EPA Method 2D Overview | Gas Volume Flow Rate in Small Pipes & Ducts

A comprehensive overview of USA EPA Method 2D, the standard reference protocol for determining gas volume flow rates in small pipes and ducts using direct measurement meters. EPA Method 2D is commonly applied in environmental remediation projects, such as Soil Vapor Extraction (SVE) systems, and landfill gas tracking. Rather than calculating velocity with pitot tubes, this method utilizes inline volume meters to track direct flow. In this guide, we walk you through the applicability, field setup, and data standardization procedures. 📌 What You'll Learn: • When to use Method 2D vs. Method 2A or 2C • Acceptable types of direct measurement meters (rotameters, turbine, displacement) • Setting up monitoring ports for temperature and barometric pressure • Step-by-step leak-checking and meter calibration protocols • How to normalize metered volumes to standard atmospheric conditions If this video helped you understand inline gas flow testing for environmental compliance, please hit the like button, drop your field testing questions in the comments, and subscribe for more specialized source testing guides! #EPAMethod2D #SoilVaporExtraction #GasFlowRate #EnvironmentalRemediation #AirEmissions #VolumeMeter