The National Academies

ACRP 02-90 [Pending]

Development of Airport Construction Emission Inventory Tool (ACEIT) Version 2.0

  Project Data
Funds: $350,000
Contract Time: 24 months
Staff Responsibility: Joseph D. Navarrete



ACRP Report 102: Guidance for Estimating Construction Emissions and the Airport Construction Emissions Inventory Tool (ACEIT) help airports and stakeholders better understand and quantify airport construction emissions and bring consistency to airport construction emissions inventories.  The ACEIT enables users to rely on default information about the construction process for typical airport projects.  However, since the release of the guidebook and tool in 2014, both on-airport construction practices and modeling techniques have changed.  For example, the U.S. EPA emissions models, NONROAD and MOVES, were combined into MOVES; emissions from typical construction projects have decreased due to improved equipment and practices; federal and state regulations have changed; and inventory methods have improved.  In addition, users have identified the need for the tool to have more reliable performance and flexibility to accommodate unique study parameters.  These changes need to be incorporated into the tool and a user manual to ensure they provide the most helpful guidelines and ensure modeling efficiency and representativeness.




The objective of this research is to develop ACEIT Version 2.0 and an accompanying user manual to update and improve the tool’s functionality and usability.  At a minimum, the improvements to the tool should include:

  • Ability to incorporate and modify key calculation parameters (e.g., from MOVES, NONROAD, AP-42):
    • Latest emission factors,
    • Deterioration rates,
    • Annual equipment usage rates,
    • Temporal considerations (e.g., time of day, day of week, season),
    • Equipment types,
    • Horsepower rating, and
    • All fuel types (conventional and alternative);
  • Increased program stability, flexibility, and reliability (e.g., ability to include a large number of activities without crashing the tool); and
  • Additional output results, including, but not limited to: CO2 equivalents, black carbon, and individual GHG emissions.

The user manual accompanying the enhanced tool should be based on the original tool guidance found in ACRP Report 102, and at a minimum, provide:

  • Short overview (up to one page) of airport construction emissions analysis, including reference to Airport Air Quality Resource Library and other relevant resources;
  • Description of input requirements;
  • Checklist of data to be used in the tool;
  • Example case studies; and
  • Guidance for incorporating unique aspects of a study.



The ACRP is seeking the insights of proposers on how best to achieve the research objective. Proposers are expected to describe research plans that can realistically be accomplished within the constraints of available funds and contract time. Proposals must present the proposers' current thinking in sufficient detail to demonstrate their understanding of the issues and the soundness of their approach to meeting the research objective.  The work proposed must be divided into tasks, and proposers must describe the work proposed in each task in detail.


The research plan should include, at a minimum, the following interim deliverables:


1. Technical report that includes:

  • Assessment of the tool’s current usability, features, and an initial list recommended improvements to be included in Version 2.0, including rationale;
  • Assessment of the current software platform’s suitability for the tool and recommended improvements, including rationale; and
  • Review and recommendation for an alternate software platform if the current platform is deemed unsuitable, including a rationale;

 2. Interim report that describes all work accomplished in early tasks including:

  • Tool equations and assumptions;
  • Validation and beta test plans (including list of participants and select panel members);
  • Annotated outline of user manual; and
  • Process flowchart and screenshots of proposed user interface for Version 2.0; and

 3. Results of the validation effort and beta test, including a final list of recommended refinements for Version 2.0, with rationale.


The research plan should also include, at a minimum, the following checkpoints with the ACRP project panel: (1) kickoff web meeting to be held within 1 month of contract execution; (2) web meeting to review the technical report and confirm the initial list of tool improvements for Version 2.0; (3) interim meeting to review the results of the interim report; and (4) web meeting to review results of validation and beta test and to confirm final list of refinements for Version 2.0.


The final deliverables will include:

  • ACEIT Version 2.0 that incorporates the enhancements approved by the panel, including documentation and code;
  • ACEIT Version 2.0 user manual;
  • Summary of Key Findings
  • Further Recommended Research Memo; and
  • Technical memorandum titled, “Implementation of Research Findings and Products”.


Status: Proposals have been received for this project.  The project panel will meet in late December 2020/January 2021 to select a contractor to perform the work.


To create a link to this page, use this URL: http://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=4925