The NAVFAC’s ‘New Developments in LNAPL Site Management’ summarizes new developments in the area of natural source zone depletion (NSZD) and reviews key tools for evaluating the practicability of Total Petroleum Hydrocarbons (TPH) and LNAPL recovery.
E-Flux’s technology was recognized in the 2017 API Document for Quantification of Vapor Phase-Related Natural Source Zone Depletion Processes. This important guide is focused on the quantification of NSZD through the measurement of CO₂ efflux, and acknowledges the important role of carbon isotope analysis in this NSZD quantification. “The use of ¹⁴C is arguably the best, most quantitative means for background correction and it should be considered of utmost reliability.” Click here to see API’s LNAPL FAQs
The 2018 LNAPL Updated 2018 document builds on the 2009 ITRC LNAPL documents ("Evaluating LNAPL Remedial Technologies for Achieving Project Goals" and "Evaluating Natural Source Zode Depletion at Sites with LNAPL") towards building a more robust LNAPL conceptual site model. Important updates include natural source zone depletion (NSZD) rate measurement techniques, LNAPL transmissivity, remediation technologies, sheens, and others.
CRC Care Tecnical Report
CRC CARE, an Australian independent organization for technology transfer in issues related to soil, water and air contamination, has released a guidance document on LNAPL natural source zone depletion (NSZD) measurement methods. This is a state of the practice document geared towards implementation of techniques and development of site-specific plans.