EDMS 5.1.4 (June 2013)

EDMS 5.1.4 contains bug fixes and improvements over EDMS 5.0, EDMS 5.0.1, EDMS 5.02, EDMS 5.1, EDMS 5.1.1, EDMS 5.1.2 and EDMS 5.1.3 which represent a significant improvement in capabilities and functionality over the EDMS 4.x series. Here is a short list of the major improvements made to EDMS 5.1.

Study & Overall Modeling Improvements

  • Updated to the latest version of AERMOD (v12345), AERMET (v12345) and AERMAP (v11103). Based on some preliminary test runs, ambient concentration results are not impacted significantly from the previous version.
  • Updated the Airport Emissions Reduction Credit (AERC) Report for the Voluntary Airport Low Emissions (VALE).
    • Years appear in blue boxes with thick black boarders.
    • Asterisk on years where a piece of equipment has reached the end of its useful life with corresponding end note "*One or more pieces of equipment have come to the end of their first useful life."
    • In the subtotal lines, "Subtotal" text replaced with scenario "Total" text.
    • Each year's "Net Change" sections replaced with single annual "Net ER" lines with a light yellow background.
    • Other minor format changes.
  • Fleet Database Updates:
    • Engine emission data incorporates Issue 19 of ICAO Aircraft Engine Emission Database (released April 15, 2013).
    • Incorporates data from the current version (as of March 1, 2013) of Aviation Environmental Design Tool's (AEDT) fleet database for consistency in future user transitions from EDMS to AEDT, EDMS's successor.
    • Includes over 17 new aircraft types:
      • 3Xtrim 3X47 Ultra and 3X55 Trener
      • Aerospatiale Helicopters: SA-341G/342 Gazelle, SA-350D Astar (AS-350), and SA-355F Twin Star (AS-355)
      • Airbus A350-800 and -900series
      • Antonov 148
      • Bell Helicopter 222
      • Boeing 787-8 and 787-9
      • Cessna 510 Citation
      • Eclipse 500
      • Embraer ERJ170-AR and ERJ190-AR
      • Robinson Helicopter R22B
      • Schweizer Helicopter 300C
      • and the freighter versions of several commercial airliners.
    • Includes 100 new engine types:
      • Rolls-Royce AE3007A2
      • BMW Rolls-Royce BR700-725A1-12
      • GE CF34-10A (2 variants)
      • GE CF34-10E (11 variants)
      • CFM CFM56-7B (16 variants)
      • Ivchenko-Progress ZMKB D-436T1
      • GE GEnx (20 variants)
      • Honeywell Aerospace HTF7000 (4 variants)
      • Pratt & Whitney Canada JT15F-4
      • Pratt & Whitney Canada PW307A & 307B
      • Pratt & Whitney PW4000 (6 variants)
      • Pratt & Whitney Canada PW600 (3 variants)
      • PowerJet SaM146 (2 variants)
      • Rolls-Royce Tay611-8C
      • Rolls-Royce Trent 1000 (21 variants)
      • Rolls-Royce Trent XWB
      • IAE V2500 SelectOne Upgrade (7 variants)
  • Users can enter PM2.5 : PM10 mass ratio for stationary sources.
  • The emissions inventory includes H2O emission for aircraft as well as the three components of PM emissions: non-volatile, volatile sulfates and volatile organics.

This release includes:

EDMS 5.1.3 (November 2010)

EDMS 5.1.3 contains bug fixes and improvements over EDMS 5.0, EDMS 5.0.1, EDMS 5.02, EDMS 5.1, EDMS 5.1.1 and EDMS 5.1.2 and represents a significant improvement in capabilities and functionality over the EDMS 4.x series. Here is a short list of the major improvements made in the EDMS 5.1.3 series:

Study & Overall Modeling Improvements

  • Updated to the latest version of AERMOD v09292. Based on some preliminary test runs, ambient concentration results are not impacted significantly between the two versions, if at all. EPA has indicated that the runtime for AERMOD will be faster with this version.
  • Updated the Airport Emissions Reduction Credit (AERC) Report for the Voluntary Airport Low Emissions.
    • A single Emission Reduction (ER) Report is now produced with useful life calculations based on user-defined useful life.
    • The user can specify source groups for ER Report.
  • Fleet Database Updates:
    • Incorporated BADA version 3.8.
    • Updated the performance (INM_TYPE) and a BADA profile mappings of several aircraft-engine combinations:
      • 2 aircraft-engine combinations were mapped to new performance (INM_TYPE) and a new BADA profiles.
      • 12 aircraft-engine combinations were mapped to new performance (INM_TYPE) profiles.
      • 493 aircraft-engine combinations were mapped to new BADA profiles.
    • The number of engines for the Boeing DC-6, the Lockheed L-1329 Jetstar I, and the Lockheed L-1329 Jetstar II was corrected from 2 to 4.
    • 3 new aircraft-engine combinations have been added:
      • Boeing 747-100 Series aircraft with the JT9D-7R4D, -7R4D1 engine.
      • Boeing DC-8 Series 60 aircraft with the JT8D-7 series engine.
      • Boeing DC-9-50 Series aircraft with the JT8D-7 series engine.
  • The maximum analysis year was increased from 2050 to 2099. (motor vehicle and GSE emission rates will be kept constant at 2050 values for analysis years of 2051 through 2099).
  • Updated GUI and Database to accept up to 3 digits for APU usage time in minutes (e.g. 999 vs. 99).
  • Updated the default GSE attached to the CASA 212 aircraft to be more representative.
  • Updated NAAQS Table in the User Manual and EDMS Help.
  • Recompiled MOBILE to be used on a 64-bit computer. The MOBILE results are not changed from this action.

This release includes:

EDMS 5.1.2 (November 2009)

EDMS 5.1.2 contains bug fixes relating to the VALE Emission Reduction Reports from EDMS 5.1.1. Here is the short list of improvements made in EDMS 5.1.2:

  • Corrected the title "AERC Report" so it is displayed correctly as "Emissions Reduction Report for Cost Effectiveness" or "Emission Reduction Report for AERCs"
  • Fixed the "Cumulative Total" of the report to show the correct value for the VALE scenarios.

This release includes:

EDMS 5.1.1 (September 2009)

EDMS 5.1.1 contains bug fixes and minor improvements over EDMS 5.0, EDMS 5.0.1, EDMS 5.02 and EDMS5.1 and represents a significant improvement in capabilities and functionality over the EDMS 4.x series. Here is a short list of the major improvements made in the EDMS 5.1.1 series:

Study & Overall Modeling Improvements

New functionalities have been added to EDMS5.1.1 including the ability to:

  • Select the pollutants for which the Hourly Rate Emissions (HRE) files are generated.
  • Display the properties of the study, scenario, airport, or year selected in the main window
  • Auto Sort the aircraft operations when using a detailed schedule
  • Revised the AERC dialog to be consistent with the current VALE Technical Report
  • Updated the useful life values for some Ground Support Equipment (GSE)

In addition to the new functionalities, the following major updates are discussed more in detail below and in the EDMS5.1.1 User's Manual:

  • Renamed Speciated Hydrocarbon (HC) Emissions to Speciated Organic Gas (OG) emissions
  • Revised speciated OG profiles for turbine aircraft and APUs
  • Updated NAAQS Table in User Manual and EDMS Help
  • Updated BADA performance to version 3.7
  • Updated aircraft flight performance profiles
  • Updated the ICAO certified engine emissions based on the ICAO databank issue 16A
  • 11 new aircraft have been added
  • 17 new engines have been added

This release includes:

EDMS 5.1 (September 2008)

EDMS 5.1 contains bug fixes and minor improvements over EDMS 5.0, EDMS 5.0.1, and EDMS5.0.2 and represents a significant improvement in capabilities and functionality over the EDMS 4.x series. Here is a short list of the major improvements made in the EDMS 5.1 series:

Study & Overall Modeling Improvements

New functionalities have been added to EDMS5.1 including the ability to:

  • Calculate individual speciated hydrocarbons (HC), including known hazardous air pollutants (HAPs) for all airport emission sources,
  • Calculate total organic gases (TOG) for all airport emission sources,
  • Estimate carbon dioxide (CO2) emissions for aircraft only,
  • Export emissions inventory results into a semi-colon delimited text file for analytical use in spreadsheet programs.
  • Estimate particulate matter (PM) emissions from Auxiliary Power Units (APUs)

In addition to the new functionalities, the following major updates are discussed more in detail below and in the EDMS5.1 User's Manual:

  • Aircraft PM emissions are estimated only for aircraft with International Civil Aviation Organization (ICAO) certified engines,
  • Revised FOA3 (for non-US airports) and FOA3a (for US airports) methodologies are harmonized to predict the non-volatile portion of PM emissions more accurately based on the engine type: turbofan (TF) versus internally-mixed turbofan (MTF),
  • To derive sulfur-driven volatile PM emissions from aircraft, default values for fuel sulfur content (FSC) and the sulfur-to-sulfate conversion rate have been adjusted to reflect the latest science for application in the FOA3 methodology for non-US airports only, as recommended by the ICAO. Users still have the flexibility to change these default values to suit their study-specific data,
  • Default values for FSC and the sulfur-to-sulfate conversion rate have been fixed for US airports only, as recommended by the EPA.
  • Updated equation to derive the SOx emission index for aircraft based upon the sulfur balance between sulfur-driven volatile PM emissions and SOx gaseous emissions,
  • Revised HC emission estimates upon engine startup for aircraft with ICAO-certified engines only, as recommended by ICAO.
  • 40 new aircraft have been added,
  • 63 new engines have been added, and
  • 5 new APUs have been added.

Saving Study

  • Similar to other Windows applications, the EDMS 5.1 user must explicitly "save" the study to disk. This will allow the user to revert to the last saved version, if an error is made during data entry. However, updating the emissions inventory will automatically save the study data upon completion of the emission calculations.

This release includes:

EDMS 5.0.2 (June 2007)

EDMS 5.0.2 contains bug fixes and minor improvements over EDMS 5.0, and EDMS 5.0.1 and represents a significant improvement in capabilities and functionality over the EDMS 4.x series. Here is a short list of the major improvements made in the EDMS 5.0 series:

Study & Overall Modeling Improvements

  • Over 220 new aircraft
  • Over 65 new engines
  • Multiple scenarios, multiple airports, and multiple years all in one study
  • Harmonized emissions inventories and dispersion analyses
  • New dynamic aircraft performance-based modeling
  • New sequencing modeling for taxi times
  • New capability to use hourly weather data in emission inventories
  • More precise aircraft delay and sequencing capabilities by operational profiles in 15-minute bins
  • Improved EDMS menu architecture
  • The Airport Emissions Reduction Credit (AERC) report is now integrated into EDMS
  • Taxiway usage is now computed automatically
  • Import and Export features are enhanced and available under the FILE menu
  • Runway queues are now computed dynamically by the sequencing model

This release includes:

EDMS 5.0.1 (March 2007)

EDMS 5.0.1 contains bug fixes and minor improvements over EDMS 5.0, which represents a significant improvement in capabilities and functionality over the EDMS 4.x series. Here is a short list of the major improvements made in the EDMS 5.0 series:

Study & Overall Modeling Improvements

  • Over 220 new aircraft
  • Over 65 new engines
  • Multiple scenarios, multiple airports, and multiple years all in one study
  • Harmonized emissions inventories and dispersion analyses
  • New dynamic aircraft performance-based modeling
  • New sequencing modeling for taxi times
  • New capability to use hourly weather data in emission inventories
  • More precise aircraft delay and sequencing capabilities by operational profiles in 15-minute bins
  • Improved EDMS menu architecture
  • The Airport Emissions Reduction Credit (AERC) report is now integrated into EDMS
  • Taxiway usage is now computed automatically
  • Import and Export features are enhanced and available under the FILE menu
  • Runway queues are now computed dynamically by the sequencing model

Saving Study

  • Similar to other Windows applications, the EDMS 5.0 user must explicitly “save” the study to disk. This will allow the user to revert to the last saved version, if an error is made during data entry. However, updating the emissions inventory will automatically save the study data upon completion of the emission calculations.

Emissions Modeling

  • New dynamic emissions module computes aircraft LTO emissions based on performance parameters and weather conditions
  • New FOA3 methodology for estimating PM emissions from aircraft engines

Dispersion Modeling

  • Dispersion is now performed on all mass emissions up to the mixing height
  • Dispersion is conducted using the exact same values from the emissions inventory

Airports

  • Added fidelity where the physical airport layout can now be used for emissions inventory purposes as well as dispersion
  • Completely redesigned Airports Database with nearly 35,000 airports world-wide
  • New weather dialog allows the user to choose between annual average or hourly weather, set the mixing height, and launch the AERMET wizard
  • Dynamic weather feature when using hourly data directly affects aircraft performance, aircraft emissions, and the selection of the active airport configuration(s). The airport configuration dynamically affects sequence modeling for taxi times and runway usage.
  • Streamlined taxiways consisting of multiple segments
  • New capability to designate taxipaths linking gates with runways
  • Runway ends can be assigned individual elevations as well as individual glide slopes
  • Improved runway configuration capabilities by either using hour of the day, ceiling, visibility and temperature as activation parameters to determine the appropriate configuration, or the user can specify the fixed percentage configurations to be used annually and EDMS5.0 will match the required percentages.

Aircraft

  • Improved fleet database is now common between EDMS and INM
  • New dynamic flight performance modeling harmonized with INM
  • Transition from takeoff to climbout is now dependent upon aircraft performance characteristics and weather
  • Aircraft schedules can be used in lieu of operational profiles
  • Boeing Fuel Flow Method 2 is used to scale emissions for a contiguous range of weather conditions, rather than just standard atmospheric conditions.
  • Engine startup emissions are now quantified and reported
  • Arrivals and departures have be separated for flexibility

Non-Aircraft Sources

  • MOBILE 6.2 is the only MOBILE model version available
  • Both ‘GSE assignment’ and ‘GSE population’ can be run in the same scenario
  • Emission factors for GSE have been updated according to EPA’s NONROAD 2005
  • A single roadway can now be composed of multiple segments
  • EDMS5.0 no longer doubles roadway traffic to model round-trips

This release includes:

EDMS 5.0 (January 2007)

EDMS 5.0 represents a significant improvement in capabilities and functionality. EDMS 5.0 users can take advantage of many improvements. Here is a short list of the major elements:

Study & Overall Modeling Improvements

  • Over 220 new aircraft
  • Over 65 new engines
  • Multiple scenarios, multiple airports, and multiple years all in one study
  • Harmonized emissions inventories and dispersion analyses
  • New dynamic aircraft performance-based modeling
  • New sequencing modeling for taxi times
  • New capability to use hourly weather data in emission inventories
  • More precise aircraft delay and sequencing capabilities by operational profiles in 15-minute bins
  • Improved EDMS menu architecture
  • The Airport Emissions Reduction Credit (AERC) report is now integrated into EDMS
  • Taxiway usage is now computed automatically
  • Import and Export features are enhanced and available under the FILE menu
  • Runway queues are now computed dynamically by the sequencing model

Saving Study

  • Similar to other Windows applications, the EDMS 5.0 user must explicitly “save” the study to disk. This will allow the user to revert to the last saved version, if an error is made during data entry. However, updating the emissions inventory will automatically save the study data upon completion of the emission calculations.

Emissions Modeling

  • New dynamic emissions module computes aircraft LTO emissions based on performance parameters and weather conditions
  • New FOA3 methodology for estimating PM emissions from aircraft engines

Dispersion Modeling

  • Dispersion is now performed on all mass emissions up to the mixing height
  • Dispersion is conducted using the exact same values from the emissions inventory

Airports

  • Added fidelity where the physical airport layout can now be used for emissions inventory purposes as well as dispersion
  • Completely redesigned Airports Database with nearly 35,000 airports world-wide
  • New weather dialog allows the user to choose between annual average or hourly weather, set the mixing height, and launch the AERMET wizard
  • Dynamic weather feature when using hourly data directly affects aircraft performance, aircraft emissions, and the selection of the active airport configuration(s). The airport configuration dynamically affects sequence modeling for taxi times and runway usage.
  • Streamlined taxiways consisting of multiple segments
  • New capability to designate taxipaths linking gates with runways
  • Runway ends can be assigned individual elevations as well as individual glide slopes
  • Improved runway configuration capabilities by either using hour of the day, ceiling, visibility and temperature as activation parameters to determine the appropriate configuration, or the user can specify the fixed percentage configurations to be used annually and EDMS5.0 will match the required percentages.

Aircraft

  • Improved fleet database is now common between EDMS and INM
  • New dynamic flight performance modeling harmonized with INM
  • Transition from takeoff to climbout is now dependent upon aircraft performance characteristics and weather
  • Aircraft schedules can be used in lieu of operational profiles
  • Boeing Fuel Flow Method 2 is used to scale emissions for a contiguous range of weather conditions, rather than just standard atmospheric conditions.
  • Engine startup emissions are now quantified and reported
  • Arrivals and departures have be separated for flexibility

Non-Aircraft Sources

  • MOBILE 6.2 is the only MOBILE model version available
  • Both ‘GSE assignment’ and ‘GSE population’ can be run in the same scenario
  • Emission factors for GSE have been updated according to EPA’s NONROAD 2005
  • A single roadway can now be composed of multiple segments
  • EDMS5.0 no long doubles roadway traffic to model round-trips

This release includes:

EDMS 4.5 (June 2006)

The EDMS 4.5 update includes improvements to the Road and Parking Facilities portion of the model pertaining to the use of EPA’s MOBILE 6.2 model, as well as many other model improvements such as:

Road & Parking Facilities

  • Correction to the memory error that eliminates the generation of non-numeric values when the user selected anything other than 'Default Fleet Mix' while requesting the "System Generated Values" in MOBILE 6.2.
  • Added an Apply and OK button to run MOBILE once after all changes to roadways, parking facilities have been added to the study.
  • Updated the MOBILE 6 table which corrects overestimated PM values for heavy duty vehicles using diesel fuel for the year 2007 and beyond.
  • Parking and roadway emissions factors are now modeled with greater precision of up to 4 decimal places.
  • Lifted the restrictive 0 to 2 grams/vehicle mile limitation on fugitive PM emissions from parking lot and roadways.
  • User-edited parking and roadway emissions have been preserved while updating studies that were created in previous versions of EDMS.

Study Setup

  • The selection of MOBILE 5a and 5b now executes without crashing and output the correct emissions results.

View Concentrations

  • EDMS 4.5 now provides the user with the option to stop loading concentration files, thereby saving the user time when they have mistakenly loaded the wrong concentration file.
  • EDMS 4.5 loads all concentration files into the available list regardless of where they were created, thereby providing the user easy access to any concentration file that exists in the current study folder.

AERMOD

  • EDMS 4.5 now uses scientific notation to represent the hourly emissions in the (.hre) files, thereby providing more accuracy.

Emissions Inventory

  • EDMS 4.5 now displays the date of when the emissions inventory was run in the print out.
  • GSE Data Available (MS Excel)

This release includes:

Note: A password is required to run the EDMS 4.5 upgrade installer. To obtain the password, please contact the EDMS distributor and be prepared to supply your EDMS serial number or the name of the person who purchased the user copy of EDMS:
CSSI Inc., at (202) 863-2175 or Contact EDMS distributor.

EDMS 4.4 (November 2005)

EDMS 4.4 now includes AERMOD and AERMET version 04300, EPA’s newly promulgated version of the dispersion model and meteorological data processor (70 FR 68218). In addition, EDMS 4.4 includes updates to area source calculations and enhanced meteorological data processing, as well as many other bug fixes and model improvements.

Bug Fixes

  • Correction of import tool for studies created in EDMS4.3
  • Correction of import tool for GSE assignments whose reference model name contained commas.
  • Correction of release heights pertaining to parking facilities.
  • Correction of proper naming convention for “Shell Height” pertaining to vertical fixed roof fuel tanks.
  • Correction of data validation processes for stationary sources.
  • Correction of warning and prompting the user to check the surface & upper air weather files for correctness before rerunning AERMOD when the number of missing weather hours exceeds 10 percent.

Enhancements

  • EDMS now includes the newly promulgated AERMOD version 04300 (70 FR 68218 (PDF) ). This new release includes updates to area source calculations and enhanced meteorological data processing.
  • Users have increased functionality in modeling emissions from new PW6122A, PW6124A, GE90-110B1, -113B, and -115 aircraft engines
  • Certain aircraft engines have been deleted due to the engine data being superseded by more recent test data
  • More accurate aircraft categorization is contained in this version

This release includes:

Note: A password is required to run the EDMS 4.4 upgrade installer. To obtain the password, please contact the EDMS distributor and be prepared to supply your EDMS serial number or the name of the person who purchased the user copy of EDMS:
CSSI Inc., at (202) 863-2175 or Contact EDMS distributor.

EDMS 4.3 (August 2005)

EDMS 4.3’s aircraft engine system tables now include smoke numbers for many commercial aircraft engines so that the user can model PM emissions using the First Order Approximation version 2.0 methodology. The user can also create user-created aircraft with PM emissions.

First Order Approximation Qualifier

The Federal Aviation Administrations (FAA) first order approximation (FOA) methodology estimates PM emissions from commercial jet-turbine aircraft engines. The FOA serves an interim purpose of meeting PM compliance issues now, while the science and accuracy of PM measurement techniques mature. The non-volatile portion of PM is based on a correlation between the Smoke Number (SN) from the engine certification test and the fuel flow for a specific mode of operation, namely take-off, climb-out, taxi/idle, and approach. For some engines, a maximum SN is conservatively used because modal-specific SNs are not available. The volatile portion of PM is derived from a limited number of field measurements and theoretical relationships. Due to the uncertainties associated with the currently available information, the volatile PM estimates include an additional margin to be conservative. The accuracy and applicability of the FOA will be improved as future field measurements and scientific advances become available. In the future, every effort will be made to provide the statistical uncertainty for the FOA, and any subsequent studies will be structured so that the statistical uncertainty can be derived for the results. The FOA is only applicable to aircraft engines that have reported SNs and modal fuel flows. In cases where EDMS does not include aircraft PM emission estimates, use the best available information such as the following: averaging the aircraft engine PM data from AP-42 Volume II: Mobile Sources, 4th Edition, September 1995.

Bug Fixes

  • Correction of stationary source emission rates for dispersion analyses
  • Correction by use of correct taxiway speeds for taxiways used in dispersion analyses
  • Correction of annual operations after operational profile weights have been changed
  • Correction of emission inventories to reflect user-edited emission factors for parking facilities
  • Correction of input units for fuel tanks and aircraft engine testing
  • Correction of emissions factors for fuel tanks as computed more consistently with EPA methodology

Enhancements

  • Users can estimate PM emissions from many commercial aircraft engines using the FOA version 2.0 methodology.
  • Users have increased functionality in modeling emissions from new PW6122A, PW6124A, GE90-110B1, -113B, and -115 aircraft engines
  • Certain aircraft engines have been deleted due to the engine data being superseded by more recent test data
  • More accurate aircraft categorization is contained in this version

This release includes:

Note: A password is required to run the EDMS 4.3 upgrade installer. To obtain the password, please contact the EDMS distributor and be prepared to supply your EDMS serial number or the name of the person who purchased the user copy of EDMS:
CSSI Inc., at (202) 863-2175 or Contact EDMS distributor.

Order Form:
Send the EDMS order form (PDF) to edms@cssiinc.com or call (202) 863-2175.

EDMS 4.21

EDMS 4.21 takes advantage of many new algorithm and data developments. The user will immediately notice that the emissions for new pollutants are provided. These include:

  • Total Hydrocarbons (THC)
  • Non-Methane Hydrocarbons (NMHC)
  • Volatile Organic Compounds (VOC)
  • PM2.5

Bug Fixes

  • Correction of to GSE emissions inventory totals correction
  • Correction of to G gate emission rate calculations for dispersion correction
  • Corrected P printer problems encountered encountered by some users
  • Corrected U user-created aircraft deletion problem
  • AERCPP output now displays the GSE emissions separately

Enhancements

  • Mobile 6.2.03 is now included
  • Emissions inventory printed reports now include the study title
  • Values of user-specific stationary source parameters are retained when users change the source type

This release includes:

Note: A password is required to run the EDMS 4.21 upgrade installer. To obtain the password, please contact the EDMS distributor and be prepared to supply your EDMS serial number or the name of the person who purchased the user copy of EDMS:
CSSI Inc., at (202) 863-2175 or Contact EDMS distributor .

Order Form:
Email an EDMS order form (PDF) to edms@cssiinc.com or call (202) 863-2175.

Version 4.2 (September 2004)

This release of EDMS interfaces with EPA’s latest version of AERMOD (02222) and its supporting weather and terrain processors, AERMET and AERMAP. Users are also able to select the version of the EPA MOBILE on-road vehicle emission factor tool to use with their study, to allow greater flexibility when using EDMS to support a State Implementation Plan or similar study. Interfaces to MOBILE versions 5a, 5b, and 6.2 are included with EDMS 4.2. The method used to estimate stationary source emissions has been completely revised for this release in order to allow the exact procedures described in Air Quality Procedures for Civilian Airports and Air Force Bases (The Air Quality Handbook) to be followed. A detailed list of the changes made to EDMS from version 4.1 to 4.2 is provided in the EDMS 4.2 Reference Manual Supplement (PDF).

EDMS Version 4.2 generates input files for the powerful next-generation dispersion model developed by EPA, AERMOD. AERMET, the AERMOD meteorological preprocessor, requires a significant amount of weather data in order to accurately characterize the atmosphere. Surface data for each hour is required to determine the current wind direction, wind speed, temperature, and cloud cover. In addition, twice-daily upper-air observations are required to properly determine the mixing height.

This release includes:

4.12 (October 2003)

EDMS 4.12 updates and enhances system data files to include:

  • New emissions factors
  • Recent aircraft fleet data
  • Aircraft performance data for 22 new aircraft
  • Increased user flexibility through enhancements to the import and dispersion capabilities.
  • Corrections to several miscellaneous bugs.

This release includes:

4.1GSE (October 2003)

EDMS 4.1 marks the first phase of migration toward the EPA draft NONROAD model for Ground Support Equipment (GSE) emissions. This transition includes incorporating EPA-provided fleet average emission indices. In addition, EDMS 4.1 updates the default GSE assignments and their fuels used, operating times, brake horsepower (BHP) ratings, and load factors. The supplement discusses these changes and how they increase the accuracy of GSE results.

4.11 (December 2002)

EDMS 4.11 corrects a bug associated with dispersion concentrations and contains a new feature identifying the version used to create older studies opened in Version 4.11.

This release includes:

4.1 (October 2002)

EDMS 4.1 incorporates substantial model enhancements including:

  • The first phase of enhancements to the GSE component of EDMS (a population-based calculation approach, NONROAD-derived fleet average emission factors, and modeling gates as area sources)
  • Results from a recent aircraft plume LIDAR study (PDF)to account for plume rise and a more accurate initial vertical dispersion coefficient
  • Use of composite area sources for modeling aircraft (PDF) to more accurately account for characteristics that vary by aircraft type
  • The ability to import airport "wallpaper" (airport diagrams in the form of bitmaps for over 400 airports are available)
  • An expanded import and export utility
  • Many general user friendly items such as a duplication button for items listed in various dialog boxes and multiple-selection editing

This release includes:

The following versions of EDMS are available upon request from the Office of Environment & Energy.

4.0 (May 2001)

FAA re-engineered EDMS to take advantage of new data and algorithm developments

3.0 (1997)

In response to the growing needs of the air quality analysis community and changes in regulations (Conformity requirements from the Clean Air Act Amendment of 1990) the Federal Aviation Administration (FAA), in cooperation with the United States Air Force (USAF), re-engineered and enhanced EDMS.