Passive Soil Vapor Extraction - GSI Environmental Inc.

SRNL-STI-2009-00571Rev. 1Figure 5.1: Structure of the ITRC EA Decision Flowchart and How the PSVE Flowchart Dovetailsinto the Process5.1.2 Decision Process for Selection of PSVEThe ITRC document is a guide to building a strong technically defensible basis forselecting technologies that can accelerate the transition from an active technology toMNA, however, it does not provide any guidance on how to select appropriatetechnologies. The PSVE decision flowchart (Figure 5.2) was developed to providedecision-makers with a systematic approach to demonstrate the appropriateness ofselecting PSVE technologies for chlorinated solvent sites. It is intended to be used inconjunction with the EA flowchart and like the EA process, is intended to be an iterativeprocess that should be repeated during the remedy selection and performancemonitoring until MNA or site closure requirements have been achieved.34 Enhanced Attenuation TechnologiesPassive Soil Vapor Extraction