EPA-450/3-77-052
December 1977
INSPECTION
OF AEROS DATA
TO DEVELOP
SYSTEM ENHANCEMENTS
U.S. ENVIRONMENTAL PROTECTION AGENCY
Office of Air and Waste Management
Office of Air Quality Planning and Standards
Research Triangle Park, North Carolina 27711
-------
EPA-450/3-77-052
INSPECTION OF AEROS DATA
TO DEVELOP
SYSTEM ENHANCEMENTS
Engineering-Science
7903 ^eslpark Drive
McLean. Virginia 22101
Contract No. 68-02-1894
EPA Project Officer: Arch McQueen
Prepared for
ENVIRONMENTAL PROTECTION AGKM.Y
Office of Air and Waste Management
Office of Air Quality Planning and Standards
Research Triangle Park, North Carolina 27711
December 1977
-------
This report is issued by the Environmental Protection Agency to report
technical data of interest to a limited number of readers. Copies are
available free of charge to Federal employees, current contractors and
grantees, and nonprofit organizations in limited quantities from the
Library Services Office (MD-35), Research Triangle Park, North Carolina
27711; or, for a fee, from the National Technical Information Service,
5285 Port Royal Road, Springfield, Virginia 22161.
This report was furnished to the Environmental Protection Agency by
Engineering-Science, 7903 Westpark Drive, McLean, Virginia 22101,
in fulfillment of Contract No. 68-02-1894. The contents of this report are
reproduced herein as received from Engineering-Science. The opinions,
findings, and conclusions expressed are those of the author and not
necessarily those of the Environmental Protection Agency. Mention of
company or product names is not to be considered as an endorsement
by the Environmental Protection Agency.
Publication No. EPA-450/3-77-052
11
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BIBLIOGRAPHIC DATA
SHEET
1. Report No.
EPA-450/3-77-052
3. Recipient's Accession No.
4. Title and Subtitle
Inspection of AEROS Data to Develop System Enhancements
5. Report Date
December 1977
6.
7. Author(s)
8. Performing Organization Rept.
No.
9. Performing Organization Name and Address
Engineering-Science
7903 Westpark Drive
McLean, Virginia 22101
10. Project 'Task 'Work Unit No.
Task Order 1
11. Contract/Grant No.
68-02-1894
12. Sponsoring Organization Name and Address
U.S. Environmental Protection Agency
Office of Air and Waste Management
Office of Air Quality Planning and Standards
Research Triangle Park. North Carolina 27711
13. Type of Report & Period
Covered
Final
14.
15. Supplementary Notes
16. Abstracts
Data from the National Emissions Data System (NEDS) and the Storage and Retrieval
of Aerometric Data (SAROAD) system were reviewed to develop enhancements to these sys-
tems. Proposed Source Classification Codes (SCCs) were reviewed, and recommendations
were made to the National Air Data Branch (NADB) for the adoption of new SCCs. The
data records coded with ten non-specific SCCs which end in -99 were reviewed to identify
more specific SCCs which could be added to the master list. Verification criteria whict
could be used to identify anomalous emissions data were tested. A proposed index to
quantify the quality of data in an emission inventory was evaluated.
17. Key Words and Document Analysis. 17a. Descriptors
Air Pollution
Emission Inventory
Source Classification Code
National Emissions Data System
Storage and Retrieval of Aerometric Data System
Air Quality Data
17b. Identifiers/Open-Ended Terms
Aerometric and Emissions Reporting System
Data Handling Systems
17c. COSATI Fie Id'Group
18. Availability Statement
Release Unlimited
19. Security Class (This
Report)
UNCLASSIFIED
20. Security Class (This
Page
UNCLASSIFIED
21. No. of P.i^
115
22. Prtce
FORM NTis-35 (Rev. 10-73) ENDORSED BY ANSI AND UNESCO.
THIS FORM MAY BE REPRODUCED
USCOMM-OC 326S-P74
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Cite availability of related parts, volumes, phases, etc. with report number.
16. Abstract. Include a brief (200 words or less) factual summary of the most significant information contained in the report.
If the report contains a significant bibliography or literature survey, mention it here.
17. Key Words and Document Analysis, (a). Descriptors. Select from the Thesaurus of Engineering and Scientific Terms the
proper authorized terms that identify the major concept of the research and are sufficiently specific and precise to be used
as index entries for cataloging.
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FORM NT1S-39 «R6V. IO-73) USCOMM-OC 82a5.p
iv
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TABLE OF CONTENTS
CHAPTER I INTRODUCTION
CHAPTER II EVALUATION OF PROPOSED AND NEW SOURCE CLASSI-
FICATION CODES
EVALUATION OF PROPOSED CODES
SCCs IDENTIFIED AS "OTHER/NOT CLASSIFIED"
GENERAL CONCLUSIONS AND RECOMMENDATIONS
CHAPTER III ENHANCEMENTS OF AEROS INSPECTION/ASSESSMENT
PROCEDURES
NEDS AUDITING PROCEDURES
SAROAD AUDITING PROCEDURES
GENERAL CONCLUSIONS AND RECOMMENDATIONS
CHAPTER IV FEASIBILITY OF A QUALITATIVE INDEX FOR NEDS
REVIEW OF PROPOSED EMISSION INVENTORY
QUALITY INDEX
CONCLUSIONS AND RECOMMENDATIONS
APPENDIX A CODES PROPOSED BY TACB
APPENDIX B CODES PROPOSED BY RADIAN
Page
1-1
II-l
II-2
11-33
11-42
III-l
III-l
111-18
111-21
IV-1
IV-1
IV-3
LIST OF TABLES
TABLE II-l SUMMARY OF CODES PROPOSED BY TACB
TABLE I1-2 SUMMARY OF CODES PROPOSED BY RADIAN
TABLE II-3 SOURCE CLASSIFICATION CODES (SCC)
RECOMMENDED FOR ADOPTION
TABLE II-4 CROSS REFERENCE TABLE FOR CHEMICALS
NORMALLY IDENTIFIED BY TRADE NAMES
TABLE II-5 CHEMICAL NAME CROSS REFERENCE TABLE
TABLE II-6 PETROCHEMICALS NOT INCLUDED IN THE MASTER LIST
II-2
II-3
II-5
11-17
11-19
11-29
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TABLE OF CONTENTS (CONT'D.)
Page
TABLE II-7
TABLE III-l
TABLE III-2
TABLE III-3
TABLE III-4
"OTHER/NOT CLASSIFIED" SCCs REVIEWED
NEDS POINT SOURCE INVENTORY DATA QUALITY
VALIDATION CHECKS
VALIDATION CRITERIA FOR STACK PARAMETERS
PERCENT OF RECORDS WHICH FAILED INDIVIDUAL
VALIDATION CRITERIA
SELECTED MINIMUM & MAXIMUM VALUE DISCRIMINATORS
FOR EPA DESIGNATED METHODS
11-35
III-3
111-13
111-16
111-19
LIST OF FIGURES
FIGURE II-l SCC REVIEW FORM
11-34
VI
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CHAPTER I
INTRODUCTION
The Aerometric and Emissions Reporting System (AEROS) handles vast
quantities of data on air quality, pollutant emissions, meteorological
information, and stack tests. AEROS data are used by the U. S. Environ-
mental Protection Agency (EPA), State and local air pollution control
agencies, State and Federal Legislators, and private contractors. The
uses of the data are manifold and varied.
The National Air Data Branch (NADB), which is charged with the super-
vision of AEROS, is concerned that the individual systems in AEROS and
the data handled by those systems may not be of sufficient quality to meet
the needs of the various users. NADB has identified some problems with
the quality of data in AEROS that may require improvements to some of the
systems that comprise AEROS. To resolve some of these specific data quality
problems, data were retrieved from the National Emissions Data System (NEDS)
and the Storage and Retrieval of Aerometric Data (SAROAD) system to examine
suspected problem areas.
Little improvement was found necessary for the SAROAD system because
it is operated in a fairly straight forward manner and requires few decisions
for users.
The NEDS system, however, had required users to make subjective decisions
because of complexities stemming from the wide variety of data in the system.
Attention was focussed on the following potential system improvements:
1. To define more specific Source Classification Codes (SCCs) and there-
by reduce the number of point sources coded in the unclassified
category. The usefulness of NEDS is impaired by the large number
of sources coded with other/not classified SCCs. Numerous new codes
proposed by the Texas Air Control Board (TACB) and the Radian
1-1
-------
Corporation were reviewed. Adoption of these proposed codes would
reduce the number of processes now coded with the indiscriminate 99
code ending and enable coders to suppoy more specific process informa-
tion to NEDS. In addition, NEDS records for ten existing 99 SCCs were
reviewed with the objective to define and reassign the records specific
codes. The feasibility of more specific SCCs being developed through
a review of existing NEDS records was also explored.
2. To refine data by enhancement of editing procedures - MADE employs
some editing routines to prevent grossly incorrect data from entering
the systems and t'o identify obviously anomalous data that call for
early verification. More sophisticated auditing systems are being
developed. Both the existing and proposed editing procedures were
reviewed, and improvements to them were recommended. Some of the
validation criteria that were recommended as a result of this
review were tested to determine the practicability of using such
audits. Maximum and minimum values of air quality data were
determined to enhance the SAROAD auditing procedures.
3. To label data for relative value. Several indices that have been
proposed to aid NADB in quantifying the quality of NEDS data were
reviewed to determine their feasibility. Most of these indices involve
age, completeness, and correctness.
Throughout this effort, established EPA methodologies found in Volumes
I through IV of the AEROS User's Manual were used. For much of the work done,
however, new, innovative approaches had to be developed. Each of these were
reviewed by the EPA Project Officer. Compilation of Air Pollutant Emission
Factors (EPA Publication No. AP-42) and Air Pollution Engineering Manual
(EPA Publication No. AP-40) were the basic references used for this study
in addition to the AEROS User's Manual.
This report consists of three chapters; each chapter deals with one of
the three main areas of this effort. In Chapter II, the review of the SCCs
1-2
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proposed by TACB and Radian is discussed and the codes recommended for ap-
proval are listed. This chapter also discusses the feasibility study of
developing new, more specific SCCs by reviewing the NEDS records of sources
currently coded with other/not classified codes. Recommendations are made;
if adopted, they should facilitate the development of new, more specific
SCCs in the future. In Chapter III, enhancements to AEROS data auditing
systems are discussed. Chapter IV reviews the feasibility of proposed
emission inventory quality indices. The Source Classification Codes pro-
posed by TACB and Radian are included in the appendices.
1-3
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CHAPTER II
EVALUATION OF PROPOSED AND NEW SOURCE CLASSIFICATION CODES
The Source Classification Codes (SCCs) are the basic "building blocks"
upon which the National Emissions Data System (NEDS) is structured. Each
SCC represents a process or process activity within a source category.. An
SCC consists of four categories of codes. The Category I code is a one-
digit code which designates the general type of emission source: external
combustion boiler, internal combustion engine, industrial process, point
source evaporation, solid waste, and miscellaneous. The next two digits,
the Category II code, further subdivides emission sources in accordance with
the particular industry or fuel type. For example, the industrial process
category (category 3-) is subdivided into chemical manufacturing, food/
agriculture processing, primary metals manufacturing, etc. The Category III
three-digit code designates a specific industry within the generalized
Category II industry such as paint manufacturing, synthetic fibers, plastics,
etc. The last two digits of the eight-digit SCC, the Category IV code,
specify the unit operation which emits the pollutants such as a dryer, kiln,
reactor, etc. The Environmental Protection Agency (EPA) publishes a master
list of SCCs and associated emission factors in Compilation of Air Pollu-
tant Emission Factors (EPA Publication No. AP-42).
EPA has identified two problems with the SCC master list which would
limit the usefulness of the system because they restrict the ability of
users to identify emissions from specific processes:
o EPA continually revises AP-42 providing emission factors for newly
identified emission points/processes and for previously undefined
sources. The SCC master list must also be revised to incorporate
these new SCC emission factors.
0 At the present time, approximately 20% of all codes in the SCC master
list are designated "other/not classified", i.e., they end in 99.
In addressing these particular problems and in an effort to upgrade the
master list, EPA initiated this contractual effort. The SCCs proposed re-
cently by the Texas Air Control Board (TACB) and Radian Corporation were
reviewed and the feasibility of developing new SCCs using the information
in the NEDS comments field associated with the "other/not classified"
codes was analyzed.
II-l
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EVALUATION OF PROPOSED CODES
Early in 1976, TACB proposed that 672 new codes be added to the SCC
master list. TACB identified the need for these codes when much of the
source data, which were reported on plant questionnaires, had to be coded
as other/not classified and, thus could not be retrieved for analysis.
Codes were then developed for processes listed in Common Petrochemical
Compounds (API Bulletin No. 2523) and EPA Selected High Pollution Processes
(EPA Publication No. 450/3-73-006-b). Codes were also developed for the
production of those chemicals not listed in the above references when the
annual emissions from the production of such chemicals were found to be
greater than 25 tons of any one criteria pollutant. Table II-l lists the
number of codes proposed for each of ten industrial classes. (A complete
list of TACB's proposed codes is included in Appendix A.)
TABLE II-l
SUMMARY OF CODES PROPOSED BY TACB
SOURCE CATEGORY NUMBER OF CODES
Chemical Manufacturing 127
Primary Metals 12
Petroleum Industry 15
Natural Gas Industry 13
Plastic Fabrication 15
Cleaning Solvents 24
Surface Coating 2
Petroleum Product Storage 17
Petrochemical Marketing/Transportation 260
Petrochemical Product Storage 187
672
As part of a study to upgrade and refine evaporative hydrocarbon
emission factors related to the petroleum industry, Radian Corporation pro-
posed 202 new SCCs. These were designed to accommodate new and/or revised
emission factors that had been developed. These proposed codes covered the
V
II-2
-------
source categories of petroleum product storage, petrochemical storage, and
petroleum product marketing/transportation. Table II-2 indicates the number
of codes proposed for each category. Appendix B contains a detailed listing
of these codes. In proposing revisions to the SCCs, Radian reviewed TAGS's
proposed codes as well as EPA's existing codes and recommended several pos-
sible actions. Those codes were reviewed for which Radian recommended one
of the following actions:
o Adoption of a proposed TAGS code without change;
0 Change of source title and emission factor for an existing
EPA code;
o Adoption of a proposed TACB code but with a different source
title and emission factor; and
o Addition of an entirely new SCC.
In order to determine if the proposed additions/revisions should be incor-
porated into the master list, all of the codes proposed by TACB and Radian
were evaluated, except those proposed by TACB for the petroleum industry
(SCC category 3-06 found in Appendix A, page 11.)
TABLE II-2
SUMMARY OF CODES PROPOSED BY RADIAN
SOURCE CATEGORY NUMBER OF CODES
Petroleum Product Storage 92
Petrochemical Product Storage 60
Petroleum Product Marketing/Transportation 50
202
Results and Recommendations
Based upon the review of the codes proposed by TACB and Radian, the
adoption of the codes listed in Table II-3 is recommended. Certain modifi-
cations to the codes proposed by TACB and Radian are recommended. These
recommended modifications are discussed below in terms of the specific industry
for which the codes were proposed rather than in general terms.
II-3
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Chemical Industry
TACB proposed 127 codes for chemical industry operations. It is
recommended that 123 new codes be added to the SCC master list and that five
existing codes be redesignated. These recommended codes are the same as those
proposed by TACB with the following exceptions:
1. The six candidate codes proposed by TACB which were to be
designated by trade names should not be adopted. A table
(see Table II-4) cross-referencing trade names and chemical
names should be provided with the SCC master list and should
include the code 99 shown in the table for use in coding the
processes.
2. Compounds should be grouped according to their chemical class.
New codes are, therefore, recommended for seven chemical
classes: alcohols, glycols, ketones, ethers, nitriles, chlo-
rides, and amines/amides. This arrangement should help to
keep the table short and compact as well as facilitate its
usage while providing for future expansion.
3. The designation of two existing codes should be changed.
Formaldehyde should be redesignated aldehyde so that SCCs
designating the production of a number of aldehydes can be
grouped. Category IV codes 01/02 should still refer to the
manufacture of formaldehyde. The existing code for ethylene
dichloride should be redesignated dichloroethane. The exist-
ing codes refer to one isomer of the compound (1, 2 dichloroe-
thane). The name change will facilitate including the second
isomer (1, 1 dichloroethane).
4. The designations of six codes proposed by TACB were changed to
facilitate grouping and/or to prevent confusion. Four of these
six codes were proposed for compounds resulting from the chlori-
nation of methane. It is recommended that these codes be grouped
under the name chloromethane. In most processes these compounds
are by-products. Because the unit operations involved in their
manufacture are similar, fewer codes will be needed in the
future to inventory these processes. The proposed general code
(§) ®
for Freon was redesignated "fluorocarbons" inasmuch as Freon
II-4
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TABLE II-3
SOURCE CLASSIFICATION CODES (SCC)
RECOMMENDED FOR ADOPTION1
INDUSTRIAL PROCESS - CHEMICAL MANUFACTURING
PLASTICS
3-01-018-03 PVC/FAB
POLYPROPYLENE/FAB
BAKELITE/FAB
HIGH DENSITY POLYETHYLENE
HIGH DENSITY POLYETHYLENE/FAB
LOW DENS POLYETHYLENE
LOW DENS POLYETHYLENE/FAB
MELAMINE
MELAMINE/FAB
POLYBUTADIENE
POLYBUTADIENE/FAB
POLYESTER
POLYESTER/FIBERGLASS REINF FAB
POLYSTYRENE
POLYSTYRENE/FAB
POLYSTYRENE/STYROFOAMFAB
POLYURETHANE
POLYURETHANE/FAB
-04
-06
-10
-11
-15
-16
-20
-21
-25
-26
-30
-31
-35
-36
-37
-40
-41
PHTHALIC ANHYDRIDE
3-01-019-05 VIA NAPHTHALENE
-10
AMINES/AMIDES
3-01-034-05
-10
-15
-20
-25
-30
-35
KETONES
3-01-091-01
-15
-10
-99
ALDEHYDES
3-01-120-01
-02
-10
-15
-20
-25
-99
VIA 0-XYLENE
DIETHYLAMINE
TERTBUTYLAMINE
ETHANOLAMINE
ETHYLENEAMINE
HEXAMETHYLENEDIAMINE
NPROPYLAMINE
UREA
ACETONE
METHYL ETHYL
METHYL ISOBUTYL
OTHER/NOT CLASFD
FORMALDEHYDE/SILV CAT
FORMALDEHYDE/MIX OXID CAT
BUTYRALDEHYDE
PARAFORMALDEHYDE
ACETALDEHYDE/VIA ETHYLENE
ACETALDEHYDE/VIA ETHANOL
OTHER/NOT CLASFD
DICHLOROETHANE
1,2 DICHLOROETHANE/SILVER CAT
1,2 DICHLOROETHANE/DIRECT CHLORNTN
3,2 DICHLOROETHANE/OTHER NOT CLASS
1,1 DICHLOROETHANE/OTHER NOT CLASS
3-01-125-01
-02
-98
-99
Units are tons of product
II-5
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TABLE II-3
SOURCE CLASSIFICATION CODES (SCC)
RECOMMENDED FOR ADOPTION! (CONTD)
DICHLOROETHENE
3-01-178-98
-99
ACETIC ACID
3-01-131-01
-05
-10
-99
1,1 DICHLOROETHENE/OTHER NOT CLASS
1,2 DICHLOROETHENE/OTHER NOT CLASS
VIA METHANOL
VIA BUTANE
VIA ACETALDEHYDE
OTHER/NOT CLASFD
ACETIC ANHYDRIDE
3-01-132-01 VIA ACETIC ACID
-05 VIA ACETALDEHYDE
-99 OTHER/NOT CLASFD
ACETONE CYANOHYDRIN
3-01-133-99 OTHER/NOT CLASFD
ACETYLENE
3-01-134-99
ACRYLATES
3-01-135-01
-05
-10
-15
-20
-25
-30
-99
ACRYLIC ACID
3-01-136-99
ANILINE
3-01-137-99
BISPHENOL A
3-01-138-99 OTHER/NOT CLASFD
CARBON DISULFIDE
3-01-139-99 OTHER/NOT CLASFD
CHLOROHYDRINS
3-01-140-99
CHLOROPRENE
3-01-141-99
CYCLOHEXANOL
3-01-142-99
CYCHLOHEXANONE
3-01-143-99
DICHLOROBUTENE
3-01-144-99 OTHER/NOT CLASFD
DIMETHYL TEREPHTHALATE
3-01-145-99 OTHER/NOT CLASFD
ETHYL ACETATE
3-01-146-99 OTHER/NOT CLASFD
OTHER/NOT CLASFD
BUTYL ACRYLATE
ETHYL ACRYLATE
METHYL ACRYLATE
BUTYL METHACRYLATE
ISOBUTYL METHACRYLATE
ETHYL METHACRYLATE
METHYL METHACRYLATE
OTHER/NOT CLASFD
OTHER/NOT CLSFD
OTHER/NOT CLASFD
OTHER/NOT CLASFD
OTHER/NOT CLASFD
OTHER/NOT CLASFD
OTHER/NOT CLASFD
Units are tons of product
II-6
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TABLE II-3
SOURCE CLASSIFICATION CODES (SCC)
RECOMMENDED FOR ADOPTION1 (CONTD)
OTHER/NOT CLASFD
OTHER/NOT CLASFD
OTHER/NOT CLASFD
VIA EPICHLOROCHYDRIN
VIA ALLYL CHLORIDE
VIA ACROLEIN-HYDROGEN PEROXIDE
VIA PROPYLENE-CHLORINE
OTHER/NOT CLASFD
ETHYL BENZENE
3-01-147-99
ETHYLENE OXIDE
3-01-148-99
FLUOROCARBONS
3-01-149-99
GLYCERINE
3-01-150-01
-05
-10
-15
-99
1,6-HEXANEDIOL
3-01-151-99 OTHER/NOT CLASFD
HYDROGEN CYANIDE
3-01-152-01 VIA METHANE/AMMONIA
-99 OTHER/NOT CLASFD
ISOCYANATES
3-01-153-99
ISOPRENE
3-01-154-99
LACTIC ACID
3-01-155-99
METHYL ACETATE
3-01-156-99 OTHER/NOT CLASFD
METHYL CHLOROFORM
3-01-157-99 OTHER/NOT CLASFD
METHYLCYCLOHEXAND
3-01-158-99 OTHER/NOT CLASFD
METHYCYCLOPENTANE
3-01-159-99 OTHER/NOT CLASFD
NITROMETHANE
3-01-160-99
OLEFINS
3-01-161-01
-05
-10
OTHER/NOT CLASFD
OTHER/NOT CLASFD
OTHER/NOT CLASFD
OTHER/NOT CLASFD
ETHYLENE
PROPYLENE
BUTYLENE
-99 OTHER/NOT CLASFD
PERCHLOROETHYLENE
3-01-162-99 OTHER/NOT CLASFD
PENTAERYTHRITOL
3-01-163-99
PHENOL
3-01-164-99
PROPYLENEOXIDE
OTHER/NOT CLASFD
OTHER/NOT CLASFD
3-01-165-99
STYRENE
3-01-166-99
OTHER/NOT CLASFD
OTHER/NOT CLASFD
"Units are tons of product
II-7
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TABLE II-3
SOURCE CLASSIFICATION CODES (SCC)
RECOMMENDED FOR ADOPTION1 (CONTD)
TETRAETHYL LEAD
3-01-167-99 OTHER/NOT CLASFD
TETRAHYDROFURAN
3-01-168-99 OTHER/NOT CLASFD
TRICHLOROETHYLENE
3-01-169-99 OTHER/NOT CLASFD
TRIMETHYLOLPROPANE
3-01-170-99 OTHER/NOT CLASFD
VINYL ACETATE
3-01-171-01
-10
-99
ALCOHOLS
3-01-172-01
-05
-10
-15
-20
-25
-30
-35
-99
GLYCOLS
3-01-173-01
-05
-10
-99
ETHERS
3-01-174-01
-05
-10
-15
-20
-99
CHLORO METHANES
3-01-175-01
-05
-10
-15
-99
NITRILES
3-01-176-01
-10
-15
-20
-25
-99
VIA ACETYLENE
VIA ETHYLENE
OTHER/NOT CLASFD
ALLYL
ETHYL
ISOBUTYL
ISOPROPYL
METHYL
NBUTYL
SECBUTYL
TERTBUTYL
OTHER/NOT CLASFD
ETHYLENE
1,3 BUTYLENE
PROPYLENE
OTHER NOT CLASFD
DIETHYL
DIISOPROPYL
1,4 DIOXANE
DIPROPYL
METHYL PROPYL
OTHER NOT CLASFD
METHYL CHLORIDE
METHYLENE CHLORIDE
CARBON TETRACHLORIDE
CHLOROFORM
OTHER NOT CLASFD
ACETONITRILE
ACRYLONITRILE
ADIPONITRILE/VIA ADIPIC ACID
ADIPONITRILE/VIA BUTADIENE
METHACRYLONITRILE
OTHER NOT CLASFD
Units are tons of product
II-8
-------
TABLE II-3
SOURCE CLASSIFICATION CODES (SCC)
RECOMMENDED FOR ADOPTION1 (CONTD)
CHLORIDES
3-01-177-01 ALLYL CHLORIDE
-05 ETHYL CHLORIDE
-10 NBUTYL CHLORIDE
-15 VINYL CHLORIDE
-99 OTHER/NOT CLASFD
Units are tons of product
II-9
-------
TABLE II-3
SOURCE CLASSIFICATION CODES (SCC)
RECOMMENDED FOR ADOPTION1 (CONTD)
INDUSTRIAL PROCESS - PRIMARY METALS
ALUMINUM ORE - ELECTRO REDUC
3-03-001-06 INGOT CASTING/ALLOY2
-07 ALUMINUM FLUORIDE RECOV
-08 CRYOLITE RECOV
IRON PRODUCTION
3-03-008-09 INGOT CASTING2
MAGNESIUM - ELECTROLYTIC
3-03-035-01 MAGNESIUM OXIDE KILN
-03 MAGNESIUM CHLORIDE DRYER
-05 MAGNESIUM CASTING/ALLOYING2
-99 OTHER/NOT CLASFD
Units are tons of product
o
Units are tons of metal
11-10
-------
TABLE II-3
SOURCE CLASSIFICATION CODES (SCC)
RECOMMENDED FOR ADOPTION (CONTD)
INDUSTRIAL PROCESS -NATURAL GAS IND.
COMPRESSION
3-01-001-01 SLOWDOWN
-02 SEALS
DEHYDRATION
3-10-002-01 DRYING/ETHYLNE GLY
-02 DRYING/OTHER
-10 REFRIGERATION
-20 ADSORPTION
GAS DESULFURIZATION
3-10-002-01 MEA PROG W/FLARE
-02 MEA PROC W/INCIN
-99 OTHER/NOT CLASFD
NATURAL GAS LIQUIDS
3-10-004-01 REFRIGERATION
-02 ABSORPTION
-03 FRACTIOXATION
-04 ADSORPTION
FLARES/INCINERATION
3-10-005-01 WASTE GAS
Units are million cubic feet processed
2
Units are 1000 gallons of product
3
Units are million cubic feet
11-11
-------
TABLE II-3
SOURCE CLASSIFICATION CODES (SCC)
RECOMMENDED FOR ADOPTION (CONTD)
POINT SC EVAP
FIXED ROOF
4-03-001-30
-31
-32
-33
-34
-35
-40
-41
-42
-43
-44
-45
-70
-71
-72
-73
FLOATING ROOF
4-03-002-30
-31
-32
-33
-34
-35
-40
-41
-42
-43
-44
-45
-70
-80
t - TANK CAPACITY <
* - tank capacity >
- PETROL PROD STG
BREATH-GASO #
BREATH-CRUDE #
BREATH-JP-4 #
BREATH-JET KERO #
BREATH-DIST NO. 2 #
BREATH-REAID NO. 6 #
BREATH-GASO *
BREATH-CRUDE *
BREATH-JP-4 *
BREATH-JET KERO *
BREATH-DIST NO. 2 *
BREATH-RESID NO. 6 *
WORK-JP-4
WORK-JET KERO
WORK-DIST NO. 2
WORK-RESID NO. 6
STAND STG-GASO #
STAND STG-CRUDE #
STAND STG-JP-4 #
STAND STG-JET KERO #
STAND STG-DIST NO. 2 //
STAND STG-RESID NO. 6 #
STAND STG-GASO *
STAND STG-CRUDE *
STAND STG-JP-4 *
STAND STG-JET KERO *
STAND STG-DIST. NO. 2 *
STAND STG-RESID NO. 6 *
WORKING-GASO i
WORKING-GASO *
100,000 BBL
1000,000 bbl
Units are 1,000 gallons of storage capacity for breathing and standing
storage losses and 1,000 gallons of throughput for working losses.
11-12
-------
TABLE II-3
SOURCE CLASSIFICATION CODES (SCC)
RECOMMENDED FOR ADOPTION (CONTD)
POINT SOURCE EVAPORATION - PETROCHEMICAL STORAGE
FIXED ROOF
4-04-002-13 METHYL ACRYLATE
METHYL METHACRYLATE
TETRAHYDROFURAN
VINYL ACETATE
NBUTYL CHLORIDE
ETHYLENE DICHLORIDE
METHACRYLONITRILE
METHYL ALCOHOL
METHYLCYCLOPENTANE
METHYL ETHYL KETONE
ISOPROPYL ALCOHOL
-14
-18
-19
-25
-26
-27
-28
-29
-30
-31
-32
-99
OTHER/NOT CLASFD
4-04-999-99
1, 1, 1-TRICHLOROETHANE
OTHER/NOT CLASFD
SPECIFY IN REMARKS
Units are 1,000 gallons of storage capacity.
11-13
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TABLE II-3
SOURCE CLASSIFICATION COljJES
RECOMMENDED FOR ADOPTION
(sec)
(CONTD)
POINT SOURCE EVAPORATION - PETROL MRKT TRANS
TANK CARS/TRUCKS
4-06-001-40 LD-SUBMR-NORM GASO
LD-SUBMR-NORM CRUDE
LD-SUBMR-NORM JP-4
LD-SUBMR-NORM JET KERO
LD-SUBMR-NORM DIST NO. 2
LD-SUBMR-NORM RESID NO. (
LD-SPLSH-NORM GASOLINE
LD-SPLSH-NORM CRUDE
LD-SPLSH-NORM JP-4
LD-SPLSH-NORM JET KERO
LD-SPLSH-NORM DIST NO. 2
LD-SPLSH-NORM RESID NO. (
LD-SUBMRG-BAL GASOLINE
LD-SUBMRG-BAL CRUDE
LD-SUBMRG-BAL JP-4
LD-SUBMRG-BALJET KERO
LD-SUBMRG-BAL DIST NO. 2
LD-SUBMRG-BAL RESID NO. (
LD-SPLSH-BAL GASOLINE
LD-SPLSH-BAL CRUDE
LD-SPLSH-BAL JP-4
LD-SPLSH-BAL JET KERO
LD-SPLSH-BAL DIST NO. 2
-41
-42
-43
-44
-45
-60
-61
-62
-63
-64
-65
-70
-71
-72
-73
-74
-75
-80
-81
-82
-83
-84
-85
MARINE VESSELS
4-06-002-06
-07
-08
-09
-10
-11
-12
-13
LD-SPLSH-BAL RESID NO. 6
LOADING JP-4
LOADING JET KERO
LOADING DIST. NO. 2
LOADING RESID NO. 6
LD CLEAN SHIP/GASO
LD DIRTY SHIP/GASO
LD CLEAN BARG/GASO
LD DIRTY BARG/GASO
Units are 1,000 gallons transferred.
11-14
-------
TABLE II-3
SOURCE CLASSIFICATION CODES (SCC)
RECOMMENDED FOR ADOPTION (CONTD)
POINT SOURCE EVAPORATION - PETROCHEMICAL MARKETING & TRAN
TANK CARS/TRUCKS - LOAD
4-10-001-01 ACETALDEHYDE
-02 ACETONITRILE
-03 ACRYLONITRILE
-04 BUTADIENE (TC)
-05 CARBON TETRACHLORIDE
-06 CHLOROFORM
-07 DICHLOROETHANE (TC)
-09 DIETHYLAMINE (TC)
-11 ETHYLENE OXIDE (TC)
-12 ISOPRENE
-13 METHYL ACRYLATE
-14 METHYL METHACRYLATE (TC)
-16 NPROPYLAMINE (TC)
-17 PROPYLENE OXIDE
-18 TETRAHYDROFURAN
-19 VINYL ACETATE
-20 VINYL CHLORIDE (TC)
-21 VINYLINDENE CHLORIDE (TC)
-99 OTHER/NOT CLASFD
Units are 1,000 gallons transferred.
11-15
-------
TABLE II-3
SOURCE CLASSIFICATION CODES (SCC)
RECOMMENDED FOR ADOPTION (CONTD)
POINT SOURCE EVAPORATION - PETROCHEMICAL MARKETING & TRANSPORT
MARINE VESSALS - LOAD
4-10-005-01 ACETALDEHYDE
-02 ACETRONITRILE
-04 BUTADIENE
-07 DICHLOROETHANE
-08 DIETHYL ETHER
-10 ETHYLENE
-11 ETHYLENE OXIDE
-13 METHYL ACRYLATE
-14 METHYL METHACRYLATE
-15 PROPIONALDEHYDE
-17 PROPYLENE OXIDE
-19 VINYL ACETATE
-20 VINYL CHLORIDE
-21 VINYLIDENE CHLORIDE
-99 OTHER/NOR CLASFD
Units are 1,000 gallons transferred.
11-16
-------
TABLE II-4
CROSS REFERENCE TABLE FOR CHEMICALS NORMALLY
IDENTIFIED BY TRADE NAMES
TRADE n,
NAME CHEMICAL NAME SUGGESTED SCCU'
Cellosolves Ethylene Glycol Ethers 3-01-174-99
Hydan Hydroxymethionine 3-01-999-99
(Used in the production of
Methyionine an amino acid)
Hypalon Chlorosulfonated Polyethylene 3-01-026-99
(A vulcanizable elastomer or
specialty rubber)
Voranol R Polyether Glycols 3-01-173-99
(An intermediate in the
manufacture of rigid urethane
foam. There are two other
classes of Voranols: CP and P)
Triton Specialty Cleaning Agents 3-01-009-99
(There are 20 different types
of Triton(R))
In the comments field on NEDS Card 6, the specific chemical name or
variation of the trade name should be as specified, e.g., hydroxy-
methionine, Triton CF-54, Voranol F, etc.
11-17
-------
can refer to various flurocarbon compounds. The proposed
code designation for dimethyl terephthalate plus terephthalic
acid should be changed to dimethyl terephthalate to avoid con-
fusion with the existing code for terephthalic acid. Although
some processes produce both chemicals together, most processes
produce one or the other alone.
5. Six compounds should be exempted from being grouped according
to chemical class: aniline; tetrahydrofuran; pentaerythritol;
cyclohexanol; cyclohexanone; and 1,6 hexanediol. These com-
pounds should each be given separate codes.
6. A table (see Table II-5) cross-referencing common chemical
names with the nomenclature used in the SCC master list should
be provided to NEDS users. This table should aid users greatly
in locating compounds for which there are more than one common
name.
7. Although none of the proposed codes had a process description
of "other/not classified, i.e., ending in 99", a substantial
number were described as "general". All such codes which can-
not be included in a chemical class should be redesignated as
"other/not classified" and given a code ending in "99". Such
a designation requires the coder to make a comment on NEDS
Card 6 before the data can be processed into NEDS. These com-
ments may be useful at a later date in defining more specific
codes.
Plastic Fabrication
TACB proposed 15 new codes dealing with the fabrication of plastics.
These proposed codes were to be included in a Category II series separate from
the chemical manufacturing series. Most of the proposed codes had a "general"
designation. It is recommended that these codes be included in the present
plastics group under chemical manufacturing. Thus, all codes dealing with
resin manufacturing and plastic fabrication could be found in one section.
Fewer 99 codes would be created, and users would be less likely to select 99
codes because the other codes could be more easily found. Under chemical
11-18
-------
TABLE I1-5
CHEMICAL NAME CROSS REFERENCE TABLE
CHEMICAL NAMES
NAME AS APPEARING IN SCC LIST
Die thylene diamine
Piperazidine
Piperazine
Ethylene Chloride
Ethylene Bichloride
Ethylidene Chloride
Ethylidene Bichloride
Vinylidene Chloride
Pimelin Ketone
1, 2 Epoxyethane
Hexamethylene Glycol
Hydrocyanic Acid
Formonitrile
Prussic Acid
a-Trichloroethane
1, 1, 1 Trichloroethane
Hexahydrotoluene
Ethene
Propene
Methyl Ethylene
Butene
Tetrachloroethylene
Tetramethylol Methane
Carbolic Acid
Benzenol
Hydroxybenzene
Ethyleneamine
1, 2 Bichloroethane
1, 1 Dichloroethane
1, 1 Bichloroethene
Cyclohexanone
Ethylene Oxide
1, 6 Hexanediol
Hydrogen Cyanide
Methyl Chloroform
Methyl Cyclohexane
Ethylene
Propylene
Butylene
Perchloroethylene
Pentaerythritol
Phenol
11-19
-------
TABLE II-5 (CONT'D.)
CHEMICAL NAME CROSS REFERENCE TABLE
CHEMICAL NAMES
NAME AS APPEARING IN SCC LIST
Ethenyl Benzene
Phenylethylene
Vinylbenzene
Butylene Oxide
Diethylene Oxide
Tetramethylene Oxide
1,4 Epoxy Butane
Ethylene Trichloride
2-Propanol
Ethyl Ether
Ethyl Oxide
Ethylic Ether
Isopropyl Ether
Chloromethane
Dichloromethane
Tetrachloromethane
Trichloromethane
Ethane Nitrile
Methyl Cyanide
Vinyl Cyanide
3-Chloropropene
Chloroethane
Hydrochloric Ether
Monochloroethane
Muriatic Ether
Chloroethene
Chloroethylene
Styrene
Tetrahydrofuran
Trichloroethylene
Isopropyl Alcohol
Diethyl Ether
Diisopropyl Ether
Methyl Chloride
Methylene Chloride
Carbon Tetrachloride
Chloroform
Acetontrile
Acrylonitrile
Allyl Chloride
Ethvl Chloride
Vinyl Chloride
11-20
-------
manufacturing, TACB proposed codes for the manufacture of five resins
(including high and low density polethylene). These codes should be added
to the list except for the general code for polypropylene manufacture for
which a code already exists. Codes should be created for the fabrication of
those resins for which a manufacturing code exists or is proposed.
Primary Metals Industry
It is recommended that the codes proposed by TACB be adopted with
the following exceptions:
1. Codes proposed for manufacturing alumina and iron ore calcining
should not be adopted because there are existing codes for these
processes.
2. The designation of the codes proposed for aluminum floride and
cryolite manufacture should be changed to recover because
these processes recover aluminum floride and cryolite rather
than manufacture these compounds.
3. The proposed codes for magnesium chloride neutralizers and cells
should not be included in the SCC table. The toxic nature of
the raw materials and products of these processes requires that
good engineering practice be used at all times, so that emis-
sions are strictly controlled. In fact, the cells are sealed
systems and, thus, have no emissions.
Natural Gas Industry
It is recommended that 14 new codes be adopted to cover sources
in the natural gas industry. These codes are the same as those proposed by
TACB with the following exceptions:
1. The designation of a code for fugitive losses from the com-
pression process should be redesignated as emissions from
seals in order to more accurately identify the source of
emissions.
11-21
-------
2. Four codes should be added for dehydration to reflect the four
processes used, i.e., drying/ethylene glycol, drying/other,
refrigeration, and absorption. The proposed 99 code is not
recommended.
3. The designation gas sweetening proposed by TACB should be
changed to desulfurization.
4. Because a code has been proposed for each of the processes
used in natural gas liquid by-product recovery, no 99 (other/
not classified) code is recommended for this process.
Cleaning Solvents
None of the 23 codes proposed by TACB to cover surface wiping
should be approved at this time. If the wiping operation is involved in the
degreasing process, new codes could be added to that series. However, if
surface wiping is an operation in another process, such as paint stripping,
codes specifically identifying such an operation should be added at a later
date.
Petroleum Product Storage
TACB proposed new codes for breathing and working losses from
fixed roof storage tanks and for standing storage losses from floating roof
tanks for five petroleum products: (1) liquified petroleum gas (LPG),
(2) naphtha (3) reformate, (4) alkylate, and (5) gas oil. Radian included
these TACB codes in its list of proposed codes without change. None of the
proposed codes for these five petroleum products should be adopted for the
following reasons:
0 Because LPG is normally stored in pressure vessels under an
inert gas blanket, emissions are not considered to be signi-
ficant. (Only fixed roof working and breathing codes were
proposed for LPG storage.)
0 The term "naphtha" also refers to light oil products (solvents)
and could cause confusion with petrochemical storage codes that
might be adopted later. Normally naphthas have boiling points
11-22
-------
ranging between gasoline and kerosene. Industry should be
surveyed to determine normal storage methods for these pro-
ducts.
° Reformate is a broad term used to identify products from the
thermal or catalytic reforming processes which are used to
increase the octane number of gasoline. SCCs already exist
for gasoline and other typical products of the reforming pro-
cess such as toluene.
° Alkylation is a refinery process for chemically combining iso-
paraffins with olefin hydrocarbons. Codes already exist for
specific alkylates such as isooctane.
° Gas oils are petroleum distillates such as kerosine, diesel
fuel, heating oils, and light fuel oils with boiling points
within the 232-426°C range. The inclusion of these proposed
codes in the master list could cause double counting or the
inclusion of the same emissions in NEDS twice because more de-
tailed codes for this class of petroleum products exist or may
be adopted in the future.
In addition to incorporating the TACB codes discussed above, Radian
proposed substantial changes to the existing codes for fixed roof, floating
roof, and variable vapor space storage tanks. Radian's proposed changes, a
total of 92 codes (48 for fixed roof tanks, 29 for floating roof tanks, and
15 for variable vapor space tanks), were made to replace the existing 61
codes (30 for fixed roof, 17 for floating roof, and 14 for variable vapor
space). With the exceptions noted above, most of the new codes (see Table
II-3) should be adopted in a format similar to the one proposed by Radian,
albeit with certain changes in the Category IV codes to reduce confusion.
There are some important precautions that must be taken, however. Code de-
signations should not be lightly changed. Sources which emit thousands of
tons of hydrocarbons have been coded into NEDS already, using the old codes.
Were all of these sources to be recoded, the effort could take years. If a
code is poorly delineated, it should be dropped from the listing so that its
use can be discontinued. It should be recognized, however, that there has
been considerable recent interest in verifying the adequacy of emission
factors for losses from fixed and floating roof tanks. A number of on-going
11-23
-------
studies for industry and government evidence this interest. And, althoug i
the emission factors Radian proposed were not reviewed, these new data should
be reviewed by EPA and incorporated into AP-42 and the SCC master list. To
reduce the likelihood that coders will use incorrect codes, a guideline docu-
ment to more fully explain how to use the codes is needed. In these guide-
lines the following points should be emphasized:
0 For fixed roof tanks, "working losses" include both filling
and emptying losses.
° In the comments for the Category IV codes 98/99, the coder
should specify both the liquid stored and the tank capacity.
These comments should be standardized.
° A distinction should be drawn between the old general codes
such as 4-03-001-01, "breathing-gasoline", and new more speci-
fic codes such as 4-03-001-30, "breathing-gasoline <100,000
bbls", so that a coder will be able to determine which one to
use.
° The terminology used to describe petroleum products should be
defined. These explanations should eliminate some of the con-
fusion that may arise from adopting codes specifically for such
products as JP-4, No. 2 distillate, or No. 6 residual.
o Spheres and other pressurized tanks are not included as fixed
roofs.
° The differences between floating roof and variable vapor space
tanks should be explained and examples given of each major type.
° Wetting losses (working losses from floating roof tanks caused
by the exposure of a wetted wall to the atmosphere) are usually
negligible. If a source has considerable wetting losses, the
99 code should be used and a comment noting that the source has
substantial wetting losses should be made.
(1) The American Petroleum Institute is currently sponsoring a source
testing study to determine emission factors for losses from storage
tanks.
11-24
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Petroleum Product Marketing/Transportation
There are presently four series of Category III codes for petroleum
product marketing/transportation, i.e., tank cars/trucks, marine vessels,
underground gasoline storage, and filling vehicle gasoline tanks. TACB pro-
posed no new codes for these sources. Radian did not propose new codes for
underground gasoline storage or filling vehicle gasoline tanks although
they did propose modified emission factors for the latter series. Radian
proposed 25 new codes covering the loading of tank cars/trucks to replace
the existing 18 SCCs which cover loading and unloading operations. The
existing 12 codes for loading and unloading marine vessels were to be re-
placed by a new series covering loading and transit operations. Each of
these new proposed series represents a significant departure from the existing
codes.
For the tank car/truck loading series, Radian proposed a format
for code designation which differentiates between loading methods, i.e.,
splash and submerged, and types of "carrier service", i.e., normal and
balance. A cargo carrier in normal dedicated service transports only one pro-
duct. Inasmuch as the carrier tank is not cleaned or vented between trips,
the empty tank retains a significant concentration of vapors generated by
the evaporation of product retained on the tank surfaces. These vapors are
emitted during a subsequent loading operation along with any new vapors that
may be generated. On the other hand, a cargo carrier in dedicated balance
service accumulates vapors displaced durir.g unloading operations and transports
these vapors back to the truck loading terminal. Thus, a cargo carrier
in dedicated balance service normally contains hydrocarbon saturated vapors.
It is recommended that the following actions be taken on these proposed tank
car/truck codes:
1. The new codes should not replace the existing codes but should
be incorporated in a format consistent with the present
designations. Too much effort would be needed to recode the
existing inventory if the codes were replaced.
2. Some explanation of the new codes will be necessary because
often they are much more specific than the old ones. For
(1) Balance refers to a loading system which returns the displaced vapors
to the loading vessel, thus avoiding any emission to the air.
11-25
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example, some of the new codes refer to "JP-4" rather than
"jet fuel". Some distinction must be drawn so that a coder
may know when and how to use the new codes.
3. The existing 99 code should be retained. Standardized comments
should be developed for this code so that a distinction between
balance and normal carrier service could be drawn.
With the adoption of these codes, the unused numbers available in the master
list for codes dealing with unloading operations is rather limited. Thus,
the ability to create new unloading codes is being restricted.
For the marine vessels series, Radian made a distinction between
loading clean ships and barges with gasoline and loading dirty ships and
barges with gasoline. For each of the other petroleum products considered,
i.e., crude oil, JP-4, jet kerosene, No. 2 distillate oil, and No. 6 residual
oil, Radian proposed a code designated "loading general". A separate transit
code was proposed for each of the six products. It is recommended that the
following actions be taken on these proposed codes:
1. The existing codes should not be deleted because of the extensive
effort that would be necessary for receding.
2. The transit codes should not be adopted because emissions
during transit are area source emissions, which are not
included under SCCs.
3. The remaining codes should be incorporated into the master
list except for the one for loading crude oil because there
is an existing code for this product.
4. In the guideline document, the term "loading general" should
be defined. A clear distinction should be drawn also between
the old and the new codes so that a coder can readily determine
which one to use.
Petrochemical Product Storage
TACB proposed two series of codes, i.e., one for breathing losses
and another for working losses, for emissions from the storage of 61 petro-
11-26
-------
chemicals in fixed roof tanks. Radian developed emission factors for 15 of
these petrochemicals. Codes should be adopted for twelve petrochemicals:
n-butyl chloride; ethylene chloride; methacrylonitrile; methyl aerylate;
methyl alcohol; methyl cyclopentane; methyl ethyl ketone; methyl methacry-
late; isopropyl alcohol; tetrahydrofuran; 1, 1, 1 trichloroethane; and vinyl
acetate. No distinction should be made in the code listing betveen breathing
and working losses. These petrochemicals are costly products; they are often
toxic, corrosive, flammable, reactive or volatile or are an irritant, and are
marketed on the basis of concentration and quality or reagent grade. There-
fore, one would expect that vapor control devices would be commonly used to
minimize emissions. To differentiate between breathing and working losses
may not be as important as to distinguish between controlled and uncontrolled
sources. Coders should be asked to use the 99 code to identify breathing
losses if they exist, and use the specific code for working losses. Other
recommendations include:
1. Qualifying criteria should be developed to identify petro-
chemicals for which storage codes should be developed. In this
effort, criteria were developed to identify petrochemicals
which would have a limited emission potential when stored. A
better approach would be to establish criteria which would
identify petrochemicals with a high emission potential when
stored.
2. There is little information on the storage of petrochemicals.
EPA should undertake a comprehensive investigation and docu-
mentation of industrial petrochemical storage practices.
3. A guideline document is needed to briefly explain the use of
each code in the master list. For these petrochemical storage
codes, a coder should be asked to identify working pressures,
control devices, type of tank, and the chemical stored. To
facilitate future code development, standard comments including
abbreviations should be developed to systematize the informa-
tion given for the 99 code. Such coirjnents could take the fol-
lowing format: Type of tank - chemical stored - working
pressure - control device.
11-27
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4. All sources presently coded using "Miscellaneous Organic
Storage - Other/Not Classified" (4-04-001-99) should be re-
coded using these new codes for petrochemical storage.
5. The adoption of these codes should be considered experimental
because it is not clear at this time how much, if any, benefit
will be derived from their inclusion in the master list. One
cannot determine at this time what type of hydrocarbon data
EPA needs in the NEDS data base to successfully complete future
hydrocarbon studies. All of the compounds for which codes
were developed have boiling points higher than 60°C at 760 mm
Hg and have been identified as irritants or as causing narcosis.
Thus, it is questionable whether the storage of these petro-
chemicals is an appreciable air pollution source.
The following categories of petrochemicals were eliminated from
the list:
1. Organic chemicals with an absolute vapor pressure less than
1.5 psia at 70 F. Emissions from these categories should be
grouped together. There is no technology currently available
to control emissions from these sources. Such organics were
considered to have too low and emission potential.
2. Those compounds with a boiling point below 25 C at 760 mm Hg.
Normally, any compounds with such a low boiling point would be
stored in pressure vessels or refrigerated tanks.
3. Any petrochemical with a boiling point below 60 C at 760 mm Hg.
These chemicals would probably be stored under working pressures
that would preclude any emissions. In most cases these compounds
have been also identified as health hazards and, thus, cannot
be emitted to the atmosphere.
4. All compounds known to be health hazards. The toxic nature of
these chemicals would necessitate the prevention of any atmos-
pheric emissions.
Some of these chemicals are so reactive that they must be stored in tanks
which protect them from oxygen and/or atmospheric moisture. Table II-6 lists
each compound eliminated using these criteria and which criterion caused the
11-28
-------
TABLE I I- 6
PETROCHEMICALS NOT INCLUDED IN THE
MASTER
ABSOLUTE VAPOR
PRESSURE
< 1.5 psia @ 70°F
BOILING POINT
BELOW
25°C @ 760 mm Hg
BOILING POINT
BELOW
60°C @ 760 mm Hg
TOXICITY
Acetic Acid
Acetic Anhydride
Allyl Alcohol
Sec Butyl Alcohol
Iso Butyl Alcohol
Tert Butyl Alcohol
Cumene
Cyclohexane
1, 4 Dioxane
Ethyl Benzene
Ethyl Acetate
Methylcylohexane
Nitromethane
Phenol
Styrene
Xylene
Acetaldehyde
Butadiene
Ethylene
Ethylene Oxide
Vinyl Chloride
Freon 11
Allyl Chloride
(2)
Diethyl Ether
(2)
Isoprene
Methylene Chloride
(2)
Prop ionaldehyde
Methyl Propyl Ether
n-Propylamine
Propylene Oxide
Vinylidene Chloride
Acetone
Chloroprene
Diethylamine
Methyl Acetate
(2)
Acetonitrile
Acrylonitrile
Carbon Tetrachloride
Chloroform
Diisopropyl Ether
Dipropyl Ether
Trichloroproylene
Trichloroethylene
(1)
(2)
The table shows those chemical compounds suggested by TACB and Radian
which were not included in the SCC master list because the vapor
pressure, boiling point or toxicity would preclude the storage of
these compounds in this fashion.
These chemicals are so reactive that they must be stored in tanks
which wliminate exposure to atmospheric moisture and/or oxygen.
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elimination. The following changes in nomenclature and deletions were also
necessary:
o Ethyl alcohol was eliminated because its value as a chemical
and strict government regulations pertaining to its pro-
duction and marketing would tend to preclude emissions.
o Because there was not enough data to characterize the storage
of isocyanates, they were deleted from the list.
o TACB proposed petrochemical product storage codes for
"dichloroethane" and "1, 2-ethylene dichloride". There
are two isomers of dichloroethane: 1, 1 dichloroethane and
1, 2 dichloroethane which is commonly known as ethylene
dichloride. Ethylene dichloride was included in the list
but 1, 1 dichloroethane was excluded because its boiling
point is less than 60 C at 760 mm Hg.
o Dichloropropane and dichloropropylene were eliminated because
each nomenclature designates a group of isomers which have
differing characteristics.
TACB also proposed floating roof standing storage codes for the 61
petrochemicals for which they proposed fixed roof working and breathing loss
codes. Radian developed emission factors for 15 of these compounds and also
proposed variable vapor space storage tank codes for the same 15 chemicals.
None of these codes should be adopted at this time because there is not suf-
ficient evidence to indicate that any of these chemicals are actually stored
in floating roof and variable vapor space tanks. Indeed, there are good
reasons for suspecting that they are not. Because most of these petrochemi-
cals are toxic or are rather costly products, most are probably stored under
sufficient working pressures to minimize emissions. EPA should survey indus-
try to determine which storage methods are used for these common petrochemicals,
what typical working pressures are normally applied, and what type of control
devices are in common usage.
Petrochemical Marketing/Transportation
TACB proposed codes for each of 51 petrochemicals to cover five
different marketing/transportation operations: (1) tank cars/trucks-splash
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loading, (2) tank cars/trucks-submerged loading, (3) tank cards/trucks-
unloading, (4) marine vessel loading, and (5) marine vessel unloading.
Radian did not propose any codes for petrochemical marketing/transportation.
The adoption of codes for 18 of these petrochemicals for tank cars/trucks-
loading and marine vessel-loading is recommended. The series for tank cars/
trucks-loading should not be divided into separate series for splash loading
and submerged loading because the distinction between loading methods may not
be significant. Most of these chemicals are sufficiently toxic or valuable
that one would reasonably expect industry to employ some form of air pollu-
tion control to minimize losses to the atmosphere. Thus, the distinction
between controlled and uncontrolled emissions may be more important. The pro-
posed codes for tank cars/trucks-unloading and marine vessels-unloading are
not recommended, either, because unloading losses are best handled as storage
tank working losses. For the series that are recommended, only those petro-
chemicals are listed for which the recommended mode of transportation could
be identified. In come cases, "TC" is used to identify those products which
are normally shipped only in tank cars. However, EPA should survey industry
to determine the transportation mode commonly used for each of the originally
listed petrochemicals as well as any others that may be of interest.
Review Methodology
It is incumbent upon the National Air Data Branch (NADB) to review all
proposed codes and to determine whether the proposed additions/changes are
necessary. NADB has established general guidelines which apply to all pro-
posed SCC revisions. SCCs may be added for new emission categories incor-
porated into AP-42 if there are no existing specific SCCs and for existing
source categories if none of the present specific SCCs are applicable.
Other SCCs may be added to account for the use of in-process fuels, if such
consideration has not been already made, or to make NEDS compatible with
other data systems. SCCs may be expanded if a more sophisticated determin-
ation of emission factors for a process is possible. There are four methods
for expanding codes and defining new emission factors:
1. As a function of process throughput;
2. As a function of variation in equipment;
3. As a function of operating mode; and,
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4. For a specific sub-process within a given process.
These guidelines were used to review the codes proposed by TACB and Radian.
Because NADB's guidelines are general, more specific technical criteria
were developed to enhance the guidelines. These six specific criteria were
utilized to develop the recommendations discussed earlier:
1. Because the current SCC master list is rather lengthy, new codes
should not be adopted unless (1) the process to be inventoried using
the new SCC emits a criteria pollutant, (2) the new SCC identifies
major sources of emissions (more than 100 tons/year), (3) the process
is associated with a major industry and is not obsolete, and (4) a
significant number of potential sources can be identified by the
candidate SCC.
2. A code proposed for product storage/marketing should identify the
product which can actually be stored in the designated manner. For
example, some codes were proposed for petrochemical products to
be stored in floating-roof tanks which could not possibly be so
stored because of their low boiling points. To evaluate the
appropriateness of proposed product storage/marketing codes, the
phy-jical/chemical properties for each product to be stored were
reviewed: boiling point range, true vapor pressure, reactivity,
toxicity, hazardous nature of the chemical, etc.
3. Because various systems of nomenclature are used for organic chemicals,
the designation of the proposed SCC should be consistent with the
nomenclature used in the existing table.
4. A proposed code should be in the same format as the existing codes.
5. A candidate code should not duplicate existing codes.
6. Because each SCC should be associated with an emission factor, the
process units (the mass or volume quantity of process throughput or
product) associated with a candidate code must correspond to the
process parameter required by an emission factor. If no emission
factor exists for a candidate code, the process data1 that is required
should be reasonably available and should be adequate for estimating
emissions when a factor is developed.
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To aid in systematizing the evaluation of each candidate code, a sum-
mary similar to that presented in Figure II-l was used. These summaries
also serve to document the analysis of candidate codes.
SCCs IDENTIFIED AS "OTHER/NOT CLASSIFIED"
Because specific SCCs have not been defined for all polluting processes,
the master list contains codes for processes labeled as "other/not classified"
and end in 99. The high percentage of code 99 usage limits the usefulness
of the SCC emissions report. The solution to this problem lies in the adoption
of codes proposed by users such as TACB and Radian and in continuously re-
viewing the processes found in code 99 to identify those processes for which
codes can be developed. Ten of these type 99 codes were reviewed as part of
this effort.
Code Selection
Three criteria were used to select the ten codes which were reviewed:
o Source emission ratio. The ratio of the annual average emissions
for any one criteria pollutant to the number of sources in each code
99 was developed from summaries of data in the NEDS file.
o NEDS Card 6 comments. Codes for which a large quantity of informa-
tion was available from the comments field on Card 6 were considered
most suitable for analysis.
o Category of source. Priority was given to those codes associated with
a major industry.
Table II-7 lists the ten codes selected for review and the number of NEDS
records reviewed.
Results and Recommendations
Based upon a review of the NEDS records of ten common "other/not classi-
fied" SCCs, general observations and recommendations can be made:
1. Many of the records were incorrectly coded. Although the specific
reason for miscoding sources varied in accordance with the specific
other/not classified code used, there appeared to be a general need
for EPA to identify the sources included in some of the codes. It
is recommended that EPA publish a guideline document which will more
specifically define the sources and operations included in SCCs.
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-sisiacor Agency
2a::a
PSCPCSZ2 SCC CATISQSY 3IG"S N'A-MZ DSSZ^.'AIICN
SCO Caisgory Z
SCC Category II
SCC Cacagory III
SCC Cacagorv IV
NO
s
HC
CO
PXCCSS3 2G3S1CS iCLUCi
PROCZSS DIAG?AX ^:CLOSc3 Yes Mo
MO
Figure II-l SCC review form.
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TABLE II-7
"OTHER/NOT CLASSIFIED" SCCs REVIEWED
SOURCE CATEGORY
Paint Manufacturing
Plastics
H.SO, Contact
Chemical Manufacturing
Waste Gas Flares
Ferroalloy Open Furnace
Petroleum Industrial Flares
Inprocess Fuel-Residual Oil
(1)
Inprocess Fuel-Process Gas
Surface Coating
Industrial Boiler
Bituminous Coal
sec
3-01-014-99
3-01-018-99
3-01-023-99
3-01-900-99
3-03-006-99
3-06-009-99
3-90-004-99
3-90-007-99
4-02-999-99
1-02-002-99
NEDS
RECORDS
REVIEWED
95
326
41
161
47
81
479
197
2,623
112
^ ' Even though the NEDS does not handle emissions separately for in-
process fuel, there are a number of other uses for the fuel informa-
tion. Therefore a definite need exists to improve the quality of
that kind of data. Determining area source emissions from fuel usage
depends on developing a complete fuel balance for a county. In these
cases, accurate in-process fuel data are. essential.
2. New codes should be developed in response to a definite need,
i.e., there are a significant number of sources emitting a sub-
stantial amount of one of the criteria pollutants which the present
codes inadequately handle. It is important, therefore to identify
the number and the emission potential of sources which have been
coded with 99 codes. The wide variety of comments used on NEDS
Card 6 for code 99 made it difficult to identify the number of
specific unit operations or processes that have been included in
code 99 by coders. If EPA were to standardize the comments that a
coder can use for code 99, the definition of specific SCCs in the
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future would be facilitated. EPA's edit program could be more
effectively used to summarize NEDS data for analysis prior to the
development of new SCCs.
3. Because the records spanned a five-year period, it was difficult
to determine the magnitude of annual emissions from sources that
have been coded using these ten particular 99 codes. A continuing
effort to update the NEDS data file will be essential if SCCs are
going to be more accurately defined. These problems prevented the
development of more specific codes as a result of this review.
4. The adoption of the codes recommended as a result of the review of
TACB's and Radian's proposed codes will reduce the number of records
coded with 99 SCCs. Such revision of the master list, however, will
not eliminate all of the problems associated with code 99.
5. Because of the difficulties encountered, no new codes are proposed
as a result of this analysis at this time.
For each of the ten 99 codes reviewed, certain specific steps are recommended
that EPA can take to further the effort of reducing the number and importance
of 99 codes. Most of the following specific recommendations amplify these
general recommendations.
Paint Manufacturing (3-01-014-99)
Nearly half of the records reviewed for this 99 code were miscoded.
Most of the mistakes in coding appeared to result from the inclusion of a
code for pigment kilns (3-01-014-02) under pain manufacturing. It is recom-
mended that this code be suppressed. The existing series of codes for
inorganic pigments should be adequate to handle the records previously in-
cluded under this SCC. About 6% of the records could not be analyzed because
of missing comments or Standard Industrial Classifications (SICs). Most of
the remaining records could be grouped into one of the following operations:
1. Material handling/grinders/loading-unloading operations;
2. Mixers/thinners/blenders;
3. Fugitive losses/water-base paint;
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4. Fugitive losses/non-water-base paints;
5. Lacquer manufacturing; and,
6. Industrial coating manufacturing.
EPA should instruct coders to use standard descriptions for these six oper-
ations and any others that might be appropriate in making comments on NEDS
Card 6. The first two operations listed were the most frequently occurring
operations. The last two operations, i.e., lacquer and industrial coating
manufacturing, belong properly to the "other/not classified" chemical manu-
facturing code (3-01-999-99). If EPA prepares a guideline document as re-
commended, brief explanations of those operations for which standardized
comments are provided should be included.
Plastics (3-01-018-99)
A large number of the records (62%) for this code could not be
adequately reviewed because there were no comments. Of the remainder, 11%
will be included under new codes which were recommended as a result of the
analysis of codes proposed by TACB and Radian. No new codes could be
developed from an analysis of the remaining records because the comments
were too vague. Coders should be asked to specify in their comments a
fabrication method, the resin used in plastic fabrication, or the monomer or
resin manufactured. To assist the coder, EPA could provide a reference table
in the proposed guideline from which abbreviations could be selected for com-
binations of solvents, resins, and monomers, e.g., methyl methacrylate (monomer)/
acrylic resin/solvent "X".
Sulfuric Acid Manufacturing - Contact Process (3-01-023-99)
There are two main problems that coders are encountering in coding
sulfuric acid manufacturing sources:
1. All other sulfuric acid manufacturing codes are based on
the conversion efficiency. Because the coders have no idea
which unit operations are included in each SCC nor the degree
of control and type of control equipment used, they are including
under the 99 code such emission points as fugitive losses,
acid mist, adsorbers, etc. which properly should be assigned
specific codes.
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2. Coders are using this 99 code for acid reclaiming sources
and sources related to the production of raw materials such
as elemental sulfur, spent acid, hydrogen sulfide, sulfide
ores, and smelter gas which are used to produce sulfuric acid.
The recommended guideline document should incorporate a condensed version of
the discussion of acid manufacturing found in AP-42, as well as a dicussion
of acid reclaiming and raw material production. Over 60% of the records re-
viewed could not be analyzed properly because of missing or incorrect SICs
and/or comments.
Chemical Manufacturing Waste Gas Flares (3-01-900-99)
Two-thirds of the records reviewed were incorrectly coded. Flares
used in oil and natural gas production and extraction and in the metallurgi-
cal industry were incorrectly coded using this SCC. Only 10% of the records
indicated the substance being flared. It is recommended that standardized
comments be established for the following types of waste gas streams:
o Streams rich in sulfur, nitrogen, or carbon monoxide;
o Streams which contain acids or toxic compounds;
° Streams which contain solvents (the solvent should be specified);
and,
o Streams which contain chemicals in certain chemical classes such
as ketones, aldehydes, etc.
The proposed guidelines, by identifying the proper SCCs for those types of
flares, could eliminate the problem evidenced by the large number of incorrect]y
coded sources.
Petroleum Industry Flares (3-06-009-99)
It is important that a standardized comment be developed to identify
waste gas streams rich in hydrogen sulfide acid gas, and mercaptan. Reference
should be made to alternative names for these streams such as sour gas. Over
one-quarter of the records reviewed referred to such waste streams. Other
flares could be grouped in accordance with the type of fuel burned, i.e. clean
fuels (hydrocarbons), chemical wastes, and process wastes. Unless EPA intends
to create a series of codes for petrochemical manufacturing as part of the
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petroleum manufacturing series, coders should be encouraged to use the SCC
for chemical manufacturing waste gas flares for waste streams from petro-
chemical operations.
Surface Coating (4-02-999-99)
The main problem with the records reviewed for this 99 code was that
the process or unit operation was identified in the comments rather than the
^•a
type of surface coating such as primer, enamel, etc. This type of comment
does not conform to the format established for the surface coating series.
Approximately 20% of the records should be receded because: (1) there are
existing specific codes, (2) new specific codes have been developed, or
(3) new codes are being developed. It is recommended that the proposed
guidelines require the coder to specify the solvent used. Unit operations
can be identified in the comments fields for existing specific codes. Some
discussion of commonly used terms such as sealers, dyes, stains, glazes, and
fillers should be presented so that this terminology can be related to the
technical classifications used to define specific SCCs.
Bituminous Coal Industrial Boiler (1-02-002-99)
Nearly one-third of the records reviewed were improperly coded be-
cause the coder did not recognize that the existing specific codes can apply
also to chain grates, traveling grates, and underfired stokers. One-third
could not be analyzed because the comments were omitted. The comments for the
remainder were not useful because they were too vague, e.g., "coal boilers".
The proposed guidelines should emphasize the equality of various terms for
the same basic piece of equipment. States should be encouraged to request
more specific information about process equipment on permit application
forms so that specific comments can be made on NEDS Card 6.
Ferroalloy Open Furnace (3-03-006-99)
Apparently, coders are having difficulty in correctly using this
99 code because the other codes in the series are designated for differing
alloys, e.g., 50% FeSi, 75% FeSi, etc., rather than unit operations. Thus,
a coder may not know that each of the codes in the series pertains solely to
emissions from submerged-arc open type electric smelting furnaces. These are
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reduction-type processes, and emissions from other unit operations such as
crushing, charging, or raw material handling are not included under any of
these SCCs. It is recommended that the existing SCC for screening be ex-
panded to include crushing and other handling operations because nearly 35%
of the records reviewed referred to such operations. Standardized comments
should be developed for other ferroalloys such as chrome-silica, stainless
steel, silicomanganese, and for certain miscellaneous operations such as
slag disposal and tapping. Approximately 35% of the records could not be
reviewed because there were no comments.
Inprocess Fuel - Process Gas (3-90-007-99)
Approximately 85% of the records reviewed were incorrectly coded
because sources burning coke oven gas, blast furnace gas, natural gas, or
solid waste had been coded using this code although other SCCs are more
applicable. The remainder of the records could not be analyzed because the
comments were missing. The guidelines which have been recommended could be
useful in correcting some of these problems by clarifying the difference
between a process gas and natural or liquified petroleum gas used in a pro-
cess. Standardized comments could be developed to better identify the type
of process gas burned. Because waste gas streams are often used for inpro-
cess fuel, probably the comments should be similar to those developed for
chemical manufacturing and petroleum industry flares. The use of this code
to identify sources in the petroleum industry which may burn process gas and
oil must be corrected. SCCs dealing with inprocess fuel have no associated
emission factors. Thus, emissions are estimated using the factor associated
with the inprocess fuel code's "parent" SCC. Before this SCC or any other
SCC dealing with inprocess fuel is expanded, careful consideration must be
given to the "parent" SCC, i.e., a manufacturing SCC (with which an emission
factor is associated) that can be used to estimate emissions from inprocess
fuel combustion as well as from the process itself. There must be a parent
SCC for each inprocess fuel SCC.
Inprocess Fuel-Residual Oil (3-90-004-99)
Approximately 65% of the records could not be adequately reviewed
because of blank or useless comments or missing SICs. A tenth of the re-
cords were apparently incorrectly coded because this code was used to identify
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grain dryers, incinerators, glass furnaces, etc. There is a definite need
for guidelines to clarify the use of this code and others in this series.
The inprocess fuel codes for metal melting, food-drying/cooking/etc., feed/
grain drying, lime kilns, kaolin kilns, perlite furnaces, glass furnaces,
frit smelters, and asphalt drying are in particular need of definition. It
is not clear whether metal melting includes open hearths, electric arc fur-
naces, etc. or just melting for molding and casting operations. No distinc-
tion is made for primary and secondary metal operations. An explanation
should be provided for such operations as slab furnace, hot strip mill fur-
nace, heat treating furnace, and annealing oven which are normally included
in the basic casting and molding operations. The codes for food-drying/
cooking and feed/grain drying should be defined in the guidelines so that a
coder will know if such operations as wet corn milling/pulp drying and
bagasse drying are included. Based upon the records reviewed, there appears
to be some confusion among coders as to the relationships between limestone
drying and lime kilns, between clay and kaolin, perlite and glass, frit and
ceramics, etc. The proposed guidelines should also explain what processes
are covered by the code for asphalt drying. Standardized comments should
be identified in the guideline recommended document which can lead eventu-
ally to defining new SCCs. Coders should be required to identify process
units. There are a number of processes which could be identified in these
comments: ore roasting/drying; anode baking; ovens used for ornamental
metal work; processes in the textile industry; dryers, kettles, heaters,
stills, etc. used in the plastics and petrochemical industries; and drying
operations for mineral products such as salt/asbestos that are not currently
specified in this code series. Comments such as "residual oil" or "^6 oil"
should not be used.
Methodology
The following steps were taken to review the records from each 99 code
selected:
1. EPA extracted all the records for the SCC from the NEDS data bank.
Each of these records were reviewed manually.
2. The comments for each SCC were summarized. Similar comments were
grouped in the summary so that the number of sources which had the
same or similar characteristics could be identified.
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3. The SCCs were cross-checked with the SICs to determine if any
process was incorrectly coded, considering the nature of business
of a specific four-digit SIC. This review, in some cases, identi-
fied probable miscoding in that some of the sources coded with a
specific 99 code belonged to SICs in which such sources would not
be expected.
4. An effort was made to determine the total emissions which could be
grouped according to specific comments and the emissions from repre-
sentative sources within this group. Any new SCC developed should
categorize a significant number of major sources, i.e., sources
with potential emissions greater than 25 tons/year, with a substantial
emission potential. This effort was unsuccessful because there was
no common baseline year for much of the data.
5. After reviewing a number of records, a number of problems with the
methodology were discovered. To solve these problems, a number
of recommendations were identified which held promise of enabling
EPA in the future to better identify new SCCs from records coded
with code 99. One major recommendation was to provide standard-
ized comments and abbreviations which could be selectively retrieved
by computer. Once this recommendation was identified, the comments
were again reviewed in order that standardized comments could be
suggested.
This methodology which could be utilized for reviewing records to identify new
more specific SCCs and thus minimize the number of sources with code 99, was
developed from the rather general methodology for developing new SCCs found
in the NEDS User's Manual.
GENERAL CONCLUSIONS AND RECOMMENDATIONS
A number of general conclusions can be drawn from this effort to evalu-
ate codes proposed by TACB and Radian and to develop new codes from 10 speci-
fic codes 99:
1. There is considerable room in the SCC master list for the addition
of new codes. The list of new codes recommended as a result of this
evaluation is by no means exhaustive but it is based on the best
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information available at this tiae. Indeed, many of the codes not
recommended may prove in the future to have merit.
2. If the master list is to be updated, EPA needs to develop a better
procedure than is currently available. State and local agencies as
well as Government contractors must be involved in the process because
they are the primary developers of data that are entered into NEDS.
EPA, however, has a major responsibility in the process in that EPA
must evaluate all proposed codes and make the final decision as to
adoption or rejection of proposed codes. This process and each
participant's role in it must be adequately defined and systematized.
3. The number of codes 99 and the emission potential of sources with
such codes limit the effectiveness of NEDS. This problem cannot be
fully resolved using EPA's anticipatory approach, i.e., anticipating
major source categories and developing emission factors and SCCs for
these source categories. The population of major air pollution
sources is too large and complex to rely solely on such an approach.
4. A significant problem identified during the review of codes 99 was
the large number of sources which were coded with apparently incor-
rect SCCs. EPA should seriously consider 'further steps that can be
taken to eliminate this problem.
5. The present state of the NEDS file is such that it is difficult to
identify new SCCs by reviewing the records of sources with codes 99.
Some recommendations have been made in the review of codes 99 and
expanded upon in the discussion of the 10 specific codes which could
make this file more useful.
It must be stressed that this effort may prove to be more useful because of
the general recommendations made to enhance EPA's method of identifying and
evaluating new SCCs rather than for the specific new SCCs recommended for
adoption.
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A major recommendation, however, is that the new SCCs recommended in Table
II-3 be adopted expeditiously. Their adoption could prove to have immediate
benefit both for EPA and NEDS users. In the long term, EPA should continually
review SCCs for such industries as chemical manufacturing because of the
technological changes that characterize these industries. Care must be taken
to avoid encumbering the SCC master list with revisions that confuse the NEDS
users rather than enhance the system. EPA can define more specific guidelines
for the expansion of the list. Many of the specific recommendations made
earlier and the methodology developed for the evaluation of codes proposed
by TACB and Radian can be used to develop these guidelines. The requirement
that any agency proposing new codes assess the applicability of the new code,
i.e., the number of sources and the emission potential of those sources
covered by the proposed code within a given state, would aid in the evaluation
of such proposed codes. Based on the fact that the master list is becoming
so long and complex, consideration should be given to instituting training
programs for NEDS coders. As a minimum, the guidelines suggested earlier to
define codes and their usage should be developed. These guidelines could be
incorporated into the existing discussion of processes given in AP-42. In
any case, these guidelines must be kept brief, clear and simple to avoid
confusion. They should answer questions that can cause miscoding.
While these recommendations will not, in and of themselves, solve all the
problems involved in using the SCC master list, they should considerably
enhance the usefulness of the NEDS.
-------
CHAPTER III
ENHANCEMENTS OF AEROS INSPECTION/
ASSESSMENT PROCEDURES
Data submitted to the National Air Data Branch (NADB) should be reviewed
by a data auditing system to ensure the integrity of data entered into the
National Emissions Data System (NEDS) and the Storage and Retrieval of
Aerometric Data (SAROAD) System. If the submitted data cannot pass a
computerized editing routine included in such an auditing system, they should
be rejected and returned to the originator for correction and re-submittal.
Data accepted into NEDS or the SAROAD System should be also subjected to
validation checks to identify data anomalies. These anomalies should be
noted, and the originator should be asked to verify the data. As part of
this effort to enhance the Aerometric and Emissions Reporting System (AEROS),
the editing and validation criteria that were proposed for inclusion in a
computerized auditing system were reviewed and tested by actually validating
NEDS data from two states: North and South Carolina. As a result of this
review, enhancements to the proposed auditing system were identified and
recommended. In addition, validation criteria were developed to audit SAROAD
data to ensure that the data lie within an acceptable range of maximum and
minimum values.
NEDS AUDITING PROCEDURES
Two auditing routines for NEDS were reviewed:
o NE061 - A computerized editing routine used by NADB and recently
modified to reduce the number of error messages. As an editing
routine, its primary purpose is to identify format errors of the
data submitted into NEDS. The program was not designed to evaluate
the quality or validity of data. However, a few validation checks
are included. The violation of these validation criteria triggers
the issuance of warning messages but does not prevent the incorpor-
ation of the data from getting into the NEDS master file.
III-l
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o A computerized validation routine under development by NADB. This
proposed validation module is a comprehensive data auditing program.
The version reviewed in this effort was preliminary, and, thus, some
of the recommended enhancements may not be applicable.
These two data auditing systems were reviewed to determine their usefulness
and to determine if enhancements to both or either system were desirable.
It is recommended that these two systems be combined. This combination
of the two systems could produce some economies of scale in that both programs
in various instances edit similar data fields. If they are combined, two
audit messages must be used: error and warning. Format errors in certain
key fields should cause the rejection of submitted data. The review of other
fields should be used to identify data anomalies which would not cause a re-
jection of the data but, rather, the issuance of a "warning" which would
require the originator to verify the accuracy of the data in these fields.
Such an auditing system could be used to fulfill two purposes:
1. To edit input transactions so that erroneous data would not be
entered into NEDS.
2. To validate data already in NEDS so that existing data could be
improved.
No determination of the economic feasibility of developing the software requited
or of implementing and maintaining the system once developed was made.
Recommended Enhancements
Enhancements to the auditing module are recommended. These enhancements, as
well as brief discussions of the validation criteria included in the module, are
listed in Table III-l. No enhancements are recommended for NE061 because the
two systems should be integrated. No enhancements are recommended for the
format edits retained from NE061 because these criteria are probably adequate.
The validation criteria included in that program would in many cases be super-
seded by those in the module. It was felt that enhancements to the validation
criteria in the module would be more valuable. In addition to the enhancements
recommended in Table III-l, the following observations were made about proposed
validation checks for individual point source data fields:
III-2
-------
TABLE TII-1
NEDS POINT SOURCE INVENTORY DATA QUALITY VALIDATION CHECKS
FIELD
NAME
EPA VALIDATION CHECK
FOR POINT RECORDS
ES RECOMMENDATIONS
5
6
13
14
City
UTM Zone
(Universal Transverse
Mercator)
SIC
IPP Process
15 & 16
UTM Coordinates
Must be a valid entry in
the AEROS City County File
For each state a valid begin-
ning zone and a valid ending
zone. Example: State Oil 15
through 16 are valid. See
Table 1.
Must he a valid entry in the
SIC Names file.
A table will be used to match
SIC and ll'P codes with SCC
code. One entry in table for
each SCC. Presently about
1,000 SCC codes. Table 2
tives general pattern tor
table of SCC's vs SIC-1PP
codes. If found invalid the
error could be In the SCC code,
For each state:
Horizontal: max & min values
Vertical: max fc. min values
The SCC/SIC-IPP table should also
be used to identify missing key
SCC codes for facilities in the
inventory.
-------
TABLE III-l (CONT'D.)
NEDS POINT SOURCE INVENTORY DATA QUALITY VALIDATION CHECKS
FIELD
NAME
EPA VALIDATION CHECK
FOR POINT RECORDS
ES RECOMMENDATIONS
17
Stack Height
M
18
19
20
21
Stack Diameter
Stack Temp
Flow Rate
Plume Height
22 & 23 Points with Common
Stack
Must be < 500 ft.
Must be < .2 of stack height
77°F to 2,000°F
Must be within range of formulas
listed in Table 3 based on SCC
Must be < 200 ft.
The number in 58-59 (23) must
be > the number in 59-60 (22)
unless both the fields are 00
or blank. If one field is 00
or blank then the other field
must be 00 or blank. When any
transaction is made to a record
which has number non-zero num-
bers in these 2 fields the follow-
ing message must be printed:
"CHECK POINT ID TO for cor-
rect points with COMMON STACK"
All stack parameters should be
audited based on typical discri-
minators for major SCC groups.
The table which relates stack gas
flow rates to SCC categories should
be expanded to include height,
diameter, and temperature.
Must be 10 £ P _< 200 ft., where
P = plume height.
Validation discriminator for ex-
haust flow rate should be overriden
and the audit based on the result-
ing velocity or flow rate for all
points with common stack vs. a
specified range or exit velocities
or flow rates.
(1)
The term 'discriminator1 refers to specific validation criteria (usually a numerical range) for
individual data elements. If the data element falls outside the range of the discriminator, it
must be checked.
-------
•TABLE TII-1 (CONT'D.)
NEDS POINT SOURCE INVENTORY DATA QUALITY VALIDATION CHECKS
FIELD
NAME
EPA VALIDATION CHECK
FOR POINT RECORDS
ES RECOMMENDATIONS
25
26-35
Boiler Design Capacity
Control Equipment Code
M
01
36-40
CoiiLrol Efficiencies
The maximum design rate x heat
content must not be > the
boiler design capacity + 20%.
Must be valid code from Section
II of AEROS Vol. V (42 codes
at present). Also must be valid
for the specific pollutant. Table
4 contains this information.
Table 4 will need to be updated
per Lodi cal l.y.
Must be in the range of values for
each device-pollutant combination
in Table 4. In cases where both
primary and secondary control de-
vices are coded, this check should
apply only to the code for the se-
condary device. If there is no
secondary device (secondary code=
000) the check applies to the pri-
mary device. If a number is coded
for either primary or secondary
device, both fields must have de-
vice codes, L.e., primary & se-
condary device fields must both
have codes or both be blank. If
the control device code fields are
biank, the control efficiency field
must also be blank. If the control
device code-000, then efficiency
-------
TABLE III 1 (CONT'D.)
NEDS POINT SOURCE INVENTORY DATA QUALITY VALIDATION CHECKS
FIELD
NAME
EPA VALIDATION CHECK
FOR POINT RECORDS
ES RECOMMENDATIONS
H
36-40 Control Efficiencies
(Cont'd.)
42-45 % Thruput
46 Hours/Day
47 Days/Week
48 Weeks/Year
49-53 Emission Estimates
must be zero or blank. NA
indicates control equipment
code is not applicable for
that pollutant, control de-
vice combination.
All 4 seasons must sum to
100 unless there is only one
nonblank season with an entry
of 99.
Must be _< 24 if not print
message and make it blank.
Must be j< 7 if not print
message and make it blank.
Must be <_ 52 if nor print
message and make it blank.
Must be £ 25,000 for each
pollutant. Check a value for
each pollutant because the
25,000 might be changed to
a different number for each
pollutant.
The discriminator proposed is
too broad and will not identify
the majority of errors found in
this field. The following dis-
criminator is proposed: for
pollutants with emissions > 100
tons/yr. for which the method of
estimation ^ 3 and ^ 1, emissions
should be within + 20% of those
calculated using the emission
factor table.
(1)
The term 'discrimination1 refers to specific validation criteria (usually a numerical range) for
individual data elements. If the data element falls outside the range of the discriminator, it
must be checked.
-------
TABLE III-l (CONT'D.)
NEDS POINT SOURCE INVENTORY DATA QUALITY VALIDATION CHECKS
FIELD
NAME
EPA VALIDATION CHECK
FOR POINT RECORDS
ES RECOMMENDATIONS
49-53
Emission Estimates
(Cont'd.)
M
t-t
I
59
% Space Heat
61-65
Allowable Emissions
Must: be numeric (can have lead-
ing blanks, not all blanks) con-
tains an SCC which begins with
a 1 or 2 for all other SCC's
no check is necessary.
Must be all 9's or not > than
25,000 for each pollutant.
Check a value for each pollu-
tant as for Emission Estimates.
The following check can be also
made for each Category II SCC
series; specific pollutants can-
not be blank nor zero. For
example, emissions of particulate
and SO from boilers (1-01-XXX-XX)
and in-process fuel (3-90-XXX-XX)
must not be coded or left blank
or = 0.
Also, once a method = 1 is identi-
fied, an emission factor should be
computed from the data reported
(process & emission) and saved on
a separate file so that new/re-
vised emission factors can be com-
puted and reissued through AP-42.
For each of the .criteria pollutants
a discriminator should be estab-
lished which best represents cur-
rent regulation trends. For example,
a value of 0.03 grains/scf for part-
iculates, which corresponds to a
clean plume, could be adopted.
(1)
The term "discriminator1 refers to specific validation criteria (usually a numerical range) for
individual data elements. If the data element falls outside the range of the discriminator, it
must be checked.
-------
TABLE III-l (CONT'D.)
NEDS POINT SOURCE INVENTORY DATA QUALITY VALIDATION CHECKS
FIELD
oo
NAME
EPA VALIDATION CHECK
FOR POINT RECORDS
66 Compliance Status
67-68 Compliance Year &
Month
69-71 Date of Update
72 Emergency Control
78-79 Operating Rate vs.
Design Rate
Must be = 1,2,3,4. Cannot be
blank.
Must be <_ today _ 5 years.
Must be _<_ today.
Must be 0,1,2, blank.
Operating rate must be <_ 110%
design rate. These fields have
different units: SCC/YR for
operating rate, SCC/HR for de-
sign rate, convert design rate
to SCC/HR by multiplying it
by //
ES RECOMMENDATIONS
SCC processes codes with a se-
condary code for in-process fuel
should be flagged and the exist-
ence of the fuel code verified.
For example, an asphaltic con-
crete rotary drier (3-05-002-01)
should also have an in-process
fuel code, i.e., 2-98-004-01 (re-
sidual oil), 3-90-005-01 (distil-
late oil) or 3-90-006-01 (natural
gas).
After the semi-annual updates to
the file, fuel summaries should be
made available to the state & re-
gional offices for manual veri-
fication against published data
in the Mineral Industry Survey
(MIS).
-------
.TABLE III-l (CONT'D.)
NEDS POINT SOURCE INVENTORY DATA QUALITY VALIDATION CHECKS
FIELD
NAME
EPA VALIDATION CHECK
FOR POINT RECORDS
ES RECOMMENDATIONS
Operating Rate vs.
Design Rate (Cont'd.)
Total fuel reported by a facility
should be verified against a
typical usage range per type of
fuel. Ten major types of fuel
have been identified in the NEDS
file.
i
vo
80,81,83
84
Ash, Sulfur, Heat
Content
Source Code
SCC
1-
2-
3-
Consistent with ranges in
Table 5.
For each SCC the following
source codes are valid.
Source Code
B
C
P
(except 390 ----- )
390 ----
4 -------
6 -------
C
P
s
No code necessary
If any of the above fields are blank, then those fields are valid,
unless it specifically states that the field cannot be blan,.
The processing of records with
blank fields should be avoided.
Records coded with blank fields
should be returned to their
originator for completion.
-------
0 SIC (Field #13). If the review of the Standard Industrial Classifi-
cation (SIC) field were linked to the review of the Source Classifi-
cation Code (SCC) and the Implementation Planning Program (IPP)
process code, missing key SCCs might be identified. Also, the com-
pleteness of the inventory could be judged more appropriately.
o Stack Parameters (Fields #17 through 21). The proposed validation
checks are much too limited. An order of magnitude error in coding
stack parameters such as a stack temperature of 770 F rather than
77 F for emissions from a rock crusher might be undetected if these
criteria are used. Yet, such an error, if used in air quality dispersio;
modeling, could cause significant errors in predicted pollutant concen-
trations. The validation checks for these parameters must be process
specific.
o Allowable Emissions (Fields #61 through 65). The proposed validation
criteria are too broad and should be particularized for individual
processes.
o Operating Rate vs. Design Rate (Fields #78 and 79). The recommended
enhancements should prove valuable to anyone using the inventory in
air quality maintenance analysis.
Enhancements were not recommended for all of the validation criteria but
only for those which were considered to be most important and which promised
to improve significantly the quality of NEDS inventory data.
Validation Criteria Tests
To determine the feasibility of the proposed validation criteria and
the recommended enhancements, the NEDS data files for North and South
Carolina were tested against selected validation criteria. There are three
methods that can be used to audit data: (1) manual, (2) a semi-automated
approach, and (3) an automated computer system. The cost and time required
to audit data by a completely manual method or to develop software for an
automated approach precluded the adoption of either of these methods for
this study. Thus, a semi-automated approach was selected in which the EPA's
Emission Inventory System/Permits and Registration (EIS/P&R) was used to
retrieve specific data sets from the data file which were then audited
111-10
-------
manually. Because of the tediousness of auditing the files manually, the
number of SCCs and validation criteria selected were limited. Because of
these limitations, the files from two states were audited rather than from
one so that anomalous results that might be due to characteristics of a
single data file would be reduced. The files for North and South Carolina
were selected because there was ready access to them and a familiarity
with them.
The classes of SCCs tested included:
o Emission sources which were fairly common in the two study files.
o Those sources which were most likely to be major emitters.
° Sources for which the data in the file were fairly complete.
Using these general criteria, the files were visually inspected, and
the following codes were selected for auditing:
o 1-01-002-01 and 1-02-004-01. These two combustion source categories
were selected inasmuch as the emissions from large pulverized coal burn-
ing utility boilers (1-01-002-01) and from large residual oil burning
industrial boilers (1-02-004-01) are quite significant. The two
source categories were likely to have markedly differing source
characteristics such as operating efficiencies, schedules, and stack
parameters, however. Also, a large amount of data that could be
used to establish SCC-specific validation criteria were likely to be
available.
o 3-05-020-01 through 3-05-020-06. The first five codes in this series
were grouped because each refers to a crushing operation in a stone
quarry. It was felt that most crushing operations should have similar
characteristics. The Category IV code 06 (screening/conveying/handling)
was grouped with the codes for crushing operations because the source
characteristics would be similar.
o 3-07-001-04 through 3-07-001-06. These codes cover sources in the
sulfate pulping industry: recovery boiler/direct contact evaporator,
smelt dissolving tank, and lime kiln. The validation criteria for these
sources are common to all, and, thus, they were grouped for testing.
III-ll
-------
o 3-05-007-01 through 3-05-007-05. Kilns and dryers in the Portland
cement manufacturing industry are covered by these codes. They were
grouped for auditing because the source characteristics which were
validated are similar.
Although the test of the validation criteria was limited to these SCCs, the
results should be applicable to most sources in a point source inventory.
For each source selected using the procedures discussed above, the
following audit checks were performed:
1. Missing Processes/Sources Within a Plant (missing SCCs). There
are two methods that can be used to determine if SCCs might
be missing from the data for a particular facility. For each
SIC, a specific group of processes or unit operations should
be present. If a cross-reference between SICs and SCCs can be
established, missing or incorrectly coded SCCs could be determined
by retrieving data for an SIC. If the IPP codes are linked to the
SIC, a further sophistication would be added to this method. In
the second method, a retrieval is made of all SCCs in a given faci-
lity. For each "key" SCC a particular group of "sister" SCCs should
be present. For example, in a stone quarry, a combination of
crushing, materials handling, and storage operations would be ex-
pected. If for a particular quarry an SCC for primary crushing is
found without the corresponding code for storage, it could be sus-
pected that the storage operation had been inadvertently overlooked.
The second method for finding SCCs was tested because of a high
probability that the SIC might be missing or incorrectly coded.
2. Validation of Stack Parameters. Table III-2 lists the validation
criteria used to check the stack parameters for possible error.
Most of the validation criteria included in Table III-2 were culled
from Exhaust Gases from Combustion and Industrial Processes (EPA
Publication No. APTD-0805) which contains ranges of typical values
of stack parameters for selected industrial processes. These cri-
teria were modified, to reflect current operating practice. The
audit check for flow rate/exit velocity is a particularly important
check among stack parameter audits. Although an audit of exit
111-12
-------
TABLE III-2
sec
1-01-002-01
1-02-004-01
3-07-001-06
3-05-020-01
through
3-05-020-06
3-05-007-01
through
3-05-007-05
VALIDATION
CRITERIA FOR
STACK TEMPERATURE
DIAMETER (FT) (°F)
15-30
5-30
1-15
1-10
5-20
250-370
250-700
150-350
60- 80
250-750
STACK PARAMETERS
STACK
HEIGHT (FT)
200-800
100-500
30-250
20- 50
100-300
EXIT VELOCITY
(FEET /SECOND)
30-60
30-60
20-40
5-30
20-60
PLUMED
HEUUIT (FT)
—
—
—
10-200
(1)
The plume rise must be given If no stack parameters are coded.
-------
velocity is recommended and these criteria were tested accordingly.
there is certainly considerable merit in the validation criteria f c r
flow rate proposed for the validation module. The proposed flow
rate validation is particularly appropriate for those SCCs for which
little stack characterization data are available. The recommended
approach, however, is probably superior for such major sources as
combustion. EPA might consider combining the two approaches.
3. Universal Transverse Mercator (UTM) Validation. The method used to
audit UTMs was similar to that proposed in the module but was applied
to determine if the source was correctly located in a specific county
rather than just the state in general. A state was divided into a
number of boxes -which contained one or more counties. The coordinates
coded in the file for each source were compared with the coordinates
of the corners of the box which contained the county in which the
source was located.
4. Emissions Audit. Two separate steps were used to audit emissions:
(1) the record was checked to determine if the entry for particulate
emissions for those sources with a high emission potential based on
a review of AP-42 was blank or zero, and (2) if the entry was not
blank or zero, a ratio, R, was calculated using the formula,
where, E- = Reported emissions
E_ = Calculated emissions using annual throughput and the
emission factors associated with the appropriate
SCC.
R was then checked to see if it fell within a range from 1.4 to 0.6.
Although the recommendation has been made that only sources with
emissions >_ 100 tons/year be audited, all sources selected for
auditing in this test were checked.
5. Validation of Annual Operating Rate vs. Design Rate. The criteria
proposed for the validation module were tested. A ratio, R, was
calculated using the formula,
111-14
-------
where, EL = Theoretical maximum operating rate (maximum design
rate X operating schedule)
EL = Annual operating rate reported
Results or the Validation Criteria Tests
Table III-3 presents the results of the test of the validation criteria,
i.e., operating and design rates, emissions, plume height, stack height, stack
diameter, temperature, and exit velocity in terms of the percentage of records
reviewed which failed an audit. As can be seen from this table, the over-
whelming majority of the records reviewed failed at least one criteria test.
According to these tests results, most of the anomalies, if the large number
of blank data entries is disregarded, were detected by tests of emissions,
stack gas velocity, and operating and design rates. Of a total of 136 plants
tested, 42 were missing UTM coordinates and the coordinates of another 22
were apparently anomalous. Of all the facilities tested, none were found
to have all the SCCs which were expected.
There are two readily apparent explanations for the large number of
points which failed to pass these audits:
1. There are numerous, severe problems with the data files audited.
This conclusion must be conceded because of the numerous missing
items in the data. Both files were rather old but were used pri-
marily because of their ready availability. Both files have been
substantially updated recently.
2. The auditing criteria used in the test may have been too sensitive,
i.e., the range of discriminators used as audit criteria may be too
narrow and, thus, resulted in the rejection of too many "good" re-
cords. Although the best information available was used, it is
probable that many of the records rejected were not in error. The
next step in an auditing procedure would be to request that the
originator of any apparently anomalous data verify the correctness
of that data.
111-15
-------
TABLE III-3
PERCENT OF RECORDS
INDIVIDUAL
VALIDATION
CRITERIA
Number of Re-
cords Tested
Operating
and Design
Rate
M
l-i
M
1
o> Emissions
plume(2)
Height
Stack
Hoi al-it-
Stack
Diameter
REASON FOR
FAILURE
Blank
Incorrect
Blank
Incorrect
Blank
Incorrect
Blank
Incorrect
Blank
Incorrect
1-01-002-01
NC
4
0
25
0
0
—
—
0
0
0
75
SC
16
0
19
0
19
—
—
0
19
0
38
WHICH FAILED
VALIDATION CRITERIA
1-02-004-01
NC
49
12
18
18
14
—
—
2
45
22
29
SC
38
0
32
16
18
—
—
0
29
0
5
3-05-020-01/06
NC
162
10
7
8
27
38
2
2
0
2
0
SC
71
80
0
4
52
6
0
1
0
1
0
3-07-001-04/06 3-05-007-01/02
NC
27
0
7
4
44
—
—
0
0
0
0
SC NC(1' SC
26 0 7
0 — 100
4—0
o—o
88 — 57
—
—
0 — 86
0 — 0
0—0
0 — 29
OVERALL
FAILURE
RATE
22
10
8
34
16
1
3
9
4
7
Temperature
Blank
0
13
0
0
Incorrect
25
44
16
0
19
14
-------
TABLE III-3 (CONT'D.)
PERCENT OF RECORDS WHICH FAILED
INDIVIDUAL VALIDATION CRITERIA
1-01-002-01 1-02-004-01 3-05-020-01/06
VALIDATION REASON FOR
CRITERIA FAILURE NC SC NC SC NC SC
Exit blank 0 0 10 16 01
Velocity
Incorrect 50 62 69 18 01
Total %
Failure
by SCC of
at Least
One Criteria 100 81 96 92 60 86
3-07-001-04/06 3-05-007-01/02 ovt;RALL
m FAILURE
NC SC NCU; SC RATE
0 0 — 14 3
33 50 — 29 20
78 92 — 100
There were no sources with this SCC in the Nortli Carolina file.
(2)
-------
It can be further concluded that several iterations of auditing and verifyii g
data may be necessary before the auditing criteria can be refined.
It is recommended that any computerized validation program be tested
on real data before it is finally adopted by EPA. The data from a minimum of
two states should be tested in this recommended effort. The anomalies identi-
fied must be verified. Also, randomly selected data from records which passed
the audit should be independently verified. Not only can auditing routines
be too sensitive, but also too insensitive. Before these tests are run,
however, a major effort should be made to update the data files so that they
are as complete as possible. A computerized auditing program which has been
subjected to such tests can be quite useful in improving the quality of NEDS
data.
SAROAD AUDITING PROCEDURES
After reviewing possible enhancements of auditing systems for SAROAD,
it was determined, in concurrence with EPA, that the most valuable enhance-
ment would be a list of validation criteria for individual pollutants and
sampling methods delineating maximum and minimum values of data. Because
of limited time and fiscal resources, this development of maximum/minimum
discriminators was limited to those pollutants and sampling methods for which
data were readily available.
Table III-4 lists selected minimum value and maximum value discrimina-
tors for pollutants for which there are EPA designated reference and equiva-
lent methods. These discriminators are based on the required performance
specifications for the methods in accordance with 40 CFR 53 and the lower
detectable limit of sensitivities as determined under the performance tests.
In compiling the table, a complete summary of actual values for the lower
detectable limits as determined by the performance tests was unavailable.
However, EPA specifications require the limit to be at least 0.01 ppm for
ozone, sulfur dioxide and nitrogen dioxide.
Selection of discriminators for methods other than EPA-designated
reference and equivalent methods requires prior knowledge of the measurement
range used, and the lower detectable limit of sensitivity of the method.
111-18
-------
TABLE IH-4
M
I-H
I
SELECTED
Parameter
so2
so
i.
so2
so2
so2
so2
so2
so2
°3
°3
°3
°3
°0
3
°3
o
3
°3
°0
3
CO
CO
CO
NO.,
2
NO,
MINIMUM & MAXIMUM VALUE DISCRIMINATORS
EPA-Designated Method Maximum
EQS-0775-001
EQS-0775-002
EQSA-1 27 5-005
EQSA-127 5-006
EQSA-0276-009
EQSA-0676-010
EQSA-0876-011
EQSA-0876-013
RFOA-1075-003
RFOA-107 5-004
RFOA-0176-007
RFOA-107 6-01 4
RFOA-107 6-015
RFOA-1076-016
RFOA-] 17 6-017
EQOA-0577-019
RFOA-057 7-020
RFCA-027 6-008
RFCA-0876-OJ2
RFCA-0177-018
RI-NA-0677-021
RFNA-0777-022
FOR EPA
Value
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
50
50
50
0.5
0.5
DESIGNATED METHODS
(ppm) Minimum \
*
ft
ft
0.004
0.003
*
*
ft
*
0.002
0.001
ft
ft
*
*
ft
ft
0.500
0.500
0.500
*
*
*Performance Specifications require a lower detectable limit of at. least 0.01 ppm.
-------
Because the lower detectable limit may be affected by such factors as sam-
pling rate and instrument averaging time, these variables must be also taken
into account when determining the lower detectable limit of sensitivity.
A feasibility analysis was performed to develop screening criteria or
discriminators for use in identifying raw SAROAD data which fall outside the
range and/or sensitivity of measurement methods. The following conclusions
were drawn.
1. It is feasible to develop a set of minimum and maximum value
discriminators for those pollutants for which there are EPA-designated
reference and equivalent methods. Such designated methods require
use of one specific measurement range, and conformity with specific
performance specifications including the lower detectable limit of
sensitivity.
2. Development of minimum/maximum discriminators for pollutants measured
by methods other than designated reference or equivalent methods is
not feasible, because of the greater diversity of procedures and
instrumentation being used which are based on the same principles
of measurement and are assigned the same method code. Such procedures,
manual or instrumental, may or may not have the same sensitivity and
may be used on one of several different measurement ranges.
3. The establishment of a maximum value discriminator based on a method's
measurement range as opposed to the current system of using a single
maximum value for each parameter code will provide more realistic
auditing. However, the establishment of such a system would require
the inclusion of a measurement range code in the SAROAD Parameter
Method File.
4. The establishment of a minimum value discriminator based on a method's
lower detectable limit of sensitivity can be readily accomplished by
using the minimum detectable values which are maintained in the Para-
meter Method File. An audit using the minimum value discriminator
will have little consequence, however, because it is not unusual for
many pollutants to occur at ambient concentrations which are less than
the lower detectable limit of sensitivity of a method. For some
111-20
-------
parameters, such as methane and suspended particulate, ambient con-
centrations remain well above the minimum detectable values due to
high natural background levels. In such cases, the lower detectable
limit of sensitivity is a poor choice for a discriminator.
GENERAL CONCLUSIONS AND RECOMMENDATIONS
NADB certainly needs computerized auditing systems for NEDS and SAROAD
data because of the importance of preserving the integrity and quality of
these data coupled with the enormity of the task of auditing all the data in
NEDS and SAROAD. The proposed validation module is a significant step beyond
existing programs such as NE061. Its development should go forward. Yet,
the validation module under development is not perfect. Some major improve-
ments to the module are recommended and, if accepted, these enhancements
should significantly improve the auditing criteria included in the module.
It must be emphasized, however, that any system should be thoroughly tested
before being adopted for use. As anomalous data are identified by an audi-
ting system and verified by the originators, the auditing system could be
subjected to continuous testing to determine its precision and accuracy.
111-21
-------
CHAPTER IV
FEASIBILITY OF A QUALITATIVE INDEX FOR NEDS
Whenever a vast quantity of data is handled by a computerized system
such as the National Emissions Data System (NEDS), inevitably there are
questions about the "quality" of the data in the system. Quality refers
not only to the correctness of the data in a file but also to the complete-
ness of the file and its age. One must know if the data to be used for such
activities as air quality maintenance planning are correct, complete, and
current. In an effort to address this issue related to the quality of NEDS
data, the National Air Data Branch (NADB) requested that a proposed Emission
Inventory Quality Index be reviewed to determine its feasibility, recommended
improvements be made to this proposed index, or a new index be developed.
REVIEW OF PROPOSED EMISSION INVENTORY QUALITY INDEX
The Emission Inventory Quality Index (EIQI) which has been proposed in-
cludes seven key 'elements which could be used to judge the quality of a NEDS
data file:
1. Base Year. If the data in a file are more than two years old, major
updates and revisions, which would be necessary to reflect what may
be substantial changes in the emission inventory, may not have been
made. Thus, the age of the data file is of considerable importance
in judging its quality.
2. Semiannual Report Currency. Each state is required by Environmental
Protection Agency (EPA) regulations to report semiannually emissions
and other related data for all new sources, sources that cease oper-
ation, and sources which achieve compliance during the reporting
period (40 CFR 51.7). If the NEDS file has not been updated with
these semiannual reports, it will not be current and may not be
complete. The semiannual reporting requirement is not sufficient,
however, to ensure that the file will be completely updated. Semi-
annual reports should be used to supplement periodic inventory
updates.
IV-1
-------
3. Verification File. EPA is attempting to create a "verification
file" of sources not presently in NEDS by using information avail-
able from Dunn and Bradstreet, state industrial directories, and
other similar references. The Regional offices, in liaison with the
states, have been requested to verify the existence of point sources
in the verification file and to determine if those that exist should
be incorporated into NEDS. The size of the verification file for a
particular state when compared with the size of the state's NEDS
file is an indication of the completeness of the NEDS file.
4. NEDS/CDS Mismatches. Sources which appear in Compliance Data
System (CDS) should be present in NEDS. Efforts are underway to
eliminate these mismatches.
5. SIEFA. The Source, Inventory, and Emission Factor Analysis (SIEFA)
computer program is supposed to provide an indication of the preci-
sion and accuracy of a state's emission inventory.
6. Data Anomalies. As described in Chapter III, NADB is developing
computerized data auditing systems to identify apparent data
anomalies. NEDS users often identify data anomalies, as well.
The number of anomalies identified by either method is an indica-
tion of the correctness of NEDS data.
7. Missing Items. NADB has an automated system for identifying items
missing from a NEDS file. Only key items which are not included in
edit checks, i.e., those items which will cause the entire data set
to be rejected, should be considered. Years of record, city, Stand-
ard Industrial Classification (SIC) , and estimation method cannot be
considered, because if they are missing the data set will be rejected.
On the other hand, contact personnel and all Card 5 data should be
excluded because they are not key data.
A single EIQI can be calculated using a multiple linear equation to combine
these seven quality factors. Of necessity, this formula causes some factors
to be given more importance than others.
Neither the EIQI or any other proposed indices should be adopted at this
time. An index should be simple and readily understood and all of the proposed
indices are much too complex. Although the factors identified are important,
IV-2
-------
there is considerable disagreement concerning their relative importance.
Many of the inputs to an index are still in the development stage. An im-
proved automated data auditing system would be particularly useful for input
to an index. For all of these reasons, an EIQI is not feasible at present.
CONCLUSIONS AND RECOMMENDATIONS
There is, however, much that could be done during the next few years to
hasten the implementation of a NEDS data quality index, although such index
is not currently feasible. NADU should supply a statistical quality report
on each state's data files to NEDS users. These reports could be output by
an automated auditing system. Few software modifications would be necessary.
In general, the reports would identify the percentage of records in a file
which fail to pass individual validation criteria. (A format similar to
Table III-3 could be used.) Other quality measures such as completeness and
age could be incorporated as well. These reports could be used to identify
problems with the data files, as well as provide a method for comparing the
quality of a state's file with that of another state.
IV-3
-------
APPENDIX A
CODES PROPOSED BY TACB
-------
ADDITIONS TO':;EDS SOURCE CLASSIFICATION CODES
INDUSTRIAL PROCESS - CHEMICAL MANUFACTURING
Plastics
3-01-018-06 High Density Polyethylene
-07 Low Density Polyethylene
-08 Polybutadiene
-09 Polypropylene
-10 Polystyrene
Units
Tons Product
Phthalic Anhydride
3-01-019-01 via Naphthalene
-02 via 0-Xylene
Amines/Amides
3-01-03U-02 Diethylamine
-03 tertButylanine
-Oh Ethanolajnine
-05 Ethyler.eamine
-06 Hexame'chylenedianyLne
-07 nPropylarr.ine '
-08 Urea
Acetaldehyde
3-01-131-01 General
-02 via Ethylene
-03 via Ethanol
ice-tic Acid
3-01-132-01 General
-02 via Methanol
-03 via Butane
-Ok via Acetaldehyde
Acetic Anhydride
3-01-133-01 General
-02 via Acetic Acid
-03 via Ethylene Oxidation
Acetone Cyanohydrin
3-01-13^-01 General
-------
INDUSTRIAL PROCESS - CHEMICAL MANUFACTURING continued
Acetonitrile
3-01-135-01 General
Units
Tons Product
Acetylene
3-01-136-01 General
Acrylates
3-01-137-01 Butyl Acrylate
-02 Ethyl Acrylate
-03 Methyl Acrylate
-Ok Butyl Methacrylate
-05 isoButyl Methacrylate
-06 Ethyl Methacrylate
-07 Methyl Methacrylate
-99 Other/Not Classified
Acrylic Acid
3-01-138-01 General
Acrylonitrile
3-01-139-01 General
Adiponitrile
3-01-lUO-Ol General
-02 via Adipic Acid
-03 via Butadiene
Allyl Alcohol
3-01-lUl-Ol General
Allyl Chloride
3-01-1U2-01 General
it
it
ii
it
Aniline
3-01-1U3-01 General
-------
INDUSTRIAL PROCESS - c?".:::.:;.L MANUFACTURING continued
Bisphenol A
3-01-lUU-Ol General
nButyl Alcohol
3-01-11*5-01 General
secButyl Alcohol
3-01-IU6-01
isoButyl Alcohol
3-01-1U7-01 Gerersl
tertButyl Alcohol
3-01-lUS-Cl General
nButyl Chlorice
3_0l-ll| 9-011 General
1,3-Butylene Glycol
3-01-150-01 General
Butyraldehyde
3-01-151-01 Genc-ril
Carbon Dis\ilfide
3-01-152-01 General
Carbon Tetrachloride
3-01-153-01 Ger.-:.-al
f
Cellosolves*
3-01-15^-01 General
Units
Tons Product
-------
j (JSTRIAL PROCESS - CHEMICAL M/-.:?UFACTURIiTG cor.tir.
Chlorohydrins
3-01-155-01 General
Chloroform
3-01-156-01 General
Chloroprene
3-01-157-01 General
Cyclohexanol
3-01-158-01 General
Cyclohexanone
3-01-159-01 General
Dichlorobutene
3-01-160-01 General
Dichloroethane
3-01-161-01 General
-02 1,1-DichloroGthane
-03 1,2-Dichloroethane
Diethyl Ether
3-01-162-01 General
Diisopropyl Ether
3-01-163-01 General .
Dimethyl Terephthalate (+TPA)
3-01-16U-01 General
Units
Tons Producl
-------
INDUSTRIAL PROCESS - CHEMICAL MANUFACTURING continued
l,U-Dioxane
3-01-165-01 General
Dipropyl Ether
3-01-166-01 General
Ethyl Acetate
3-01-167-01 General
Ethyl Alcohol
3-01-168-01 General
Ethyl Benzene
3-01-169-01 General
Ethyl Chloride
3-01-170-01 General
Ethylene
3-01-171-01 General
1,2-Ethylene Dichloride
3-01-172-01 General
Ethylene Glycol
3-01-173-01 General
Ethylene Oxide
3-01-17^-01 General
Freons
3-01-175-01 General
Units
Tons Product
-------
INDUSTRIAL PROCESS - CHEMICAL MAI7JFACTUPINC- continued
Glycerin
3-OI-1T6-01 General
-02 via Epichlorchydrin
-03 via Allyl Chloride
-OU via-Acrolein-Hycirogen Peroxide
-05 via Propylenr— Chlorine
1,6-Hexanediol
3-01-177-01 General
HydanR
3-01-178-01 General
Units .
Tons Product
n
11
n
Hydrogen Cyanide
3-01-179-01 General
-02 Direct Process
HypalonR
3-01-180-01 General
3-01-15.1-01 General
Isoprene
3-01-162-01 General
Lactic Acid
3-01-153-01 General
Methyl Acetate
3-01-18^-01 General
Methyl Alcohol
3-01--185-01 General
-------
INDUSTRIAL PROCESS - CHEMICAL MANUFACTURING continued
Methyl Chloride
3-01-186-01 General
Methyl Chloroform
3-01-187-01 General
Methyl isoButyl K^tone
3-01-188-01 General .
Methacrylonitrile
3-01-189-01 General
Methylcyclohexane
3-01-190-01 General
Methylcyclopentane
3-01-191-01 General
Methyl Ethyl Ket'one
3-01-192-01 General
Methyl Propyl Ether
3-01-193-01 General
Methylene Chloride
3-01-19U-01 General
Nitromethane
3-01-195-01 General
NordelR
3-01-196-01 General
Units
Tons Product
-------
TTCC r'lj-^^Tp * r >*•• *-»rr? A fmrr^T1**.';
I.^Ji^ •• ^*.—.- : JuwrlJ-i .'-r-i* L; /."*»«-• j. v i • • . - ^/
Olefins
3-01-197-01 Ethylene
-02 Fropylene
-03 Butylene
-99 Other/Not Classified
Oxo Process
3-01-198-01 General
Paraformaldehyde
3-01-199-01 General
Perchloroethylene
3-01-200-01 General
Pentaerythritol
3-01-201-01 General
Phenol
3-01-202-01 General
isoPropyl Alcohol
3-01-203-01 General
Propylene Glycol
3-01-20U-01 General
Propylene Oxide
3-01-205-01 General
Styrene
3-01-206-01 General
Units
Tons Product
it
M
II
-------
INDUSTRIAL PROCESS - CHEMICAL .".^"UrACTi:? .IITG cor.tir.UGC
Tetraethyl Lead
3-01-207-01 General
Tetrahydrofuran
3-01-208-01 General
Trichloroethylene
3-01-209-01 General
Trinethylolpropane
\
3-01-210-01 General
Units
Tons Product
Triton
R
3-01-211-01 General
Vinyl Acetate
3-01-212-01 General
-02 via Acetylene
-03 via Ethylene
Vinyl Chloride
3-01-213-01 General
Vinylidene Chloride
3-01-21U-01 General
VoranolR
3-01-215-01 General
-------
INDUSTRIAL PROCESS - PRIMARY METALS
Units
Aluminum Ore - Bauxite
3-03-000-02 Alumina Xfg. Tons Product
Aluminum Ore - Electroljrtic Reduction
3-03-001-06 Ingot Casting Tons Metal
-07 Aluminum Fluoride Mfg. Tons Produced
-08 Cryolite Mfg. "
Iron Production
3-03-008-09 Ingot Casting Tons Metal
-10 Ore Calcining Tons Produced
Magnesium - Electrolytic
3-03-035-01 Magnesium Oxide Kiln Tons Produced
-02 Magnesium Chloride Neutralizer "
-03 Magnesium Chloride Dryer "
-OU Magnesium Chloride Cells Tons Metal
-05 Magnesium Casting/Alloying "
-99 Other/Not Classified "
-------
HDUSTRIAL PROCESS - PETRCLEUV INDUSTRY
Crude Distillation
3-06-OlU-Ol General
Gas Recovery/Liquifaction
3-06-015-01 General
Gas Sveetening
3-06-016-01 General
Hydrogen Treating
3-06-01T-01 General
Aromatic Recovery
3-06-018-01 General
Solvent Extraction
3-06-019-01 General
Acid Treating
3-06-020-01 General
Polymerization
3-06-021-01 General
Isomerization
3-06-022-01 General
Alky1ation
3-06-023-01 General
Dehydrogenation
3-06-02U-01 General
Units
1000 Barrels Processed
Million Cubic Feet Processed
1000 Barrels Charged
1000 Barrels Processed
-------
NDUSTRIAL Pr~CES3 - PETPHLEUV '"DUSTPY continued
Lube Oil
3-06-025-01 General
Delayed Coking
3-06-026-01 General
Calcining
3-06-027-01 General
Waste Water Treatment
3-06-028-01 General
Units
1000 Barrels Processed
1000 Barrels Charged
Tons Processed
1000 Barrels Waste Wate:
-------
INDUSTRIAL PROCESS - riATU::;.! GAS INDUSTRY
Compression
3-10-001-01 Elcvdowri
-02 Futi'civ-c
Units
Million Cubic Feet Processed
it
Dehydration
3-10-002-01 tri Ethylerx- Glycol
-99 Other/Not Classified
ii
it
Gas Sweetening
3-10-003-01 M2A Process w/Flare
-02 MEA Process v/Incinerator
• -99 Other/ICot Classified
it
it
it
Natural Gas Liquids
3-10-OOU-01 Refrigeration
-02 Absorption
-03 Fracticnation
-OU Adsorption
-99 Other/Hot Classified
1000 Gallons Product
tt
tt
tt
it
Flares
3-10-005-01 Waste Gas
Million Cubic Feet
-------
'.'NDUSTRIAL PROCESS - PLASTIC FASEICATI-:
Melamine
3-11-001-01 General
-99 Solvent -Specify
Tons Product
Tons Solvent
Phenolic
3-11-002-01 General
-99 Solvent-Specify
Tons Product
Tons Solvent
Polyester
3-11-003-01 General
-02 Fiberglass
-99 Solvent-Specify
Tons Product
it
Tons Solvent
Polystyrene
3-11-OOU-Ol General
-02 Styrofoam
-99 Solvent-Specify
Tons Product
it
Tons Solvent
Polyurethane
3-11-005-01 General
-99 Solvent-Specify
Tons Product
Tons Solvent
Polyvinyl Chloride
3-11-006-01 General
-99 Solvent-Specify
Tons Product
Tons Solvent
Other/Not Classified
3-11-999-99 Specify in Remark
Tons Product
-------
3IET SOURCE EVAPORATION - CJ-ZAI-::"G SOLVES?
Units
Surface Wiping
U-01-003-01 Acetone Tons Solvent
-02 Butyl Acetate "
-03 Butyl Alcohol "
-OU Carbitol "
-05 Cellosolve "
-06 Cellosolve Acetate "
-07 Diaethylfornanide "
-08 Ethyl Acetate "
-09 Ethyl Alcohol "
-10 Gasoline
-11 Isopropyl Alcohol
-12 Isopropyl Acetate
-13 Kerosene
-lU Lactol Spirits "
' -15 Methyl Acetate "
-16 Methyl Alcohol "
-17 MEK "
-18 MIBK "
-19 Mineral Spirits "
-20 Naphtha "
__ _ , it
-21 Toluene
-22 Varsol "
-23 Xylene "
-99 Other-Specify
-------
POINT SOURCE EVAPORATION - SURFACE COATING
Units
Sealing Compounds
^-02-010-01 General Tons Coating
-99 Solvent-Specify Tons Solvent
-------
POINT SOURCE EVAPORATION - PSTP.CLEUM PRODUCTION STORAGE
Units
Fixed Roof
U-03-001-17 Breath - Naphtha 1000 Gal Stge Capacity
-18 Breath - Reformate "
It
it
it
it
-19 Breath - Alkylate
-20 Breath - Gas Oil "
-21 Breath - Residual Oil "
-22 Breath - LPG "
-62 Working - Naphtha 1000 Gal Throughput
-63 Working - Reformate "
-6k Working - Alkylate
-65 Working 7 Gas Oil
-66 Working - Residual Oil
-67 Working - LPG
Floating Roof
U-03-002-17 Stand Stge - Naphtha 1000 Gal Stge Capacity
-18 Stand Stge - Reformate
-19 Stand Stge - Alkyiate
-20 Stand Stge - Gas Oil
-21 Stand Stge - Residual Oil
ti
-------
POINT SOURCE EVAPORATION - PETROCHEMICAL STORAGE
Units
Fixed Roof - Breathing
14-oU-OOl-Ol Acetaldehyde 1000 Gal Stge Capacity
-02 Acetic Acid "
-03 Acetic Anhydride "
-OU Acetone "
-05 Acetonitrile "
-06 Acrylonitrile "
-07 Allyl Alcohol "
-08 Allyl Chloride "
-09 Butadiene "
-10 secButyl Alcohol "
-11 isoButyl Alcohol "
-12 tertButyl Alcohol "
-13 nButyl Chloride "
-lU Carbon Tetrachloride "
-15 Chloroform "
-16 Chloroprene "
-17 Cumene "
-18 Cyclohexanone "
-19 Dichloroethane "
-20 Dichloropropylene (PDC) "
-21 Diethyl Ether "
-22 Diethylamine "
-23 Diisopropyl Ether "
-2k l,U-Dioxane "
-25 Dipropyl Ether "
-26 Ethyl Acetate "
-27 Ethyl Acrylate "
-28 Ethyl Alcohol "
-29 Ethyl Benzene "
-30 Ethylene "
-31 1,2-Ethylene Dichloride "
-32 Ethylene Oxide "
-33 Freon 11
-3^ Isoprene "
-35 Isocyanates "
-36 Methacrylonrcrile "
-37 Methyl Acetate "
-38 Methyl Acrylate "
-39 Methyl Alcohol "
-Uo Methylcyclohexane "
-1»1 Methylcyclopentane "
-U2 Methylene Chloride "
-1*3' Methyl Ethyl Ketone "
-kh Methyl Kethacrylate (i-IMA) "
-U5 Methyl Propyl Ether "
-1*6 Nitromethane "
-1*7 Phenol "
-148 Propane Dichloride "
-1*9 Propionaldehyde "
-------
POINT SOURCE EVAPORATION - PETROCHEMICAL STORAGE continued
Units
Fixed Roof - Breathing (continued)
U-OU-001-50 isoPropyl Alcohol 1000 Gal Stge Capacity
-51 nPropylamine "
-52 Propylene Oxide "
-53 Styrene "
-5U Tetrahydrofuran "
-55 1,1,1-TrichIoroethane "
-56 Trichloroethylene "
-57 Trichloropropylene "
-58 Vinyl Acetate "
-59 Vinyl Chloride "
-60 Vinylidene Chloride "
-6l Xylene "
-99 Other/Not Classified "
Fixed Roof - Working
U-OU-005-01 Acetaldehyde 1000 Gal Throughput
-02 Acetic Acid "
-03 Acetic Anhydride "
-Ok Acetone "
-05 Acetonitrile "
-06 Acrylonitrile "
-07 Allyl Alcohol "
-08 Allyl Chloride "
-09 Butadiene "
-10 secButyl Alcohol
-11 isoButyl Alcohol "
-12 tertButyl Alcohol "
-13 nButyl Chloride "
-Ik Carbon Tetrachloride "
-15 Chloroform "
-16 Chloroprene "
-17 Cumene
-18 Cyclohexanone "
-19 Dichloroethar.e "
-20 Dichlorcpropylene (PDC) "
-21 Diethyl Ether "
-22 Diethylamine
-23 Diisopropyl Ether "
-2k l,U-Dioxane "
-25 Dipropyl Ether
-26 Ethyl"Acetate "
-27 Ethyl Acrylate "
-28 Ethyl Alcohol "
-29 Ethyl Benzene
-30 Ethylene
-31 1,2-Ethyleae Dichloride "
-32 Ethylene Oxide "
-------
POINT SOURCE EVAPORATION - PETROCHEMICAL STORAGE continued
Units
Fixed Roof - Working (continued)
l*-Ol*-005-33 Freon 11 1000 Gal Throughput
-3l* Isoprene
-35 Isocyanates
-36 Methacrylonitrile
-37 Methyl Acetate "
-38 Methyl /-.crylate "
-39 Methyl Alcohol
-1*0 Methylcyclohexane
-1*1 Methylcyclopentane
-1*2 Methylene Chloride
-1*3 Methyl Ethyl Ketone "
-1*1* Methyl Methacrylate (MMA) "
-1*5 Methyl Propyl Ether "
-1*6 Nitroraethane
-1*7 Phenol "
-1*8 Propane Bichloride "
-1*9 Propionaldehyde "
-50 isoPropyl Alcohol "
-51 nPropylamine
-52 Propylene Oxide "
-53 Styrene
-5l* Tetrahydrofuran "
-55 1,1,1-Trichloroethane "
-56 Trichloroethylene "
-57 Trichloropropylene "
-58 Vinyl Acetate "
-59 Vinyl Chloride "
-60 Vinylidene Chloride "
-6l Xylene "
-99 Other/Not Classified "
Floating Roof - Standing
U-OU-010-01 Acetaldehyde 1000 Gal Stge Capacity
-02 Acetic Acid
n
-03 Acetic Anhydride "
-Ol* Acetone "
-05 Acetonitrile "
-06 Acrylcnitrile "
-07 Allyl Alcohol "
-08 Allyl Chloride "
-09 Butadien-e "
-10 secButyl Alcohol "
-11 isoButyl Alcohol "
-12 tertButyl Alcohol "
-13 nButyl Chloride "
-ll* Carbon Tetrachloride "
-15 Chloroform "
-------
POINT SOURCE EVAPORATION - PETROCHEMICAL STORAGE continued
Units
Floating Roof - Standing (continued)
lt-OU-010-l6 Chloroprene 1000 Gal Stge Capacity
-IT Cumene "
-18 Cyclohexanone "
-19 Dichloroethane "
-20 Dichloropropylene (PDC) "
-21 Diethyl Zther "
-22 Diethylamine "
-23 Diisopropyl Ether "
-2U l,U-Dioxane "
-25 Dipropyl Sther "
-26 Ethyl Acetate "
-27 Ethyl Acrylate "
-28 Ethyl Alcohol "
-29 Ethyl Benzene "
-30 Ethylene "
-31 1,2-Ethylene Bichloride "
-32 Ethylene Oxide "
-33 Freon 11 "
-3^ Isoprene "
-35 Isocyanates "
-36 Methaerylonitrile "
-37 Methyl Acetate "
-38 Methyl Acrylate "
-39 Methyl Alechoi "
-ko Methylcyclohexane "
-Ul Methylcyclcpentane "
-1*2 Methylene Chloride "
-h3 Methyl Ethyl Ketone "
-kk Methyl Methacrylate (I-S4A) "
-U5 Methyl Propyl Ether
-U6 Nitromethane "
-1*7 Phenol "
-it8 Propane Dichloride "
-i;9 Propionaldehyde "
-50 isoPropyl Alcohol "
-51 nPropylardne "
-52 Propylene Oxide "
-53 Styrene "
-5^ Tetrahydrofuran "
-55 1,1,1-Trichloroethane "
-56 Trichloroethylene "
-57 Trichlorcpropylene "
-58 Vinyl Acetate "
-59 Vinyl Chloride "
-60 Vinylldene Chloride "
-6l Xylene "
-99 Other/Not Classified "
Other/Not Classified
U-0^-999-99 Specify in Remark 10°° Gal Stored
-------
"
POINT SOURCE EVAPORATION - PETROCEEMICAL MARKETING & TRAiATSPORTATIOM
Units
Tank Cars/Trucks - Splash Load
4-10-001-01 Acetaldehyde 1000 Gal Transferred
-02 Acetone, "
-03 Acetonitrile "
-OU Acrylonitrile
-05 Allyl Alcohol "
-06 Allyl Chloride "
-07 isoButyl Alcohol
-08 tertButyl Alcohol "
-09 nButyl Chloride "
-10 Carton Tetrachloride "
-11 Chloroform "
-12 Chloroprene "
-13 Cumene "
-14 Cyclohexanone "
-15 Cyclopentane "
-16 Dichloroethane
-17 1,2-Dichloroethylene "
-18 Diethyl Ether "
-19 Diethylamine "
-20 Diisopropyl Ether "
-21 l,U-Dioxane
-22 Dipropyl Ether "
-23 Ethyl Acetate "
-2U Ethyl Alcohol "
-25 Ethylbenzene "
-26 Freon 11 "
-27 Heptane "
-28 Hexane "
-29 Isoprene "
-30 Methacrylonitrile "
-31 Methyl Acetate "
-32 Methyl Alcohol "
-33 Methylcyclohexane "
-3^ Methylcyclopentane "
-35 Methylene Chloride "
-36 Methyl Ethyl Ketone "
-37 Methyl Propyl Ether "
-38 Nitromethane "
-39. isoOctane "
-40 Pentane "
-41 isoPentane "
-42 nPropylanine "
-*43 isoPropyl Alcohol "
-44 Styrene
-45 Toluene "
-46 1,1,1-Trichloroethane "
-47 Trichloroethylene "
-48 Vinyl Acetate "
-49 Vinyl Chloride "
-50 Vinylidene Chloride "
-51 Xylene "
-99 Other/Not Classified "
"
-------
POINT SOURCE EVAPORATION - PETROCHEMICAL MARKETING & TRANSPORTATION ccntir.ued
Tank Cars/Trucks
U-10-005-01
-02
-03
-OU
-05
-06
-07
-08
-09
-10
-11
-12
-13
-1U
-15
-16
-17
-18
-19
-20
-21
-22
-23
-2k
-25
-26
-27
-28
-29
-30
-31
-32
-33
-3k
-35
-36
-37
-38
-39
-UO
-Ul
-1+2
-U3
-kk
-U5
-U6
-1*7
-1*8
-1*9
-50
-51
-99
- Submerged Load
Acetaldehyde
Acetone
Acetonitrile
Acrylonitrile
Allyl Alcohol
Allyl Chloride
isoButyl Alcohol
tertButyl Alcohol
nButyl Chloride
Carbon Tetrachloride
Chloroform
Chloroprehe
Cumene
Cyclohexanone
Cyclopentane
Dichloroethane
1,2-Dichloroethylene
Diethyl Ether
Diethylamine
Diisopropyl Ether
l,U-Bioxane
Dipropyl Ether
Ethyl Acetate
Ethyl Alcohol
Ethylbenzene
Freon 11
Heptane
Hexane
Isoprene
Methacrylonitrile
Methyl Acetate
Methyl Alcohol
Methylcyclohexane
Methylcyclopentane
Methyl en e Chloride
Methyl Ethyl Ketone
Methyl Propyl Ether
Nitromethane
isoOctane
Pentane
isoPentane
nPropylamine
isoPropyl Alcohol
Styrene
Toluene
1 ,1 ,1-Trichloroethane
Trichloroethylene
Vinyl Acetate
Vinyl Chloride
Vinylidene Chloride
Xylene
Other /Hot Classified
Units
1000 Gal Transferred
11
n
n
it
tt
n
tt
tt
11
n
ti
ii
"
it
it
it
it
it
n
it
n
it
it
n
n
n
it
it
it
"
it
it
n
it
ii
ti
it
ti
it
11
n
it
it
tt
"
n
tt
"
"
tt
it
-------
POINT SOURCE EVAPORATION - PETROCHEMICAL STORAGE continued
Units
Fixed Roof - Working (continued)
U-OU-005-33
-3U
-35
-36
-37
-38
-39
-Uo
-Ul
-U2
-U3
-UU
-U5
-U6
-U7
-US
-1*9
-50
-51
-52
-53
-5U
-55
-56
-57
-58
-59
-60
-61
-99
Floating Roof -
U-OU-010-01
-02
-03
-OU
-05
-06
-07
-08
-09
-10
-11
-12
-13
-lU
-15
Freon 11
Isoprene
Isocyo. nates
Methacrylonitrile
Methyl Acetate
Methyl Acrylate
Methyl Alcohol
Met hylcyc lohexane
Methylcyclopentar.e
Methylene Chloride
Methyl Ethyl Ketone
Methyl Methacrylate (MMA)
Methyl Propyl Ether
Nitroraethar.e
Phenol
Propane Bichloride
Propionaldehyde
isoPropyl Alcohol
nPropylamine
Propylene Oxide
Styrene
Tetrahydrofuran
1,1,1-Trichloroethane
Trichloroethylene
Trichloropropylene
Vinyl Acetate
Vinyl Chloride
Vinylidene Chloride
Xylene
Other/Kot Classified
Standing
Ac et aldehyde
Acetic Acid
Acetic Anhydride
Acetone
Acetonit.rile
Acrylcnitrile
Allyl Alcohol
Allyl Chloride
Butadiene
sec Butyl Alcohol
isoButyl Alcchol
tertButyl Alcohol
nButyl Chloride
Carbon Tetrachloride
Chloroform.
1000 Gal Throughput
11
it
ii
it
n
ii
it
n
n
n
it
it
11
it
ii
tt
it
n
it
it
it
it
n
n
ii
n
ii
tt
M
1000 Gal Stge Capac:
ii
it
it
n
n
n
n
n
it
ti
ii
n
ii
it
-------
POINT SOURCE EVAPORATION - PETROCHEMICAL MARKETING & TRANSPORTATION continued
Marine Vessels
U-lO-015-01
-02
-03
-OU
-05
-06
-07
-08
-09
-10
-11
-12
-13
-Ii*
-15
-16
-17
-18
-19
-20
-21
-22
-23
-2l*
-25
-26
-27
-28
-29
-30
-31
-32
-33
-3U
-35
-36
-37
-38
-39
-1*0
-1*1
-1*2
-1*3
-1*1*
—1*5
-1*6
-1*7
-1*8
-1*9
-50
-51
-99
- Load
Ac tt aldehyde
Acetone
Acstonitrile
Acrylonitrile
Allyi Alcohol
Allyl Chloride
isoButyl Alcohol
tertButyl Alcohol
nButyl Chloride
Carbon Tetrachloride
Chloroform
Chloroprene
Curtene
Cyclohexancne
Cyclopentane
Bichloroethane
1 , 2-Dichloroethylene
Di ethyl Ether
Diethylamine
Diisopropyl Ether
l,l*-Dioxane
Dipropyl Ether
Ethyl Acetate
Ethyl Alcohol
Ethylbenzene
Freon 11
Heptane
Hoxane
Isoprene
Methacrylonitrile
Methyl Acetate
Methyl Alcohol
M&thylcyclohexane
Met hyl cycle-pent ane
Methylene Chloride
Methyl Ethyl Ketone
Methyl Propyl Ether
Nlti'omethane
.isoOctane
Pent ane
isoPentane
nPropylamine
isoPropyl Alcohol
Styrene
Toluene
1 ,1 ,1-Trichloroethane
Trichloroethylene
Vinyl Acetate
Vinyl Chloride
Vinylidene Chloride
Xylene
Other/Not Classified
Units
1000 Gal Transferred
n
it
n
it
it
tt
it
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
ii
n
n
n
ii
n
n
n
n
n
n
n
it
n
n
n
n
it
•fi
it
ii
it
it
n
ti
it
-------
POINT SOURCE EVAPORATION - PETRQCK&MICAL MARKETING & TRANSPORTATION continued
Units
Marine Vessels - Load
U-10-015-01 Acetaldehyde 1000 Gal Transferred
-02 Acetone
-03 Acstonitrile
-OU Acrylonitrile
-05 Allyl Alcohol "
-06 Allyl Chloride "
-07 isoButyl AlcohSl "
-08 tertButyl Alcohol JJ
-09 nLutyl Chloride
-10 Carbon Tetrachloride
-11 Chloroform
-12 Chloroprene
-13 Cuirene
-lU Cyclohexancne
-15 Cyclopentane
-l6 Dichloroethane
-17 1,2-Dichloroethylene
-18 Diethyl Ether "
-19 Diethylamine "
-20 Biisopropyl Ether
-21 l,U-Didxane
-22 Dipropyl Ether "
-23 Ethyl Acetate "
-2U Ethyl Alcohol "
-25 Ethylbenzene
-26 Freon 11 "
-27 Heptane "
-28 Ilexane
-29 Isoprene "
-30 Methacrylonitrile "
-31 Methyl Acetate "
-32 Methyl Alcohol "
-33 Kfcthylcyclohexane "
-3^ Methylcyclopentane
-35 Methylene Chloride "
-36 Methyl Ethyl Ketone "
-37 Methyl Propyl Ether "
-33 Hitromethane "
-39 ' isoOctane "
-UO Pentane "
-Ul isoPentane "
-k2 nPropylamine "
-i*3 isoPropyl Alcohol "
-kk Styrene "
-^5 Toluene "
-b6 1,1,1-Trichloroethane "
-U7 Trichloroethylene "
-U8 Vinyl Acetate "
-1*9 Vinyl Chloride "
-50 Vinylidene Chloride "
-51 Xylcne
-99 -Other/Not Classified "
-------
!?OINT SOURCE EVAPORATION - PETROCHEMICAL MARKETING & TRANSPORTATION continued
Tank Cars /Trucks
4-10-010-01
-02
-03
-04
-05
-06
-07
-08
-09
-10
-11
-12
-13
-14
-15
-16
-17
-18
-19
-20
-21
-22
-23
-24
-25
-26
-27
-28
-29
-30
-31
-32
-33
-34
-35
-36
-37
-38
-39
-ho
-4i
-42
-43
-44
-45
-46
-47
-48
-49
-50
-51
-99
- Unload
Ac et aldehyde
Acetone
Acetonitrile
Acrylonitrile
Allyl Alcohol
Allyl Chloride
isoButyl Alcohol
tertButyl Alcohol
nButyl Chloride
Carton Tetrachloride
Chloroform •
Chloroprene
Cumene
Cyclohexanone
Cyclopentane
Dichloroethane
1 ,2-Dichloroethylene
Diethyl Ether
Diethylamine
Diisopropyl Ether
1 , 4-Dioxane
Dipropyl Ether
Ethyl Acetate
Ethyl Alcohol
Ethylbenzene
Preon 11
Heptane
Hexane
Isoprene
Methacrylonitrile
Methyl Acetate
Methyl Alcohol
Methylcy c lohexane
Methylcyclopentane
Methylene Chloride
Methyl Ethyl Ketone
Methyl Propyl Ether
Nitronethane
isoOctane
Pentane
isoPentane
nPropylamine
isoPropyl Alcohol
Styrene
Toluene
1,1,1-Trichloroethane
Trichloroethylene
Vinyl Acetate
Vinyl Chloride
Vinylidene Chloride
Xylene
Other/Not Classified
Units
1000 Gal Transferred
it
ii
it
it
ii
it
it
it
ii
n
tt
n
M
II
II
II
It
II
II
II
II
II
II
II
If
II
II
It
It
II
II
It
It
IT
II
It
tt
II
tt
II
It
•II
II
It
II
It
It
II
It
II
II
-------
POINT SOURCE EVAPORATION - PETROCHEMICAL MARKETING & TRANSPORTATION continued
Units
Marine Vessels - Unload
H-10-020-01 Acetaldehyde 1000 Gal Transferred
-02 Acetone "
-03 Acetonitrile "
-Ok Acrylonitrile "
-05 Allyl Alcohol "
-06 Allyl Chloride "
-07 isoButyl Alcohol "
-08 tertButyl Alcohol . "
-09 nButyl Chloride "
-10 Carbon Tetrachloride "
-11 Chloroform "
-12 Chloroprene "
-13 Cuiaene "
-lU Cyclohexanone "
-15 Cyclopentane "
-16 Dichloroethane "
-17 1,2-Dichloroethylene "
-18 Diethyl Ether "
-19 Diethylamine "
-20 Diisopropyl Ether "
-21 l,U-Dioxane "
-22 Dipropyl Ether "
-23 Ethyl Acetate
-2k Ethyl Alcohol "
-25 Ethylbenzene "
-26 Freon 11 "
-27 Heptane "
-23 Hexane "
-29 Isoprene "
-30 Methacrylonitrile "
-31 Methyl Acetate "
-32 Methyl Alcohol "
-33 Methylcyclohexane "
-3k Methylcyclopentane "
-35 Methylene Chloride "
-36 Methyl Ethyl Ketone "
-37 Methyl Propyl Ether "
-38 Nitromethane "
-39 isoOctane "
-kO Pentane "
-Ul isoPentane "
-k2 nPropylamine "
-k3 isoPropyl Alcohol "
-kk Styrene "
-U5 Toluene "
-1+6 1,1,1-Trichloroethane "
-1+7 Trichlorcethylene "
-U8 Vinyl Acetate "
-1+9 Vinyl Chloride "
-50 Vinylidene Chloride "
-51 Xylene "
-99 Other/Not Classified "
-------
APPENDIX B
CODES PROPOSED BY RADIAN
-------
Symbols in Che far right hand column of the Source Classi-
fication Code tables indicate the action taken to revise each code
These symbols represent the following actions:
Symbol Action
* No changes were made to the existing EPA SCC.
4- No changes were made to the newly added TACB
(Texas'Air Control Board) SCC.
1 Both the source title and emission factor were
changed for an existing EPA SCC.
2 Both the source title and emission factor were
changed for a newly added TACB SCC.
3 A new SCC was added.
4 Only the emission factor was changed for an
existing EPA SCC.
5 Only the emission factor was changed for a newly
added TACB SCC.
-------
KKVISED SCC LISTINGS
Fixed Roof
4-03-001-01
4-03-001-02
4-03-001-03
4-03-001-04
4-03-001-05
4-03-001-06
4-03-001-07
4-03-001-08
4-03-001 -09
4-03-001-10
4-03-001-11
4-03-001-12
4-0 3-001-1'i
4-03-001-14
4-03-001-15
4-03-001-16
4-03-001-17
4-03-001-18
4-03-001-19
4-03-001-20
4-03-001-21
4-03-001-22
4-03-001-23
4-02-001-24
4-02-001-21)
Source
Breath-Gasoline < 100,000 hbl
Breath-Crude < 100,000 bbl
Workijig-fiasollne
Working-Crude
Breath-JP-4 < 100,000 bbl
Breath-.Iet Kero < 100,000 bbl
Breath-Dist No. 2 < 100,000 bbl
Breath-Benzene
Breath-Cyclohexane
Breath-Cyclopentane
Breath-Heptane
Breath-llexane
Breath-Isooctane
Breath- Isopentane
Breath-Pentane
Breath-Toluene
Breath-Naphtha
Ureath-Ketormate
Dreaih-Alkylate
Breath-Cas Oil
Hreath-Keaid No. <100,000 bbl
Breath-l.l'G
Breath-Gasoline > 100,000 bbJ
Breath-Crude > 100,000 bbl
Brealh-.JP-4 - 100,000 bbl
Part
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
S0x
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
NO
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
IIC
84.
20.
a.
2.
31.
1.
1.
28.
31.
58.
11.
32.
13.
142-
94.
12.
0
8
2
5
4
6
4
8
0
4
3
1
9
0
9
8
0.06
62.1
15.0
22.6
CO
0
0
0
0
0
0
• 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1000
1000
1000
1000
1000
II
II
II
II
II
II
II
II
II
II
II
II
II
II
II
II
II
II
II
II
gal.
gal.
gal .
gal.
gal.
n
ii
M
. M
n
M
n
n
n
11
n
n
n
n
11
n
n
n
ii
n
Units Action
storage capacity 1
storage capacity 1
throughput 4
throughput 4
storage capacity 1
n n i
1
n n ^
4
n n *
II II £
II II *
II II ^
II II i
II II A
^
+
M II .
f
+
2
4-
M n •>
n n •>
ii n >
-------
RKVISl'l) SCC LISTINGS
Fixed Roof (cont. )
Source
4-03-001-26
A-03-001-27
4-03-001-2H
4-03-001-50
4-03-00L-51
4-03-001-52
4-03-001-53
4-03-001-54
4-03-001-55
4-03-001-56
4-03-001-57
4-03-001-58
4-03-001-59
4-03-001-60
4-03-001-61
4-03-001-62
4-03-001-63
4-03-001-64
4-03-001-65
4-03-001-66
4-03-001-67
4-03-001-«J8
4-03-001-99
Breath-Jet Kero > 100,000 bbl
Ureath-Dist No. 2 > 100.000 bbl
Breath-Resid No. 6 > 100,000 bbl
Working-JP-4
Working-Jet Kero
Working-lust No-. 2
Working-Benzene
Working-Cycloliex
Working-Cyclopent
Working-Heptane
Worklng-llexane
Working-lsooctane
Work!ng-Isopent
WorkIng-Tentane
WorkIng-Toluene
Working-Naphtha
WorkIng-Keformate
Work Ing-Alkylate
Working-Gas Oil
Work ing-lies lil No. 6
Uorking-U'G
breath Specify
Working Specify
Part
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
(,
so
X
0
0
0
0
0
0
0
0
0
0
0
0 •
0
0
0
0
0
0
0
0
0
~N--x
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
lie
l.l
0.10
0.005
2.5
0.027
0.023
2.2
2.4
6.40
1.20
3.60
1.50
15.7
10.6
0.66
0.0002
CO
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1000 gal.
ii n
n n
1000 gal.
n n
ii n
n n
n n
n n
n ii
ii n
ii n
n ii
n M
n n
n ii
n n
n ii
n n
n n
n ii
Units Action
stotage capacity 3
n n 3
n n 2
throughput 1
11 1
4
4
4
«• *
ii *
ii A
Ii A
ii *
n A
4
+
n _i_
+
11 4
5
II _L.
1000 gal. storage capacity
1000 gal. throughput
-------
REVISED SCC LISTINGS
Floating Roof
4-03-002-01
4-03-002-02
4-03-002-03
4-03-002-04
4-03-002-05
4-03-002-06
4-03-002-07
4-03-002-08
4-03-002-09
4-03-002-10
4-03-002-11
4-03-002-12
4-03-002-13
4-03-002-14
4-03-002-15
4-03-002-16
4-03-002-17
4-03-002-18
4-03-002-19
4-0 J-002-20
Source
Standing STG-Gasoline <100,000 bbl
Working-Gasoline <100,000 bbl
Standing STG-Crude <100,000 bbl
Working-Crude
Standing STG-JP-4 <100,000 bbi
Standing STG- Jet Kero <100,000 bbl
Standing STG-DistNo. 2 <100,000 bbl
Standing STG- Benzene
Standing STG-Cyclohex
Standing STG -Cycl open
Standing STG-lleptane
Standing STG-llexane
Standing STG-Iuooctane
Standing STG-lsopentane
Standing STG-Pentane
Standing STG- Toluene
Standing STG-Naphtha
Standing STG-Re formate
Standing STG-Alkylate
Standing STG-Gas Oil
Part
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
S0x
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
NO
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
IK:
12.0
0.023
3.65
4.38
0.197
0.179
4.02
4.38
8.76
1.64
4.75
2.01
20.8
13.9
1.75
CO
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Units Act
1000 gal storage capacity 1
1000 gal throughput 1
1000 gal storage capacity 1
1000 gal throughput A
1000 gal storage capacity 1
n M ii n -I
ii n n n i
n n n n ^
II II M II 1
II II II II A
II II II »l £
II II II II £
II II II II £
II II II II £
II II II II £
II II II II /
II II II II ,
1
II II II II 1
II II II II ,
-------
sec LISTINGS
Floating Roof Cont.
Source
4-03-002-21
4-03-002-22
4-03-002-23
4-03-002-24
4-03-002-25
4-03-002-26
4-03-002-27
4-03-002-28
Standing STG-Resld No. 6
<100,000 bbl
Standing STG-Gasoline
>100,000 bbl
o
o
Working-Gasoline >100,000 bbl 0
Standing STC-Crude >100,000 bbl 0
Standing STG-JP-4 >100.000 bbl 0
Standing STG-Jec Kero >100,000 bbl 0
0
Standing STG-Dlst. No. 2
>100,000 bbl
Standing STC-Resld No. 6
>100,000 bbl
0
— X
0
0
0
0
0
0
0
NO
- — -x
0
0
0
0
0
0
0
uc
0.007
6.94
0.013
2.08
2.48
0.113
0.102
CO
0
0
0
0
0
0
0
0
0
0.004
Units
1000 gal throughput
1000 gal storage capacity
Action
2
3
3
3
3
3
4-03-002-99 Standing STG-Capacity
0
0
0
0
-------
REVISED SCC LISTINGS Continued
Variable Vapor Space
4-03-003-02
4-03-003-03
4-03-003-04
4-03-003-05
4-03-003-06
4-03-003-07
4-03-003-08
4-03-003-09
4-03-003-10
4-03-003-11
4-03-003-12
4-03-003-13
4-03-003-1.4
4-03-003-15
Source
Working-Gasoline
Working-JP-4
Working-Jet Kero
Working-Dlst. No. 2
Working-Benzene
Worklng-Cyclohex
Worklng-Cyclopent
Working-Heptane
Worklng-Ilexane
Working-Isooctane
Working-Isopentane
Working-Pentune
Working-Toluene
Working-Res id No. 6
Pare.
0
0
0
0
0
0
0
0
0
0
0
0
0
0
SO
X
0
0
0
0
0
0
0
0
0
0
0
0
0
0
N0y
0
0
0
0
0
0
0
0
0
0
0
0
0
0
nc
7.7
2.3
0.025
0.022
2.1
2.3
7.2
1.4
4.0
1.7
17.8
12.0
0.62
0.0002
CO
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Unlit.
1000 gal throughput
it it
4
1
1
4
4
4
*
*
4
3
4-03-003-99
Working-Specify
0
0
0
0
-------
REVISED SCC LISTINGS Continued
Fixed Uool Breathing
(Petrochemical )
4-04-001-04
4-04-001-06
4-04-001-14
4-04-001-15
4-04-001-19
4-04-001-26
4-04-001-28
4-04-001-39
4-04-001-42
Source
Breath- Ace tone
Breath-Aery lonit rile
Breath-Carbon Tetra-
chlorlde
Breath-Chloroform
B reath- 1.2-1) Ichloro-
ethane
Breath-Ethyl acetate
Breuth-Ethylalcohol
Breath-Menthyl Alcohol
Breath-Methylene
Part.
0
0
0
0
0
0
0
0
0
SO
X
0
0
0
0
0
0
0
0
0
N0x
0
0
0
0
0
0
0
0
0
uc
43.8
21.9
62.1
76.7
31.8
30.3
10.2
13.1
113
CO
0
0
0
0
0
0
0
0
0
Units Activity
1000 gal storage capacity 5
II II II II C
II M II II lj
ii ii ii H 5
II M II II 5
II M II M Ij
II II II II Ij
II II II II C
II II II II C
4-04-001-43
4-04-001-44
4-04-001-50
4-04-001-55
4-04-001-56
4-04-001-58
Chloride
ilreath-Kethyl lithyl 000 26.6 0
Ketone
3reath-Methyl- 000 13.9 0
methacrylate
Breath-Isopropyl- 0 0 0 11.3 0
alcohol
Breath-1,1, 1 Trichloro- 0 0 0 62.1 0
ethane
Breath-Trichloroethylene 0 0 0 40.2 0
Breath-Vinyl Acetate 000 33.6 0
II II II
II II II
II II
II II II
II II
5
5
-------
REVISED SCC LISTINGS Continued
Fixed Roof Working
(Petrochemical)
4-04-005-04
4-04-005-06
4-04-005-14
4-04-005-15
4-04-005-19
4-04-005-26
4-04-005-28
4-04-005-39
4-04-005-42
4-04-005-43
4-04-005-44
4-04-005-50
4-04-005-55
4-04-005-56
4-04-005-58
Sources Part.
Working- Acetone
Working- Aery Ion It rile
Working-Carbon tetra-
chloride
Working-Chloroform
Working- 1,2-Dichloro-
ethane
Worklng-Ethlaceiate
Uorklng-Ethylalcohol
Working- Methylalcohol
Working-Methylene Chloride
Working-Methyl Ethyl
Kutoae
Wo r king-Met hylnie Lh-
acrylate
Worklng-lsopropyl Alcohol
Worklng-1, 1 , 1-Tr Ichioro-
ethane
Workiug-Trlchloroelhy leiu;
Working-Vinyl At:etat«i
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
sox
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
NO
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
lie
4.0
1.8
5.2
7.1
2.4
2.3
0.66
1.1
11.0
2.1
0.72
0.72
5.1
2.H
2.7
CO Units
0 1000 gal throughput
Q M II II
Q II II II
Q II II II
Q II II ' II
Q II II II
Q II II II
Q II II II
Q II II II
Q II II II
Q II II II
Q II II II
Q II II II
Q II II II
Q II II II
Activity
5
5
5
5
5
5
5
5
* 5
5
5
5
5
5
5
-------
REVISED SCC LISTINGS
Floating Roof
(Pet rochemi r.a
4-04-010-04
4-04-010-06
4-04-010-14
4-04-010-15
4-04-010-19
4-04-010-26
4-04-010-28
4-04-010-39
4-04-010-42
4-04-010-43
4-04-010-44
4-04-010-50
4-04-010-55
4-04-010-56
4-04-010-58
Standing
1) Source
Stand 1 ng-Acetone
Stand ing-Aery lonit rile
Standing-Carbon Tetrachloride
Stand ing-Chloroform
Standlng-1. 2-Uichloroethane
Stand ing- Ethy lace t ate
Standing-Ethyl Alcohol
Standing-Methyl Alcohol
Stand Ing-Methylene Chloride
Standing-Methyl Ethyl Ketone
St and ing-Me thy Imethacry late
Standing- Isopropyl Alcohol
Stand lng-1 , 1, 1-Trlchloroethane
Standlng-Trlchloroethylene
Standing-Vinyl Acetate
Part
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
S()x
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
NO*
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
lie
6.2
3.1
8.8
11.0
4.4
4.4
1.4
1.9
16.1
3.7
1.9
1.6
8.4
5.5
4.7
CO
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
.Units Action
1000 gal. storage capacity 5
II II II I C
II II II II «j
II II II II Ij
II II II II K
II II II II C
5
II II II 1 C
II II II II C
" ' 5
II II II II C
II II II II I.
II II II II C
II II II II fj
II II II II Ij
Variable Vapor Space (Petrochemical)
4-04-011-01 Working-Acetone
4-04-011-02 Worklng-Acrylonltrlle
4-04-011-03 Working-Carbon Tetrachloride
4-04-011-04 Working-Chloroform
4-04-011-05 Working-],2-Dtchloroelhane
4-04-011-06 Working-Kthylacetate
4-04-011-07 Working-Ethyl Alcohol
4-04-011-08 Working-Melhyl Alcohol
4-04-011-09 Working-Metl-.vlene Chloride
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
o
0
0
0
0
0
0
0
0
0
3.8
1.7
4.8
6.7
2.2
2.2
0.62
1.0
10.0
0
0
0
0
0
0
0
0
o
1000 gal.
n n
• n
n n
n n
,.
n n
n i
n n
throughput
•i
Ml
II
II
II
II
II
II
3
3
3
3
3
3
3
3
'J
-------
REVISED SCC LISTINGS
FlcaLing Roof Standing
Petrochemical (cont.)
Source
4-04-011-10
4-04-011-11
4-04-011-12
4-04-011-13
4-04-011-14
4-04-011-15
Working-Methyl Ethyl Ketone
Worklng-Methylmethacrylate
Working-Isopropyl Alcohol
Work ing-1,1,l-Trichlornethane
Worklng-Trlchloroethane
Working-Vinyl Acetate
Part
0
0
0
0
0
0
SO
0
0
0
0
0
0
NO
0
0
0
0
0
0
nc
1.9
0.68
0.68
4.8
2.6
2.5
CO
0
0
0
0
0
0
Units
1000 gal. throughput
it n
it ii
Action
3
3
3
3
3
3
-------
REVISED SCC LISTINGS
Tank Cars/Trucks -
Load ing
Source
4-06-001-01
4-06-001-02
4-06-001-03
4-06-001-04
4-06-001-05
4-06-001-06
4-06-001-25
4-06-001-26
4-06-001-27
4-06-001-28
4-06-001-29
4-06-001-30
4-06-001-50
4-06-001-51
4-06-001-52
4-06-001-53
4-06-001-54
4-06-001-55
4-06-001-75
4-06-001-76
4-06-001-77
Submerged-Normal Gasoline
Submerged-Normal Crude
Submerged-Normal JP-4
Submerged-Normal Jet Kero
Submerged-Normal IHst No. 2
Submerged-Normal Res Id No. 6
Splash-Normal Gasoline
Splash-Normal Crude
Splash-Normal JP-4
Splash-Normal Jet Kero
Splash-Normal 1)1 st No. 2
Splash-Normal Resld No. 6
Submerged-Balance CasolIne
Submerged-Da lance Crude
Suhmerged-Balance JP-4
Submerged-Balance Jet Kero
Submerged Balance Dlst No. 2
Suhmerged-Balance Resld No. 6
Splash-balance Gasoline
Splash-Balance Crude
Splash-Balance Jl'-4
Part
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
so
X
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
NO
X
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
HC
5
3
1.5
0.02
0.01
0.0001
12
7
4
0.04
0.03
0.0003
8
5
2.5
0.03
0.02
0.0002
8
5
2.5
CO
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Units Action
1000 gal. transferred 3
II II II '1
II II II 1
II II II "\
II II Ql '1
II II II •!
II II II -J
II II II •!
II II II •>
II II II 'J
II II II -j
II II II •>
II II II •>
II II II •>
II II II -J
II II II -J
II II II O
II II II "J
II II II "J
II II II 1
II II II . •>
-------
UJiVISliO SCC
Tank Cars/Trucks -
Loading (cont.)
Source
4-06-0001-78
4-06-001-79
4-06-00L-BO
Splash-Balance Jet Keru
Splash-Ualance Dist No. 2
Splash-Balance Uesld No. 6
i'art
0
0
0
sox
0
0
0
NO
X
0
0
0
0
0
0
MIL
.01
.02
.0002
0
0
0
CO
Units
Action
0
0
0
1000 gal.
n n
n n
L ransf erred
n
n
j
3
3
4-06-01)1-99 Other-Specify
Delete all other 4-06-001 Classifications
-------
KEV1SKI) SCC LISTINGS Con tinned
Marine Vessels
4-06-002-01
4-06-002-02
4-06-002-03
4-06-002-04
4-06-002-05
4-06-002-06
4-06-002-07
4-06-002-08
4-06-002-09
4-06-002-25
4-06-002-26
4-06-002-27
4-06-002-28
4-06-002-29
4-06-002- 30
Sources
Loading Clean Ships-Gasoline
Loading Dirty Ships-Gasoline
Loading Clean Bargea-
Gusol Ine
Loading Dirty Hargea-
Gaaoline
Loading General-Crude
Loading General-JP-4
Loading General-Jet Kero
Loading General-Dial. No. 2
Loading General-Resld No. 6
Tranalt Gasoline
Transit Crude
Transit- JP-4
Transit-Jet Kero
Transit-Diet. No. 2
Trans It-Reaid No. 6
Part.
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
so
- x
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
NO
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
(1C
1.3
2.5
1.2
•J.8
1.0
0.5
0.02
0.005
0.00004
3
1
0.7
0.02
0.005
0.00003
CO Units
0 1000 gal tranaferred
0 " " "
/> it it ii
/» II II II
Q II M II
,< II II II
n II II II
Q II II II
0 " "
Q II II II
r\ II II II
Q II II II
0 " " "
l\ II II II
/\ II II II
Act 1 vi ty
3
3
3
3
3
3
3
3
3
3
3
3
J
3
3
4-06-002-99
Other Spucity
0
0
0
1000 gal transferred
Delete all other 4-06-002
-------
RliVlSEI) SCC LISTINGS Continued
Underground Gasoline
Storage
/I-06-003-01
4-06-005-02
4-06-003-03
4-06-003-04
4-06-003-05
4-06-003-99
Fill Velilcle Gas Tank
4-06-004-01
4-06-004-02
4-06-004-99
Source
Splash Loading
Sub Load-Uncont.
Sub Load-Opn Sys.
Sub Load-Cls Sys.
Unloading
Specify
Vapor Dlsp. Loss
Lie]. Spill Loss
Other Speclty
Part. S0v N0v 11C
" " "" ~ J\ ^^ *\
No Change
0 0
0 0
0 0
0
0
0
9.0
0.7
CO
0
0
0
Units
1000 gallons pumped
Activity
------- |