Multi-Tenant Housing Complex Fugitive Methane Investigation

When fugitive methane gas was detected close to a multi-unit apartment complex, the owner needed environmental consulting services to investigate an orphan natural gas well adjacent to the building. The well was previously discovered and plugged during construction of the apartment complex 12 years prior. However, during a routine service line inspection, natural gas was detected in the area adjacent to the vault containing the natural gas well. The fugitive methane was due to multiple malfunctions, including a leaking water well. The owner evacuated the building as a precautionary measure.

They then contracted with RETTEW to evaluate site conditions and perform emergency repairs within 24 hours. These repairs included installing a sump pump and a blower unit to actively draw and vent methane from the vault. Subsequent investigations included aquifer characterizations, isotopic methane sampling, pilot testing, feasibility analysis, and design and construction of remedial options. RETTEW replaced the existing plugged water well and vault with a dual-phase methane recovery system and an active horizontal collector to protect the building by controlling the migration of the methane venting near the building. RETTEW’s efforts, in conjunction with numerous safeguards put in place by the owner, should allow for safe reoccupancy of the building.

RETTEW NEWSROOM

Check out our latest updates on industry trends, corporate news, employee accomplishments, and community support.

Go to Newsroom

Uncategorized

Aspire! Intern Blog: Noah Hakes, Safety Consulting

During my time here at RETTEW, I have developed a lot of useful skills. These skills include things…

Read More

Uncategorized

Sign Up for an OSHA General Industry Training TODAY!

Take your safety capabilities to the next level with this General Industry Training in Mechanicsburg, PA, September 16-19….

Read More