API Publ 4731

The Light Non-aqueous Phase Liquid (LNAPL) Parameters Database is a collection of information about samples that have had their capillary parameters determined, as well as other physical parameters measured. Capillary properties are crtitcal in multiphase calculation, and those results have very high sensitivity to these properties. The primary purpose of this database is to provide information to users who are trying to characterize the movement and distribution of LNAPL within a site that has a limited set of direct observations of the capillary properties of the site. Other databases of related parameters have typically been derived from measurements in the agricultural of the petroleum extractions industries; neither being necessaruily representative of near-surface enviromental conditions. Tihs database give the user the opportunity to understand the range of capillary characteristics observced at sites that are geologically similar, but where there are more direct and laboratory observations available.