Guidance for Ecological Risk Assessments
Part A: OVERVIEW.PDF is an Adobe PDF file containing the document titled Guidance for Ecological Risk Assessments at Hazardous Waste Sites and Permitted Facilities, Part A: Overview, dated July 4, 1996. This document contains the description of the DTSC-recommended phased method for conducting an ecological risk assessment. Outlined are the contents of a Scoping Assessment, a Phase I Predictive Assessment, a Phase II Validation Study and a Phase III Impact Assessment. More detailed guidance for each of these components will be available in a series of additional documents. Also included are flow charts describing the process with a text description of the decision points and work products contained in the flow charts. A response to comments section contains written responses to more than 100 written comments received after public notice of this document.
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Guidance for Ecological Risk Assessments (EcoNOTEs)
HERD EcoNOTES outline specific issues which have arisen subsequent to the release of the Department of Toxic Substances Control Guidance for Ecological Risk Assessment in 1996. These EcoNOTES are meant to provide clarification for specific issues not directly addressed in the 1996 guidance documents or to supersede any previous departmental guidance. EcoNOTES should be reviewed prior to preparation of an Ecological Risk Assessment.