Data and Tools
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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.
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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.
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Centrifugal Compressors
A centrifugal compressor is used to increase the pressure of natural gas in pipelines. Centrifugal compressors contain rotating shafts that require seals to prevent the high-pressure natural gas from escaping the compressor casing.
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Route Blowdown Gas to Low Pressure System
Rerouting blowdown gas (from stations, equipment, or pipelines) to an existing low-pressure gas system can reduce the amount of high-pressure natural gas that would otherwise be emitted to the atmosphere.
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Reroute Glycol Skimmer Gas
Some glycol dehydrators use condensate separators to recover natural gas liquids and the non-condensable gas (or skimmer gas) is often vented to the atmosphere. Rerouting the skimmer gas to the reboiler firetubes can reduce emissions.
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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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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.
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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.”
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Contracting Best Practices: Incentives and Penalties
Best practices for Zero Waste Contracting - Incentives and Penalties
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Contracting Best Practices
A wide range of contracting strategies designed to advance towards zero waste are being used by local governments.
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Procurement Best Practices: Publicly Owned Facilities
Best procurement practices developed from zero waste case studies - publicly owned facilities
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EPA Recovery Act Notice on Civil Rights Obligations Applicable to the Distribution of Funds under the American Recovery and Reinvestment Act of 2009
EPA Recovery Act notice to inform that Federal agencies will shortly begin distributing funding from the American Recovery and Reinvestment Act of 2009 (Recovery Act).
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Summary of Radiological Stormwater Modeling Research
EPA is leading stormwater modeling studies that investigate how to simulate transport of radiological contamination in urban stormwater. Several publications are available to assist with more informed decisions after a radiological disaster.
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Quality Assurance Handbook and Toolkit for Participatory Science Projects
This Handbook is targeted to organizations that are starting or growing a citizen science project, and where transparency in the scientific methods for collecting the data are central to the outcome of the project.
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Analysis of Hydraulic Fracturing Fluid Data from the FracFocus Chemical Disclosure Registry 1
The EPA analyzed data from the FracFocus Chemical Disclosure Registry 1.0 to better understand the chemicals and water used to hydraulically fracture oil and gas production wells across the United States.
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AVERT Tutorial: Getting Started – Identify Your AVERT Region(s)
Allows you to identify your AVERT regions.
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Accounting Fundamentals for Non-Accountants
The purpose of this module is to provide an introduction and overview of accounting fundamentals for non-accountants. The module also covers important topics such as communication, internal controls, documentation and recordkeeping.
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Sampling Methods and Decontamination Technologies
Page to provide utilities with sampling methods and technologies for decontamination incidents.
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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.
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Documents to Guide Remediation
Page for utilities to access resources to support remediation activities to prepare for or respond to a contamination event.