EPA-450/4-88-020
EMISSION INVENTORY
REQUIREMENTS FOR
PosT-1987 CARBON MONOXIDE
STATE IMPLEMENTATION PLANS
BY
THOMAS N. BRAVERMAN
TECHNICAL SUPPORT DIVISION
OFFICE OF AIR QUALITY PLANNING AND STANDARDS
U. S. ENVIRONMENTAL PROTECTION AGENCY
RESEARCH TRIANGLE PARK, NC 27711
DECEMBER 1988
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This report has been reviewed by the Office Of Air Quality Planning And Standards, U. S. Environmental Protection
Agency, and has been approved for publication. Any mention of trade names or commercial products is not intended
to constitute endorsement or recommendation for use.
EPA-45(V4-88-020
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TABLE OF CONTENTS
1.0 INTRODUCTION 2
2.0 EMISSION INVENTORY REQUIREMENTS 3
2.1 Pollutants 3
2.2 Base Year 3
2.3 Geographic Area 3
2.3.1 Exclusion Of Whole Counties From MSA/CMSA . . 3
2.3.2 Exclusion Of Sub-county Portions From
MSA/CMSA 3
2.4 Hot Spot Demonstrations 4
2.5 Source Categories 7
2.5.1 Mobile Sources 7
2.5.2 Point Sources 8
2.5.3 Area Sources 8
2.6 Rule Effectiveness 9
2.6.1 Transportation Control Measures (TCMs). ... 10
2.6.2 Inspection/Maintenance (I/M) And
Anti-tampering Programs 11
2.6.3 Fuels Programs 11
2.7 Temporal Allocation 11
2.8 Spatial Allocation 13
2.9 Format 14
2.10 Schedule 15
3.0 Documentation 16
3.1 Mobile Source Requirements 17
3.1.1 Highway Vehicles 17
3.1.2 Off-highway Vehicles 18
3.2 Point Source Requirements 18
3.2.1 Plant Information 19
3.2.2 Point Information 19
3.2.3 Segment Information 19
3.3 Area Source Requirements 19
4.0 References 20
5.0 Supplemental Bibliography 21
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1.0 INTRODUCTION
On June 6, 1988, EPA proposed to designate as nonattainment under
the Clean Air Act those areas throughout the Nation that had not
attained the National Ambient Air Quality Standards (NAAQS) for carbon
monoxide (see 53 FR 20722). Subsequently, EPA Regional Administrators
sent letters to the Governors of the affected States requesting that
they or their designated local agencies develop schedules for
compiling emission inventories needed as part of their State
implementation plans (SIPs) (see 53 FR 34500, September 7, 1988). The
EPA is requiring that the development of these inventories be
initiated in advance of the finalization of the post-1987 ozone/CO
policy because of the considerable time and effort needed to compile
important components of the inventory [e.g., vehicle-miles traveled
(VMT) data].
The specific requirements for the base year CO SIP emission
inventories are contained in this document. General guidance and
procedures for preparing CO emission inventories are contained in
other documents which are listed in Sections 4 and 5 of this report.
The requirements for the projection year inventory and the reasonable
further progress (RFP) provisions are not currently covered in this
document, but will be covered in a revision to this document to be
issued at a later date.
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average population density in the excluded area does not exceed 50
people per square mile and is not projected to exceed this level for
at least 10 years, and (b) they do not contain urbanized areas of at
least 50,000 population and are not projected to contain urbanized
areas of at least 50,000 in the next 10 years.
Areas expecting to submit hot spot demonstrations
will be required to provide an areawide inventory covering either the
MSA/CMSA or the area remaining after applying the above exclusion
criteria. Further discussion of hot spot demonstrations is given in
the following section.
2.4 Hot Spot Demonstrations
Every CO violation can be thought of as having two
components: a hot spot or microscale component, and an areawide or
mesoscale component. Each of these components are treated differently
in terms of emissions inventory, modeling and control strategy
requirements.
A hot spot can be defined as a CO violation with an
identifiable nearby source and a high contribution from the microscale
component. A small town may have only one hot spot, such as a bridge
or tunnel, while a larger city may have multiple hot spots, such as
traffic congestion at numerous intersections.
State or local agencies may demonstrate attainment using
only hot spot measures, only areawide measures, or a combination of
areawide and hot spot measures. Attainment demonstrations relying
mainly or exclusively on hot spot measures, where there is not a
significant areawide contribution, must demonstrate that the problem
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is caused or contributed to by hot spots and that the hot spot
measures will provide for near-term attainment. This hot spot
demonstration consists of an identification of hot spots, a modeling
analysis, and a demonstration of attainment discussed further below.
Identification of Hot Spots. The entire MSA/CMSA or reduced
area (see Section 2.3) must be analyzed to determine where the hot
spots exist. Surrogate parameters such as average daily traffic (ADT)
levels may be used to identify likely hot spots for further analysis.
Modeling Analysis. The analysis should employ both hot spot
and areawide modeling to determine: (1) the number of hot spots
exceeding the NAAQS, (2) the peak hot spot(s), (3) the levels of hot
spots, (4) the areawide contribution, and (5) the effects of control
strategies on projected hot spots. The EPA recommended model for hot
spots is Worksheet 2 of the Guideline for Air Quality Maintenance
Planning and Analysis, Volume 9 ("Revised): Evaluating Indirect
Sources1 for determining emissions and traffic input to CALINE3
dispersion model.2 The EPA recommended areawide models are the RAM
Model3 or Urban Airshed4.
Demonstration of attainment. For control strategies relying
on hot spot measures, the SIP must demonstrate attainment in the near-
term which is defined as 4 years from SIP due date. If near-term
attainment cannot be demonstrated with hot spot measures alone,
areawide measures must be added.
If attainment cannot be demonstrated in the 4-year period,
areawide measures must be added at a rate that would achieve 3 percent
reduction per year of the adjusted areawide baseline CO inventory.
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This annual reduction requirement starts in the base year. (See
November 24, 1987, Federal Register proposal for the adjustment
procedure and a description of the annual reduction requirement.)
Whether near-term attainment is demonstrated with hot spot
measures only or a combination of hot spot and areawide measures, the
hot spot measures must be implemented within the 4-year period. If
near-terra attainment is not feasible and long-term attainment is
demonstrated, the hot spot measures may be implemented at any date
prior to the attainment date, provided that the annual areawide 3
percent reduction requirement is met. Because hot spot measures
affect limited areas, the State or local agency must demonstrate
attainment for each hot spot identified.
As mentioned in Section 2.3, EPA will require an areawide
inventory for hot spot demonstrations. An areawide inventory is
needed to determine the areawide component of the hot spot violation.
Also, as part of the hot spot demonstration, the State or local agency
is requested to look beyond the hot spot to identify other potential
hot spots and to determine the areal extent of high air quality
levels. An areawide inventory would aid in this effort because in
developing the inventory the Agency gathers information on speed, VMT,
vehicle characteristics, etc. Also, projections of the areawide
inventory would consider growth in VMT, changes in speed, etc. which
should support the projections made regarding the areawide component
of the hot spot. Therefore an areawide inventory is needed for hot
spot demonstrations, as well as areawide demonstrations.
Consequently, the remainder of this document will focus on areawide
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emission inventory requirements. Specific requirements for hot spot
analysis are contained in Worksheet 2 of the Guideline For Air Quality
Maintenance Planning And Analysis. Volume IX (revised); Evaluating
Indirect Sources.
2.5 Source Categories
Mobile sources and stationary point and area sources shall
be included in the areawide emissions inventory. A separate
discussion of mobile, point, and area sources follows.
2.5.1 Mobile Sources
Mobile sources consist of highway and off-highway
vehicles. While highway vehicles are the major contributors to CO
emissions, both highway and off-highway vehicles shall be included in
the inventory.
Local traffic emissions, as well as major highway
emissions, shall be included in the highway vehicle emissions
inventory. The highway vehicle emissions shall be derived by
multiplying vehicle-miles traveled (VMT) by MOBILE4 emission factors.
The VMT shall be obtained by using procedures described in Chapter 4
of Procedures For Emission Inventory Preparation. Volume IV: Mobile
Sources.' The base year for VMT data shall be 1987 or 1988. The
MOBILE4 emission factors shall be obtained by applying the MOBILE4
model. The User's Guide to MOBILE46 describes how to use the MOBILE4
model and references other documents that provide guidance on how to
develop inputs. The temperature input to MOBILE4 should be the
average temperature over the time period that coincides with the 10
highest 8-hour non-overlapping CO monitored concentrations recorded in
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the area over the most recent 3 years. Requirements for documenting
the highway vehicle emissions inventory are contained in Section 3.1.1
of this document.
Off-highway vehicles that should be included in the
inventory are aircraft, railroads, vessels, industrial equipment,
construction equipment, and other sources unique to each geographic
area (e.g., snowmobiles). Guidance for developing the off-highway
vehicle emissions inventory is contained in Procedures For Emission
Inventory Preparation. Volume IV: Mobile Sources.5 Requirements for
documenting the off-highway vehicle emissions inventory are contained
in Section 3.1.2 of this document.
2.5.2 Point Sources
At a minimum, stationary sources (facilities) that
emit equal to or greater than 100 tons per year (TPY) actual emissions
of CO shall be included in the point source inventory. Smaller
sources may either be included in the point source inventory or
aggregated in the area source inventory, at the discretion of the
agency compiling the emissions inventory.
The major point source categories of CO emissions are
combustion and industrial processes. Specific types of sources to be
included in these categories and procedures for inventorying them are
contained in Procedures For Emission Inventory Preparation. Volume II:
Point Sources.7 Requirements for documenting this point sources
emissions inventory are contained in Section 3.2 of this document.
2.5.3 Area Sources
Area sources include those stationary sources that
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are too small and/or too numerous to be included in the point source
emissions inventory. One such source category is residential fuel
combustion including wood stoves and fireplaces. Area source
emissions generally are estimated by multiplying an activity level,
such as population, by an emission factor. A list of area source
categories and procedures for inventorying these categories are
contained in Procedures For Emission Inventory Preparation. Volume
III: Area Sources.8 Requirements for documenting the area source
emission inventory are contained in Section 3.3 of this document.
2.6 Rule Effectiveness
Past inventories have assumed that regulatory programs would
be implemented with full effectiveness, achieving all of the required
or intended emission reductions and maintaining that level over time.
However, experience has shown regulatory programs to be less than 100
percent effective for most source categories in most areas of the
country. The concept of applying rule effectiveness (RE) in the SIP
emission inventory has evolved from this observation. In short, RE
reflects the ability of a regulatory program to achieve all the
emission reductions that could be achieved by full compliance with the
applicable regulations at all sources at all times.
Several factors should be taken into account when estimating
the effectiveness of a regulatory program. These include: (l) the
nature of the regulation (e.g., whether any ambiguities or
deficiencies exist, whether test methods and/or recordkeeping
requirements are prescribed); (2) the nature of the compliance
procedures (e.g., taking into account the long-term performance
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capabilities of the control); (3) the performance of the source in
maintaining compliance over time (e.g., training programs, maintenance
schedule, recordkeeping practices); and (4) the performance of the
implementing agency in assuring compliance (e.g., training programs,
inspection schedules, follow-up procedures).
Rule effectiveness shall be applied for stationary sources
that are affected by a regulation and for which emissions are
determined by means of emission factors and control efficiency
estimates. No rule effectiveness factor is needed in cases where no
control is applied or there is no applicable regulation. For mobile
sources, rule effectiveness factors shall be considered and applied
where appropriate. Information on applying rule effectiveness for
specific mobile source controls are given below.
2.6.1 Transportation Control Measures (TCMs)
The TCMs are often designed to reduce certain
activity levels such as VMT to a specified level or by a set amount.
Since the base-year mobile source inventory relies on measurements or
estimates of actual activity levels (including VMT, speed, etc.)
occurring in the base year, the effects of TCMs already implemented
will be taken into account in generating the inventory. Therefore,
EPA will not require adjustment of the base year inventory to account
for TCM effectiveness. However, EPA will require the expected
reductions from future TCMs to be adjusted for effectiveness, because
future strategies are subject to doubt as to whether the target VMT
reductions or the underlying assumptions will actually be realized.
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Emission reductions from future TCMs need to be adjusted for
effectiveness much like any stationary source strategy.
2.6.2 Inspection/Maintenance (I/M) and Anti-tampering
Programs
The effectiveness of I/M and anti-tampering programs
will be considered in the base-year inventory, but not by applying an
overall adjustment to the full effectiveness level. The MOBILE4
emission factor model contains an internal feature that adjusts for
the effectiveness of the Federal Motor Vehicle Control Program (FMVCP)
when a decentralized, manual inspection program is used. The model
also requires local inputs for waiver rates and compliance rates.
Operating data should be from the calendar year corresponding to the
base-year inventory.
2.6.3 Fuels Programs
Fuels programs, such as local controls on volatility,
should be adjusted for effectiveness because of a number of
assumptions regarding market penetration, compliance, etc. associated
with implementation of such programs. States should contact the EPA
Regional Office for guidance on how to adjust the base-year inventory
for the effectiveness of these programs.
2.7 Temporal Allocation
The degree of temporal allocation needed for the emissions
inventory depends on the technique being used to demonstrate control
strategies. The recommended techniques for control strategy
demonstrations are the RAM Model3 and the Urban Airshed Model,4
although linear rollback is acceptable.
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If linear rollback is utilized for control strategy
demonstrations, emissions need to be temporally allocated to a
representative weekday in the CO season (winter in most areas).
Emission estimates for point, area, and off-highway mobile sources are
frequently maintained on an annual basis in State and local
inventories. These annual emissions should first be allocated to the
months comprising the CO season. These are the months in which the
highest CO concentrations occur in the area. The emissions should
then be allocated to a representative weekday within the CO season.
Generally, highway mobile source emission estimates are
determined for an average annual weekday by the responsible
Metropolitan Planning Organization or State Department of
Transportation. To develop an emissions inventory for a
representative CO season weekday, emission estimates for the CO season
can be used if available, or a seasonal factor can be applied to
average annual estimates to adjust for increases or decreases in
travel during the CO season. Adjustment factors can be derived from
local traffic counting programs.
If a dispersion model is to be used for control strategy
demonstrations, then hourly emission estimates for the representative
weekday in the CO season will be needed for input to the dispersion
model. Guidance on preparing a temporally resolved emission inventory
for dispersion modeling is contained in Procedures For The Preparation
Of Emission Inventories For Volatile Organic Compounds. Volume II:
Emission Inventory Requirements For Photochemical Air Quality
Simulation Models.9 Although this document was prepared specifically
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for temporal allocation of VOC emissions, the guidance is generally
applicable to CO emissions.
2.8 Spatial Allocation
The degree of spatial allocation needed for the emissions
inventory depends on the technique being used to demonstrate control
strategies. Again, the recommended techniques for control strategy
demonstrations are the RAM Model3 and Urban Airshed Model4, although
linear rollback is acceptable.
If the RAM Model is used for control strategy
demonstrations, mobile and area sources need to be allocated to square
grid cells within the modeling domain that covers the geographic area
of the inventory discussed in Section 2.3 of this document. The size
of the grid cells used in the RAM Model can vary over the modeling,
domain. The recommended grid square sizes are from l to 5 kilometers
(km), with 1 km grid square recommended for the central business
district (CBD) of urban areas and larger grid squares recommended for
areas outside the CBD. Dispersion models such as the RAM model
require that point sources be allocated to the exact location in UTM
coordinates and that stack parameters (e.g., height, diameter, exit
velocity, and exit temperature) be specified for input.
Guidance on preparing a spatially resolved emissions
inventory for dispersion modeling is contained in Procedures For The
Preparation Of Emission Inventories For Volatile Organic Compounds.
Volume II: Emission Inventory Requirements For Photochemical Air
Quality Simulation Models.9 Again, although this document was
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prepared specifically for spatial allocation of VOC emissions, the
guidance is generally applicable to CO emissions.
The spatial allocation requirements for the Urban Airshed
Model (UAM) are the same as those for the RAM Model with one
difference. The difference is that the grid square size for
allocation of mobile and area sources needs to remain constant over
the modeling domain for the UAM. The recommended grid square size for
UAM is from 2 to 5 kilometers. The choice of grid square size depends
on the size of the area being modeled, the resources available for
modeling, and the degree of resolution needed to determine the effects
of a particular control strategy.
If linear rollback is utilized for control strategy
demonstrations, a minimal spatial allocation of emissions is needed.
An area choosing to use linear rollback shall report countywide mobile
and area source emissions totals by source category, with point
sources listed separately. Point source data shall include addresses
of sources and emissions data. Further information on the
requirements for point sources is given in Section 3.2 of this
document.
2.9 Format
The SIP Air Emissions Inventory Management System 10 or an
equivalent format should be used to maintain and report the emissions
inventory. At a minimum, the temporally allocated emissions (see
Section 2.7) shall be submitted on a countywide basis for each mobile
and area source category contained in the inventory. Each point
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source shall be listed separately and shall contain the point, plant,
and segment information contained in Section 3.2 of this document.
2.10 Schedule
A complete base-year emission inventory is to be submitted
to EPA in mid-November 1989, approximately one (l) year from the
completion of the Workshops for Development of 0.,/CO SIP Emissions
Inventories. The final inventory which shall include any revisions or
additions that result from the State's response to EPA's review and
projections is due approximately two (2) years after EPA issues the
post-1987 ozone/CO policy. Specific due dates shall be determined by
the appropriate EPA Regional Offices after review of the schedules
proposed by the States.
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and grid squares overlaid on top of it shall be included. The grid
square sizes need to be indicated on the map.
3.1 Mobile Source Requirements
The narrative report prepared by the State or local agency
should include documentation of the following components of the mobile
source inventory.
3.1.1 Highway Vehicles
The model used to develop the necessary travel information
and the transportation agency that ran the model. The name and phone
number of the appropriate contact at the agency should be included.
- The year that the travel information was generated, the
base-year of the VMT estimate employed to create the base-year
inventory VMT estimate, and the procedure used to interpolate between
them to create speed estimates. Identify the level of disaggregation
(e.g., facility types) at which these calculations were developed.
- The data used to estimate 1987 or 1988 VMT from the base
highway VMT. •Discuss the method used, whether the traffic counts were
facility-specific or other data were employed to create the 1987 or
1988 estimate. Identify the source and date of the data used to
project VMT levels for all years.
- The road classifications used to develop the VMT and
speed estimates in each of the inventory years. Note the VMT and
speed estimates by facility type for each year in the inventory.
- The method and source used to develop an estimate of
travel the occurred within the boundaries of the transportation
planning area but was not included in the highway network estimate.
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Note the percentage of total VMT that occurred off the highway
network, but within the transportation planning area and the
associated speed estimates for these VMT for each year in the
inventory.
- The method and source used to develop an estimate of
travel that occurred outside the transportation planning area, but
within the boundaries of the emissions inventory area determined by
applying criteria in Section 2.3 of this document. Note the
percentage of the total VMT that occurred outside the transportation
planning area, but within the boundaries of the emissions inventory
area and the associated speed estimates for these VMT for each year in
the inventory.
- The methods used to develop inputs to MOBILE4 and the
actual inputs to MOBILE4, including speeds and temperature.
- The MOBILE4 outputs.
The temporally allocated emissions.
3.1.2 Off-highway Vehicles
- Source categories included in the inventory.
The methods used to estimate emissions for each source
category, including the activity level and emission factor.
The temporally allocated emissions.
3.2 Point Source Requirements
The following plant, point, and segment information is
required. In addition, if a dispersion model is being used for
control strategy demonstrations, Universal Transverse Mercator (UTM)
zone, UTM coordinates, and stack parameters shall be documented.
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3.2.1 Plant Information
National Emissions Data System (NEDS) ID: (State,
County, Plant)
- Name, Address, City, Zip Code
- Standard Industrial Code (SIC) Code
- Principal Product
3.2.2 Point Information
- NEDS Point ID
Point Description
- Operating Schedule
3.2.3 Segment Information
Standard Classification Codes (SCC)
- Process Rates (units)
- Control Equipment
- Control Efficiency
- Emission Estimation Methods
The temporally allocated emissions
3.3 Area Source Requirements
Source categories included in the inventory.
The methods used to estimate emissions for each source
category, including the activity level and emission factor.
- The temporally allocated emissions
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4.0 References
1. Guidelines For Air Quality Maintenance Planning And Analysis
Volume 9 (Revised): Evaluating Indirect Sources. EPA-450/4-78-001,
U. S. Environmental Protection Agency, Research Triangle Park, NC,
September 1978.
2. CALINE3 - A Versatile Dispersion Model For Predicting Air
Pollutant Levels Near Highways And Arterial Streets. FHWA/CA/TL-79/23,
Federal Highway Administration, Washington, DC, November 1979.
3. User's Guide For RAM - Second Edition. EPA-600/8-87-046,
U. S. Environmental Protection Agency, Research Triangle Park, NC,
October 1987.
4. SAI Airshed Model Operations Manuals,, Volume I: User/s
Manual. EPA-600/8-85-007a, U. S. Environmental Protection Agency,
Research Triangle Park, NC, March 1985.
5. Procedures For Emission Inventory Preparation Volume IV:
Mobile Sources. EPA-450/4-81-026d (revised), U. S. Environmental
Protection Agency, Research Triangle Park, NC, December 1988.
6. User/s Guide To MOBILE4f U. S. Environmental Protection
Agency, Ann Arbor, MI, scheduled for February 1989, currently under
development.
7. Procedures For Emission Inventory Preparation. Volume II:
Point Sources. EPA-450/4-81-026b, U. S. Environmental Protection
Agency, Research Triangle Park, NC, September 1981.
8. Procedures For Emission Inventory Preparation. Volume III:
Area Sources. EPA-450/4-81-026c, U. S. Environmental Protection
Agency, Research Triangle Park, NC, September 1981.
9. Procedures For The Preparation Of Emission Inventories For
Volatile Organic Compounds. Volume II: Emission Inventory Requirements
For Photochemical Air Quality Simulation Models. EPA-450/4-79-018,
U. S. Environmental Protection Agency, Research Triangle Park, NC,
September 1979.
10. User's Guide To The SIP Air Emissions Inventory Management
System. U. S. Environmental Protection Agency, Research Triangle
Park, NC, currently under development.
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5.0 Supplemental Bibliography
1. Procedures For Emission Inventory Preparation. Volume I:
Emission Inventory Fundamentals. EPA—450/4—81—026a, U. S.
Environmental Protection Agency, Research Triangle Park, NC,
September 1981.
2. Procedures For Emission Inventory Preparation. Volume V:
Bibliography. EPA-450/4-81-026e, U. S. Environmental Protection
Agency, Research Triangle Park, NC, September 1981.
3. Procedures For The Preparation Of Emission Inventories For
Precursors Of Ozone. Volume I EPA-450/4-88-021, U. S. Environmental
Protection Agency, Research Triangle Park, NC, December 1988.
4. Compilation Of Air Pollution Emission Factors. Volume I:
Stationary Point And Area Sources. Fourth Edition and subsequent
supplements, AP-42, U. S. Environmental Protection Agency, Research
Triangle Park, NC, September 1985.
5. Compilation Of Air Pollutant Emission Factors. Volume II:
Mobile Sources. Fourth Edition, AP-42, U. S. Environmental Protection
Agency, Ann Arbor, MI, September 1985.
6. Criteria Pollutant Emission Factors For The 1985 NAPAP
Inventory. EPA-600/7-87-015, U. S. Environmental Protection Agency,
Research Triangle Park, NC, May 1987.
7 r Guidelines For Review Of Highway Source Emission Inventories
For 1982 State Implementation Plans. EPA-400/12-80-002, U. S.
Environmental Protection Agency, Washington, DC, December 1980.
8. Example Emission Inventory Documentation For 1982 Ozone
State Implementation Plans (SIPs). EPA-450/4-80-033, U. S.
Environmental Protection Agency, Research Triangle Park, NC,
March 1981.
9. Techniques For Estimating MOBILE2 Variables and Additional
Techniques For Estimating MOBILE2 Variables f PB 83183277, National
Technical Information Service, Springfield, VA, 1980.
10. Guideline On Air Quality Models (Revised') .
EPA-450/2-78-027R, U. S. Environmental Protection Agency, Research
Triangle Park, NC, July 1986.
11. Guidance For The Preparation Of Quality Assurance Plans For
CX/CO SIP Emission Inventories. EPA-450/4-88-023, U. S. Environmental
Protection Agency, Research Triangle Park, NC 27711, December 1988.
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TECHNICAL REPORT DATA
(Please read Instructions on the reverse before completing)
1. REPORT NO.
EPA-450/4-88-020
3. RECIPIENT'S ACCESSION NO.
4. TITLE AND SUBTITLE
5. REPORT DATE
Emission Inventory Requirements For Post-1987
Carbon Monoxide State Implementation Plans
IQflfl
6. PERFORMING ORGANIZATION COOE
7. AUTHOR(S)
Thomas N. Braverman
8. PERFORMING ORGANIZATION REPORT NO.
9. PERFORMING ORGANIZATION NAME AND ADDRESS
Monitoring And Reports Branch
Technical Support Division
Office Of Air Quality Planning And Standards
Research Triangle, NC 27711
10. PROGRAM ELEMENT NO.
11. CONTRACT/GRANT NO.
12. SPONSORING AGENCY NAME AND ADDRESS
13. TYPE OF REPORT AND PERIOD COVERED
14. SPONSORING AGENCY COOE
15. SUPPLEMENTARY NOTES
16. ABSTRACT
This document describes the final emission inventory requirements related to
preparation and submission of post-1987 carbon novnoxide State Implementation Plans
(SIPs) for those States required to revise their plans after December 31, 1987.
Discussed in the document are emission inventory requirements relating to
geographic area of coverage, point source cutoff size specifications, sources to be
included, data reporting formats, documentation requirements, quality of data base,
years to be addressed, and schedule for inventory submission.
17.
KEY WORDS AND DOCUMENT ANALYSIS
DESCRIPTORS
b.lOENTIFIERS/OPEN ENDED TERMS C. COSATI Field/Group
18. DISTRIBUTION STATEMENT
19. SECURITY CLASS (Tliis Report•) 121. NO. OF PAGES
20. SECURITY CLASS (Tllispage)
22. PRICE
EPA Form 2220-1 (R»v. 4-77) PREVIOUS COITION is OBSOLETE
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