The Scope of this Standard Guide will focus on how to use gas flux chambers for measuring ebullition and contaminant flux rates. Included in the Guide will be detailed descriptions including the design and construction of the devices, the appropriate deployment and retrieval of the devices, and data interpretation. The standard is not intended to cover all possible types of flux chambers. The standard fill focus solely on flux chambers and will not cover other methods for estimating ebullition rates (i.e. flux tents).
Measuring gas ebullition rates from NAPL impacted sediments is critical for understanding short and long term fate and transport of contaminants and for determining appropriate remedial actions. Gas flux chambers can be an important tool for detecting and measuring ebullition rates when designed, deployed, and retrieved properly. Consensus based standards on these concepts do not currently exist and will be quite useful for creating consistency in projects.
The title and scope are in draft form and are under development within this