration 

conditions not 

modeled 

0 0 

MFOG Do not configure 

for FOo-lnodel 

output 

0 0 

MREG Technical options 

must conform to 

USEPALong 

Range Transport 

(LRT) guidance 

1 1 

CSPEC CENRAP OG&E Horseshoe Lake 

Output 

Group 

Species Modeled Emitted 

Dry 

Deposition 

Output 

Group 

Species -r0deled Emitted 

Dry 

Deposition 

S02 1 1 S02 I 1 1 

S04 1 2 S04 1 1 2 

NOX 1 1 NOX 1 1 1 

HN03 1 1 HN03 1 0 1 

N03 1 0 2 N03 1 0 2 

NH3 1 1 1 NH3 1 0 1 

PMC 1 1 2 PMC 1 1 2

• 4-8 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• 

• 

• Trinity Consultants 

063701.0003 

CALPUFF Value Included in 

Variable Description CENRAP Protocol 

PMF I 1 1 2 

EC =it 1 2 

SOA 1 2 

PMAP Map projection UTM 

NX Number ofX grid 66 

cells in 

meteorological 

grid 

NY Number ofY grid 66 

cells. in 

meteorological 

grid 

NZ Number ofvertical 10 

layers in 

meteorological 

grid 

DGRlDKM Grid spacing (km) 6 

ZFACE Cell face heights 0,20,40, SO, 160, , 

in meteorological 320,640,1200,2000, 

grid (m) 3000,4000 

XORlGKM Reference X 5 

coordinate for SW 

corner ofgrid cell 

ofmeteorological 

grid (km) 

YORlGKM Reference Y 3327 

coordinate for SW 

corner ofgrid cell 

ofmeteorological 

grid (km) 

IUTMZN UTMzoneof 12 

coordinates 

(NADS3) (use 

only if 

PMAP=UTM) 

IBCOMP X index oflower 1 

left corner ofthe 

computational grid 

JBCOMP Y index oflower 1 

left corner ofthe 

computational 

grids 

IECOMP X index ofupper 66 

Oklahoma Gas & Electric Co. 4-9 

Refined BART Modeling Report (Horseshoe Lake) 

Value Trinity Used 

PMF 1 

EC 1 

SOA 1 

LCC 

256 

155 

10 

3.0 

0,20,40, SO, 160, 

320,640, 1200, 

2000,3000,4000 

0 

0 

14 

1 

1 

256 

Notes 

~ 2 

2 

2 

Based on refined grid 

parameters as 

specified in 

CALMETruns 

Based on refined grid 

parameters as 

specified in 

CALMETruns 

Refined grid size 

Appropriate for 

domain (refined grid) 

Appropriate for 

domain (refined grid) 

N/A;LCC 

coordinates used 

Appropriate for 
• 

• 

CALPUFF 

Variable Description 

Value Included in 

CENRAP Protocol Value Trinit Notes 

right comer ofthe 

computational grid 

domain (refined grid) 

JECOMP Y index of upper 

right comer ofthe 

computational grid 

66 155 Appropriate for 

domain (refined grid) 

LSAMP Sampling grid is 

not used 

F F 

IBSAMP X index of lower 

left comer of 

sampling grid 

1 I 

JBSAMP Y index of lower 

left comer of 

sampling ~id 

I I 

IESAMP X index of upper 

right comer of 

sampling grid 

66 256 Appropriate for 

domain (refined grid) 

JESAMP Y index of upper 

right comer of 

sampling grid 

66 155 Appropriate for 

domain (refined grid) 

MESHDN Nesting factor of 

sampling grid 

I 1 

ICON Output file 

CONC.DAT 

containing 

concentrations is 

created 

1 1 

lORY Output file 

DFLX.DAT 

containing dry 

fluxes is created 

1 I 

IWET Output file 

WFLX.DAT 

containing wet 

fluxes is created 

I I 

IVIS Output file 

containing relative 

humidity data is 

created 

1 1 

LCOMPRS Perform data 

compression in 

output file 

T T 

IMFLX Do not calculate 

mass fluzes across 

0 0

• 4-10 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• 

• 

CALPUFF Value Included in 

Variable Description CENRAP Protocol 

specific 

boundaries 

IMBAL Mass balances for 0 

each species not 

reported hourly 

ICPRT Print concentration I 

fields to output list 

file 

IDPRT Do not print dry 0 

flux fields to 

output list file 

IWPRT Do not print wet 0 

flux fields to 

output list file 

ICFRQ Concentration 1 

fields are printed 

to output list file 

every hour 

IDFRQ Dry flux fields are 1 

printed to output 

list file every 1 

hour 

IWFRQ Wet flux fields are 1 

printed to output 

list file every 1 

hour 

IPTRU Units for line .) " 

printer output are 

in glm) for 

concentration and 

glm2/s for 

deposition 

lMESG Messages tracking 2 

the progress ofrun 

written to screen 

LDEBUG Logical value for F 

debug output 

IPFDEB First puffto track 1 

NPFDEB Number of puffs 1 

to track 

NNI Meteorological 1 

period to start 

output 

0 

1 

0 

0 

1 

1 

1 

3 

2 

\ 

F 

1 

1 

1 

Value Trinity Used Notes 

• 4-11 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• 

• 

CALPUFF 

Variable Description 

Value Included in 

CENRAP Protocol Value Trinity Used Notes 

NN2 Meteorological 

period to end 

output 

10 10 

NHILL Number ofterrain 

features 

0 0 

NCTREC Number ofspecial 

complex terrain 

receptors 

0 0 

MHILL Input terrain and 

receptor data for 

CTSG hiils input 

in CTDM format 

2 2 

XHILL2M Conversion factor 

for changing 

horizontal 

dimensions to 

meters 

1 1 

ZHILL2M Conversion factor 

for changing 

vertical 

dimensions ,to 

meters 

1 1 

XCTDMKM X origin ofCTDM 

system relative to 

CALPUFF 

coordinate system 

(km) 

0 0 

YCTDMKM Y origin ofCTDM 

system relative to 

CALPUFF 

coordinate system 

(km) 

0 0 

S02 Diffusivity 0.1509 0.1509 

Alpha star 1000 1000 

Reactivity 8 8 

Mesophyll 

resistance 

0 0 

Henry's Law 

coefficient 

0.04 0.04 

NOx Diffusivity 

Alpha star 1 1 

Reactivity 8 8 

Mesophyll 5 5

• 4-12 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• 

• 

~ Variable Description 

Value Included in 

CENRAP Protocol Value Trinity Used Notes 

resistance 

Henry's Law 

coefficient 

3.5 3.S 

HN03 Diffusivity 0.1628 0.1628 

Alpha star 1 1 

18 18 

~ 0 

r" 

0 

Henry's Law 8.e-8 8.e-8 

S04-2 Geomatric mass 

mean diameter of 

S04-2 (11m) 

0.48 0.48 

N03­ Geometric mass 

mean diameter of 

N03- (11m) 

0.48 0.48 

PMC Geometric mass 

mean diameter of 

PMC(l1m) 

6 6 

PMF Geometric mass 

mean diameter of 

PMF (11m) 

0.48 0.48 

EC Geometric mass 

mean diameter of 

EC (f..lm) 

0.48 0.48 

SOA Geometric mass 

mean diameter of 

SOA(f..lm) . 

0.48 0.48 

RCUTR Reference cuticle 30 30 

RGR ~ resistance (stcm) 

10 

REACTR Reference 

pollutant reactivity 

8 8 

NlNT Number ofparticle 

size intervals for 

effective particle 

deposition velocity 

9 9 

IVEG Vegetation in non· 

irregated areas is 

active and 

unstressed 

I 1 

S02 Scavenging 3.21E-OS 3.21E·OS • 4-13 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• 

• 

CALPUFF 

Variable Description 

Value Included in 

CENRAP Protocol Value Trinity Used Notes 

coefficient for 

liquid precipitation 

(S·I) 

Scavenging 

coefficient for 

frozen 

precipitation (S'I) 

0 0 

S04-2 Scavenging 

coefficient for 

liquid precipitation 

(S·l) 

1.0E-04 1.0E-04 

Scavenging 

coefficient for 

frozen 

precipitation (S·I) 

3.0E-05 3.0E-05 

HN03 Scavenging 

coefficient for 

liquid precipitation 

(S·I) 

6.0E-05 6.0E-05 

Scavenging 

coefficient for 

frozen 

precipitation (S·I) 

0 0 

N03­ Scavenging 

coefficient for 

liquid precipitation 

(S"I) 

I.OE-04 1.0E-04 

Scavenging 

coefficient for 

frozen 

precipitation (S·l) 

3.0E-05 3.0E-05 

NH3 Scavenging 

coefficient for 

liquid precipitation 

(S"I) 

8.0E-05 NA 

Scavenging 

coefficient for 

frozen 

precipitation (S"I) 

0 NA 

PMC Scavenging 

coefficient for 

liquid precipitation 

(S"l) 

I.OE-4 1.0E-4 

• 4-14 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• 

• 

CALPUFF 

Variable Description 

Value Included in 

CENRAP Protocol Value Trinity Used Notes 

Scavenging 

coefficient for 

frozen 

precipitation (5.1 

) 

3.0E-05 3.0E-05 

PMF Scavenging 

coefficient for 

liquid precipitation 

(S·I) 

1.0E-05 1.0E-05 

Scavenging 

coefficient for 

frozen 

precipitation (S·I) 

3.0E-05 3.0E-05 

EC Scavenging 

coefficient for 

liquid precipitation 

(s"I) 

1.0E-04 1.0E-04 

Scavenging 

coefficient for 

frozen 

precipitation (S·I) 

3.0E-05 3.0E-05 

OC Scavenging 

coefficient for 

liquid precipitation 

(S·I) 

1.0E-04 1.0E-04 

Scavenging 

coefficient for 

frozen 

precipitation (S·l) 

3.0E-05 3.0E-05 

MOZ 

, 

Read ozone 

background 

concentrations 

from ozone.dat file 

(measured values) 

1 1 

BCK03 Background ozone 

concentration 

(ppb) 

12*40 12*40 

BCKNH3 Background 

ammonia 

concentration 

(ppb) 

12*3 12*3 

RNITEI Nighttime S02 

loss rate is %lhour 

0.2 0.2 

RNITE2 Nighttime NOX 2 2

• 4-15 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• 

• 

CALPUFF 

Variable Description 

Value Included in 

CENRAP Protocol Value Trinity Used Notes 

loss rate is %!hour 

RNITE3 Nighttime HN03 

loss rate is %!hour 

2 2 

MH202 Background H202 

concentrations 

1 0 Need to choose 0 in 

order to use monthly 

background value 

BCKH202 Background 

monthly H202 

concentrations 

I 12*1 

BCKPMF Fine particulate 

concentration for 

SOA option 

I (ug/m3) 

1 1 

OFRAC Organic fraction of 

fine particulate for 

SOAoption 

.2 0.15,0.15,0.2,0.2,0.2, 

0.2,0.2,0.2,0.2,0.2, 

0.2,0.15 

Irrelevant, since 

MCHEM not equal to 

4 

VCNX VOCINOX ratio 

for SOA option 

50 50 

SYDEP Horizontal size of 

a puff in meters 

beyond which the 

time dependant 

dispersion 

equation ofHeffter 

is used 

550 550 

MHFTSZ Do not use Heffter 

formulas for sigma 

z 

° 0 

JSUP Stability class used 

to determine 

dispersion rates for 

puffs above 

r 

5 5 

CONK! Vertical dispersion 

constant for stable 

conditions 

0.01 om 

CONK2 Vertical dispersion 

constant for 

neutraVstable 

conditions 

0.1 0.1 

TBD Use ISC transition 

point for 

determining the 

0.5 0.5 

• 4-16 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• 

• 

CALPUFF 

Variable Description 

Value Included in 

CENRAP Protocol Value Trinity Used Notes 

transition point 

between the 

Schulman-Scire to 

Huber-Snyder 

Building 

Downwash 

scheme 

IURBI Lower range of 

land use categories 

for which urban 

dispersion is 

assumed 

10 10 

IURB2 Upper range of 

land use categories 

Jor which urban 

dispersion is 

assumed 

19 19 

ILANDUIN Land use category 

for modeling 

domain 

* * 

XLAIIN Leaf area index for 

modeling domain 

* * 

ZOIN Roughness length 

in meters for 

modeling domain 

* * 

ELEVIN Elevation above 

sea level 

* * 

XLATIN North latitude of 

station in degrees 

- -

XLONIN South latitude of 

station in degrees 

I ­ -

ANEMHT Anemometer 

hei 

To 10. 

ISIGMAV Sigma-v is read 

for lateral 

turbulence data 

1 1 

IMIXCTDM Predicted mixing 

heights are used 

0 0 

-

XJ\1XLEN Maximum length 

ofemitted slug in 

meteorological 

grid units 

1 1 

XSAMLEN Maximum travel 10 10 • 4-17 . Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• 

• 

CALPUFF Val 

Variable Description CENI 

distance ofslug or 

puffin 

meteorological 

grid units during 

one sampling unit 

J\1XNEW Maximum number 60 

of puffs or slugs 

released from one 

source during one 

time step 

MXSAM Maximum number 60 

of sampling steps 

during one time 

step for a puffor 

slug 

NCOUNT Number of 2 

iterations used 

when computing 

the transport wind 

for a sampling step 

that includes 

transitional plume 

rise 

SYMIN Minimum sigma y 1 

in meters for a 

new puff or slug 

SZMIN Minimum sigma z 1 

in meters for a 

new puff or slug 

SVMIN Minimum lateral 0.5 

turbulence 

velocities (m/s) 

SWMIN Minimum vertical 0.20, 0.12, 0.08, 0.06, 

turbulence 0.03,0.016 

velocities (m/s) 

WSCALM Minimum non- 0.5 

calm wind speeds 

(m/s) 

XMAXZI Maximum mixing 3000 

height(m) 

XMINL.l Minimum mixing 20 

I height (m) 

SL2PF Maxmum cry/puff 10 

Value Trinity Used 

60 

60 

2 

1 

1 

0.5 

0.20, 0.12, 0.08, 

0.06,0.03,0.016 

0.5 

3000 

20 

10 

Notes 

• 4-18 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• 

• 

~ Value Included in 

CENRAP Protocol 

PLXO Wind speed 0.07,0.07,0.10,0.15, 

power-law 0.35,0.55 

exponents 

WSCAT Upper bounds of 1.54,3.09,5.14,8.23, 

1

51 5 wind speed 10.80 

classes 

PGGO Potential temp 0.020,0.035 

gradients PG E & 

F (deglkm) 

CDIV Divergence 0.01 

criterion for dw/dz 

oIs) 

PPC Plume path 0.5, 0.5, 0.5, 0.5, 

coefficients (only 0.35,0.35 

ifMCTADJ "" 3) 

NSPLIT Number ofpuffs 3 

when split 

IRESPLIT Hours when puff 1900 

is eligible to split 

ZISPLIT Previous hours 100 

minimum mixing 

height, m 

ROLDMAX Previous max 0.25 

mixing 

height/current 

height ratio, must 

be less than this 

value to allow puff 

to split 

NSPLITH Number of puffs 5 

resulting from a 

split 

SYSPLITH Minimum sigma-y 1.0 

of puff before it 

may split 

SHSPLITH Minimum puff 2.0 

elongation rate 

from wind shear 

before puff may 

split 

~1.0E-07 

Value Trinity Used 

0.07,0.07,0.10, 

0.15,0.35,0.55 

1.54,3.09, 5.14, 

8.23, 10.80 

0.020,0.035 

0.01 

0.5, 0.5, 0.5, 0.5, 

0.35,0.35 

3 

Hour 17 

100 

0.25 

5 

1.0 

2.0 

1.0E-07 

Notes 

Should be by hour of 

day - 1900 is hour 17 

,.-

• 4-19 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• 

• 

CALPUFF 

Variable Description 

Value Included in 

CENRAP Protocol Value Trinity Used Notes 

before a pluff may 

split 

EPSSLUG Criterion for 

SLUG sampling 

1.0E-04 1.0E-04 

EPSAREA Criterion for area 

source integration 

1.0E-06 1.0E-06 

DSRISE Trajectory step 

length for 

numerical site 

'LL 

1.0 1.0 

NPTl Number of point 

sources with 

constant stack 

parameters or 

variable emission 

rate scale factors 

Varies by scenario 2 Appropriate for 

OG&E 

IPTU Units for point 

source emission 

rates are gls 

1 3 Used different units 

(3 Iblhr) 

NSPTl Number ofsourcespecies 

combinations with 

variable emissions 

scaling factors 

- -

NPT2 Number of point 

sources with 

variable emission 

parameters 

provided in 

external file 

- -

MISC Other point source 

inputs include 

stack height, stack 

diameter, exit 

temperature, exit 

velocity, 

down wash flag 

and emissions by 

species 

- -

NARI Number of 

polygon area 

sources 

Varies by scenario 0 None modeled 

IARU Units for area 1 I

• 4-20 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• 

• 

CALPUFF 

Variable Description 

Value Included in 

CENRAP Protocol Value Trinity Used Notes 

source emission 

rates are gim2

/s 

NSARI Number of source 

species 

combinations with 

variable emissions 

scaling factors 

' - -

NAR2 Number of 

buoyant polygon 

area sources with 

variable location 

and emission 

parameters 

- -

NLN2 Number of 

buoyant line 

sources with 

variable location 

and emission 

parameters 

- 0 None modeled 

NLINES Number of 

buoyant line 

sources 

- -

ILNU Units for line 

source emission 

rates in gls 

- -

NSLNI Number of sourcespecies 

combinations with 

variable emissions 

rs 

- -

MXNSEG Maximum number 

ofsegments used 

to model each line 

- -

NLRlSE Number of 

distance at which 

transitional rise is 

computed 

- -

XL Average line 

source length (m) 

- -

HBL Average height of 

line source height 

(m) 

- -

WBL Average building - -

• 4-21 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• 


• 


CALPUFF 

Variable Description 

Value Included in 

CENRAP Protocol Value Trinity Used Notes 

width (m) 

WML Average line 

source width (m) . 

- -

DXL Average 

separation 

between buildings 

(m) 

- -

FPRIMEL A verage buoyancy 

parameter (m4/s3) 

- -

NVL1 Number ofvolume 

sources 

- 0 None modeled 

IVLU Units for volume 

source emission 

rates in 

grams/second 

- - -

NSVLl Number of sourcespecies 

combinations with 

variable emissions 

scaling factors 

- -

IGRDVL Gridded volume 

source data is not 

used 

- -

VEFFHT Effective height of 

emissions (m) 

- -

VSIGYI Initial sigma-y 

value 

- -

VSIGZI Initial sigma-z 

value 

- -

NREC Number of nongridded receptors 

5630 291 Receptor data 

provided in 

Appendix 

• 4-22 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• 5. CALPOST 

Trinity conducted a three-year CALPOST analysis to determine the change in light extinction caused 

by OG&E's BART-eligible sources when compared to a natural background. The CALPOST model 

requires the input of concentration data output by CALPUFF. 

5.1 LIGHT EXTINCTION ALGORITHM 

Trinity utilized EPA's currently approved algorithm for reconstructing light extinction (as opposed to 

the new equation for reconstructing light extinction recommended by the IMPROVE Steering 

Committee). The light extinction equation is provided below. 

= 3* f(RH) * [(NH4)2S04] + 3* f(RH) * [NH4N03] + 4 *[OC] + 1 *[PMf b ] ext 

+ O.6*[PMc ] + lO*[EC] + bRay 

The algorithm was used to calculate the daily light extinction attributable to the Horseshoe Lake 

Station's BART -eligible sources and light extinction attributable to a natural background. The. 

change in deciviews based on the source and background light extinctions was evaluated using the 

• 


equation below . 


Adv 1 0 *

In bext, backgrOlUld +bext, source 1

[ bext, background 

5.2 CALPOST PROCESSING METHOD 

Trinity used CALPOST Method 6, which calculates hourly light extinction impacts for the source and 

background using monthly average relative humidity adjustment factors, Trinity used monthly Class 

I area-specific relative humidity adjustment factors based on the centroid of the Class I area as 

included in Table A-3 ofEPA's Guidance/or Estimating Natural Visibility Conditions Under the 

Regional Haze Program. The factors for the relevant Class I areas in the analysis are provided in 

Table 5-1. 

Class I Area 


Caney Creek 


Wichita Mountains 


Upper Buffalo 


Hercules Glades 


Jan 

3.4 

2.7 

3.3 

3.2 

TABLE 5-1. MONTHLY HUMIDITY FACTORS 

Feb Ma ul Aug Sep Oct Nov Dec 

2.9 3.0 3.6 3.6 3.4 3.4 3.6 3.5 3.4 3.5

2.4 2.4 3.0 2.7 2.3 2.5 2.9 2.6 2.7 2.8 

2.7 2.8 3.4 3.4 3.4 3.4 3.6 3.3 3.2 3.3 

2.7 2.7 3.3 3.3 3.3 3.3 3.4 3.1 3.1 3.3 

• 5-1 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• 5.3 NATURAL BACKGROUND 

Trinity used default west natural background values for the Wichita Mountains and default east 

natural background values for Caney Creek, Upper Buffalo, and Hercules Glades. 3 The annual 

average concentrations are included in Table 2-1 ofEPA's Guidance/or Estimating Natural Visibility 

Conditions Under the Regional Haze Program and are provided in Table 5-2. 

TABLE 5-2. DEFAULT AVERAGE ANNUAL NATURAL BACKGROUND LEVELS 

Component 

Average Annual 

Natural Background 

West (J.1g1m3 

) 

Average Annual 

Natural Background 

East (J.1g1m3 

) 

Ammonium Sulfate 0.12 0.23 

Ammonium Nitrate 0.10 0.10 

Organic Carbon Mass 0.47 1.40 

Elemental Carbon 0.02 0.02 

Soil 0.50 0.50 

Coarse Mass 3.0 3.0 

• 


5.4 EVALUATING BART-EXEMPTION 

Trinity compared the high ofthe 2001 through 2003 daily .i1dv values output by CALPOST to a 

contribution threshold of 0.5 .i1dv. If the 98th percentile .i1dv values (the 7th highest value, 22nd highest 

over three years) output by CALPOST is less 0.5 .i1dv, then the source is exempt from BART 

requirements. If the highest ofthe .i1dv values output by CALPOST is greater than 0.5 .i1dv, then the 

source is considered subject to BART regulations and must start on a BART-determination process. 

5.5 SUMMARY OF CALPOST CONTROL PARAMETERS 

Table 5-3 provides a listing ofthe CALPOST parameters that Trinity used in OG&E's modeling 

analysis. In addition to the parameters used for OG&E's modeling, the table also lists CENRAP's 

recommended parameters for comparison. In cases where a parameter to be used is different than 

what CENRAP recommended, a short explanation as to the difference is provided. 

TABLE 5-3. SUMMARY OF CALPOST INPUTS 

CALPOST 

Variable Description 

Value Included in 

CENRAP Protocol Value Trinity Used Notes 

Years 2001, 2002, 

2003 

ISYR Starting year 2001 Appropriate met 

year 

ISMO Starting month 1 1 

ISDY Starting day 1 , 

1 

• 3 Based on comments received from EPA Region 7 to Trinity Consultants' Kansas City office, May 22, 2006. 

5-2 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• 

• 

CALPOST 

Variable Description 

Value Included in 

CENRAP Protocol Value Trinity Used Notes 

ISHR Starting hour 0 0 All CALPUFF 

periods will be 

included 

NPER Number of periods to 

process 

8760 8760 

NREP Process every hour of 

data? 1 = yes 

1 1 

A SPEC Process species for 

visibility 

VISIB VISm 

ILAYER Layer/deposition code; 

1 for CALPUFF 

concentrations 

1 1 

A Scaling factor, slope 0 0 

B Scaling factor, 

intercept 

0 0 

LBACK Add hourly 

background 

concentrations of 

fluxes? 

F F 

LG Process gridded 

receptors? 

F F 

LD Process discrete 

receptors? 

T T 

LCT Process complex 

terrain receptors? 

F F 

LDRING Report receptor ring 

results? 

F 

, 

F 

NDRECP Select all discrete 

receptors 

-1 Varies As appropriate for 

Class I area being 

analyzed 

mGRID X index of LL corner 

of receptor grid 

-1 -1 

JBGRID Y index ofLL corner 

of receptor grid 

-1 -1 

IEGRID X index of UR corner 

of 

-1 -1 

JEGRID Y index ofUR comer 

of receptor grid 

-1 -1 

NGONOFF Number of gridded 

receptor rows 

0 0 

NGXRECP Exclude specific 

gridded receptors, Yes 

=0 

0 0 

• 5-3 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• 

• 

CALPOST Value Included in 

Variable Description CENRAP Protocol 

RHMAX Maximum RH% used 95 

in particle growth 

curve 

LVS04 Compute light T 

extinction for sulfate? 

LVN03 Compute light T 

extinction for nitrate? 

LVOC Compute light T 

extinction for organic 

carbon? 

LVMPC Compute light T 

extinction for coarse 

particles? 

LVMPF Compute light T 

extinction for fine 

particles? 

LVEC Compute light T 

extinction for 

elemental carbon? 

LVBK Include background in T 

extinction calculation? 

SPECPMC Coarse particulate PMC 

species 

SPECPMF Fine particulate PM10 

species 

EEPMC Extinction efficiency 0.6 

for coarse particulates 

EEPMF Extinction efficiency 1.0 ~ ? 

EEPMCBCK Extinction efficiency 0.6 

for coarse part. 

BackJ?;round 

EES04 Extinction efficiency 3.0 

for ammonium sulfate 

EEN03 Extinction efficiency 3.0 

for ammonium nitrate 

EEOC Extinction efficiency 4.0 

for organic carbon 

EESOIL Extinction efficiency 1.0 

EEEC 

for soil 

~10.0 

1.0 

-, 

Value Trinity Used 

95 

T 

T 

T 

T 

T 

T 

T 

PMC 

PMF 

0.6 

1.0 

0.6 

3.0 

3.0 

4.0 

Notes 

Notation difference 

• 5-4 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• Value Included in 

Variable 

CALPOST 

Description CENRAP Protocol Value Trinity Used Notes 

6 

background light 

extinction 

BEXTBTBK 

MVISBK Method 6 for 6 

Not Used ary since 

for MVISBK=l 

Background extinction 12 

=6 

RHFRAC % of particles affected Not Used ssary since 

byRH 

10 

MVISBK=6 

RHFAC Extinction coefficients Depends on Class I 

for modeled and Area 

background 

hygroscopic species 

computed using EPA 

(2003) monthly RH 

adjustment factors 

• 

BKS04 Background sulfate 0.23 0.23 

extinction coeff- east 

I 

BKN03 Background nitrate 0.10 0.10

extinction coeff - east 

BKPMC Background sulfate 3.00 3.00

extinction coeff - east 

Background organic 1.40 

carbon extinction 

coeff- east 

BKSOC 1.40 

BKSSOIL Background soil 0.50 0.50 

extinction coeff- east 

For Caney Creek: 

3.4,3.1,2.9,3.0, 

3.6,3.6,3.4,3.4, 

3.6,3.5,3.4,3.5 

Wichita Mountains: 

2.7,2.6,2.4,2.4, 

3.0,2.7,2.3,2.5, 

2.9,2.6,2.7,2.8 

Upper Buffalo: 

3.3,3.0,2.7,2.8, 

3.4,3.4,3.4,3.4, 

3.6,3.3,3.2,3.3 

Hercules Glades: 

3.2,2.9,2.7,2.7, 

3.3, 3.3, 3.3, 3.3, 

3.4, 3.1, 3.1, 3.3 

As appropriate for 

Class I area 

Used for Caney 

Creek, Upper 

Buffalo, & Hercules 

Glades 

Used for Caney 

Creek, Upper 

Buffalo, & Hercules 

Glades 

Used for Caney 

Creek, Upper 

Buffalo, & Hercules 

Glades 

Used for Caney 

Creek, Upper 

Buffalo, & Hercules 

Glades 

Used for Caney 

Creek, Upper 

Buffalo, & Hercules

• Glades 

5-5 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• 

• 

CALPOST 

Variable Description 

. Value Included in 

CENRAP Protocol Value Trinity Used Notes 

BKSEC Background elemental 

carbon extinction 

coeff- east 

0.02 0.02 Used for Caney 

Creek, Upper 

Buffalo, & Hercules 

Glades 

BKS04 Background sulfate 

extinction coeff- west 

0.12 0.12 Used for Wichita 

Mountains 

BKN03 Background nitrate 

extinction coeff- west 

0.10 0.10 Used for Wichita 

Mountains 

BKPMC Background sulfate 

extinction coeff- west 

3.00 3.00 Used for Wichita 

Mountains 

BKSOC Background organic 

carbon extinction 

coeff-west 

0.47 0.47 Used for Wichita 

Mountains 

BKSSOIL Background soil 

extinction coeff- west 

0.50 0.50 Used for Wichita 

Mountains 

BKSEC Background elemental 

carbon extinction 

coeff-west 

0.02 0.02 Used for Wichita 

Mountains 

BEXTRAY Extinction due to 

Rayleigh scattering 

(liMm) 

10.0 10.0 

LDOC Print documentation 

image? 

F F 

IPTRU Print output units for 

concentrations and for 

deposition 

3 1 Units preference 

LlHR Report 1 hr averaging F F 

L3HR ~ times 

F 

L24HR Report 24 hr averaging 

times 

T T 

LRUNL Report run-length 

averaging times 

F F 

LT50 Top 50 table F F 

LTOPN Top N table F F 

NTOP Number of Top-N 

values at each receptor 

4 4 

ITOP Ranks of Top-N 

values at each receptor 

1,2,3,4 1,2,3,4 

LEXCD Threshold 

exceedances counts 

F F 

• 5-6 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• 


• 


CALPOST 

Variable Description 

Value Included in 

CENRAP Protocol V' ~ .. TT Notes 

TIlRESHI Averaging time 

threshold for 1 hr 

averages 

-I -I 

THRESH3 Averaging time 

threshold for 3 hr 

-I -1 

TIlRESH24 Averaging time 

threshold for 24 hr 

averages 

-1 -1 

THRESHN Averaging time 

threshold for NAVGhr averages 

-1 -1 

NDAY Accumulation period, 

days 

0 0 

NCOUNT Number of 

exceedances allowed 

I I 

LECHO Echo option F F 

LTIME Time series option F F 

LPLT Plot file oPtion F F 

LGRD Use grid format 

instead ofDATA 

format 

F F 

LDEBUG Output information for 

debugging? 

F F 

• 5-7 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
___ 

• 


• 


• 


6. MODEL RESULTS 


A summary ofthe top 25 visibility-impairing days at each ofthe relevant Class I areas over the 

modeled 2001-03 period is summarized in Table 6-1 through 6-4 below. Shaded values indicate 

visibility impacts that exceed the 0.5 Adv threshold for contribution to visibility impairment. As seen 

in these tables, the 98th percentile values indicate that the Horseshoe Lake Station's contribution to 

visibility impairment is below the 0.5 dv threshold at each ofthe neighboring Class I areas. These 

results indicate that the Horseshoe Lake Station therefore qualifies for exemption from BART. 

TABLE 6-1. VISIBLITY IMPACT MODEL RESULTS FROM CANEY CREEK 20Ot-03 

Background Extinction by Species (%) Year Day 

Visibility 

Impact (Adv) 

Rank Modeled 

504 N03 OC EC PMC PMF 


Peak 24-hr Average 
 0.429 0.88 98.96 0 o 0.02 0.14 2001 287 


2 
 0.326 0.96 98.91 0 o 0.01 0.11 2001 4 


3 0.254 3.59 96.23 0 o 0.01 0.18 2003 295 


4 0.241 0.97 98.91 0 o 0.01 0.11 2002 12 


5 0.217 1.66 98.25 0 o o 0.09 2002 58 


~----~6------~--~0~.2~0~2----+_~0~.8~9----~9~9~--~0----~00~~

7 0.197 ~'79 99.09 0 0.01 

. :~ 

11 I 2002 359 I 


1--____....!.8_______1__....!f\~~___ 05 97.83 0 0 o 0.12 
 2002 


9 0.194 0.33 99.64 0 0 0 0.03 2003 


lO 0.138 I 1.16 98.67 0 0 0.01 0.16 
 2002 47 __ 


II 0.133 
 1.89 98.03 0 0 0 0.08 2002 360 


12 0.105 2.93 96.97 0 0 0.01 0.09 2001 22 


13 0.104 2.24 97.64 0 ° 0.01 0.12 2001 24


14 0.101 0.97 98.92 ° ° ° 0.11 2002 354


15 0.101 2.79 97.05 0 0 ° 0.16 2003 _~?_ 

16 0.09 1.77 98.14 ° 0 ° 0.08 2002 __..5Jl__

17 0.09 1.17 98.71 _-=-0____-=0____--=-0____ 0:.:..;.1c.;.1__+--=.;20;:,;;;Oc.:::3--1..11­

18 0.089 7.39 92.42 0 0 0.01 0.18 2003 153 


~-----1~9~----~--~0~.0~8~8----+_-=0~.6~5--~9;:,;;;9~.2=2---~0-----=0~--=0~.0~1__~0~.1~2~-=20~0~2----~~~

1--__=-2°'--__-1__--"0=.0.::..;88=--_+--=2:.::..59=--__=971-'-.. 2".7,.. __-"°'--_._:::........ o __---"o __..:c 0..:..:.; 1:13:::'--1--=20=0=3__ .
__ .~~L 

~--~2~1~--~-~0~.0~8~6---+_~1~.6~1--~9~8~.2~6----~0----=0~__-=0-=.0~1__~0~.1~3~-=20~0~1___ 32 


98th Percentile 0.085 2.02 97.91 0 0 0.01 0.06 2001 347 


23 0.085 1.1 98.78 0 0 0 0.12 2003 363 


~--__~2~4~----~--~0~.0~8~5----~~2~.0~2--~9~7~.8~8__--~0----~0~---~f\o-----f\~·--I 2003__~14_~ 

25 0.082 0.86 99.13 ° 0 348 


6-1
 Oklahoma Gas & Electric Co. Trinity Consultants 


Refined BART Modeling Report (Horseshoe Lake) 063701.0003 

• TABLE 6-2. VISIBLITY IMPACT MODEL RESULTS FROM WICHITA MOUNTAINS 2001-03 


• 

Rank Modeled Background Extinction by Species (%) Year Day 

• 6-2
 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• TABLE 6-3. VISIBLITY L'VIPACT MODEL RESULTS FROM UPPER BUFFALO 2001-03 

• 


Rank Modeled Background Extinction by Species (%) Year Day 

Visibility Impact 

Peak 24-hr Average .-----~~~ 

CAdy) 

-----.. 

~ PMC 

" 

PMF 

0.09 2002 361 

2 "" 0.11 . 2002 _...__12..._... 

3 0.216 --_..,-_...._-'.._-­ 1.49 98.41 0 0 0 0.1 2003 7 

4 __Q:1?1.___ 1.88 97.99 0 0 0.01 0.13 2001 .2.12._ 

5 0.15 .1.13 98.7 0 0 0.D1 0.16 2002 47 

6 0.123 3.67 96.21 0 0 0.01 0.11 2001 60 

7 0.119 0.93 98.98 0 0 0 0.08 2003 351 - 8 0.109 2.33 97.53 0 0 0 0.13 2001 340 

9 0.104 8.95 90.58 0 0 0.01 0.46 2003 296 

10 0.1 -_. 2.12 97.8 0 0 0 0.07 2001 22 

11 0.095----­ 3.1 96.73 0 0 0.01 0.16 2003 82 

12 0.091 --------_.._--_. 1.6 98.28 0 0 . 0.01 0.11 2001 4 

13 0.09 -_._----_._-_._----_._-­ 0.64 99.2 0 0 0.01 015 2001 2E.L 

14 0.082 ._-_._---_..._._-----------_...._._-­ 5.17 94.72 0 0 0 0.11 2002 ?§.L 

15 0.082 "M_'_... __ ·_",_·_"'-_·_-".._--",,-_..._-'" 0.78 99.09 0 0 0.01 0.12 2003 18 

16 ,__·___,_... _ .•·._.0.08

__... ,_~··. __'_m_"'_... 2.03 97.86 0 0 0 0.11 2002 332 

17 ..__......_._.__0.072 .__...__....__._-_. 1.1 98.72 0 0 ().01 0.17 2002 333 

18 0.067 ,-----,--,-"'-'''-,-­ 1.42 98.5 0 0 0.01 0.07 2002 321 

19 0.059 ._-----­ 0.8~ 98.97 0 0 0.01 0.19 2001 3Q.._ 

20 0.058 ._--_._-"'--_._-­ 14.38 85.31 0 0 0.01 0.3 2003 256__ 

21 0.057 4.47 95.41 0 0 0 0.11 2001 11 

98th Percentile 0.056 2.74 97.11 0 0 0.01 0.14 2001 314 

23 0.056 - 2.05 97.84 0 0 0 0.11 2003 4 

24 0.055 1.64 98.22 0 0 0.01 0.13 2001 3 

25 0.054 6.44 93.16 0 0 0.01 0.39 2001 115 

• 6-3 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) 063701.0003 
• TABLE 6-4. VISIBLITY IMPACT MODEL RESULTS FROM HERCULES GLADES 2001-03 

• 


Rank Modeled Background Extinction by Species (%) Year Day 

Visibility Impact f------~-------------__1 

(~dv) 504 N03 OC EC PMC PMF 

Peak 24-hr Average .______J1.~~L______+_---'-1.:..::.6-'-1_---=9:..::8.:.,:.3:............._ _=0____0=---____=0__--'0:..:,:.0:..::9_t-=2:..::.00=.,:2'--- 361 

1___--=2'_____---1 __________Q~~~.L________+_-'1:.:.:.7-'-7-----'9::.:8::.:.1'--.- ° ° ° 0.13 2003 7 

3 -0.219 0.77 99.06 ° ° 0.01 0.17 2003 8 I-------'-----j.-.------.-.-----.--------.---.t--....::..:..:.-'----....::..::..:=------=­

1-_____'4___---1._...______.__ ,,_Q~~JL.____.,,_.____+_-4:..:.:.3::.:8'----..::.95:::.,:.=_5____"._".9_._.____-"0____'0"--_-"'0.:..:.1..:...1_~_2::.:0::.:0c.:..1_ 60 

1___--'-5___-j._._.__ ._,, ___..9..,~9_~__._____ ...... __ t---=2.:..:.5""'4__:=..;97'-'..3=--_.____._9__.____-=°___°.=..:.::..°1'--_.=.:°.'-'.16=----1-_2=°:..::°.=.3_ 82 

6 0.162 1.99 97.86 ° ° ° 0.15 2003 351 1-----=------1..---""-"".-.-.-,,-.---.--.--.-,,---.----,,.-+-'-'=-............::..:....:..:::.::.........·-·--------=-----"--.........::..:..:...::.-f-==­

1--__--"7___-j_,,_""_.,,______.Q~~_3______.__.,,__+_-=2.:..:.04:....:.........-.....:9-'-7.:.::,83=---._ ° ° ° 0.13 2001 340 

1___--=8___---1 __,,_______ Q1Q~__________+_-'1.:..:.8:=2---=9..::.8.:.::,08=---. 0._._._-,,-0_---'0"".0""'1__-"-0."""1_t---'2""'0-"-03=__ 13 

1--_____'_9___-j.__________Q1Q~_______+_-1:..;,;.3:..::2'----9:..::8:..:.,:.5:...:6---0:__-=-0_--=0:..:.,:.0:...,:1_---=0:..:..1,;",;1'___+_-=2:..::0.::.:02=--__-=3..=:32~_ 

1-__-=-1O=--__---1.______Q,Q~_1..._____-I1__..:::6.:..:::.3..::.6---=9..::.3:...:.4=-8_ ___'°0..__.........::0_._-'°'---__0:::.,:...:.,:16=___+-'2:..:0:.::,02=--.-- 262 

1--__--=-II'---__-j.______Q.07~_____-I1--.....:.1:.-=.5.=.2_ __=9,,;:.8:..::..3_=_5_. __0=___-'0=--_~--=0----'0~.1:..::3-t-=2c.=.00=-1'---.~~L 

1-__.........:..:12=--__---1_______Jl..,Q~~_______+_-=2:..:.:.9::.:6'------'9:..:6:.:..:.9:..::5'---0;'----........:..0__-'0'_____0""'.,;;,,;08'--+_2.....:0-"'0_1___2_~3c_ 

13 0.067 1.6 98.14 ° ° 0.01 0.25 2002 333 

1-__--=-14-'---__---1__ . _____ 9.06_L______11--...:.1:,::.8...:..1_--=9..::.8:.::.0=_5___0:=--__.........::0_---'0~.0"_'1'___0:::.,:....:..:13=___+-:2::.:0..::.0..:...1__...::3:..:.1,4..:.._

15 0.064 0.6 99.26 ° ° 0.01 0.14 2001 361 

16 0.057 0.87 99 ° ° ° 0.01° 0.13­ 2003 42 

1--___17___-t­_______ Q,Q_56______+---=2.:.,:.34:....:........._.....:9;,,;,,7,;,,::.5.=.6____0=_ 0.1 2001 5 

18 0.055 0.65 99.2 ° ° 0.01 0.14 2003 18 

1­__.........:..:19::..........__-1._._____._.......Q,Q?_~_______+_.....:1c:..:.8:..:.7----'9::.:8:.:..:.0:..::6­ ° ___°'--__---'-°__.....:°-'-.°""'7_1--2,;;";00;:",,,1_ 22 

1____2_0::..........__-1..._.___ . ___".Q.,Q?L_._._______+_--'0:..:.,:.9:...,:1~---'9:..::8:..:.,:.9:=2_ ° ° ° 0.17 2001 353 

1-­___2_1___-1.___.____"._.__9c.Q.~__.__.__.__.____+__0:..:..9;:"",4__9,;",;9c..;".0:...,:3_____Q..____O__ ° 0.03 2002 26 

98th Percentile 0.05 0.35 99.65 ° ° ° ° 2001 348 

23 ...... _.. ____ ._.Q:.9i~_._ .. _______ 1__-=--11'-".8::::2::..........--=8:..:.7.:..:::.5c.:..1______._9_._._.__.__0_____0._0L_--'0""'.64:....:........._1-=20"-'0=2_ 111 

1-­___2_4___-1 __ . ______.__.9...:.Q.i~_._._".__.___.__.t--=2;",;..1_=_5_.........::.97;",;..:...,:73:.........___ ° ° ° 0.12 2001 3 

25 0.046 1.42 98.46 ° ° ° 0.12 2003 362 

• 6-4 Oklahoma Gas & Electric Co. Trinity Consultants 

Refined BART Modeling Report (Horseshoe Lake) . 063701.0003 
• ApPENDIX A - EMISSION DATA 

• 

• Oklahoma Gas & Electric Company Trinity Consultants 

Refined BART Modeling Report 063701.0003 
Printed • 10/30/2006 • • 

Source Emissions Emission Data 

Location UnitID Constr. Datel Primary Fuel NO. TotalPM,o S02 H2SO4 

Ibs/hr Ibs/hr Ibs/hr Ibs/hr 

Horseshoe Lake 7 1963 Natural Gas 566.45 4.94 68.01 2.44E-OI 

Horseshoe Lake 8 1968 Natural Gas 1,308.41 5.30 1.75 1.7IE-02 

I Source emissions as provided by OG&E CEMS data extending from 11112002 to 12/3112005 

2 Construction dates as listed in respective facility TV permits. Source parameters listed as provided by OG&I 

Source Emissions Model Input Data 

Location UnitID S02 S04 NOx PM (coarse)4 PM (fine)4 EC SOA 

(Ib/hr) 

Horseshoe Lake 

Horseshoe Lake 

7 

8 

68.01 

1.75 

2.44E-OI 

1.7IE-02 

566.45 1.24 

1,308.41 1.32 

3.71 

3.97 

-­

-­ -­

-­

4 Condensible/filterable PM speciation were based on the following profiles: 

For Natural Gas, National Park Service guidance for NG-fired combustion turbines. http://www2.nature.nps.gov/airlPermits/ectiectGasFiredCTcfm 

PMIO-2.5 (filterable) 25% PM (coarse) 

PM2.5 (condensible) 75% PM (fine) 

Stack parameters (English) J 

Location Unit ID Heat Duty Exit Velocity Stack Height Stack Diameter Stack Temp. Base Elev.s 

(MMBtulhr) fUsee feet feet Fahrenheit (feet) 

Horseshoe Lake .7 511 42.08 189 16 296 1,076 , 

Horseshoe Lake 8 3,960 31.82 186 22 268 1,076 

Stack parameters (Metric) 

Location Unit ID Heat Duty Exit Velocity Stack Height Stack Diameter Stack Temp Base Elev. 

(MMBtu/hr) (m/s) (m) (m) Kelvin (meters) 

Horseshoe Lake 7 511 12.83 57.62 4.73 420 328 

Horseshoe Lake 8 3,960 9.70 56.71 6.71 404 328 

S Base elevations obtained from visual inspection of USGS topographic map: 

OGE BART Modeling Page 1 of 1 Trinity Consultants 


Seminole, Horseshoe Lake, Sooner, Muskogee Model Input 063701.0003 

• 


• 


• 


ApPENDIX B - DATA FILE LIST 

LIST OF SURFACE STATIONS 

Station No. Longitude 

Station 10 Location (official 10) Latitude (deg.) (deg.) 

~~Q_____~W~in~fie~I~&~A~rk~.~C~iN~.~K~S,_______~~~ 724502 _____~ 37)66 -97.033 

~YO~_____~B~art~l~es~v~ill~e.~O~K~______________~~~723565___ _____l§.].!jl____ -96.017 

~~C~D~S,_______C~h~il~d~re~ss~.~TX=_______________~~~ 723604 ______ _]_4.433 -100.283 

i!<.SEY__.___ Coffeyville Municioal. ."'K"-S.__________~"'-"-'-'<- 724519 ____.___-"'.'_'_'-'~_"!.._ 37.100 -95.567 

KCNJL ChanutelMartin John. KS 13986 37.66} -95.483 

~<;:SM Clinton-Sherman. OK 723526 .____2?_,}3L__ -99.200 

mI..Q..______.-'=D""e"'nt""on"'..~T."-'X'____________._______'_==""'__ 722589 __.__21"~00 -97.183 

~J,,'p__ El Dorado/Goodwin. AR 93992 33.217 -92.817 

~wi_ Vance AFBlEnid. O""K~____. __._______-,-",==,-,,-- 723535 ______ .~ 3_§..333 -97.917

09 ShermanlDennison. TX 722673 .______]1]IL_ -96.667 

~fD.!L_____ Frederick. OK 22222 __.____.2_4111 -98.983 

IKt1.L__._____ Fliooin. AR 55555 36.300 -92.467 

~~M____.__.____£Q.rt Smith. AR 13964 .___.1:UJ3 -94.367 

~f.x.Y.________E!l.xetteville/Q@k.~A ___._.___________--,,-==-- 93993 ________lM9Q ___ . __ -94.167

i!<.i!..A(L________Q.l!~~______________________~"""_=__ 13975 __. ____.2-flllLL_ -99.767

K..l!J;lJL______.~Hc"ob""a"-'rt"-.~O"'"K"'-.____.___________.__~""'_ 93986 __ ._____]_?.cQlLO___ 
 -99.050

K!iQI __ . ._JiQ!.~prin~AR.____________ 723415 __. ____ 	 .__________'_"'''_!..!'''__ -93.083
 . _____ .;tH§L._____ 

.!9.:t~Q__. __...__...._._...Jiarrisonf!!.QQJ:l_e Co~. AIL________. ___-'-"'<...!....! 13971 __.. _. __.. _.__1<:i-'-~JL_.__.___. -93.117 

K!AJ;l_._. ___ ._.__ Jy1.sQ?J:l.n~L~..ffl-,_KL___________.______.____-="'"'- 3923 ___. _____ll,§!1..__.... ____ -97.267 

K!C:;;L_.__..__._.__._}Yj£hi!~KL_._________.______.________-="",- 3928 _____.__._ ..XL§2.9. __._.__._ -97.433 

KJ"'~..___... __._.__._.:!.Q.PJ.i!LRegi.!:m.~LM.Q________.____.___._____--'-="-"- 723495 __....___..._....11,12.9.._.______ -94.500 

K1A_w.:. __._____.__Lav.19l!".9K..______._..____.________.____.----"-''''-''-''--- 99999 .... _..___...l~t?§l_.____ -98.417 

K"'J:!.k____..__. __. ____. . IIIII ILQJ3..___. ____L!Q.t;Ll;Il~_.S_.__. ___. __..___________ --''-'--'-'-'-___. ____ ____. -100.950

K1L"L_...__.. _______1ittLe RQf.kl..As!l!!!!L~K __________________--'-="'-"'''--_ 13963 _.. _. ___1_4)d.3.. _______ -92.233 

K"'.R.E._..._.___.____1j!!LI;..BoQPJs._~.f.!i'-!t__~_____.______.____.__----"'=""'- 723405 	___ ._______:HJ.1L.__.___._ -92.150 

KMKQ_..._....___.._~...!lJko!!eelD~vis Field. OK 11112 	 -95.367 ..--.-]-?""§~Q._-----. 

KMl--i;__....___-.¥cAlest\e!..B..£.g.!Qm!.LOK _____.____._____~"'-"- 93950 __.

______1.4J...9Q____._ -95.783 

KM...RT__.____Jylsna In\.tmational M!!.t:L_AI.L___._._.____--'-"'==-- 723435 __._____14"~Q -94.217 

IK.QKc:;;_______.9kl~Q.f!l~_c:;;iN ...9K___.____.__._______'_"_''''_'__ 13967 ___.__ ___ 22,.49_Q_____ -97.600

~...9W Norman-Westheimer. OK 723570 35.233 -97.450 

~!,28 Medicine Lod!!e. KS____________-'-"'="'-- 724520 ______.~ '-"= _____~'_""""""____I

lI9.>NC _ Ponca CiN. OK 13969 __1.§]33 __ -97.100 

l!Sr.EL___ ParsonslTri CiN. KS 745431 37.333 -95.517 

~PIDC__. Paris/Cox Field. TX 33333 3:L63L_ -95.450 

3}.283 -98.550 

KROG Ro!!ers. AR 66666 36.367 -94.100 

~SGF Sorin!!field. MO 13995 37.233 -93.383 

Oklahoma Gas & Electric Company Trinity Consultants 


Refined BART Modeling Report 063701.0003 

• 


• 


-------,-----------------------_._------------, 

[g;LG_____ Siloam SorimL ~:!.:R'-______.__._____'__'__'_'..!..._ 77777 _____._l.liJ..!!l___ -94.483 

~~f.L____Wic,llita E.a1lsJ~X_____..___. _____'_=_'= 13966 ___._ __)3.983 __ -98.517 

~~.w..Q...__..__..____~i.U~!!ter- 0IL____________________11113 '-'-'-'-"-________._lQ,..!iL____ -97.083 

~TI!.N...- 724457 ._..)_V~Q___ . ___ -92.150 ...-.--.----E9.n...1-tQ!)-~m:!..~..QQ.Q~.M-Q---.---.-----.--.=..!-"'-'-_ ..___ 

~mL ___._.__._.Ii!l.~LAFIL.QK__________________'_="'_".::!."_ 723540 __._._.____..J.~AIL_._____ -97.383

~IJS.L__.______..M£.~i[!!1J!.v. T~__.____._______.___===_'_'---_ 722541 .__._ ..__l~J'!!)___ -96.583

~I!l1.--.-.--.--I.!llsa In!. Airoort OK 13968 _____..)6.2Q..Q.____ -95.883 

!K..TXK Texarkana Rel!ionaL TX 13977 33c450 -94.000 

KYBT Bentonville. AR 88888 36.350 -94.217 

K'NQ..G...._._ EnidIWoodrinl!_ OK 44444 _____J_IiJ§L.___ -97.783 

KADM Ardmore MunicioaL OK 723555 34.300 -97.017 

LIST OF PRECIPITATION STATIONS 

Cooperative Latitude Longitude 

station ID Location/name State (deg.) (deg.) 

30130 ALUM FORK AR 34.480 -92.510 

30178 ANTOINE AR 34.020 -93.250 

30220 ARKADELPHIA 2 N AR 34.090 -93.030 

30458 BATESVILLE LIVESTOCK AR 35.500 -91.460 

30530 BEEBE AR 35.040 -91.540 

30616 BERRYVILLE 5 NW AR 36.260 -93.370 

30764 BLAKELY MOUNTAIN DAM AR 34.340 -93.120 

30798 BLUE MOUNTAIN DAM AR 35.070 -93.390 

30832 BOONEVILLE 3 SSE AR 35.060 -93.550 

30842 BOTKINBURG 3 NE AR 35.430 -92.280 

30900 BRIGGSVILLE AR 34.560 -93.300 

31020 BULL SHOALS DAM AR 36.220 -92.340 

31140 CALIONL&D AR 33.180 -92.290 

31152 CAMDEN I AR 33.360 -92.490 

31457 CLARKSVILLE 6 NE AR 35.320 -93.240 

~1582 COMPTON AR 36.050 -93.180 

~1952 DE QUEEN DAM AR 34.060 -94.220 

~2020 DIERKS DAM AR 34.090 -94.050 

~2148 DUMAS AR 33.530 -91.290 

~2300 EL DORADO GOODWIN FD AR 33.130 -92.490 

~2356 EUREKA SPRINGS 3 WNW AR 36.250 -93.470 

~2444 FA YETTEVILLE EXP STN AR 36.060 -94.100 

~2489 FERNDALE6E AR 34.460 -92.270 

~2544 FOREMAN AR 33.430 -94.230 

~2574 FORT SMITH MU, OK AR 35.200 -94.220 • Oklahoma Gas & Electric Company Trinity Consultants 

Refined BART Modeling Report 063701.0003 
• 2794 GILBERT AR 35.590 -92.430 


32810 GillHAM AR 34.120 -94.150 


2978 GREERS FERRY DAM AR 35.310 -92.000 


3132 HARDY AR 36.170 -9\.280 


33165 HARRI<:ON FAA AP AR 36.160 -93.090 


33544 HUNTSVILLE 1 SSW AR 36.040 -93.450 


34185 LEWISVILLE AR 33.220 -93.340 


34248 NORTH LITTLE ROCKIMUNICIPAL AR 34.500 -92.160 


• 

4756 MENA AR 34.340 -94.160 

134839 MILLWOOD DAM AR 33.410 -93.590 

134988 MOUNT IDA 3 SE AR 34.320 -93.350 

135110 NARROWS DAM AR 34.090 -93.430 

~5112 NASHVILLE AR 33.560 -93.510 

~5200 NIMROD DAM AR 34.570 -93.100 

135228 NORFORK DAM AR 36.150 -92.150 

135320 NORTH LITTLE ROCKIMUNICIPAL AR 34.500 -92.160 

135602 PARTHENON AR 35.570 -93.150 

135754 PINEBLUFF AR 34.140 -92.010 

135908 PRESCOTT AR 33.480 -93.230 

136393 STPAUL AR 35.490 -93.460 

136920 STUTTGART 9 ESE AR 34.280 -91.250 

~7488 WALDRON AR 34.540 -94.060 

141427 CHANUTE M JOHNSON AP KS 37.400 -95.290 

141699 COLBY 1 SW KS 39.240 -10 1.D40 

142164 DODGE CITY MU, KS KS 37.460 -99.580 

142432 FI.KHART KS 37.000 -101.530 

142980 GARDEN CITY EXP STN KS 38.000 -100.490 

143954 INDEPENDENCE KS 37.140 -95.420 

143984 lOLA 1 W KS 37.550 -95.260 

145175 MEDICINE LODGE . KS 37.170 -98.330 

147922 SUBLETTE KS 37.290 -100.500 

148830 WICHITAKS. KS 37.390 -97.260 

230789 BOLIVAR MO 37.370 -93.230 

232302 DORA MO 36.470 -92.140 

234315 JOPLIN MUNICIPAL AP MO 37.090 -94.300 

234544 KIRKSVILLE MO 40.120 -92.340 

34825 LEBANON2W MO 37.410 -92.420 

234919 I Irl(lNr, 4 N MO 37.330 

35027 LOCKWOOD MO 37.230 ~ 

• 


35307 MARSHFIELD MO 37.200 -92.550 


35594 MILLER 1 E MO 37.130 -93.500 


~36460 OZARK BEACH MO 36.400 -93080 


Oklahoma Gas & Electric Company Trinity Consultants 

Refined BART Modeling Report 063701.0003 
• 

• 

~37435 ST JOSEPH ROSECRANS MO 39.470 -94.550 

~37506 SALEM MO 37.380 -91.320 

37656 SENECA MO 36.510 -94.360 

237967 SPRING CITY MO 36.590 -94.320 

37976 SPRINGFIELDIMUN MO. MO 37.140 -93.230 

238082 STOCKTON DAM MO 37.420 -93.460 

238252 TABLE ROCK DAM MO 36.360 -93.180 

138880 WEST PLAINS MO ~£ ,," CI " 

40179 

340292 

340548 

ALTUS IRIG RES STN 

ARDMORE 

BARTLESVILLE PHILLIP 

OK 

OK 

OK 

34.350 

34.100 

36.450 -96.000 

340670 BENGAL OK 34.510 -95.050 

340908 BOISE CITY 2 E OK 36.440 -102.290 

41437 CANEY OK 34.140 -96.130 

41750 CHICKASHA EXP STN OK 35.030 -97.550 

542654 DUNCAN AIRPORT OK 34.290 -97.580 

~42849 ELKC[TY OK 35.230 -99.240 

~43407 GAGE AIRPORT OK 36.180 -99.460 

~43497 GEARY OK 35.380 -98.190 

~43740 GREAT SALT PLAINS OK 36.450 -98.080 

~44204 HOBART MUNICIPAL AP OK 34.350 ·99020 

~44978 LAKE OVERBOI .SFR OK 35.290 -97.400 

345108 LEHIGH OK 34.280 -96.130 

45589 MARSHATJ OK 36.090 -97.370 

45664 MCALESTER MUNI AP OK 34.530 -95.470 

~46130 MUSKOGEE OK 35.460 -95.200 

~46485 NOWATA OK 36.420 -95.380 

~46616 OILTON 2 SE OK 36.040 -96.340 

~46638 OKEMAH OK 35.260 -96.180 

~46661 

~46944 

OKI.A HOMA CITY, OK 

PAWNEE5N 

OK 

OK 

35.230 

36.240 

-97.360 

-96.490 

$47201 PONCA CITY MUNI AP OK 36.440 -97.060 

~47412 RANGE OK 36.330 -101.050 

347660 RIVERSIDE 4 W OK 36.470 -100.250 

348101 SHATTUCK I N OK 36.170 -99.530 

348501 STILLWATER 2 W OK 36.070 -97.060 

348992 TULSAIINTL OK. OK 36.120 -95.530 

349404 WAYNOKA OK 36.320 -98.530 

349629 WICHIT1\ MTN Wi REF OK 34.440 -98.430 

410016 ABILENE MUN TX TX 32.250 -99.410 

410211 AMARILLOIINTL. TX TX 35.130 -101.420 

411698 CHILDRESS MUNJ AP TX 34.260 -100.170 • Oklahoma Gas & Electric Company Trinity Consultants 

Refined BART Modeling Report 063701.0003 

/ 
---------- -

• 411773 CLARKSVILLE I W TX 33.370 -95.010 

~11921 COMMERCE TX 33.120 -95.560 

~n956 CONROE TX 30.200 -95.290 

~12242 DALLAS-FORT WORTHIFORT TX. TX 32.540 -97.010 

~12244 DALLAS LOVE FIELD TX 32.510 -96.510 

~12404 DENTON2SE TX 33.120 -97.060 

~13284 FORT WORTH MEACHAM F TX 32.490 -97.210 

~13285 FORT WORTH WSFO TX 32.500 -97.180 

~13370 FRISCO TX 33.090 -96.490 

~13691 GRAPEVINE DAM TX 32.570 -97.030 

~14098 HEREFORD TX 34.490 -102.240 

414375 HUNT lOW TX 30.030 -99.310 

414517 JACKSBORO TX 33.140 -98.090 

415193 LEXINGTON TX 30.250 -97.010 

415411 LUBBOCK/LUBBOCK INTL TX. TX 33.390 -101.490 

15897 MIDLOTHIAN 2 TX 32.290 -97.000 

15958 MINERAL WELLS MUN AP TX 32.470 -98.040 

TX . 

• 


416108 MOUNT PLEASANT 33.100 -95.000 


16177 NACOGDOCHES TX 31.370 -94.390 


416776 PAMPA 2 TX 35.340 -100.580 


417074 PLAINS TX 33.110 -102.500 


18623 STEPHENVILLE I N TX 32.150 -98.120 

18743 SULPHUR SPRINGS TX 33.090 -95.380 

18942 TEXARKANA TX 33.250 -94.050 

19532 WEATHERFORD TX 32.450 -97.460 

19729 WICHITA FALLS/SHEPS AFB TX TX 33.590 -98.300 

• Oklahoma Gas & Electric Company Trinity Consultants 

Refined BART Modeling Report 063701.0003 
• 
 List of USGS Terrain • Files (1·deg format) • 

37 

36 

35 

34 

33 

Dodge City-E Pratl-W Pratt-E Wichita-W Wichita-E Joplin~W Joplin-E Springfield-W Springtield-E < RolI.-w 

Perryton-E Woodward-W Woodward-E Enid-W Emd-E Tuls.-W Tulsa-E Harrison-W Hamson·E Poplar Bluff-W 

PlainviewwE Clinton-W Clinton·E Oklahoma City-W Oklahoma City-E FortSmith-W ForlSmith-E Russellville-W Russellville-E Memphis-W 

Arnarillo-E Lawton-W Lawton-E A~dmore-W Ardmore-E Me Alestei-W Me Alest.r-E Little Rock-W Little Rock-E Helena~W 

Lubbock-E Wichita fall,-W Wichita F alls-E Sherman-W Shennan~E Texarkana-W Texarkana-E EIDorado-W E! Dorad<>-E Greenwood-W 

101 100 99 98 97 96 95 94 93 92 
,. ,r.~,>/~;~:,.. .> 

List of USGS Land Use Land Cover (LULC) Files (1 :250,000 km Format) 

;:::,t

• 

38.S 

37.S 

36.5 

35.5 

34.5 

Dodge City 

Perryton 

Plainview 

Amarillo 

Lubbock 

Pratt 

Woodward 

Clinton 

Lawton 

Wichita Falls 

Wichita 

Enid 

Oklahoma City 

Ardmore 

Sherman 

Joplin 

Tulsa 

Fort Smith 

Mc Alester, Antlers, 

DeQueen, Mena 

Texarkana 

Springfield 

Harrison 

Russellville, Conway, 

Flygap Mountain, 

Mountain View 

Little Rock 

EI Dorado 

Rolla 

Poplar Bluff 

Memphis 

. Helena 

Greenwood 

102 100 98 96 94 92 
ApPENDIX C.,- MODELING INPUT/OUTPUT FILES 

Oklahoma Gas & Electric Company Trinity Consultants 

Refined BART Modeling Report 063701.0003 

~ 

..' ;~ 

. 

,;.",.:1..,;.;~' .•~c.:.:'lWt'i .M"h4ei:"~~£,~itf4