Form D6 "Modeling Protocol Checklist" - North Carolina

What Is Form D6?

This is a legal form that was released by the North Carolina Department of Environmental Quality - a government authority operating within North Carolina. As of today, no separate filing guidelines for the form are provided by the issuing department.

Form Details:

  • Released on September 22, 2016;
  • The latest edition provided by the North Carolina Department of Environmental Quality;
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  • Fill out the form in our online filing application.

Download a fillable version of Form D6 by clicking the link below or browse more documents and templates provided by the North Carolina Department of Environmental Quality.

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FORM D6
NORTH CAROLINA MODELING PROTOCOL CHECKLIST (2 Pages)
D6-1
REVISED 09/22/16
NCDEQ/Division of Air Quality - Application for Air Permit to Construct/Operate
The North Carolina Modeling Protocol Checklist may be used in lieu of developing the traditional written modeling plan for North Carolina toxics and criteria pollutant
modeling. The protocol checklist is designed to provide the same level of information as requested in a modeling protocol as discussed in Chapter 2 of the Guideline for
Evaluating the Air Quality Impacts of Toxic Pollutants in North Carolina . The modeling protocol checklist is submitted with the modeling analysis. The above
referenced Guideline can be found at the following web link:
https://ncdenr.s3.amazonaws.com/s3fs-public/Air%20Quality/permits/mets/Guidance.pdf
Although most of the information requested in the modeling protocol checklist is self-explanatory, additional comments are provided, where applicable, and are discussed in
greater detail in the toxics modeling Guideline referenced above. References to sections, tables, figures, appendices, etc., in the protocol checklist are found in the toxics
modeling Guideline .
INSTRUCTIONS: The modeling report supporting the compliance demonstration should include most of the information listed below. As appropriate, answer the following
questions or indicate by check mark the information provided or action taken is reflected in your report.
FACILITY INFORMATION
Facility Name:
Consultant (if applicable):
Facility ID:
Address:
Contact Name:
Contact Name:
Phone Number:
Phone Number:
Email Address:
Email Address:
GENERAL INFORMATION
Included
Description of New Source or Source/Process Modification: Provide a short description of the new or modified source(s) and a brief
discussion of how this change affects facility production or process operation.
N/A
Source/Pollutant Identification: Provide a table of the affected pollutants, by source, which identifies the source type (point, area, or volume),
Included
maximum pollutant emission rates over the applicable averaging period(s), and, for point sources, indicate if the stack is capped or non-vertical
(C/N).
Included
Pollutant Emission Rate Calculations: Indicate how the pollutant emission rates were derived (e.g. AP-42 emission factors, mass balance, etc.)
and where applicable, provide the calculations
N/A
Site/Facility Diagram: Provide a diagram or drawing showing the location of all existing and proposed emission sources, buildings or structures,
Included
public right-of-ways, and the facility property (toxics)/fence line (criteria pollutants) boundaries. The diagram should also include a scale, true north
indicator, and the UTM or latitude/longitude of at least one point.
Certified Plat or Signed Survey: a certified plat (map) from the County Register of Deeds or a signed survey must be submitted to validate
Included
property boundaries modeled.
Included
Topographic Map: a topographic map covering approximately 5 km around the facility must be submitted. The facility boundaries should be
annotated on the map as accurately as possible.
N/A
Included
Cavity Impact Analysis: no cavity analysis is required if using AERMOD. See Section 4.2
N/A
Background Concentrations (criteria Pollutant analyses only): Background concentrations must be determined for each pollutant for each
Included
averaging period evaluated. The averaged background value used (e.g. high, high-second-high, high-third-high, etc.) is based on the pollutant
and averaging period evaluated. The background concentrations are added to the modeled concentrations, which are then compared to the
applicable air quality standard to determine compliance.
N/A
Included
Offsite Source Inventories (criteria pollutant analyses only): Offsite source inventories must be developed and modeled for all pollutants for
which onsite source emissions are modeled in excess of the specific pollutant significant impact levels (SILs) as defined in the PSD New Source
Review Workshop Manual. The DAQ AQAB must approve the inventories. An initial working inventory can be requested from the AQAB.
N/A
Attach Additional Sheets as Necessary
Page 1 of 2
FORM D6
NORTH CAROLINA MODELING PROTOCOL CHECKLIST (2 Pages)
D6-1
REVISED 09/22/16
NCDEQ/Division of Air Quality - Application for Air Permit to Construct/Operate
The North Carolina Modeling Protocol Checklist may be used in lieu of developing the traditional written modeling plan for North Carolina toxics and criteria pollutant
modeling. The protocol checklist is designed to provide the same level of information as requested in a modeling protocol as discussed in Chapter 2 of the Guideline for
Evaluating the Air Quality Impacts of Toxic Pollutants in North Carolina . The modeling protocol checklist is submitted with the modeling analysis. The above
referenced Guideline can be found at the following web link:
https://ncdenr.s3.amazonaws.com/s3fs-public/Air%20Quality/permits/mets/Guidance.pdf
Although most of the information requested in the modeling protocol checklist is self-explanatory, additional comments are provided, where applicable, and are discussed in
greater detail in the toxics modeling Guideline referenced above. References to sections, tables, figures, appendices, etc., in the protocol checklist are found in the toxics
modeling Guideline .
INSTRUCTIONS: The modeling report supporting the compliance demonstration should include most of the information listed below. As appropriate, answer the following
questions or indicate by check mark the information provided or action taken is reflected in your report.
FACILITY INFORMATION
Facility Name:
Consultant (if applicable):
Facility ID:
Address:
Contact Name:
Contact Name:
Phone Number:
Phone Number:
Email Address:
Email Address:
GENERAL INFORMATION
Included
Description of New Source or Source/Process Modification: Provide a short description of the new or modified source(s) and a brief
discussion of how this change affects facility production or process operation.
N/A
Source/Pollutant Identification: Provide a table of the affected pollutants, by source, which identifies the source type (point, area, or volume),
Included
maximum pollutant emission rates over the applicable averaging period(s), and, for point sources, indicate if the stack is capped or non-vertical
(C/N).
Included
Pollutant Emission Rate Calculations: Indicate how the pollutant emission rates were derived (e.g. AP-42 emission factors, mass balance, etc.)
and where applicable, provide the calculations
N/A
Site/Facility Diagram: Provide a diagram or drawing showing the location of all existing and proposed emission sources, buildings or structures,
Included
public right-of-ways, and the facility property (toxics)/fence line (criteria pollutants) boundaries. The diagram should also include a scale, true north
indicator, and the UTM or latitude/longitude of at least one point.
Certified Plat or Signed Survey: a certified plat (map) from the County Register of Deeds or a signed survey must be submitted to validate
Included
property boundaries modeled.
Included
Topographic Map: a topographic map covering approximately 5 km around the facility must be submitted. The facility boundaries should be
annotated on the map as accurately as possible.
N/A
Included
Cavity Impact Analysis: no cavity analysis is required if using AERMOD. See Section 4.2
N/A
Background Concentrations (criteria Pollutant analyses only): Background concentrations must be determined for each pollutant for each
Included
averaging period evaluated. The averaged background value used (e.g. high, high-second-high, high-third-high, etc.) is based on the pollutant
and averaging period evaluated. The background concentrations are added to the modeled concentrations, which are then compared to the
applicable air quality standard to determine compliance.
N/A
Included
Offsite Source Inventories (criteria pollutant analyses only): Offsite source inventories must be developed and modeled for all pollutants for
which onsite source emissions are modeled in excess of the specific pollutant significant impact levels (SILs) as defined in the PSD New Source
Review Workshop Manual. The DAQ AQAB must approve the inventories. An initial working inventory can be requested from the AQAB.
N/A
Attach Additional Sheets as Necessary
Page 1 of 2
SCREEN LEVEL MODELING
D6-2
AERSCREEN Version
Model: The latest version of the AERSCREEN model must be used. The use of other screening models should be approved by NCDAQ prior to
submitting the modeling report.
Source/Source Emission Parameters: Provide a table listing the sources modeled and the applicable source emission parameters. See NC
Form 3 - Appendix A.
Merged Sources: Identify merged sources and show all appropriate calculations. See Section 3.3
GEP Analysis: See Section 3.2 and NC Form 1 - Appendix A
Terrain: Indicate the terrain modeled: simple (Section 4.4), and complex (Section 4.5 and NC Form 4 -- Appendix A). If complex terrain is within
Simple
5 kilometers of the facility, complex terrain must be evaluated. Simple terrain must include terrain elevations if any terrain is greater than the stack
base of any source modeled. Mark the appropriate terrain type.
Complex
Meteorology: Refer to Section 4.1 for AERSCREEN inputs.
Receptors: AERSCREEN - use shortest distance to property boundary for each source modeled and use sufficient range to find maximum [See
Section 4.1(i) and (j)]. Terrain above stack base must be evaluated.
Modeling Results: For each affected pollutant, modeling results should be summarized, converted to the applicable averaging period (See Table
3), and presented in tabular format indicating compliance status with the applicable AAL, SIL, or NAAQS. See NC Form S5 - Appendix A.
Electronic
Modeling Files: Either electronic or hard copies of AERSCREEN output must be submitted.
Hard Copy
REFINED LEVEL MODELING
AERMOD Version
Model: The latest version of AERMOD should be used. The use of other refined models must be approved by NCDAQ prior to submitting the
modeling report.
The latest version of AERMOD may be found at the following web address:
http://www.epa.gov/scram001/dispersion_prefrec.htm
Source/Source Emission Parameters: Provide a table listing the sources modeled and the applicable source emission parameters. See NC
Form 3 - Appendix A.
GEP Analysis: Use BPIP-Prime with AERMOD.
Cavity Impact Analysis: No separate cavity analysis is required when using AERMOD as long as receptors are placed in cavity susceptible
areas. See Section 4.2 and 5.2.
USGS NED
Terrain: Use digital elevation data from the USGS NED database. Use of other sources of terrain elevations or the non-regulatory Flat Terrain
option will require prior approval from DAQ AQAB.
Other
The USGS NED database can be found at the following web address:
http://viewer.nationalmap.gov/launch/
Coordinate System:
Coordinate System: Specify the coordinate system used (e.g. NAD27, NAD83, etc.) to identify the source, building, and receptor locations.
Note: Be sure to specify in the AERMAP input file the correct base datum (NADA) to be used for identifying source input data locations. Clearly
note in both the protocol checklist and the modeling report which datum was used.
Receptors: The receptor grid should be of sufficient size and resolution to identify the maximum pollutant impact. See Section 5.3.
Data Set Used:
Meteorology: Indicate the AQAB, pre-processed, 5-year data set used in the modeling demonstration: See Section 5.5 and Appendix B)
AERMOD Version:
If processing your own raw meteorology, then pre-approval from AQAB is required. Additional documentation files (e.g. AERMET state processing
files) will also be necessary. For NC toxics, the modeling demonstration requires only the last year of the standard 5-year data set (e.g. 2005)
provided the maximum impacts are less than 50% of the applicable AAL(s).
Modeling Results: For each affected pollutant and averaging period, modeling results should be summarized and presented in tabular format
indicating compliance status with the applicable AAL, SIL, or NAAQS. See NC Form R5 - Appendix A.
Modeling Files: Submit input and output files for AERMOD. Also include BPIP-Prime files, AERMAP files, DEM files, and any AERMET input and
output files, including raw meteorological data.
Attach Additional Sheets as Necessary
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