5900-248 Application for New Construction

OMB Control No.2060-0003
Approval expires 01/31/202x
United States Environmental Protection Agency
Program Address
Phone
Fax
Web address

Reviewing Authority
Program Address
Phone
Fax
Web address

FEDERAL MINOR NEW SOURCE REVIEW PROGRAM IN INDIAN COUNTRY

Application for New Construction
(Form NEW)

NOTE: Please check either Proposed Construction of a New Facility or one or more of the
other choices to show how you are using this form.
Proposed Construction of a New Facility
OR one or more of the following:
Proposed Construction of New Equipment at an Existing Facility
Proposed Modification of Existing Equipment at an Existing Facility
Other – Please Explain

Please submit information to the following
two entities:

[Reviewing Authority
Address
Phone]

The Tribal Environmental Contact for the specific
reservation:
If you need assistance in identifying the appropriate Tribal
Environmental Contact and address, please contact your
EPA Regional Office

A. GENERAL FACILITY INFORMATION
1. (a) Company Name (Who owns this facility?

2. Facility Name

(b) Operator Name (If a different company than the
company that owns this facility)

3. Type of Operation

4. Portable Source?
5. Temporary Source?

6. NAICS Code

7. SIC Code

Yes
Yes

No
No

8. Physical Address (Or home base for portable sources)
9. Reservation*

10. County*

11a. Latitude
(decimal format)*

11b. Longitude
(decimal format)*

12a. Quarter Quarter Section*

12b. Section*

12c. Township*

12d. Range*

*Provide all proposed locations of operation for portable sources

EPA Form No. 5900-248

OMB Control No. 2060-0003
Approval expires 01/31/202x
B. PREVIOUS PERMIT ACTIONS (Provide information in this format for each permit that has
been issued to this source. Provide as an attachment if additional space is necessary)
Facility Name on the Permit

Permit Number (xx-xxx-xxxxx-xxxx.xx)
Date of the Permit Action

Facility Name on the Permit
Permit Number (xx-xxx-xxxxx-xxxx.xx)
Date of the Permit Action

Facility Name on the Permit
Permit Number (xx-xxx-xxxxx-xxxx.xx)
Date of the Permit Action

Facility Name on the Permit
Permit Number (xx-xxx-xxxxx-xxxx.xx)
Date of the Permit Action

Facility Name on the Permit
Permit Number (xx-xxx-xxxxx-xxxx.xx)
Date of the Permit Action

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OMB Control No. 2060-0003
Approval expires 01/31/202x

C. CONTACT INFORMATION

Company Contact (Who is the primary contact for the company that owns this facility?)

Title

Mailing Address
Email Address
Telephone Number

Facsimile Number

Operator Contact (Is the company that operates this facility different than the company
that owns this facility? Who is the primary contact for the company that operates this
facility?)

Title

Mailing Address
Email Address
Telephone Number

Facsimile Number

Permitting Contact (Who is the person primarily responsible for Clean Air Act

permitting for the company? We are seeking one main contact for the company. Please do
not list consultants.)

Title

Mailing Address
Email Address
Telephone Number

Facsimile Number

Compliance Contact (Is the person responsible for Clean Air Act compliance for this
company different than the person responsible for Clean Air Act permitting? Who is the
person primarily responsible for Clean Air Act compliance for the company? We are
seeking one main contact for the company. Please do not list consultants.)

Title

Mailing Address
Email Address
Telephone Number

EPA Form No. 5900-248

Facsimile Number

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D. ATTACHMENTS

OMB Control No. 2060-0003
Approval expires 01/31/202x

Include all of the following information (see the attached instructions)
*Please do not send Part 71 Operating Permit Application Forms in lieu of the check list below.
FORM SYNMIN - New Source Review Synthetic Minor Limit Request Form, if synthetic minor limits are
being requested.
Narrative description of the proposed production processes. This description should follow the flow of the
process flow diagram to be submitted with this application.
Process flow chart identifying all proposed processing, combustion, handling, storage, and emission control
equipment.

A list and descriptions of all proposed emission units and air pollution-generating activities.
Type and quantity of fuels, including sulfur content of fuels, proposed to be used on a daily, annual and
maximum hourly basis.
Type and quantity of raw materials used or final product produced proposed to be used on a daily, annual and
maximum hourly basis.
Proposed operating schedule, including number of hours per day, number of days per week and number of weeks
per year.
A list and description of all proposed emission controls, control efficiencies, emission limits, and monitoring for
each emission unit and air pollution generating activity.
A table of all applicable emission point parameters and locations associated with each emission unit or emission
generating activity under normal operating conditions, including stack height, stack diameter, exit temperature,
exit velocity, latitude and longitude.
Criteria Pollutant Emissions - Estimates of Current Actual Emissions, Current Allowable Emissions, PostChange Uncontrolled Emissions, and Post-Change Allowable Emissions for the following air pollutants:
particulate matter, PM10, PM2.5, sulfur oxides (SOx), nitrogen oxides (NOx), carbon monoxide (CO), volatile
organic compound (VOC), lead (Pb) and lead compounds, fluorides (gaseous and particulate), sulfuric acid
mist (H2SO4), hydrogen sulfide (H2S), total reduced sulfur (TRS) and reduced sulfur compounds, including
all calculations for the estimates.
These estimates are to be made for each emission unit, emission generating activity, and the project/source in
total. Note: There are no insignificant emission units or activities in this permitting program, only exempted
units and activities. Please see the regulation at 40 CFR 49.153(c) for a list of exempted units and activities.
Air Quality Review
ESA (Endangered Species Act)
NHPA (National Historic Preservation Act)

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E. TABLE OF ESTIMATED EMISSIONS

OMB Control No. 2060-0003
Approval expires 01/31/202x

The following tables provide the total emissions in tons/year for all pollutants from the calculations
required in Section D of this form, as appropriate for the use specified at the top of the form.
E(i) – Proposed New Facility
Pollutant

Potential Emissions
(tpy)

PM
PM10
PM2.5
SOx
NOx
CO
VOC
Pb
Fluorides
H2SO4
H 2S
TRS

Proposed Allowable
Emissions
(tpy)
PM - Particulate Matter
PM10 - Particulate Matter less than
10 micrometers in size
PM2.5 - Particulate Matter less than
2.5 micrometers in size
SOx - Sulfur Oxides
NOx - Nitrogen Oxides
CO - Carbon Monoxide
VOC - Volatile Organic
Compound
Pb - Lead and lead compounds
Fluorides - Gaseous and
particulates
H2SO4 - Sulfuric Acid Mist
H2S - Hydrogen Sulfide
TRS - Total Reduced Sulfur
RSC - Reduced Sulfur
Compounds

RSC

Emissions calculations must include fugitive emissions if the source is one the following listed
sources, pursuant to CAA Section 302(j):
(a) Coal cleaning plants (with thermal dryers);
(b) Kraft pulp mills;
(c) Portland cement plants;
(d) Primary zinc smelters;
(e) Iron and steel mills;
(f) Primary aluminum ore reduction plants;
(g) Primary copper smelters;
(h) Municipal incinerators capable of charging more than
250 tons of refuse per day;
(i) Hydrofluoric, sulfuric, or nitric acid plants;
(j) Petroleum refineries;
(k) Lime plants;
(l) Phosphate rock processing plants;
(m) Coke oven batteries;
(n) Sulfur recovery plants;
(o) Carbon black plants (furnace process);
(p) Primary lead smelters;
(q) Fuel conversion plants;

EPA Form No. 5900-248

(r) Sintering plants;
(s) Secondary metal production plants;
(t) Chemical process plants
(u) Fossil-fuel boilers (or combination thereof) totaling
more than 250 million British thermal units per hour
heat input;
(v) Petroleum storage and transfer units with a total
storage capacity exceeding 300,000 barrels;
(w) Taconite ore processing plants;
(x) Glass fiber processing plants;
(y) Charcoal production plants;
(z) Fossil fuel-fired steam electric plants of more that
250 million British thermal units per hour heat input,
and
(aa) Any other stationary source category which, as of
August 7, 1980, is being regulated under section 111 or
112 of the Act.

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OMB Control No. 2060-0003
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E(ii) – Proposed New Construction at an Existing Facility or Modification of Existing Equipment at
an Existing Facility
Current
Current
Post-Change
Post-Change
Actual
Allowable
Potential
Allowable
Pollutant
Emissions
Emissions
Emissions
Emissions
(tpy)
(tpy)
(tpy)
(tpy)
PM
PM10
PM 2.5
SOx
NOx
CO
VOC
Pb
Fluorides
H2SO4
H 2S
TRS
RSC
PM - Particulate Matter
PM10 - Particulate Matter less than 10 microns in size
PM2.5 - Particulate Matter less than 2.5 microns in size SOx - Sulfur Oxides
NOx - Nitrogen Oxides
CO - Carbon Monoxide
VOC - Volatile Organic Compound
Pb - Lead and lead compounds
Fluorides - Gaseous and particulates
H2SO4 - Sulfuric Acid Mist
H2S - Hydrogen Sulfide
TRS - Total Reduced Sulfur
RSC - Reduced Sulfur Compounds

[Disclaimers] The public reporting and recordkeeping burden for this collection of information is
estimated to average 20 hours per response, unless a modeling analysis is required. If a modeling
analysis is required, the public reporting and recordkeeping burden for this collection of information
is estimated to average 60 hours per response .Send comments on the Agency’s need for this
information, the accuracy of the provided burden estimates, and any suggested methods for
minimizing respondent burden, including through the use of automated collection techniques to the
Director, Collection Strategies Division, U.S. Environmental Protection Agency (2822T), 1200
Pennsylvania Ave., NW, Washington, D.C. 20460. Include the OMB control number in any
correspondence. Do not send the completed form to this address.

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Instructions

OMB Control No. 2060-0003
Approval expires 01/31/202x

(Please do not include a copy of these instructions in the application you submit to us.)
Use of This Form
•

Proposed new construction or modifications should first be evaluated to determine if the change is
major under the major NSR program using the procedures at 40 CFR 52.21 (i.e., baseline actual to
projected actual applicability test). If the proposed construction does not qualify as a major under
that test, then it may be subject to the requirements of the minor NSR rule at 40 CFR 49.151.

Helpful Definitions from the Federal Minor NSR Rule (40 CFR 49) – This is not a comprehensive list.
•

40 CFR 49.152(d) - Modification means any physical or operational change at a source
that would cause an increase in the allowable emissions of the affected emissions units
for any regulated NSR pollutant or that would cause the emission of any regulated NSR
pollutant not previously emitted.
The following exemptions apply:
(1) A physical or operational change does not include routine maintenance, repair, or replacement.
(2) An increase in the hours of operation or in the production rate is not considered an operational
change unless such increase is prohibited under any federally-enforceable permit condition or
other permit condition that is enforceable as a practical matter.
(3) A change in ownership at a source is not considered a modification.

•

40 CFR 49.152(d) - Allowable emissions means ‘‘allowable emissions’’ as defined in §52.21(b)(16),
except that the allowable emissions for any emissions unit are calculated considering any emission limitations
that are enforceable as a practical matter on the emissions unit’s potential to emit.

•

52.21(b)(16) - Allowable emissions means the emissions rate of a stationary source calculated using
the maximum rated capacity of the source (unless the source is subject to federally enforceable limits
which restrict the operating rate, or hours of operation, or both) and the most stringent of the
following:
(i) The applicable standards as set forth in 40 CFR parts 60 and 61;
(ii) The applicable State Implementation Plan emissions limitation, including those with a future
compliance date; or
(iii) The emissions rate specified as a federally enforceable permit condition, including those with a
future compliance date.

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OMB Control No. 2060-0003
Approval expires 01/31/202x

A. General Facility Information
1. Company Name & Operator Name (if the operator of the facility is different than the owner, please provide this
information): Provide the complete company and operator names. For corporations, include divisions or
subsidiary name, if any.
2. Facility Name: Provide the facility name. Please note that a facility is a site, place, location, etc… that
may contain one or more air pollution emitting units.
3. Type of Operation: Indicate the generally accepted name for the operation (i.e., asphalt plant, gas station,
dry cleaner, sand & gravel mining, oil and gas wellsite, tank battery, etc.).
4. Portable Source: Will this facility operate in more than one location? Some examples of portable sources
include asphalt batch plants and concrete batch plants.
5. Temporary Source: A temporary source, in general, would have emissions that are expected last less than
12 months before ceasing operations permanently.
6. NAICS Code: North American Industry Classification System. The NAICS Code for your source can be
found at the following link  North American Industry Classification System
(https://www.census.gov/eos/www/naics/).
7. SIC Code: Standard Industrial Classification Code. Although the North American Industry Classification
System (NAICS) has replaced the SIC codes, much of the Clean Air Act permitting processes continue to
use these codes. The SIC Code for your source can be found at the following link  Standard Industrial
Classification Code (https://www.osha.gov/pls/imis/sic_manual.html).
8. Physical Address: Provide the actual address where the existing facility is operating or you are proposing
to construct the new facility, not the mailing address. Include the State and the ZIP Code.
9. Reservation: Provide the name of the Indian reservation within which the existing facility is operating or
the new facility will be constructed.
10. County: Provide the County within which the existing facility is operating or the new facility will be
constructed.
11. 11a & 11b. Latitude & Longitude: These are GPS (global positioning system) coordinates. Decimal
format is preferred.
12. 12a – 12d. Section-Township-Range: Please provide these coordinates in 1/4
Section/Section/Township/Range. (e.g., SW ¼, NE ¼ /S36/T10N/R21E).

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B. Current Permit Information

OMB Control No. 2060-0003
Approval expires 01/31/202x

Provide a list of all permits that have been issued to your source. This should include any Federal Minor
New Source Review (MNSR), Prevention of Significant Deterioration (PSD) or Nonattainment New
Source Review (NA NSR) permits, in addition to the most recent Part 71 permit. The permit number
must be included with each permit identified.

C. Contact Information
Please provide the information requested in full.
1. Company Contact: Provide the full name of the primary contact for the company that owns the facility.
2. Operator Contact: Provide the name of the primary contact for the company that operates the facility if
the company operating the facility is different from the company that owns the facility.
3. Permitting Contact: Provide the name of primary contact, for permitting decisions, at the company that
owns the facility or the company that operates the facility.
4. Compliance Contact: Provide the name of primary contact, responsible for compliance of the facility, at
the company that owns the facility or the company that operates the facility. If this is the same as the
Permitting Contact please note this on the form.

D. Attachments
This section lists the information needed to complete the requested approval. This information should be
accompanied by the supporting information listed on the form and described below. The information
should be presented in enough detail to document how the source is currently operating and/or how it is
proposed to operate.
 FORM SYNMIN
If synthetic minor limits are being requested, a synthetic Minor Limit Application should be included with
this application.
 Narrative description of the proposed production processes.
1. The narrative description should follow the flow of the process flow diagram to be submitted with
this application. This needs to be as comprehensive as possible to help in understanding the proposed
source and how it will be operated. For example:
What are the raw materials?
What are the properties of the raw materials?
Does the production process include heating, drying, the application of chemicals, etc? How will the raw
materials be affected by this process?
What are the out puts from each step of the process (i.e., crushed ore, dry gas, water, etc…)? Etc….

2. The proposed operating schedule presented in terms of hours per day, days per week, and weeks
per year.

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OMB Control No. 2060-0003
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3. A list of the type and quantity of fuels and/or raw materials used. Each fuel and raw material
should be described in enough detail to indicate its basic chemical components.
 A process flow chart identifying all proposed processing, combustion, handling, storage, and emission control
equipment. This flow chart should illustrate the detailed narrative description requested above.
 List and describe all proposed units, emission units and air pollution-generating activities. At a

minimum, provide the following:

1. The equipment make, model, product number, size, and capacity for each unit and activity.
2. The hourly, daily and annual maximum operating rates for each operating unit, production
process, and activity.
3. The hourly, daily and annual maximum firing rates for each fuel and combustion equipment.
4. The capacity for storage units and the hourly, daily and annual maximum throughput of material
in the storage units.
5. Material and product handling equipment and the hourly, daily and annual maximum throughput
of material and product.
6. Tank designs, tank storage capacities, hourly, daily and annual maximum throughput of material
and product.
 Type and quantity of fuels, including sulfur content of fuels, proposed to be used on a daily, annual and
maximum hourly basis.
 Type and quantity of raw materials used or final product produced proposed to be used on a daily, annual and
maximum hourly basis.
 Proposed operating schedule, including number of hours per day, number of days per week and number of
weeks per year.
 A list and description of all proposed emission controls, control efficiencies, emission limits, and monitoring
for each emission unit and air pollution generating activity.
Include manufacturer specifications and guarantees for each control device.
 A table of all applicable emission point parameters and locations associated with each emission unit or
emission generating activity under normal operating conditions, provided as follows:
1.
2.
3.
4.
5.

Stack height and stack diameter in meters.
Exit temperature in degrees Kelvin.
Exit velocity in meters per second.
Emission rates in tpy and grams per second.
Location latitude and longitude in decimal format or UTM w/ UTM Zone.

 Criteria Pollutant Emissions Estimates
As appropriate for the use of the application, estimates of Current Actual Emissions, Current
Allowable Emissions, Post-Change Uncontrolled Emissions, and Post-Change Allowable Emissions
for the following air pollutants: particulate matter, PM10, PM2.5, sulfur oxides (SOx), nitrogen oxides
(NOx), carbon monoxide (CO), volatile organic compound (VOC), lead (Pb) and lead compounds,
ammonia (NH3), fluorides (gaseous and particulate), sulfuric acid mist (H2SO4), hydrogen sulfide
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OMB Control No.2060-0003
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(H2S), total reduced sulfur (TRS) and reduced sulfur compounds, including all calculations for the
estimates.
1. These estimates are to be made for each emission unit, emission generating
activity, in addition to total emissions.
2. The information should include all of the supporting calculations,
assumptions and references. Emission estimates must address all
emission units and pollutants proposed and/or affected by the limitation
and be presented in short term (e.g. pounds per hour) as well as annual
(tons per year) units.
3. Any emission estimates submitted to the Regional Administrator must
be verifiable using currently accepted engineering criteria. The
following procedures are generally acceptable for estimating
emissions from air pollution sources:
•
•
•
•
•

Unit-specific emission tests;
Mass balance calculations;
Published, verifiable emission factors that are applicable to the source (i.e. manufacturer
specifications);
Other engineering calculations; or
Other procedures to estimate emissions specifically approved by the Regional
Administrator.

4. Guidance for estimating emissions can be found at https://www.epa.gov/air-emissions-factorsand-quantification.
Current Actual Emissions: Current actual emissions for a pollutant is expressed in tpy and generally
is calculated by multiplying the actual hourly emissions rate in pounds per hour (lbs/hr) times actual
hours operated (which is the number of hours in a year) and dividing by 2,000 (which is the number
of pounds in a ton).
For an existing air pollution source (permitted and unpermitted) that operated prior to the
application submittal, the current actual emissions are the actual rate of emissions for the
preceding calendar year and must be calculated using the actual operating hours, production
rates, in-place control equipment, and types of materials processed, stored, or combusted during
the preceding calendar year. The emission estimates must be based upon actual test data or, in
the absence of such data, upon procedures acceptable to the Regional Administrator.
Current Allowable Emissions: Current allowable emissions for a pollutant is expressed in tpy and
generally is calculated by multiplying the allowed hourly emissions rate in pounds per hour (lbs/hr)
times allowed hours (which is the number of hours in a year) and dividing by 2,000 (which is the
number of pounds in a ton).
1. “Allowed” means the source is restricted by permit conditions that limit its emissions and are
enforceable as a practical matter (i.e., allowable emissions). The allowable emissions for any

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OMB Control No. 2060-0003
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emissions unit are calculated considering any emissions limitations that are enforceable as a
practical matter on the unit’s PTE.
2. For an existing permitted air pollution source that operated prior to the application submittal, the

current allowable emissions are the allowable rate of emissions for the preceding calendar year and
must be calculated using the permitted operating hours, production rates, in-place control equipment,
and types of materials processed, stored, or combusted during the preceding calendar year.

3. For an existing air pollution source that does not have an established allowable emissions
level prior to the modification must report the pre-change uncontrolled emissions.
Post-Change Potential Emissions (Potential uncontrolled emissions from proposed project): This is
the maximum capacity of a source to emit a pollutant under its physical and operational design.
This is expressed in tpy and generally is calculated by multiplying the maximum hourly emissions
rate in pounds per hour (lbs/hr) times 8,760 hours (which is the number of hours in a year) and
dividing by 2,000 (which is the number of pounds in a ton).
Post-Change Allowable Emissions: A source’s allowable emissions for a pollutant is expressed in
tpy and generally is calculated by multiplying the allowed hourly emissions rate in pounds per hour
(lbs/hr) times allowed hours (which is the number of hours in a year) and dividing by 2,000 (which
is the number of pounds in a ton).
1. Unless the source is restricted by permit conditions or other requirements that are enforceable
as a practical matter, the post-change allowable emissions would be equivalent to postchange uncontrolled emissions. For the post-change allowable emissions a lower level of
allowable emissions may be proposed.
2. For physical or operational changes at minor sources and for minor physical or operational
changes at major sources, the total increase in allowable emissions resulting from your
proposed change would be the sum of following:
•

For each new emissions unit that is to be added, the emissions increase would be the
potential to emit of each unit.

•

For each emissions unit with an allowable emissions limit that is to be changed or
replaced, the emissions increase would be the allowable emissions of the emissions unit
after the change or replacement minus the allowable emissions prior to the change or
replacement. However, this may not be a negative value. If the allowable emissions of
an emissions unit would be reduced as a result of the change or replacement, use zero in
the calculation.

•

For each unpermitted emissions unit (i.e., a unit without any emissions limitations
before the change) that is to be changed or replaced, the emissions increase would be the
allowable emissions of the unit after the change or replacement minus the potential to
emit prior to the change or replacement. However, this may not be a negative value. If
the allowable emissions of an emissions unit would be reduced as a result of the change
or replacement, use zero in the calculation.

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 Air Quality Review
Qualitative Air Quality Assessment
Provide a narrative description of the current air quality conditions and the expected impact the
permitted source would have on that air quality. Factors to include in the qualitative discussion are
meteorology, terrain, elevation, distance to ambient air, expected emissions, stack heights, etc. Your
reviewing authority may require you to provide additional information used to determine impacts
that may result from your new source or modification.

Do I need to do a modeling analysis?
If there is reason to be concerned that new construction would cause or contribute to a National
Ambient Air Quality Standard (NAAQS) or Prevention of Significant Deterioration (PSD) increment
violation, you may be required to conduct and submit an Air Quality Impact Analysis (AQIA)
consistent with the requirements and recommendations of the Guideline on Air Quality Models
(Appendix W to 40 CFR Part 51). In addition, if the AQIA reveals that the new construction could
cause or contribute to a NAAQS or PSD increment violation, such impacts must be reduced before a
pre-construction permit can be issued.
To facilitate the protection of the NAAQS and PSD Increment, EPA requests that those proposed
activities that meet the following criteria perform an AQIA:
1. The proposed activity has air emissions that the Reviewing Authority determines has the
potential to cause adverse air quality effects for which an air quality impact analysis is
necessary for an accurate assessment of the environmental impact of the activities proposed.
2. Modeling of proposed emissions is usually warranted, even though the proposed activity does
not meet the modeling requirements, above, if it is reasonable to believe the new activity may
cause or contribute to a violation of applicable ambient air quality standards or increments in
circumstances such as:
(a) A substantial portion of the new or modified emissions have poor dispersion
characteristics (e.g., rain caps, horizontal stacks, fugitive releases, or building
downwash) in close proximity to ambient air at the site boundary;
(b) The new or modified emissions are located in complex terrain (e.g., terrain above stack
height in close proximity to the source); or
(c) The new or modified emissions are located in areas with existing air quality concerns.
(d) If you have questions about whether modeling may be necessary based on the criteria
above, please contact the Reviewing Authority:
[Reviewing Authority
Address
Phone]

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What Kind of Air Quality Modeling Analysis (AQIA) Is Needed?
1. EPA considers a stepped or phased approach to modeling to be appropriate, as follows:
Step 1: Screening Analysis
Step 2: Single-Source Impact Analysis, per Appendix W, Section 9.2.3.a.i.
Step 3: Cumulative Impact Analysis, per Appendix W, Section 9.2.3.a.ii.
Step 4: PSD Increment and NAAQS Analysis
Step 6: Additional Impact Analysis
2. Step 1: Screening Analysis
For proposed new or modified sources that meet the modeling requirement criteria identified
above, protection of air quality from proposed emissions may be shown by using a simple
screening technique Screening models are available for download at the EPA SCRAM website:
https://www.epa.gov/scram/air-quality-dispersion-modeling-screening-models. A pre-approved
modeling protocol is not necessary prior to conducting a Screening Analysis.
3. If the proposed new or modified emission increases do not increase ambient concentrations of a
pollutant by more than the significant impact levels (SILs), as compared to the SILs identified
below, no further modeling is necessary.
Significant Impact Levels
Pollutant
Averaging Period

3 ppb or 7.8 ug/m3 (interim)
25
5
1

Class I Area SIL
(ug/m3)

SO2

1 hr
3 hr
24 hr
Annual

Class II Area SIL
(ug/m3)

O3

8-hour

1.0 ppb

1.0 ppb

24 hr
Annual
24 hr
Annual
1 hr
Annual
1 hr
8 hr

1.2
0.2
5
1
4 ppb or 7.5 ug/m3 (interim)
1
2,000 ppb
500 ppb

0.27
0.2
0.2
0.08
---0.08

PM2.5
PM10
NO2
CO

---1.0
0.2
0.08

Note: The Class I area SILs are provided as guidance and have not been formalized by EPA.

4. Sources that cannot demonstrate protection of air quality using a screening technique should
continue to the modeling requirements in Step 2 through Step 5. Modeling in Steps 2 through 5
should be performed based an approved protocol and consistent with the requirements and
recommendations of the Guideline on Air Quality Models (Appendix W to 40 CFR Part 51).
5. Applicants are encouraged to contact the Reviewing Authority prior to conducting any refined
modeling analysis (Step 2 through Step 5) to obtain an approved modeling protocol.
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What Should I Include in My Application if Modeling Is Necessary?
1. Approved Modeling Protocol
In order to expedite the permitting process, it is recommended that you include a protocol that
has already been approved. An application will not be deemed complete until the protocol has
been approved.
2. Modeling Results
In all cases, the modeling results should include the name of the model used, all input
parameters, and the resulting output. Electronic copies of the modeling input/output files should
be provided to the Reviewing Authority.

 ESA
The Endangered Species Act requires us, in consultation with the U.S. Fish and Wildlife Service
and/or the NOAA Fisheries Service, to ensure that actions we authorize are not likely to jeopardize
the continued existence of any listed species or result in the destruction or adverse modification of
designated critical habitat of such species.
To expedite the approval of your proposed construction, we encourage you to identify any listed
species that you may be readily aware of that could be affected by your proposal. The following
website has been provided to assist you: http://www.fws.gov/endangered/
Simply enter the State and County in which you propose to construct to obtain a general listing.

 NHPA
The National Historic Preservation Act requires us, in consultation with State and/or Tribal Historic
Preservation Officers to ensure that actions we authorize are not likely to affect cultural resources.
To expedite the approval of your proposed construction, we encourage you to identify any cultural
resources that you may be readily aware of that could be affected by your proposal. The following
website has been provided to assist you: https://www.nps.gov/subjects/nationalregister/datadownloads.htm.

EPA Form No. 5900-248

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