Data and Tools

This page shows all of the pages at www.epa.gov that are tagged with Data and Tools.

  • Ambient Water Quality Tools

    Tools that track water quality data and their impacts to the environment and human health.

  • Fish Images to Use with Fish Advisories

    The U.S. Environmental Protection Agency developed a set of images to convey fish parts that should not be eaten to reduce possible exposure to chemicals among fish-eating populations.

  • Sign into Siteimprove - EPA's QA Tool

    Login to Siteimprove with your PIV card, where you can see quality assurance scores and reports for your web area including broken links and misspellings, accessibility issues such as headings and links, and other usability issues you can improve.

  • Experiencing WebCMS Issues?

    Instructions for things to try before contacting WebCMS Support if you think the WebCMS is slow

  • Tribal Community-Based Social Marketing Training Guide

    The Community-Based Social Marketing (CBSM) Training Guide and recycling toolkit provides an overview of how to increase the adoption of sustainable behaviors and recycling practices with a community.

  • Videos: EPA Research Collaborations with State Partners

    This webpage contains YouTube videos highlighting EPA ORD Collaborations with State Partners.

  • AgSTAR: Biogas Recovery in the Agriculture Sector

    AgSTAR promotes biogas recovery projects, which generate renewable energy and other beneficial products from the anaerobic digestion of livestock manure and organic wastes while decreasing greenhouse gas emissions from the agriculture sector.

  • RSIG3D Local/Remote CMAQ File Reader

    RSIG3D instructions for reading local and/or remote CMAQ files

  • Vapor Recovery Units

    Vapor recovery units (VRUs) are commonly used to capture methane emissions from storage tanks and a variety of other low pressure sources such as pipeline pigging operations, compressors, and dehydrators.

  • Engine Exhaust

    Natural gas-fired engines and turbines are used to run compressors throughout the natural gas value chain. In many operations, the natural gas stream is used to power these engines and turbines. Methane emissions result from incomplete combustion.

  • Glycol Dehydrators

    Glycol dehydrators are used to remove water from gas. The glycol absorbs water and methane when contacted with the wet gas. Glycol is then regenerated, where absorbed methane is vented to the atmosphere along with the water vapor.

  • Equipment Leaks

    Equipment leaks, commonly referred to as fugitive emissions, are characterized as unintentional emissions. Leaks occur from equipment components such as connectors, valves, open-ended lines, pressure relief valves, and storage tank thief hatches.

  • Methanol Injection

    Replacing a glycol dehydrator with methanol injection inhibits hydrate formation and eliminates dehydrator emissions.

  • Storage Tanks

    Storage tanks are used to hold oil and gas condensate and operate near atmospheric pressure. Gases dissolved in the oil and condensate 'flash' out of the liquid phase. These vapors, rich in methane, may be vented to the atmosphere.

  • Optimize Glycol Circulation

    During the glycol regeneration process, absorbed methane is vented at a rate directly proportional to the glycol circulation. Optimization of glycol circulation rates can reduce methane emissions at negligible cost.

  • Pipeline Pig Launching and Receiving

    Pipeline pigging is the practice of cleaning and/or inspecting pipelines. During pigging operations, the pig is inserted into the pipeline and is forced through by pipeline pressure or by using compressed gas.

  • Reciprocating Compressors

    A reciprocating compressor is used to increase the pressure of natural gas in pipelines. Reciprocating compressors vent natural gas from piston rod packing systems during normal operation.

  • Liquids Unloading

    Accumulation of liquids (i.e., water and hydrocarbons) in a mature gas well can slow down gas production. To increase gas production, the liquids must be cleared from the well. Removing the liquids is commonly referred to as “liquids unloading.”

  • Pneumatic Controllers

    Natural gas-powered pneumatic controllers are used in the natural gas industry to operate valves that control liquid level, pressure, and other processes. Some controllers are designed to bleed continuously, while others may bleed gas only when actuated.

  • Pipeline Blowdowns

    Pipeline blowdowns are routine operations on transmission and distribution systems to allow operators to safely perform maintenance. This practice involves isolating and depressurizing a section of the pipeline and venting the gas to the atmosphere.

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