Air Monitoring and Abatement— Oil and Gas Field Hydrogen Sulfide Gas Emissions


Rapid identification of worker exposure levels and development of abatement strategy to support successful lease agreements with federal agencies.


Landmark provided air monitoring and abatement services to a major oil and gas production company for hydrogen sulfide emissions emanating from Pressure Integrity Events at an oil field site located in Wyoming. These emissions posed a significant potential worker exposure health threat.

Air monitoring was performed to assess for carbon dioxide (CO2), hydrogen sulfide (H2S), oxygen (O2), and Lower Explosive Limit (LEL).  These compounds were assessed using direct-reading multi-gas monitors with a data logging function. The work was conducted while wearing supplied air respirators until sufficient ambient air and personal exposure monitoring data indicated that other respiratory protective equipment would be appropriate.

Once emission levels were determined, Landmark worked with the client to evaluate emission rates over time in order to support master leasing plans and lease parcel reviews for public land mineral lease agreements. Based on the findings of air monitoring and the confirmed effectiveness of the installed emission control systems, Landmark provided programmatic advice on environmental health and safety for future operations at the oil fields.

Project Highlights

  • Rapid mobilization of personnel, supplied air respiratory monitoring equipment, and air monitoring instruments to a remote site.
  • Rapid identification of worker exposure levels and development of an abatement strategy to support successful lease agreements with federal agencies.
  • Innovative design and on-site fabrication and installation of emission control and monitoring systems that functioned in highly corrosive environments while also allowing for reconfiguration or relocation as emission controls required.