[Federal Register Volume 65, Number 24 (Friday, February 4, 2000)]
[Notices]
[Pages 5643-5644]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 00-2480]


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ENVIRONMENTAL PROTECTION AGENCY

[FRL-6533-5]


The QTRACER Program for Tracer-Breakthrough Curve Analysis for 
Karst and Fractured-Rock Aquifers; and A Lexicon of Cave and Karst 
Terminology with Special Reference to Environmental Karst Hydrology

AGENCY:  Environmental Protection Agency (EPA).

ACTION:  Notice of availability of two final documents and CD-ROM.

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SUMMARY:  The U.S. Environmental Protection Agency (EPA) announces the 
availability of two final documents, The QTRACER Program for Tracer-
Breakthrough Curve Analysis for Karst and Fractured-Rock Aquifers (EPA/
600/R-98/156a, February 1999) and CD-ROM (EPA/600/R-98/156b, February 
1999), and A Lexicon of Cave and Karst Terminology with Special 
Reference to Environmental Karst Hydrology (EPA/600/R-99/006, January 
1999), prepared by the National Center for Environmental Assessment--
Washington Office (NCEA-W), within the Office of Research and 
Development.
    The QTRACER program was developed to provide a fast and easy method 
for evaluating tracer-breakthrough curves generated from tracing 
studies conducted in karst and fractured-rock aquifers. The results may 
then be applied in solute-transport modeling and risk assessment 
studies. The QTRACER document will serve as a technical guide to 
various groups who must address potential and/or existing ground-water 
contamination problems in karst and fractured-rock terranes. Tracing 
studies are always appropriate and probably necessary, but analyses can 
be difficult and tedious. This document and associated computer 
programs alleviate some of these problems.
    A Lexicon of Cave and Karst Terminology with Special Reference to 
Environmental Karst Hydrology was prepared to satisfy the need to 
understand the terminology common to the field of karst. This document 
is a glossary of most terms that have some relationship to the field of 
environmental karst, as well as specific karst terms. It includes many 
foreign terms because much karst research is conducted in foreign 
countries and published using local terminology. In many instances 
common environmental terms are defined in such a way as to specifically 
reference karstic phenomena. This document will serve as a technical 
guide for those who must read the karst literature or hold discussion 
with karst researchers. It is intended to remove much of the confusion 
surrounding many karst terms.

ADDRESSES:  These documents are being made available electronically 
from the NCEA web site at http://www.epa.gov/ncea. A limited number of 
copies of the printed and CD-ROM version of the QTRACER document is 
available from EPA's National Service Center for Environmental 
Publications (NSCEP) in Cincinnati, Ohio (telephone: 1-800-490-9198, or 
513-489-8190; facsimile 513-489-8695). Please provide the title and EPA 
number when ordering from NSCEP. Paper copies of both documents also 
may be purchased from the National Technical Information Service

[[Page 5644]]

(NTIS) in Springfield, VA (1-800-553-NTIS[6847] or 703-605-6000; 
facsimile 703-321-8547). Please provide the following PB numbers when 
ordering from NTIS: The QTRACER Program for Tracer-Breakthrough Curve 
Analysis for Karst and Fractured-Rock Aquifers (PB99-151904), and A 
Lexicon of Cave and Karst Terminology with Special Reference to 
Environmental Karst Hydrology (PB2000-101071).

FOR FURTHER INFORMATION CONTACT:  Malcolm Field, NCEA-W (8623D), U.S. 
Environmental Protection Agency, Washington, DC 20460; phone: 202-564-
3279; facsimile: 202-565-0079;   e-mail: <a href="/cdn-cgi/l/email-protection#76101f131a12581b171a15191a1b3613061758111900"><span class="__cf_email__" data-cfemail="9ff9f6faf3fbb1f2fef3fcf0f3f2dffaeffeb1f8f0e9">[email protected]</span></a>.

    Dated: January 19, 2000.
George W. Alapas,
Acting Director, National Center for Environmental Assessment.
[FR Doc. 00-2480 Filed 2-3-00; 8:45 am]
BILLING CODE 6560-50-P


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