Emissions Estimation Tools
1
United States
Environmental Protection
Agency
EPA-454/F-02-001
May 2002
This brochure provides an overview of the US
Environmental Protection Agency's (EPA) air toxics
and criteria emission estimating tools. EPA develops
air emission inventory tools for point and area
sources to support many activities, including: Clean
Air Act requirements, State Implementation Plans
(SIP), SARA 313 reporting requirements, and other
emission estimating and assessment activities. Most
of these tools are developed and maintained by the
Emission Factor and Inventory Group (EFIG) within
EPA's Office of Air Quality Planning and Standards
(OAQPS).
This brochure describes each tool and its intended
use. Users should select the tool(s) best suited to
their projects and obtain the reports or computer
databases necessary. For further information on any
of these tools, call Info CHIEF at (919) 541-1000,
or write:
Info CHIEF
U. S. Environmental Protection Agency
Emission Factor and Inventory Group
(D205-01)
Research Triangle Park, NC 27711
(E-mail: info.chief@epa.gov)
These estimating tools should be used with
discretion. Actual emissions from individual sources
may vary considerably from values estimated by
using emission and speciation factors. Source-
specific emission test data are generally preferred,
when available. EFIG welcomes any emission data
that would help improve the emissions estimating
tools presented in this brochure.
Office Of Air Quality Planning And Standards
Research Triangle Park, NC 27711
&EPA
Tools
For Estimating
Criteria and Toxic
Air Pollutants
Emission Factor and Inventory Group
Emissions, Monitoring, and Analysis Division
Office Of Air Quality Planning and Standards
U. S. Environmental Protection Agency
To learn more about any
items mentioned here
contact:
The Info CHIEF
Help Desk
(919) 541*1000
or visit our web site at
wvm.epa.gov/ttn/chief/

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COMPUTER TOOLS
The Air CHIEF CD-ROM is the most comprehensive tool for
retrieving emission estimation data. The disc contains a
wealth of information, includingthe
AP-42 Volume I, EIIP documents,
L&E series, FIRE, RTECS
Chemical Synonym List, the SCC
list, and the SIC list. A user
manual and installable copies of
FIRE, PMCalculator, Water9 and TANKS are also
included. Contact Info CHIEF for more information about
the Air CHIEF CD-ROM.
The Factor Information And Retrieval Data System (FIRE)
is a PC program containing EPA's recommended criteria and
hazardous air pollutant emission estimation factors. Users
;an browse through records in the database or select specific
emission factors. FIRE is available from the CHIEF Web
site and is on the Air CHIEF CD-ROM.
PM Calculator will estimate
filterable PM2.5 emissions. This
software is applicable to point sources
only and requires the user to input
uncontrolled emissions (either total
filterable particulate or filterable PM 10) for each source, the
source category classification (SCC) and the control device,
if any. The program will then calculate controlled emissions
for filterable PM2.5 and filterable PMIO for each point
source. PM Calculator is available from the CHIEF Web site
and is on the Air CHIEF CD-ROM.
SPECIA TE is EPA's repository of Total Organic Compound
(TOC) and Particulate Matter (PM) speciated profiles for a
variety of sources for use in source apportionment studies.
This release of SPECIATE no longer contains profiles
assigned to SCC's. Instead, searching for profiles by keyword
has been improved and of course the user can still browse
through the profiles. SPECIATE is available from the
CHIEF Web site and is on the Air CHIEF CD-ROM.
TANKS is a PC software program for estimating volatile
arganic compound (VOC) emissions from both fixed and
floating roof storage tanks. The TANKS program is available
from the CHIEF Web site and the Air CHIEF CD-ROM.
WATER9 consists of analytical expressions for estimating air
emissions of individual waste constituents in wastewater
collection, storage, treatment, and disposal facilities; a database
listing many of the organic compounds; and procedures for
obtaining reports of constituent fates, including air emissions
and treatment effectiveness. WATER9 is a significant upgrade
of features previously obtained in the computer programs
WATER8, Chem9,ax\dChemdat8. WATER9 is available from
the CHIEF Web site and is on the Air CHIEF CD-ROM.
ON-LINE RESOURCES
INTERNET & E-MAIL
ACCESS
The CHIEF Listserv allows you to receiv
announcements relevant to the functions of EFIG an>
EIIP via e-mail. In addition, you will receive a:
electronic text version of EFIG's publication, the CHIEl
Newsletter. To subscribe, open your internet browsei
Go to https://lists.epa.gov/cgi-bin/lyris.pl. From the Mail
Menu, click on CHIEF. From the next window, click 01
CHIEF. At the bottom of the 'Enter Mailing list CHIEf
window, click on 'Join chief.'
Get connected with emission factor and inventor
information on the Internet World Wide Web! Th
CHIEF Web site serves as a gateway to many relate'
sites, including the Emission Inventory Improvemer
Program (EIIP) Web site, the PM2.5 Inventory Resourc
Center and the Emissions Modeling Clearinghouse. Her
is a list of our most popular Web sites:
The Emission Inventory Improvement Program (EIIP) isajoint
program of the EPA, SAEWG, and STAPPA/ALAPCO. The
ultimate goal of the EIIP is to provide cost-effective, reliable
inventories by improving the quality of emissions data collected
and provide for uniform reporting of this information. Their
findings are available in a seven volume set of guidance reports,
which are available on the EIIP Web site and the AIR CHIEF
CD. For more information, call Info CHIEF.
EPA's Emission Factor and Inventory prepares a national
database, called the National Emissions Inventory, of air
emissions information with input from numerous State and local
air agencies, from tribes, and from industry. Documentation
and teaching tools to support the inventory work are available
inelectronic format. Documentation includes the Handbookfo r
A ir Toxics Emission Inventory Development and the Handbook
for Criteria Pollutant Inventory Development. Contact the Info
CHIEF Help Desk for assistance. Annual emissions inventory
data is available on the EPA's Air Data Web site at
www.epa.gov/air/data/
CHIEF Web site
www.epa.gov/ttn/chief/
w
Q-
EIIP Web site
www.epa.gov/ttn/chief/eiip/
.
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National Air Pollutant EmissionTrends
www.epa.gov/ttn/chief/trends/

Emissions Modeling Clearinghouse
www.epa.gov/ttn/chief/emch/
a l£
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PM2.5 Inventory Resource Center
www.epa.gov/ttn/chief/eiip/pm25inventory/
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AirData
www.epa.gov/air/data/
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The Compilation of Air Pollutant Emission Factors, AP-42 is
a source of air pollutant emission factors for both criteria and
toxic emissions. AP-42
Volume I addresses hundreds
of stationary, point, and area
sources and Volume II deals
with mobile sources. EPA
emission rates for many
polluting activities are obtained
from source tests, material
balance studies, and
engineering estimates and then collected, approved, and
compiled into the AP-42 document. AP-42 is available on the
CHIEF Web site and Air CHIEF CD.

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