Science & Technology
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Nitrogen Dioxide/Nitrogen Oxide In-Stack Ratio (ISR) Database
The EPA’s Guideline on Air Quality Models, Appendix W to 40 CFR Part 51, recommends a three-tiered screening approach to estimate ambient concentrations of Nitrogen Dioxide (NO2).
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Air Modeling - Observational Meteorological Data
Observed meteorological data for use in air quality modeling consist of physical parameters that are measured directly by instrumentation, and include temperature, dew point, wind direction, wind speed, cloud cover, cloud layer(s), ceiling height,
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Air Quality Model Clearinghouse
The Model Clearinghouse is a focal point for interpretation of modeling guidance in specific regulatory applications.
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Chemical Mass Balance (CMB) Model
The EPA-CMB Version 8.2 uses source profiles and speciated ambient data to quantify source contributions. Contributions are quantified from chemically distinct source-types rather than from individual emitters.
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Download COBRA
Download the COBRA (Co-Benefits Risk Assessment) screening tool to explore the health and economic benefits of policies that affect air pollution.
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P2 Case Study, How One Facility Completely Eliminated the Use of TCE. Schick Razor Blade Manufacturing in Knoxville, Tennessee
P2 Case Study. How One Facility Completely Eliminated the Use of TCE. Schick Razor Blade Manufacturing in Knoxville, Tennessee.
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State and Association Websites with Air Test Method and Monitoring Information
Government and association websites that include methods and testing information.
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The Basics of Water Remediation
This web-page that describes the high-level fundamentals of the Characterization, Decontamination, and Clearance.
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EPA ExpoBox and Exposure Factors
This page explains how Exposure factors are a vital resource on the EPA ExpoBox site and how it can be used. Links to the EFH by chapter, latest chapter updates and a searchable data tables database.
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Everglades Ecosystem Assessment: Water Management and Quality, Eutrophication, Mercury Contamination, Soils and Habitat - EPA 904-R-07-001, August 2007
This report summarizes the results for the Program and 2005 Phase III biogeochemical sampling. This survey documented ecological condition for the 2,063-square-mile freshwater portion of the Everglades Protection Area.
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Summary of Florida’s Water Reuse Guideline or Regulation for Onsite Non-potable Water Reuse
Florida (State Regulation) | Source water: Onsite collected waters | End use: Onsite non-potable water reuse
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Summary of the World Health Organization's Water Reuse Guideline or Regulation for Potable Water Reuse
World Health Organization (Federal Regulation) | Source water: Treated municipal wastewater | End use: Potable Water Reuse
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Summary of Singapore's Water Reuse Guideline or Regulation for Industry
Singapore (Federal Regulation) | Source water: Treated municipal wastewater | End use: Water reuse for industry
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Summary of Singapore's Water Reuse Guideline or Regulation for Potable Water Reuse
Singapore (Federal Regulation) | Source water: Treated municipal wastewater | End use: Potable Water Reuse
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Guidelines for Water Reuse
Information related to Guidelines for Water Reuse.
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EPA Open Data Metadata Editor Guidance
This page is guidance for completing the Open Data Metadata Editor metadata requirements.
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Privacy Requirements
Information about how EPA systems/applications that collect PII must comply with EPA's Privacy Policy
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Electronic Signature Requirements
Basic information about providing electric signatures in EPA applications, electronic workflow tools and other business processes
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Security Requirements
Basic information about federal information security requirements and standards
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Section 508/Accessibility Requirements
Overview of section 508 procedures in regards to the development of applications and websites