National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

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Title/Authors	Accession Number	Publication Year	Page Count
Geohydrology of the Unsaturated Zone and Simulated Time of Arrival of Landfill Leachate at the Water Table, Municipal Solid Waste Landfill Facility, U.S. Army Air Defense Artillery Center and Fort Bliss, El Paso County, Texas. Frenzel, P. F; Abeyta, C. G.	PB2000102358	1999	34 pages
Cost-Benefit Study for Designing an Information System to Monitor the Utilization of Diagnostic Ancillary and Pharmacy Services at the National Naval Medical Center, Bethesda, Maryland. Metcalf, E. A.	ADA324349	1996	120 pages
Hydrologic Evaluation of Landfill Performance (HELP) Model: Engineering Documentation for Version 3. Schroeder, P. R; Dozier, T. S; Zappi, P. A; McEnroe, B. M; Sjostrom, J. W; Peyton, R. L.	PB95212700	1994	134 pages
Hydrologic Evaluation of Landfill Performance (HELP) Model. User's Guide for Version 3. Schroeder, P. R; Lloyd, C. M; Zappi, P. A; Aziz, N. M.	PB95212692	1994	112 pages