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Appendix E-7b
Roadmap for PSAT Scaled Adjustments
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VISTAS Roadmap for Calculations
Associated with the Initial Screening
of Sources for Reasonable Progress
(Four-Factor Analyses)
March 24, 2021
2
Overview
This document describes the calculations associated with the initial screening of sources for reasonable
progress (four-factor analyses). The original PSAT results were determined based on the modeled elv3
2028 SO2 and NOx emissions. The 2028 EGU and non-EGU (NEG) point emissions were updated for a
new 2028 model run based on the elv5 emissions inventory, but the original PSAT runs were not redone.
Therefore, the original PSAT results have been adjusted using the methodology described below to
reflect the updated 2028 emissions.
Task 2: Emission Inventories
https://www.metro4-sesarm.org/content/task-2-emission-inventories
VISTAS Emissions 2028 Comparisons Remodeling 200902.xlsx
• The “STATE_LEVEL_COMPARISON” tab contains EGU and NEGU state-level comparisons for the
original (elv3 modeled) and revised (elv5 inventory) SO2 and NOx emissions in the VISTAS 12-km
domain.
• The “FACILITY_COMPARISON” tab contains facility-by-facility comparisons for the original and
revised SO2 and NOx emissions in the VISTAS 12-km domain.
• The “PSAT_ANALYSIS” tab contains facility-by-facility comparisons for the original and revised
SO2 and NOx emissions for the 87 facilities with PSAT tags. The ratio of revised SO2 to original
SO2 emissions is contained in Column Q. The ratio of revised NOx to original NOx emissions is
contained in Column R. These ratios are used to adjust the original facility PSAT results under
Task 7 in “ATTACHMENT_A_PSAT_TAG_RESULTS.xlsm” to account for emission
increases/decreases associated with the revised SO2 and NOx emissions. The file containing the
adjusted impacts is called "ATTACHMENT_A_PSAT_TAG_RESULTS_adjusted_09-02-2020.xlsx."
The facility ratios are shown in Appendix A.
• The “Ratios" tab contains the state level data for VISTAS states and the RPO level data for states
outside of VISTAS states. This tab calculates the emissions ratio for NOX and for SO2 between
the elv3 modeled values and the elv5 inventory values for each state within VISTAS. It also
calculates the RPO level ratios for NOX and SO2 for CENSARA, MANE-VU, LADCO, and WRAP.
These ratios are used to adjust estimated impacts from the EGU and NEG sectors to each Class I
area. Adjusted PSAT results are found in the spreadsheet called,
"ATTACHMENT_A_PSAT_TAG_RESULTS_adjusted_09-02-2020.xlsx." The state and regional
ratios are shown in Appendix B. Within the "Ratios" tab contained in the spreadsheet, "VISTAS
Emissions 2028 Comparisons Remodeling 200902.xlsx":
o The sulfate ratio for EGUs for each VISTAS state (Column E) is the value in column D (SO2
EGUelv5 Inv) divided by the value in column C (SO2 EGU elv3 Mod).
o The sulfate ratio for NEGs for each VISTAS state (Column H) is the value in column G
(SO2 NEG elv5 inv) divided by the value in column F (SO2 NEG elv3 Mod).
o The nitrate ratio for EGUs for each VISTAS state (Column K) is the value in column J (NOX
EGU elv5 Inv) divided by the value in column I (NOx EGU elv3 Mod).
o The nitrate ratio for NEGs for each VISTAS state (Column N) is the value in column M
(NOx NEG elv5 Inv) divided by the value in column L (NOx NEG elv3 Mod).
o The sulfate ratio for EGUs for each RPO other than VISTAS (Column E) is the sum of the
SO2 emissions for that RPO in column D (SO2 EGUelv5 Inv) divided by the sum of SO2
emissions for that RPO in column C (SO2 EGUelv5 Inv).
3
o The nitrate ratio for EGUs for each RPO other than VISTAS (Column K) is the sum of the
NOX emissions for that RPO in column J (NOX EGU elv5 Inv) divided by the sum of NOX
emissions for that RPO in column I (NOX EGU elv3 Mod).
o The sulfate ratio for NEGs for each RPO other than VISTAS (Column H) is the sum of the
NOX emissions for that RPO in column M (NOX NEG elv5 Inv) divided by the sum of NOX
emissions for that RPO in column L (NOX NEG elv3 Mod).
Task 5: Area of Influence Analysis
https://www.metro4-sesarm.org/content/task-5-area-influence-analysis
VISTAS AOI Data Summary.xlsx
This Excel file contains a summary of the facility information and AOI contributions from the “POINT”
worksheet contained in in the AOI spreadsheets for each Class I area. Only facilities contributing more
than 0.1% combination of sulfate + nitrate (Column AS) are included in this summary for each Class I
area.
Each worksheet identifies one of the pertinent Class I areas. The AOI contributions for the following are
identified in each sheet:
• (facility nitrate)/(total EGU+NEGU sulfate+nitrate) Column AQ
(Combined_NO3_2028_fraction)
• (facility sulfate)/(total EGU+NEGU sulfate+nitrate) Column AR
(Combined_SO4_2028_fraction)
• (facility sulfate + facility nitrate)/(total EGU+NEGU sulfate+nitrate) Column AS
(Combined_SO4_NO3_2028_EWRT.Qd)
Task 7: Source Apportionment Modeling/Tagging
https://www.metro4-sesarm.org/content/source-apportionment-modelingtagging
ATTACHMENT_A_PSAT_TAG_RESULTS_adjusted_09-02-2020.xlsx
The data tabs in this spreadsheet (rh_results_SEC_v4_adj, rh_results_SEC_BCv4_adj,
rh_results_INDv3_adj) contain the original PSAT results in columns identified with the heading
delta_extw (20% most impaired days) and delta_extb (20% clearest days). Scaled values using the ratios
developed from the elv5 inventory are in columns designated delta_extb_adj and delta_extw_adj. The
adjusted PSAT results are based on emission ratios calculated in “VISTAS Emissions 2028 Comparisons
Remodeling 200902.xlsx ” (see Appendix B).
• Revised Facility EGU Sulfate PSAT Results = Original EGU Sulfate PSAT Results * SO2 EGU Ratio
where, SO2 EGU Ratio = (Revised EGU SO2 emissions)/(Original EGU SO2 emissions)
• Revised Facility NEGU Sulfate PSAT Results = Original NEGU Sulfate PSAT Results * SO2 NEGU
Ratio where, SO2 NEGU Ratio = (Revised NEGU SO2 emissions)/(Original NEGU SO2 emissions)
• Revised Facility EGU Nitrate PSAT Results = Original EGU Nitrate PSAT Results * NOx EGU Ratio
where, NOx EGU Ratio = (Revised EGU NOx emissions)/(Original EGU NOx emissions)
4
• Revised Facility NEGU Nitrate PSAT Results = Original NEGU Nitrate PSAT Results * NOx NEGU
Ratio where, NOx NEGU Ratio = (Revised NEGU NOx emissions)/(Original NEGU NOx emissions)
To adjust the total EGU+NEG, sulfate+nitrate contribution to visibility impairment at each Class I area,
the EGU sulfate, EGU nitrate, NEG sulfate, and NEG nitrate contributions at each Class I area were
adjusted by the respective ratio for that area (state or RPO), sector (EGU or NEG), and pollutant (sulfate
or nitrate). These adjusted values were summed to determine the scaled EGU+NEG, sulfate+nitrate
impact on each Class I area.
Since impacts of any facility are reviewed as a percentage of the total EGU+NEG, sulfate+nitrate impact
on a Class I area, revisions to the inventory affect both the numerator of the equation (the scaled PSAT
estimate of sulfate or nitrate impact from a particular facility) and the denominator of the equation (the
scaled PSAT estimate of sulfate + nitrate impact from all EGUs and NEGs on a Class I area). Appendix C
provides the original and adjusted EGU + NEG impacts for each Class I area as well as the ratios
developed from this information. To calculate the changes to the denominator, the Ratio_Class_I_Area
may be used:
• Ratio_Class_I_Area = (Original EGU sulfate + NEGU sulfate + EGU nitrate + NEGU nitrate)/
(Revised EGU sulfate + NEGU sulfate + EGU nitrate + NEGU nitrate)
This methodology allows a user to calculate a singular value for a particular Class I area and sector
impact. To make the wholesale updates to the PSAT estimated impacts at each Class I area, a pivot table
approach was used to create the ATTACHMENT_A_PSAT_TAG_RESULTS_adjusted_09-02-2020.xlsx file.
Task 7: Source Apportionment Modeling/Tagging
https://www.metro4-sesarm.org/content/source-apportionment-modelingtagging
VISTAS PSAT Percent Contribution Rankings 02-09-2021.xlsx
The VISTAS PSAT Percent Contribution Ranking 02-09-2021.xlsx, tab "comb SO4+NO3>0.0001-copy"
worksheet combines AOI information from the database provided by the VISTAS contractor
(AOI_SPREADSHEET_ANALYSIS_POINT.zip) for all facilities with a Combined_SO4_NO3_2028_EWRT.Qd
of at least 0.01% (0.0001) with original and adjusted PSAT information from
“ATTACHMENT_A_PSAT_TAG_RESULTS_adjusted_09-02-2020.xlsx”.
Tab "Facility Ratios" shows the emissions estimate for each tagged facility from the AOI analysis, the
elv3 modeling, and the elv5 modeling. It also shows the ratio applied to each facility. This information
originates in the Excel file called, "VISTAS Emissions 2028 Comparisons Remodeling 200902.xlsx."
Tab "Facility Tagging Results" shows the original, elv3 PSAT tagging results and the adjusted PSAT
tagging results based on the elv5 inventory for each facility. This information originates in the Excel file
called, "ATTACHMENT_A_PSAT_TAG_RESULTS_adjusted_09-02-2020.xlsx," tab "rh_results_INDv3_adj."
Tab "Class I EGU+NEG, S+N" shows the original, elv3 PSAT tagging results for the impact of sulfate and
nitrate from EGUs and NEGs on each Class I area for 20% most impaired days and 20% clearest days.
The tab also shows the adjusted values for each Class I area and the ratio of the original value to the
adjusted value. This information originates in the Excel file called,
"ATTACHMENT_A_PSAT_TAG_RESULTS_adjusted_09-02-2020.xlsx," tab "rh_results_SEC+BECv4_adj."
This information is provided in Appendix C.
5
Tab "Tagged Facilities Xwalk" shows the facility identification for each tagged facility, which allow
comparison of tagged and AOI results. . This information originates in the Excel file called,
"ATTACHMENT_A_PSAT_TAG_RESULTS_adjusted_09-02-2020.xlsx," tab "Facility Name xwalk."
Certain facilities were tagged for NOX and SO2 twice. Since multiple tags for a facility produced identical
PSAT results, such facilities are only listed once in tab "comb SO4+NO3>0.0001-copy." These facilities
are as follows:
Table 1: Facilities Tagged Twice
State Tag Numbers Facility FIPS and EIS ID Facility Name
FL 020/074 12123-752411 Buckeye Florida, Limited Partnership
GA 023/080 13127-3721011 Brunswick Cellulose Inc
NC 028/088 37013-8479311 PCS Phosphate Company, Inc - Aurora
NC 029/085 37087-7920511 Blue Ridge Paper Products – Canton Mill
VA 040/095 51023-5039811 Roanoke Cement Company
VA 041/093 51027-4034811 Jewell Coke Company LLP
VA 042/094 51580-5798711 Meadwestvaco Packaging Resource Group
Two facilities are scheduled to be shut down prior to 2028 but were tagged in the elv3 PSAT run. These
facilities are listed in Table 2. Under the tab "Facility Ratios," each facility is listed as having zero NOX
and SO2 emissions in 2028. State emissions totals were adjusted accordingly and are reflected in the
scaled values for EGU+NEG, Sulfate+Nitrate impacts on Class I areas in the tab "Class I EGU+NEG S+N."
These facilities are not shown in tab "comb SO4+NO3>0.0001-copy."
Table 2: Facilities with AoI of zero but included in the PSAT tagging
State Tag Numbers Facility FIPS and EIS ID Facility Name
AL 002 01053-085111 Escambia Operating Company LLC
TN 033 47001-6196011 TVA Bull Run Fossil Plant
6
Appendix A
This table provides the ratio of revised to original SO2 and NOx emissions for the 87 facilities with PSAT
tags. Green indicates emission reductions, and red indicates emission increases.
State RPO Facility FIPS - EIS
ID Facility Name
SO2 ratio,
remodeled/
original
NOX ratio,
remodeled/
original
AL VISTAS 01053-7440211 Escambia Operating Company LLC 0.199 1.000
AL VISTAS 01053-985111 Escambia Operating Company LLC 0.010 0.000
AL VISTAS 01073-1018711 DRUMMOND COMPANY, INC. 1.000 1.000
AL VISTAS 01097-1056111 Ala Power - Barry 0.499 1.000
AL VISTAS 01097-1061611 Union Oil of California - Chunchula Gas Plant 0.000 0.000
AL VISTAS 01097-949811 Akzo Nobel Chemicals Inc 1.000 1.000
AL VISTAS 01103-1000011 Nucor Steel Decatur LLC 1.000 1.000
AL VISTAS 01109-985711 Sanders Lead Co 1.000 1.000
AL VISTAS 01129-1028711 American Midstream Chatom, LLC 0.000 0.000
FL VISTAS 12005-535411 ROCKTENN CP LLC 1.000 1.000
FL VISTAS 12017-640611 DUKE ENERGY FLORIDA, INC. (DEF) 0.493 0.421
FL VISTAS 12031-640211 JEA 1.027 1.591
FL VISTAS 12033-752711 GULF POWER - Crist 0.219 0.382
FL VISTAS 12047-769711 WHITE SPRINGS AGRICULTURAL CHEMICALS,INC 0.487 0.909
FL VISTAS 12057-538611 TAMPA ELECTRIC COMPANY (TEC) 1.000 1.000
FL VISTAS 12057-716411 MOSAIC FERTILIZER, LLC 0.595 1.057
FL VISTAS 12086-3532711 HOMESTEAD CITY UTILITIES 1.000 1.000
FL VISTAS 12086-899911 TARMAC AMERICA LLC 1.000 2.701
FL VISTAS 12086-900011 FLORIDA POWER & LIGHT (PTF) 1.000 1.000
FL VISTAS 12086-900111 CEMEX CONSTRUCTION MATERIALS FL. LLC. 1.000 2.856
FL VISTAS 12089-753711 ROCK TENN CP, LLC 1.000 1.000
FL VISTAS 12089-845811 RAYONIER PERFORMANCE FIBERS LLC 1.000 1.000
FL VISTAS 12105-717711 MOSAIC FERTILIZER LLC 0.568 1.000
FL VISTAS 12105-919811 MOSAIC FERTILIZER, LLC 0.972 1.000
FL VISTAS 12123-752411 BUCKEYE FLORIDA, LIMITED PARTNERSHIP 1.000 1.000
FL VISTAS 12129-2731711 TALLAHASSEE CITY PURDOM GENERATING STA. 1.000 1.000
GA VISTAS 13015-2813011 Ga Power Company - Plant Bowen 1.000 1.000
GA VISTAS 13051-3679811 International Paper - Savannah 1.000 1.000
GA VISTAS 13103-536311
Georgia-Pacific Consumer Products LP (Savannah
River Mill) 1.000 1.000
GA VISTAS 13115-539311 TEMPLE INLAND 1.000 1.000
GA VISTAS 13127-3721011 Brunswick Cellulose Inc 1.000 1.000
KY VISTAS 21091-7352411 Century Aluminum of KY LLC 0.441 1.000
KY VISTAS 21145-6037011
Tennessee Valley Authority (TVA) - Shawnee Fossil
Plant 1.000 1.000
KY VISTAS 21177-5196711 Tennessee Valley Authority - Paradise Fossil Plant 0.004 0.238
KY VISTAS 21183-5561611 Big Rivers Electric Corp - Wilson Station 1.000 1.000
MS VISTAS 28059-6251011 Mississippi Power Company, Plant Victor J Daniel 1.000 1.000
MS VISTAS 28059-8384311 Chevron Products Company, Pascagoula Refinery 1.000 1.000
NC VISTAS 37013-8479311 PCS Phosphate Company, Inc. - Aurora 1.000 1.000
NC VISTAS 37023-8513011 SGL Carbon LLC 1.000 1.000
7
State RPO Facility FIPS - EIS
ID Facility Name
SO2 ratio,
remodeled/
original
NOX ratio,
remodeled/
original
NC VISTAS 37035-8370411
Duke Energy Carolinas, LLC - Marshall Steam
Station 0.641 0.713
NC VISTAS 37087-7920511 Blue Ridge Paper Products - Canton Mill 0.359 0.978
NC VISTAS 37117-8049311 Domtar Paper Company, LLC 1.000 1.000
SC VISTAS 45015-4120411 SANTEE COOPER CROSS GENERATING STATION 1.000 1.000
SC VISTAS 45015-4834911 ALUMAX OF SOUTH CAROLINA 1.000 1.000
SC VISTAS 45015-8306711 SCE&G WILLIAMS 1.000 1.000
SC VISTAS 45019-4973611 KAPSTONE CHARLESTON KRAFT LLC 1.000 1.000
SC VISTAS 45043-5698611 INTERNATIONAL PAPER GEORGETOWN MILL 1.000 1.000
SC VISTAS 45043-6652811 SANTEE COOPER WINYAH GENERATING STATION 1.000 1.000
TN VISTAS 47001-6196011 TVA BULL RUN FOSSIL PLANT 0.000 0.000
TN VISTAS 47093-4979911 Cemex - Knoxville Plant 1.000 1.000
TN VISTAS 47105-4129211 TATE & LYLE, Loudon 0.352 0.261
TN VISTAS 47145-4979111 TVA KINGSTON FOSSIL PLANT 0.225 0.225
TN VISTAS 47161-4979311 TVA CUMBERLAND FOSSIL PLANT 1.000 1.000
TN VISTAS 47163-3982311 EASTMAN CHEMICAL COMPANY 1.000 1.000
VA VISTAS 51023-5039811 Roanoke Cement Company 1.000 1.000
VA VISTAS 51027-4034811 Jewell Coke Company LLP 1.000 1.000
VA VISTAS 51580-5798711 Meadwestvaco Packaging Resource Group 1.000 1.000
WV VISTAS 54023-6257011
Dominion Resources, Inc. - MOUNT STORM
POWER STATION 0.449 0.487
WV VISTAS 54033-6271711 ALLEGHENY ENERGY SUPPLY CO, LLC-HARRISON 1.027 0.847
WV VISTAS 54041-6900311 EQUITRANS - COPLEY RUN CS 70 1.000 1.000
WV VISTAS 54049-4864511
AMERICAN BITUMINOUS POWER-GRANT TOWN
PLT 1.278 1.394
WV VISTAS 54051-6902311 MITCHELL PLANT 0.787 1.459
WV VISTAS 54061-16320111 LONGVIEW POWER 1.010 1.437
WV VISTAS 54061-6773611
MONONGAHELA POWER CO.- FORT MARTIN
POWER 0.626 0.873
WV VISTAS 54061-6773811 MORGANTOWN ENERGY ASSOCIATES 0.004 0.330
WV VISTAS 54073-4782811
MONONGAHELA POWER CO-PLEASANTS POWER
STA 0.684 1.042
WV VISTAS 54079-6789111
APPALACHIAN POWER COMPANY - JOHN E AMOS
PLANT 0.555 1.495
WV VISTAS 54083-6790511 GLADY 6C4350 1.000 1.000
WV VISTAS 54083-6790711 FILES CREEK 6C4340 1.000 1.000
WV VISTAS 54093-6327811 KINGSFORD MANUFACTURING COMPANY 1.000 1.000
IL
Midwest
RPO 17127-7808911 Joppa Steam 0.392 0.424
IN
Midwest
RPO 18051-7363111 Gibson 0.562 0.702
IN
Midwest
RPO 18125-7362411 INDIANAPOLIS POWER & LIGHT PETERSBURG 0.519 0.502
IN
Midwest
RPO 18129-8166111 Sigeco AB Brown South Indiana Gas & Ele 0.000 0.018
IN
Midwest
RPO 18147-8017211 INDIANA MICHIGAN POWER DBA AEP ROCKPORT 0.353 0.962
IN
Midwest
RPO 18173-8183111 Alcoa Warrick Power Plt Agc Div of AL 0.288 0.271
8
State RPO Facility FIPS - EIS
ID Facility Name
SO2 ratio,
remodeled/
original
NOX ratio,
remodeled/
original
OH
Midwest
RPO 39025-8294311
Duke Energy Ohio, Wm. H. Zimmer Station
(1413090154) 0.467 0.820
OH
Midwest
RPO 39031-8010811 Conesville Power Plant (0616000000) 0.000 0.000
OH
Midwest
RPO 39053-7983011
Ohio Valley Electric Corp., Kyger Creek Station
(0627000003) 1.258 0.685
OH
Midwest
RPO 39053-8148511
General James M. Gavin Power Plant
(0627010056) 0.525 0.983
OH
Midwest
RPO 39081-8115711
Cardinal Power Plant (Cardinal Operating
Company) (0641050002) 1.326 1.639
MD MANE-VU 24001-7763811 Luke Paper Company 0.436 1.000
PA MANE-VU 42005-3866111 GENON NE MGMT CO/KEYSTONE STA 0.370 0.773
PA MANE-VU 42063-3005111 NRG WHOLESALE GEN/SEWARD GEN STA 0.767 0.724
PA MANE-VU 42063-3005211 HOMER CITY GEN LP/ CENTER TWP 0.782 0.951
AR CENRAP 05063-1083411 ENTERGY ARKANSAS INC-INDEPENDENCE PLANT 0.426 0.317
MO CENRAP 29143-5363811 NEW MADRID POWER PLANT-MARSTON 0.665 0.923
9
Appendix B
The following table provides the ratio of revised emissions to original emissions for EGU SO2, NEGU SO2,
EGU NOx, and NEGU NOx for each state and RPO. These calculations are contained in the spreadsheet
called, "VISTAS Emissions 2028 Comparisons Remodeling 200902.xlsx." Green indicates emission
reductions, and red indicates emission increases.
State/RPO Sulfate
EGU
Ratio
Sulfate
NEG
Ratio
Nitrate
EGU
Ratio
Nitrate
NEG
Ratio
AL 0.455 0.715 0.635 0.967
FL 0.801 0.843 0.800 1.111
GA 0.944 0.997 0.929 0.998
KY 0.879 0.850 0.866 1.005
MS 0.494 0.362 0.642 1.020
NC 0.458 0.951 0.643 0.995
SC 0.951 1.001 0.813 1.033
TN 0.825 0.970 0.739 0.979
VA 0.525 1.005 0.614 1.043
WV 0.825 1.068 1.067 0.997
CENSARA 0.482 0.984 0.687 0.969
LADCO 0.571 0.956 0.687 0.966
MANE-VU 0.425 0.775 0.588 1.012
Appendix C
The following table provides the original and adjusted, sulfate and nitrate, impacts of EGUs and NEGs on various Class I areas for the 20% most impaired
days.
20% Most Impaired Days, 2028 Impacts, Inverse Megameters (Mm-1)
Class I Area
EGU NEG EGU + NEG
Nitrate (N) Sulfate (S) N+S Nitrate (N) Sulfate (S) N+S N+S
Sum,
delta_
extw
Sum,
delta_
extw_
adj
Sum,
delta_
extw
Sum,
delta_
extw_
adj
Sum,
delta_
extw
Sum,
delta_
extw_ adj
Sum,
delta_
extw
Sum,
delta_
extw_
adj
Sum,
delta_
extw
Sum,
delta_
extw_
adj
Sum,
delta_
extw
Sum,
delta_
extw_
adj
Total,
delta_
extw
Total,
delta_
extw_
adj
Ratio
ACAD 0.317 0.205 2.940 1.575 3.257 1.780 0.362 0.362 1.395 1.221 1.757 1.583 5.014 3.363 1.491
BADL 0.605 0.509 4.435 2.539 5.040 3.048 0.373 0.367 1.143 1.113 1.516 1.480 6.556 4.528 1.448
BAND 0.047 0.038 0.514 0.290 0.561 0.328 0.091 0.089 0.250 0.247 0.341 0.336 0.902 0.664 1.359
BIBE 0.034 0.024 1.913 0.961 1.947 0.985 0.051 0.050 0.562 0.541 0.613 0.591 2.560 1.576 1.625
BOAP 0.094 0.076 0.566 0.311 0.660 0.387 0.185 0.182 0.242 0.236 0.427 0.418 1.087 0.805 1.350
BOWA 1.565 1.155 5.451 2.941 7.016 4.096 1.794 1.742 2.486 2.402 4.280 4.144 11.296 8.239 1.371
BRET2 0.493 0.344 9.773 5.610 10.266 5.954 0.934 0.910 9.175 8.182 10.109 9.092 20.375 15.046 1.354
BRIG 1.970 1.291 11.498 6.103 13.468 7.394 1.933 1.917 4.755 4.214 6.688 6.130 20.156 13.524 1.490
CACR 2.090 1.474 15.985 8.159 18.075 9.634 1.623 1.576 4.222 4.042 5.845 5.618 23.920 15.252 1.568
CAVE 0.071 0.050 2.253 1.133 2.324 1.183 0.216 0.210 0.746 0.712 0.962 0.922 3.286 2.106 1.561
CHAS 0.518 0.377 8.058 5.107 8.576 5.484 0.514 0.515 4.287 3.761 4.801 4.276 13.377 9.760 1.371
COHU 0.370 0.267 12.271 7.306 12.641 7.573 0.442 0.435 4.946 4.550 5.388 4.986 18.029 12.558 1.436
DOSO 0.557 0.417 21.211 12.494 21.768 12.911 0.403 0.395 5.242 4.867 5.645 5.261 27.413 18.173 1.508
EANE 0.032 0.032 0.077 0.063 0.109 0.095 0.044 0.044 0.044 0.044 0.088 0.088 0.197 0.182 1.080
EVER 0.077 0.056 0.855 0.513 0.932 0.569 0.185 0.194 0.603 0.541 0.788 0.735 1.720 1.303 1.320
FLTO 0.032 0.032 0.077 0.063 0.109 0.095 0.044 0.044 0.044 0.044 0.088 0.088 0.197 0.182 1.080
GRGU 0.194 0.133 6.092 3.287 6.286 3.420 0.203 0.200 2.065 1.872 2.268 2.071 8.554 5.491 1.558
GRSA 0.114 0.107 0.401 0.262 0.515 0.369 0.183 0.182 0.183 0.180 0.366 0.362 0.881 0.731 1.205
GRSM 0.790 0.565 13.104 7.588 13.894 8.153 0.556 0.541 4.948 4.531 5.504 5.072 19.398 13.226 1.467
GUMO 0.071 0.050 2.253 1.133 2.324 1.183 0.216 0.210 0.746 0.712 0.962 0.922 3.286 2.106 1.561
HEGL 3.007 2.142 17.092 9.135 20.099 11.278 2.204 2.142 4.537 4.351 6.741 6.493 26.840 17.771 1.510
ISLE 1.530 1.121 6.691 3.723 8.221 4.844 1.777 1.723 3.006 2.876 4.783 4.599 13.004 9.443 1.377
JARI 0.595 0.417 14.824 8.467 15.419 8.883 0.553 0.549 4.420 4.124 4.973 4.673 20.392 13.557 1.504
JOYC 0.749 0.538 13.018 7.535 13.767 8.073 0.534 0.520 4.883 4.438 5.417 4.958 19.184 13.031 1.472
LIGO 0.317 0.226 12.462 7.058 12.779 7.284 0.295 0.288 5.107 4.695 5.402 4.983 18.181 12.266 1.482
LYBR2 0.601 0.405 9.020 4.681 9.621 5.086 0.723 0.715 3.308 2.908 4.031 3.623 13.652 8.708 1.568
MABE 0.032 0.032 0.077 0.063 0.109 0.095 0.044 0.044 0.044 0.044 0.088 0.088 0.197 0.182 1.080
MACA 2.887 2.060 20.613 12.017 23.500 14.077 2.411 2.346 7.905 7.412 10.316 9.758 33.816 23.835 1.419
MELA 0.979 0.914 2.897 2.510 3.876 3.424 0.545 0.541 1.120 1.105 1.665 1.646 5.541 5.070 1.093
MING 2.982 2.092 17.462 9.824 20.444 11.917 2.603 2.528 7.005 6.578 9.608 9.106 30.052 21.023 1.430
MOOS 0.182 0.121 2.473 1.316 2.655 1.438 0.206 0.204 1.382 1.179 1.588 1.383 4.243 2.821 1.504
11
20% Most Impaired Days, 2028 Impacts, Inverse Megameters (Mm-1)
Class I Area
EGU NEG EGU + NEG
Nitrate (N) Sulfate (S) N+S Nitrate (N) Sulfate (S) N+S N+S
Sum,
delta_
extw
Sum,
delta_
extw_
adj
Sum,
delta_
extw
Sum,
delta_
extw_
adj
Sum,
delta_
extw
Sum,
delta_
extw_ adj
Sum,
delta_
extw
Sum,
delta_
extw_
adj
Sum,
delta_
extw
Sum,
delta_
extw_
adj
Sum,
delta_
extw
Sum,
delta_
extw_
adj
Total,
delta_
extw
Total,
delta_
extw_
adj
Ratio
MOZI 0.137 0.136 0.229 0.215 0.366 0.351 0.063 0.063 0.079 0.079 0.142 0.142 0.508 0.492 1.032
OKEF 0.417 0.301 9.853 5.989 10.270 6.291 0.572 0.580 6.812 6.084 7.384 6.664 17.654 12.955 1.363
OTCR 0.581 0.436 20.759 12.249 21.340 12.685 0.420 0.411 5.169 4.824 5.589 5.235 26.929 17.919 1.503
PECO 0.049 0.042 0.424 0.242 0.473 0.284 0.076 0.075 0.188 0.185 0.264 0.259 0.737 0.543 1.356
PRRA 0.194 0.133 6.092 3.287 6.286 3.420 0.203 0.200 2.065 1.872 2.268 2.071 8.554 5.491 1.558
RAWA 0.137 0.136 0.229 0.215 0.366 0.351 0.063 0.063 0.079 0.079 0.142 0.142 0.508 0.492 1.032
ROCA 0.182 0.121 2.473 1.316 2.655 1.438 0.206 0.204 1.382 1.179 1.588 1.383 4.243 2.821 1.504
ROMA 0.838 0.616 10.570 6.363 11.408 6.980 0.954 0.963 5.904 5.541 6.858 6.503 18.266 13.483 1.355
ROMO 0.189 0.174 0.483 0.351 0.672 0.525 0.372 0.371 0.212 0.211 0.584 0.582 1.256 1.107 1.135
SACR 0.234 0.177 2.614 1.324 2.848 1.501 1.286 1.264 1.330 1.310 2.616 2.574 5.464 4.074 1.341
SAMA 0.388 0.279 8.394 4.880 8.782 5.159 0.549 0.545 6.656 5.686 7.205 6.231 15.987 11.390 1.404
SAPE 0.021 0.018 0.218 0.125 0.239 0.143 0.038 0.037 0.118 0.116 0.156 0.154 0.395 0.296 1.333
SENE 2.203 1.601 8.090 4.584 10.293 6.185 3.004 2.912 4.598 4.361 7.602 7.273 17.895 13.458 1.330
SHEN 0.707 0.522 16.874 9.342 17.581 9.864 0.481 0.474 4.438 4.048 4.919 4.522 22.500 14.387 1.564
SHRO 0.313 0.223 12.041 6.925 12.354 7.148 0.267 0.261 4.740 4.337 5.007 4.598 17.361 11.746 1.478
SIPS 1.243 0.873 14.948 8.635 16.191 9.507 1.137 1.106 5.300 4.857 6.437 5.963 22.628 15.470 1.463
SWAN 0.683 0.459 9.621 5.261 10.304 5.720 0.684 0.688 4.240 3.883 4.924 4.571 15.228 10.292 1.480
THRO 0.879 0.791 2.997 2.475 3.876 3.266 0.527 0.522 1.011 0.996 1.538 1.518 5.414 4.785 1.132
ULBE 0.260 0.245 1.023 0.808 1.283 1.052 0.095 0.093 0.389 0.379 0.484 0.472 1.767 1.525 1.159
UPBU 2.103 1.498 13.415 7.003 15.518 8.501 1.689 1.642 3.424 3.257 5.113 4.899 20.631 13.400 1.540
WEEL 0.032 0.032 0.077 0.063 0.109 0.095 0.044 0.044 0.044 0.044 0.088 0.088 0.197 0.182 1.080
WHIT 0.045 0.034 1.335 0.681 1.380 0.715 0.126 0.123 0.519 0.503 0.645 0.627 2.025 1.341 1.510
WHPE 0.049 0.042 0.424 0.242 0.473 0.284 0.076 0.075 0.188 0.185 0.264 0.259 0.737 0.543 1.356
WICA 0.590 0.541 2.547 1.726 3.137 2.268 0.476 0.473 0.660 0.651 1.136 1.123 4.273 3.391 1.260
WIMO 1.491 1.083 6.734 3.555 8.225 4.637 2.219 2.154 2.277 2.198 4.496 4.352 12.721 8.990 1.415
WOLF 0.379 0.275 9.712 5.899 10.091 6.174 0.522 0.528 6.374 5.806 6.896 6.334 16.987 12.508 1.358