Preparing for an Air Modeling e-Service submittal

To help make your e-Service submittal go as smoothly as possible, below are some things you'll need to have ready before you begin.

The first step for a facility to submit an Air Modeling e-Service is for the Responsible Official or other delegated qualified staff to sign up for an e-Services account and request Air Signatory access for their facility. In order to set up Air Signatory permissions, the responsible official, and if applicable, the delegated staff, will need to fill out the DG-02 form below:

(Note: If an Air Signatory has already been set up for another air e-Service, the DG-02 form does not need to be resubmitted for the Air Signatory to gain access to the air modeling e-Service.) Once the form is signed and dated, it should be submitted to the Air Permit Document Coordinator at MPCA’s Saint Paul office as noted in Section E of the DG-02. 

Before sending in the form, you need to request Air Signatory access to the given facility within e-Services by using the “Add Facilities” option on the My Workspace page, under the My Facilities section. As part of the steps for requesting access, you will be told to printout, sign, and mail in DG-02. After hitting Continue on the Access Change screen, your online request will be listed as Pending in My Workspace until you mail in the DG-02 form and it is processed by the MPCA.

Once access is granted by the MPCA, the Air Signatory will receive an email confirming they’ve received access to their facility in e-Services. In addition, on the My Workspace page, the Access Status column in the My Facilities section will change from Pending to Granted. At that point, if the facility has a modeling consultant that will be completing the e-Service, the Air Signatory should ask their consultant to set up an account in e-Services.  While setting up their account, the consultant would request access to the facility they’ll be entering a protocol for, with an Access Type of Air General User.

Once the consultant has requested access, the Air Signatory will receive an email that the consultant has requested access to their facility. To grant access to the consultant, the Air Signatory would need to sign in to e-Services and navigate to the My Workspace page. Then under My Facilities, the Air Signatory would click on the Manage Security icon to grant access to the consultant. (Note: This access does not continue indefinitely. At any time the Air Signatory can revoke access to their facility using that same Manage Security Icon.)

Once the consultant has been granted access as an Air General User, they’ll be able to start entering an air modeling protocol in the air modeling e-Service. To access the e-Service, the consultant will click on the Air Dispersion Modeling service link in the Service Selection section of My Workspace. They can then click the icon in the Access Facility column to get started.

The final step in submitting an air modeling e-Service is to provide an electronic signature. The only person capable of signing and submitting the protocol will be the Air Signatory. So once the consultant reaches the final certification screen, they should navigate back to the My Workspace  page, in the My Services – In Progress section and chose to Share the service with the Air Signatory. In order to share, the consultant will need the e-Service User ID of the Air Signatory. Once the consultant has shared and checked-in the service, that will allow the air signatory to access the service the consultant filled out, complete the electronic signature and submit the air modeling protocol. 

More detailed instructions and screenshots on setting up accounts and managing security can be found in the PDF icon Getting started with MPCA e-Services document.

The Help text for Sharing a service is attached below:

Sharing a Service

If you create a service, you can share that service with others who have an account in MPCA e-Services. To share a service with another person, 

  1. On the My Workspace, in the My Services – In Progress section, click the Share button for the service you want to share with another person.
  2. On the Share Service page, in the User ID box, type the username of the person that you want to share the service with, for example, pbunyan. You must type the exact username of the person as it is used in his or her MPCA e-Services user profile.
  3. Click Search.
  4. Under Result, verify that the name and email address of the person is correct.
  5. Click Grant Access.

The person you requested to share the service with will receive an email, alerting them that they have a pending shared service. 

On the My Workspace page, you will see a Pending indicator under the Shared column for that service until the other person either accepts or denies the request for sharing. If the request for sharing is accepted, the Share column will then display all the names of the users who are sharing the service.

Note: Only one user can access a service at a time. The name of the user who last modified and saved the service is displayed in the Last Modified By column. After you access a shared service, click Check In in the Share column to make the service available to the other users.

Accepting or Denying a Shared Service Request

If another person having an account in MPCA e-Services requests that you share a service, you will receive an email alerting you that you have a pending shared service.

To accept or deny the shared service request,

  1. Log in to MPCA e-Services. For details, see Logging In to MPCA e-Services.
  2. On the My Workspace page, in the My Services – In Progress section, click the Pending button under the Shared column for the service.
  3. On the Accept Shared Service page, select either Yes or No, depending on whether you want to accept or deny the request to share the service.
  4. Click Submit.

If you accept sharing the service, on the My Workspace page, the Share column will display all the names of the users who are sharing the service. If you deny sharing the service, you will no longer see the service on your My Workspace page.

Purpose of ambient air modeling: Know why this air modeling demonstration is being completed. Is this modeling in support of a Permit Modification, Environmental Review, State Implementation Plan etc.?

If modeling is being done because of a permit condition, you’ll need text with the permit requirement related to the modeling submission.

Protocol Completed in Consultation with MPCA Staff?: If you consulted with MPCA staff during completion of the protocol, have the dates and topics of those consultations available.

Will you be applying for an air permit?: Know whether or not this modeling is being done as a part of an air permit application.

Project Description: Have text available that summarizes the project that is being modeled. 500 character limit.

Type of Analysis: You will need to select what type of analysis is being done for this modeling protocol (e.g. NAAQS/MAAQS, SIL, Risk Assessment, Increment etc.)

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Will AERMAP be used?: Know whether or not AERMAP was used to create the modeling demonstration. If yes, you'll need to know what version of AERMAP was used.

Type of Elevation used: Know what elevation type was used. (eg. NED 1/3 arc second etc.)

BPIP-Prime Version used: Know what version of BPIP-Prime was used.

Are any EPA or user developed pre- or post-processors proposed to be used in the analysis?: Know whether EPA or user developed pre- or post-processors are being proposed.

Air Dispersion Model and Version: Know which model and version are being used for the modeling.

Pollutants and Averaging periods to be modeled: Know which pollutants and averaging periods are being modelled.

Regulatory Default/Non-default Options data grid: Know whether pollutants are being modeled using default or non-default methods, and whether rural or urban dispersion will be used. If urban dispersion is selected, know the urban population area being proposed and the population value. If using non-default methods, know which BETA options or NO2 tier options are being proposed. Finally you’ll need to know what level of approval is required for any non-default settings (federal/state).

Operating Scenarios: Have a list of all operating scenarios being modeled, including a detailed description of each scenario. 100 character limit.

Point Source Parameters: You will need all location (UTM coordinates and elevation (m)) and source parameter information for each point source being modeled to fill out these pages. The AQDM-02 form will be the most important resource to have on hand. 

Beyond what’s on the AQDM-02 form, you’ll also need:

  • Justification for any point sources that aren’t being modeled, that would normally be included in modeling. Justification may be simple, brief text or could reference an attachment. 100 character limit.
  • The default selection for the Coordinate Collection Method field should be digitized — Web Map Google/Yahoo/Microsoft, unless you used GIS in which case please select Digitized — DOQ.
  • Know whether or not any scalars are being applied.
  • Know whether or not a source is expected to operate intermittently.

Volume Source Parameters: You will need all location (UTM coordinates and elevation (m)) and source parameter information for each fugitive source being modeled as a volume source to fill out these pages. The AQDM-02 form will be the most important resource to have on hand.

Beyond what’s on the AQDM-02 form, you’ll also need:

  • Justification for any fugitive sources that aren’t being modeled, that would normally be included in modeling. Justification may be simple, brief text or could reference an attachment. 100 character limit.
  • The default selection for the Coordinate Collection Method field should be digitized — Web Map Google/Yahoo/Microsoft, unless you used GIS in which case please select Digitized — DOQ.
  • Know whether or not any scalars are being applied.

Area Source Parameters: You will need all source parameter information for each fugitive source being modeled as an area source to fill out these pages. The AQDM-02 form will be the most important resource to have on hand.

Beyond what’s on the AQDM-02 form, you’ll also need:

  • Justification for any fugitive sources that aren’t being modeled, that would normally be included in modeling. Justification may be simple, brief text or could reference an attachment. 100 character limit.
  • The default selection for the Coordinate Collection Method field should be digitized — Web Map Google/Yahoo/Microsoft, unless you used GIS in which case please select Digitized – DOQ.
  • Know whether or not any scalars are being applied.

You will need the elevation (m) and all UTM coordinates for each fugitive source being modeled as an area source to fill out this page. The AQDM-02 form will be the most important resource to have on hand. Again, the default selection for the Coordinate Collection Method field should be digitized — Web Map Google/Yahoo/Microsoft, unless you used GIS in which case please select Digitized – DOQ.

Know whether or not the facility being modeled has paved road fugitive dust emissions for PM10 or PM2.5 and if fugitive dust emissions will be included in the analysis. 

If paved road fugitive dust is being included in the modeling analysis, know the daily employee traffic and third party truck traffic numbers for the facility. 

If paved road fugitive dust exists but isn’t being modeled, have a text justification on-hand to explain the omission. 250 character limit. Also include the Paved Road Fugitive Dust attachment (AQDM-12) on the attachments screen.

Type of Grid: Know what type of receptor grid is being used (eg. discrete Cartesian, nested Cartesian, etc.).

Grid Dimensions: Know the dimensions of the receptor grids that are being modeled for each pollutant.

Proposed Spacing: Know the proposed spacing of the receptor grid.

AERMET Version: Know which version of AERMET was used to process the meteorological data for the modeling.

Will MPCA pre-processed data be used?: Know whether or not you’re using meteorological data that was pre-processed by the MPCA.

Surface and Upper Air Station Data Grids: Know the call signs of the surface and upper air meteorological stations proposed for use (e.g. MSP, MPX).

Start and End Year: Know which years of meteorological data are being used.

Onsite Meteorological Data: If proposing to use on-site meteorological data, know whether or not AERSURFACE will be used to determine surface characteristics and what land use land cover data will be used. Also know the UTM coordinates for the on-site meteorological station. Again the Coordinate Collection Method field should be digitized — Web Map Google/Yahoo/Microsoft, unless you used different means to collect coordinates. Finally include text or reference an attachment regarding any additional on-site processing details.

Site Selection Method: Know which methods of justification are being used to justify the surface meteorological site selection (e.g. proximity, similar land use, similar surface roughness etc.). Have text that explains the logic behind your justification and reference any related attachments. 750 character limit including the Additional Information text box.

SIL or Area of Impact Analysis: Know whether or not a SIL or area of impact analysis will be modeled and for which pollutants/averaging times.

Are background concentrations required for your analysis?: Know whether or not background concentrations will be included and if so, for which pollutant/averaging times and time intervals. Know the source of any background values being used (e.g. MPCA, EPA AirData etc.), the background value, and the units of those concentrations.

Nearby sources explicitly modeled?: Know whether or not nearby sources will be included in a modeling demonstration. If they will be included, know which pollutants/averaging times those sources will be modeled for. Also know which method(s) was used to select the nearby sources (e.g. MPCA GIS Tool), and have a list of the names of the nearby sources.

Have any nearby sources been omitted?: If any nearby sources were omitted, have text on hand for justifying the omissions.

Secondary Formation of PM2.5: When modeling PM2.5 know the tons per year of PM2.5, NOx and SO2 that will be emitted from the project. If secondary formation needs to be included in your analysis (case 3 or 4), the Describe Qualitative or Quantitative Approach text box (1,000 character limit) will automatically appear.

NO2 Tier 2: If modeling NO2 using Tier 2 methods, know which ambient ratio method is being proposed and have text for the justification of your selection. 500 character limit.
 
NO2 Tier 3: If modeling NO2 using Tier 3 methods, know the proposed in-stack ratio, and equilibrium ratio as well as whether or not source specific in-stack ratios are being proposed. If you’re using an hourly ozone file, know the units of the ozone concentrations in the file.

The following attachment types may be required depending on the type of submittal and proposed modeling methods. Please refer to this list when beginning an air dispersion modeling submittal to ensure you have all the required documents needed to complete the service. 

  • AERA Forms — If conducting an Air Emissions Risk Analysis, please include all applicable attachments.
  • Background File — Required if background concentrations are required for your analysis and if the background values will be applied on a time interval other than annual.
  • Building Input File — Required if buildings/downwash will be included in the analysis.
  • Building Spreadsheet — Required if this submittal is for modeling information only.
  • Emissions Calculations — AQDM-02 and associated calculations required.
  • Feedlot Emission Reference Material — Required if the purpose of your submittal is feedlot modeling.
  • Hourly O3 File — Required if an hourly O3 file will be used for a Tier 3 OLM or PVMRM analysis.
  • Nearby Sources Emission Calculations — Required if nearby sources will be explicitly modeled.
  • Paved Roads Results (AQDM-12) — If using MPCA’s Paved Road memo to justify exclusion of paved roads in modeling, please include this attachment.
  • SIL Analysis and Results (Table H-01) — Required if a SIL or area of impact analysis will be conducted.
  • Sample AERMOD input files — Required unless this submittal is for modeling information only.
  • State/EPA Approval — Required if state or federal approval is required for any of your proposed modeling options. Please refer to the current version of the MPCA Air Dispersion Modeling Practice Manual for more information.
  • Terrain or AERMAP input file — Required if AERMAP will be used in the analysis.