Ecological Risk Assessment Summary Pantex Plant, Amarillo, Texas
Author:
Publisher:
Published: 2007
Total Pages:
ISBN-13:
DOWNLOAD EBOOKRead and Download eBook Full
Author:
Publisher:
Published: 2007
Total Pages:
ISBN-13:
DOWNLOAD EBOOKAuthor:
Publisher:
Published: 1996
Total Pages: 68
ISBN-13:
DOWNLOAD EBOOKAuthor:
Publisher:
Published: 1983
Total Pages: 344
ISBN-13:
DOWNLOAD EBOOKAuthor: F. James Dwyer
Publisher: ASTM International
Published: 1997
Total Pages: 562
ISBN-13: 0803124740
DOWNLOAD EBOOKAuthor: Glenn W. Suter II
Publisher: CRC Press
Published: 2016-04-19
Total Pages: 656
ISBN-13: 1420012568
DOWNLOAD EBOOKThe definitive reference in its field, Ecological Risk Assessment, Second Edition details the latest advances in science and practice. In the fourteen years since the publication of the best-selling first edition, ecological risk assessment (ERA) has moved from the margins into the spotlight. It is now commonly applied to the regulation of c
Author:
Publisher:
Published: 1991
Total Pages: 248
ISBN-13:
DOWNLOAD EBOOKAuthor: Bradley L. Heim
Publisher:
Published: 2016
Total Pages: 306
ISBN-13:
DOWNLOAD EBOOKEcological risk assessments (ERAs) for contaminated sites can be lengthy, resource-intensive, and prone to subjective interpretation. The Texas Commission on Environmental Quality (TCEQ) periodically publishes the RG-263 document which is known as the Ecological Risk Assessment Guidance or ERAG, but is entitled "Conducting Ecological Risk Assessments at Remediation Sites in Texas". The ERAG also discusses the interactions of the ERA process with the ecological services analysis process and the role that the Natural Resource Trustee agencies play in both under Texas regulation 30 TAC ยง7.124. The guidance outlines a three tiered process: Tier 1 Exclusion Tier II Screening Level ERA Tier III Baseline ERA The ecological protective concentration level (PCL) calculator and supporting database were intended to provide a consistent, scientifically derived and legally defensible methodology that will streamline the processes of development and review of ecological risk assessments. The result is a web-based user interactive toxicological database capable of calculating screening levels (Step 6 ERAG) and protective concentration levels (PCLs; Step 7 ERAG) for chemicals of concern (COCs) for over 80 indicator species in seven diverse habitats of Texas. The web-based tool is also capable of supporting the risk assessor in the development of a site-specific Tier III risk assessment. Input variables can be changed by the risk assessor automatically re-calculating the PCL. In addition, three test habitats have been developed that include species commonly used as ecological receptors by risk assessors in Texas. The calculator allows the selection of one or more individual species, including a growing list of threatened and endangered (T&E) species for risk calculations. For each COC, a fate and transport/toxicological profile was developed based on an exhaustive literature review which incorporated No Observed Adverse Effects Level (NOAEL)-Lowest Observed Adverse Effects Level (LOAEL)-based toxicity reference values (TRVs) for growth, reproduction and mortality. The TRVs, in conjunction with species uptake factors and a multimedia bioaccumulation/food web model, are used to calculate the PCL. When site-specific factors differ from default values this tool allows the user to use site-specific values to calculate refined PCLs provided the values can be supported.
Author: United States. Energy Research and Development Administration
Publisher:
Published: 1976
Total Pages: 236
ISBN-13:
DOWNLOAD EBOOKAuthor: U.S. Environmental Protection Agency. Office of Health and Environmental Assessment
Publisher:
Published: 1991
Total Pages: 200
ISBN-13:
DOWNLOAD EBOOK