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Gridded earthquake ground motions for the 2023 AASHTO Design Specifications
For designing bridges to safely resist earthquakes, the 2023 editions of the AASHTO (1) Guide Specifications for LRFD Seismic Bridge Design, (2) LRFD Bridge Design... -
Gridded earthquake ground motions for the 2023 ASCE/SEI 41 Standard outside o...
For evaluating and retrofitting existing buildings to resist earthquakes, the 2023 ASCE/SEI 41 Standard provides Basic Safety Earthquake spectral response accelerations at four... -
Nonattainment Area - 1 hr Ozone (1979 Standard-Revoked)
The Nonattainment Area - 1 hr Ozone (1979) dataset was updated on June 30, 2025 by the Environmental Protection Agency (EPA) and is part of the U.S. Department of Transportation... -
GDR Data Management and Best Practices for Submitters and Curators
Resources for GDR data submitters and curators, including training videos, step-by-step guides on data submission, and detailed documentation of the GDR. The Data Management and... -
Nonattainment Area - 8 hr Ozone (2008 Standard)
The Nonattainment Area - 8 hr ozone (2008) dataset was updated on June 30, 2025 by the Environmental Protection Agency (EPA) and is part of the U.S. Department of Transportation... -
Open Water Rate Specification
This repository documents the Open Water Rate Specification (OWRS), a machine-readable format for specifying and sharing water rate information. OWRS is designed for analysts,... -
Map Layer: CMECS In Action Project Footprints
The Coastal and Marine Ecological Classification Standard (CMECS) is a catalog of terms and definitions that provides a means for classifying marine ecological units using a... -
Gridded uniform hazard peak ground acceleration data and 84th-percentile peak...
The Maximum Considered Earthquake Geometric Mean (MCEG) peak ground acceleration (PGA) values of the 2020 NEHRP Recommended Seismic Provisions and 2022 ASCE/SEI 7 Standard are...
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