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Federal
Characterization Factors for Construction Material EPD Indicators (ISO21930-LCIA-US) v0.1
U.S. Environmental Protection Agency —
This dataset contains characterization factors (CFs) for the five mandatory life cycle impact assessment (LCIA) categories required in ISO 21930:2017: 1. Greenhouse... -
Federal
US EPA Nonattainment Areas and Designations-Annual PM2.5 (1997 NAAQS)
U.S. Environmental Protection Agency —
This web service contains the following layers: PM2.5 Annual 1997 NAAQS State Level and PM2.5 Annual 1997 NAAQS National . It also contains the following tables:...