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United States Office Of Air Quality EPA-454/N-96-003

Environmental Protection Planning And Standards Volume VII, No. 3

Agency Research Triangle Park, NC 27711 Summer 1996

THE CHIEF N E W S L E T T E R

— THE CLEARINGHOUSE FOR INVENTORIES AND EMISSION FACTORS —

Table of Contents

(click on title)

Emission Inventory Conference To Be Held In New Orleans . . . . . . . . . 1

Emission Factors and Inventories Featured

 at A&WMA's Annual Meeting in Nashville . . . . . . . . . . . . . . . . . . . . . . . 2

AP-42 Supplement B Sections Available! . . . . . . . . . . . . . . . . . . . . . . . . . 3

EFIG Hangs Ten on the 'Net! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

CHIEF on the New TTN BBSWeb Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

EFIG Staff Receive Award From A&WMA . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1996 Periodic Emission Inventory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1990 O3/CO SIP Emission Inventories on CD-ROM . . . . . . . . . . . . . . . . . 6

Emission Inventory Improvement Program (EIIP) . . . . . . . . . . . . . . . . . . 6

Info CHIEF's Most Frequently Asked Questions . . . . . . . . . . . . . . . . . . . . 7

EFIG Compiles the National Air Toxic Inventory . . . . . . . . . . . . . . . . . . . . 8

EFIG Projects on the Horizon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

OTAG Emission Inventory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

National Emission Trends CD-ROM Viewer . . . . . . . . . . . . . . . . . . . . . . . .10

PAMS Could Benefit Emission Inventories . . . . . . . . . . . . . . . . . . . . . . . . 10
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— Course Information —

In conjunction with the conference, the Air &

Waste Management Association is offering four

leading-edge continuing education courses on

Tuesday, September 3, 1996. The courses have

been chosen for their timeliness, content, instructors and relevance to the needs of today’s environmental professional.

AIR-151: Introduction to Emission Inventory

 Concepts (half day course)

AIR-152: Overview of EPA Air Emission Tools

 (one-day course)

 AIR-153: Estimating VOC Emissions from

 Petroleum Industry Sources (one-

 day course)

 AIR-154: Estimating Evaporative Emissions

 from Storage Tanks (one-day course)

— Session topics —

Implementing Federal & State Legislation

Role of Inventories in Permits

Collecting & Managing Emission Data

Preparation of Industrial Emission Factors &

Estimates

Electronic Data Processing & Computerized Tools

Motor Vehicle Emissions

Tools for Use in Emission Inventory Development

International Emissions Programs

Air Toxics

Air Quality Modeling Emission Inventories

(Cont. on p. 3)

Mississippi Riverboat Dinner/Jazz Cruise

A special optional event has been planned for Thursday evening, September 5. Come aboard for a

share of history and heritage on a Mississippi River excursion right to the heart of the signature culture and

lifestyle of New Orleans and Louisiana. Buses will depart from the hotel at 6:00 pm for cruising from 7:00-

9:00 pm. The cost for this unique event is $35 per person and includes riverboat cruise, creole-style

dinner, jazz music and transportation to and from the hotel.

Conference & Course Registration

Full registration to the conference includes admission to the technical sessions,

the exhibition, two lunches, the Wednesday

evening reception, refreshment breaks and a

copy of the conference proceedings. Oneday continuing education course registration

includes a course manual, lunch and refreshment breaks. Half-day course registration includes a course manual and morning refreshments. Discounted advance registration fees

are available to registrations (and fees) received

before August 12, 1996. Information and registration forms can be obtained from the

A&WMA Registrar at (412) 232-3445 or (412)

232-3444, extension 3142.

Hotel Information

The conference will be held at the

DoubleTree Hotel, 300 Canal Street, New Orleans, LA 70130. Make reservations directly

with the hotel by calling (504) 581-1300. Single

and double occupancy is $95, plus applicable

taxes. A limited number of rooms are available at the government rate. The conference

rate is available three days before and three

days after the conference. To ensure availability and rate, make your reservations before

August 12, 1996. After that date, the reserved

hotel block will be released for general sale.

Be sure to mention the A&WMA Emission Inventory conference to receive the reduced rate.

Emission Inventory Conference To Be Held In New Orleans

by Bill Palermo, Louisiana Section of the A&WMA

The Emission Inventory: Key to Planning, Permits, Compliance & Reporting to be held September 4-

6, 1996 in New Orleans, Louisiana is the sixth in a new series of Emission Inventory specialty conferences

that are targeted toward those who prepare emission estimates for facilities or other affected operations.

The conference is sponsored jointly by the U.S. Environmental Protection Agency (EPA) and the Air &

Waste Management Association (A&WMA). It will be of value to agency personnel responsible for reviewing facility inventories and will also be a useful forum for the exchange of ideas and information on the use

of emission data between EPA, state/local agencies, industry, and the public.
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New Orleans (Cont. from p. 2)

New Orleans Attractions

New Orleans is an internationally recognized top convention and tourist destination offering some of the world’s finest cuisine and restaurants. It has nationally recognized tourist attractions such as the zoo and Aquarium of the Americas, jazz, cajun and blues clubs, the historic French Quarter and a history rich

with multi-cultural influences. For international visitors, Louisiana offers tax free

shopping. New Orleans is also a port for cruise lines offering Caribbean cruises,

normally with Saturday departures. Information about New Orleans found on the

Internet at http://www.nawlins.com. Take advantage of the availability of the

special hotel rate before or after the conference to fully enjoy the culture and

ambience of the city of New Orleans.

Emission Factors and Inventories Featured

 at A&WMA's Annual Meeting in Nashville

by Bill Barnard, E. H. Pechan and Associates, Inc.

The Air & Waste Management Association's (A&WMA) 89th Annual Meeting & Exhibition was held in

Nashville, Tennessee on June 24-28th. Sessions relevant to emission factors and inventories included

information about VOC and Hazardous Emissions Controls, Control of Toxic Particulates, Biological Treatment of Gaseous Emissions, Fugitive Emissions from Contaminated Water and Surface Soils, Emission

Factors from Defense Operations, PM-10 (and Smaller) Emission Factors and Inventories, Innovative

Emission Estimation from Stationary Sources, and Air Emissions—Characterization at Chemical and

Petroleum Sources.

The session on PM-10 (and Smaller) Emission Factors and Inventories was particularly well attended. The session was held over two days and included a total of 13 papers related to various aspects

of PM-10 emissions. Several paper presentations addressed innovative methods for controlling or assessing controls on fugitive dust sources. These papers included assessments of street sweeping of

blowsand in the western U.S., increasing the control efficiency of sweeping operations following road

sanding and salting operations by using magnesium chloride as a de-icing/binding agent on paved roads,

and an assessment of the emissions from paved and unpaved roads, including the first evaluation of

emissions from unpaved shoulders next to paved roadways. Innovative controls of windblown dust areas

in the western U.S. were presented along with new information concerning the PM-2.5/PM-10 ratio for

various fugitive dust sources.

Reprints of all papers presented at the A&WMA annual meeting are available from A&WMA, and for

the first time ever, the entire set of reprints can be obtained on CD-ROM. For more information, call the Air

& Waste Management Association at (412) 232-3444, extension 3142.

AP-42 Supplement B Sections Available!

EFIG now has AP-42 Supplement B sections available on the CHIEF BBS and Fax CHIEF.

New, complete Supplement B sections that are currently available include: 9.7—Cotton Ginning;

11.7—Ceramic Clay Manufacturing; and 12.20—Electroplating. Sections 9.12.1—Malt Beverages and 11.23—Taconite Ore Manufacturing are expected to be available in August. These

sections can be found under the "Supplement A & B to 5th Edition" menu item under the "AP-42"

menu item on the CHIEF BBS. Also look for a new draft section on Wood Preserving under the

"Draft Sections Under Review" menu item. If you have questions, call Info CHIEF, (919) 541-5285.
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EFIG Hangs Ten

on the 'Net!on the 'Net!

The Emission Factor and Inventory Group (EFIG) has joined the revolution of the Information Age

and is making waves on the Internet World Wide Web! EFIG now has several web pages to make access

to our publications and software faster and easier. Many of you may already be reading this newsletter

online from our CHIEF Newsletter web page, (http://www.epa.gov/oar/oaqps/efig/chiefnl.html) and we

hope that more Internet users will discover this convenient way to stay abreast of emission factor and

inventory news. Here is a brief overview of what we have available so far.

Emission Estimation Tools Page

The EFIG Emission Estimation Tools Page gives an overview of tools that EFIG provides to the

public for estimating air emissions from stationary sources. This page includes links to the Factor Information Retrieval (FIRE) database, which contains emission factor and Source Classification Code (SCC)

information, and the TANKS database, a calculation program for estimating volatile organic compound

(VOC) emissions from storage tanks. There is also a link to the CHIEF Newsletter and will soon be a link

to the Compilation of Air Pollutant Emission Factors (AP-42) document. The Emission Estimation Tools

Page can be found at http://www.epa.gov/oar/oaqps/efig/tools.html.

National Air Pollutant Emission Trends Report Page

One of EFIG's most popular documents, The National Air Pollutant Emission Trends, 1900-1994,

is now available in its entirety on the web. This document primarily summarizes national data concerning

criteria air pollutants (NOx, SOx, VOC, particulate matter, and CO) and also gives information about nonattainment areas, air toxics, and CORINAIR (European atmospheric inventory). The National Air Pollutant

Emission Trends report can be found at http://www.epa.gov/oar/emtrnd94/emtrnd94.html.

The Ultimate Truth Web Page

The Ozone Transport Assessment Group (OTAG) has compiled an emission inventory database

consisting of data submitted by state agencies, which offers complete VOC, NOx, and CO county level

inventory for each state in the United States. This database is called "TuT", or The Ultimate Truth, and is

broken into two parts, the Point Source File and the Area/Mobile Source file. If you are interested in

obtaining this information, go to http://www.epa.gov/tut/index.html.

The EIIP Web Page

The Emission Inventory Improvement Program (EIIP) is a jointly sponsored effort of STAPPA/

ALAPCO (state and local agency associations) and EPA, and is an outgrowth of the Standing Air Emissions Work Group (SAEWG). The EIIP Steering Committee and technical committees are composed of

state, local, and EPA representatives. EFIG is currently working on a web page that will give information

about this program and provide links to EIIP documents. Stay tuned to the EFIG web pages and the CHIEF

BBS to find out more!

We realize that there are currently a lot of addresses to remember to get to all the EFIG web pages.

We are working to link all of this information (including a link to the TTN BBSWeb—see next page) to a

single EFIG home page, which will make finding information about emission inventories and factors much

easier on the Internet.
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The CHIEF BBS, as part of the OAQPS TTN, has a new address! We are pleased to announce the

opening of an Internet World Wide Web (WWW) site on Monday, July 15th. The web site is the final piece

of a whole new information system — TTN2000. TTN2000 consists of three main services: the TTN BBS,

the TTN FTP site, and the new TTN2000 web site. From the user’s viewpoint, this means that users can

now access the TTN by FTP, through the World Wide Web, or as the bulletin board that has been available

for years now. Each component of the TTN2000 system is tied to a central filebase,

so you can be assured of getting the same files, regardless of how you access

us. We have recreated the TTN BBS in the WWW medium as the “TTN

BBSWeb”. You will instantly recognize the structure of the current BBS, but

with “point and click” menus and download areas.

The TTN2000 web site is online at http://ttnwww.rtpnc.epa.gov, except during the maintenance period (Mondays, 8:00 am to 12:00 pm EST).

Please contact the TTN help desk at (919) 541-5384 if you have questions or

comments.

CHIEF on the New TTN BBSWeb Site

1996 Periodic Emission Inventory

by Bill Kuykendal, EFIG

The 1990 Clean Air Act Amendments established the requirement for periodic emission inventories

for ozone and carbon monoxide nonattainment areas. The next of these periodic inventories are due for

1996. The Emission Factor and Inventory Group (EFIG), in cooperation with the EPA Regional Offices, is

developing guidance material that will detail specific requirements for these inventories. A key item under

development is an Action Plan which will detail schedules and responsibilities for the various parties to

ensure a smooth process in the submission and review of these inventories and accompanying data. EPA

plans to use the data collected to update information in the National Emission Trends database. States will

be encouraged to report statewide emissions data where available in addition to the required reporting for

nonattainment areas. These inventories will offer the first opportunity to apply the emission inventory

procedures developed under the Emission Inventory Improvement Program (EIIP).

EFIG Staff Receive Award From A&WMA

by Tom Pace, EFIG

Please join us in congratulating both Jim Southerland and Tom Pace, who were recently named

Fellow Members at the Air & Waste Management Association's (A&WMA) Annual Meeting in Nashville in

June.

Tom has been with EFIG since September, 1994 and works on a variety of emission factor and

inventory projects. Prior to joining EFIG, Tom initiated and managed the Russia Air Management Program

(RAMP), Office of Air Quality Planning and Standards’ (OAQPS) assistance program to help Russia

improve its air management approach and capabilities. Tom has been in OAQPS for 22 years and has

spent most of his time working on technical and implementation aspects of particulate matter.

Jim retired from EPA in Spring 1996. He spent 29 years in Federal Service and joined EPA when it

was formed in 1970. He is currently with the Air Quality Division of the North Carolina Department of

Environmental Health and Natural Resources in Raleigh, NC. After several field assignments, Jim began

working on the Compilation of Air Pollutant Emission Factors, AP-42 and is generally regarded as the

“godfather” of that document. His most recent accomplishment was to shepherd the publication of the

AP-42, Fifth Edition.
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Emission Inventory Improvement Program (EIIP)

by Steve Bromberg, EFIG

The Emission Inventory Improvement Program is beginning a series of

meetings across the country to acquaint the inventory community with procedures developed by its committees. EPA Regional Offices will be hosting these

meetings. The day-long session will concentrate on presentations describing

how to use and implement EIIP documents. Meetings have been scheduled in

Regions 6, 9, and 10. Additional meetings will be scheduled as time and resources permit.

As part of the EIIP outreach program, in addition to the Regional Office meetings, a series of introductory materials will be prepared and mailed to the inventory community. The first two issues will describe

the overall EIIP program, its goals, and the importance of the Program to being able to develop an inventory

of known quality and consistency. Subsequent issues will feature articles from each of the operating

committees. The articles are intended to raise the awareness of the importance of having defensible

emission estimates and how the EIIP approach can assist in meeting this need.

EIIP is preparing to publish its completed documents by the end of the calendar year. Current estimates are that the entire set will contain approximately 2500 pages. Because of the expense of printing

such a large volume, and because the document will be continuously updated as new chapters are added

and improvements made to current procedures, alternate means are being investigated for distributing the

material. An EIIP Home Page is currently under development and new material is expected to be available

for downloading from the Internet by the end of 1996.

1990 O3/CO SIP Emission Inventories on CD-ROM

by David Misenheimer, EFIG

In response to the 1990 Clean Air Act Amendments, a large effort was devoted to preparing 1990

baseline emission inventories (EI) for ozone and carbon monoxide State Implementation Plans (SIP).

1990 EI’s for nonattainment areas in Connecticut, Louisiana, Maine, Massachusetts, Missouri, Rhode

Island, Texas, and Tennessee (Nashville only) can now be obtained on a single Compact Disc-Read Only

Memory (CD-ROM) disk.

Contained on the 1990 SIP EI CD-ROM is documentation describing how the inventory was prepared, summary results of the inventory, detailed emissions data (where available), and MOBILE model

input and output (where available). The inventory information is formatted with the Folio® Infobase Viewer

software which operates in the Microsoft Windows® environment. In addition to supporting on-screen

viewing, the Folio® Viewer software supports printing, word searches, and insertion of notes and bookmarks in a “shadow-file” format. Data and text files are also included on the 1990 SIP EI CD-ROM in their

native format.

Minimum equipment requirements to operate the 1990 SIP EI CD-ROM include a computer with a

486 processor running at 33 megahertz with 6 megabytes extended memory, a CD-ROM drive, an interface card, Microsoft® CD-ROM Extensions, and vendor-specific drivers and other files for operation of the

CD-ROM drive. The Emission Inventory CD-ROM runs on Microsoft Windows® Version 3.0 or later and

requires a mouse for effective operation.

Copies of the 1990 SIP EI CD-ROM will be available by September. Because of budget shortfalls,

there are no plans to add additional emission inventories to the CD-ROM.
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Info CHIEF's Most Frequently Asked Questions

Call (919) 541-5285 or e-mail info.chief@epamail.epa.gov

if you have questions!

Q: While trying to enter TANKS 3.0, I got an error message that said "Unable to open program

databases". How can I get back into the program without losing my data?

A: Sometimes the TANKS 3.0 program will "crash" due to negative or zero value data or a computer

system failure (such as a power outage) will cause damage to some TANKS 3.0 index files. If you are

unable to get into the TANKS program as a result of this, you will need to manually delete the index

(*.CDX) files from the DATA and TANKDATA subdirectories (you may also need to delete the *.CDX files

from user-created directories). Once these files have been deleted, the system will then automatically

recreate the index files when you re-enter the system. As a rule of thumb, it is a good idea to save the data

files (*.DBF) from these subdirectories to a temporary directory outside of the TANKS3 directory. This will

ensure that you do not lose any data, and if deleting the *.CDX files does not work, you can reinstall

TANKS 3.0 and then import the *.DBF files back into the reinstalled copy. If you do not feel comfortable

with following these instructions, you can always call the Info CHIEF help desk and we will "walk" you

through the procedure.

Q: Why does the TANKS 3.0 program give me a vapor pressure error?

A: The program cannot handle liquids with a vapor pressure greater than the atmospheric pressure

because this means that they are boiling. Conversely, the vapor prerssure of a liquid in a fixed roof tank

may be too low for the program to handle. If this is the problem, try setting the pressure/vacuum vents to

zero.

Q: How can I get training for EPA electronic emission estimation tools, such as Air CHIEF?

A: EFIG and Info CHIEF staff always conduct a training course at the Air & Waste Management Association's

(A&WMA) Annual Meeting and the A&WMA/EPA Emission Inventory Conference. We also provide training to EPA Regional Offices when funding allows. For the remainder of the year, we have plans to conduct

training at the A&WMA/EPA Emission Inventory Conference in New Orleans, LA on September 3 (see

page 1) and regional/state training in Raleigh, NC on December 1. We also have tentative plans to do a

training session in Charlotte, NC for the Carolinas Environmental School, sponsored by the Charlotte

Chamber of Commerce in early October. We can provide training to agencies that can provide funding;

if you are interested, please call Info CHIEF for information.

Q: When will the next version of the Air CHIEF CD-ROM be available, and will it include Supplement A for AP-42?

A: Unfortunately, EFIG has experienced setbacks due to budgetary constraints and will not be able to fund

the production of a new version of Air CHIEF this year. We expect to produce a new version of Air CHIEF

sometime around Fall 1997, which will include Supplement A and B for AP-42, TANKS 3.0, the latest

version of FIRE, and the Emission Inventory Improvement Program (EIIP) documents. Check the CHIEF

BBS, the listserver, web pages and this newsletter for more information in the future.
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EFIG Compiles the National Air Toxic Inventory

by Anne A. Pope, EFIG and Darcy Wilson, Eastern Research Group

A National Toxics Inventory (NTI) of U.S. HAP emissions was developed and is maintained by EPA’s

Emission Factor and Inventory Group (EFIG) to meet requirements in the Clean Air Act (CAA). The CAA,

as amended in 1990, requires the U. S. Environmental Protection Agency (EPA) to develop significant new

air quality programs and enhance existing programs for hazardous air pollutants (HAPs). These programs require inventory data to identify sources and to assess the public health and environmental impacts of HAPs. The NTI will support EPA efforts to meet the mandates of 1990 Amendments to the CAA,

such as:

* Evaluation of health and environmental effects in support of emission standards development

* Assessment of petitions for HAP source category and pollutant additions or deletions

* Evaluation of source categories and HAPs related to development of special studies (Mercury

Study, Utility Study)

* Identification of source categories of seven listed HAPs to develop standards under Title III, Section

112(c)(6)

* Assessment of health effects and health risks associated with emissions standards (residual risk)

* Characterization of the nature and magnitude of the air toxics problems in urban areas under Title

III, Section 112(k)

* Development of national and regional strategies and programs for air quality management based

on assessments of health and ecological effects and exposure and risk (Great Waters Program,

etc.)

* Tracking of ozone depleting substances under Title VI.

EFIG is including NTI data in its 1996 TRENDS report. Other potential stakeholders include state and

local agencies, regional authorities, general public, and industry and trade associations. The data needed

to support the many air toxics programs can be shared between stakeholders. For example, data gathered to develop emission standards (MACT) for an industry may be used to assess air toxics emissions in

urban areas, or assist a facility in developing its Title V permit. Alternatively, facility-specific information

provided by a facility in its Title V permit may be used by EPA to estimate emissions for an entire source

category.

The NTI contains estimates of mobile and stationary source emissions. Emissions are allocated at

the county level in the inventory. Approximately 350 pollutants and 800 source categories are included in

the inventory. Source specific data are used when available. EFIG has obtained state and local inventories to incorporate into the NTI. Version 2.0 of the NTI contains inventory data from the California Hot Spots

Program (point source), Chicago five county/Illinois area source inventory, Puget sound area source inventory, Houston area source inventory (HASTE), and recent Phoenix and Tucson inventories (point, area,

& mobile sources). When state and local inventory data are unavailable, data used to develop MACT

standards are incorporated for selected source categories (glycol dehydrators, pulp & paper, petroleum

refinery, utility data, consumer solvents, etc.). The Toxic Release Inventory (TRI) data are used if state and

local inventory and MACT data are unavailable. If these three sources of HAP data are unavailable, then

estimates are generated using emission factors and source activity data. The NTI is a work in progress

(Cont. on p. 9)
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Air Toxics (Cont. from p. 8)

and additional data to improve NTI estimates include MACTand state and local inventory data and Title V

permit data. Other potential improvements to the NTI include gap-filling in source/pollutant data, and better

correlation between monitoring and emission inventory data.

Version 2.0 of the NTI estimates that 4.4 million tons of HAPs (list of 189 as defined under Title III of

CAA) are released to the air. Areas sources account for approximately 31 percent of HAP emissions,

mobile sources account for 39 percent of HAP emissions, and point sources account for 30 percent of

HAP emissions. TRI data in NTI account for only approximately 15 percent of the total 4.4 million tons

emissions of HAPs. The use of non-TRI data has been particularly important in presenting a more complete picture of the magnitude and contributing sources of HAP emissions.

-42 Revisions

EFIG Projects on the Horizon

by Roy Huntley, EFIG

The EFIG staff is continually revising and updating the Compilation of Air Pollutant Emission Factors

(AP-42) and the Locating and Estimating (L&E) document series on air toxics. Below are some brief

descriptions of projects that are currently funded. We always welcome comments about the value of our

efforts, and we especially welcome data. Call Info CHIEF, (919) 541-5285 for questions or comments.

Abrasive Blasting

Alumina

Arsenic L&E document

Bread Baking

Brick & Related Clay Products

Coke Production

Distilled Liquors

FIRE Update

Grain Elevators

Hot Mix Asphalt

Lead L&E document

Municipal Solid Waste Landfills

Organic Liquid Storage (TANKS)

Paved Roads

Surface Coal Mining

Unpaved Roads

Mercury L&E document

Update Internal Combustion Engines

Update Natural Gas Combustion

Update Boiler NOx (emission factors

from the Acid Rain Program)

Steel Manufacturing

Projects currently underway: New Starts:

Call

Info CHIEF

 at

(919) 541-5285!

OTAG Emission Inventory

by Steve Bromberg

The OTAG Emission Inventory Workgroup is nearing completion of its effort. As the data are beginning to be used by the Modeling Workgroup, some errors are being discovered. When these are brought

to the attention of the respective states, corrections are made and the revised data are incorporated into

the inventory. Version 3 is now the latest OTAG inventory available. It can be downloaded from the FTP

site earth1.epa.gov in the directory /pub/gopher/EmisInventory.

The A&WMA/EPA Emission Inventory Speciality

Conference to be held in September will feature a session that describes how the inventory was developed,

the development of future year inventories based on the

1990 data, and how state data were combined with the

EPA Interim Inventory to build the OTAG 1990 Base Inventory. A separate OTAG publication that provides details for all of the inventory activities should be completed

by the end of 1996.
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National Emission Trends CD-ROM Viewer

by Bill Barnard, E.H. Pechan and Associates, Inc.

Through a contract with E.H. Pechan and Associates, Inc., EFIG has developed a CD-ROM version

of summary level data from EPA’s National Emissions Trends data base. The National Emission Trends

CD-ROM Viewer was developed to provide easy access to summary emissions data. Emissions for the

years 1985-1994 are stored by tier category and by Standard Industrial Class (SIC) at the county, nonattainment area, state, and national levels.

Software developed using Microsoft Access® allows the user to generate emission reports, by choosing

the source-type grouping (SIC, Tier 1, etc.), geographic basis (county, state, etc.), year, or report destination (screen, file, or printer). The summary emission tables may also be exported into dBase IV® format.

Although the summary tables contain data for multiple years, users may opt to export a single year’s data,

rather than all years. The first edition of the CD-ROM viewer should be available in August or September.

The CHIEF Newsletter

Volume VII, No. 3

Summer 1996

PAMS Could Benefit Emission Inventories

by Tom Pace, EFIG

The Photochemical Assessment Monitoring System (PAMS) fulfills a requirement of the 1990 Clean

Air Act (CAA) to monitor ozone and its precursors in ozone nonattainment areas with the most difficult

problems. In this monitoring system, ozone, ground level and upper air meteorology, and 55 species of

volatile organic compounds (VOC) are routinely measured at 3 or 4 sites per metropolitan area. The

potential benefits to the VOC and nitrogen oxide (NOx) emission inventory programs are significant. The

55 species include key tracers for biogenic and mobile source emissions and the meteorological information permits comparison between the inventory and measurements of key species emitted from major

sources. More elegant mathematical procedures such as the Chemical Mass Balance can also be used

to interpret the data.

In July 1996, the first of a series of workshops was held in Philadelphia to discuss ways in which

emission inventories and other ozone issues could benefit from analysis of the PAMS data. The workshop was quite successful and similar workshops are planned to be held in Boston and New Orleans in

the near future. Contact Tom Pace, (919) 541-5634, Mark Schmidt, (919) 541-2416 or James Hemby,

(919) 541-5459 for more information.

The CHIEF Newsletter is produced quarterly by the Emission

Factor and Inventory Group; Emissions, Monitoring, and Analysis 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 Emission Factor and Inventory Group (MD-14), US EPA,

Research Triangle Park, NC 27711; telephone (919) 541-5285.

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.