Which of the following is a Stage I vapor recovery requirement for a facility with a monthly throughput of less than 10,000 gallons?

• A. All of these examples
• B. Install a Stage II vapor recovery system
• C. Have a spill bucket inspection monthly
• D. Monitor soil vapor using sensors

Answer: (A)

Stage I vapor recovery aims to minimize vapors released during storage and handling of gasoline, and even smaller facilities have basic controls to keep emissions in check.

Monthly spill bucket inspections are required because these containment devices catch spills at the fill point and help prevent liquid spills from generating vapors or seeping into the ground. Regular checks ensure the buckets are in good condition, properly sealed, and capable of containing any overflow or leaks.

Monitoring soil vapor with sensors targets potential subsurface releases. If vapors are migrating through soil or leaking from underground piping or storage tanks, soil vapor sensors can detect it early, showing that the vapor recovery system is effectively containing emissions or highlighting leaks that need repair.

Installing a Stage II vapor recovery system, although typically associated with vehicle refueling, is included here as part of the overall vapor control approach in some regulatory frameworks for facilities with small throughput. It represents another layer of vapor capture aimed at preventing emissions during fueling operations, which ties into the broader goal of reducing vapor releases at the site.

Together, these items reflect the kinds of controls and monitoring a Stage I program for a low-throughput facility may require, which is why all of these examples are considered part of the Stage I requirements in this context.