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Interesting News and Events Related to the Risk Assessment Industry
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Hilights from EPA's TechDirect, April 1, 2003 |
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In Search of Representativeness: Evolving the Environmental Data Quality Model. This reprint, entitled "In Search of Representativeness: Evolving the Environmental Data Quality Model" was published in the November/December 2002 issue of the journal Quality Assurance: Good Practice, Regulation, and Law. This article asserts that data representativeness is fundamental to data quality, yet the data quality model for contaminant data remains focused on analytical methods to the neglect of strategies to accommodate environmental heterogeneity. Advancing technology enables the cost-effective, high density, adaptive sampling needed to assure data representativeness, supporting a next generation data quality model that explicitly manages sampling uncertainties (November 2002, 12 pages). View or download at http://clu-in.org/techpubs.htm .Guidance on the Use of Passive Diffusion Samplers to Detect Volatile Organic Compounds in Ground Water Discharge Areas, and Example Applications in New England (Water-Resources Investigations Report 02-4186). This document was published by the USGS, DOI, and EPA. It was prepared under the auspices of the U.S. EPA Office of Solid Waste and Emergency Response Monitoring and Measurement for the 21st Century Initiative. The document provides guidance on passive vapor diffusion (PVD) sampler assembly, deployment, and recovery to detect volatile organic compounds in ground-water discharge areas. The report also discusses the use of PVD samplers at nine Superfund sites in New England to identify likely discharge areas for VOCs in ground water (December 2002, 80 pages). View or download at http://water.usgs.gov/pubs/wri/wrir024186/pdf/wri024186.pdf .Calculation and Use of First-Order Rate Constants for Monitored Natural Attenuation Studies (EPA 600-S-02-500). This paper was published by the U.S. EPA National Risk Management Research Laboratory. It explains when and how to apply first-order attenuation rate constant calculations in monitored natural attenuation (MNA) studies. First-order attenuation rate constant calculations can be an important tool for evaluating natural attenuation processes at ground-water contamination sites. Specific applications identified in U.S. EPA guidelines (U.S. EPA, 1999) include use in characterization of plume trends (shrinking, expanding, or showing relatively little change), as well as estimation of the time required for achieving remediation goals (November 2002, 28 pages). View or download at http://www.epa.gov/ada/download/issue/540S02500.pdf. For hard copies, contact Kay Cooper at (580) 436-8651 or fax (580) 436-8503.Reminder! Using Science to Assess Environmental Vulnerabilities (ReVA-MAIA) Conference, May 13-15. This conference is sponsored by the U.S. EPA. Its purpose is to bring environmental decision makers and researchers together to illustrate practical uses of recently developed approaches, tools, and decision support systems that can be used to assess current and future environmental vulnerabilities. The conference will highlight research approaches and models developed by ORD's Regional Environmental Vulnerability Assessment (ReVA) program; however, all researchers interested in the assessment of environmental vulnerability and environmental forecasting are invited to participate. Agenda and registration information available at http://www.reva-maia.org . |
