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API-sponsored research yields practical tools and basic science for risk-based, cost-effective decision making.
API Soil and Groundwater Research Bulletins summarize research results from projects overseen by API's Soil and Groundwater Technical Task Force. The Task Force disseminates information and research results through publications, presentations and interaction with industry clients and regulatory agencies.
All bulletins listed below are in PDF format. We suggest using Acrobat Reader Version 5.0 or higher for viewing and printing. If you do not have Acrobat Reader, click the button below to download the software for free.
Bulletin 24:
Downward Solute Plume Migration: Assessment Significance and Implications for Characterization and Monitoring of "Diving Plumes"
DownloadFile Size: 2.6 MB
Version Date: April 2006
OS: PC/Mac | License: Free
Poster:
DownloadFile Size: 5.5 MB
Version Date: April 2006
OS: PC/Mac | License: Free
Bulletin 23:
The Impact of Gasohol and Fuel-Grade Ethanol on BTX and Other Hydrocarbons in Ground Water: Effect on Concentrations Near a Source
Download File Size: 768 KB
Version Date: December 2005
OS: PC/Mac | License: Free
Bulletin 22:
Maximum Potential Impacts of Tertiary Butyl Alcohol (TBA) on Groundwater from Small-Volume Releases of Ethanol-Blended Gasoline in the Vadose Zone
DownloadFile Size: 325 KB
Version Date: January 2005
OS: PC/Mac | License: Free
Bullet 21:
Evaluation of Potential Vapor Transport to Indoor Air Associated with Small-Volume Releases of Oxygenated Gasoline in the Vadose Zone
Download File Size: 308 KB
Version Date: January 2005
OS: PC/Mac | License: Free
Bulletin 20:
Answers to Frequently Asked Questions About Ethanol Impacts to Groundwater
DownloadFile Size: 260 KB
Version Date: December 2003
OS: PC/Mac | License: Free
Bulletin 19:
Evaluation of Small-Volume Releases of Ethanol-Blended Gasoline at UST Sites
DownloadFile Size: 180 KB
Version Date: October 2003
OS: PC/Mac | License: Free
Bulletin 18:
Answers to Frequently Asked Questions About Managing Risk at LNAPL Sites
High Resolution Version:
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File Size: 5.2 MB
Version Date: May 2003
OS: PC/Mac | License: Free
Low Resolution Version:
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File Size: 316 KB
Version Date: May 2003
OS: PC/Mac | License: Free
Bulletin 17:
Identification of Critical Parameters for the Johnson and Ettinger (1991) Vapor Intrusion Model
DownloadFile Size: 1.0 MB
Version Date: May 2002
OS: PC/Mac | License: Free
Bulletin 16:
Migration of Soil Gas Vapors to Indoor Air: Determining Vapor Attenuation Factors Using a Screening-Level Model and Field Data from the CDOT-MTL
DownloadFile Size: 1.0 MB
Version Date: May 2002
OS: PC/Mac | License: Free
Bulletin 15:
Vadose Zone Natural Attenuation of Hydrocarbon Vapors: An Empirical Assessment Of Soil Gas Vertical Profile Data
DownloadFile Size: 448 KB
Version Date: December 2001
OS: PC/Mac | License: Free
Bulletin 14:
Predicting the Effect of Hydrocarbon and Hydrocarbon-Impacted Soil on Groundwater
DownloadFile Size: 248 KB
Version Date: September 2001
OS: PC/Mac | License: Free
Bulletin 13:
Dissolution of MTBE from a Residually Trapped Gasoline Source
Download File Size: 248 KB
Version Date: September 2000
OS: PC/Mac | License: Free
Bulletin 12:
No-Purge Sampling: An Approach for Long-Term Monitoring
Download File Size: 680 KB
Version Date: October 2000
OS: PC/Mac | License: Free
Bulletin 11:
Strategies for Characterizing Subsurface Releases of Gasoline Containing MTBE
DownloadFile Size: 252 KB
Version Date: August 2000
OS: PC/Mac | License: Free
Bulletin 10:
Simulation of Transport of Methyl Tert-Butyl Ether (MTBE) to Groundwater from Small-Volume Releases of Gasoline in the Vadose Zone
Download File Size: 192 KB
Version Date: June 2000
OS: PC/Mac | License: Free
Bulletin 9:
Non-Aqueous Phase Liquid (NAPL) Mobility Limits in Soil
DownloadFile Size: 492 KB
Version Date: June 2000
OS: PC/Mac | License: Free
Bulletin 8:
Characteristics of Dissolved Petroleum Hydrocarbon Plumes Results From Four Studies
DownloadFile Size: 216 KB
Version Date: December 1998
OS: PC/Mac | License: Free
Bulletin 7:
DAFfy Graphs: An Innovative Approach for Modeling the Soil to Groundwater Pathway
DownloadFile Size: 136 KB
Version Date: August 1998
OS: PC/Mac | License: Free
Bulletin 5:
Evaluation of Sampling and Analytical Methods for Measuring Indicators of Intrinsic Bioremediation
DownloadFile Size: 300 KB
Version Date: February 1998
OS: PC/Mac | License: Free
Bulletin 4:
Selective Subcritical Water Extraction of Aromatic and Aliphatic Organic Pollutants from Petroleum Industry Soils and Sludges
Download File Size: 132 KB
Version Date: July 1998
OS: PC/Mac | License: Free
Bulletin 3:
Ten Frequently Asked Questions About MTBE in Water
Download File Size: 40 KB
Version Date: March 1998
OS: PC/Mac | License: Free
Bulletin 2:
Estimation of Infiltration and Recharge for Environmental Site Assessment
DownloadFile Size: 116 KB
Version Date: March 1997
OS: PC/Mac | License: Free
Bulletin 1:
Summary of Processes, Human Exposures and Remediation Technologies Applicable to Low Permeability Soils
DownloadFile Size: 80 KB
Version Date: September 1996
OS: PC/Mac | License: Free