Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content

FEDEFL Inventory Methods v1.0.0

Metadata Updated: July 25, 2023

FEDEFL Inventory Methods v1.0.0 is a life cycle inventory analysis or grouping method for flows in the Federal Elementary Flow List (FEDEFL) (EPA 2019). Like the related life cycle impact assessment (LCIA) methods, this dataset includes collections of characterization factors for a given flow (e.g., NH3 to air) for a set of categories (e.g., acidification), provided in units of group equivalence per unit mass of the flowable. But the methods are simplified in that the factors are generally 1 as they only classify flows according to categories or groupings. These methods are typically used along with life cycle inventory data to provide indicators for reporting in life cycle assessment (LCA).

The groupings provided for FEDEFL flows in this method include land use, freshwater resources, water resources, mineral resources, energy, nonrenewable energy, renewable energy, hazardous air pollutants (HAPs) and pesticides.

This dataset was created by the LCIA Formatter v1.0 ( The LCIA Formatter is a tool for providing standardized life cycle impact assessment and inventory methods with characterization factors transparently applied to flows from an authoritative flow list, like the FEDEFL. The LCIA Formatter used the fedelemflowlist v1.0.7 tool @, which subsets the flow list to create the various groupings with a combination of flow type and context matches, or by identifying matched flows in mapping files. Relevant mappings and explanatory notes are provided separately.

The zip file is a compressed archive of JSON files following the openLCA schema @ Usage Notes for zip file: This file was tested to correctly import into an openLCA v1.10 database already containing flows from the FEDEFL v1.0.7. It will provide matching factors for any FEDEFL v1.0 to 1.0.7 elementary flow already present in the database that are classified in the provided groupings. This file itself does not contain the elementary flows. The complete FEDEFL v1.0.7 flow list may be retrieved from the Federal LCA Commons elementary flow list repository @

The .parquet file is in the LCIA Formatter's LCIAmethod format. Usage notes for parquet file: The .parquet file can be read in by any Apache parquet reader.

References EPA 2019. The Federal LCA Commons Elementary Flow List: Background, Approach, Description and Recommendations for Use.

This dataset is associated with the following publication: Young, B., M. Srocka, W. Ingwersen, B. Morelli, S. Cashman, and A. Henderson. LCIA Formatter. Journal of Open Source Software. Journal of Open Source Software, 6(66): 3392, (2021).

Access & Use Information

Public: This dataset is intended for public access and use. License: See this page for license information.

Downloads & Resources



Metadata Created Date June 15, 2021
Metadata Updated Date July 25, 2023

Metadata Source

Harvested from EPA ScienceHub

Additional Metadata

Resource Type Dataset
Metadata Created Date June 15, 2021
Metadata Updated Date July 25, 2023
Publisher U.S. EPA Office of Research and Development (ORD)
Data Last Modified 2021-05-11
Public Access Level public
Bureau Code 020:00
Schema Version
Harvest Object Id 0e931482-76bf-4f65-84b8-17844fa2ca9d
Harvest Source Id 04b59eaf-ae53-4066-93db-80f2ed0df446
Harvest Source Title EPA ScienceHub
Program Code 020:000
Publisher Hierarchy U.S. Government > U.S. Environmental Protection Agency > U.S. EPA Office of Research and Development (ORD)
Related Documents,,,,
Source Datajson Identifier True
Source Hash 7601e5a77d03cb4bff4fdb0c9a2842b57d99d017
Source Schema Version 1.1

Didn't find what you're looking for? Suggest a dataset here.

An official website of the GSA's Technology Transformation Services

Looking for U.S. government information and services?