[Federal Register: August 27, 2003 (Volume 68, Number 166)]
[Notices]
[Page 51576-51577]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr27au03-71]
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ENVIRONMENTAL PROTECTION AGENCY
[FRL-7549-8]
Tracer-Test Planning Using the Efficient Hydrologic Tracer-Test
Design (EHTD) Program
AGENCY: Environmental Protection Agency.
ACTION: Notice of availability of final document.
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SUMMARY: The U. S. Environmental Protection Agency (EPA) announces the
availability of a final document and associated computer program,
Tracer-Test Planning Using the Efficient Hydrologic Tracer-Test Design
(EHTD) Program (EPA/600/R-03/034, April 2003). This document was
prepared by the U.S. Environmental Protection Agency's (EPA) National
Center for Environmental Assessment (NCEA) of the Office of Research
and Development (ORD).
[[Page 51577]]
The purpose of this document is to serve as a technical guide to
various groups who must address potential or existing contamination
problems in hydrologic systems using trace tests. Hydrologic
complexities and inadequate data tends to relegate initial tracer-test
designs regarding appropriate tracer masses and sample collection times
to simple conjecture. This document and associated computer program
alleviate some of these problems.
EHTD produces a detailed assessment of expected tracer-test results
before a tracer test is ever initiated. It also produces a probable
tracer-breakthrough curve for each sampling station. Preliminary
testing of EHTD has shown it to be reliable in most instances.
DATES: This document will be available soon.
ADDRESSES: This document is available electronically through the NCEA
Web site at (www.epa.gov/ncea). A limited number of paper copies will
be available from the EPA's National Service Center for Environmental
Publications (NSCEP) in Cincinnati, OH (telephone: 1-800-490-9198 or
513-489-8190; facsimile: 513-489-8695; or via the Internet at http://www.epa.gov/NCEPIhome/orderpub.html
). Please provide your name, mailing
address, the title, and EPA number of the requested publication when
ordering from NSCEP. Copies may also be purchased from the National
Technical Information Service (NTIS) in Springfield, Virginia;
telephone: 1-800-553-NTIS[6847] or 703-605-6000; facsimile: 703-321-
8547. Please provide the number PB2003-103271 when ordering from NTIS.
FOR FURTHER INFORMATION CONTACT: For further information, please
contact Malcolm Field (202-564-3279) mailing address: National Center
for Environmental Assessment (8623D), U.S. Environmental Protection
Agency, 1200 Pennsylvania Avenue, NW., Washington, DC 20460; facsimile:
202-565-0079; e-mail: field.malcolm@epa.gov.
Dated: August 18, 2003.
Peter W. Preuss,
Director, National Center for Environmental Assessment.
[FR Doc. 03-21934 Filed 8-26-03; 8:45 am]
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