Science & Technology

Approval of New Testing Procedures for Measurement of Stack Gas Flow Rate for Optional Application in Place of Method 2 under 40 CFR Parts 60, 61, and 63

memo for use of method 2f,2g,2h

Summary of Comments on Test Methods Amendments Proposed in the Federal Register on August 27, 1997

(EPA) proposed amendments to 40 CFR Parts 60, 61, and 63 to reflect miscellaneous editorial changes and technical corrections throughout the parts in sections pertaining to source testing or monitoring of emissions and operations and added Performance Spec

Emissions Monitoring and Reporting

Learn how to provide complete and accurate monitoring, reporting, and auditing of sulfur dioxide (SO20, carbon dioxide (CO2), nitrogen oxide (NOx), and mercury (Hg) emissions.

Flash Tank Separators

During the dehydration process, glycol absorbs methane, volatile organic compounds (VOCs), and hazardous air pollutants (HAPs) from the wet gas. A flash tank separator can be used in the dehydration process to remove the gas absorbed by glycol.

Technical Overview of Ecological Risk Assessment - Analysis Phase: Exposure Characterization

Exposure Characterization is the second major component of the analysis phase of a risk assessment. For a pesticide risk assessment, the exposure characterization describes the potential or actual contact of a pesticide with a plant, animal, or media.

Total Risk Integrated Methodology (TRIM) Air Pollutants Exposure Model Documentation (TRIM.Expo / APEX, Version 4.5)

The Air Pollutants Exposure model (APEX) is part of EPA’s overall Total Risk Integrated Methodology (TRIM) model framework (EPA, 1999).

Total Risk Integrated Methodology (TRIM) Air Pollutants Exposure Model Documentation (TRIM.Expo / APEX, Version 4.3)

The Air Pollutants Exposure model (APEX) is part of EPA’s overall Total Risk Integrated Methodology (TRIM) model framework (EPA, 1999).

PEST

PEST (Parameter ESTimation) software. PEST is a model-independent parameter estimation package which can communicate with any model through the model's own input and output files. Apr. 2003

Hydromodification and Habitat Alteration: National Management Measures

This guidance document provides technical assistance to states, territories, tribes, and the public for managing hydromodification activities and reducing associated NPS pollution of surface and ground water. The document describes

Webinar: Don’t Waste the Heat!

LMOP webinar on September 28, 2021 about the use of waste heat from landfill gas energy projects.

Discussion about Potential Distribution System Problems

Distribution System White Papers

EPA worked with stakeholders and developed a series of "white papers" on distribution system issues ranked of potentially significant public health concern (see list below) to serve as background material for EPA, expert and stakeholder discussions.

Vehicle Miles Travelled Offset Demonstration Guidance

Provide guidance to state and local air quality agencies to support meeting the requirements of Clean Air Act Section 182(d)(1)(A) for a Vehicle Miles Travelled (VMT) Offset Demonstration.

Urban Waters and the Anacostia Watershed (Washington, DC/Maryland)

This page provides background information on the Anacostia River area one of the 18 Designated Urban Waters Locations.

NEOS AB3000

Technical product bulletin: this hydrocarbon solvent based dispersant used in oil spill cleanups can be sprayed neat on the oil slick in atomized form. Effective with crude and residual heavy oil, and also at controlling volatile emissions.

NPDES PGP eNOI Tutorials

EPA has developed tutorials to walk you through the process of submitting NOIs, NOTs and Annual Reports.

OSR-10

Technical product bulletin: this surface washing agent used in spill cleanups separates the oil from the physical surface, which includes shorelines, rocks, and beaches, to allow it to be sprayed off with a water rinse.

PETRO-CLEAN

Technical product bulletin: this surface washing agent used in oil spill cleanups on rocks, shorelines, sea walls, bridges, and highways. It is effective when applied through power washers or garden type sprayers in light dilution.

PETROMAX PSC 3

Technical product bulletin: this surface washing agent used in oil spill cleanups reverses the charge of the sand particles holding the hydrocarbons so they repel each other - the separated hydrocarbons can then be easily removed.

PETROTECH 25

technical product bulletin: this surface washing agent used in oil spill cleanups is generally applied neat in its factory supplied concentrate form. For lighter oils, with educting or proportioning equipment, an aqueous solution may be used.