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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
far downstream) Surface area of water body small compared with watershed area
CEGw=1 ug/L
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AVERAGE CONDITIONS
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Total Deposition To Watershed
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Average wet and dry deposition rates for particles =<&03 s/m2-;
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Total deposition =0.0059 s/mS-yr x 0.07 g/s = 0.000413 g/m2-yr
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1.25 E10 liters per day = 456 E10 liters per d ayy ewj--
48.734 g/yr x 1/ 456E10 = 1.07 E-8 g/I = 0.0107uq/L
3MUM CONDITIONS
Total Deposition To Watershed
Z Max wet m itklry deposition rates for particles= ty2i6s/m 2-yr
'Average wet deposition from vapor phase = p^s/m 2-yr Total deposition =0.4T&/m2-yr x 0.07^ = 0.023 g/m2-yr
Load to River Load to river = depositlorrprir squateqjeter x watershed area L = (0.029g/m2-y r )^ ffl8 EBsquaremfeter^) = 3,422,000g/yr
Concentration jrTRiver Capepdar mean flow = 1 2 5 x E4 Million Liters per Day^= 1.25 E10 liters per day
1.25T:10 liters per day = 456 E10 liters per day3/122,000 g/yr x 1/ 456E10 = 7.5 E-7 a/I = 0.75 uo/L
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COMPANY NAME
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MODELER:
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DATE:
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L W 2 0 0 0 P - L a k e s file s; receptor g rid fo r L a k e W a sh in gto n w atershed:^ f ic u la t e phase e m C S a n s d e p o sitio n
(th is receptor g rid u se d to calculate total d ep o sitio n o f v a p o r e m issio n s (w et + d ry ) to L a k e W a sh in g to n
w atershed (n o t in clu d e d in report))
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L W 2 0 0 0 y - L a k e s file s; receptor g rid fo r L a k e W a sh in gto n w atershed& a o o r p hase e m ssinifrdepositinn
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(th is recep tor g rid u se d to calculate total d e p o sitio n o f v a p o r e m issio n s (w et o n ly ) to T air- W a sh in g to n (
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\ A c tu a i0 2 - { T rin ity file s) n o d ep o sitio n , am bient air concentrations o n ly
V C o f t j (tu ax concentration an d S u rfe r p lo t g iv e n to R o b P in ch ot; n o report w ritten)
IF
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^ i A c tu a l0 3 r 2 -^ T rin ity fileg^ n o d ep osition, am bient a ir concentrations o n ly
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In s tru c tio n s fo r C a lc u la tin g T o ta l D e p o sitim i to a W a te rsh e d :
1. A fte r Tunning L a k e s m odel, in E x c e l open nmname.pos file w h ich w ill b e in a fo ld er nam ed runnam e.is in the
sam e are 's w here the L a k e s in p tit file is saved.
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2 . U se the W iz a rd to se t co lu m n b re aks and im port the file ,
3 . F o r each receptor (e ach ro w in E x c e l) set u p co lu m n s to calculate total, d ry an d w et d ep o sitio n in g/yr. T h is is
d o n e b y m u ltip ly in g the d e p o sitio n rate output from the m od el (g/m 2/yr) b y 1 0 ,0 0 0 m 2 (fo r a 100 m eter receptor
grid ).
r
4. S u m each co lu m n at the bottom o f the spreadsheet to get the totals fo r T o ta l, D r y an d W e t d ep o sitio n .
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CAB000267 EID630884
W a sh in g to n W o rk s C 8 F ile s (e x c lu d in g m o d e lin g file s)
Lake Washington Watershed-- o u tlin e o f watershed draw n b y A nd rew Hartten Little flocking Weil Field Watershed - outline oFw atershed draw n b y A nd rew Hartten
pkbn96.dep - met data file C c T A i
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CooMHeWV.dem
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CutlerWVdem
UlhockWV.dem LubeckWV.dem
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ParkersburgWV.dem
SouthParkersburgWV.dem J
- d igital terrain elevation file s fo r u se in L S C m odel
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20 0 0 E m issio n s F irst M o d e lin g R u n
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!-/ 7 -0 2 -re p o rt o f 2 0 0 0 em issions m odeling o rig in a lly subm itted to W V D A Q f - .'0
WVDAQ Presentation - presentation used in M a y 2 0 0 2 to present 2 0 0 0 e m ission s m odeling results f ',L
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Building P lot - bitm ap file fo r b u ild in g p lot plan used in m odeling reports
-
VaporScavenging C oefficients-- calculation o f m axim um coefficient to use in the m odel (based on Steve G rise '
w ork for.lhe consent ord er sub m ittal)
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Little Hocking- 2000Particulate Phase Emissions' 7 Little Hocking - 2000 Vapor Phase Emissions j
pcis-ai.v> ' r i. - t
- calculation o fto ta l d ep o sitio n fo r L ittle H o c k in g w atershed based o n 2 0 0 0 e m ission s. Included in 4 -1 7 -0 2 report.
Lake Washington - 2000 Particulate Phase Emissions
Lake Washington -2000 Vapor Phase Emissions
.
Ohio River Watershed - 2 0 0 0 Particulate Phase Emissions
.
Ohio River Watershed - 2000 Vapor Phase Emissions
-
- calculation o f total d e p o sitio n fo r the L a k e W ash in gton and O h io R iv e r w atersheds based on 2 0 0 0 em ission s.
T hese were not inclnded in the 4 -1 7 -0 2 report
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P )i2 0 0 2 E m issio n s Second M o d e lin g R a n
Modeling Reportfo r 2000E m issions-R evision 1 -- re visio n o f 4 -1 7 -0 2 report m ade after M a y m eeting (added two
1 new em ission p oin ts; im ported terrain elevations u sin g the h igh est option instead o f interpolation)
PLittle Hocking - Revised2000 Particulate Phase Emissions
y ? title Hacking - Revised2000 Vapor Phase Emissions - calculation o f total d ep o sitio n fo r L ittle H o c k in g w atershed based o n 2 0 0 0 em ission s. Included in re vise d report.
Recent M o d e lin g R u n s (2 0 0 2 and 2 0 0 3 E m issio n s)
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Stacks & Surfactant Emissions-12c --latest stack parameter and em ission s/s fio n (jjh ris Shoog_ ^ >
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2002 a nd2003 C8 Em issions--calculation o f em ission rate input (g/s) fo r m odel based o n C h ris S h o o p 's latest s/s
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C A B O 00268
EID630885
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 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 (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 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 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 USGS maps
'
Task~2: Perform a if dispersion modeling using the Industrial Source Complex Short Term 3 (1SCST3) 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 site-
specific 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.
i
Resources The following resources will be valuable In achieving the outlined objectives: > RobPinchot: Project lead and coordinator > Ta-W eiFu: Plant emission data > Cathie 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 EXD547035
A ssum ptions
(
Air emission rate = 0.07 g/sec 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
far downstream)
Surface area of water body small compared with watershed area
CEGw = 1 ug/L
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/m 2-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
1.25 E10 liters per day = 456 E10 liters per day 48,734 g/yr x 1/ 456E10 = 1.07 E-8 g/I = 0.0107 uq/L
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 =0.416 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
Concentration in River Cape 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 day . 3,422,000 g/yrx 1/ 456E10 = 7.5 E-7 g/I = 0,75 uq/L
CAB000187 EXD547036
Attorney-Client Privilege, Request for Legal Advice
DRAFT PROPOSAL Exposure Evaluation for APFO Releases from*Washington Works
O b je c tiv e
Work fs 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 (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 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 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 periorm 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 USGS maps
Task 2: Perform air dispersion modeling using the Industrial Source Complex Short Term 3 (1SCST3) 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 inhalafion and drinking water exposures from the air emission
p ath w ay.
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 site-
specific 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 EXD547018
Task 4: Report preparation. Resources The following resources will be valuabie in achieving the outlined objectives: > Rob Pinchot: Project lead and coordinator > Ta-W eiFu: Plant emission data > Cathie Barton: DuET, exposure assessment interpretation
> Debbie Mulrooney: DuET, air dispersion modeler
> 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 Cathie 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, equating to approximately $8,000 for this proposal.
CABO00170 EID547019
\
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(
CAB000171 EID547020
A ssum ptions
,
Air emission rate = 0.03 g/sec emission rate
Watershed boundary is either 5 kilometers or 10 kilometers 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 fn all directions
Total Deposition To Watershed Average wet and dry deposition rates for particles = 0.00154 s/m2-yr (via ISC and LAKES
models) Average wet deposition from vapor phase not included due to involatile nature of the
compound Total deposition =0.00154 s/m2-yr x 0.03 g/s = 4.62 E-5 o/m2-vr
Load to River Load to river = deposition per square meter x watershed area L = (4.62 E-5 g/hn2-yr) x (413.4 E6 square meters) = 19,100 g/yr
Concentration in River Cape 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 = approxim ately 0,004 uq/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 T otal deposition =0.0035 s/m2-yr x 0.03 g/3 = 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 flow = 1.25 x E4 Million Liters per Day = 1.25 E10 litem 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 = approxim ately 0.003 uo/L
CAB000172 EXD547021
