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Technical Resources


On this page:
Technical Review Workgroup Asbestos Committee
Sampling, Analysis, and Laboratories
Risk Assessment
Presentations and Training

Technical Assistance

Technical Review Workgroup for Metals and Asbestos (TRW)

The TRW is an interoffice workgroup convened by the U.S. EPA Office of Solid Waste and Emergency Response/Office of Superfund Remediation and Technology Innovation (OSWER/OSRTI). Its goal is to support and promote consistent application of the best science in the field of risk assessment for metals and asbestos at contaminated sites nationwide. The TRW is composed of several committees: Lead Committee, Asbestos Committee, and Bioavailability Committee.

Asbestos Committee Mission

The Asbestos Committee is available to provide technical support for questions concerning the assessment, removal or remediation of asbestos contamination at Superfund sites. Its goal is to support and promote consistent application of the best science in the field of risk assessment for asbestos at contaminated sites nationwide.

Accessing the TRW Asbestos Committee

Regional and state risk assessors and project managers may submit written or electronic requests for TRW Asbestos Committee review to the TRW Asbestos Committee co-chairs:

Sampling, Analysis, and Laboratories

You will need Adobe Reader to view some of the files on this page. See EPA's PDF page to learn more.

This section provides information on sampling and analytical methodology and links to accredited laboratories for sample analysis.

Sampling

Activity Based Sampling Demonstration - Raking(video) A link to a visual demonstration of an activity-based sampling (ABS) scenario to test for asbestos in the soil.

Activity-based Sampling for Asbestos (June 2006 Presentation at NARPM) (PDF) (23pp, 988KB) A presentation prepared by Brian Brass of EPA's Environmental Response Team, Las Vegas, NV, that discusses ABS, its advantages, application, and several case studies.

Standard Operating Procedures for Activity-Based Sampling (PDF) (29pp, 45KB) OSWER's Emergency Response Team's Standard Operating Procedure #2084, Revision 0, May 10, 2007. Exit disclaimer

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Analysis

The TRW Asbestos Committee is interested in feedback from the user community regarding the data entry sheets listed below. Please send any comments to asbestoshelp@epa.gov. In addition, the information in NADES can be uploaded to Scribe. Instructions and additional information are available at http://www.epaosc.org/asbestosdatamgmt. Exit disclaimer

National Asbestos Data Entry Spreadsheet (NADES) for Bulk & Soil Analysis by PLM v8 (XLS, 320K)

National Asbestos Data Entry Spreadsheet (NADES) for Air & Dust Analysis by Superfund TEM v12i (XLS, 928K)

DRAFT National Asbestos Data Entry Spreadsheet (NADES) for PCM Analysis v3 (XLS, 172K)

Analytical Methodology: Methods, Data Capture, and QA/QC (June 2006 Presentation at NARPM) (PDF) (24pp, 717KB) Presentation that emphasizes confounding problems involved with asbestos analysis, the draft Superfund TEM method for analysis of air and dust samples, counting procedures, and other related topics.

Comparison of Applicable Methods for Measuring Asbestos in Air (PDF) (2pp, 35KB) Table 4.2 from Technical Support Document For A Protocol To Assess Asbestos-Related Risk (Final Draft). EPA # 9345.4-06 October 2003, which compares five analytical methods.

Summary Table of Methods for Analysis of Asbestos in Air or Dust. Compiled from published analytical methods. EPA 2005 (PDF) (1pg, 56KB) A comparison of eight PCM and TEM methods, presenting sensitivities, discrimination, and counting rules for asbestos in air or dust.

Summary Table of Methods for Analysis of Asbestos in Soil/Bulk Materials. Compiled from published analytical methods. EPA 2005 (PDF) (1pg, 56 KB) A comparison of nine PLM, TEM, and SEM methods, presenting sensitivities, discrimination, and counting rules for asbestos in soil and bulk materials.

CARB Method 435: Determination of Asbesto Content of Serpentine Aggregate (PDF)Exit disclaimer (19pp, 1.2MB) California Air Resources Board’s 1991 method for determining the asbestos content in serpentine, based on polarized light microscopy. Sampling techniques are provided. This method is applicable to determining asbestos content of serpentine aggregate in storage piles, on conveyor belts, and on surfaces such as roads, shoulders, and parking lots.

Ambient Air - Determination of Asbestos Fibres - Direct-transfer Transmission Electron Microscopy Method (PDF) Exit disclaimer (56pp, 2.1MB) A link to the International Standards Organization to purchase ISO 10312:1995.

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Laboratories

Links to the National Institute of Standards and Technology (NIST), National Voluntary Laboratory Accreditation Program (NVLAP), listed by state:

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Risk Assessment

Supplemental Guidance on Calculating Screening Levels for Asbestos in Air (PDF) (4pp, 38K) This document provides supplemental guidance for calculating risk based concentration values for asbestos in air that may be used as screening levels. As described in the Framework for Investigating Asbestos-Contaminated Superfund Sites (PDF), asbestos concentrations in soil may not be used to screen sites out (i.e., to support a no further action decision), although asbestos concentrations in soil may be used to support a response action.

Revised Draft Asbestos Example RAGS Tables (MS EXCEL) (XLS, 139KB) This spreadsheet contains EPA's revised draft asbestos tables of exposure pathways, range of risk-based screening levels from the Framework for Investigating Asbestos-Contaminated Superfund Sites (OSWER Directive #9200.0-68, September, 2008), exposure-point concentrations, values used for daily intake calculations based on a reasonable maximum exposure (RME), residential noncancer oral and dermal toxicity data, cancer toxicity data, calculation of residential chemical cancer risks and noncancer hazards based on RME, and a summary of RME receptor risks and hazards for residential exposures.

Asbestos RBC Calculator (MS Excel) (XLS, 139KB) This spreadsheet contains EPA's risk-based concentration calculator for asbestos. It includes tables for exposure scenario inputs, exposure scenario less-than-lifetime inhalation unit risk, and risk-based concentration for asbestos in air.

1992 Asbestos Catastrophic Situations Guidance (PDF) (59pp, 1.5MB) These guidelines are intended to assist regional, state, and local agencies manage asbestos hazards resulting from catastrophic accidents or disasters, such as earthquakes and hurricanes. The guidelines provide reference information and a review of the experiences of EPA and state enforcement agencies in dealing with asbestos during emergencies.

IRIS Assessment for Asbestos (cancer) This webpage contains EPA's Integrated Risk Information System cancer assessment for asbestos that was last revised on 07/01/1993.

IRIS - schedule for noncancer assessment This webpage allows users to track EPA's progress on the development of a noncancer asbestos assessment, which began on 02/22/2001.

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Presentations and Training

Analytical Methodology: Methods, Data Capture, and QA/QC (June 2006 Presenation at NARPM) (PDF) (24pp, 71KB) In her slides, Mary Goldade of EPA Region 8 emphasized confounding problems involved with asbestos analysis, the draft Superfund TEM method for analysis of air and dust samples, counting procedures, and other related topics.

Asbestos Site Assessment Framework" Self-guided Training (PDF) (88pp, 16MB) EPA's TRW Asbestos Committee produced these training slides as a broad overview of EPA's asbestos framework. The slides outline the framework and include asbestos definitions and morphology, asbestos sampling recommendations, examples of activity based sampling, asbestos laboratory analysis recommendations, and asbestos risk assessment recommendations.

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