The 33rd quarterly update of literature contains new citations related to the needs areas. A list of these citations and accompanying abstracts is found under View New Entries. These citations are also part of the searchable master database.

The 32nd quarterly update of literature contains new citations related to the needs areas. A list of these citations and accompanying abstracts is found under View New Entries. These citations are also part of the searchable master database.

The 31st quarterly update of literature contains new citations related to the needs areas. A list of these citations and accompanying abstracts is found under View New Entries. These citations are also part of the searchable master database.

The 30th quarterly update of literature contains new citations related to the needs areas. A list of these citations and accompanying abstracts is found under View New Entries. These citations are also part of the searchable master database.

The 29th quarterly update of literature contains new citations related to the needs areas. A list of these citations and accompanying abstracts is found under View New Entries. These citations are also part of the searchable master database.

The 28th quarterly update of literature contains new citations related to the needs areas. A list of these citations and accompanying abstracts is found under View New Entries. These citations are also part of the searchable master database.

In cooperation with the EPA's 21M² Initiative, the USGS has completed a guide on the use of tree coring as a tool to examine subsurface VOCs. The guide examines some of the factors influencing the use of tree coring for that purpose and summarizes some case studies in which tree coring has been used to examine subsurface VOCs. Typical VOCs that have been detected in tree cores include benzene, toluene, ethylbenzene, xylene isomers, trimethyl benzene, MTBE, TCE, PCE, and cDCE. The method is inexpensive, portable, rapid, and uncomplicated.

The 27th quarterly update of literature contains new citations related to the needs areas. A list of these citations and accompanying abstracts is found under View New Entries. These citations are also part of the searchable master database.

This workshop has presentations on DIAL and SOF surveys done in the Houston, Texas area, monitoring for pipeline gas leaks with an aircraft mounted DIAL system, the results of an ongoing two-year continuous fenceline FTIR activity at a petrochemical plant, the use of VRPM to measure landfill fugitive gas emissions and mercury emissions from a chlor-alkali plant, a fully automated VRPM TDLAS system for continuous monitoring of lagoons at consolidated animal feeding operations, the use of FTIR fenceline monitoring MGP cleanups, and a research update on equipment being developed to detect in the mid to far IR spectrum that does not require cryogenic cooling. Also discussed were the implications for facility monitoring as these cutting edge tools become more common place and how to promote their use to reduce overall emissions. The workshop resulted in suggestions and recommendations for future actions to be taken by the various entities represented at the meeting.

The 26th quarterly update of literature contains new citations related to the needs areas. A list of these citations and accompanying abstracts is found under View New Entries. These citations are also part of the searchable master database.

The 25th quarterly update of literature contains new citations related to the needs areas. A list of these citations and accompanying abstracts is found under View New Entries. These citations are also part of the searchable master database.

With support from the 21M² Initiative, the Office of Research and Development has developed and evaluated a method for characterizing fugitive emissions from large area sources. The method, known as radial plume mapping (RPM), uses multiple-beam, scanning, optical remote sensing (ORS) instrumentation such as open-path Fourier transform infrared spectroscopy, ultraviolet differential absorption spectroscopy, open-path tunable diode spectroscopy, and open-path tunable diode laser absorption spectroscopy in unique radial configurations and optimization algorithms providing essential spatial data for emission calculations.

The 24th quarterly update of literature contains new citations related to the needs areas. A list of these citations and accompanying abstracts is found under View New Entries. These citations are also part of the searchable master database.

The 23rd quarterly update of literature contains new citations related to the needs areas. A list of these citations and accompanying abstracts is found under View New Entries. These citations are also part of the searchable master database.

The 22nd quarterly update of literature contains new citations related to the needs areas. A list of these citations and accompanying abstracts is found under View New Entries. These citations are also part of the searchable master database.

This area is designed to highlight some of the tools developed by The Environmental Sciences and Applied Systems Branch of the Navy's Space and Naval Warfare Systems Center in San Diego that relate to 21M² topics and to showcase examples where the tools have been used.

The 21st quarterly update of literature contains new citations related to the needs areas. A list of these citations and accompanying abstracts is found under View New Entries. These citations are also part of the searchable master database.

The 20th quarterly update of literature contains new citations related to the needs areas. A list of these citations and accompanying abstracts is found under View New Entries. These citations are also part of the searchable master database.

The 19th quarterly update of literature contains new citations related to the needs areas. A list of these citations and accompanying abstracts is found under View New Entries. These citations are also part of the searchable master database.

The 18th quarterly update of literature contains new citations related to the needs areas. A list of these citations and accompanying abstracts is found under View New Entries. These citations are also part of the searchable master database.

The 17th quarterly update of literature contains new citations related to the needs areas. A list of these citations and accompanying abstracts is found under View New Entries. These citations are also part of the searchable master database.

This literature search was focused on measurement methods and characterization approaches for a group of “emerging” contaminants. By emerging it is meant that they have not, or have not until recently, been seen as chemicals of concern for the Agency remedial action programs. For many of them, analysis by standard Contract Laboratory Program or SW 846 methods is unlikely to detect them or to detect them at levels of concern.

In cooperation with the EPA's 21M² Initiative, the USGS has completed a study on the use of nylon-screen diffusion and pushpoint samplers for obtaining samples for metals analysis in sediment pore water. The study concluded that both samplers were effective in collecting pore water samples and yielded similar results. The study also indicated wide variability in metals concentrations over short distances within the sediments.

With support from the 21M² Initiative, the Office of Research and Development used scanning open path Fourier transform infrared, tunable diode laser absorption, and ultra-violet differential optical absorption spectroscopy to determine if hazardous gases were passing through the cover of a closed landfill. The investigation, which was a first step in evaluating redevelopment options, did not find significant gas movement through the cover, but did detect a gasoline hotspot by a nearby building.

With support from the 21M² Initiative, the Office of Research and Development used scanning open path Fourier transform infrared, tunable diode laser absorption, and ultra-violet differential optical absorption spectroscopy to determine if hazardous gases were passing through the cover of a closed landfill. The investigation, which was a first step in evaluating redevelopment options, found two methane hotspots that were major contributors to a 4.9 g/s methane flux emanating from the site.

With support from the 21M² initiative, the Office of Solid Waste has developed a new technique for speciating mercury. Method 3200 contains a sequential extraction and separation procedure that may be used in conjunction with a determinative method to differentiate mercury species that are present in soils and sediments. It also provides information on both total mercury and various mercury species.

In cooperation with the EPA's 21M² Initiative, the USGS has completed a study on the use of a pushpoint sampler for studying the interaction of a ground-water contaminated plume with sediment. The study concluded that the simplicity of collecting numerous samples in a short time period (routinely, 20 to 30 per day) validates the use of a pushpoint sampler as a highly effective tool for mapping the extent of contaminated subsurface plumes and determining their constituents and loadings.

The 16th quarterly update of literature contains new citations related to the needs areas. A list of these citations and accompanying abstracts is found under View New Entries. These citations are also part of the searchable master database.

Contains citations and project information on SBIR, STTR, and Grant awards related to the 21M² needs areas. The project awards were made primarily in 2004 and 2005 by DoD, DOE, EPA, and NSF.

The 15th quarterly update of literature contains new citations related to the needs areas. A list of these citations and accompanying abstracts is found under View New Entries. These citations are also part of the searchable master database.

This focused literature search considered published innovative research and development activities related to nanotubes, nanopores, nanoclusters and other foundations for nanosensors. A list of citations and accompanying abstracts is available.

This focused literature search considered published innovative research and development activities for geophysical methods for locating and/or monitoring DNAPLs. A list of citations and accompanying abstracts is available.

The 14th quarterly update of literature contains new citations related to the needs areas. A list of these citations and accompanying abstracts is found under more information. These citations are also part of the searchable master database.

The 13th quarterly update of literature contains new citations related to the needs areas. A list of these citations and accompanying abstracts is found under more information. These citations are also part of the searchable master database.

TIP is funding projects to support the needs area for remote sensing of air-born contaminants. As part of this effort a resource center for this topic has been set up. This resource center will provide descriptions and examples of uses of open path technologies. This month's open path technology focus is tunable diode lasers (TDLs). Open path TDLs are used in atmospheric pollutant studies, fenceline monitoring, process line/tank leak detection, industrial gas-purity applications, and monitoring and control of combustion processes.

This report discusses a new measurement technology for characterizing emissions from large area sources. The site selected for demonstrating this technology is a superfund landfill that is being evaluated for recreational use. Data on methane and air toxics were needed to help determine any increased risk to those using the site. Open-path Fourier transform infrared (OPFTIR) spectrometers were used to provide data on both background and surface emissions. These data will be used to make decisions about potential recreational use of this site.

This report is a survey of the equipment that can be used to collect sediment and pore water samples. The report is not meant to be a "how to" on sampler use or sediment site characterization planning, but rather a basic reference for screening methods for further investigation.

The 12th quarterly update of literature contains new citations related to the ten needs areas. A list of these citations and accompanying abstracts is found under more information. These citations are also part of the searchable master database.

This report summarizes the status of emerging sensor technologies for facilitating long-term ground water monitoring for a class of contaminants called volatile organic compounds (VOCs). It also describes a number of factors, including regulatory acceptance and cost-effectiveness, that influence the applicability of these technologies. The focus is on long-term ground water monitoring that is generally associated with a selected remedy, such as monitored natural attenuation or pump and treat.

TIP is funding projects to support the needs area for remote sensing of air-born contaminants. As part of this effort a resource center for this topic has been set up. This resource center will provide descriptions and examples of uses of open path technologies. This month's open path technology focus is Raman Spectroscopy. Like FT-IR, open path Raman spectroscopy can be used to identify and quantitate multiple chemicals, but unlike FT-IR it does not have problems with moisture interferences.

The eleventh quarterly update of literature contains new citations related to the ten needs areas. A list of these citations and accompanying abstracts is found under more information. These citations are also part of the searchable master database.

The tenth quarterly update of literature contains new citations related to the ten needs areas. A list of these citations and accompanying abstracts is found under more information. These citations are also part of the searchable master database.

The ninth quarterly update of literature contains new citations related to the ten needs areas. A list of these citations and accompanying abstracts is found under more information. These citations are also part of the searchable master database.

The eighth quarterly update of literature contains new citations related to the ten needs areas. A list of these citations and accompanying abstracts is found under more information. These citations are also part of the searchable master database.

TIO is funding projects to support the needs area for remote sensing of air-born contaminants. As part of this effort a resource center for this topic has been set up. This resource center will provide descriptions and examples of uses of open path technologies. This month's open path technology focus is light detection and ranging (LIDAR) instrumentation. While LIDAR has a number of uses, for environmental purposes it can detect and measure the concentration of specific chemicals in the air at prespecified ranges. This allows for the development of chemical concentration gradient maps across a fence line or over a tank farm.

The seventh quarterly update of literature related to the ten needs areas contains over 300 new citations. A list of these citations and accompanying abstracts is found under more information. These citations are also part of the searchable master database.

TIO has funded a project to support the needs area for remote sensing of air-born contaminants. An open path Fourier transform infrared (OP-FTIR) project will use a radial scanning technique to locate potential hotspot areas and, if warranted by the horizontal survey, a flux measurement using vertical gradient and/or plume interception techniques.

Under 21M², TIO helped fund a project to develop a procedure for analyzing perchlorate in the field. The project, which was implemented by Region 9, has resulted in a field method to measure perchlorate concentration in ground water. The method, which uses an ion selective electrode, has a method reporting limit of 15 µg/L and a detection limit of 3 µg/L. The California advisory level for perchlorates is 18 µg/L. The method is subject to some interference from bromide, chloride, and nitrate.

The sixth quarterly update of literature related to the ten needs areas contains over 200 new citations. A list of these citations and accompanying abstracts is found under more information. These citations are also part of the searchable master database.

TIO has funded a project to support the needs area for remote sensing of air-born contaminants. A UV-DOAS project, which was carried out in the Chicago area, tested the ability of the instrument to monitor fence-line concentrations of aromatic compounds during a remedial action at a landfill. The UV-DOAS data, which are averaged measurements across a 200-meter distance, were compared to data taken at points along the same path using canisters for collection and GC/MS for analysis. The results of this project will be available soon.

This literature search identified recent innovations and deployments of Fourier Transform-Infrared Spectrometry (FT-IR), Ultraviolet-Differential Optical Absorption Spectrometry (UV-DOAS), and LIDAR for measurement of pollutants at industrial and commercial facilities, remedial sites, and general air quality.

A summary table (matrix) by Agency of SBIRs awarded in the ten needs areas is now available.

The fifth quarterly update of literature related to the ten needs areas contains many new citations. A list of these citations and accompanying abstracts is found under more information. These citations are also part of the searchable master database.

The PneuLog™ tool has been tested under 21M² program at Picillo farms site in NH, and also evaluated at the El Toro Marine Corps Air Station in CA.

The U.S. EPA Technology Innovation Office, in collaboration with the U.S. Army Corps of Engineers has developed a new online encyclopedia of field analytic technologies. This encyclopedia is intended to provide information about technologies that can be used in the field to characterize contaminated soil and ground water, monitor the progress of remedial efforts, and in some cases, and for confirmation sampling and analysis for site close out. We have recently added a section on ground penetrating radar to accompany the current ten analytical technologies.

The fourth quarterly update of literature related to the ten needs areas contains 99 new citations. A list of these citations and accompanying abstracts is found under more information. These citations are also part of the searchable master database.

The DOE Subsurface Contaminant Focus Area program will be sponsoring a Long Term Monitoring (LTM) Sensor/Analytical Methods Workshop on June 13-15 in Orlando immediately following the 2001 International Containment & Remediation Technology Conference. The objective of the workshop is to evaluate the currently available or newly emerging sensors and analytical instruments used for LTM of contaminants in the subsurface.

This literature search considered published innovative research and development activities for detecting and tracking leaks in the vadose zone.

The Fully Integrated Environmental Location Decision Support (FIELDS) with Spatial Analysis and Decision Assistance (SADA) conference will be held in Denver, CO on March 6-8, 2001. This conference offers hands-on instruction in the use of FIELDS and SADA software with STORET, EQuIS, and Query Manager Databases by the software staff.

This literature search considered published innovative research and development activities for perchlorate analysis over the past 4 years.

EPA has teamed with the Air Force Center for Environmental Excellence to test the Burge automated ground-water monitoring system. The system is specific for trichloroethene.

These projects include: Isomer Specific Immunoassay for PCBs; Immunoassay for Lead; Field Method for Detecting Perchlorate; Feasibility of Using Diffusion Samplers for Sediments; Continued Sponsorship of WPI's Sensor Website; Development of On-line Training Manual for FIELDS Software.