Order this information in Print

Order this information on CD-ROM

Download in PDF Format

     

Click here to make tpub.com your Home Page

Page Title: Ecological and Human Health Risk Assessment Guidance
Back | Up | Next

Click here for a printable version

Google


Web
www.tpub.com

Home


   
Information Categories
.... Administration
Advancement
Aerographer
Automotive
Aviation
Combat
Construction
Diving
Draftsman
Engineering
Electronics
Food and Cooking
Math
Medical
Music
Nuclear Fundamentals
Photography
Religion
USMC
   
Products
  Educational CD-ROM's
Printed Manuals
Downloadable Books
   

 

Ecological and Human Health Risk Assessment Guidance
What Is the Purpose of this Document?
This document provides guidance for conducting ecological and human health risk assessments at aquatic
sites potentially impacted by dredged material management activities.
What is Risk Assessment?
Risk assessment is the process of evaluating the impact of a chemical or physical condition upon the
health of individual humans or the environmental well-being of a population or community of animals and
plants. The former is called human health risk assessment, and the latter ecological risk assessment.
Proper Timing for the Risk Assessment Option?
The project manager should decide to apply a risk assessment within the context of the site selection
process and/or the four-tiered evaluation of dredged material, or when there are unresolved issues with
regard to potential human or ecological exposures. It is most applicable to projects which have:
a. Reached Tier IV and concern about specific bioaccumulative compounds or toxic compounds
remains.
b. The potential to affect a local sensitive habitat or species.
c  Outstanding exposure issues where a risk assessment will allow realistic use of information about a
species' natural history such as foraging areas, breeding times, migration patterns.
d. Potential human health exposure either directly to sediments or through the food chain.
e. Issues associated with environmental windows (time periods when a species is least vulnerable).
Who Can Conduct a Risk Assessment?
The selection of personnel to conduct a risk assessment depends on the level of complexity
addressed in the risk assessment. For example, a rough estimate of exposure based on a simple
sediment-water partitioning equation may be sufficient to demonstrate little probability of
bioavailability of a chemical, and hence risk. In such a case, operations personnel with expertise in
engineering, chemistry, or marine geology may be the only necessary personnel. In the most
complex assessments (and these are likely to be the least frequently encountered), an
interdisciplinary team of engineers, biologists, chemists, and physical scientists may be necessary.
1
Chapter 1 Overview of Ecological and Human Health Risk

Privacy Statement - Press Release - Copyright Information. - Contact Us - Support Integrated Publishing

Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business