Science & Technology

National Study of Nutrient Removal - Fact Sheets

Fact sheets describing examples of low-cost adjustments to sewage treatment plants to reduce nutrient pollutant discharges

ECM for Abamectin / Avermectins in Soil - MRID 42900002

Environmental Chemistry Methods for Abamectin / Avermectins in Soil - MRID 42900002

ECM for Fluometuron & Degradates in Water - MRID 50556602

Environmental Chemistry Methods for Fluometuron & Degradates MRID 50556602

ECM for Metam Degradate DMU in Soil - MRID 41514401

Environmental Chemistry Methods for Metam Degradate DMU in Soil - MRID 41514401

ECM for Bromadiolone in Soil - MRID 51185102

Environmental Chemistry Methods for Bromadiolone in Soil - MRID 51185102

ECM for Fluometuron & Degradates in Soil - MRID 50556601

Environmental Chemistry Methods for Fluometuron & Degradates in Soil - MRID 50556601

Developing Technologies for Satellite Water Quality Monitoring

Analysis of Water Quality Data for Satellite Validation Efforts

Well Plugging

A reduced emissions completion (REC) is a practice that employs equipment to capture gas produced during well completions following hydraulic fracturing and deliver it to the sales line. Compared to traditional completions, RECs reduce methane emissions.

Pressurized Storage Tank

Replacing an atmospheric pressure storage tank with a pressurized storage tank can significantly reduce emissions of methane and volatile organic compounds (VOCs).

Plunger Lift System Without Planned Atmospheric Venting

Installing a plunger lift system is an effective method for removing accumulated liquids and restoring gas pressure. Plunger lift systems without planned venting eliminate the emissions associated with well blowdowns used to remove the accumulated liquid.

Pipeline Hot Taps

Hot tapping is a procedure used to make a new pipeline connection while the pipeline remains in service, flowing natural gas under pressure. The operator can make a new connection without having to shut down the pipeline or performing pipeline blowdown.

Mechanical Controllers

Replacing natural gas-powered pneumatic controllers with mechanical controllers can reduce methane emissions.

Electric Glycol Circulation Pumps

Replacing a gas-assist glycol circulation pump with an electric glycol circulation pump avoids the emissions from the assist gas.

Electric Compressor Motors

Electric Compressor Motors: Installing an electric motor, in place of a gas-fired engine, can reduce methane emissions, increase operational efficiency, and reduce maintenance costs.

Desiccant Dehydrators

Replacing glycol dehydrators with desiccant dehydrators that use moisture absorbing salts to remove water reduces dehydrator emissions and also results in lower operating and maintenance costs.

Air Starters

Air Starters use compressed air, instead of natural gas, to start internal combustion engines for compressors, generators, and pumps. This mitigation option eliminates methane emissions from engine start-ups.

Advanced Methane Detection

Well Completions and Workovers

Well completion is the process of bringing an oil or gas well into production. Completion steps involve casing, cementing, perforating, hydraulically fracturing in the reservoir, expelling fluids, and installing the production valve.

Compressor Station Blowdowns

Compressor stations are taken offline (depressurized) for operational or maintenance needs. To take a compressor station offline, station or unit isolation valves are closed and the gas within the compressors is vented to the atmosphere (i.e., blowdown).

Compressor Starts

Compressors driven by gas engines are often equipped with small gas expansion turbine motors to start the engine. These motors initiate startup of the engine with expansion of pressurized gas across the starter turbine; that gas is then vented.