Science & Technology
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NHDPlus Hawaii Data (Vector Processing Unit 20)
NHDPlus data for the Hawaii vector processing unit.
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NHDPlus California Data (Vector Processing Unit 18)
NHDPlus data for the California vector processing unit.
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NHDPlus Pacific Northwest Data (Vector Processing Unit 17)
NHDPlus data for the Pacific Northwset vector processing unit.
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NHDPlus Great Basin Data (Vector Processing Unit 16)
NHDPlus data for the Great Basin vector processing unit.
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NHDPlus Rio Grande Data (Vector Processing Unit 13)
NHDPlus data for the Rio Grande vector processing unit.
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NHDPlus Souris-Red-Rainy Data (Vector Processing Unit 09)
NHDPlus data for the Souris-Red-Rainy vector processing unit.
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NHDPlus Lower Mississippi Data (Vector Processing Unit 08)
NHDPlus data for the Lower Mississippi vector processing unit.
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NHDPlus Ohio Data (Vector Processing Unit 05)
NHDPlus data for the Ohio vector processing unit.
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NHDPlus Great Lakes Data (Vector Processing Unit 04)
NHDPlus data for the Great Lakes vector processing unit.
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How to Apply
How to Apply
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DWSRF Resources for Water Utilities
This page contains links and summaries of DWSRF resources.
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National Electric Energy Data System (NEEDS)
Find information on EPA's National Electric Energy Data System (NEEDS) database including basic geographic, operating, air emissions, and other data on these generating units.
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Analysis of the Final MATS Risk and Technology Review (RTR)
IPM analyses of the Proposed MATS Risk and Technology Review (RTR)
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Results using Pre-IRA 2022 Reference Case
Download EPA's IPM v6 including documentation, overview, System Summary Report, .DAT, .RPE, .RPT files, Gas Report, State Level Emissions, Generation and Heat Input Summary.
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Supporting Documentation of the 2015 Ozone NAAQS Actions
IPM analyses of the Good Neighbor Plan.
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Results using 2023 Reference Case
Download EPA's IPM v6 including documentation, overview, System Summary Report, .DAT, .RPE, .RPT files, Gas Report, State Level Emissions, Generation and Heat Input Summary.
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SF6 Leak Monitoring Webcast
Overview of leak monitoring systems to identify SF6 emissions from high voltage electrical equipment.
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SF6 Gas Inventory Webcast
Overview of managing SF6 gas inventories.
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eGRID2018 Notes
Describes the data corrections made in eGRID2018v2.
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Petitions for Reconsideration Received for the CSAPR Update
EPA has received petitions for reconsideration of the Cross-State Air Pollution Rule Update for the 2008 Ozone NAAQS from the following stakeholders.