1.1 This guide applies to sediment sites containing or suspected of containing non-aqueous phase liquids (NAPLs). This guide describes multiple emplacement mechanisms that can result in NAPL presence within the sediment stratigraphic profile and how the characteristics of the sediment, aquatic environment, and NAPL properties influence NAPL mobility within sediments. This guide provides example conceptual site model (CSM) scenarios to establish a common framework used to assess conditions influencing NAPL mobility via advection at sediment sites. 1.2 This guide is designed for general application to a wide range of sediment sites where NAPL is present or suspected to be present. This guide supplements methodologies for characterization and remedial efforts performed under international, federal, state, and local environmental programs but does not replace regulatory agency requirements. The users of this guide should review existing information and data available for a sediment site to determine applicable regulatory agency requirements and the most appropriate entry point into and use of this guide. 1.3 ASTM International standard guides are not regulations; they are consensus standard guides that may be followed voluntarily to support applicable regulatory requirements. This guide may be used in conjunction with other ASTM International guides developed for assessing sediment sites. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. 1.5 Units--The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
KeywordsLNPAL; DNAPL; sediments
This guide will be used by all interested parties of environmental remediation and assessment projects involving NAPL in sediments. These include government agencies (both as responsible parties and as regulatory over-site), environmental consultants, site owners, and laboratory professionals. Standardized guidance and laboratory methods do not exist for assessment of NAPL mobility in the diverse range of sediments in the United States and abroad. There is a limited volume of published literature on the topic.
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top