The Special Projects Section of Reynolds Electrical & Engineering Co., Inc. (REECo) and REECo's successor, Bechtel Nevada (BN) (among other entities), were responsible for characterizing the subsurface hydrogeology of the Area 3 Radioactive Waste Management Site (RWMS) at the Nevada Test Site for the U.S. Department of Energy, Nevada Operations Office in the early to mid-1990s. This work was documented in a series of limited-distribution data reports. As part of BN's current scope for closure planning for the Area 3 RWMS, some of these older data reports are being updated and submitted for approval for public release so they will be accessible for public review and for citation in future documents. A document titled 'Hydrogeologic Characterization of the Unsaturated Zone at the Area 3 Radioactive Waste Management Site' was prepared by BN in February 1998 and assigned the document number DOE/NV/11718--210. This document included several reports that address various portions of the Area 3 RWMS, some of which were assigned separate document numbers. None of the included documents or the larger comprehensive document were approved for public release. To permit public access to these data and to relieve confusion caused by this arrangement of nested documents, four reports within the larger document are being updated and released separately. This document was originally prepared by BN under the same title in February 1998, and is one of the four documents that were included in the larger report. This report has been updated by revising it to conform to current editorial standards of BN and the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office.