The LNAPLs (Light Non-Aqueous Phase Liquids) documents help users identify appropriate LNAPL remedial goals through the development of a site-specific LNAPL conceptual site model (LCSM), provides tools to select LNAPL remedial technologies that will best achieve the LNAPL remedial goals, and provides a framework to evaluate the implemented technologies progress toward a technology specific endpoint.
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LNAPL-3 builds upon and supersedes both previous ITRC LNAPL guidance documents in an updated, web-based format. LNAPL-1 and LNAPL-2 are still available for review; however, LNAPL-3 is inclusive of those materials with new topics presented and previous topics elaborated upon and further clarified.
This guidance can be used for any LNAPL site regardless of size and site use and provides a systematic framework to:
develop a comprehensive LNAPL Conceptual Site Model (LCSM) for the purpose of identifying specific LNAPL concerns;
establish appropriate LNAPL remedial goals and specific, measurable, attainable, relevant, and timely (SMART) objectives for identified LNAPL concerns that may warrent remedial considerations;
select remedial technologies that will best achieve the LNAPL remedial goals for a site, in the context of the identified LNAPL concerns and conditions; and
evaluate the implemented remedial technologies to measure progress toward an identified technology specified endpoint
Also provide a technical overview of NSZD for LNAPL and the methods by which rates can be estimated and measured. For this document, the original ITRC NSZD document (LNAPL-1) was updated and incorporated into the main body and appendix.