2020 NEI Errata
The following errors were discovered after the release of the 2020 NEI on March 31, 2023. This is living
document, meaning that as we receive notification of issues with the NEI, we will update this document with the
most-recently identified issues appearing at the top.
Initial set of issues: May 22, 2023
Point Inventory, VOC, Oregon:
On May 3, 2023, David Broderick of ORDEQ edited VOC at EIS Facility 19085411 SunPower Manufacturing
Oregon, LLC Emission Unit = "MB" from 2489 Tons to 2489 Lbs in the State dataset only. The value in the "2020
NEI" selection was tagged, such that when 2021 NEI selection is re-run next that value will not be used as a gap
fill. The 2021 NEI draft run April 30, 2023, contains the 2489 Tons value.
Point Inventory, Mercury (Hg), New York:
The following Hg emissions in the 2020NEI are outlier values, are likely overestimated, and were removed from
the mercury summary information provided in section 2.7 the 2020NEI TSD.
FIPS
code
EIS Facility
ID
Facility Name
EIS Unit
ID
EIS Process
ID
Hg emissions
(lb)
36109
8542311
CORNELL UNIVERSITY MAIN
CAMPUS
230013
20608614
37.52
36109
8542311
CORNELL UNIVERSITY MAIN
CAMPUS
230013
20608314
16.80
36109
8542311
CORNELL UNIVERSITY MAIN
CAMPUS
230013
20607714
3104.50
36103
8452311
BROOKHAVEN NATIONAL
LABORATORY
578913
17949314
265.51
36103
8452311
BROOKHAVEN NATIONAL
LABORATORY
64116813
88912714
1823.50
Point Inventory, PAH/POM, Georgia
Emissions assigned to Pollutant Code 246 (Polycyclic Organic Matter as 7-PAH) at Hartsfield-Jackson Atlanta
International Airport (EIS Facility ID 9748811) in the below table should instead be assigned to Pollutant Code
250 (PAH/POM - Unspecified).
EIS
Process ID
Emissions Process
Description
| SCC Code
2020
Emissions
(tons)
Source Data Set
EIS Emissions Comment
84961514
Aircraft/GSE/Diesel
| 2270008005
0.0231397
2020EPA_HAPAug
2020GADNR submitted VOC of 6.899945
TON times ratio of 3.354E-03, based on
augmentation description: 119GROC
99985914
{null}
| 2275070000
0.0343607
2020EPA_HAPAug
2020GADNR submitted VOC of 10.24592
TON times ratio of 3.354E-03, based on
augmentation description: 119GROC
-------
Nonpoint Inventory, Oil and Gas:
Pipeline Blowdowns and Pigging emissions
A new source was added this NEI cycle to the oil and gas sector. Pipeline Blowdowns and Pigging (SCC=
2310021801) emissions were estimated using US EPA Greenhouse Gas Reporting Program (GHGRP) data. These
Pipeline Blowdowns and Pigging emissions included county-level estimates of VOC, benzene, toluene,
ethylbenzene, and xylene (BTEX). These emissions estimates were calculated outside of the Oil and Gas Tool
and submitted to EIS separately from the Oil and Gas Tool emissions. These emissions were considered EPA
default emissions and SLTs had the opportunity to submit their own Pipeline Blowdowns and Pigging (e.g., Utah)
emissions and/or accept/omit these emissions using the Nonpoint Survey. Unfortunately, these EPA default
Pipeline Blowdowns and Pigging emissions did not get into the 2020 NEI release for the states that accepted
these emissions due to EIS tagging issues. As a result, the following VOC and BTEX emissions were erroneously
omitted from the 2020NEI:
State
VOC(tpy)
Benzene
(tpy)
Ethylbenzene (tpy)
Toluene
(tpy)
Xylene
(tpy)
AL
713
1.66
0.07
1.07
0.48
AK
13
0.06
0.003
0.05
0.01
AZ
73
0.33
0.02
0.29
0.08
AR
34
0.01
0.001
0.001
CO
3,608
9.40
0.47
11.47
3.57
IL
380
1.49
0.08
1.32
0.38
IN
259
0.99
0.06
0.88
0.25
KS
942
1.69
0.20
1.43
0.64
KY
854
3.78
0.21
3.37
0.96
LA
549
3.70
0.00
0.42
0.66
MD
0.0
0.00021
0.00001
0.00018
0.00005
Ml
307
1.39
0.08
1.24
0.35
MS
484
0.74
0.02
0.28
0.24
MO
43
0.04
0.0005
0.03
0.01
MT
275
1.35
0.07
1.04
0.34
NE
89
0.21
0.01
0.27
0.09
-------
State
VOC(tpy)
Benzene
(tpy)
Ethylbenzene (tpy)
Toluene
(tpy)
Xylene
(tpy)
NM
1,348
NY
202
0.92
0.05
0.82
0.23
ND
18
0.08
0.00
0.07
0.02
OH
476
2.16
0.12
1.92
0.55
OK
89
0.02
0.01
0.08
0.06
OR
9
0.04
0.002
0.04
0.01
PA
1,575
7.15
0.40
6.37
1.81
SD
5
0.02
0.001
0.02
0.01
TN
0.2
0.0010
0.0001
0.0009
0.0003
TX
6,285
7.91
0.19
3.17
2.68
UT
13
0.06
0.004
0.06
0.03
VA
1
0.00
0.0003
0.00
0.00
WV
1,300
5.89
0.33
5.25
1.49
Total:
19,941
51.09
2.42
41.00
14.96
New Mexico
EPA and the state of New Mexico worked together to exercise the point source subtraction step in the Oil and
Gas Tool during the 2020NEI development period. This point source subtraction step was used for New Mexico
because additional oil and gas point sources were submitted by New Mexico that were the same processes that
are estimated in the Oil and Gas Tool (non-point sources). This point source subtraction step is a processed
used to eliminate possible double counting of sources in the Oil and Gas Tool that are already defined in the
point source inventory. Unfortunately, the resulting non-point emissions from the point source subtraction step
for New Mexico did not get into the 2020 NEI release due to EIS tagging issues. New Mexico non-point oil and
gas emissions are overestimated as a result; this table summarizes the overestimation at the state-level:
2020NEI
(tons)
Corrected
(tons)
2020NEI -
Corrected (tons)
CO
91,980
81,426
10,555
NH3
3
3
0
NOX
62,997
49,763
13,234
PM10-PRI
1,779
1,663
116
PM25-PRI
1,771
1,655
116
-------
2020NEI
(tons)
Corrected
(tons)
2020NEI -
Corrected (tons)
S02
77,439
76,649
790
VOC
231,810
223,174
8,636
Nonpoint Inventory, Unpaved Road Dust, Washington State
Washington state submitted daily unpaved road VMT data instead of annual VMT, resulting in VMT, and the
associated emissions estimates, being a factor of 365 too low.
Default VMT
WA-submitted
VMT
Corrected
VMT
Default PM2.5
Emissions
2020 NEI PM2.5
(WA-VMT)
Corrected PM2.5
Emissions
445,950,202
785,190
286,594,350
6,642
12
4,314
Nonpoint Inventory, Industrial Fuel Combustion -Biomass, Washington State
Washington state observed that emissions for industrial biomass fuel combustion (SCC=2102008000) were a
factor of ~9 times higher in 2020 than 2017 despite State Energy Data System (SEDS) consumption data
decreasing from 74,558 (2017) to 64,453 (2020) Billion BTU (E9BTU). For the 2017 NEI, WA submitted nonpoint
fuel consumption (Option D) ICI Input Template data of 5,776 E9BTU because they believed the SEDS estimate
was too high based on available permit data and therefore estimated nonpoint industrial wood consumption at
25% the total point source value.
However, for the 2020 NEI, WA instead submitted only direct point fuel consumption (Option A) of 13,384
E9BTU, resulting in a computed nonpoint fuel consumption of 51,069 E9BTU (64,453 - 13,384), which is
approximately a factor of 9 higher than the 2017 nonpoint fuel consumption. Assuming WA intended to submit
25% their point fuel consumption for 2020, their corrected 2020 nonpoint consumption would therefore be
approximately 3,346 E9BTU, or a factor of 15 times less than that in the 2020 NEI.
2020
Corrected
2017
2020
2020 WA-
2020
2017
2017 WA-
NEI
PM2.5
NEI
SEDS
submitted
Computed
SEDS
submitted
PM2.5
PM2.5
(E9BTU)
Point
Nonpoint
(E9BTU)
Nonpoint
consumption
consumption
consumption
(E9BTU)
(E9BTU)
(E9BTU)
11,414
748
1,521
74,558
13,384
51,069
64,453
5,776
Nonpoint Inventory, Industrial and Commercial/lnst. Distillate IC Engines, Washoe County Nevada
Washoe county found calculation errors for distillate fuel ICI Engines in their submittal and would choose to use
EPA estimates. The values (tons) in the 2020 NEI (Washoe-submitted) and the preferred submittal (EPA Wagon
Wheel tool) are shown here.
see
Pollutant
Sector
2020 EPA
(Wagon Wheel)
2020 NEI
(Washoe-submitted)
2102004002
CO
Fuel Comb - Industrial Boilers, ICEs - Oil
15
3,611
2102004002
NH3
Fuel Comb - Industrial Boilers, ICEs - Oil
0.09347273
2
2102004002
NOX
Fuel Comb - Industrial Boilers, ICEs - Oil
71
3,814
2102004002
PM10-PRI
Fuel Comb - Industrial Boilers, ICEs - Oil
5
202
2102004002
PM25-PRI
Fuel Comb - Industrial Boilers, ICEs - Oil
5
202
2102004002
S02
Fuel Comb - Industrial Boilers, ICEs - Oil
5
0.20672
-------
2020 EPA
2020 NEI
see
Pollutant
Sector
(Wagon Wheel)
(Washoe-submitted)
2102004002
VOC
Fuel Comb - Industrial Boilers, ICEs - Oil
5
591
2103004002
CO
Fuel Comb - Comm/lnstitutional - Oil
0.02819474
7,160
2103004002
NH3
Fuel Comb - Comm/lnstitutional - Oil
0.000173506
3
2103004002
NOX
Fuel Comb - Comm/lnstitutional - Oil
0.1309971
6,631
2103004002
PM10-PRI
Fuel Comb - Comm/lnstitutional - Oil
0.009434395
371
2103004002
PM25-PRI
Fuel Comb - Comm/lnstitutional - Oil
0.009434395
371
2103004002
S02
Fuel Comb - Comm/lnstitutional - Oil
0.008631929
0.3676187
2103004002
VOC
Fuel Comb - Comm/lnstitutional - Oil
0.009109071
1,003
Nonpoint Inventory, Residential Wood Combustion, Minnesota
MN discovered an error in their residential wood combustion (RWC) submittal. For mercury and PM, the errors
impacted all RWC SCCs. For NOX, only EPA-certified catalytic woodstoves (inserts and freestanding) SCCs were
impacted. For S02 and VOC, EPA-certified catalytic and non-catalytic woodstoves (inserts and freestanding)
were impacted. The corrected values and those that appear in their original submittal used in the 2020 NEI are
provided here at the state level.
Pollutant
Unit of
Measure
2020 NEI
(Original Submittal)
2020
Corrected
Corrected minus
Original Submittal
% Change
Mercury
LB
100.02
12.58
-87.43
-87.4%
NOX
TON
2,673
2,632
-41
-1.5%
PM10-PRI
TON
35,348
35,521
173
0.5%
PM25-PRI
TON
34,119
35,521
1,402
4.1%
S02
TON
1,057
1,036
-21
-2.0%
VOC
TON
34,369
33,681
-688
-2.0%
------- |