Work Item
ASTM WK76688

New Guide for Estimating Natural Attenuation Rates for Light Non-Aqueous Phase Liquids in the subsurface

1. Scope

The promotion of knowledge, stimulation of research, and development of standard guides, specifications, practices, test methods, classifications, and definitions relating to environmental assessment, risk management and corrective action. The scope of the Committee includes, but is not limited to multi-media environmental assessment and risk management issues including environmental assessment, environmental management, corrective action due diligence, and sustainability.
These activities will be coordinated with and if available use the standards of other ASTM technical committees and organizations whose fields of endeavor are closely allied to or compliment environmental assessment and environmental management.


NSZD, NAPL, Source Zone, Natural attenuation:


A standardized approach for the estimation of the natural attenuation rates for LNAPL is needed for establishing a baseline metric for those involved in the remedial decision-making process. Despite the recent advances in published methods, there is a lack of systematic approach and refinement in data collection and interpretation for quantifying the spatially and temporally variable rates. Providing quality assurance in estimation of this metric will enable the assessment of active (more resource intensive) remediation systems as compared to passive remediation or monitoring of natural attenuation, as well as the remediation timeframe. This comparison, when performed through a standardized approach, informs the transition to more sustainable remedies through well-defined and transparent criteria.

The title and scope are in draft form and are under development within this ASTM Committee.


Developed by Subcommittee: E50.04

Committee: E50

Staff Manager: Molly Lynyak

Work Item Status

Date Initiated: 04-27-2021

Technical Contact: Parisa Jourabchi

Item: 001

Ballot: E50.04 (22-02)

Status: In Balloting