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Date:         Thu, 4 Nov 2004 13:16:46 -0500
Reply-To:     NLM TOXENVLIST <[log in to unmask]>
Sender:       NLM Toxicology/Environmental Health Update
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From:         NLM TOXENVLIST <[log in to unmask]>
Subject:      NLM Resource Update: TOXMAP, Environmental Health E-Maps

The National Library of Medicine (NLM) has released TOXMAP, an interactive
web site that shows the amount and location of reported toxic chemicals
released into the environment on maps of the United States. TOXMAP (
<http://toxmap.nlm.nih.gov/> http://toxmap.nlm.nih.gov) allows users to
visually explore information about releases of toxic chemicals by industrial
facilities around the United States as reported annually to the
Environmental Protection Agency (EPA,  <http://www.epa.gov/tri/>
http://www.epa.gov/tri/). It also integrates the map display with access to
relevant bibliographic references and other data on these chemicals,
providing a map-based portal to these resources.

TOXMAP allows users to create nationwide or local area maps that show where
chemicals are released into the air, water, and ground, and also provides
region-specific links to chemical and bibliographic information. It is
designed to:

* Show the geographic distribution of releases by chemical

* Show how the amount of chemical releases have changed over time

* Link to chemical information in TOXNET's Hazardous Substances Databank
(HSDB) and other authoritative resources

* Use chemical and geographic terms from the displayed map to search
bibliographic databases

* Integrate geographically coded data from other sources

* Provide general information about GIS, data quality, and map
interpretation

* Be easy to navigate and understandable to those unfamiliar with GIS

Since many users may not be experienced in reading maps or understanding map
data, TOXMAP provides Frequently Asked Questions (FAQ). The FAQ
(http://toxmap.nlm.nih.gov/toxmap/help/faq.jsp) provides questions/answers
to supplement the user's ability to understand the map displays and the
data. The initial release of TOXMAP includes questions ranging from "What is
GIS?" and "What is TOXMAP?" to "How accurate is TRI Data?" and "What are
some tips for reading maps critically?"

More information about TOXMAP can be found at
<http://www.nlm.nih.gov/pubs/factsheets/toxmap.html>
http://www.nlm.nih.gov/pubs/factsheets/toxmap.html

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