Inventory Reference (FIRE) system of
air toxic factors, now being developed
by EIB. Please give your comments,
or requests for more information, to
Chuck Mann, phone (919) 541-4593.
STARRSS - The Emissions And
Modeling Branch of EPA's Air And
Energy Engineering Laboratory has re-
cently developed pc software to assist
state regulatory agencies and utilities in
dealing with Title IV of the Clean Air
Act, which requires the electricity
industry to curtail SO, emissions
sharply by 1995 and to make an even
more stringent reduction by 2000. The
pe program, the State Acid Rain
Research And Screening System
(STARRSS), is an integrated informa-
tion/modeling system which will help

determine the "best" strategy for com-
plying with the requirements.

Utilities must file compliance plans
with EPA and with state public utility
commissions to indicate how these
SO, reductions will be made. Various
strategies may be selected, involving
costs of compliance, alternative con-
trols, fuel switching, single vs. diverse
approaches, and other options.
STARRSS addresses these factors by
analyzing the present value of revenue
requirements over hundreds of possible
strategy combinations, and then gen-
erating a full range of costs to achieve
the reductions. No single strategy can
be considered optimal, since future
costs and other factors are uncertain.
The STARRSS approach involves

© Quiz CoRNER O

selecting a set of plans from a list of
many possible compliance strategies.
The program then offers a level of risk
associated with each, including consid-
erations for such variables as operating
conditions, future fuel prices and al-
lowance prices.

The STARRSS system is now being
used by utility commissions in
Indiana, Michigan, Mississippi, Miss-
ouri, Ohio, Pennsylvania and Wis-
consin. The system has also been
presented at recent conferences on
power generation and utilities reg-
ulation, and at EPA/DOE Clean Air
Act regulatory workshops. For further
information, contact Chris Geron,
phone (919) 541-4639. #

Congratulations for quickly solving last issue's quiz go to George Leney, head of the EI section of the Allegheny Cy.
Health Dept. in Pittsburgh. Close behind him was Daniel L. Herman, environmental analyst with the Massachusetts agency,
who used the puzzle in his CD-ROM orientation course there. Others tried, but these two got it. The answer was 1992, the
Year Of The Emission Inventory.

Now here's another challenge, this one also concocted by Keith Baugues:

QUIZ NO. 2

13 10 14 14 9 13,512 2 1110 9 8

7654 3°21

The numbers under the blanks correspond to the numbers of the clues below. Look up the emission factor in AFSEF,
either program or hard copy (EPA-450/4-90-003), for the SCC and the pollutant specified. The integer portion of the emis-
sion factor refers to the letter in the alphabet you need to place in the blank above. For example, if the emission factor were
2.6, the 2 would refer to the second letter in the alphabet, B. 1=A, 2=B, etc.

The first five people who respond with the correct answer will be lauded in the next Newsletter. Please send all responses
to Whit Joyner at the Newsletter, phone (919) 541-5493.

Clue SCC Pollutant
1 30501617 NO,
2 30101901 SO,
3 10200224 co
4 30100305 co
5 30501905 Particulate
6 20200402 NO,
7 10200707 Particulate
8 30400304 co
9 30121124 VOC
10 30101827 voc
ll 20100901 PM-10
12 30112510 VOC
13 30116702 VOC
14 30102729 Particulate

e £2) 3] e £5) ® e (3) 9)

S


helpful to States still having mobile
source data in some other type of
spreadsheet format. An available Lotus
2.0 import option, either automatic or
manual, can be used to reformat the
data. This option has already proved
quite successful, and it is now
available, with a user's guide, on the
CHIEF bulletin board. Look for it
under "Utility Programs", named
VMT_EF.WK1. For more informa-
tion, contact Lee Gabele at the News-
letter, phone (919) 541-5292.

ROTATION TO NEW ASSIGN-
MENTS is on schedule in the Inven-
tory Guidance And Evaluation Section
of EIB. In mid-January, David Misen-
heimer became Acting Chief of the
section, a position he will hold while
Marty Martinez goes on an inter-
national detail to the Secretaria
Desarallo Social (SEDESOL), the
Mexican environmental agency. Marty
will handle that assignment for about
six months, beginning in March, He
will advise the Mexican agency on

NEW ON THE CHIEF BULLETIN BOARD:

Bulletin Board log-ins since the last
Newsletter exceeded 4500, and we're
glad to know that so many people are
making use of the BB. We are making
more access lines available for you.
Remember, when checking the list of
current Alerts, to look at old Alerts to
make sure you're up to date. Alerts
will stay current for at least a month
before they are moved to the "old" list.
We are planning some changes to the
BB's main menu which will make it
easier to use. Write, phone or E-mail
your comments, questions or suggest-
ions you have to Michael Hamlin,
bulletin board System Operator, here at
the Newsletter.

The 1992 version of XATEF, the
Crosswalk/Air Toxic Emission Factor
Data Base Management System, has
taken over as the most popular data
base downloaded from The CHIEF BB.
More than 1800 citations and emission
factors have been added to XATEF this
year, the majority of which come from
the California Hot Spots Inventory
Pooled Source Test Data. 1992 is the
end of the line for XATEF. It served
us well, but soon it will be replaced by

FIRE, the Factor Information Reposi-
tory System, which will contain rated
toxic and criteria emission factors.
NEW AP-42 DRAFTS — Drafts of
a number of new AP-42 sections are
now on the BB, including several from
Chap. 2, Solid Waste Disposal; and
Chap. 5, Chemical Process Industry.
More are being added. Please comment
on this new material, by BB E-mail or
however you wish,

TANKS — EIB's newest emission
estimation tool, the TANKS pc
program, can be copied from The
CHIEF BB. This menu driven
program contains the newly revised
storage tank equations contained in the
new Chapter 12 to AP-42. The system
calculates monthly and annual VOC
and toxic air emissions, for horizontal
and vertical fixed roof tanks, internal
and external floating roof tanks, and
underground tanks, incorporating the
latest American Petroleum Institute
equations. TANKS can produce either
summary, detailed, or fully detailed
reports. The user's manual for the
system is also on CHIEF, TANKS
requires 3 MB of hard disk space to

THE JOINT EMISSION INVENTORY OVERSIGHT GROUP:
JEIOG Research In Progress

AIR TOXIC DATA BASE
MANAGEMENT - The JEIOG air toxics
subcommittee wants to identify state
and local toxic emission inventory
needs in a computerized data base
management system. Options being
considered include support for a relat-
ional data base management system in

a client/server UNIX environment, in a
stand alone pc system, and in a pc
system that could function as a front
end for a client/server data base or in
AIRS. The subcommittee would like
to talk with possible users of such a
system. To begin this discussion, a pe
prototype air toxic inventory system

4

emission inventory methods and on the
U. S. experience with conventional and
greenhouse gasses and their relation-
ship to air emissions. He will also
advise on matters such as the ozone
problem in Mexico City and U.
S./Mexico border issues. Marty is one
of five EPA people in the newly
organized EPA/SEDESOL technical
personnel exchange program. #

operate. For more information, contact
Info CHIEF at phone (919) 541-5285.
LOCATING & ESTIMATING...
DOCUMENTS — The BB now has
the draft L&E document on Mercury,
and the final for Methylene Chloride
will be on in March.

INTERIM SPECIATE — The
1992 version of the VOC/PM
Speciation Data Base Management
System (SPECIATE) is available from
The CHIEF BB. This SPECIATE has
new species profiles developed by the
Office Of Mobile Sources for auto-
mobile exhaust and evaporative emis-
sions. These profiles were produced
with data from EPA, the California Air
Resources Board, and AUTO/OIL.
ORDERING MODULE FOR
DOCUMENTS — Remember the BB
module for quick ordering of any of the
Locating And Estimating series on tox-
ic substances. To reach the module, go
to the main menu and select Order Doc-
uments. Your requests will then go
directly to our library services people
for distribution to you. For assistance
or more information, call the Info
CHIEF, phone (919) 541-5285,

has been developed which can perform
basic data entry and report output
functions for both point and area
sources. The prototype does not
interface with other emission
estimation models for emission
calculation purposes, but we hope to
develop an interface with the Factor


HEADQUARTERS INVENTORY CONTACTS

January 1993
— EMISSION FACTORS —
AP-42. Chapter Contact
1. External Combustion Joe McSorley
2. Solid Waste Disposal Ron Myers
3. Internal Combustion Michael Hamlin
4, Evaporation Loss Sources Ron Ryan
5. Chemical Process Industry
Organics Dennis Beauregard
Inorganics Ron Myers
6. Food And Agricultural Industry Dallas Safriet
7. Metallurgical Industry Dennis Shipman
8. Mineral Products Industry Ron Myers
9. Petroleum Industry Ron Ryan
10. Wood Products Industry Dallas Safriet
11. Miscellaneous Sources Dennis Shipman
12. Storage Of Organic Liquids Anne Pope
Other = Toxics Anne Pope
Lead Dennis Shipman/Ron Myers

General information, Newsletter,
Bulletin Board, XATEF, SPECIATE,
Air CHIEF CD, Publications

— EMISSION INVENTORIES —

1990 03/CO SIP Inventory Status
Inventory Guidance

PM-10, Lead

oOyco
AIRS/AFS Emissions Data Quarterly Report
AIRS Area And Mobile Subsystem (AMS)
AIRS Facility Subsystem (AFS)
Biogenic Inventories
Emission Statements
Mobile Sources
Modeling-related Inventories
PM-10/Lead
Quality Assurance
Tracking Reasonable Further Progress
SIP Air Management System (SAMS)
Toxics Inventories
Emission Trends
Other

— PM-10 SIPS —
OAQPS/AQMD
OAQPS/SSCD
—OyICO SIPS —
OAQPS/AQMD
OAQPS/SSCD
Office Of Mobile Sources
—LEAD SIPS —

OAQPS/AQMD.

Info CHIEF

Sharon Nizich

Bill Kuykendal

David Misenheimer

Lee Gabele

Lee Gabele

David Misenheimer
Steve Bromberg,

Mary Ann Warner-Selph
Mary Ann Warner-Selph
Mary Ann Warner-Selph
Bill Kuykendal

Sharon Nizich

Mary Ann Warner-Selph
David Misenheimer
Anne Pope

David Misenheimer
David Misenheimer

Larry Wallace
Chris Oh

Laurel Schultz,
Vishnu Katari
Mark Wolcott

Tom Pace

Telephone

(919) 541-
4796
5407
5232
4330

5512
5407
5371
5477
5407
4330
5371
5477
5373
5373
5477/5407

5285

2825

5372
5473
5292
5292
5473
1000
1192
1192
1192
5372
2825
1192
5473
5373
5473
5473

0906
(202) 308-8732

5511
(202) 308-8717
(313) 668-4219

5634


United States Office Of Air Quality EPA-454/N-93-003
Environmental Protection Planning And Standards Volume IV, No. 2
Agency Research Triangle Park, NC_27711 January 1993

SEPA - THE CHIEF NEWSLETTER

— THE CLEARINGHOUSE FOR INVENTORIES AND EMISSION FACTORS —

Cr ry

AP-42 SUPPLEMENT E IS NOW AVAILABLE!

Ce

Supplement E to the AP-42 stationary source volume (Volume 1) has been received from the Government Printing
Office, stock no. 055-000-00422-6, price $17.00. This supplement contains new or revised emission factor information
involving Anthracite Coal Combustion; Natural Gas Combustion; Liquified Petroleum Gas Combustion; Wood Waste
Combustion In Boilers; Bagasse Combustion In Sugar Mills; Residential Fireplaces; Residential Wood Stoves; Waste Oil
Combustion; Automobile Body Incineration; Conical Burners; Open Burning; Stationary Gas Turbines For Electricity
Generation; Heavy Duty Natural Gas Fired Pipeline Compressor Engines; Gasoline And Diesel Industrial Engines; Large
Stationary Diesel And All Stationary Dual Fuel Engines; Soap And Detergents; and Storage Of Organic Liquids.

Copies of Supplement E are available for reference at the Library Of Congress, all U. S. Government Depository
Libraries, and the library system of the Environmental Protection Agency (EPA). A courtesy distribution is being made to
each EPA Regional Office and to each member agency of the State And Territorial Air Pollution Program Administrators and
the Association Of Local Air Pollution Control Officials. Others must purchase copies from the Government Printing
Office. For details on how to obtain the entire AP-42 series, call the Info CHIEF, phone (919) 541-5285. #>

THE NEW NATIONAL EMISSION ESTIMATES — - -

The latest annual report on criteria
pollutant emission trends, National Air
Pollutant Emission Estimates, 1900 -
1991, EPA-454/R-92-013, has been
printed and is now available. This
report presents EPA's latest estimates
of national and regional emissions
since 1900, with increasing detail on
emission levels in the later years.

National emissions are estimated
annually by EPA, based on statistical
information about each source
category, emission factor, and control
device efficiency. The estimates are
made for over 450 individual source
categories, including nearly all major
sources of anthropogenic emissions.

Estimates for individual source cate-
gories are aggregated to show the
emission trends at national and regional
levels and by major source category. It
is important to note that these trends
estimates are for comparative purposes,
and using the estimates as absolute
values for any given year should be
done with caution.

New items in this latest report
include information on: the top 50
operating point sources of CO, NO),
SO, and VOC; biogenic emissions;
historic emission trends since 1900;
and an improved method for calculating
emissions from both highway vehicles
and electric utilities. Also, beginning

with this report, PM-10 point and
fugitive process sources will be
combined with the PM-10 fugitive dust
emissions. For more information,
contact the Info CHIEF at the
Newsletter, phone (919) 541-5285.
Copies of this document are avail-
able free of charge to current federal
employees, contractors and grantees,
and to nonprofit organizations - as
supplies permit — from the Library
Services Office (MD 35), US EPA,
Research Triangle Park, NC 27711, or,
for a fee, from the National Technical
Information Service, 5285 Port Royal
Road, Springfield, VA 22161. #&

NIN
0} Sy,

Ry
S
K Q
u K

SPAN o

1993 IS THE YEAR OF EMISSION INVENTORY
REVIEW & IMPROVEMENT!

FINAL EMISSION INVENTORIES FOR O3/CO NONATTAINMENT AREAS

WERE DUE TO EPA BY 11/15/92.

&

Recycled/Recyclable
Printed with Soy/Canola ink on paper that
contains at least 50% recycled fiber

NIV

9 NAV


9% — ALL O3/CO INVENTORY PREPARATION PLANS (IPP) ARE NOW APPROVED - The 45 final IPPs,
involving 43 States, have been received, reviewed and approved. EIB will continue to work with the Regions on how to deal
with any problems. For more information, contact Lee Gabele at the Newsletter, phone (919) 541-5292.

9 — NATIONAL STORM WATER HOT LINE - For those experiencing problems in evaluating the pollution aspects of
storm water and downpour runoff, help is available at (703) 821-4823.

% — U.S. CODE AVAILABLE ON COMPACT DISC - A great bargain from the federal government — the entire
30,000 pages of the U. S. Code, comprising all federal laws in force as of 2 January 1991, can now be obtained now on one
CD-ROM for only $30.00. In paper copy, the Code is 23 volumes long, @ $800. The CD has many user help features. It
requires a pc compatible machine w/ 2 MB RAM and DOS 2.0 or Windows 2.0 or higher. A Macintosh version is planned
within about a year. For more details, contact Elliot Chabot, House Information Systems, U. S. House Of Representatives,
phone (202) 226-6456. The CD is sold by the Government Printing Office, Box 371954, Pittsburgh, PA 15250-7954,
Stock No. 052-001-00439-6.

9 — COMPACT DISC FEDERAL REGISTER® - The complete Federal Register, updated weekly, is available on CD-
ROM, including text, tables, illustrations, and search capability by key word, agency, date and other tags. A subscription
comes with toll-free phone support, and only two discs are required for every year of the FR. For details, or a floppy sample,
contact Counterpoint Publishing, Box 928, Cambridge, MA 02140, phone (800) 998-4515. #

UPCOMING MEETINGS AND CONFERENCES

— Call For Papers, AWMA Specialty Conference, “The Emission Inventory: Perception And Reality", 18-20 October 1993, Pasadena, CA
Abstracts are due 15 Mar. Contact Patricia Velasco, CA Air Resources Board, Box 2815, Sacraments, CA 95812, or Kathy Hsiao, South
Coast AQMD, 21865 E. Copley, Diamond Bar, CA 91765

— Papers for the 86th Annual Meeting of AWMA, 13-18 June 1993, Denver, CO. Final papers are due19 April. Contact Lisa Bradley, AWMA,
Box 2861, Pittsburgh, PA 15230, phone (412) 232-3444.

— Waste Combustion In Boilers And Industrial Furnaces, 2-4 March 1993, Clearwater, FL, Contact Marci Mazzei, AWMA, Box 2861,
Pittsburgh, PA 15230, phone (412) 232-3444.

— Pollution Prevention, Reuse, Recycling And Environment Efficiency - AWMA specialty conference, 20-22 April 1993, Durham, NC, Contact
Gretchen Watson, AWMA, Box 2861, Pittsburgh, PA 15230, phone (412) 232-3444.

— Measurement Of Toxic And Related Air Pollutants - AWMA/EPA specialty conference, 3-7 May 1993, Durham, NC, Contact Gretchen
Watson, AWMA, Box 2861, Pittsburgh, PA 15230, phone (412) 232-3444. #

THE CHIEF NEWSLETTER is produced quarterly by the Emission Inventory
Branch, Technical Support Division, of EPA's Office Of Air Quality Planning And
Standards. Its purpose is to enhance communication within the emission factor and
inventory community by providing new and useful information and by allowing for the
exchange of information between and among its readers. Comments on the Newsletter
and articles for inclusion in it are welcome and should be directed to Whitmel M. Joyner,
Editor, Emission Inventory Branch (MD 14), US EPA, Research Triangle Park, NC
27711; commercial phone (919) 541-5493.

The contents of THE CHIEF NEWSLETTER do not necessarily reflect the views and
policies of the Agency, neither does the mention of trade names or commercial products
constitute endorsement or recommendation for use. 4 # @o fo o fy &o



By J. David Mobley
Emission Inventory Branch Chief

"EMISSION INVENTORIES — PROG-
RESS AND ISSUES", the second annual
EPA/AWMA Specialty Conference
held last October in Durham, NC, was
a tremendous success from many
different aspects. The 400 or so atten-
dees, a sizeable increase from last year,
constituted a good cross section of the
emission inventory community: fed-
eral, state and local agencies; industry,
consultants, academia, and foreign
governments.

The conference addressed the key
issues of emission inventory work,
such as agency and industry experiences
in developing SIPs, data base manage-
ment, mobile sources, biogenics, mod-
eling, and air toxics. On the first day
of the event, Jim Southerland and Anne
Pope of EIB offered five training
courses on emission estimation tech-
niques and tools for industry. These
courses were sold out, suggesting that
there is a need for, and application of,
emission inventory products in the user
community. The keynote talks by Bill
Laxton (OAQPS's Technical Support

Division Director) and Bob Collom
(GA) underscored well the importance
of the emission inventory in air pro-
grams. The entire conference facilitated
active communication among attend-
ees, in meetings and in the hallways.
Also, the exhibits and poster sessions
drew much interest, especially to the
Air CHIEF CD-ROM and other
electronic data bases. As with most
such conferences, the informal ex-
changes among attendees were as val-
uable as the formal sessions, certainly
the barbecue social one evening. From
EIB's standpoint, we made good use of
this opportunity to coordinate with
Region and State contacts on SIP
emission inventory submissions and to
talk with industry representatives on
factor development and field testing.

The panel discussion at the close of
the conference, "Future Directions In
Emission Inventories", proved to be an
effective way to recap highlights of the
meeting and to consider future devel-
opments.

In my view, the most important
conclusions from this meeting are:
1. Emission inventories continue to

ON FUGITIVE DUST SOURCES:

SURFACE COAL EMISSION FACTOR
IMPROVEMENT — The Clean Air Act
of 1990 required that EPA study the
emission factors and ambient air
quality prediction models use to assess
surface coal mining activity, to assure
that they did not significantly over-
predict emissions and subsequent air

. quality. To accomplish this, we have a
‘s two phase study in place. The first is

“3a emission testing to evaluate and

+g, Validate or revise the existing emission

xa factors for the most important sources,

The second phase of the program is a
model validation study.

© * During the fall of 1992, we tested

for PM-10 and Total Particulate from
coal and overburden haul trucks and
roads at a large Wyoming surface coal
mine. This testing covered a variety of
moisture conditions and road surfaces.
Also, ambient PM-10 monitoring was
conducted for use in the model
validation phase of the study, which
will begin in the spring of 1993.
CRUSHED STONE PROCESSING —
The Emission Inventory Branch (EIB)
has completed emission testing for
PM-10 from tertiary crushers and
screens at 3 granite quarries, and factors
for these sources should be calculated
and reviewed in the near future. This

REFLECTIONS ON THE SPECIALTY CONFERENCE

grow in importance, as evidenced by
control strategy applications for O3/
CO/PM-10; emission trading for SO,/
VOC/NO,; permit fees; and air toxic
assessments.

2. Technology is advancing at a rapid
rate, both in hardware and software,
with ominous implications for how
and when emission inventories will be
compiled in the future. It will be a
major challenge to keep pace with
these developments.

3. Data Quality is not currently
adequate, and while we are steadily
improving this situation, expectations
and demands for quality emission data
continue to increase rapidly.

I's clear that EIB has an important
mission. Many challenges remain.
We hope that our capability to
accomplish this mission increases
along with your expectations for
quality products from us.

All in all, the conference seems to
have been a thorough success, and EIB
and AWMA are looking forward to
next year's meeting in California. (See
Upcoming Meetings below.) 4

work has been a cooperative effort with
the National Stone Association, which
has been most helpful by making
arrangements with quarry operators and
by contributing to the cost of the
testing program. During 1993, we
plan to conduct emission tests for PM-
10 from tertiary crushers and screens at
limestone quarries. We will be doing
this in part to determine if emission
factors already developed for granite
would also be appropriate for lime-
stone. For more information on these
topics, contact Dennis Shipman at the
Newsletter, phone (919) 541-5477, 4

— — FROM THE CHIEF'S CORNER — —

1992 was a busy and productive year.
We worked very hard here, toward more
goals than we had time and resources to

5 “% achieve, and we have reached a major

portion of them. The 282-page
Supplement E of AP-42 is now avail-

able, with new assessments of 17
source categories, including an extens-
ively revised 122-page section on stor-
age tanks. We also have, in draft form,
about a dozen new toxics Locating And
Estimating documents, and everyone

2

on our mail key will be notified when
they're ready. Many of the tools in our
“tool kit" have been updated, such as
the Air CHIEF CD-ROM, XATEF,
and SPECIATE, and we've provided the
popular new program, TANKS, which


reflects the new information in AP-42
and allows users to calculate losses
from organic liquid storage. Lastly,
but not least, we helped put on the
successful AWMA emission inventory
specialty conference in Durham in Oct-
ober. There are other pieces of news,
which are elsewhere in this issue.

Our efforts continue on the cover-to-
cover enhancement of AP-42. The
contents of Supplement F are begin-
ning to take shape, and it'll be larger
than E. We hope to have it available
by this June. Our search for new emis-
sion factor data has produced
considerable information on some
sources and none on others. We are
stressing work on the background

reports for new sections, should the
user need to know more about how
factors are derived and quality rated.
Some older factors may be downrated,
as we apply firmer and more consistent
standards to them, resulting in the
occasional factor getting a lower rating
than before but having a stronger
reliability. For such situations, we've
coined the doublespeak motto, "Even
though it's worse, it's actually better"!
Sad to say, we're having to deal in
all of this with a nearly 60% budget
cut in FY 93 funding, so our testing
program will be somewhat reduced and
some of our work on VOC, PM-10 and
toxics will be impinged. We can hope
for money restoration, but meanwhile,

our priorities are to finish the major
projects already under way and to try to
find ways to “expand” the money
through cooperative projects with
others,

Remember, we like to hear from our
readers. Tell us what you need and
what you think we need to hear. The
emission factor community is a size-
able group, and each one of us may
know something that could help many
others. This Newsletter now goes to
more than 4500 addressees in 49
countries (who'll make it 50?), and we
want it to be a vehicle for communica-
ting this sort of knowledge.

Jim Southerland

Chief, Emission Factor & Methodologies Section

EMISSION INVENTORY ACTIVITIES:

AN "INTENSIFIED EFFORTS"
TASK FORCE was created in October
to assist States with their final Emis-
sion Inventory submissions. Major
efforts have been under way since then
to help States in overcoming AIRS
data entry problems and in organizing
area data. Priority has been given to
the serious nonattainment areas. The
goal of the Task Force was to obtain as
many complete inventories by the 15
November deadline as possible. The
itensified effort continues in some areas
through January 1993. For more
information on the Task Force or the
above tabulation, contact Sharon
Nizich at the Newsletter, phone (919)
541-2825.

GUIDANCE ON PROCESSING
FINAL INVENTORY SUBMIS-
SIONS has been issued by EIB and the
Air Quality Maintenance Division
(AQMD) to deal with the failure of
some States to submit all elements of
an inventory. We have identified five
components necessary in an inventory:
point source data, arca source data,
mobile source data, biogenic emissions
data, and documentation for all of
them. (See Table above.) Although it
is not required that these data also be in
AIRS for an inventory to be considered
properly submitted, the data must be
there before an inventory can be
approved. The guidance memo also
informed the Regional Offices of these

requirements, and it detailed the
respective responsibilities for review of
the inventories by the Regions, the
Office Of Air Quality Planning And
Standards (OAQPS), and the Office Of
Mobile Sources (OMS). For more
information, contact Bill Kuykendal at
the Newsletter, phone (919) 541-5372.

SIP EMISSION INVENTORY
FINDINGS LETTERS were issued by
the EPA Regional Offices on January
15 to certain States for failing to sub-
mit State Implementation Plan (SIP)
elements that were required by Novem-
ber 15, 1992. Of the 17 elements
required by the November date, three
involved emission inventories: Ozone
(Os) SIP inventories for 1990, Carbon
Monoxide (CO) SIP inventories for
1990, and Emission Statement rules.

Findings of failure to submit Ozone
inventories were issued to Delaware,
Maryland, Utah and Arizona, Findings
of failure to submit CO inventories
were issued to Connecticut, Maryland,
Utah, Arizona and Alaska. Fifteen
states received findings for failure to
submit Emission Statement rules.

The SIP clements submitted to EPA
will move on to the next step of deter-
mination of "approvability". As re-
quired by the Clean Air Act, EIB and
the Regional Offices will review the
base year 1990 inventory submissions
to determine if they are "complete,

3

comprehensive, and accurate". Emis-
sion Statement rules will also be re-
viewed to sec if they meet the
requirements of the Act. For more
information, contact David Misen-
heimer at the Newsletter, phone (919)
541-5473.

ASSISTANCE ON ENTERING
MOBILE SOURCE DATA INTO
AIRS/AMS has been given by EIB
to the States regarding highway and
nonroad mobile sources. Through
EIB's Direct Assistance contract, the
nonroad mobile source inventories
which OMS developed for 33 03/CO.
Nonattainment Areas were transformed
into batch transactions and loaded onto
AMS in December. This work was co-
ordinated with the Regions and the
National Air Data Branch. To create
nonroad inventories for the remaining
nonattainment areas, EIB will be ad-
justing the existing nonroad inven-
tories by a methodology recommended
by OMS, a ratio by human population.
These adjusted inventories will like-
wise be placed in AMS in batch
transaction, with the concurrence of the
involved States.

To aid further in getting highway
mobile source inventories into AMS,
we have designed a spreadsheet which
will reformat data into the AMS
transaction file format. This will be