epa s guidelines for ecological risk assessment
Ecological Risk Assessment for Contaminated Sites - Chapter 2 docx
... Criteria for Selection of Assessment Endpoints for Ecological Risk Assessments Policy goals and societal values — Because the risks to the assessment endpoint are the basis for decision making, the choice ... may be used as assessment units In some cases, waste sites may constitute distinct habitats which can serve as assessment units For example, a grassy and rarely mowed waste burial ground surrounded ... plan for performing the assessment Risk assessors must be aware that not all representatives of agencies with risk management responsibilities are risk managers For example, in the United States...
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Ecological Risk Assessment for Contaminated Sites - Chapter 3 potx
... definitive risk assessments of aquatic biota for two reasons First, the form in the exposure assessment should match the form in the effects assessment Exposure–response models for aquatic biota are usually ... analysis of exposure is discussed 3.1 COMPONENTS OF ANALYSIS OF EXPOSURE This section discusses in general terms the activities that comprise the analysis of exposure Specific issues in sampling, ... conservative in most cases because they include complexed metals as well as dissolved metals Total concentrations are useful for screening assessments, but the dissolved form is appropriate for...
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Ecological Risk Assessment for Contaminated Sites - Chapter 4 potx
... Tests in both soil and soil solution may be useful for assessing risks from soil contaminants The relevance of published tests in soil to the assessment of risks to soil organisms seems self-evident, ... definitive assessments In definitive assessments, soil type and chemical speciation should be factors in decisions about the acceptability of data Tests should be chosen for risk assessments based on ... that should be understood by ecological risk assessors Assessors must be aware of these biases when these data are used to derive toxicity benchmarks or exposure–response models for chemicals Potential...
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Ecological Risk Assessment for Contaminated Sites - Chapter 6 ppt
... screening assessments for earlier phases in the remedial process such as the RI work plan, but the process should be repeated for each new assessment Methods for screening assessments are presented ... indicates the risk of the mixture to an assessment endpoint The HI for definitive assessments differs from the HI for screening assessments (Section 5.1.5) in that realistic exposure and effects values ... Exposure to Toxicity Comparisons of exposure estimates may be performed in several ways For screening assessments and even most definitive assessments, HQs are calculated, where HQ = (total dose...
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Ecological Risk Assessment for Contaminated Sites - Chapter 7 doc
... Superfund remedial feasibility studies Although the EPA definition of stressor in its Guidelines for Ecological Risk Assessment is broad and includes physical stressors, risks associated with CERCLA ... form Suter (1999a) also recommends that risk assessors create modular component models that can be reused in different combinations for different assessments 9.1.2.3 Assessment Endpoints As stated ... conditions (e.g., background soils) that are used in the baseline risk assessment (Section 2.7.3) 9.1.3 EXPOSURE ASSESSMENT The feasibility study should include an estimate of exposure of all assessment...
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Ecological Risk Assessment for Contaminated Sites - Chapter 8 doc
... effects of contamination 8.1.5 LAND USE Land-use scenarios play a different role in ecological risk assessments than they in human health risk assessments For human health risk assessments, remediation ... of exposure (Bowers et al., 1996) Although this criticism of risk assessment by Bowers and colleagues is based on human health risk, the same statistical argument applies to wildlife assessment ... different from the assumptions used in the derivation of PRGs, risk assessment is recommended More specifically, risk assessment is recommended: (a) if critical habitats are on or near the site; (b) if...
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Ecological Risk Assessment for Contaminated Sites - Chapter 10 pot
... manages the assessment © 2000 by CRC Press LLC 10.2.2 ASSESSMENT PLAN PHASE The assessment plan for an NRDA is equivalent to the analysis plan for a remedial investigation The discussion of analysis ... endpoint entities and processes as has NRDA However, as cost–benefit analysis becomes an increasingly important adjunct to risk assessment, NRDA and ecological risk assessment practices may converge ... pay for preservation of a resource, and results are sensitive to the context and wording of the questions 10.2.4 POST -ASSESSMENT PHASE The post -assessment phase consists of documenting the results...
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Ecological Risk Assessment for Contaminated Sites - Appendix (end) pdf
... or in its floodplain risk assessor: An individual engaged in the performance of the technical components of risk assessments Risk assessors may have expertise in the analysis of risk or specific ... ecological risk assessment Risk Anal 14:477–481 Burmaster, D E and D A Hull 1997 Using lognormal distributions and lognormal probability plots in probabilistic risk assessments Hum Ecol Risk Assess 3:235–255 ... fish are collected for analysis as part of a combined human and ecological risk assessment, fillet (muscle) tissues are frequently the only tissues analyzed This is because these tissues represent...
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Application of house’s model for translation quality assessment in assessing the english version of the vietnam’s law on investment no. 59/2005/qh11
... different views on equivalence will be discussed but there shall be no separate discussion of translation assessment; instead, it is implied that assessment of a translation is based on the respective ... for assessment is necessary Among the various criteria and models for translation quality assessment, House s model is chosen in this study because it is deemed to have a comprehensive set of ... translation will also be presented Chapter – Application of House s model for translation quality assessment In this chapter, House s model for translation quality assessment will first be presented...
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Vermont Health Education Guidelines for Curriculum and Assessment pptx
... Areas Skills-based Health Education Instruction Health Education Skills PHW IC/RS AI DM IC PS&CR GS CECH Respect VIP DM ML AV Curriculum and Assessment Guidelines 27 Assessment Emphasis Areas Self ... and social health These services include education, individual and group assessments, interventions, and referrals Professionals such as certified school counselors, student assistance professionals, ... two sets of standards and, thus, the assessment of those standards The knowledge and skills addressed in both sets of standards are essentially the same However, the order in which the standards...
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Báo cáo nghiên cứu nông nghiệp " An Integrated Approach to Strengthening Institutional Infrastructure for Environmental Risk Assessment, Monitoring & Remedial Action for Pesticide Residues " pptx
... 2002 ELISA technology, risk & site selection (2) UAF July 2002 GC/HPLC validation and risk assessment (3) HUS October 2003 Integrated system Task: Develop risk assessment protocols and risk management ... project specifications in both the number of personnel trained and the numbers of field sites and samples analysed Methods for risk assessment of different pesticides in use in Vietnamese agriculture ... project design was a good one and that it has been successfully implemented This approach using case studies for risk assessment involved a careful examination of resources available, supplementing...
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Báo cáo y học: "Guidelines for rating Global Assessment of Functioning (GAF)" pdf
... assessments used in psychiatry When assessment instruments are developed, study of the assessment process should be a standard procedure [9], but there has been little interest in guidelines for ... comprehensive set of heuristic guidelines that could support the assessor in executing the scoring process [85], but progress in the study of the assessment process is anticipated [9] Guidelines should ... impression [88], but difficulties with computerassisted assessment suggest a number of guidelines for users [41] The International Test Commission has developed guidelines on computer-based and...
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Regional Scale Ecological Risk Assessment - Chapter 2 potx
... these risk assessments deal with single chemicals in such classic cases as pesticides, herbicides, organic solvents, metals, polychlorinated biphenyls, and dioxins Most often the risk assessments ... REGIONAL RISK ASSESSMENT Codorus Creek, PA Site Location Risk Assessment Endpoints Size © 2005 by CRC Press LLC Cherry Point Pacific herring run for retrospective assessment; prospective assessment ... regional relative risk assessment FRAMEWORK OF THE RELATIVE RISK MODEL The framework for the RRM for regional risk assessment was outlined by Landis and Wiegers (1997) Ecological risk assessment (EcoRA)...
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Regional Scale Ecological Risk Assessment - Chapter 3 pdf
... THE MANAGEMENT DECISION /RISK ASSESSMENT LINK IN REGIONAL-SCALE ASSESSMENTS Risk assessors and managers involved in regional-scale assessments are realizing how important it is to include the link ... applied to ecological risk assessments of multiple stressors, Hum Ecol Risk Assess., 7, 231–237 Moraes, R., Landis, W.G., and Molander, S 2002 Regional risk assessment of a Brazilian rain forest, Human ... Further supporting this linkage, EPA subsequently published the Ecological Risk Assessment and Risk Management Principles for Superfund Sites (USEPA 1999) This directive establishes six principles for...
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Regional Scale Ecological Risk Assessment - Chapter 4 ppsx
... anadromous fishes from hatchery fishes) stressors For the objectives of this assessment, there were several distinct advantages to considering a regional as well as a site-specific scale The risk assessment ... for Environmental Assessment, Washington, D.C U .S Environmental Protection Agency 1998 Guidelines for Ecological Risk Assessment, EPA/ 630/R-95/002F, Risk Assessment Forum, Washington, D.C U .S ... anthropogenic sources of stressors This model considers not only the direct stressors and the organisms affected by these stressors, but also the sources producing these stressors and the habitats on...
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Regional Scale Ecological Risk Assessment - Chapter 5 doc
... REGIONAL SCALE ECOLOGICAL RISK ASSESSMENT EPA (United States Environmental Protection Agency) 1998b Guidelines for Ecological Risk Assessment Risk Assessment Forum, Washington, D.C EPA/ 630/R95/OOZF ... REGIONAL SCALE ECOLOGICAL RISK ASSESSMENT Table 5.1 Stakeholder Values and Assessment Endpoints Stakeholder Values Assessment Endpoint Citation Water Quality River water is usable as a source of ... Press LLC L1655_book.fm Page 98 Wednesday, September 22, 2004 10:18 AM 98 REGIONAL SCALE ECOLOGICAL RISK ASSESSMENT Table 5.2 Sources of Stressors and Examples of Stressors Released Source of Stressors...
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Regional Scale Ecological Risk Assessment - Chapter 6 potx
... 120 Wednesday, September 22, 2004 10:18 AM 120 REGIONAL SCALE ECOLOGICAL RISK ASSESSMENT INTRODUCTION The risk assessment for Codorus Creek was the second regional-scale risk assessment using the ... REGIONAL SCALE ECOLOGICAL RISK ASSESSMENT Table 6.2 The CCW EcoRA Risk Region and Sampling Site Descriptions Risk Region Area Description Landuse Fisheries Type Biological Sampling Sites with Distance ... Landis, W.G., Hum Ecol Risk Assess., 8, 405–428, 2002 With permission of Amherst Scientific Publishers.) Table 6.1 Risk Scoring for Endpoints and Risk Regions from the CCW EcoRA Risk Region Sampling...
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Regional Scale Ecological Risk Assessment - Chapter 7 docx
... AM 158 REGIONAL SCALE ECOLOGICAL RISK ASSESSMENT Moore, D.R.J 2001 The Anna Karenina principle applied to ecological risk assessments of multiple stressors, Hum Ecol Risk Assess., 7, 231–237 Obery, ... Confirmation of a Relative Risk Model Ecological Risk Assessment of Multiple Stressors Using Multivariate Statistics, Master s Thesis, Western Washington University, Bellingham USEPA (U .S Environmental ... section on regionalscale ecological assessment of cumulative risks in which several of the commentators remarked on the need for risk assessments to include predictive decision-making aspects...
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Regional Scale Ecological Risk Assessment - Chapter 8 docx
... ECOLOGICAL RISK ASSESSMENT 171 risk region, sum of potential stressor exposure within the risk region, total risk to assessment endpoints within the risk region, and total risk to each assessment ... is the conceptual model for this risk assessment Visually it describes all the interactions between stressors and habitats being considered in this risk assessment It has been produced as a spreadsheet ... calculations This is described in the Risk Analysis section RISK ANALYSIS USING THE RELATIVE RISK MODEL Much of the input data for the risk analysis in this assessment came from landuse patterns shown...
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Regional Scale Ecological Risk Assessment - Chapter 9 pot
... the risk estimations not have a specific unit and should be used only for comparisons among identified stressors, subareas, or sources in this case Relative Risk per Source The stressor sources of ... Assessment endpoint Figure 9.4 Self-sustaining aquatic fauna A simplified conceptual model relating sources of stressors to assessment endpoints ANALYSIS PHASE The analysis was based on the density ... REGIONAL SCALE ECOLOGICAL RISK ASSESSMENT Environmentally protected reserves, quilombo territories and limits of the 14 subareas in the risk assessment The same type of stressor can be released from...
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