Contents of this file:
This .zip archive contains the full USEEIO v1.1 model in a standard LCA data format, the openlca JSON-LD format (http://greendelta.github.io/olca-schema/). This includes the life cycle inventory as 388 processes and all associated data and metadata, the impact methods released with the model from the 'USEEIOv1.1 Elementary Flows and LCIA Characterization Factors' file except the Economic and Social category indicators, and the US EPA data quality assessment system.


To use this file:
This file is a .zip archive of JSON-LD files following the openlca schema.  These files can be imported into an openLCA database using the following procedure. 
1. Launch openlca (1.6 or later for full functionality)
2. Create a new database with only units and flowproperties. For name we recommend USEEIOv11 and perhaps a date or version number.
3. Right click on the new database, select import, choose 'Linked Data (JSON-LD)' format (note the name of this format appears different in older versions of openLCA)
4. Select the folder on your desktop containing the .zip file. then select the .zip file and 'Finish'.

This is a large file and import time may be on the order of minutes.

One the import is complete the database is ready to use.


About the creation of the USEEIO openlca dataset
The IO model Builder (https://github.com/USEPA/IO-Model-Builder) was used to generate the base version of this database in JSON-LD format using descriptive metadata files along with the other USEEIOv1.1 files (see EPA Environmental Dataset Gateway, search 'USEEIOv1.1'). The Actors and Sources were pre-loaded into the database.  A minimal amount of editing in openLCA was  required. The naming structure and categories for the goods and services use the Fed LCA Commons naming and categorical conventions. The names for goods and services are based on interpretations of the primary industry sector descriptions corresponding to the BEA code and used to distinguish this from an industry-based model, since this is a commodity-based model. Suffixes like "at farm" were added to goods to be consistent with Fed LCA Commons and ILCD conventions. As described in Yang, Ingwersen et al. (2017) environmental data was compiled for an industry and through the IO procedured is compiled on a commodity-basis. The environmental metadata found here is also  associated with the primary industry and, if another industry produces this good or service, some of the metdata describing resources or emissions for a good or service may not be found in the metadata fields for the good or service for that reason. 

A validation check was performed during creation of the model using the IO Model Builder validation functionality. A further validation check was performed of the model in openLCA. A result was calculated for a product system based on the 'Full service restaurant' process using the included impact assessment methods. The LCIA results were checked against the results in the USEEIOv1.1 Matrices file, LCIA sheet, and found to be identical.

All exchanges in the InputsOutputs sheet contain data quality scores based on the US EPA updated pedigree matrix. These can be used for calculating aggregate data quality scores for LCI and LCIA results associated with analysis in openLCA (Edelen and Ingwersen 2017).

Three goods and services are included as a result of accounting procedures in this model and are needed for model completeness, but should not be used for original analysis. These are: Noncomparable imports, Used and secondhand goods, and Rest of World Adjustment.