The Environmental Protection Agency's Enforcement and Compliance History Online (ECHO) website provides customizable and downloadable information about environmental inspections, violations, and enforcement actions for EPA-regulated facilities related to the Clean Air Act, Clean Water Act, Resource Conservation and Recovery Act, and Safe Drinking Water Act. These data are updated weekly as part of the ECHO data refresh, and ECHO offers many user-friendly options to explore data, including: • Facility Search: ECHO information is searchable by varied criteria, including location, facility type, and compliance status. Search results are customizable and downloadable. • Comparative Maps and State Dashboards: These tools offer aggregated information about facility compliance status, regulatory agency compliance monitoring, and enforcement activity at the national and state level. • Bulk Data Downloads: One of ECHO’s most popular features is the ability to work offline by downloading large data sets. Users can take advantage of the ECHO Exporter, which provides summary information about each facility in comma-separated values (csv) file format, or download data sets by program as zip files.

This submission includes publicly available data from a relational database (brand unknown) downloaded via the DMAP GraphQL API (see below) into CSV files with column names generated from the database field names. If you have questions about the data in its original form or location, please use the EPA Contact Us form at: https://www.epa.gov/enviro/forms/contact-us-about-envirofacts Files are organized here into zip files by FAR Subpart. Please see the readme.txt file for additional details and limitations. The GHGRP requires reporting of greenhouse gas (GHG) data and other relevant information from large GHG emission sources, fuel and industrial gas suppliers, and CO2 injection sites in the United States. Approximately 8,000 facilities are required to report their emissions annually, and the reported data are made available to the public in October of each year. [Quote from: https://www.epa.gov/ghgreporting] GHG data is available for search, query, and download via a variety of Federal web page user interfaces and APIs including: Search/Query: https://enviro.epa.gov/envirofacts/ghg/search GraphQL API: https://www.epa.gov/enviro/dmap-graphql-api Other APIs: https://www.epa.gov/enviro/envirofacts-web-services Note that the data available via the FLIGHT interface: https://ghgdata.epa.gov/ghgp/main.do is closely related to the data archived here and probably a derivative of this data. But the FLIGHT data files are not included in this archive. Those files, having been received via a FOIA request, are archived here separately. As of this update (16 Sept 2025), their archive has not yet been published but should be shortly. Simply search for FLIGHT and you may find it.

This web feature service contains location and facility identification information from EPA's Facility Registry Service (FRS) for the subset of facilities that link to the Risk Management Plan (RMP) System. The Risk Management Plan (RMP) database stores the risk management plans reported by companies that handle, manufacture, use, or store certain flammable or toxic substances, as required under section 112(r) of the Clean Air Act (CAA). FRS identifies and geospatially locates facilities, sites or places subject to environmental regulations or of environmental interest. Using vigorous verification and data management procedures, FRS integrates facility data from EPA's national program systems, other federal agencies, and State and tribal master facility records and provides EPA with a centrally managed, single source of comprehensive and authoritative information on facilities. This data set contains the subset of FRS integrated facilities that link to RMP facilities once the RMP data has been integrated into the FRS database. Additional information on FRS is available at the EPA website https://www.epa.gov/enviro/facility-registry-service-frs.

The Toxic Release Inventory System (TRIS) is a publicly available EPA database reported annually by certain covered industry groups, as well as federal facilities. It contains information about more than 650 toxic chemicals that are being used, manufactured, treated, transported, or released into the environment, and includes information about waste management and pollution prevention activities.Full Metadata: http://edg.epa.gov/metadata/catalog/search/resource/details.page?uuid=%7BFA9226D4-30CB-4DC5-AEA9-FCB2A03CA7C5%7D

ECHO provides integrated compliance and enforcement information for about 800,000 regulated facilities nationwide. Its features range from simple to advanced, catering to users who want to conduct broad analyses as well as those who need to perform complex searches. Enforcement and compliance data are available for air emissions, surface water discharges, hazardous waste, and drinking water systems. ECHO includes EPA, state, local and tribal environmental agency compliance and enforcement records that are contained in EPA national databases. ECHO also incorporates many EPA environmental data sets to provide additional context for analyses.

This layer includes data for Resource Conservation and Recovery Act (RCRA) Hazardous Waste (Subtitle C) regulated facilities from Enforcement and Compliance History Online (ECHO). The data provided supports the ECHO Hazardous Waste Facility search https://echo.epa.gov/facilities/facility-search?mediaSelected=rcra which focuses on inspection, compliance and enforcement data, and is updated automatically every weekend. The primary data source is the RCRAInfo database. ECHO also adds to this data for better context information such as federal agency and proximity to tribal lands from the Facility Registry System (FRS), demographics based on 2010 and 2020 Census.

ToxRefDB was developed by the National Center for Computational Toxicology (NCCT) in partnership with EPA's Office of Pesticide Programs (OPP), to store data from in vivo animal toxicity studies. The database:

-Contains pesticide registration toxicity data that used to be stored as hard-copy and scanned documents by OPP. -Currently includes chronic, cancer, sub-chronic, developmental, and reproductive studies on hundreds of chemicals (many are pesticide active ingredients). -Provides data that is accessible and computable. -Provides reference toxicity data for Agency research and retrospective analyses. -Provides toxicity endpoints for development of ToxCast predictive signatures that will be used for primary research applications. -Contains only certain hazard information and does not represent all information needed for a complete risk assessment for pesticides or other chemicals. -Effect designation should not be taken as determination that existing EPA risk assessments and risk management decisions need revisions.

For example, in addition to studies in ToxRefDB, for purposes of registration or tolerance determination, EPA evaluated information on other mammalian toxicity effects, metabolism, aquatic life, wildlife and plant toxicity studies, and use patterns, environmental fate and persistence, and pesticide residue levels.

EPA’s Distributed Structure-Searchable Toxicity (DSSTox) database contains curated chemical substances mapped to data including chemical identifiers (i.e., chemical synonyms, systematic names, CAS Registry Numbers and others) and, where appropriate, chemical structure representations. The goal for DSSTox is to accurately represent chemical substances, their structures and identifiers, as well as relevant chemical lists which are important to the environmental research and regulatory community. DSSTox provides the chemical and chemistry underpinning for EPA’s computational toxicology and exposure online applications including the CompTox Chemicals Dashboard, EcoTox Knowledgbase, GenRa, and more. DSSTox data is publicly accessible through these online software applications, a public API and these downloadable excel/csv file. There are several excel files which can be downloaded from this page. Collectively, these excel files include a listing of the over 1.2 million chemicals in the EPA CompTox Chemicals Dashboard. The files list each chemical and provide the mapping of the chemical to CAS RN, INCHIKEY, IUPAC-Name, SMILES, Molecular Formulae, Average Mass, Monoisotopic Mass, QSAR-Ready SMILES, MS-Ready SMILES and Identifiers.Dataset originally posted on 10/21/2021Science Inventory, CCTE products: https://cfpub.epa.gov/si/si_public_search_results.cfm?advSearch=true&showCriteria=2&keyword=CCTE&TIMSType=&TIMSSubTypeID=&epaNumber=&ombCat=Any&dateBeginPublishedPresented=07/01/2017&dateEndPublishedPresented=&dateBeginUpdated=&dateEndUpdated=&DEID=&personName=&personID=&role=Any&journalName=&journalID=&publisherName=&publisherID=&sortBy=pubDate&count=25

The Envirofacts Data Warehouse contains information from select EPA Environmental program office databases and provides access about environmental activities that may affect air, water, and land anywhere in the United States. The Envirofacts Warehouse supports its own web enabled tools as well as a host of other EPA applications.

The Facility Registry Service (FRS) provides quality facility data to support EPA's mission of protecting human health and the environment by identifying and geospatially locating facilities, sites, or places subject to environmental regulations of environmental interest. Facility data is improved with geospatial processing of incoming data and data curation tools to provide an integrated, dataset to partners and the public through a variety of methods and products. For more detailed information about these facilities, use the FRS Query tool. This layer provides facility information for the Toxic Release Inventory (TRI). TRI is EPA's publicly available database that contains more than 650 toxic chemicals that are being used by industry groups and federal facilities, manufactured, treated, transported, or released into the environment. For more information on TRI and TRI facilities, visit the TRI Search tool.

This submission includes data files released in response to FOIA request #2025-EPA-04342 made in the Summer of 2025. The release also included source code that is currently archived at: https://github.com/Public-Environmental-Data-Partners/FLIGHT_foia_code Because the CSV files included in this release may well be useful to researchers without needing to go through the published interface, they are being archived here separately from the EPA code. Note that, in addition to the csv files received in response to the FOIA request, this repository contains facility detail xml files for 115,000+ unique facility_id/year combinations. FLIGHT data represents "Greenhouse Gas (GHG) Emissions Data from Large Facilities" only and "does not reflect total U.S. GHG emissions." The official FLIGHT site is: https://ghgdata.epa.gov/ghgp/main.do Various versions of EPA GHG data have been separately archived in multiple Dataverse entries. Try searching for GHG or go directly to this believed-to-be-comprehensive set of raw data files exported from the database: https://dataverse.harvard.edu/dataset.xhtml?persistentId=doi:10.7910/DVN/6V0F7S If you have questions about the underlying data stored here, please contact the EPA directly. See: https://www.epa.gov/aboutepa/forms/contact-epa If you have questions or recommendations related to this metadata entry and extracted data, please contact the CAFE Data Management team at: climatecafe@bu.edu.

The EPA CPCat (Chemical and Product Categories) database was released in May 2014. It maps

43,000 chemicals to a set of terms categorizing their usage or function. We have compiled a comprehensive list of chemicals with associated categories of chemical and product use by compiling publicly available sources. Sources include, but are not limited to: the Substances in Preparation in Nordic Countries (SPIN) database, information provided by companies, trade associations, and regulatory agencies such as the U.S. Environmental Protection Agency (EPA) and Food and Drug Administration (FDA), the DrugBank database of pharmaceutical products, and information mined from the Aggregated Computational Toxicology Resource (ACToR) database developed by the U.S. EPA. Unique use category taxonomies from each source are mapped onto a single common set of ~800 terms. The user can search for chemicals by chemical name, Chemical Abstracts Registry Number (CASRN), or by CPCat terms (i.e. category names) associated with chemicals. See Dionisio et al., 2014 for a full description of the database, sources used, interpretation of chemical categories, and potential applications. The .zip file available at the "Download" tab of this website provides a full copy of the database, available for free download, which can be freely searched and sorted for data analysis. The .zip file includes a list of all chemicals included in CPCat. A list of all sources included in CPCat is provided in the table below.

The purpose of ICIS is to meet evolving Enforcement and Compliance business needs for EPA and State users by integrating information into a single integrated data system that supports both management and programmatic requirements of the Enforcement and Compliance programs.

This layer includes data for Clean Water Act (CWA) National Pollutant Discharge Elimination System (NPDES) regulated facilities from Enforcement and Compliance History Online (ECHO). The data provided supports the ECHO Water Facility search https://echo.epa.gov/facilities/facility-search?mediaSelected=cwa which focuses on inspection, compliance and enforcement data and is updated automatically every weekend. The primary data source is the Integrated Compliance Information System (ICIS) NPDES module. ECHO also adds to this data for better context information such as federal agency and proximity to tribal lands from the Facility Registry System (FRS), and water quality data from the Office of Water ATTAINS database.

Benthic Grab Information, Benthic Replicate Abundance data, Benthic Summary Data by station characterize the benthic grab data from samples collected in National Coastal Assessment (NCA) Estuaries. These data were collected from 2000-2004 for the marine coastal states of the contiguous United States, Alaska, Hawaii, and the US territories of Puerto Rico and the Virgin Islands.

The US Environmental Protection Agency’s (EPA) Distributed Structure-Searchable Toxicity (DSSTox) database, launched publicly in 2004, currently exceeds 875 K substances spanning hundreds of lists of interest to EPA and environmental researchers. From its inception, DSSTox has focused curation efforts on resolving chemical identifier errors and conflicts in the public domain towards the goal of assigning accurate chemical structures to data and lists of importance to the environmental research and regulatory community. In 2014, the legacy, manually curated DSSTox_V1 content was migrated to a MySQL data model, with modern cheminformatics tools supporting both manual and automated curation processes to increase efficiencies. Currently, DSSTox serves as the core foundation of EPA’s CompTox Chemicals Dashboard [https://comptox.epa.gov/dashboard], which provides public access to DSSTox content in support of a broad range of modeling and research activities within EPA and, increasingly, across the field of computational toxicology. This dataset is associated with the following publication: Grulke, C., A. Williams, I. Thillainadarajah, and A. Richard. EPA’s DSSTox database: History of development of a curated chemistry resource supporting computational toxicology research. Computational Toxicology. Elsevier B.V., Amsterdam, NETHERLANDS, 12: 100096, (2019).

Note: Please use the following view to be able to see the entire Dataset Description: https://data.ct.gov/Environment-and-Natural-Resources/Hazardous-Waste-Portal-Manifest-Metadata/x2z6-swxe

Dataset Description Outline (5 sections)

• INTRODUCTION

• WHY USE THE CONNECTICUT OPEN DATA PORTAL MANIFEST METADATA DATASET INSTEAD OF THE DEEP DOCUMENT ONLINE SEARCH PORTAL ITSELF?

• WHAT MANIFESTS ARE INCLUDED IN DEEP’S MANIFEST PERMANENT RECORDS ARE ALSO AVAILABLE VIA THE DEEP DOCUMENT SEARCH PORTAL AND CT OPEN DATA?

• HOW DOES THE PORTAL MANIFEST METADATA DATASET RELATE TO THE OTHER TWO MANIFEST DATASETS PUBLISHED IN CT OPEN DATA?

• IMPORTANT NOTES

INTRODUCTION • All of DEEP’s paper hazardous waste manifest records were recently scanned and “indexed”. • Indexing consisted of 6 basic pieces of information or “metadata” taken from each manifest about the Generator and stored with the scanned image. The metadata enables searches by: Site Town, Site Address, Generator Name, Generator ID Number, Manifest ID Number and Date of Shipment. • All of the metadata and scanned images are available electronically via DEEP’s Document Online Search Portal at: https://filings.deep.ct.gov/DEEPDocumentSearchPortal/ • Therefore, it is no longer necessary to visit the DEEP Records Center in Hartford for manifest records or information. • This CT Data dataset “Hazardous Waste Portal Manifest Metadata” (or “Portal Manifest Metadata”) was copied from the DEEP Document Online Search Portal, and includes only the metadata – no images.

WHY USE THE CONNECTICUT OPEN DATA PORTAL MANIFEST METADATA DATASET INSTEAD OF THE DEEP DOCUMENT ONLINE SEARCH PORTAL ITSELF? The Portal Manifest Metadata is a good search tool to use along with the Portal. Searching the Portal Manifest Metadata can provide the following advantages over searching the Portal: • faster searches, especially for “large searches” - those with a large number of search returns unlimited number of search returns (Portal is limited to 500); • larger display of search returns; • search returns can be sorted and filtered online in CT Data; and • search returns and the entire dataset can be downloaded from CT Data and used offline (e.g. download to Excel format) • metadata from searches can be copied from CT Data and pasted into the Portal search fields to quickly find single scanned images. The main advantages of the Portal are: • it provides access to scanned images of manifest documents (CT Data does not); and • images can be downloaded one or multiple at a time.

WHAT MANIFESTS ARE INCLUDED IN DEEP’S MANIFEST PERMANENT RECORDS ARE ALSO AVAILABLE VIA THE DEEP DOCUMENT SEARCH PORTAL AND CT OPEN DATA? All hazardous waste manifest records received and maintained by the DEEP Manifest Program; including: • manifests originating from a Connecticut Generator or sent to a Connecticut Destination Facility including manifests accompanying an exported shipment • manifests with RCRA hazardous waste listed on them (such manifests may also have non-RCRA hazardous waste listed) • manifests from a Generator with a Connecticut Generator ID number (permanent or temporary number) • manifests with sufficient quantities of RCRA hazardous waste listed for DEEP to consider the Generator to be a Small or Large Quantity Generator • manifests with PCBs listed on them from 2016 to 6-29-2018. • Note: manifests sent to a CT Destination Facility were indexed by the Connecticut or Out of State Generator. Searches by CT Designated Facility are not possible unless such facility is the Generator for the purposes of manifesting.

All other manifests were considered “non-hazardous” manifests and not scanned. They were discarded after 2 years in accord with DEEP records retention schedule. Non-hazardous manifests include: • Manifests with only non-RCRA hazardous waste listed • Manifests from generators that did not have a permanent or temporary Generator ID number • Sometimes non-hazardous manifests were considered “Hazardous Manifests” and kept on file if DEEP had reason to believe the generator should have had a permanent or temporary Generator ID number. These manifests were scanned and included in the Portal.

Dates included: manifests with shipment dates from 1980 to present • States were the primary keepers of manifest records until June 29, 2018. Any manifest regarding a Connecticut Generator or Destination Facility should have been sent to DEEP, and should be present in the Portal and CT Data. • June 30, 2018 was the start of the EPA e-Manifest program. Most manifests with a shipment date on and after this date are sent to, and maintained by the EPA. • For information from EPA regarding these newer manifests: • Overview: https://rcrapublic.epa.gov/rcrainfoweb/action/modules/em/emoverview • To search by site, use EPA’s Sites List: https://rcrapublic.epa.gov/rcrainfoweb/action/modules/hd/handlerindex (Tip: Change the Location field from “National” to “Connecticut”) • Manifests still sent to DEEP on or after 6-30-2018 include: • manifests from exported shipments; and • manifest copies submitted pursuant to discrepancy reports and unmanifested shipments.

HOW DOES THE PORTAL MANIFEST METADATA RELATE TO THE OTHER TWO MANIFEST DATASETS PUBLISHED IN CT DATA? • DEEP has posted in CT Data two other datasets about the same hazardous waste documents which are the subject of the Portal and the Portal Manifest Metadata Copy. • There are likely some differences in the metadata between the Portal Manifest Metadata and the two others. DEEP recommends using all data sources for a complete search. • These two datasets were the best search tool DEEP had available to the public prior to the Portal and the Metadata Copy: • “Hazardous Waste Manifest Data (CT) 1984 – 2008” https://data.ct.gov/Environment-and-Natural-Resources/Hazardous-Waste-Manifest-Data-CT-1984-2008/h6d8-qiar; and • “Hazardous Waste Manifest Data (CT) 1984 – 2008: Generator Summary View” https://data.ct.gov/Environment-and-Natural-Resources/Hazardous-Waste-Manifest-Data-CT-1984-2008-Generat/72mi-3f82.
• The only difference between these two datasets is: • the first dataset includes all of the metadata transcribed from the manifests. • the second “Generator Summary View” dataset is a smaller subset of the first, requested for convenience by the public. Both of these datasets: • Are copies of metadata from a manifest database maintained by DEEP. No scanned images are available as a companion to these datasets. • The date range of the manifests for these datasets is 1984 to approximately 2008.

IMPORTANT NOTES (4): NOTE 1: Some manifest images are effectively unavailable via the Portal and the Portal Metadata due to incomplete or incorrect metadata. Such errors may be the result of unintentional data entry error, errors on the manifests or illegible manifests. • Incomplete or incorrect metadata may prevent a manifest from being found by a search. DEEP is currently working to complete the metadata as best it can. • Please report errors to the DEEP Manifest Program at deep.manifests@ct.gov. • DEEP will publish updates regarding this work here and through the DEEP Hazardous Waste Advisory Committee listserv. To sign up for this listserv, visit this webpage: https://portal.ct.gov/DEEP/Waste-Management-and-Disposal/Hazardous-Waste-Advisory-Committee/HWAC-Home. NOTE 2: This dataset does not replace the potential need for a full review of other files publicly available either on-line and/or at CT DEEP’s Records Center. For a complete review of agency records for this or other agency programs, you can perform your own search in our DEEP public file room located at 79 Elm Street, Hartford CT or at our DEEP Online Search Portal at: https://filings.deep.ct.gov/DEEPDocumentSearchPortal/Home. NOTE 3: Other DEEP programs or state and federal agencies may maintain manifest records (e.g., DEEP Emergency Response, US Environmental Protection Agency, etc.) These other manifests were not scanned along with those from the Manifest Program files. However, most likely these other manifests are duplicate copies of manifests available via the Portal. NOTE 4: search tips for using the Portal and CT Data: • If your search will yield a small number of search returns, try using the Portal for your search. “Small” is meant to mean fewer than the 500 maximum search returns allowed using the Portal. • Start your search as broadly as possible – try entering just the town and the street name, or a portion of the street name that is likely to be spelled correctly • For searches yielding a large number of search returns, try using first the Portal Manifest Metadata in CT Data. • Try downloading the metadata and sorting, filtering, etc. the data to look for related spellings, etc. • Once you narrow down you research, copy the manifest number of a manifest you are interested in, and paste it into the Agency ID field of the Portal search page. • If you are using information from older information sources for consistency, you may want to search the two datasets copied from the older DEEP Manifest Database.

This Excel macro-enabled workbook contains a list of chemicals affecting the nervous system. The construction of the file is described in the manuscript “Connecting Environmental Exposure and Neurodegeneration using Cheminformatics and High Resolution Mass Spectrometry: Potential and Challenges” available at http://doi.org/10.1039/C9EM00068B. The chemicals are MeSH terms and the links to the nervous system are determined by co-occurrences of MeSH terms in PubMed. DSSToxIDs and CAS are added where available.

A database where EPA has compiled data on public drinking water systems and whether they have certain drinking water violations. This data is collected by the states and given to the EPA.

This dataset is associated with the following publication: Pennino, M., J. Compton, and S. Leibowitz. Trends in Drinking Water Nitrate Violations Across the United States. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, USA, 13450-13460, (2017).

This map service contains GIS data from the EPA Office of Water 305(b) Assessed Waters Program. The information supporting this service resides in the Reach Address Database (RAD) which is part of the Watershed Assessment, Tracking & Environmental Results System (WATERS).The 305(b) program system provide assessed water data and assessed water features for river segments, lakes, and estuaries designated under Section 305(b) of the Clean Water Act. 305(b) waterbodies are coded onto NHDPlus v2.1 features creating area, point and linear events representing assessed and non-assessed waters. In addition to NHDPlus reach indexed data there may also be custom events (point, line, or area) that are not associated with NHDPlus and are in an EPA standard format that is compatible with EPA's Reach Address Database. These custom events are used to represent locations of 305(b) waterbodies that are not represented well in NHDPlus. To identify the spatial extent of waters listed under the 305(b) program attributed as being assessed in the ATTAINS database, these waters can be linked to the 305(b) information stored in the EPA's Assessment and TMDL Tracking and Implementation System (ATTAINS) for query and display. Use the Source_FeatureID field and Cycle_Year field to link indexed assessed waters to the EPA's ATTAINS Database. For complete metadata, please use EPA's Environmental Data Gateway (EDG): https://edg.epa.gov/metadata/catalog/search/resource/details.page?uuid=%7B81060F20-4F5C-42E2-BBC7-CD96E442B8FA%7D.