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Assumptions
Air emission rate = 0.07 gfeec emission rate
5 kilometers in each direction of source = watershed boundaries
Cape Fear River is receptor Treat as a single point discharge with complete mixing (OK because drinking water receptors
tar downstream)
Surface area of water body small compared with watershed area
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AVERAGE CONDITIONS
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Total Deposition To Watershed
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Average wet and dry depositton rates for particles ^fMSSss/mSi-'
sMonTiuiii vapot^phaso = 0.0026 s/mff-yr----
Total deposition ao.0059- s/mg-yr x 0.07 g/s = 0.000413 g/m2-yr
-^t<^ l ^ ^ ^ / Loadto River
Load to river =deposifion per square meter xwatershedapea-
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Cape Fear mean flow = 1.25 x E4 Million Liters per Day = 1.25 E10 liters per day
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CAB000262 EID547111
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CAB000263 EID547112
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CAB000265 EID547114
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Fayetteville Modeling Results
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1996 1997 1998 1999
CaseS (ug/m3) Location
0.01448 0.01854 0.01987 0.01787 0.01827
697700E 3855200N 698400E 3858600N 698400E 3858600N 698400E 3858600N 698400E 3B58600N
Release Rate (g/s) Stack Flow Rate (scfm) Stack Velocity (ft/s) Stack Height (ft) BuildingHeight (ft) Stack Diameter (ft) Temperature (K)
0.03 4710 100
85 55 1 298
GAB000155 EID547004
"Washington Works C8 Modeling files
2000 Emissions ^|h^l<-^ i^i'S^'
modeling files to support report: Modeling Reportfor3000 Emissions --Revision.
ActnalOOr -Trinity files; no deposition, ambient air concentrations only
ActOOPr -- Lakes files; full receptor grid; R3rticulate phase emissions deposition
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^ (maximum deposition rate included in report; rfris receptor grid used to calculate total deposition of
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particniate emissions (wet +dry) to Ohio River watershedfaot included in report))
ActOOVr - Lakes files; full receptor grid; vatior.Bhase emissions deposition
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(maximum deposition rate included in report; this receptor grid used to calculate total deposition of vapor
emissions (wet only) to Ohio River watershed (not included in report))
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LHZOOOPr - Lakes files; receptor grid for Little Hoclong well watershed; particniate phase emissions deposition ^
( (this receptor grid used to calculate total deposition of paniculate emissions (wet + dry) to Little Hocking /
well watetshed (included in report))
LEGOOOVr -- Lalces files; receptor grid for Uttle Hfldangjvell watershed; vapor phase emissions deposition
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(this receptor grid used to calculate total deposition of vapor emissions (wet only) to Little Hocking well \
watershed (included in report))
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LW2000P -Lakes files; receptor grid for Late WashmBtonwatershed:^^aiatephaseaBaSans deposition (this receptor grid used to calculate total depositionof vapor emissions, (wet + dry) to Lake Washington watershed (not included in report))
LWZOOQy ~ Lakes Hies; receptor grid for LateW^ungton watershedfifflBcr phase einissicnMeposition (this receptor grid used to calculate total deposition of vapor emissions (wet only) to Late Washington watershed (not included m report))
2002 Emissions
Actuai02 -<IMnity files] no deposition, ambient air concentrations only (max concentration and Snrfer plot given to Rob Pinchot; no report written)
2003 Emissions
Actual03r2 -^Tiimty files} no deposition, ambient air concentrations only (max concentration and Sorter plot given to Rob'Pinchot; no report written)
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Instructions for Calculating Total Deposition to a Watershed:
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' ~ \ 1. After running Lakes model, in Excel open nmimme-pos file which will be in a folder named runnameJS in the
same are's where the Lakes input file is saved.
2. Use the Wizard to set column breaks and import the file.
3- For each receptor (each. row in Excel) set up columns to calculate total, dry and wet deposition in gfyi. This is done by multiplying the deposition rate output from the model (g/nAyr) by 10,000m2 (for a 100 meter receptor grid).
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4. Sum each column at the bottom of the spreadsheet to get the totals for Total, Dry and Wet deposition.
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CAS000267 EID630884
Washington Works C8 Files (excluding nnnleling Gles)
Late Washington Watershed - outline of watershed drawn by Andrew Hartten Little Hocking Well Field Watershed - outline ofwatershed drawn by Andrew Haitten
piiAan96.rfep -met data file Ccr>-U uco.t.tafc.
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SouthParkersburgWV.dem - digital terrain elevation files for use in ISC model
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2000 Emissions Pirst Modeling Rim
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WDAw Final Modeling Report 4-17-02 - report of 2000 emissions modeling originally submitted to
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Building Plot - bitmap file for building plot plan used in modeling reports
Vapor Scavenging Coefficients - calculation of maximum coefficient to use in the model (based on Steve Grise'
work for.lhe consent order submittal)
f Little Hocking -2000Paniculate Phase Emissions' / Little Hocking -2000 Vapor Phase Emissions .
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\ - calculation of-tolfll deposition for Little Blocking watershed based on 2000 emissions. Included in 4-17-02 report
Late Washington - 2000 Paniculate Phase Emissions Lake Washington - 2000 Vapor Phase Emissions Ohio River Watershed - 2000 Paniculate Phase Emissions Ohio River Watershed - 2000 Vapor Phase Emissions - calculation of total deposition for the Lake Washington and Ohio River watersheds based on 2000 emissions.
^ These were not included in the 4-17-02 report
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2002 Emissions Second Modeling Run
Modeling Report for 2000 Emissions -Revision 7 -revision of 4-17-02 report made after May meeting (added two new emission points; imported terrain elevations using the highest option instead of interpolation)
'Little Socking - Revised 2000 Paniculate Phase Emissions Litle Hocking - Revised 2000 Vapor Phase Emissions
calculation of total deposition for Little Hocking watershed based on 2000 emissions. Included in revised report.
-^SCSKf-k-W" Recent Modeling Runs (2002 and 2003 Emissions)
,_....- Stacks & Surfactant Emissions-ISc -- latest stack parameter and emission s/s fton^Chris Shogn__^>
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CAB000268
EID630885
Attorney-Client Privilege, Request for Legal Advioe
DRAFT PROPOSAL ' Exposure Evaluation for APFO Releases from Washington Works
Objective Work is proposed to model the dispersion characteristics of APFO air emissions from Washington Works operations. These modeling results will be used to calculate Potential inhalation exposure to nearby Lubec community residents as compared with the
corporate Community Exposure Guideline for APFO in air (CEC/^. Conservative estimates of APFO mass loading to the Ohio River based on total deposition to
the land surface.
This information will be used to determine the relative contribution of air and wastewater emissions to the aggregate exposure of local residents. It will then be possible for the site to target its reduction program toward ihe most critical emissions sources.
Background Washington Works is interested in understanding the aggregate exposure of any community resident to releases of APFO through drinking water Ingestlon and Inhalation. Although the site has considerable sampling Information for the drinking water, air sampling is more difficult and expensive to perform. As a good and widely accepted alternative, the site will perform modeling using an EPA approved air dispersion modal.
Scope of Work ThiB section describes 4 tasks required to meet the above objectives.
Task 1: Gather relevant site Information and modeling input parameters. The following information is required:
Average annual emission rates for each source
Source characteristics, such as airflow rate, exit velocity, stack dimensions, and temperature.
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Site-specific meteorology
Site-specific topography Site building information
Local USGS maps
Task'Z: Perform aiTdispersibn modelbtg Using the"Industrial Source Complex Short Term 3 (ISCST3) Model. Output from the model will include
annual average vapor phase concentrations (ug/m3) over a 10 km radius and identification of the location of maximum concentration In the Lubec community
maximum and average wet deposition (mg/m2/yr) over a 10 km radius maximum and average dry deposition (mg/m2/yr) over a 10 km radius
Task 3: Evaluation of inhalation and drinking water exposures from the air emission
pathway. This task will include use of the Industrial Risk Assessment Program software from Lakes EnvironmentaL This program translates the ISCST3 results into a form for determining sitespecific exposure information. Results of task 3 will include
Comparison of maximum vapor phase concentration for Lubec community determined in Task 2 with the CEGA.
Calculation of the total dry and wet deposition in the watershed of interest and the resulting mass loading to the Ohio River
Evaluation of the relative contribution of air and wastewater emissions to the aggregate exposure of local residents.'
CAB000185 EID547034
Task 4: Report preparation. Resources The following resources will be valuable in achieving the outlined objectives: > Rob Pinchot: Project lead and coordinator > Ta-WeiFu: Plant emission data > Calhie Barton: DuET, exposure assessment Interpretation > Debbie Mulrooney: DuET, air dispersion modeler > Andrew Harden: Interpretation of wet and dry deposition rates > Tim Bingman: Integration of all exposure modeling results and interpretation DuET Cost Estimate SBU funding will be needed to fund Cathie Barton and Debbie Mulrooney's time and to procure any meteorological data and maps that are needed. DuET estimates approximately 50 total man-hours of work, equating to approximately $8,000 for
this proposal.
CAB000186 EID547035
Assumptions Air emission rate = 0.07 g/sec emission rate 5 kitometers in each direction of source = watershed boundaries
Cape Fear River Is receptor Treat as a single point discharge with complete mixing (OK because far downstream) Surface area of water body small compared with watershed area CEGw = 1 ug/L
drinking
water
receptors
AVERAGE CONDITIONS
Total Deposition To Watershed Average wet and dry deposition rates for particles = 0.0033 s/m2-yr Average wet deposition from vapor phase = 0.0026 s/m2-yr Total deposition =0.0059 s/m2-yr x 0.07 g/s = 0.000413 g/m2-yr
Load to River
Load to river = deposition per square meter x watershed area
L= (0.000413 g/m2-yr) x (118 E6 square meters) = 48,734 g/yr
Concentration in River
Cape Fear mean flow .= 1.25 x E4 Million Liters per Day = 1.25 E10 liters per day = 456 E10 liters per day 48.734 q/vr x 1/ 456E10 = 1.07 E-8 a/I = 0.0107 un/L
1.25 E10 liters per day
MAXIMUM CONDITIONS
Total Deposition To Watershed Max wet and dry deposition rates for particles = 0.216 s/m2-yr Average wet deposition from vapor phase = 0.2 s/m2-yr Total deposition =0.418 s/m2-yr x 0.07 g/s = 0.029 g/m2-yr
Load to River Load to river = deposition per square meter x watershed area L = (0.029 g/m2-yr) x (118 E6 square meters) = 3,422,000 g/yr
ConcentraUon in River
Cape Pear mean flow = 1.25 x E4 Million Liters per Day = 1.25 E10 liters per day = 456 E10 liters per day . 3.422,000 g/yrx 1/ 456E10 = 7.5 E-7 g/l = 0.75 ug/L
125 E10 liters per day
CAB000187 EXD547036
Attorney-Client Privilege, Request for Legal Advice
DRAFT PROPOSAL Exposure Evaluation for APFO Releases from' Washington Works
Objective Work is proposed to model the dispersion characteristics of APPO air emissions from Washington Works operations. These modeling results will be used to calculate Potential inhalation exposure to nearby Lubec community residents as compared with the
corporate Community Exposure Guideline for APFO In air (CEGA). Conservative estimates of APFO mass loading to the Ohio River based on total deposition to
the land surface.
This information will be used to determine the relative contribution or air and wastewater emissions to the aggregate exposure of local residents. It will then be possible for the site to target its reduction program toward the most critical emissions sources.
Background Washington Works Is Interested in understanding the aggregate exposure of any community resident to releases of APFO through drinking water ingestion and inhalation. Although the site has considerable sampling information for the drinking water, air sampling is more difficult and expensive to perform. As a good and widely accepted alternative, the site will perform modeling using an EPA approved air dispersion model.
Scope of Work This section describes 4 tasks required to meet the above objectives.
Task 1: Gather relevant site information and modeling input parameters. The following information is required:
Average annual emission rates for each source Source characteristics, such as airflow rate, exit velocity, stack dimensions, and temperature. Site-specific meteorology Site-specific topography Site building information
Local uses maps
Task 2: Perform air dispersion modeling using the Industrial Source Complex Short Term 3 (ISCST3) Model Output from the model will include annual average vapor phase concentrations (ug/m3) over a 10 km radius and identification of
the location of maximum concentration in the Lubec community maximum and average wet deposition (mg/mS/yr) over a 10 km radius maximum and average dry deposition (mg/m2/yr) over a 10 km radius
Task 3: Evaluation of inhalation and drinking water exposures from the air emission pathway. This task .will include use of the Industrial Risk Assessment Program software from Lakes Environmental. This program translates the ISCST3 results into a form for determining sitespecific exposure information. Results of task 3 wilt include Comparison of maximum vapor phase concentration for Lubec community determined in
Task 2 with the CEGA Calculation of the total dry and wet deposition in the watershed of interest and the resulting
mass loading to the Ohio River Evaluation of the relative contribution of air and wastewater emissions to the aggregate
exposure of local residents.
CAB000169
EID547018
Task 4: Report preparation. Resources The following resources will be valuable in achieving the outlined objectives: > Rob Ptnchot Project lead and coordinator > Ta-WeiFu: Plant emission data > Cathie Barton: DuET, exposure assessment interpretation > Debbie Mulrooney: DuET, air dispersion modeier > Andrew Hartten: Interpretation of wet and dry deposition rates > Tim Bingman: Integration of all exposure modeling results and interpretation DuET Cost Estimate SBU funding will be needed to fund Cathia Barton and Debbie Muirooney's time and to procure any meteorological data and maps that are needed. DuET estimates approximately 50 total man-hours of work, equaling to approidmately $8,000 for
this proposal.
CAB000170 EID547019
CAB000171 EID547020
Assumptions
.
Air emission rate = 0.03 g/sec emission rate
Watershed boundary is either 5 kilometers or 10 ta'lomelers in each direction (both evaluated)
Cape Fear River is receptor Treat as a single point discharge with complete mixing (OK because drinking water receptors
far downstream)
Surface area of water body small compared with watershed area CEGw = 1 ug/L
AVERAGE CONDITIONS - 10 kilometer range from the source in all directions
Total Deposition To Watershed Average wet and dry deposition rates for particles = 0.00154 s/m2-yr (via ISO and LAKES
models)
Average wet deposition from vapor phase not included due to involatils natura of the compound
Total deposition =0.00154 s/m2-yr x 0.03 g/s = 4.62 E-5 g/m2-vr
Load to River Load to river = deposition per square metar x watershed area L = (4.62 E-5 g/m2-yr) x (413.4 E6 square meters) = 19,100 g/yr
Concentration in River Gape Fear mean flow = 1 -25,x E4 Million Liters per Day = 1.25 E10 liters per day 1-25 E10 liters per day =: 456 E10 liters per year 19.100 g/yr x 1/ 456E10 = 4.2 E-9 g/1= approximately 0.004 ug/L
AVERAGE CONDITIONS - 5 kilometer range from the source in all directions
Total Deposition To Watershed
Average wet and dry deposition rates for particles = 0.0035 sAn2-yr Average wet deposition from vapor phase not Included due to involatile nature of the
compound
Total deposition =0.0035 s/m2-yr x 0.03 g/s = 0.000105 g/m2-yr
Load to River
Load to river = deposition per square meter x watershed area L = (0.000105 g/m2-yr) x (118.8 E6 square meters) = 12,500 g/yr
Concentration in River
Cape Fear mean Bow = 1.25 x E4 Million Liters per Day = 1.25 E10 liters per day 1.25 E10 liters per day = 456 E10 liters per year 12.500 g/yr x 1/ 456E10 = 2.74 E-9 g/l = approximately 0.003 ug/L
CAB000172 EID547021