Now available for download: API LNAPL Transmissivity Workbook: Calculation of LNAPL Transmissivity from Baildown Test Data.
Three new NAPL papers published:
Use of Single-Well Tracer Dilution Tests to Evaluate LNAPL Flux at Seven Field Sites
Nicholas Mahler, Tom Sale, Tim Smith and Mark Lyverse
Article first published online: 28 DEC 2011
Measurement of LNAPL Flux Using Single-Well Intermittent Mixing Tracer Dilution Tests
Tim Smith, Tom Sale, Mark Lyverse
Article first published online: 10 APR 2012
A Mass Balance Approach to Resolving LNAPL Stability
Nicholas Mahler, Tom Sale, Mark Lyverse
Article first published online: 22 MAY 2012
2-DAY CLASSROOM TRAINING: Light Nonaqueous-Phase Liquids: Science, Management, and Technology
ITRC plans to offer 3 classes of the 2-day LNAPL classroom training in 2013:
API LNAPL Resources
The LNAPL Resource Center contains manuals, software and other technical material to help you address cleanup of free-phase petroleum hydrocarbons in the shallow subsurface.
This easy-to-read brochure offers answers to practical and technical questions about cost-effective management, cleanup or closure of sites with groundwater impacted by light non-aqueous phase liquids (LNAPL), such as petroleum hydrocarbons. Click here to view the questions. Click below to download the brochure.
File Size: 316 KB
File Size: 5.2 MB
The 6 files available for download include the updated API LNAPL transmissivity workbook, a user guide, and three example workbooks (Ex1, Ex2 and Ex3). There is also a metric version of the workbook. This is a prepublication version, and minor edits may occur prior to final publication. View More
API Publication 4760
May 28, 2008
API LDRM Version 1.2 addresses a units conversion error in Version 1.1 for the metric units output for skimmer well recovery rates.
The API LNAPL Distribution and Recovery Model (LDRM) simulates the performance of proven hydraulic technologies for recovering free-product petroleum liquid releases to groundwater. Model scenarios included in the LDRM are hydrocarbon liquid recovery using: single- and dual-pump well systems, skimmer wells, vacuum-enhanced well systems, and trenches. The LDRM provides information about LNAPL distribution in porous media and allows the user to estimate LNAPL recovery rates, volumes and times. View More
API Publication 4715
This study provides quantitative theory and tools to evaluate LNAPL sources, their chemistry, and the effects various remediation strategies may have on groundwater and vapor exposure pathways. View More
The Guide is designed to provide an overall approach for evaluating LNAPL at a site to assess its potential risk, quantitatively defining mobility and recoverability, developing remedial strategies, and examining methods to enhance site closure. View More
API Publication 4711
Important fluid and soil property parameters are explained. Methods to measure each parameter are presented in order of relevance for use in environmental free-product mobility/recovery assessments. View More
This database is a collection of information about samples that have had their capillary parameters determined, as well as other physical parameters measured. Its purpose is to help users who are trying to characterize the movement and distribution of LNAPL within a site that has a limited set of direct observations. View More